Piping support device and piping support method

Abstract

A piping support device and a piping support method are provided that can suppress the piping from resonating with the natural vibration of a combustor and can support the piping for a relatively long period of time. [Solution] A piping support device for supporting piping arranged inside the combustor of a gas turbine, one side of the piping fixed to another member, having a curved portion that curves in a direction intersecting the axial direction of the piping, and configured to allow a fluid that is cooler than the surrounding atmosphere to flow through the piping, comprises: a piping side connection portion connected to the outer surface of the piping; a wall side connection portion connected to the wall surface of a first member that has a wall surface facing the outer surface of the piping via a radial gap; and a connecting portion connecting the piping side connection portion and the wall side connection portion, the connecting portion having at least one longitudinal portion whose longitudinal direction extends in a direction intersecting the axial direction of the piping and in a direction away from the piping.

Description

[Technical Field]

[0001] The present disclosure relates to a piping support device and a piping support method for supporting piping arranged inside a combustor of a gas turbine. [Background technology]

[0002] Patent Document 1 discloses providing a curved portion in an oil introduction pipe in order to mitigate the effect of thermal expansion occurring between a main nozzle in a gas turbine combustor and an oil introduction pipe inserted into the main nozzle. The oil introduction pipe is cooled by the oil flowing inside during operation of the combustor. In contrast, the temperature of the main nozzle rises due to the air surrounding the main nozzle during operation of the combustor. This results in a difference in thermal expansion between the main nozzle and the oil introduction pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-188857 Summary of the Invention [Problem to be solved by the invention]

[0004] To prevent the oil inlet pipe from resonating with the main nozzle, it is possible to support the oil inlet pipe with a dynamic seal such as a gland packing to suppress radial displacement of the oil inlet pipe, but such dynamic seals are prone to deterioration over time due to long-term or repeated loads. If the dynamic seal deteriorates over a relatively short period of time, the vibration frequency of the oil inlet pipe will decrease, and there is a risk that the oil inlet pipe will resonate with the natural vibration of the combustor (e.g., the main nozzle).

[0005] In view of the above circumstances, at least one embodiment of the present disclosure aims to provide a piping support device and a piping support method that can suppress the piping from resonating with the natural vibration of the combustor and can support the piping for a relatively long period of time. [Means for solving the problem]

[0006] According to at least one embodiment of the present disclosure, a piping support device includes: A piping support device for supporting piping arranged inside a combustor of a gas turbine, comprising: The piping is configured such that one side of the piping is fixed to another member, and a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid having a temperature lower than that of a surrounding atmosphere of the piping flows through the piping, The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; and a connecting portion that connects the piping side connection portion and the wall side connection portion, the connecting portion having at least one longitudinal portion having a longitudinal direction that extends in a direction that intersects with the axial direction of the piping and in a direction that is away from the piping.

[0007] A method for supporting piping according to at least one embodiment of the present disclosure includes: A method for supporting piping arranged inside a combustor of a gas turbine by a piping support device, comprising: The piping is configured such that one side of the piping is fixed to another member, and a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid having a temperature lower than that of a surrounding atmosphere of the piping flows through the piping, The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; a connecting portion that connects the pipe-side connecting portion and the wall-side connecting portion, the connecting portion having at least one longitudinal portion that has a longitudinal direction that extends in a direction that intersects with the axial direction of the pipe and in a direction that is away from the pipe; The method for supporting the piping includes: a first connecting step of connecting the wall-side connecting portion of the piping support device to the wall surface of the first member; and a second connecting step of connecting the pipe-side connecting portion of the pipe support device to the outer surface of the pipe. [Effects of the Invention]

