Tube gallery for gas turbine engine

A tube gallery for a gas turbine engine includes a body. The body includes an external surface. The body also includes a plurality of channels defined in the body. Each channel includes an inlet disposed on the external surface, an outlet spaced apart from the inlet and disposed on the external surface, and a passage extending between and fluidly communicating the inlet to the outlet. The passage of each channel has a non-circular cross-sectional shape. The non-circular cross-sectional shape has a first maximum dimension along a first direction and a second maximum dimension along a second direction orthogonal to the first direction. The first maximum dimension is greater than the second maximum dimension by a factor of at least 1.2.

CROSS-REFERENCE TO RELATED APPLCATIONS

This application is based upon and claims the benefit of priority from British Patent Application GB 2111518.3, filed on Aug. 11, 2021, the entire contents of which are hereby incorporated by reference.

BACKGROUND

Technical Field

The present disclosure relates to a gas turbine engine, and in particular to a tube gallery for the gas turbine engine.

Description of Related Art

A tube gallery is associated with a gas turbine engine for establishing fluid communication between two or more components of the gas turbine engine. Such tube galleries may be accommodated in confined spaces when it is required to have fluid communication between two components of the gas turbine engine that are mounted close to each other.

Currently, tube galleries are manufactured by drilling passages through a side surface of a plate of the tube gallery. The drilled passages may facilitate fluid transfer between different components of the gas turbine engine. Such conventional tube galleries typically include straight passages having a circular cross-section as the passages of the tube gallery are created by drilling operations. Further, as the passages typically include the circular cross-section, a height of the tube gallery may be governed by passages having a highest diameter. Moreover, as the drilling operation are performed through the side surface of the tube gallery, fluid stagnation zones may be created in the passages proximate to the side surfaces. Such fluid stagnation zones may lead to undesirable fluid accumulation within the passages. Further, side holes created during the drilling operations may have to be blanked using a blanking plug as they are not functionally required, thereby increasing an additional manufacturing step.

Conventional tube galleries may also exhibit a high-pressure loss. Specifically, pressure losses may occur at one or more sharp bends where the drilled passages intersect each other. Further, conventional tube galleries typically tend to be heavy as the passages may not be optimally arranged. As the passages are not arranged in an optimal manner, it may be challenging to remove material from the body of the tube gallery, which may also increase material usage for a particular tube gallery.

SUMMARY

In a first aspect, there is provided a tube gallery for a gas turbine engine. The tube gallery includes a body formed as a single integral component. The body defines mutually orthogonal first, second, and third axes. The first and second axes define a first plane, the second and third axes define a second plane orthogonal to the first plane, and the first and third axes define a third plane orthogonal to each of the first and second planes. The body includes an external surface including an upper surface, a lower surface opposite to the upper surface, and a side surface extending between the upper surface and the lower surface. The upper surface and the lower surface substantially extend along the first and second axes. The side surface substantially extends along the third axis. The body also includes a plurality of channels defined in the body. Each channel includes an inlet disposed on the external surface, an outlet spaced apart from the inlet and disposed on the external surface, and a passage extending between and fluidly communicating the inlet to the outlet. The inlets of the plurality of channels are spaced apart from each other. The outlets of the plurality of channels are spaced apart from each other. The passage of each channel from the plurality of channels has a non-circular cross-sectional shape in one of the first, second, and third planes. The non-circular cross-sectional shape has a first maximum dimension along a first direction and a second maximum dimension along a second direction orthogonal to the first direction. The first maximum dimension is greater than the second maximum dimension by a factor of at least 1.2.

The present disclosure provides the tube gallery for use with gas turbine engines. The passages in the tube gallery are arranged in a manner that may allow removal of material from the tube gallery, thereby providing the tube gallery having a reduced weight. More particularly, the passages of the tube gallery may be arranged in proximity to each other which may facilitate removal of material from the tube gallery. Further, the passages may include any non-circular cross-sectional shape. In various embodiments, the non-circular cross-sectional shape of the passages may be chosen based on a shape of the body of the tube gallery and/or other factors, such as desired dimensions of the body owing to space constraints. The non-circular cross-sectional shape may have a high aspect ratio and the non-circular cross-sectional shape may be selected such that the tube gallery may exhibit increased strength and rigidity. Furthermore, pressure losses in the tube gallery may be minimized as the passages of the tube gallery eliminate sharp bends at turn corners.

Moreover, the tube gallery may be manufactured using additive layer manufacturing techniques, such as three-dimensional printing, or other manufacturing techniques, such as moulding and/or casting methods. Specifically, the tube gallery may be manufactured using any manufacturing technique that may allow creation of passages having the non-circular cross-sectional shapes. Using these manufacturing techniques, the passages may be optimally arranged to allow reduction in weight based on removal of material from the tube gallery. Further, by virtue of the present disclosure, it may be possible to provide the passages directly between the inlets and the outlets, thereby eliminating fluid stagnation zones in the tube gallery.

In some embodiments, at least one of the inlet and the outlet of at least one channel from the plurality of channels is disposed on the upper surface.

In some embodiments, at least one of the inlet and the outlet of at least one channel from the plurality of channels is disposed on the lower surface.

In some embodiments, at least one of the inlet and the outlet of at least one channel from the plurality of channels is disposed on the side surface.

In some embodiments, the inlet of at least one channel from the plurality of channels has a circular cross-sectional shape or a non-circular cross-sectional shape.

In some embodiments, the outlet of at least one channel from the plurality of channels has a circular cross-sectional shape or a non-circular cross-sectional shape.

In some embodiments, at least one channel from the plurality of channels includes an inlet boss comprising the inlet extending to the passage. The inlet boss is inclined to or parallel to the passage of the at least one channel.

In some embodiments, at least one channel from the plurality of channels includes an outlet boss comprising the outlet extending to the passage. The outlet boss is inclined to or parallel to the passage of the at least one channel.

In some embodiments, the passage of at least one channel from the plurality of channels is at least one of straight, curved, or spiral.

