Abstract:
Provided is a power generating device capable of effectively cooling an expander, a power generator, and a control device even in the outdoors. In the power generating device, an expander driven by steam, a power generator coupled with and driven by the output shaft of the expander, and a control device are placed on a base and housed in a storage box. The storage box has a partition member provided upright from the base. The control device is housed in one side partitioned by the partition member, and the expander and the power generator are housed in the other side. The base is provided with a ventilation path for taking outside air into the storage box, and the ceiling portion of the storage box is provided with a net plate and a protective roof provided above and around the net plate with a predetermined space there between to enable air to be discharged outside. The expander and the power generator are installed securely on a frame provided upright on the base and set apart from the base.

Description:
TECHNICAL FIELD  
       [0001]    The present invention relates to an art of a power generating device, especially an art of a power generating device having an expander driven by steam, a power generator connected to and driven by an output shaft of the expander, a control device, a base and a storage box. 
       BACKGROUND ART  
       [0002]    Conventionally, a power generating device is known which has an expander whose working medium is water and a power generator connected to and driven by an output shaft of the expander. In the expander, the output shaft is rotated by expanding water at a vapor phase with high temperature and high pressure (hereinafter, simply referred to as “steam”) in an expansion chamber formed by a fixed scroll and a swinging scroll. The power generator is connected to the output shaft and driven by rotation of the output shaft. 
         [0003]    A package type power generating device is known in which the expander and the power generator are housed in one storage box (for example, see the Patent Literature 1). 
         [0004]    A unit device is known in which a scroll type fluid machine is housed in a storage box, wherein an air-cooling ventilation duct is provided in a lower part of the scroll type fluid machine and connected to an intake side of an air-cooling fan (for example, see the Patent Literature 2). 
       PRIOR ART REFERENCE 
     Patent Literature 
       [0005]    Patent Literature 1: the Japanese Patent Laid Open Gazette 2007-74894 
         [0006]    Patent Literature 2: the Japanese Patent Laid Open Gazette 2000-110767 
       DISCLOSURE OF INVENTION 
     Problems to Be Solved by the Invention 
       [0007]    However, in the case in which duct and fan for air-cooling such as those of the unit device are provided in the conventional package type power generating device, when an air passage is provided in a vertical center of the storage box, a large fan is required for circulating air. When the expander is mounted on a floor, a circumference of a lower part of the expander is small and poorly ventilated, whereby the expander cannot be cooled enough. When the package type device is provided outdoors, foreign substances such as rain may enter the device via an intake hole and an exhaust hole provided in the storage box. 
         [0008]    The present invention is provided in consideration of the conditions as mentioned above, and the purpose of the invention is to provide a power generating device which can cool an expander, a power generator and a control device efficiency even at outdoors. 
       Means for Solving the Problems 
       [0009]    The problems to be solved by the present invention have been described above, and subsequently, the means of solving the problems will be described below. 
         [0010]    According to the present invention, in a power generating device, an expander driven by steam, a power generator connected to and driven by an output shaft of the expander, and a control device are mounted on a base and housed in a storage box. The storage box has a partition member. The partition member is provided upright on the base. The control device is housed in one of sides of the storage box divided by the partition member, and the expander and the power generator are housed in the other side thereof A ventilation path for introducing outside air to an inside of the storage box is provided in the base. In a ceiling of the storage box, a net plate is provided, and a protective roof is provided above and around the net plate at a predetermined distance, whereby air can be discharged to the outside. The expander and the power generator are fixed to a frame provided upright on the base. The expander and the power generator are separated from the base. 
         [0011]    According to the present invention, a blower sending air from a side of the control device to a side of the expander is provided in the partition member. 
         [0012]    According to the present invention, the power generator is arranged below the expander. The expander has the output shaft projected horizontally. The power generator has an input shaft projected horizontally. The output shaft and the input shaft are connected by a belt. 
         [0013]    According to the present invention, in an attachment part for the expander in the frame, an adjustment part is provided which can move the expander vertically for a fixed distance. 
