Wireless power supply device, telemetric measuring system, rotating machine, system for supplying power wirelessly to rotating body, and turbine system

A wireless power supply device that wirelessly supplies power from a stator side to a plurality of power-receiving antennas disposed on a rotor rotated about an axis (O) at intervals in a circumferential direction includes: an oscillator (90) that oscillates a high-frequency signal; and an annular power transmitter (71) that has a leaky waveguide (80) in which a plurality of radiating portions (83) that radiate the high-frequency signal as a radio wave are arranged in the circumferential direction and extend in a circular arc shape in the circumferential direction.

TECHNICAL FIELD

The present invention relates to a wireless power supply device, a telemetric measuring system, and a rotating machine. Further, the present invention relates to a system for wirelessly supplying power to a rotating body, and a turbine system and is useful for application to the case where power is wirelessly supplied to transmitters that transmit information used to monitor a rotating machine such as a turbine.

Priority is claimed on Japanese Patent Application No. 2016-098194 filed May 16, 2016 and on Japanese Patent Application No. 2017-067492 filed Mar. 30, 2017, the contents of which are incorporated herein by reference.

BACKGROUND ART

A telemetric measuring system is known as an operation monitoring system that monitors an operation situation of a rotating machine such as a gas turbine. The telemetric measuring system detects states of the blades by means of, for example, a plurality of sensors mounted in the blades of the turbine. Detected information of these sensors is wirelessly transmitted to a stationary side by transmitters that are provided on a rotary side to correspond to the respective sensors.

Here, power that drives the sensors and the transmitters mounted on the rotary side is wirelessly supplied from the stationary side to a power-receiving module of the rotary side by a wireless power supply device. As this wireless power supply device, an induction power-supplying type wireless power supply device that wirelessly supplies power to a power-receiving coil of the rotary side by means of a power-transmitting coil of the stationary side is known (e.g., see Patent Literature 1).

In general, a radio wave type wireless power supply device that receives microwaves transmitted from power-transmitting antennas at power-receiving antennas and converts the microwaves into power is known.

CITATION LIST

Patent Literature

SUMMARY OF INVENTION

Technical Problem

Meanwhile, since the wireless power supply device disclosed in Patent Literature 1 adopts the induction power-supplying type, a transmission distance between the power-transmitting coil and the power-receiving coil is short. For this reason, if diameter dimensions and installation positions of both coils are not previously considered in a design stage of the rotating machine, it is difficult to realize proper wireless power transmission.

In the case where the radio wave type wireless power supply device is applied to the rotating machine, the power is transmitted to the plurality of power-receiving antennas that are arranged in rotating bodies in an annular shape, and thus there is a need to arrange numerous power-transmitting patch antennas on the stationary side in an annular shape. In this case, there is a need to perform phase adjustment of each of the patch antennas in order to avoid a reduction in received power of the power-receiving antennas due to interference of radio waves radiated from the patch antennas. For this reason, phase shifters are provided to correspond to the patch antennas, and adjustment should be individually performed. There is possibility that complication of a device and troublesomeness of work are caused.

The present invention is directed to providing a wireless power supply device, a telemetric measuring system, a rotating machine, a system for wirelessly supplying power to a rotating body, and a turbine system, capable of improving a flexibility of installation and inhibiting complication and troublesomeness of work.

Solution to Problem

A wireless power supply device according to a first aspect of the present invention is a wireless power supply device which wirelessly supplies power from a stator side to a plurality of power-receiving antennas disposed on a rotor rotated about an axis at intervals in a circumferential direction, and includes: an oscillator configured to oscillate a high-frequency signal; and an annular power transmitter configured to have a leaky antenna in which a plurality of radiating portions which radiate the high-frequency signal as a radio wave are arranged in the circumferential direction and extend in a circular arc shape in the circumferential direction.

In the present aspect, the radio waves radiated from the leaky antennas acting as the power transmitter are received by the power-receiving antennas, and thereby the power is transmitted to a rotary side. In the case of this antenna type, since a transmission distance is longer than that of induction power-supplying type, a flexibility of installation of power-transmitting antennas and power-receiving antennas can be improved.

Meanwhile, in the present aspect, since the leaky antennas acting as the power transmitter extend in the circumferential direction, the radio waves can be simultaneously radiated to the plurality of power-receiving antennas, which are arranged in the circumferential direction, by one of the leaky antennas. That is, the radio waves can be simultaneously radiated to a group of power-receiving antennas located in a wide range in the circumferential direction by the leaky antennas.

Since the high-frequency signal from one oscillator is propagated to the leaky antenna, by appropriately setting a pitch and sizes of the radiating portions, and thereby the phases of the radio waves radiated from the radiating portions can be properly set. Thereby, it is possible to suppress a reduction in received power of the power-receiving antennas due to the occurrence of fading between the radio waves radiated from the neighboring radiating portions.

Furthermore, as in the case where numerous power-transmitting patch antennas are arranged on a stationary side, there is no need to provide the oscillator for each of the patch antennas. Furthermore, there is no need to adjust the individual phase by installing a transfer device on each of the patch antennas.

In the above aspect, the power transmitter may have an annular shape in which a plurality of leaky antennas including the leaky antenna are arranged in the circumferential direction via a gap between ends thereof in the circumferential direction.

The leaky antennas have a structure in which they are divided in the circumferential direction. Thereby, the power transmitter having an annular shape as a whole can be easily mounted on or demounted from an outer circumferential side of a rotating machine.

In the above aspect, the oscillator may include a plurality of oscillators provided to correspond to the plurality of leaky antennas, and the wireless power supply device may include a reference oscillator that outputs a synchronous signal, which arranges the high-frequency signals which the oscillators oscillate, to the plurality of oscillators.

Even in the case where the power transmitter is made up of the plurality of leaky antennas, the radio waves can be radiated in a wide range by the leaky antennas in the circumferential direction. Thus, in comparison with the case where the numerous patch antennas are arranged, complication of the structure can be avoided. Further, since the phases of the high-frequency signals propagated from the oscillators provided to correspond to the leaky antennas are arranged by the reference oscillator, the power transmitter can radiate uniform radio waves as a whole. Thereby, the fading can be inhibited to avoid reducing the received power.

In the above aspect, the wireless power supply device may include a power divider that distributes the high-frequency signal which the oscillator oscillates to the leaky antennas.

In the case, as described above, the high-frequency signal having the same phase is propagated to each of the leaky antennas. For this reason, the power transmitter can radiate uniform radio waves as a whole, and the fading can be inhibited.

In the above aspect, the wireless power supply device may include a phase shifter that enables adjustment of a phase of the high-frequency signal distributed to the leaky antennas by the power divider.