In some embodiments, at least one channel from the plurality of channels includes a plurality of outlets. The passage of the at least one channel includes a common portion fluidly communicating with the inlet and a plurality of branched portions branching from the common portion and fluidly communicating with a corresponding outlet from the plurality of outlets.

In some embodiments, the non-circular cross-sectional shape is at least one of rectangular, triangular, and square.

In some embodiments, the non-circular cross-sectional shape is a teardrop shape.

In some embodiments, the non-circular cross-sectional shape includes a rectangular portion and a triangular portion disposed adjacent to the rectangular portion.

In some embodiments, the body further includes an inlet flange disposed around the inlet of at least one channel from the plurality of channels. The inlet flange defines a plurality of apertures extending at least partially therethrough. The inlet flange may be used for coupling one or more fluid fittings or connectors to the body.

In some embodiments, the body includes one or more ribs extending from the inlet to the inlet flange. The ribs may have a strengthening function.

In some embodiments, the body includes a stiffening member disposed at least partially around a perimeter of the body. The stiffening member extends substantially along the third axis.

In some embodiments, the passages of at least two adjacent channels from the plurality of channels are spaced apart from each other along at least one of the first axis, the second axis, and the third axis.

In some embodiments, the passage of at least one channel from the plurality of channels is at least partially curved around the passage of another channel from the plurality of channels. Such an arrangement may allow optimal utilization of space within the body.

In some embodiments, the passages of at least two channels from the plurality of channels have different non-circular cross-sectional shapes.

In some embodiments, at least a portion of the passage of at least one channel from the plurality of channels is inclined obliquely relative to at least one of the first, second, and third planes.

As noted elsewhere herein, the present disclosure may relate to the gas turbine engine. Such a gas turbine engine may comprise an engine core including a turbine, a combustor, a compressor, and a core shaft connecting the turbine to the compressor. Such a gas turbine engine may include a fan (having fan blades) located upstream of the engine core.

DETAILED DESCRIPTION

FIG.1shows an exemplary gas turbine engine10having a principal rotational axis X-X1. The principal rotational axis X-X1 coincides with a longitudinal centre line101of the gas turbine engine10.

In the following disclosure, the following definitions are adopted. The terms “upstream” and “downstream” are considered to be relative to an air flow through the gas turbine engine10. The terms “axial” and “axially” are considered to relate to the direction of the principal rotational axis X-X1 of the gas turbine engine10.

The gas turbine engine10includes, in axial flow series, an intake11, a fan12, an intermediate pressure compressor13, a high-pressure compressor14, a combustion equipment15, a high-pressure turbine16, an intermediate pressure turbine17, a low-pressure turbine18, and an engine core exhaust nozzle19. A nacelle21generally surrounds the gas turbine engine10and defines the intake11, a bypass duct22, and a bypass exhaust nozzle23. The gas turbine engine10also includes a tube gallery200(shown inFIGS.2,3, and4) to transfer one or more fluids between one or more components100,102(shown inFIG.2) associated with the gas turbine engine10.

During operation, air entering the intake11is accelerated by the fan12to produce two air flows: a first air flow A into the intermediate pressure compressor13and a second air flow B which passes through the bypass duct22to provide propulsive thrust. The intermediate pressure compressor13compresses the first air flow A directed into it before delivering that air to the high-pressure compressor14where further compression takes place.

In some embodiments, the gas turbine engine10may be used in an aircraft (not shown). In some embodiments, the gas turbine engine10may be an ultrahigh bypass ratio (UHBPR) engine. It should be noted that the gas turbine engine10may include any other application, without limiting the scope of the present disclosure.

FIG.2shows a schematic view of the gas turbine engine10including the tube gallery200. As illustrated inFIG.2, the tube gallery200is disposed between the first component100and the second component102. In some examples, the tube gallery200may be disposed adjacent to an accessory gearbox (not shown) of the gas turbine engine10. Further, the first and second components100,102may include any component associated with the gas turbine engine10between which fluid communication needs to be established. In some examples, one of the first and second components100,102may embody a tank that stores fluids. In various embodiments, the tube gallery200may be used for transferring cooling fluids such as a coolants or air, fuels, lubrication fluids, hydraulic fluids, and the like, without any limitations.

The tube gallery200of the present disclosure may be manufactured using a casting technique, a moulding technique, an additive layer manufacturing technique such as a three-dimensional printing technique, and the like. Further, the tube gallery200may be manufactured using materials such as metals, plastics, resins, carbon fibres, or combinations thereof. It should be noted that the tube gallery200may be manufactured using any other manufacturing technique and/or material, without limiting the scope of the present disclosure.

FIG.3shows a front perspective view of the tube gallery200. The tube gallery200includes a body202formed as a single integral component. The body202is generally crescent in shape. However, the body202of the tube gallery200may include any other shape, as per application requirements. In various embodiments, the shape of the tube gallery200may be governed by a geometry of the first and second components100,102(seeFIG.2) and/or space between the first and second components100,102.

Further, the body202defines mutually orthogonal first, second, and third axes A1, A2, A3. A length L1 of the body202is defined along the first axis A1. Further, a width W1 of the body202is defined along the second axis A2. Moreover, a height H1 of the body202is defined along the third axis A3. It should be noted that the length L1, the width W1, and the height H1 may vary based on dimensions of the first and second components100,102, space between the first and second components100,102, and the like. Further, the first and second axes A1, A2 define a first plane P1. Moreover, the second and third axes A2, A3 define a second plane P2 orthogonal to the first plane P1. Additionally, the first and third axes A1, A3 define a third plane P3 orthogonal to each of the first and second planes P1, P2.

In the illustrated embodiment ofFIG.3, the body202includes an external surface204. The external surface204includes an upper surface206, a lower surface208(as shown inFIG.6) opposite to the upper surface206, and a side surface210extending between the upper surface206and the lower surface208. In the illustrated embodiment ofFIG.3, the upper surface206and the lower surface208substantially extend along the first and second axes A1, A2. In the illustrated embodiment ofFIG.3, the side surface210substantially extends along the third axis A3.