       Effect of the Invention 
       [0014]    The present invention configured as the above brings the following effects. 
         [0015]    According to the present invention, air flows upward from the lower side by the chimney effect, whereby the expander, the power generator and the control device can be cooled efficiently. By separating the expander and the power generator from the base, a passage in which the air flows is made wider, whereby the expander, the power generator and the control device can be cooled efficiently. By separating the expander and the power generator from the base, a space for the maintenance of the expander and the power generator is provided, whereby the maintenance can be performed efficiently. Entry of foreign substances such as rain can be prevented so as to improve durability, whereby the maintenance work can be omitted. 
         [0016]    According to the present invention, the air becomes easy to flow upward from the lower side in the side of the control device in which the chimney effect is low, whereby the expander, the power generator and the control device can be cooled further efficiently. 
         [0017]    According to the present invention, by separating the expander and the power generator from the base, the space for the maintenance of the expander and the power generator is provided, whereby the maintenance can be performed efficiently. The tension of the belt is generated by weight of the power generator, whereby the work of adjusting the tension of the belt can be simplified. 
         [0018]    According to the present invention, by separating the expander and the power generator from the base, the space for the maintenance of the expander and the power generator is provided, whereby the maintenance can be performed efficiently. The work of adjusting the tension of the belt can be performed by moving vertically and fixing the expander or the power generator, whereby the work can be simplified. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0019]      FIG. 1  is a block diagram of an entire configuration of a power generating device according to an embodiment of the present invention. 
           [0020]      FIG. 2  is a side view partially in section of a storage box. 
           [0021]      FIG. 3  is a rear view partially in section of the storage box. 
           [0022]      FIG. 4  is a plan view of a base. 
           [0023]      FIG. 5  is a side view partially in section of an expander and a power generator. 
           [0024]      FIG. 6  is a side view partially in section of the expander and the power generator. 
           [0025]      FIG. 7  is a side view partially in section of the storage box and the expander at the time of taking out the expander. 
       
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
       [0026]    Next, an explanation will be given on a mode for carrying out the invention. 
         [0027]    As shown in  FIG. 2 , a direction of an arrow A is defined as a front direction of a storage box  22 . 
         [0028]    Firstly, an explanation will be given on a configuration of a power generating device  1  referring to a block diagram of  FIG. 1 . 
         [0029]    The power generating device  1  has an expander  2  driven by steam, a power generator  3  connected to and driven by an output shaft  43  of the expander  2 , a steam generator  4 , a working medium supply pump  6 , a condenser  8 , and a control device  50 . 
         [0030]    The expander  2  is a scroll type fluid machine, and steam with high temperature and high pressure is supplied as a working medium from the steam generator  4  via a working medium passage  12  to the expander  2 . The expander  2  drives the power generator  3  with the supplied steam as the working medium so as to generate electric power. Water is supplied from the working medium supply pump  6  via a working medium passage  15  to the steam generator  4 . The working medium supply pump  6  sucks water, generated by condensing the steam by the condenser  8 , via a working medium passage  17 , a working medium tank  25  and a working medium passage  18 . The steam discharged from the expander  2  is supplied via a working medium passage  19  to the condenser  8 . 
         [0031]    In the power generating device  1  configured as the above, the expander  2  exchanges energy of the steam with high temperature and high pressure generated by the steam generator  4  into rotational power so as to drive the power generator  3 . The steam discharged from the expander  2  is condensed into the water by the condenser  8 , and subsequently supplied to the expander  2  by the steam generator  4  as the steam with high temperature and high pressure again. 
         [0032]    The control device  50  includes a CPU, a storage means and the like, and the CPU is a central processing unit and the storage means is a ROM in which control programs, maps and the like are stored and a RAM in which inputted data and the like are stored. The control device  50  switches a valve  12   a  provided in the working medium passage  12  so as to control an amount of the steam with high temperature and high pressure. The control device  50  controls a drive amount of the working medium supply pump  6  so as to control an amount of suction of the water generated by condensing the steam by the condenser  8 . Accordingly, pressure of the steam inside the expander  2  can be controlled. 