Thereby, fine adjustment of the phase of the radio wave radiated from each of the leaky antennas can be performed, and the phases of the radio waves from the leaky antennas can be identical to each other with higher accuracy.

Further, the phase adjustment is performed by the phase shifter while looking at the received power of each of the power-receiving antennas. Thereby, for example, even in the case where wire lengths between the power divider and the leaky antennas or dimensions of the leaky antennas in the circumferential direction are different, a phase difference between the radio waves radiated from the leaky antennas can be made smaller.

In the above aspect, the wireless power supply device may include a dielectric lens that covers at least some of the radiating portions.

Thereby, foreign materials can be inhibited from entering the radiating portions of the leaky antennas. Therefore, characteristic deterioration of the leaky antennas caused by the foreign materials can be avoided.

Further, directionality of the radio waves can be arbitrarily set by the dielectric lens. Accordingly, a flexibility of installation of the power transmitter and the power-receiving antennas can be further improved.

In the above aspect, the leaky antenna is preferably a leaky waveguide.

Since the leaky waveguide generally has high heat resistance, the leaky antenna can also be installed under a higher temperature environment. Therefore, the flexibility of installation can be further improved.

A telemetric measuring system according to a second aspect of the present invention includes: a stator-side unit configured to have any one of the wireless power supply devices and a receiver that is provided on the stator side and receives wireless information; and a plurality of rotor-side units configured to have a power-receiving module that includes the power-receiving antennas, sensors that are driven by power which the power-receiving antennas receive and that detect a state of the rotor, and transmitters that are driven by the power which the power-receiving antennas receive and that transmit detected signals of the sensors as wireless information, and provided on the rotor at intervals in the circumferential direction.

A rotating machine according to a third aspect of the present invention includes: the stator; the rotor configured to have a rotary shaft that is rotated about the axis relative to the stator, and a plurality of blades that are provided to radially extend from an outer circumferential surface of the rotary shaft; and the telemetric measuring system. The sensors are provided on the respective blades.

A wireless power-supplying system according to a fourth aspect of the present invention has the following features.

1) The wireless power-supplying system is a system for wirelessly supplying power to a rotating body, which supplies driving power to transmitters, each of which is arranged in the rotating body, from a plurality of oscillators via power-transmitting antennas arranged in an annular shape.

The oscillators are arranged to correspond to the power-transmitting antennas in an annular shape, and drive the oscillators, which are adjacent to a single reference oscillator driven first by an oscillating trigger signal in counterclockwise and clockwise directions, through the oscillating trigger signal sent from the reference oscillator, and sequentially drive the oscillator adjacent in the counterclockwise direction and the oscillator adjacent in the clockwise direction through oscillating trigger signals that are sent from the oscillator adjacent in the clockwise direction and the oscillator adjacent in the counterclockwise direction to the respective oscillators.

The power-transmitting antennas are connected to the oscillators by wires having the same length.

2) In the feature (1), the oscillators are arranged in an even number except the reference oscillator.

3) In the feature (1) or (2), the transmitters are arranged in blades of a turbine.

A turbine system having the wireless power-supplying system according to a fifth aspect of the present invention has the following features.

4) In the turbine system having an operation monitoring system configured to have sensors that are arranged in blades of a turbine and detect predetermined physical amounts including strains and temperatures of the blades, and transmitters that are arranged in the blades, input detected signals that represent the physical amounts which the sensors have detected, and wirelessly transmit the detected signals toward receivers of a stationary side,

the system for wirelessly supplying power to a rotating body defined in the feature (3) is applied as a wireless power-supplying system that supplies driving power of the transmitters.

In the fourth and fifth aspects, the received power based on the radio waves received by the power-receiving module is almost dominantly determined depending on an arrival radio wave from the front power-transmitting antenna that directly faces the power-receiving module and arrival radio waves from the power-transmitting antennas adjacent to the directly facing power-transmitting antenna in the counterclockwise and clockwise directions.

Here, in the wireless power-supplying system according to the above aspect, the oscillators and the power-transmitting antennas are connected by the wires having the same length. In addition, the oscillators, the power-transmitting antennas, and the wires are all arranged in an annular shape with the same layout. As a result, the phase difference of the radio waves caused by a difference between the wire lengths does not occur. Therefore, the phase shifters provided on the wireless power-supplying system of the related art can be removed. Further, the oscillating trigger signals are sequentially sent from the single oscillator becoming the reference to the oscillators adjacent to the reference oscillator in the counterclockwise and clockwise directions, and drive the oscillators. As a result, the wire for transmitting the oscillating trigger signal can be shortened as much as possible. In combination with the fact that the phase shifters can be removed, miniaturization of the device of the stationary side and a reduction in cost can be realized.

Advantageous Effects of Invention

According to the wireless power supply device, the telemetric measuring system, the rotating machine, the system for wirelessly supplying power to a rotating body, and the turbine system of the present invention, a flexibility of installation can be improved, and complication and troublesomeness of work can be inhibited.

DESCRIPTION OF EMBODIMENTS

As illustrated inFIG. 1, a gas turbine1according to the present embodiment includes a compressor10that generates high-pressure air, a combustor20that mixes fuel with high-pressure air, burns the mixture, and thereby generates a combustion gas, and a turbine30that is driven by the combustion gas.

The compressor10has a compressor rotor11that rotates about an axis O and a compressor casing12that covers the compressor rotor11from an outer circumferential side. The compressor rotor11has a pillar shape that extends along the axis O. A plurality of compressor blade rows13arranged at intervals in a direction of the axis O are provided on an outer circumferential surface of the compressor rotor11. Each of the compressor blade rows13has a plurality of compressor blades14that are arranged on the outer circumferential surface of the compressor rotor11at intervals in a circumferential direction of the axis O.

The compressor casing12has a tubular shape centered on the axis O. A plurality of compressor vane rows15arranged at intervals in the direction of the axis O are provided on an inner circumferential surface of the compressor casing12. These compressor vane rows15are arranged to alternate with the compressor blade rows13when viewed in the direction of the axis O. Each of the compressor vane rows15has a plurality of compressor vanes16that are arranged on the inner circumferential surface of the compressor casing12at intervals in the circumferential direction of the axis O.

The combustor20is provided between the compressor casing12and a turbine casing32(to be described below). The high-pressure air generated by the compressor10is mixed with the fuel in the combustor20, and becomes a premixed gas. The premixed gas is burned in the combustor20, and thereby a high-temperature high-pressure combustion gas is generated. The combustion gas is guided into the turbine casing32, and drives the turbine30.