In the illustrated embodiment ofFIG.3, each of the upper surface206and the side surface210define a substantially non-planar profile whereas the lower surface208defines a substantially planar profile. The upper surface206, the lower surface208, and the side surface210may include various curved portions, planar portions, protrusions, openings (such as holes, apertures, or cavities), grooves, or a combination thereof. The body202also includes one or more mounting brackets212to mount the tube gallery200between the first component100(seeFIG.2) and the second component102(seeFIG.2). In the illustrated embodiment ofFIG.3, the body202includes two mounting brackets212disposed at either ends of the body202. In other embodiments, the body202may include any number of the mounting brackets212or other mounting features, without limiting the scope of the present disclosure. The mounting brackets212may include one or more holes214to receive mechanical fasteners (not shown) for mounting of the tube gallery200. In the illustrated embodiment ofFIG.3, each mounting bracket212includes two holes214that are in alignment with each other with respect to the second and third axes A2, A3.

In the illustrated embodiment ofFIG.3, the body202includes a stiffening member216disposed at least partially around a perimeter226of the body202. The stiffening member216may extend substantially along the third axis A3. The stiffening member216is embodied as a generally curved plate. In the illustrated embodiment ofFIG.3, the body202includes two stiffening members216extending along the perimeter226of the body202between the two mounting brackets212. In some examples, the body202may include a single stiffening member extending between the two mounting brackets212. In various embodiments, the body202may include any number of the stiffening members216, as per application requirements. The stiffening members216may improve strength, stiffness, and form of the tube gallery200. Further, the stiffening members216may support loads exerted on the tube gallery200by one or more components of the gas turbine engine10.

The body202further includes a plurality of channels218defined in the body202. As illustrated inFIGS.4and5, each channel218includes an inlet220disposed on the external surface204(seeFIG.4), an outlet222spaced apart from the inlet220and disposed on the external surface204, and a passage224extending between and fluidly communicating the inlet220to the outlet222. The inlet218and the outlet222may be spaced apart from each other along any one of the first, second, and third axes A1, A2, A3 (seeFIG.3). Moreover, each passage224defines a passage wall225(shown inFIGS.3and4). In some examples, the passage wall225may form a portion of the upper surface206(seeFIG.3), the lower surface208, or the side surface210based on a positioning of the passage224.

Further, the inlet220receives fluids and directs the fluids towards the passage224. The inlets220of the plurality of channels218are spaced apart from each other. The inlets220may be spaced apart from each other along the first and second axes A1, A2 (as illustrated inFIG.3). In other embodiments, the inlets220may be spaced apart from each other along the third axis A3. Further, the inlet220of at least one channel218from the plurality of channels218may have a circular cross-sectional shape or a non-circular cross-sectional shape. The inlets220illustrated inFIG.3have a circular cross-sectional shape. The inlet220may extend along a length L2 (shown inFIG.7). Further, the inlet220having the circular cross-sectional shape is in fluid communication with the passage224having a non-circular cross-sectional shape268(as illustrated inFIG.7). Moreover, the inlet220may have the non-circular cross-sectional shape if the inlet220seals with a face seal. In some examples, the shape of the inlets220may correspond to the non-circular cross-sectional shape268of the passage224.

As shown inFIG.6, the outlet222receives the fluid from the passage224(seeFIGS.4and5) and directs the fluid to the component100or102(seeFIG.2) disposed adjacent to the tube gallery200. As shown inFIG.6, the outlets222of the plurality of channels218are spaced apart from each other. In the illustrated embodiment ofFIG.6, the outlets222are spaced apart from each other along the first and second axes A1, A2. In other embodiments, the outlets222may be spaced apart from each other along the third axis A3. Further, the outlet222of at least one channel218from the plurality of channels218may have a circular cross-sectional shape or a non-circular cross-sectional shape. In illustrated embodiment ofFIG.6, the outlets222have a circular cross-sectional shape. The outlet222may extend along a length L3 (shown inFIG.9). Further, the outlet222having the circular cross-sectional shape is in fluid communication with the passage224having the non-circular cross-sectional shape268(as illustrated inFIG.9). Moreover, the outlet222may have the non-circular cross-sectional shape if the outlet222seals with a face seal. In some examples, the shape of the outlets222may correspond to the non-circular cross-sectional shape268of the passage224.

Referring toFIGS.3,6, and7, at least one of the inlet220(seeFIGS.3and7) and the outlet222(seeFIG.6) of at least one channel218from the plurality of channels218may be disposed on the upper surface206. Some of the inlets220that are disposed on the upper surface206are illustrated inFIG.3. In another exemplary embodiment, the outlets222may be disposed on the upper surface206, without any limitations. Further, at least one of the inlet220and the outlet222of at least one channel218from the plurality of channels218may be disposed on the lower surface208. For example, as illustrated inFIG.6, the outlets222may be disposed on the lower surface208. In another example, as illustrated inFIG.7, the inlets220may be disposed on the lower surface208.

Referring now toFIGS.8and9, at least one of the inlet220(seeFIG.8) and the outlet222(seeFIG.9) of at least one channel218from the plurality of channels218may be disposed on the side surface210. For example, the inlet220may be disposed on the side surface210as illustrated inFIG.8. In another example, the outlet222may be disposed on the side surface210as illustrated inFIG.9. It should be noted that a position of the inlets220and a position of the outlets222may vary based on positioning of the first and second components100,102(seeFIG.2), space constraints, a location from which the fluid is being received within the inlets220, a location to which the fluid needs to be delivered by the outlets222, and the like.