[0008] According to at least one embodiment of the present disclosure, a piping support device and a piping support method are provided that can suppress the piping from resonating with the natural vibration of the combustor and can support the piping for a relatively long period of time. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic configuration diagram of a gas turbine according to an embodiment of the present disclosure. [Figure 2] FIG. 1 is a schematic diagram illustrating a combustor and turbine inlet section of a gas turbine according to an embodiment of the present disclosure. [Figure 3] 1 is a schematic cross-sectional view taken along the axial direction of a combustor of a gas turbine equipped with a piping support device according to a first embodiment of the present disclosure. [Figure 4] 1 is a schematic perspective view of a piping support device according to a first embodiment of the present disclosure. [Figure 5] 1 is a schematic cross-sectional view taken along the axial direction of a combustor of a gas turbine equipped with a piping support device according to a comparative example. [Figure 6] 1 is a schematic view of a combustor of a gas turbine equipped with a support device according to some embodiments of the present disclosure, viewed from one axial side. FIG. [Figure 7] 1 is a schematic view of a combustor of a gas turbine equipped with a support device according to some embodiments of the present disclosure, viewed from one axial side. FIG. [Figure 8] 1 is a schematic cross-sectional view taken along the axial direction of a combustor of a gas turbine equipped with a modified example of a piping support device according to a first embodiment of the present disclosure. FIG. [Figure 9]1 is a schematic cross-sectional view showing a cross section perpendicular to the axial direction of a combustor of a gas turbine equipped with a support device according to some embodiments of the present disclosure. [Figure 10] 1 is a schematic cross-sectional view showing a cross section perpendicular to the axial direction of a combustor of a gas turbine equipped with a support device according to some embodiments of the present disclosure. [Figure 11] 6 is a schematic cross-sectional view taken along the axial direction of a combustor of a gas turbine equipped with a piping support device according to a second embodiment of the present disclosure. FIG. [Figure 12] FIG. 10 is a schematic perspective view of a piping support device according to a second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, several embodiments of the present disclosure will be described with reference to the accompanying drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of components described as embodiments or shown in the drawings are merely illustrative examples and are not intended to limit the scope of the present disclosure.

[0011] Fig. 1 is a schematic configuration diagram of a gas turbine 1 according to an embodiment of the present disclosure. Fig. 2 is a schematic diagram showing an inlet portion of a combustor 3 and a turbine 4 of the gas turbine 1 according to an embodiment of the present disclosure. A piping support device 5 according to some embodiments is for supporting piping 6 arranged inside the combustor 3 of the gas turbine 1.

[0012] (Gas Turbine) 1, the gas turbine 1 includes a compressor 2 for generating compressed air, a combustor 3 for generating combustion gas using the compressed air and fuel, and a turbine 4 configured to be rotationally driven by the combustion gas. In the case of a gas turbine 1 for power generation, a generator (not shown) is connected to the turbine 4.

[0013] The compressor 2 includes a plurality of stator vanes 21 fixed to the compressor casing 20 side, and a plurality of moving blades 22 implanted in the rotor 11 of the gas turbine 1 so as to be arranged alternately with respect to the stator vanes 21. Air taken in from an air intake 23 is sent to the compressor 2, and this air is compressed as it passes through the plurality of stator vanes 21 and the plurality of moving blades 22, becoming high-temperature, high-pressure compressed air.

[0014] The combustor 3 is supplied with fuel and compressed air generated by the compressor 2, and the fuel is combusted in the combustor 3 to generate combustion gas, which is the working fluid of the turbine 4. As shown in Fig. 1, the gas turbine 1 has a plurality of combustors 3 arranged in a casing 12 of the gas turbine 1 along the circumferential direction around a rotor 11.

[0015] The turbine 4 has a combustion gas passage 41 formed by a turbine casing 40, and includes a plurality of stator vanes 42 and rotor blades 43 provided in the combustion gas passage 41. The stator vanes 42 and rotor blades 43 of the turbine 4 are provided downstream of the combustor 3 with respect to the flow of combustion gas.

[0016] The stator vanes 42 are fixed to the turbine casing 40 side, and a plurality of the stator vanes 42 arranged along the circumferential direction of the rotor 11 constitute a stator vane row. The moving blades 43 are implanted in the rotor 11, and a plurality of the moving blades 43 arranged along the circumferential direction of the rotor 11 constitute a moving blade row. The stator vane rows and moving blade rows are arranged alternately in the axial direction of the rotor 11.