         [0033]    Next, an explanation will be given on arrangement of the power generating device  1  referring to  FIGS. 2 and 3 . 
         [0034]    The expander  2 , the power generator  3  and the control device  50  constituting the power generating device  1  are mounted on a base  21  and housed in the storage box  22 . 
         [0035]    The storage box  22  is a rectangular parallelepiped box and housed therein with the expander  2 , the power generator  3 , the control device  50 , the working medium tank  25  in which the liquid working medium is stored, and the working medium supply pump  6 . A lower surface of the storage box  22  is opened, and the storage box  22  is provided above the base  21 . 
         [0036]    The base  21  is a member installed in a foundation such as the ground and is configured in that a plurality of steel materials  21   a,  which are U-like or rectangular shaped and generally called channel steel or rectangular steel pipes, are arranged longitudinally and laterally and fixed frame-like, and a plate member  21   b  is fixed to the upper surface of the frame. As shown in  FIGS. 2 ,  3  and  4 , a ventilation path  21   c  for introducing outside air to the inside of the storage box  22  is provided in the base  21 . The ventilation path  21   c  includes long holes  21   d  provided in side surfaces of the steel materials  21   a  and long holes  21   e  provided in a part of the plate member  21   b.  The long holes  21   d  provided in the plate member  21   b  are arranged below a space in the storage box  22  in which the control device  50  is arranged and below a space in the storage box  22  in which the expander  2  and the power generator  3  are arranged. As sown arrows in Fig. arrows in  FIG. 4 , air passing through the long holes  21   d  passes through the inner space of the base  21  and sent above via the long holes  21   e.    
         [0037]    Inside the storage box  22 , a plurality of frames  27  are provided. 
         [0038]    The frames  27  include vertical frames  27   a  provided upright on the base  21  and a plurality of lateral frames  27   b  connecting upper ends and middle parts of the vertical frames  27   a.  In this embodiment, the four vertical frames  27   a  are provided, and lower ends thereof are provided upright on an upper surface of the base  21 . The four vertical frames  27   a  are arranged at vertexes of a rectangular when viewed in plan, and the lateral frames  27   b  are provided laterally on sides of the rectangular joining the vertexes. The lateral frames  27   b  are provided in parallel to the horizontal direction, and connects the upper ends of the vertical frames  27   a  to each other and connects the middle parts of the vertical frames  27   a  to each other. 
         [0039]    The storage box  22  has a partition member  30 , and the partition member  30  is provided upright from the base  21 . One of sides divided by the partition member  30  is housed therein with the control device  50 , and the other side is housed therein with the expander  2  and the power generator  3 . 
         [0040]    In a ceiling of the storage box  22 , a net plate  31  is provided, and a protective roof  32  is provided above and around the net plate  31  at a predetermined distance, whereby air can be discharged to the outside. 
         [0041]    The net plate  31  is provided so as to cover a vent hole opened in the ceiling of the storage box  22  above the expander  2 . In this embodiment, an outer perimeter of the net plate  31  is fixed to an inner side of the vent hole which is a square one size smaller than the ceiling. The net plate  31  prevents invasion of foreign substances such as dust and insects. 
         [0042]    The protective roof  32  is provided above and around the net plate  31 . An edge part bended downward is provided at an outer perimeter of the protective roof  32  so as to cover the ceiling of the storage box  22 . The edge part is extended downward over a gap between the ceiling and the protective roof  32  so as to prevent invasion of rain and the like from the side. A gap is also provided between an inner perimeter of the edge part and an outer peripheral surface of the storage box  22 . 
         [0043]    Next, an explanation will be given on arrangement of various devices inside the storage box  22 . 