The turbine30has a turbine rotor31that rotates about the axis O and the turbine casing32that covers the turbine rotor31from an outer circumferential side. A plurality of turbine disks31a(seeFIG. 2) that have disk shapes centered on the axis are stacked in a direction of the axis O, and thereby the turbine rotor31has a pillar shape that extends along the axis O as a whole. A turbine blade row33is provided on an outer circumference of each of the turbine disks31a. Thereby, a plurality of turbine blade rows33arranged at intervals in the direction of the axis O are provided on the turbine rotor31.

Each of the turbine blade rows33has a plurality of turbine blades34that are arranged on an outer circumferential surface of the turbine rotor31at intervals in the circumferential direction of the axis O. The turbine rotor31is integrally connected to the compressor rotor11in the direction of the axis O, and thereby forms a gas turbine rotor.

The turbine casing32has a tubular shape centered on the axis O. A plurality of turbine vane rows35arranged at intervals in the direction of the axis O are provided on an inner circumferential surface of the turbine casing32. These turbine vane rows35are arranged to alternate with the turbine blade rows33when viewed in the direction of the axis O. Each of the turbine vane rows35has a plurality of turbine vanes36that are arranged on the inner circumferential surface of the turbine casing32at intervals in the circumferential direction of the axis O. The turbine casing32is connected to the compressor casing12in the direction of the axis O, and thereby forms a gas turbine casing. That is, the gas turbine rotor is made integrally rotatable about the axis O in the gas turbine casing.

Here, the present embodiment includes a telemetric measuring system40for monitoring an operation situation of the gas turbine1in operation. As illustrated inFIG. 2, the telemetric measuring system40includes a rotor-side unit50and a stator-side unit60.

The rotor-side unit50is integrally provided on the turbine rotor31of the gas turbine1, and is rotated about the axis O in association with the rotation of the turbine rotor31. The rotor-side unit50has a power-receiving module51, a secondary battery53, a sensor54, and a transmitter55. The power-receiving module51, the secondary battery53, the sensor54, and the transmitter55are set as one set, and the rotor-side unit50has a plurality of sets.

The power-receiving modules51have power-receiving antennas52that receive power transmitted as radio waves (microwaves) from the outside. The plurality of power-receiving antennas52are provided on a surface facing one side (on a right side inFIG. 2or a downstream side of the turbine) of the turbine disk31ain the direction of the axis O to be exposed from an outer surface of the turbine disk31aat intervals in a circumferential direction. The plurality of power-receiving modules51may be provided, for example, to correspond to the turbine blades34at intervals at a predetermined angle in a circumferential direction. The radio waves received by the power-receiving antennas52are converted into power in the power-receiving modules51.

The plurality of secondary batteries53are provided to correspond to the plurality of power-receiving modules51.

Each of the secondary batteries53is provided integrally with one of the power-receiving modules51. The secondary batteries53are electrically connected to the corresponding power-receiving modules51and are charged by power which the power-receiving modules51have received. The secondary batteries53supply power for driving the sensors54and the transmitters55to them. That is, in the present embodiment, the power which the power-receiving modules51have received is supplied to the sensors54and the transmitters55via the secondary batteries53.

The plurality of sensors54are provided on the turbine disk31aat intervals in a circumferential direction, and are mounted on the turbine blades34in the present embodiment. For example, strain gauges that detect vibrations of the turbine blades34or thermocouples that detect temperatures of the turbine blades34are used as the sensors54. Any other sensors54capable of detecting physical quantities of the turbine blades34in an operation state of the gas turbine1may be used. These sensors54are electrically connected to the corresponding sets of secondary batteries53, and power for driving the sensors54is supplied from the secondary batteries53.

The plurality of transmitters55are provided to correspond to the power-receiving modules51and the secondary batteries53at intervals in a circumferential direction. The power-receiving antennas52are provided on the surface facing the one side (on the right side inFIG. 2or the downstream side of the turbine) of the turbine disk31ain the direction of the axis O to be exposed from the outer surface of the turbine disk31a. One set of a transmitter55, a power-receiving module51, and a secondary battery53is integrally provided. The transmitter55is electrically connected to the secondary battery53and the sensor54. The transmitter55is driven by power supplied from the secondary battery53. A detected signal detected by the corresponding sensor54is input to the transmitter55. The transmitter55converts the detected signal of the sensor54into wireless information, and transmits the wireless information to the outside via a transmitting antenna.

Next, the stator-side unit60will be described. The stator-side unit60has a receiver61, a signal processor62, a display63, and a wireless power supply device70. The receiver61of the stator-side unit60is provided on a stationary component (a stator)32a.

Here, the stationary component32ais a component that is stationary and does not rotate relative to the turbine rotor31rotated about the axis O, and is fixed, for example, to the turbine casing32in the present embodiment. The stationary component32amay be not only fixed to the turbine casing32but be mounted on a stationary structure.

The stationary component32ahas a stationary component main body32bformed in a discoid shape that faces a surface of the turbine disk31aon which the power-receiving modules51and the power-receiving antennas52of the rotor-side unit50are provided, from one side of the axis O. The turbine rotor31passes through the stationary component main body32bin the direction of the axis O. The stationary component32ahas protrusions32cthat protrude from the stationary component main body32btoward the turbine disk31a, that is, toward the one side (on the right side inFIG. 2or an upstream side of the turbine30) in the direction of the axis O. The plurality of protrusions32care provided at intervals in a circumferential direction. Tips of the protrusions32care disposed at an interval from and in the vicinity of the power-receiving modules51and the transmitters55of the rotor-side unit50.

The receiver61is provided on the protrusion32cof the stationary component32a, and has a receiving antenna that receives the wireless information transmitted by the transmitter55of the rotor-side unit50. The receiving antenna may be provided on the protrusion32cof the stationary component32a, or may be provided to extend in the circumferential direction using the protrusion32cas a fixing place. The receiver61is disposed on one side in the direction of the axis O and outside in a radial direction at an interval from the transmitter55. That is, the receiver61faces the transmitter55in a direction inclined with respect to the direction of the axis O.

The wireless information received by the receiver61is input to the signal processor62. The signal processor62extracts the detected signal of the sensor54which is included in the wireless information.

The display63displays the detected signal of the sensor54which is extracted by the signal processor62, for example, such that an administrator of the gas turbine1can check the detected signal.

The signal processor62and the display63may be provided outside the gas turbine1.

Next, the wireless power supply device70will be described usingFIGS. 2 and 3. The wireless power supply device70wirelessly supplies power to the plurality of power-receiving antennas52disposed on the turbine rotor31at intervals in a circumferential direction from the vicinity of the stationary component32a.

The wireless power supply device70has a power transmitter71and an oscillator90.

The power transmitter71has an annular shape centered on the axis O as a whole. The power transmitter71is fixed to the stationary component32a. In the present embodiment, the power transmitter71is constituted of a leaky waveguide (a leaky antenna)80.