[0017] In the turbine 4, the combustion gas from the combustor 3 flows into a combustion gas passage 41 and passes through a plurality of stator vanes 42 and a plurality of rotor blades 43, thereby driving the rotor 11 to rotate about the axis O, which in turn drives a generator connected to the rotor 11 to generate electricity. After driving the turbine 4, the combustion gas is discharged to the outside via an exhaust chamber 44.

[0018] (Combustor) In a gas turbine 1 according to some embodiments, each of the plurality of combustors 3 (see FIG. 1 ) arranged in the circumferential direction around the rotor 11 includes a combustion liner (combustor liner) 32 provided in a combustor casing 31 defined by the casing 12, and a first combustion burner 33 and a plurality of second combustion burners 34 arranged to surround the first combustion burner 33, each of which is arranged in the combustion liner 32. That is, the combustion liner 32, the first combustion burner 33, and the second combustion burner 34 are housed in the casing 12.

[0019] The combustion liner (combustor liner) 32 has an inner liner 321 disposed around the first combustion burner 33 and the plurality of second combustion burners 34, and a transition piece 322 connected to the tip of the inner liner 321. The inner liner 321 and the transition piece 322 may be integrally formed.

[0020] The first combustion burner 33 is disposed along the direction in which the central axis C1 of the combustion liner 32 extends (i.e., the axial direction of the combustor 3), and has a first fuel nozzle 35 for injecting fuel. Fuel is supplied to the first fuel nozzle 35 via a first fuel port 36.

[0021] The second combustion burner 34 is disposed along the axial direction of the combustor 3, and has a second fuel nozzle 37 for injecting fuel. Fuel is supplied to the second fuel nozzle 37 through a second fuel port 38.

[0022] The combustor 3 further includes an outer casing 39 provided on the outer circumferential side of the inner casing 321 inside the casing 12. An air passage 390 is formed on the outer circumferential side of the inner casing 321 and on the inner circumferential side of the outer casing 39, through which compressed air flows.

[0023] Compressed air generated by the compressor 2 (see FIG. 1) is supplied into the combustor casing 31 through the casing inlet 311, and the compressed air flows from the combustor casing 31 into the air passage 390 as combustion air and into the burner tubes of each combustion burner 33, 34. In each burner tube, fuel injected from fuel nozzles 35, 37 is mixed with the compressed air (combustion air), and this mixture flows into the combustion tube 32, where it is ignited and combusted to generate combustion gas. The combustion gas generated by the combustion of fuel in the combustor 3 flows into the turbine 4.

[0024] The first combustion burner 33 may be a burner for generating a diffusion combustion flame, and the second combustion burner 34 may be a burner for burning a premixed air-fuel mixture to generate a premixed combustion flame. The combustor 3 may also include other components such as a bypass pipe (not shown) for bypassing the combustion gas.

[0025] (Plumbing) Fig. 3 is a schematic cross-sectional view taken along the axial direction of the combustor 3 of the gas turbine 1 equipped with the pipe support device 5 according to the first embodiment of the present disclosure. Fig. 4 is a schematic perspective view of the pipe support device 5 according to the first embodiment of the present disclosure. As shown in Fig. 3, one end 61 of the pipe 6 is fixed to another member 100 by welding or the like. The pipe 6 is configured so that a fluid with a temperature lower than that of the ambient atmosphere of the pipe 6 flows through it during operation of the combustor 3. For this reason, the pipe 6 thermally expands toward the other side of the pipe 6 during operation, and the other end 62 of the pipe 6 becomes separated from the one end 61.

[0026] The piping 6 has a curved portion 63 that is curved in a direction intersecting the axial direction of the piping 6. Here, the axial direction of the piping 6 means the extension direction (of the central axis C2) of the portion of the piping 6 other than the curved portion 63. In the illustrated embodiment, the axial direction of the piping 6 is a direction along the extension direction of the second fuel nozzle 37. In other words, the axial direction of the piping 6 is a direction parallel to the axial direction of the combustor 3 (the extension direction of the central axis C1).

[0027] 6 and 7, the curved portion 63 of the piping 6 extends in the circumferential direction of the combustor 3 and has a curved shape that is convex toward the outside or inside in the radial direction of the combustor 3. Note that the curved portion 63 of the piping 6 may have a curved shape that is curved along the circumferential direction of the combustor 3. Furthermore, the curved portion 63 of the piping 6 may have a curved shape that is continuous in the axial direction of the piping 6, and may have, for example, a spiral shape (coil shape) wound one or more times in the circumferential direction of the piping 6.