         [0044]    The storage box  22  is divided by the partition member  30  into two spaces, that is, the side in which the control device  50  is housed (hereinafter, referred to as “the side of the control device  50 ”) and the side in which the expander  2  and the power generator  3  is housed (hereinafter, referred to as “the side of the expander  2 ”). Namely, the partition member  30  is provided upright in a longitudinal middle part of the base  21  and divides the storage box  22  into the two spaces by a plate body, and the front side is set to a housing chamber for the control device  50  and the rear side is set to a housing chamber for the expander  2  and the power generator  3 . 
         [0045]    In an upper part of the side of the control device  50  in the storage box  22 , the control device  50  is arranged. A vent hole  33  is provided below the control device  50 , and an opening is provided in a surface of the partition member  30  opposite to the control device  50 , and a blower  35  is provided in the opening so as to send air from the side of the control device  50  to the side of the expander  2 . 
         [0046]    The vent hole  33  is provided above a long hole  21   e  provided in the base  21 . Air passing through the ventilation path  21   c  of the base  21  is sent via the vent hole  33  to a space of the side of the control device  50  so as to cool the control device  50 . The blower  35  sends the air, which is sent via the vent hole  33 , from the side of the control device  50  to the side of the expander  2 , and includes a propeller fan, a sirocco fan or the like for example. 
         [0047]    In the storage box  22 , in a lower part of the side of the expander  2 , the power generator  3  is arranged at the side of the control device  50 . The power generator  3  has an input shaft  41 , and the input shaft  41  is projected along the horizontal direction and perpendicularly to the longitudinal direction. The power generator  3  is fixed to the frame  27  provided upright on the base  21 . In more detail, the power generator  3  has an attachment plate  3   a  projected toward the frame  27 . The attachment plate  3   a  is provided upward and downward from a front side of a center of the power generator  3 . A screw hole is provided at an end of the attachment plate  3   a.  A power generator attachment plate  27   c  is provided laterally between the two vertical frames  27   a  of the frame  27 . A long hole  27   d  as an adjustment part is provided in the power generator attachment plate  27   c.  A lengthwise direction of the long hole  27   d  is arranged vertically. By inserting a screw into the screw hole of the attachment plate  3   a  and the long hole  27   d  and fastening, the frame  27  is fixed to the power generator  3 . The long hole  27   d  is arranged so that the power generator  3  can be fixed above and separately from the base  21  even if the screw is fastened to a lower end of the long hole  27   d.    
         [0048]    Accordingly, the power generator  3  can be fixed separately from the base  21 . By changing a position of the screw vertically within a vertical length of the long hole  27   d,  a vertical position of the power generator  3  can be adjusted so as to control tension of a belt  48  discussed later. 
         [0049]    An input pulley  42  is provided on the input shaft  41  of the power generator  3 . The input pulley  42  is provided at an end of the input shaft  41 , and the belt  48  is wound between the input pulley  42  and an output pulley  47  discussed later. 
         [0050]    In the storage box  22 , in the lower part of the side of the expander  2  and behind the power generator  3 , the working medium tank  25  and the working medium supply pump  6  are arranged. The working medium tank  25  and the working medium supply pump  6  are fixed to the base  21 . 
         [0051]    The working medium which is condensed by the condenser  8  and becomes a liquid is stored in the working medium tank  25 . 
         [0052]    Above the power generator  3 , the expander  2  is arranged. The expander  2  has output shafts  43  for taking out rotational power. The upper and lower two output shafts  43  are provided. A sprocket  45  is provided at a middle part of each of the output shafts  43 , and a chain  46  is wound between the sprockets  45 , whereby the two output shafts  43  are rotated synchronously. An axial direction of each of the output shafts  43  is in parallel to the input shaft  41  of the power generator  3 . 