The leaky waveguide80extends in a circumferential direction and along a circular arc centered on the axis O. The leaky waveguide80has an inside formed in a hollow shape, and a cross-sectional shape thereof perpendicular to an extending direction is, for example, a rectangular shape or a circular shape. A first end81that is one end of the leaky waveguide80in the circumferential direction and a second end82that is the other end of the leaky waveguide80in the circumferential direction face each other with a slight gap. That is, the leaky waveguide80is curved to have a C shape, and has an annular shape that surrounds the axis O on the entire circumference excluding the gap.

The leaky waveguide80is fixed to the tips of the plurality of protrusions32cof the stationary component32a. That is, the leaky waveguide80uses the protrusions32cas fixing places while sequentially going by way of the protrusions32cdisposed at intervals in the circumferential direction. As illustrated inFIG. 2, the leaky waveguide80is located on one side in the direction of the axis O and the outside in the radial direction with respect to the power-receiving antennas52that are arranged in the rotor-side unit50in an annular shape. That is, the leaky waveguide80faces the power-receiving antennas52in a direction inclined with respect to the direction of the axis O.

A plurality of radiating portions83passing through the leaky waveguide80are mutually arranged on a surface which faces sides of the power-receiving antennas52in the leaky waveguide80, for example, a surface on the other side in the direction of the axis O, at an interval.

In the present embodiment, in detail, as illustrated inFIG. 4, the radiating portions83that extend in the circumferential direction that is a longitudinal direction are alternately arranged at inner and outer portions of the leaky waveguide80in a radial direction in a zigzag shape as they are directed in the circumferential direction.

The oscillator90oscillates a high-frequency signal having a predetermined frequency depending on power supplied from a power supply (not shown). The oscillator90is electrically connected to the first end81of the leaky waveguide80via a wire. The high-frequency signal which the oscillator90has oscillated is transmitted to the first end81of the leaky waveguide80, and thereby electromagnetic waves are propagated from the side of the first end81toward the side of the second end82in the leaky waveguide80while forming an electromagnetic field. Radio waves (microwaves) of phases corresponding to the formation places of the radiating portions83are radiated from the radiating portions83on the basis of the electromagnetic waves.

Next, effects of the present embodiment will be described.

During the operation of the gas turbine1in which the turbine rotor31is in a rotated state, the sensors54mounted on the turbine blades34are driven by the power from the secondary batteries53, and thereby the detected signals of the sensors54are output to the transmitters55. The transmitters55are driven by the power from the secondary batteries53, and thereby the detected signals are converted into wireless information and are transmitted to the transmitters55of the stator-side unit60. The signal processor62extracts the detected signals of the sensors54from the wireless information which the transmitters55have received, and the detected signals are displayed on the display63. On the basis of the displayed signals, an administrator of the gas turbine1determines normality or abnormality of the operation state of the gas turbine1.

Concurrently with the state detection of the turbine blades34, the power is wirelessly transmitted from the wireless power supply device70of the stator-side unit60to the power-receiving antennas52of the rotor-side unit50, and the secondary batteries53are charged.

That is, the high-frequency signal which the oscillator90of the wireless power supply device70has oscillated is propagated into the leaky waveguide80as electromagnetic waves, and the radio waves from the radiating portions83are radiated. Since the radiating portions83are formed on the entire area of the leaky waveguide80in the circumferential direction, the radio waves are radiated from the entire area in the circumferential direction. The radio waves radiated in this way are received by the power-receiving antennas52of the power-receiving modules51rotated about the axis O in a rotational direction R. The power-receiving antennas52sequentially receive the radio waves radiated from the radiating portions83in the process of moving in the circumferential direction during rotation. That is, the power-receiving antennas52sequentially receive the radio waves from the radiating portions83of the leaky waveguide80in the entire area in the circumferential direction. The radio waves which the power-receiving antennas52have received are converted into the power by the power-receiving modules51, and the power is supplied to the secondary batteries53. Thereby, the secondary batteries53are charged with the power for driving the sensor54and the transmitter55.

As described above, the present embodiment adopts antenna type wireless power transmission in which the power is transmitted to the rotary side by receiving the radio waves radiated from the leaky waveguide80as the power transmitter71at the power-receiving antennas52. The antenna type has a longer transmission distance than an induction power-supplying type that transmits energy via a coil, for example, on the rotary side and the stationary side.

Here, in the case where the induction power-supplying type having a short transmission distance is adopted, there is a need to previously consider the diameter or the installation position of the coil in the design stage of the gas turbine1to perform the wireless power transmission on the rotary and stationary sides of the gas turbine1. For this reason, there is a problem in that the power-supplying device of the induction power-supplying type cannot be retrofitted.

In contrast, in the present embodiment, since the antenna type is adopted, even if the transmission distance is relatively long, the power can be sufficiently transmitted from the stationary side to the rotary side. For this reason, the wireless power supply device70can also be retrofitted to the gas turbine1in addition to enabling an improvement in a flexibility of design.

In the present embodiment, since the single leaky waveguide80acting as the power transmitter71extends in an annular shape in the circumferential direction, the radio waves can be simultaneously radiated to the plurality of power-receiving antennas52arranged in the circumferential direction by the single leaky waveguide80. That is, the radio waves can be simultaneously radiated to a group of the power-receiving antennas52located in a wide range in the circumferential direction by the single leaky waveguide80.

Furthermore, since the high-frequency signal from the single oscillator90is propagated to the leaky waveguide80, by appropriately setting a pitch and size of the radiating portions83, and the phases of the radio waves radiated from the radiating portions83can be arranged. Thereby, it is possible to suppress a reduction in received power of the power-receiving antennas52due to the occurrence of fading between the radio waves radiated from the neighboring radiating portions83.

Here, for example, in the case where an attempt is made to transmit the power to the rotary side using patch antennas instead of the leaky waveguide80, there is a need to arrange numerous patch antennas at a pitch of a half wavelength in the circumferential direction to arrange the phases of the patch antennas. Furthermore, there is a need to install a transfer device on each of the patch antennas to adjust the phase radiated from each of the patch antennas.

In contrast, in the present embodiment, since the single leaky waveguide80serves as the numerous patch antennas, a structure can be simplified, and costs can be reduced. Furthermore, since the phases of the radio waves radiated from the radiating portions83can be arranged by adequately setting the formation places (the pitch) and shapes of the radiating portions83, there is no need to individually install the transfer devices to perform the phase adjustment. For this reason, complication of the device and troublesome work can be avoided.

Since the leaky waveguide80generally has higher heat resistance than the patch antennas or the induction power-supplying type coil, the leaky waveguide80can also be installed, for example, in a place where the turbine30has a relatively high temperature. Therefore, the flexibility of design can be more greatly secured.