Referring now toFIG.10, the body202further includes an inlet flange230,232disposed around the inlet220of at least one channel218from the plurality of channels218.FIG.10illustrates two different designs for the inlet flange230,232. The inlet flanges230,232may align with the inlet220of the channels218for introduction of fluids within the passages224(seeFIGS.4and5) of the channels218. The inlet flange230,232may also allow coupling of the inlet220of the channel218with outer fittings (not shown) of the components100,102(seeFIG.2) to which the tube gallery200is coupled. The inlet flange230,232may define a plurality of apertures234extending at least partially therethrough. In some embodiments, the apertures134may be embodied as through-apertures. The apertures234may be disposed circumferentially around a rim236of the inlet flange230,232. Further, the inlet flange230,232and the outer fitting of the component100,102may be coupled using mechanical fasteners (not shown), such as bolts, screws, and the like. The body202may include one or more ribs238extending from the inlet220to the inlet flange230. More particularly, in the illustrated embodiment ofFIG.10, the flanges230include three ribs238extending from the inlet220to the inlet flange230. The ribs238may provide strength and rigidity to the inlet flange230. In some embodiments, the ribs238may be an integral part of the inlet flange230. In another embodiment, the inlet flange232may also include ribs (similar to the ribs238). In other embodiments, the outlets222may include one or more outlet flanges similar to the inlet flanges230,232.

Referring now toFIGS.3,7, and8, at least one channel218from the plurality of channels218may include an inlet boss240including the inlet220extending to the passage224(seeFIGS.4and5). The inlet boss240may be integral with the body202. The inlet boss240may be defined around the inlet220to allow coupling of one of more fittings1102,1104,1106,1108,1110,1114(shown inFIGS.11A to11F) with the body202. The inlet boss240may define a mounting surface242(seeFIGS.3and8). The mounting surface242may define one or more first apertures244(seeFIGS.3and8) that may align with through-holes1116,1118,1120,1122(shown inFIGS.11A to11D) in the corresponding fitting1102,1104,1106,1108for coupling of the corresponding fitting1102,1104,1106,1108with the inlet boss240. Further, the mounting surface242may have a circular cross-sectional shape, a triangular shape, a rectangular shape, an elliptical shape, and the like. In some examples, the mounting surface242may be flush with the upper surface206, the lower surface208(seeFIG.6), or the side surface210. As shown inFIG.8, the mounting surface242is flush with the side surface210. In other examples, the mounting surface242may be raised (as shown inFIG.3) with respect to other portions of the body202. Further, the inlet boss240may define a number of threads that may allow coupling of the fitting1102,1104,1106,1108,1110,1114with the inlet boss240.

In some embodiments, the inlet boss240may be disposed on the lower surface208as the inlet220of the channel218is disposed on the lower surface208(as illustrated inFIG.7). In other embodiments, the inlet boss240may be disposed on the upper surface206as the inlet220of the channel218is disposed on the upper surface206(as illustrated inFIG.3). In yet another embodiment, the inlet boss240may be disposed on the side surface210as the inlet220of the channel218is disposed on the side surface210(as illustrated inFIG.8).

Further, the inlet boss240may be inclined to or parallel to the passage224of the at least one channel218. More particularly, as the passages224generally extend along the first, second, or third planes P1, P2, P3 and the inlet boss240may be coupled to the upper surface206, the lower surface208, or the side surface210, the inlet boss240may be disposed such that inlet boss240may be inclined to or parallel to the passage224. In some embodiments, the inlet boss240may be inclined to the passage224such that the inlet boss240is disposed at an angle of approximately 90 degrees relative to the passage224(as illustrated inFIG.7). In various embodiments, one or more dimensions of the inlet boss240may be determined based on allowable dimensions of the body202, type of the fittings1102,1104,1106,1108,1110,1114, and the like. In some examples, the inlet boss240may allow coupling of one of more bolted-on units (not shown) with the body202. For example, the bolted-on units may embody the components100,102(seeFIG.2), without any limitations.

Referring now toFIGS.6and9, at least one channel218from the plurality of channels218may include an outlet boss248including the outlet222extending to the passage224(seeFIG.9). The outlet boss248may be integral with the body202. The outlet boss248may be defined around the outlet222to allow coupling of one of more bolted-on units (not shown) with the body202. For example, the bolted-on units may embody the components100,102(seeFIG.2), without any limitations. The outlet boss248may define a mounting surface250(shown inFIG.6). The mounting surface250may include one or more second apertures252(shown inFIG.6) that align with through-holes (not shown) in a corresponding bolted-on unit for coupling of the corresponding bolted-on unit with the outlet boss248. The mounting surface250may have a circular cross-sectional shape, a triangular shape, a rectangular shape, an elliptical shape, and the like. In some examples, the mounting surface250may be flush with the upper surface206, the lower surface208, or the side surface210. In other examples, the mounting surface250may be raised with respect to other portions of the body202. Further, in some examples, the outlet boss248may define a number of threads that may allow coupling of screw-type units or fittings with the outlet boss248.

In some embodiments, the outlet boss248may be disposed on the lower surface208when the outlet222of the channel218is disposed on the lower surface208(as illustrated inFIG.6). In other embodiments, the outlet boss248may be disposed on the upper surface206when the outlet222of the channel218is disposed on the upper surface206. In yet another embodiment, the outlet boss248may be disposed on the side surface210when the outlet222of the channel218is disposed on the side surface210(as illustrated inFIG.9).

Further, the outlet boss248may be inclined to or parallel to the passage224of the at least one channel218. More particularly, as the passages224generally extend along the first, second, or third planes P1, P2, P3, and the outlet boss248may be coupled to the upper surface206, the lower surface208, or the side surface210, the outlet boss248may be disposed such that the outlet boss248may be inclined to or parallel to the passage224. For example, the outlet boss248is parallel to the passage224inFIG.9. In some examples, the outlet boss248may be inclined to the passage224such that the outlet boss248is disposed at an angle of approximately 90 degrees relative to the passage224. In various embodiments, one or more dimensions of the outlet boss248may be determined based on allowable dimensions of the body202, type of the bolted-on units, and the like. It should be noted that the fittings1102,1104,1106,1108,1110,1114(seeFIGS.11A to11F) as well as the bolted-on units may allow ingress and exit of fluids from the tube gallery200depending on their positioning. Accordingly, in an embodiment, the fittings1102,1104,1106,1108,1110,1114may be disposed at the inlet220(seeFIG.3) and the bolted-on units may be disposed at the outlet222. Alternatively, it may be contemplated that the fittings1102,1104,1106,1108,1110,1114may be disposed at the outlet222and the bolted-on units may be disposed at the inlet220.