[0028] (Piping support device) As shown in Figures 3 and 4, the piping support device 5 comprises a piping side connection portion 7 connected to the outer surface 65 of the piping 6, a wall side connection portion 8 connected to the wall surface 201 of a first member 200 having a wall surface 201 facing the outer surface 65 of the piping 6 via a radial gap, and a connecting portion 9 connecting the piping side connection portion 7 and the wall side connection portion 8.

[0029] The pipe 6 is supported by the pipe support device 5 via a portion connected to the pipe-side connection portion 7 of the pipe 6. The portion of the pipe 6 connected to the pipe-side connection portion 7 is defined as the supported portion 64. The pipe-side connection portion 7 is connected to an outer surface 65 of the supported portion 64 of the pipe 6. In the embodiment shown in FIGS. 3 and 4, the pipe-side connection portion 7 has a surface 71 that extends along the circumferential direction of the supported portion 64 (pipe 6) so as to partially surround a portion of the circumferential direction of the supported portion 64 (pipe 6). The surface 71 may abut against the outer surface 65 of the supported portion 64.

[0030] 3 and 4, with the surface 71 of the pipe-side connection part 7 facing (in contact with) the outer surface 65 of the supported part 64, the end face of one side of the pipe-side connection part 7 (the one side of the pipe 6) and the outer surface 65 of the pipe 6 are fixed by welding. The symbol W1 in FIG. 3 indicates the welded part between the pipe-side connection part 7 and the pipe 6.

[0031] The pipe-side connection part 7 and the pipe 6 may be fixed by welding an end face on the other side (the other side of the pipe 6) of the pipe-side connection part 7 to the outer surface 65 of the pipe 6. The pipe-side connection part 7 and the pipe 6 may also be fixed by welding an end face on one side of the pipe-side connection part 7 to the outer surface 65 of the pipe 6 and welding an end face on the other side of the pipe-side connection part 7 to the outer surface 65 of the pipe 6.

[0032] The wall-side connection portion 8 has a surface 81 facing the wall surface 201 of the first member 200. The surface 81 may abut against the wall surface 201 of the first member 200. In the embodiment shown in FIGS. 3 and 4 , with the surface 81 of the wall-side connection portion 8 facing (abutting) the wall surface 201 of the first member 200, an end surface on one side (the one side of the piping 6) of the wall-side connection portion 8 is welded to the wall surface 201 of the first member 200, and an end surface on the other side (the other side of the piping 6) of the wall-side connection portion 8 is welded to the wall surface 201 of the first member 200, thereby fixing the wall-side connection portion 8 to the first member 200. Symbol W2 in FIG. 3 indicates a welded portion between the wall-side connection portion 8 and the first member 200.

[0033] In addition, the wall side connection portion 8 may be fixed to the first member 200 by either welding the end face of one side (the one side of the piping 6) of the wall side connection portion 8 to the wall surface 201 of the first member 200, or welding the end face of the other side (the other side of the piping 6) of the wall side connection portion 8 to the wall surface 201 of the first member 200.

[0034] As shown in Figures 3 and 4, the connecting portion 9 has at least one longitudinal portion 10 having a longitudinal direction that extends in a direction that intersects the axial direction (central axis C2) of the piping 6 and in a direction away from the piping 6 (in a direction toward the radially outward direction of the piping 6).

[0035] The piping support device 5 has at least one longitudinal portion 10, and is structured to constrain the radial direction of the piping 6 while allowing sliding in the direction along the extension direction of the piping 6. The piping support device 5 having such a structure can suppress the radial displacement of the piping 6, thereby suppressing a decrease in the vibration frequency of the piping 6, and therefore suppressing the piping 6 from resonating with the natural vibration of the combustor 3.