In particular, the gas turbine1is designed such that power generation efficiency is maximized. If the flexibility of design of the wireless power supply device70is high, the wireless power supply device70can be installed without impairing an original design of the gas turbine1to that extent. For this reason, the wireless power supply device70can be installed with high flexibility while assuring an original function as the gas turbine1.

As illustrated inFIG. 5, for example, radiating portions84may be formed as a modification of the first embodiment.

That is, in the modification, each of the radiating portions84sets an oblique direction which is a direction directed radially toward the circumferential direction as a longitudinal direction. To be more specific, one of the radiating portions84extends outward in the radial direction toward one side in the circumferential direction, and the other radiating portions84adjacent to the radiating portion84on one side in the circumferential direction extend inward in the radial direction toward one side in the circumferential direction. In this modification, the plurality of radiating portions84are arranged to extend in a zigzag shape.

Thus, by appropriately setting a pitch and shapes of the radiating portions84, and thereby phases of radio waves radiated from the radiating portions84can be arranged. Thereby, the radio waves radiated from the plurality of radiating portions84are inhibited from interfering with one another, and a high level of received power at the power-receiving antenna52can be maintained.

Next, a second embodiment of the present invention will be described with reference toFIG. 6. InFIG. 6, the same reference signs are given to components that are identical or similar to those of the first embodiment, and detailed description will be omitted.

A wireless power supply device170of the second embodiment includes a power transmitter171, a plurality of oscillators90, and a reference oscillator190.

The power transmitter171of the second embodiment has a plurality of leaky waveguides180(two leaky waveguides180in the present embodiment). These leaky waveguides180extend in the circumferential direction and along a circular arc centered on the axis O. In the present embodiment, each of the leaky waveguides180extends in a range of about 180° centered on the axis O. Dimensions of the two leaky waveguides180in the circumferential direction are the same.

The two leaky waveguides180are arranged in the circumferential direction via a gap between ends thereof in the circumferential direction. To be more specific, a first end181of one of the leaky waveguides180faces a second end182of the other leaky waveguide180via a slight gap in the circumferential direction. A first end181of the other leaky waveguide180faces a second end182of the one leaky waveguide180via a slight gap in the circumferential direction. Thereby, the power transmitter171has an annular shape centered on the axis O as a whole.

In the present embodiment, the plurality of oscillators90(two oscillators90in the present embodiment) are provided to correspond to the plurality of leaky waveguides180. The oscillators90are connected to the corresponding leaky waveguides180via wires. In the present embodiment, one of the oscillators90is connected to the first end181of the one leaky waveguide180via the wire. The other oscillator90is connected to the second end182of the other leaky waveguide180via the wire. Lengths of the wires are preferably the same.

The reference oscillator190is electrically connected to each oscillators90. The reference oscillator190outputs a synchronization signal as an oscillating trigger to the oscillators90such that high-frequency signals which the oscillators90have oscillated are identical to each other. Each of the oscillators90oscillates the high-frequency signal on the basis of the synchronization signal between the different oscillators90such that frequencies are identical to each other and phases are match each other.

The wireless power supply device170of the second embodiment has a structure in which the leaky waveguides180constituting the power transmitter171are divided into the plurality of leaky waveguides180in the circumferential direction. For this reason, the power transmitter71formed in an annular shape as a whole can be easily mounted on or demounted from an outer circumferential side of the turbine30. Therefore, in addition to facilitating production and assembly, mounting/demounting work during maintenance can be easily performed.

In this way, even in the case where the power transmitter71is made up of the plurality of leaky waveguides180, the radio waves can be radiated in a wide range (in a range of 180° in the present embodiment) in the circumferential direction by the numerous radiating portions83of each of the leaky waveguides180. Accordingly, in comparison with the case where the numerous patch antennas are arranged, complication of the structure can be avoided.

Furthermore, since the frequencies and phases of the high-frequency signals propagated from the oscillators90provided to correspond to the leaky waveguides180are arranged by the reference oscillator190, the power transmitter171can radiate uniform radio waves as a whole. Thereby, fading can be inhibited to avoid reducing the received power.

Next, a third embodiment of the present invention will be described with reference toFIG. 7. InFIG. 7, the same reference signs are given to components that are identical or similar to those of the second embodiment, and detailed description will be omitted.

A wireless power supply device270of the third embodiment includes a power transmitter171, an oscillator90, a power divider290, and a phase shifter291.

In the present embodiment, only one oscillator90is provided. The power divider290is interposed between the oscillator90and a plurality of leaky waveguides180(two leaky waveguides180in the present embodiment).

The power divider290distributes a high-frequency signal which the oscillator90has oscillated to leaky antennas. The power divider290and a first end181of one of the leaky waveguides180are directly and electrically connected by a wire. The power divider290and a second end182of the other leaky waveguide180are connected by a wire, but the phase shifter291is installed in the middle of the wire.

In the present embodiment, due to the constitution in which the high-frequency signal from the single oscillator90is propagated to the leaky waveguides80by the power divider290, the high-frequency signal having the same phase is propagated to each of the leaky antennas. For this reason, the power transmitter171can radiate uniform radio waves as a whole, and inhibit fading.

Furthermore, since the phase shifter291is interposed between the other leaky waveguide180and the power divider290, fine adjustment of the phases of the radio waves radiated from the other leaky waveguide180can be performed.

In particular, since a second end182of the one leaky waveguide180and a first end181of the other leaky waveguide180are separated from a place where the high-frequency signal is transmitted, the fading occurs easily. For example, in the case where dimensions of the two leaky waveguides180in the circumferential direction are different, or in the case where lengths of the wires for transmitting the high-frequency signal to the two leaky waveguides80are different, the fading may occur in that place.

In the present embodiment, for example, the phase adjustment is performed by the phase shifter291while looking at the received power of each of the power-receiving antennas52. Thereby, a phase difference between the radio waves radiated from the leaky waveguides180can be made smaller, and the occurrence of the fading can be further inhibited.

Next, a fourth embodiment of the present invention will be described with reference toFIG. 8. InFIG. 8, the same reference signs are given to components that are identical or similar to those of the first embodiment, and detailed description will be omitted.

In a leaky waveguide80of the fourth embodiment, a dielectric lens100is provided on each of radiating portions83. The dielectric lens100is formed of, for example, a resin such as polytetrafluoroethylene.

The dielectric lens100has an incidence plane101that blocks the radiating portion83, and an emission plane102that is connected to the incidence plane101and is inclined with respect to the incidence plane101.