FIGS.11A to11Fillustrate perspective views of different fittings1102,1104,1106,1108,1110,1114that can be coupled to the inlet boss240(seeFIGS.3,7, and8). Specifically,FIGS.11A to11Ddescribe bolted-type fittings andFIGS.11E and11Fdescribe screw-type fittings. In some examples, the fittings1102,1104,1106,1108,1110,1114can be coupled to the outlet boss248(seeFIGS.6and9), without any limitations. A shape and a size of the fittings1102,1104,1106,1108,1110,1114may be selected such that it corresponds to a shape and a size of a corresponding inlet boss240. It should be noted that sealing components, such as O-rings, beam seals, gaskets, and the like may be disposed between the fittings1102,1104,1106,1108,1110,1114and the inlet boss240for a leak proof joint.

FIG.11Aillustrates the exemplary fitting1102embodied as a bolted fitting. As illustrated inFIG.11A, a first portion1124of the fitting1102defines a generally triangular shaped structure. The first portion1124of the fitting1102defines three through-holes1116to receive the mechanical fasteners for coupling the fitting1102with the inlet boss240(seeFIG.3). The first portion1124of the fitting1102may define a cross-section similar to the cross-section shape of the inlet boss240. Further, a second portion1126of the fitting1102extends vertically from the first portion1124such that the first portion1124and the second portion1126are in alignment with each other. The first and second portions1124,1126define a circular cross-section herein. Alternatively, the first and second portions1124,1126may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like.

FIG.11Billustrates the exemplary fitting1104that is embodied as an elbow type of bolted fitting. As illustrated inFIG.11B, a first portion1128of the fitting1104defines a generally triangular shaped structure. The first portion1128of the fitting1104defines three through-holes1118to receive the mechanical fasteners for coupling the fitting1104with the inlet boss240(seeFIG.3). The first portion1128of the fitting1104may define a cross-section similar to a cross-section of the inlet boss240. Further, a second portion1130of the fitting1104extends from the first portion1128. The first and second portions1128,1130are substantially perpendicular to each other. The first and second portions1128,1130define a circular cross-section herein. Alternatively, the first and second portions1128,1130may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like.

FIG.11Cillustrates the exemplary fitting1106that is embodied as a bolted fitting with spigot. As illustrated inFIG.11C, a first portion1132of the fitting1106defines a generally triangular shaped structure. Further, the fitting1106includes a spigot1136coupled to the first portion1132. The first portion1132of the fitting1106defines three through-holes1120to receive the mechanical fasteners for coupling the fitting1106with the inlet boss240(seeFIG.3). The first portion1132of the fitting1106may define a cross-section similar to a cross-section of the inlet boss240. Further, a second portion1134of the fitting1106extends vertically from the first portion1132such that the spigot1136, the first portion1132, and the second portion1134are in alignment with each other. The first and second portions1132,1134and the spigot1136define a circular cross-section herein. Alternatively, the first and second portions1132,1134and the spigot1136may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like.

FIG.11Dillustrates the exemplary fitting1108that is embodied as a bolted elbow fitting with spigot. As illustrated inFIG.11D, a first portion1138of the fitting1108defines a generally triangular shaped structure. Further, the fitting1108includes a spigot1142coupled to the first portion1138. The first portion1138of the fitting1108defines three through-holes1122to receive the mechanical fasteners for coupling the fitting1108with the inlet boss240(seeFIG.3). The first portion1138of the fitting1108may define a cross-section similar to a cross-section of the inlet boss240. Further, a second portion1140projects from the first portion1138. The first and second portions1138,1140are substantially perpendicular to each other. The first and second portions1138,1140and the spigot1142define a circular cross-section herein. Alternatively, the first and second portions1138,1140and the spigot1142may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like.

FIG.11Eillustrates the exemplary fitting1110that is embodied as a double ended union fitting. As illustrated inFIG.11E, a first portion1144of the fitting1110defines a cylindrical shaped structure with a hexagonal nut1148. In other examples, the hexagonal nut1148may be replaced by a cylindrical nut. The first portion1144of the fitting1110may define a cross-section similar to a cross-section of the inlet boss240(seeFIG.3). The first portion1144of the fitting1110may define an engagement feature1150. The engagement feature1150may allow coupling of the fitting1110with the inlet boss240. Further, the hexagonal nut1148of the first portion1144may assist operators by providing a gripping surface during engagement and disengagement of the fitting1110with the inlet boss240. Moreover, a second portion1146of the fitting1110is also embodied as a cylindrical shaped member that is in alignment with the first portion1144. The first and second portions1144,1146define a circular cross-section herein. Alternatively, the first and second portions1144,1146may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like.

FIG.11Fillustrates the exemplary fitting1114that is embodied as an end stop fitting. The fitting1114may be used to close a particular inlet or outlet220,222(seeFIGS.3and6) to prevent fluid transfer therethrough. As illustrated inFIG.11F, the fitting1114includes a hexagonal nut1160and a cylindrical portion1162extending from the hexagonal nut1160that engages with the inlet boss240(seeFIG.3). The cylindrical portion1162of the fitting1114may define a cross-section similar to a cross-section of the inlet boss240. The cylindrical portion1162defines a circular cross-section herein. Alternatively, the cylindrical portion1162may define any other cross-section such as circular, square, rectangular, triangular, hexagonal, and the like. It should be noted that the fittings1102,1104,1106,1108,1110,1114described in relation toFIGS.11A to11Fherein are exemplary in nature, and any other type of fitting may be coupled to the inlet boss240, without any limitations.

FIGS.12and13illustrate different types of passages1202,1204,1206,1302. The passage1202,1204,1206,1302of at least one channel218from the plurality of channels218may be at least one of straight, curved, or spiral. The tube gallery200may include the passages1202,1204,1206,1302having different designs to optimally arrange the channels218for purposes of weight reduction, reducing material usage, and accommodation of the tube gallery200in compact spaces.