         [0053]    The expander  2  is fixed to the frame  27  provided upright on the base  21 . In more detail, the expander  2  has an attachment plate  2   a  projected toward the frame  27 . The attachment plate  2   a  is projected upward and downward from a front side of a center of the expander  2 . A screw hole is provided at an end of the attachment plate  2   a.  A long hole  27   e  as an adjustment part is provided in a rear surface of the lateral frame  27   b.  A lengthwise direction of the long hole  27   e  is arranged vertically. By inserting a screw into the screw hole of the attachment plate  2   a  and the long hole  27   e  and fastening, the frame  27  is fixed to the expander  2 . The long hole  27   e  is arranged so that the expander  2  can be fixed above and separately from the power generator  3  even if the screw is fastened to a lower end of the long hole  27   e.  Accordingly, the expander  2  can be fixed above and separately from the base  21  and the power generator  3 . By changing a position of the screw vertically within a vertical length of the long hole  27   e,  a vertical position of the expander  2  can be adjusted so as to control tension of the belt  48 . 
         [0054]    The output pulley  47  is provided on the lower output shaft  43  of the expander  2 , and the belt  48  is wound between the output pulley  47  and the input pulley  42  of the power generator  3  and connected thereto. 
         [0055]    Above the working medium tank  25  and behind the expander  2 , the condenser  8  is arranged. 
         [0056]    The working medium passage  12  supplying the steam with high temperature and high pressure from the steam generator  4  provided outside the storage box  22  to the expander  2  is provided from an upper part of a side surface of the storage box  22  to a space at the side of the expander  2 , and one of ends of the working medium passage  12  is connected to the expander  2 . 
         [0057]    The working medium passage  19  sending the steam from the expander  2  to the condenser  8  is provided in the space at the side of the expander  2  in the storage box  22 , and one of ends of the working medium passage  19  is connected to the expander  2  and the other end thereof is connected to the condenser  8 . 
         [0058]    The working medium passage  17  supplying the water generated by condensing the steam by the condenser  8  is provided in the space at the side of the expander  2  in the storage box  22 , and one of ends of the working medium passage  17  is connected to the condenser  8  and the other end thereof is connected to the working medium tank  25 . 
         [0059]    The working medium passage  18  sucking the water stored in the working medium tank  25  is provided in the space at the side of the expander  2  in the storage box  22 , and one of ends of the working medium passage  18  is connected to the working medium tank  25 . The other end thereof is branched, and one of branched ends thereof is connected to the working medium supply pump  6  and the other branched end thereof is connected to a high pressure liquid supply passage  51 . The other end of the high pressure liquid supply passage  51  is connected to the center of the expander  2 . The high pressure liquid is supplied via the center of the expander  2  to an inside of the expander  2  and used as a lubricative material for the expander  2 . 
         [0060]    A pipe (not shown) is provided at a front end of the working medium supply pump  6 , and the pipe is communicated with the working medium passage  15  at the outside. 
         [0061]    As mentioned above, by arranging the expander  2  above the storage box  22 , an upper part of the storage box  22  is warmer than a lower part thereof. Accordingly, air in the upper part of the storage box  22  with high temperature and low density is moved upward further and discharged outside via the net plate  31 , and in the lower part of the storage box  22  with low temperature, an airflow using so-called chimney effect is generated in which negative pressure is operated and a fluid flows from the ventilation path  21   c  of the base  21 . 
         [0062]    The blower  35  sending air from the side of the control device  50  in the storage box  22  is provided. By the chimney effect, negative pressure is also operated in the space of the side of the control device  50  with lower temperature than the side of the expander  2  so that an airflow by the chimney effect is generated in addition to ventilation by the blower  35 , whereby the blower  35  can be configured smaller than the usual. 
         [0063]    Next, an explanation will be given on a method controlling the tension of the belt  48  connecting the output pulley  47  of the expander  2  to the input pulley  42  of the power generator  3 . 
         [0064]    Firstly, the expander  2  is fixed to the lateral frame  27   b  at the lower end of the long hole  27   e,  and the belt  48  is wound between the output pulley  47  and the input pulley  42 . Subsequently, as shown by two-dot lines in  FIG. 5 , the screw fixing the expander  2  is loosened and the screw is moved to an upper end of the long hole  27   e  so as to move the expander  2  upward. Accordingly, the tension of the belt  48  is increased. Then, the screw is fastened again at the moved position of the expander  2  so as to fix the expander  2  to the lateral frame  27   b.  According to the configuration, the tension of the belt  48  can be adjusted easily. 