Because the dielectric lenses100are provided, the dielectric lenses100serve as covers of the radiating portions83. For this reason, foreign materials can be inhibited from entering the leaky waveguides80from the outside via the radiating portions83. Thereby, characteristic deterioration of the leaky waveguides80caused by foreign materials can be avoided.

Since the dielectric lenses100transmit the radio waves radiated from the radiating portions83, they do not hinder the wireless power transmission. As in the present embodiment, the incidence plane101upon which the radio waves are incident is made to intersect the emission plane102to which the radio waves are emitted, and thereby the radio waves can be emitted in an arbitrary direction depending on an angle at which the incidence plane101intersects the emission plane102. Therefore, directionality of the radio waves can be changed arbitrarily, and a flexibility of installation of the wireless power supply device70can be further improved.

As a first modification of the fourth embodiment, as illustrated, for example, inFIG. 9, an incidence plane111of a dielectric lens110having the incidence plane111and an emission plane112may be separated outward from a radiating portion83, and an air layer113may be interposed between the incidence plane111and the radiating portion83. Thereby, the directionality of the radio waves that pass through the air layer and the dielectric lens and travel can be more greatly adjusted.

Furthermore, as a second modification of the fourth embodiment, as illustrated, for example, inFIG. 10, an emission plane122located on the opposite side of an incidence plane121of a dielectric lens120may be formed in a convex curved shape with respect to a traveling direction of the radio waves. Thereby, the radio waves radiated from the emission plane122are condensed in an opening direction of the radiating portion83. Therefore, an intensity of the radio waves can be enhanced, and the radio waves can be stably supplied to a power-receiving antenna52.

While embodiments of the present invention have been described, the present invention is not limited to the embodiments, and can be appropriately modified within the scope not departing from the gist of the present invention.

For example, while the power transmitter171is constituted of the two leaky waveguides80in the second embodiment, it may be constituted of three or more leaky waveguides180. In this case, the leaky waveguides180having a circular arc shape are arranged with ends thereof facing via a gap, and thereby an annular power transmitter171can be constituted as a whole.

Since the plurality of radiating portions83are formed at each of the leaky waveguides180, the leaky waveguides180can radiate the radio waves in the same way as a plurality of divided patch antennas. For this reason, the structure of the entire device can be simplified. Even in the case where the phases of the radio waves radiated from each of the leaky waveguides180are adjusted by the phase shifter291, the adjustment may be performed for each the leaky waveguides180, not for each the radiating portions83as well as. Therefore, in addition to the simplification of the structure, labor of the work can be sharply reduced.

In the embodiments, the example in which the leaky waveguides80and180are adopted as the leaky antennas has been described. However, for example, other leaky antennas such as a leakage coaxial cable may be used.

In the embodiments, the example in which the wireless power supply device70and the telemetric measuring system40are applied to the turbine30of the gas turbine1has been described. However, for example, the wireless power supply device70and the telemetric measuring system40may be applied to the compressor10of the gas turbine1or other rotating machines such as a steam turbine.

Hereinafter, a fifth embodiment of the present invention will be described in detail on the basis of the figures.

The fifth embodiment illustrated below is no more than an illustrative example, and is not intended to exclude any of various modifications or applications of technologies that are not specified in the following embodiments. Constitutions of the following embodiments can be variously modified and carried out within the scope not departing from the gist of the present invention, can be selected or rejected as needed, or can be appropriately combined.

First, a related art of the fifth embodiment will be described.

As an operation monitoring system for monitoring an operation situation of the turbine, a system configured to arrange sensors, which detect predetermined physical amounts such as strains or temperatures of blades of the turbine and wirelessly transmit detected signals indicating the physical amounts which the sensors have detected to a stationary side (a ground side) and perform predetermined signal processing is proposed.

In this type of operation monitoring system, a plurality of transmitters are arranged at blades (a rotating body side) along with a plurality of sensors, and the detected signals indicating the predetermined physical amounts are sent to the stationary side via the transmitters. Here, driving power of the transmitters is supplied from the stationary side by a wireless power-supplying system.

FIG. 11is a block diagram illustrating a wireless power-supplying system according to the related art. As illustrated in the same figure, a plurality of power-transmitting antennas02arranged in an annular shape are connected to oscillators01that are on the stationary side via amplifiers03by wires04. The oscillators01are connected to a single reference trigger generator010in parallel, and are driven together by an oscillating trigger signal which the reference trigger generator010sends.

Meanwhile, a plurality of power-receiving modules05(six power-receiving modules05in the figure) installed in the transmitters (whose main bodies are not illustrated) are arranged in the blades (not shown) of the turbine on the rotating body side in an annular shape along with the transmitters. Thus, radio waves radiated toward the power-receiving modules05via the power-transmitting antennas02are converted into power by the power-receiving modules05, and the power is supplied as driving power of predetermined loads such as the transmitter main bodies or the sensors. The transmitters driven by such power wirelessly send the detected signals, which indicate the predetermined physical amounts detected by the sensors, such as strains or temperatures of the blades, to a signal processor (not shown) of the stationary side.

As described above, in the wireless power-supplying system, the radio waves radiated from the power-transmitting antennas02arises a phase shift caused by a difference between lengths of the wires04from the oscillators01to the power-transmitting antennas02. That is, since each of the oscillators01oscillates a high frequency signal of a GHz order, an influence on a phase shift of an oscillating signal delayed to correspond to the length of the wire04becomes notable, so that interference with the radio waves from the neighboring power-transmitting antennas02occurs, and a reduction in a level of the received power on a power-receiving side is caused.

To be more specific,FIG. 12is a schematic view conceptually illustrating a positional relationship between a wire and a power-transmitting antenna connected to the wire, and a power-receiving module in the related art. As illustrated in the same figure, a level of power received by one power-receiving module05is most strongly affected by an intensity of a radio wave radiated from the power-transmitting antenna02A that directly faces the power-receiving module05in front of the power-receiving module05. The level of power is then affected by an intensity of radio waves radiated from power-transmitting antennas02B and02C on both sides of the power-transmitting antenna02A. Here, each of the power-receiving modules05directly faces the power-transmitting antennas02B,02A and02C of the stationary side in association with rotation of the blades in sequence.

Here, in the case where lengths of wires04A,04B and04C from oscillators01A,01B and01C to the power-transmitting antennas02A,02B and02C are different, the radio waves radiated from the power-transmitting antennas02A,02B and02C have a predetermined phase difference corresponding to a length difference of the wires04B and04C relative to the wire04A. That is, inFIG. 12, for example, the length of the wire04C from the oscillator05C to the power-transmitting antenna02C becomes longer than that of the wire04A from the oscillator05A to the power-transmitting antenna02A by an amount at which lengths of distances d1, d2and d3are added, and the length of the wire04B from the oscillator05B to the power-transmitting antenna02B is also different from the length of the wire04A.