[0036] (Piping support device according to comparative example) FIG. 5 is a schematic cross-sectional view along the axial direction of the combustor 3 of a gas turbine 1 equipped with a pipe support device 05 according to a comparative example. As shown in FIG. 5, the pipe support device 05 according to the comparative example supports the pipe 6 by a dynamic seal such as a gland packing. The pipe support device 05 according to the comparative example can also suppress radial displacement of the pipe 6 by the dynamic seal. However, the dynamic seal is prone to deterioration over time due to long-term or repeated loads. In the pipe support device 05 according to the comparative example, the dynamic seal deteriorates over time in a relatively short period of time, which reduces the vibration frequency of the pipe 6, and there is a risk that the pipe 6 will resonate with the natural vibration of the combustor 3.

[0037] In contrast, the piping support device 5 has a structure that supports the piping 6 without using a dynamic seal such as a gland packing, and is less susceptible to deterioration over time due to long-term or repeated loads compared to when the piping 6 is supported by the dynamic seal, and therefore can support the piping 6 for a relatively long period of time.

[0038] 3, the other end 62 of the above-described pipe 6 has an insertion portion 62A inserted into an insertion hole 372 of a second member 300 having an insertion hole 372 with an inner diameter larger than the outer diameter of the pipe 6. The above-described pipe support device 5 is configured to support the area between the curved portion 63 of the pipe 6 and the insertion portion 62A.

[0039] In the illustrated embodiment, the pipe 6 is a liquid fuel pipe configured to allow a liquid fuel to flow therethrough. In some embodiments, the pipe 6 is a fuel oil pipe configured to allow a fuel oil to flow therethrough. The pipe support device 5 of the present disclosure is suitably applicable to cases where the pipe 6 is a liquid fuel pipe (e.g., a fuel oil pipe). Note that the pipe 6 may be configured to allow a fluid other than liquid fuel to flow therethrough, such as cooling water for cooling gas present around the pipe 6.

[0040] In the illustrated embodiment, the second member 300 is the second fuel nozzle 37 described above, and the insertion portion 62A of the pipe 6 is inserted into an insertion hole 372 formed by the inner surface of an outer casing 371 of the second fuel nozzle 37 extending along the axial direction of the combustor 3. The supported portion 64 of the pipe 6 is located between the curved portion 63 and the insertion portion 62A in the axial direction of the combustor 3.

[0041] According to the piping support device 5 of this embodiment, the piping 6 is cooled by the fluid flowing inside, and therefore, a thermal expansion difference may occur with respect to components other than the piping 6 that constitute the combustor 3 (for example, the second fuel nozzle 37). The curved portion 63 of the piping 6 is provided to absorb the thermal expansion difference. By having the piping support device 5 support the area between the curved portion 63 of the piping 6 and the insertion portion 62A, it is possible to effectively absorb the thermal expansion difference of the piping 6 with respect to components other than the piping 6 that constitute the combustor 3, particularly the second member 300 (the second fuel nozzle 37).

[0042] 3 , the combustor 3 described above has a curved portion accommodating space 102 for accommodating the curved portion 63 of the pipe 6. A part of the curved portion accommodating space 102 is formed by a wall surface 201 of the first member 200.

[0043] 3, the combustor 3 includes a manifold 100A formed integrally with the above-described other member 100 and the first member 200. Inside the manifold 100A, a liquid fuel storage space 101 for storing liquid fuel (e.g., fuel oil), a curved portion accommodating space 102 for accommodating the curved portion 63 of the piping 6, and a nozzle accommodating space 103 for accommodating at least a portion of the second fuel nozzle 37 are formed.

[0044] In the illustrated embodiment, the manifold 100A has wall surfaces 104, 105, 106, and 107 that form the curved portion accommodating space 102. Each of the wall surface 104 and the wall surface 105 is a surface that extends along a direction perpendicular to the axial direction of the combustor 3 (the extension direction of the central axis C1). The wall surface 104 is located on one side of the wall surface 105 in the axial direction of the combustor 3 (the one side of the piping 6) and faces the wall surface 105 with the curved portion accommodating space 102 (axial gap) interposed therebetween. Each of the wall surface 106 and the wall surface 107 is a surface that extends along the circumferential direction of the combustor 3. The wall surface 106 is located inward of the wall surface 107 in the radial direction of the combustor 3 and faces the wall surface 105 with the curved portion accommodating space 102 (radial gap) interposed therebetween.