FIG.12shows the tube gallery200having the passage1202embodied as a straight passage and the passages1204embodied as curved passages. It should be noted that the passages1204may be designed in such a way that the passages1204may eliminate any sharp bends, thereby preventing pressure losses. Further, the passage1206includes a combination of a straight portion and a curved portion.

FIG.13shows a perspective view of the passage1302embodied as a spiral passage. In the illustrated embodiment ofFIG.13, the passage1302includes a single loop. However, the passage1302may include more than one loop. The passage1302having such as spiral design may be accommodated in compact horizontal spaces. Further, the loop of the passage1302may be designed in such a way that the loop eliminates any sharp bends, thereby preventing pressure losses.

Referring now toFIG.14, the passages1402,1404of at least two adjacent channels218from the plurality of channels218may be spaced apart from each other along at least one of the first axis A1, the second axis A2, and the third axis A3. In the illustrated embodiment ofFIG.14, each of the passages1402are spaced apart from each other along the second axis A2. Further, the passages1404are spaced apart from the passages1402along the third axis A3. It should be further noted that some passages1402,1404may also be spaced apart from each other along the first axis A1. Further, a distance between two adjacent passages1402,1404may not be uniform along the first axis A1, the second axis A2, or the third axis A3. Alternatively, the distance between two adjacent passages1402,1404may be uniform along the first axis A1, the second axis A2, or the third axis A3.

Further, at least a portion of the passage1402,1404of at least one channel218from the plurality of channels218may be inclined obliquely relative to at least one of the first, second, and third planes P1, P2, P3. More particularly, disposition of the inlets220and/or the outlets222(seeFIG.6) on the upper surface206, the lower surface208, or the side surface210may require some of the passages1402,1404to be disposed in an inclined manner. Further, the passages1402,1404may also be inclined to accommodate various features of the body202, such as the inlet and/or outlet boss240,248(seeFIGS.3and6). In some examples, only some portions of the passage1402,1404instead of the entire passage1402,1404may be inclined obliquely relative to the first plane P1, the second plane P2, and/or the third plane P3. In some situations, when the inlet220and the outlet222are disposed in different planes P1, P2, P3, it may be contemplated that the entire passage1402,1404is inclined obliquely relative to the first plane P1, the second plane P2, or the third plane P3.

Further, the passage1402,1404of each channel218from the plurality of channels218has the non-circular cross-sectional shape268in one of the first, second, and third planes P1, P2, P3. As illustrated inFIG.15A, the non-circular cross-sectional shape268includes a rectangular portion272and a triangular portion270disposed adjacent to the rectangular portion272. Specifically, the triangular portion270extends vertically from the rectangular portion272along a first direction D3. Further, the non-circular cross-sectional shape268has a first maximum dimension D1 along the first direction D3 and a second maximum dimension D2 along a second direction D4 orthogonal to the first direction D3. In the illustrated embodiment ofFIG.15A, the first maximum dimension D1 is greater than the second maximum dimension D2 by a factor of at least 1.2. In various embodiments, the factor may correspond to at least 1.5, at least 2, at least 3, at least 4, at least 5, and the like, without any limitations. Further, the first maximum dimension D1 and the second maximum dimension D2 may correspond to a height and a width, respectively, of the non-circular cross-sectional shape268.

It should be noted that the first and second maximum dimensions D1, D2 may vary for different passages1402,1404(seeFIG.14). Further, the non-circular cross-sectional shape268may allow the passages1402,1404to have a higher value of the first maximum dimension D1. Thus, it may be possible to reduce a value of the second maximum dimension D2 without reducing a cross-sectional area of the passages1402,1404or an amount of fluid flow through the passages1402,1404. In such examples, it may be possible to group the passages1402,1404proximate to each other and eliminate dead space between the passages1402,1404.

In various embodiments, the first maximum dimension D1 may approximately lie between 5 millimetres (mm) and 50 mm. Further, in various embodiments, the second maximum dimension D2 may approximately lie between 2 mm and 40 mm. In some embodiments, the non-circular cross-sectional shape268may include a high aspect ratio. Further, the first maximum dimension D1 and the second maximum dimension D2 of the passages1402,1404may be different from each other or similar to each other, as per application requirements.

It should be noted that the first maximum dimension D1 of the passages1402,1404may govern the height H1 (seeFIG.14) of the tube gallery200. In some embodiments, the passage1402,1404with a highest value of the first maximum dimension D1 may govern the height H1 of the tube gallery200. In some instances, the first maximum dimension D1 of any one passage1402,1404or a summation of the first maximum dimension D1 of multiple passages1402,1404that are stacked above each other may be substantially similar to the height H1 of the tube gallery200. Further, as the passages1402,1404include the non-circular cross-sectional shape268having high aspect ratios, the passages1402,1404may also act as stiffening structures to provide structural strength to the tube gallery200.

FIGS.15B to15Iillustrate schematic views of different exemplary non-circular cross-sectional shapes1502,1504,1506,1508,1510,1512,1514,1516that may be associated with the passages224,1402,1404(seeFIGS.4and14) of the tube gallery200(seeFIGS.3and14). Each non-circular cross-sectional shape1502,1504,1506,1508,1510,1512,1514,1516defines the first maximum dimension D1 and the second maximum dimension D2.

As illustrated inFIG.15B, the non-circular cross-sectional shape1502is a teardrop shape. The non-circular cross-sectional shape1502may include a taper angle T1 that is less than 30 degrees. In some embodiments, when the taper angle T1 is 20 degrees, weight reduction of the tube gallery200may be maximized.

FIG.15Cillustrates another exemplary non-circular cross-sectional shape1504embodied as a teardrop shape. In this embodiment, the non-circular cross-sectional shape1504includes a taper angle T2 of 30 degrees.FIG.15Dillustrates yet another exemplary non-circular cross-sectional shape1506embodied as a teardrop shape. The non-circular cross-sectional shape1506of this embodiment includes an elongated teardrop profile.