Thus, in the case where no measures are taken, power level characteristics caused by the radiated radio waves from the power-transmitting antennas02B and02C with respect to the power-transmitting antenna02A are represented by solid lines04B1and04C1inFIG. 13. Here,FIG. 13is a characteristic graph illustrating intensities of the radio waves (power levels) of the power-transmitting antennas02B,02A and02C at a position where the power-receiving module05illustrated inFIG. 12directly faces the power-transmitting antenna02A. In theFIG. 13, wherein the horizontal axis corresponds to positions of the power-transmitting antennas02B,02A and02C. As illustrated inFIG. 13, radio wave intensity peaks of the power-transmitting antennas02B and02C are reduced by a phase difference compared to a radio wave intensity peak of the power-transmitting antenna02A. In this case, a power level P03to which the power-receiving module05directly facing the power-transmitting antenna02A receives power results in adding power levels P02caused by the radio waves radiated from the power-transmitting antennas02B and02C to a power level P01caused by the radio wave radiated from the power-transmitting antenna02A. That is, P03=P01+2·P02.

In contrast, in the wireless power-supplying system according to the related art illustrated inFIG. 11, the phases of the radio waves radiated from the power-transmitting antennas02with the phase shifters06interposed between the oscillators01and the power-transmitting antennas02are arranged. As a result, a reduction in the radio wave intensities of the power-transmitting antennas02B and02C is inhibited, and intensity characteristics of the radio waves (power level characteristics) that are radiated from the power-transmitting antennas02B and02C and are power-received by the power-receiving module05are improved to be indicated by dotted lines04B2and04C2inFIG. 13. Thereby, a power level P05to which the power-receiving module05directly facing the power-transmitting antenna02A receives power results in adding power levels P04caused by the radio waves radiated from the power-transmitting antennas02B and02C to the power level P01caused by the radio wave radiated from the power-transmitting antenna02A. That is, P05=P01+2·P04. In the related art, the phase shifters06are provided, and thereby the power level characteristics are improved by a difference between the power level P05and the power level P04.

In this way, in the related art, oscillating frequencies of the oscillators01are controlled, and phase shift amounts caused by the phase shifters06are adjusted such that the phases of the radio waves radiated from the power-transmitting antennas02are arranged by removing the phase shift caused by the frequencies of the radio waves radiated from the power-transmitting antennas02as well as the lengths of the wires04.

In the wireless power-supplying system according to the related art illustrated inFIG. 11, since the phase shifters06for correcting a phase delay caused by the difference between the lengths of the wires04are arranged, the phase shifters06become a factor that obstructs miniaturization of the facility of the stationary side, and work for adjusting the phase shift amounts of the phase shifters06, which needs to be individually performed on each of the phase shifters06, is troublesome. This requires much time.

In view of the problems of the related art, the present embodiment provides a system for wirelessly supplying power to a rotating body and a turbine system which are capable of arranging the phases of the radio waves radiated from the power-transmitting antennas without providing the phase shifters.

Embodiment of the Wireless Power-Supplying System

FIG. 14is a block diagram illustrating a wireless power-supplying system according to a fifth embodiment. As illustrated inFIG. 14, the wireless power-supplying system according to the present embodiment supplies driving power of transmitters (whose main bodies are not illustrated), which are arranged in rotating bodies such as blades of a turbine, from a plurality of oscillators401via power-transmitting antennas402arranged in an annular shape. Here, electromagnetic energy based on radio waves which power-receiving modules405receive is converted into power, and is supplied as the driving power of the transmitters. The power converted by the power-receiving modules405is also used as power of sensors that detect predetermined physical amounts to be monitored in operation, such as temperatures or strains of the rotating bodies such as the blades of the turbine. Here, the power-receiving modules405are arranged in an annular shape such that a plurality of power-receiving modules405(six power-receiving modules405in the figure) fewer than the power-transmitting antennas402are normally opposed to the power-transmitting antennas402.

FIG. 15is a block diagram illustrating a state in which arrangement of a device on a stationary side of the present embodiment illustrated inFIG. 14is viewed from the front. Here, the present embodiment will be described on the basis of both figures whereFIG. 15is added toFIG. 14.

The oscillators401are arranged in an annular shape to correspond to the power-transmitting antennas402. A single reference oscillator411is driven first by an oscillating trigger signal which a reference trigger generator410generates, and then the oscillators401adjacent to the reference oscillator411in the counterclockwise and clockwise directions are driven by the oscillating trigger signal sent from the single reference oscillator411. Successively, the oscillator401that is adjacent in the counterclockwise direction and the oscillator401that is adjacent in the clockwise direction are sequentially driven by oscillating trigger signals that are sent from the oscillator401adjacent to the oscillator401(close to the reference oscillator411) in the clockwise direction and the oscillator401adjacent to the oscillator401(close to the reference oscillator411) in the counterclockwise direction. That is, the oscillators401initiate predetermined oscillating operations while sequentially moving in the counterclockwise and clockwise directions by the oscillating trigger signals sent from the oscillators401that are adjacent in the clockwise and counterclockwise directions. Here, in the present embodiment, all wires404from the oscillators401to the power-transmitting antennas402via amplifiers403have the same length. That is, all power-transmitting units, each of which is constituted of the oscillator401, the amplifier403, and the power-transmitting antenna402, have the same constitution and are arranged in an annular shape.

Here, a sign of the power-transmitting unit to which the single reference oscillator411driven first belongs is set as (Zero), and signs of the power-transmitting units that are sequentially adjacent to the power-transmitting unit (Zero) in the clockwise and counterclockwise directions are set as A-1, A-2, A-3, . . . , A-(N−2), A-(N−1), and A-N in relation to the counterclockwise direction, and B-1, B-2, B-3, . . . , B-(N−2), B-(N−1), and B-N in relation to the clockwise direction.

Thus, the power-transmitting units (A-1) and (B-1) start to be driven by the oscillating trigger signal which the reference trigger generator410generates. And the power-transmitting unit (A-2) starts to be driven by the oscillating trigger signal which the oscillator401of the power-transmitting unit (A-1) adjacent in the clockwise direction sends. The power-transmitting unit (B-2) starts to be driven by the oscillating trigger signal which the oscillator401of the power-transmitting unit (B-1) adjacent in the counterclockwise direction sends.

Similarly to the above, the power-transmitting units (A-3) to (A-N) and the power-transmitting units (B-3) to (B-N) sequentially start to be driven. As a result, radio waves whose phases are completely identical to each other are radiated from the power-transmitting units (that is, for example, the power-transmitting unit (A-3) and the power-transmitting unit (B-3)) whose numbers are the same after the hyphen in the counterclockwise and clockwise directions. Therefore, radio waves radiated from the power-transmitting unit (A-N) and the power-transmitting unit (B-N) also have the same phase.