[0045] In the illustrated embodiment, one end 61 of the pipe 6 is connected to the liquid fuel storage space 101 so that liquid fuel can be guided from the liquid fuel storage space 101 into the inside of the pipe 6.

[0046] As shown in Fig. 3, the above-described piping support device 5 according to some embodiments is configured to support the piping 6 in the curved portion accommodating space 102. According to the piping support device 5 according to the present embodiment, the curved portion accommodating space 102 can be utilized for the piping support device 5 to support the piping 6. According to such a piping support device 5, it is not necessary to provide a separate space in the combustor 3 for the piping support device 5 to support the piping 6, and therefore it is possible to prevent the combustor 3 from becoming larger and more complex in structure.

[0047] 3, the wall surface 201 of the first member 200 described above is located radially inward of the piping 6 in the combustor 3. In the illustrated embodiment, the wall surface 201 of the first member 200 to which the wall-side connecting portion 8 is connected is the wall surface 106 described above.

[0048] According to the piping support device 5 of this embodiment, it is easier to ensure a radial gap in the curved portion accommodating space 102 on the inner side of the piping 6 in the radial direction of the combustor 3 than on the outer side of the piping 6 in the radial direction of the combustor 3. By disposing the piping support device 5 on the inner side of the piping 6 in the radial direction of the combustor 3, the longitudinal length of the piping support device 5 can be made relatively large. By increasing the longitudinal length of the piping support device 5, the piping support device 5 can more easily deform (follow) sliding in the direction along the extension direction of the piping 6. According to such a piping support device 5, it is possible to effectively absorb the thermal expansion difference of the piping 6 relative to the members other than the piping 6 that constitute the combustor 3, in particular the second member 300 (second fuel nozzle 37).

[0049] In some other embodiments, the wall surface 201 of the first member 200 described above may be located radially outward of the piping 6. The wall surface 201 of the first member 200 to which the wall-side connecting portion 8 is connected may be the wall surface 107 described above.

[0050] When the radial gap between the wall surface 106 and the supported portion 64 is larger than the radial gap between the wall surface 107 and the supported portion 64, it is preferable to arrange the piping support device 5 on the inner side (wall surface 106 side) of the supported portion 64 in the radial direction of the combustor 3. Furthermore, when the radial gap between the wall surface 106 and the supported portion 64 is smaller than the radial gap between the wall surface 107 and the supported portion 64, it is preferable to arrange the piping support device 5 on the outer side (wall surface 107 side) of the supported portion 64 in the radial direction of the combustor 3.

[0051] (Piping support device according to the first embodiment) In some embodiments of the piping support device 5, as shown in Figures 3 and 4, at least one of the longitudinal portions 10 described above extends along a direction perpendicular to the extension direction of the portion (supported portion 64) connected to the piping side connection portion 7 of the piping 6, and includes plate-shaped portions 9A, 9B connected on one side to the piping side connection portion 7 and connected on the other side to the wall side connection portion 8.

[0052] In the illustrated embodiment, the piping support device 5 includes two plate-shaped portions 9A and 9B, but may include one or a plurality of plate-shaped portions 9A and 9B, such as three or more.

[0053] The plate-like portions 9A, 9B are formed in a flat plate shape having an end face 901 on one side in the thickness direction and an end face 902 on the other side in the thickness direction. One longitudinal end 91 of the plate-like portions 9A, 9B is connected to the pipe-side connection portion 7, and the other longitudinal end 92 is connected to the wall-side connection portion 8. The plate-like portions 9A, 9B may be formed integrally with the pipe-side connection portion 7 and the wall-side connection portion 8.

[0054] In the illustrated embodiment, one end face 901 and the other end face 902 of the plate-shaped portions 9A and 9B extend in a direction perpendicular to the axial direction of the combustor 3.

[0055] The piping support device 5 according to this embodiment is structured so that the plate-shaped portion 9A is deflected in the thickness direction of the plate-shaped portion 9A in response to thermal expansion of the piping 6, thereby enabling sliding in the direction along the extension direction of the piping 6. The piping support device 5 according to this embodiment has a simple structure, and therefore the manufacturing cost of the piping support device 5 can be reduced.