         [0065]    Similarly, as shown in  FIG. 6 , the power generator  3  is fixed to the frame  27  at an upper end of the long hole  27   d,  and the belt  48  is wound between the output pulley  47  and the input pulley  42 . Subsequently, the screw fixing the power generator  3  is loosened and the screw is moved to the lower end of the long hole  27   d  so as to move the power generator  3  downward. Accordingly, the tension of the belt  48  is increased. Then, the screw is fastened again at the moved position of the power generator  3  so as to fix the power generator  3  to the frame  27 . According to the configuration, work of adjusting the tension of the belt  48  can be simplified. 
         [0066]    When the screw is moved to a middle part of the long hole  27   d  and then the power generator  3  is fixed, the power generator  3  is moved downward by weight of the power generator  3 , whereby the tension is generated on the belt  48 . Accordingly, work of adjusting the tension of the belt  48  can be performed easily. 
         [0067]    A screw hole for fixing an expander take-out rail member  61  is provided in the lateral frame  27   b.  The expander take-out rail member  61  is detached under normal driving, and when the expander  2  is taken out at the time of maintenance or the like, the expander take-out rail member  61  is fixed to the lateral frame  27   b  by a screw. 
         [0068]    The expander take-out rail member  61  includes H-section steel and is attached to the lateral frame  27   b  so that a lengthwise direction of the expander take-out rail member  61  is in agreement with a horizontal direction of the storage box  22  and in parallel to a lateral direction of the storage box  22 . At the time of attachment, a tip of the expander take-out rail member  61  is projected laterally from the storage box  22  so that the expander  2  can be taken out from the storage box  22 . 
         [0069]    Rail pulleys  62  can be attached to both ends of the upper output shaft  43  of the expander  2 . The rail pulleys  62  have fixation parts  62   a  fixed to the output shaft  43  and rollers  62   b  provided at both sides of the expander take-out rail member  61  so as to pinch the expander take-out rail member  61 . The fixation parts  62   a  have screw parts  62   c,  and a vertical position can be adjusted by rotating the screw parts  62   c.  By putting the rollers  62   b  on an overhang part, which are provided in a lower side of the expander take-out rail member  61 , and rotating the rollers  62   b,  the rail pulleys  62  can slid along the expander take-out rail member  61 . 
         [0070]    When the expander  2  is taken out from the storage box  22 , the expander take-out rail member  61  is fixed to the lateral frame  27   b  by the screw, and the rail pulleys  62  are slid from an end of the expander take-out rail member  61  along the expander take-out rail member  61 . Then, the fixation parts  62   a  of the rail pulleys  62  are fixed respectively to both ends of the output shaft  43  of the expander  2 . By loosening the screw fixing the frame  27  to the expander  2 , the expander  2  is supported while hung via the rail pulleys  62  by the expander take-out rail member  61 . By sliding the rail pulleys  62  to an outer side of the storage box  22 , the expander  2  is moved toward the storage box  22  while hung. 
         [0071]    According to the configuration, the expander  2  can be moved easily to the outer side of the storage box  22 , whereby the expander  2  can be maintained efficiently. 
         [0072]    As the above, in the power generating device  1 , the expander  2  driven by the steam, the power generator  3  connected to and driven by the output shaft  43  of the expander  2 , and the control device  50  are mounted on the base  21  and housed in the storage box  22 . The storage box  22  has the partition member  30 . The partition member  30  is provided upright on the base  21 . The control device  50  is housed in one of the sides of the storage box  22  divided by the partition member  30 , and the expander  2  and the power generator  3  are housed in the other side thereof. The ventilation path  21   c  for introducing outside air to the inside of the storage box  22  is provided in the base  21 . In the ceiling of the storage box  22 , the net plate  31  is provided, and the protective roof  32  is provided above and around the net plate  31  at the predetermined distance, whereby air can be discharged to the outside. The expander  2  and the power generator  3  are fixed to the frame  27  provided upright on the base  21 , and the expander  2  and the power generator  3  are separated from the base  21 . 