It should be noted that the non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516may include any other shape having a high aspect ratio. In other embodiments, the non-circular cross-sectional shape268,1502,1504,1506,1508,1510,1512,1514,1516may include any other shape such as a trapezoidal shape, a pentagonal shape, an oval shape, a rhombus shape, and the like, without any limitations. It should be noted that the non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516are applicable to all passages224,1202,1204,1206,1302,1402,1404(seeFIGS.4,12,13,14) associated with the tube gallery200such as the passages224,1202,1204,1206,1302, without any limitations.

Further, the passages224,1202,1204,1206,1302,1402,1404of at least two channels218from the plurality of channels218may have different non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516. For example, some passages224,1202,1204,1206,1302,1402,1404may have the non-circular cross-sectional shape268as illustrated inFIG.15A, and some passages224,1202,1204,1206,1302,1402,1404may have the non-circular cross-sectional shapes1502,1504,1506,1508,1510,1512,1514,1516as illustrated inFIGS.15B to15I. In other embodiments, all the passages224,1202,1204,1206,1302,1402,1404may have the same non-circular cross-sectional shape268,1502,1504,1506,1508,1510,1512,1514,1516.

FIGS.16A to16Dillustrate different stacking arrangements1602,1610,1618,1628.FIG.16Ashows the exemplary first stacking arrangement1602of passages1604,1606,1608. In the first stacking arrangement1602, the passages1604,1606,1608have the non-circular cross-sectional shape268as described with reference toFIG.15A. Further, the passages1606,1608are arranged besides each other. Moreover, the passage1602is stacked above the passage1604.

FIG.16Bshows the exemplary second stacking arrangement1610of passages1612,1614,1616. In the second stacking arrangement286, the passage1612has the non-circular cross-sectional shape1514as described with reference toFIG.15Hand the passages1614,1616have the non-circular cross-sectional shape268as described with reference toFIG.15A. Further, the second stacking arrangement1610is embodied as a honeycomb stacking arrangement. The passages1614,1616are arranged besides each other. Moreover, the passage1612is stacked above the passages1614,1616. The second stacking arrangement1610may provide a compact stacking arrangement as multiple passages1612,1614,1616can be arranged in a compact space.

FIG.16Cshows the exemplary third stacking arrangement1618of passages1620,1622,1624,1626. In the third stacking arrangement1618, the passages1620,1622have the non-circular cross-sectional shape1516as described with reference toFIG.15Iwhereas the passages1624,1626have the non-circular cross-sectional shape268as described with reference toFIG.15A. Further, the passages1624,1626are arranged besides each other. Moreover, the passages1620,1622are stacked above the passages1624,1626, respectively.

FIG.16Dshows the exemplary fourth stacking arrangement1628of passages1630,1632,1634. In the fourth stacking arrangement1628, the passages1630,1632,1634have the non-circular cross-sectional shape268as described with reference toFIG.15A. Further, the passages1632,1634are arranged besides each other. Moreover, the passage1630is stacked above the passage1632. The fourth stacking arrangement1628is similar to the first stacking arrangement1602, however, in the fourth stacking arrangement1628, a portion adjacent to the passage1630is reprofiled to remove excess material to further reduce the weight of the tube gallery200.

The stacking arrangements1602,1610,1618,1628described herein are exemplary in nature and the tube gallery200(seeFIG.3) may include any other stacking arrangement, without any limitations. Further, the tube gallery200may include a combination of different types of stacking arrangements, such as a combination of one or more of the stacking arrangements1602,1610,1618,1628.

Referring toFIG.17, the tube gallery200includes a plurality of channels1702and a plurality of channels1704. Each channel1702includes a passage1706and each second channel1704includes a passage1708. Further, the passage1706of at least one channel1702from the plurality of channels1702is at least partially curved around the passage1708of another channel1704from the plurality of channels1704. As illustrated inFIG.17, the passage1708of each channel1704is embodied as a straight passage. Further, the passage1706of the channels1702are curved around the passages1708of the channels1704. Moreover, in the illustrated embodiment ofFIG.17, the passages1706of the channels1702have different dimensions. Alternatively, the passages1706of the channels1702may have same dimensions.

As shown inFIG.18, the passages1706of the set of channels1702may have a number of straight portions1710and a number of raised portions1712. The raised portions1712are provided to allow routing of the passages1706of the channels1702over the passages1708of the channels1704. Further, the passages1708of the channels1704may have different dimensions. Alternatively, the passages1708of the channels1704may have same dimensions.

In various embodiments, the passages1706,1708may also curve around various features defined in the body202(seeFIG.3). For example, the passages1706,1708may curve around various apertures, such as the first apertures244(seeFIG.8) of the inlet boss240(seeFIG.8), the second apertures252(seeFIG.6) of the outlet boss248(seeFIG.6), and the like.

Referring toFIG.19, the channels218may further include one or more transfer reservoirs1904. As illustrated inFIG.19, the transfer reservoir1904is in fluid communication with a passage1902of the channel218. In some examples, the transfer reservoir1904may be provided in the body202due to space restrictions presented by the inlet and/or outlet boss240,248(seeFIG.6), or when the inlet220and the outlet222are proximate to each other. In the illustrated embodiment ofFIG.19, the inlet220of the channel218is disposed on the side surface210whereas the outlet222of the channel218is disposed on the lower surface208(seeFIG.6) and is proximate to the inlet220. In such examples, due to space restrictions as well as dimensional and orientation mismatches between the inlet220, the passage1902, and/or the outlet222, the transfer reservoir1904may be defined in the tube gallery200.

Further, referring toFIG.20, in some embodiments, one or more channels218may include a single inlet2002and multiple outlets2004,2006.FIG.20illustrates the multiple outlets2004,2006disposed in a parallel arrangement. In the illustrated embodiment ofFIG.20, at least one channel218from the plurality of channels218includes the plurality of outlets2004,2006. Further, a passage2008of the at least one channel218includes a common portion2010fluidly communicating with the inlet2002and a plurality of branched portions2012,2014branching from the common portion2010and fluidly communicating with a corresponding outlet2004,2006from the plurality of outlets2004,2006. The common portion2010is defined proximate the inlet2002. The channel218illustrated inFIG.20includes two outlets2004,2006and two branched portions2012,2014. The branched portion2012is in fluid communication with the common portion2010at one end and the outlet2004at another end. Further, the branched portion2014is in fluid communication with the common portion2010at one end and the outlet2006at another end. Although the channel218includes two outlets2004,2006and two branched portions2012,2014, it should be noted that the channel218may include any number of outlets and branched portions, as per application requirements.