In this way, in the present embodiment, since the oscillators401are sequentially driven in the counterclockwise and clockwise directions by the oscillating trigger signals which the oscillators driven just before send, a wire length required for a trigger of the oscillator401(a wire length between output of the oscillator401and trigger input of the oscillator401adjacent to this oscillator401) can be minimized, and a time difference of the oscillating trigger signal between the neighboring transmitting units, which is generated depending on the wire length, can be made small. As a result, in combination with the fact that the time difference between the wires404of the power-transmitting unit is approximately zero, the power-transmitting units (A-1) to (A-N), and the power-transmitting units (B-1) to (B-N) are set to have the same length, a phase shift of the radio waves radiated from the power-transmitting antennas402can be minimized to the difference of the phases favorably. The wires for transmitting the oscillating trigger signal by which the oscillator401is driven can be made shortest. As a result, it is possible to contribute to miniaturization of the system through a reduction of an installation space of the device of the stationary side or the like.

To be more specific, as illustrated inFIG. 16that illustrates characteristics equivalent toFIG. 12in the related art, a level of power received by a single power-receiving module405is most strongly affected by an intensity of a radio wave radiated from a power-transmitting antenna402A that directly faces the power-receiving module405. And the level of power then is affected by intensities of radio waves radiated from power-transmitting antennas402B and402C on both sides of the power-transmitting antenna402A. Here, lengths of wires404A,404B and404C from oscillators401A,401B and401C to the power-transmitting antennas402A,402B and402C are the same, and oscillation timings of the oscillator401A,401B and401C also arise only very slight deviation. Thus, the radio waves radiated from the power-transmitting antennas402A,402B and402C are arranged in the same polarity plane.

FIG. 17is a characteristic view illustrating an intensity of a radio wave (a power level) at a position where the power-receiving module405illustrated inFIG. 16directly faces the power-transmitting antennas402, and corresponds toFIG. 13. As illustrated inFIG. 17, in this case, power levels obtained from the power-transmitting antennas402B and402C are only slightly lower than ideal power levels that are obtained from the power-transmitting antennas402B and402C and are indicated by dotted lines4B2and4C2inFIG. 17, and are nearly the same as indicated by solid lines4B1and4C1inFIG. 17. Here, the ideal power level is a power level when a phase difference between the radio waves radiated from the power-transmitting antennas402A,402B and402C is zero, and is a power level equivalent to that of the radio wave obtained from the power-transmitting antenna402A indicated by a solid line4A1inFIG. 17.

In the present embodiment, a power level P3when the power-receiving module405directly facing the power-transmitting antenna402A receives power is obtained by adding power levels P2caused by the radio waves radiated from the power-transmitting antennas402B and402C to a power level P1caused by the radio wave radiated from the power-transmitting antenna402A. That is, P3=P1+2·P2. Meanwhile, a maximum power level P5of this case is obtained by adding two times the power level P4of the dotted lines4B2and4C2at a position where the power-receiving module405directly faces the power-transmitting antenna402A to the power level P1, that is, expressed by P5=P1+2·P4. The power level P4is only slightly lower than the power level P5. That is, in the present embodiment, even without using the phase shifters as in the related art, the power level P4that is equivalent to or higher than in the related art can be obtained. Especially, in the case where the power-transmitting units (A-N) and (B-N) thought that the phases are completely identical to each other are included, a most favorable power level characteristic is obtained.

In the present embodiment, the power-transmitting units (A-1) to (A-N) and the power-transmitting units (B-1) to (B-N), both of which are an even number in number, are provided by an N number in the counterclockwise and clockwise directions except the reference oscillator411, but are not limited thereto. An odd number will do. In the case of the even number, as described above, the phases of the radio waves radiated from the power-transmitting units (A-N) and (B-N) that are located at a position opposite to the reference oscillator411can be completely arranged.

Embodiment of the Turbine System

FIG. 18is a block diagram illustrating a gas turbine system according to a sixth embodiment of the present invention. As illustrated in the same figure, a gas turbine main body500has a compressor501, a fuel tank502, a combustion chamber503, a turbine chamber504, blades505, vanes506, and a rotary shaft507, and outputs a force acting on the blades505as a rotating driving force of the rotary shaft507. To be more specific, the compressor501compresses suctioned air, and supplies the compressed air to the combustor503. Fuel stored in the fuel tank502is pumped by a pump508and is supplied to the combustion chamber503. As a result, in the combustion chamber503, the fuel is burnt under the compressed air to generate a high-temperature high-pressure driving gas. This driving gas is expanded between the vanes506and the blades505in the turbine chamber504to generate a driving force, and rotates the rotary shaft507about an axis via the blades505.

The gas turbine system according to the present embodiment is formed by combining the gas turbine main body500, a wireless power-supplying system200, and an operation monitoring system300. The wireless power-supplying system200relates to the above embodiment described on the basis ofFIG. 14. Thus, inFIG. 18, the same portions as inFIG. 14are given the same reference signs, and duplicate description will be omitted.

A plurality of sensors520for measuring strains and temperatures of the blades505are arranged in the blades505that are rotating bodies of the turbine main body500in the present embodiment. Detected signals that represent predetermined physical amounts detected by the sensors520are radiated as radio waves toward antennas532of a stationary side (a ground side) via a plurality of transmitters521arranged in the blades505that are the rotating bodies along with the sensors520. The detected signals received by receivers533via the antennas532are generated as information that represents an operation situation of the gas turbine main body500by performing predetermined signal processing at a signal processor534and are displayed on a display535as needed. Here, each of the transmitters521has a power-receiving module405(seeFIG. 14) installed therein, and necessary driving power is wirelessly supplied from the wireless power-supplying system200via the power-receiving modules405.

Therefore, according to the present embodiment, predetermined operation information on the blades505of the gas turbine500can be stably sent to the stationary side over a long period of time by the transmitters521that are supplied with driving power with high efficiency by the wireless power-supplying system illustrated inFIG. 14. As a result, qualified operation monitoring of the gas turbine main body500can be performed.

In the above embodiment, the blades of the gas turbine have been described as the rotating bodies by way of example, but are not limited thereto. As long as power as electromagnetic energy is supplied to the transmitters arranged in the rotating bodies, the rotating body is particularly no restriction, and can be widely applied.

INDUSTRIAL APPLICABILITY

According to the wireless power supply device, the telemetric measuring system, the rotating machine, the system for wirelessly supplying power to a rotating body, and the turbine system, a flexibility of installation can be improved, and complication and troublesomeness of work can be inhibited.

REFERENCE SIGNS LIST