         [0073]    According to the configuration, air flows upward from the lower side by the chimney effect, whereby the expander  2 , the power generator  3  and the control device  50  can be cooled efficiently. By separating the expander  2  and the power generator  3  from the base  21 , a passage in which the air flows is made wider, whereby the expander  2 , the power generator  3  and the control device  50  can be cooled efficiently. By separating the expander  2  and the power generator  3  from the base  21 , a space for the maintenance of the expander  2  and the power generator  3  is provided, whereby the maintenance can be performed efficiently. Entry of foreign substances such as rain can be prevented so as to improve durability, whereby the maintenance work can be omitted. 
         [0074]    The blower  35  sending air from the side of the control device  50  to the side of the expander  2  is provided in the partition member  30 . 
         [0075]    According to the configuration, the air becomes easy to flow upward from the lower side in the side of the control device  50  in which the chimney effect is low, whereby the expander  2 , the power generator  3  and the control device  50  can be cooled further efficiently. 
         [0076]    The power generator  3  is arranged below the expander  2 . The expander  2  has the output shaft  43  projected horizontally. The power generator  3  has the input shaft  41  projected horizontally. The output shaft  43  and the input shaft  41  are connected by the belt  48 . 
         [0077]    According to the configuration, by separating the expander  2  and the power generator  3  from the base  21 , the space for the maintenance of the expander  2  and the power generator  3  is provided, whereby the maintenance can be performed efficiently. The tension of the belt  48  is generated by weight of the power generator  3 , whereby the work of adjusting the tension of the belt  48  can be simplified. 
         [0078]    In the attachment part for the expander  2  in the frame  27 , the long hole  27   e  is provided which can move the expander  2  vertically for a fixed distance. 
         [0079]    According to the configuration, by separating the expander  2  and the power generator  3  from the base  21 , the space for the maintenance of the expander  2  and the power generator  3  is provided, whereby the maintenance can be performed efficiently. The work of adjusting the tension of the belt  48  can be performed by moving vertically and fixing the expander  2 , whereby the work can be simplified. 
         [0080]    The embodiment of the present invention has been explained above. However, the above configuration may be changed as described below. 
         [0081]    The number and shape of the long holes  21   d  and  21   e  of the base  21  are not limited to the above. For example, the three or more long holes  21   d  may alternatively be provided, and the two, four or more long holes  21   e  may alternatively be provided. 
         [0082]    The adjustment parts adjusting the vertical positions of the expander  2  and the power generator  3  are not limited to the long holes  27   d  and  27   e.  For example, long holes may alternatively be provided in the attachment plate  2   a  of the expander  2  and the attachment plate  3   a  of the power generator  3 . 
         [0083]    The arrangement and number of the blower  35  are not limited to the above. For example, two or more blowers may alternatively be provided in the partition member  30 . 
       INDUSTRIAL APPLICABILITY 
       [0084]    The present invention can be used for a power generating device having an expander driven by steam, a power generator connected to and driven by an output shaft of the expander, a control device, a base and a storage box. 
       DESCRIPTION OF NOTATIONS  
       [0085]      1  power generating device 
         [0086]      2  expander 
         [0087]      3  power generator 
         [0088]      21  base 
         [0089]      21   c  ventilation path 
         [0090]      22  storage box 
         [0091]      27  frame 
         [0092]      27   e  long hole (adjustment part) 
         [0093]      30  partition member 
         [0094]      31  net plate 
         [0095]      32  protective roof 
         [0096]      35  blower 
         [0097]      41  input shaft 
         [0098]      43  output shaft 
         [0099]      48  belt 
         [0100]      50  control device