FIG.21illustrates another exemplary arrangement wherein one or more channels218may include a single inlet2102and multiple outlets2104,2106. In the embodiment ofFIG.21, a passage2108of the channel218includes a common portion2110fluidly communicating with the inlet2102and a single branched portion2112that is in fluid communication with the common portion2110. Further, the common portion2110is defined proximate the inlet2102. The channel218illustrated inFIG.21includes two outlets2104,2106. Specifically, the channel218includes the outlet2104that is in direct fluid communication with the common portion2110whereas the outlet2106that is in fluid communication with the common portion2110via the branched portion2112. Although the channel218includes two outlets2104,2106and the single branched portion2112, it should be noted that the channel218may include any number of outlets and branched portions, as per application requirements.

Referring toFIGS.20and21, the channel218may include more than one inlet2002,2102. In another embodiment, the channel218may include more than one inlet2002,2102and more than two outlets2004,2006,2104,2106. It should be noted that the number of inlets2002,2102, the number of outlets2004,2006,2104,2106, and the arrangement of the inlets2002,2102, and the outlets2004,2006,2104,2106do not limit the scope of the present disclosure.

Referring now toFIGS.22A,22B, and22C, one or more passages2202,2204,2206of the tube gallery200may include a transition zone that allows variation in a first maximum dimension D1 of the passages2202,2204,2206. Specifically, the transition zones may allow variation in the first maximum dimension D1 for accommodation of sealing features, the bolted-on units, or the fittings1102,1104,1106,1108,1110,1114(seeFIGS.11A to11F). Further, such transition zones may eliminate a requirement of increasing the height H1 (seeFIG.3) of the tube gallery200for accommodating the sealing features or the fittings1102,1104,1106,1108,1110,1114. In other examples, the transition zones may additionally, or alternatively, allow variation in a second maximum dimension (not shown) of the passages2202,2204,2206for accommodation of the sealing features, the bolted-on units, or the fittings1102,1104,1106,1108,1110,1114.

FIGS.22A,22B, and22Cillustrate schematic views for the passages2202,2204,2206having the transition zones. As illustrated inFIG.22A, the first maximum dimension D1 of the passage2202is reduced based on provision of an angled lower wall2208. As illustrated inFIG.22B, the first maximum dimension D1 of the passage2204is reduced based on provision of an angled upper wall2210. As illustrated inFIG.22C, the first maximum dimension of the passage2206is reduced based on provision of an angled upper wall2212as well as an angled lower wall2214.

Conventional tube galleries associated with gas turbine engines may be manufactured by drilling one or more holes in a plate of the tube gallery to create one or more passages for allowing fluid transfer between a number of components of such gas turbine engines. Such tube galleries typically include straight passages having a circular cross section. Conventional tube galleries do not allow variation in space between adjacent passages for saving material and reducing weight of the tube galleries. In conventional methods of manufacturing the tube gallery, the drilling operation is performed through side surfaces of the tube gallery. However, the drilling operation through the side surface of the tube gallery may create a number of fluid stagnation zones that may cause undesirable fluid accumulation within the passages. The fluid stagnation zones may require blanking as they may not be functionally required. Conventional tube galleries of the gas turbine engine may also exhibit high pressure losses due to a geometry of the passages. Specifically, pressure losses may occur at sharp bends where the drilled passages intersect each other. Further, conventional tube galleries associated with gas turbine engines typically tend to be heavy as the passages of the tube gallery may not be optimally arranged and may not allow a flexibility for material removal from the plate of the tube gallery.

The present disclosure provides the tube gallery200for use with the gas turbine engine10. The passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206of the tube gallery200are arranged in a manner that may allow removal of material from the tube gallery200, thereby providing the tube gallery200that is lighter in weight than conventional tube galleries. For example, the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206may be arranged proximate to each other which may facilitate removal of excess material from the body202, thereby reducing the weight of the tube gallery200.

Further, the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206may include any non-circular cross-sectional shape268,1502,1504,1506,1508,1510,1512,1514,1516. In various embodiments, the non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516of the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206may be chosen based on space constraints, overall dimensions of the tube gallery200, a total number of the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206, and the like. Further, the non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516may be selected such that the tube gallery200may exhibit increased structural efficiency and rigidity. Furthermore, pressure losses in the tube gallery200may be minimized as the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206of the tube gallery200do not include any sharp bends.

Moreover, the tube gallery200may be manufactured using additive layer manufacturing techniques such as three-dimensional printing, or other manufacturing techniques such as moulding or casting. Using these techniques, it may be possible to define the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206having any non-circular cross-sectional shape (such as the non-circular cross-sectional shapes268,1502,1504,1506,1508,1510,1512,1514,1516). Further, such manufacturing techniques may allow arrangement of the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206proximate to each other. Moreover, such manufacturing techniques may also allow provision of the passages224,1202,1204,1206,1302,1402,1404,1604,1606,1608,1612,1614,1616,1620,1622,1624,1626,1630,1632,1634,1706,1708,1902,2008,2108,2202,2204,2206directly between the inlets220,2002,2102and the outlets222,2004,2006,2104,2106, thereby eliminating the fluid stagnation zones. Additionally, the teachings of the present disclosure may be applied to tube galleries that may be associated with structural brackets/rafts, or accessory gearbox casings/covers. Further, the tube gallery200may be built into engine casings for optimising fluid packaging.

It will be understood that the embodiments are not limited to the embodiments described above and various modifications and improvements can be made without departing from the concepts described herein. Except where mutually exclusive, any of the features may be employed separately or in combination with any other features and the disclosure extends to and includes all combinations and sub-combinations of one or more features described herein.