[0056] In some embodiments of the piping support device 5, at least one longitudinal portion 10 described above includes a plurality of plate-shaped portions 9A, 9B arranged at a distance in the extension direction of the portion (supported portion 64) connected to the piping side connection portion 7 of the piping 6.

[0057] In the illustrated embodiment, the end faces 901, 902 of the plurality of plate-like portions 9A, 9B face each other in the axial direction of the combustor 3 with an axial gap therebetween.

[0058] According to the piping support device 5 of this embodiment, by changing the number of plate-shaped portions 9A, 9B in the piping support device 5, the amount of deflection of the plate-shaped portions 9A, 9B in accordance with the thermal expansion of the piping 6 can be adjusted, thereby ensuring the desired vibration strength of the piping 6.

[0059] 6 and 7 are schematic views of a combustor 3 of a gas turbine 1 equipped with a pipe support device 5 according to some embodiments of the present disclosure, viewed from one side in the axial direction. As shown in FIG. 6, the pipe support device 5 according to some embodiments extends along the radial direction of the combustor 3.

[0060] In the embodiment shown in FIGS. 6 and 7 , the combustor 3 includes a plurality of pipes 6 arranged along the circumferential direction of the combustor 3, and a plurality of pipe support devices 5 that individually support corresponding pipes 6 among the plurality of pipes 6.

[0061] According to the piping support device 5 of this embodiment, by extending the piping support device 5 along the radial direction of the combustor 3, the structure is simpler than when the piping support device 5 is inclined in the circumferential direction of the combustor 3 with respect to the radial direction of the combustor 3, and therefore it is possible to reduce the manufacturing cost of the piping support device 5. Note that this embodiment is also applicable to the piping support device 5 according to the second embodiment shown in Figs. 11 and 12 .

[0062] 7, the pipe support device 5 according to some embodiments extends at an inclination in the circumferential direction of the combustor 3 with respect to the radial direction of the combustor 3. In the illustrated embodiment, the multiple pipe support devices 5 extend at an inclination in the same direction in the circumferential direction of the combustor 3 with respect to the radial direction of the combustor 3.

[0063] According to the piping support device 5 of this embodiment, by inclining the piping support device 5 in the circumferential direction of the combustor 3 with respect to the radial direction of the combustor 3, the longitudinal length of the piping support device 5 can be increased compared to when the piping support device 5 extends along the radial direction of the combustor 3. Increasing the longitudinal length of the piping support device 5 makes it easier for the piping support device 5 to deform (follow) sliding in the direction along the extension direction of the piping 6. According to such a piping support device 5, it is possible to effectively absorb the thermal expansion difference of the piping 6 relative to the components other than the piping 6 that constitute the combustor 3. Note that this embodiment can also be applied to the piping support device 5 according to the second embodiment shown in FIGS. 11 and 12.

[0064] (thick part) Fig. 8 is a schematic cross-sectional view along the axial direction of the combustor 3 of the gas turbine 1 equipped with a modified example of the pipe support device 5 according to the first embodiment of the present disclosure. In the pipe support device 5 according to some embodiments, as shown in Fig. 8, the pipe-side connecting portion 7 described above is connected to a thick portion 64A formed to be thicker than an adjacent portion in the extension direction of the pipe 6. In the illustrated embodiment, the thick portion 64A has a larger outer diameter than an adjacent portion in the extension direction of the pipe 6.

[0065] According to the piping support device 5 of this embodiment, by connecting the piping-side connecting portion 7 to the thick-walled portion 64A of the piping 6, it is possible to ensure a connection area (e.g., a welding area) for the piping 6 relative to the piping-side connecting portion 7. Furthermore, by connecting the piping-side connecting portion 7 to the thick-walled portion 64A of the piping 6, it is possible to separate the portion of the piping support device 5 connected to the piping 6 from a location where relatively high stress due to thermal expansion of the piping 6 acts, thereby preventing relatively high stress from acting on that portion. Note that this embodiment in which the piping-side connecting portion 7 is connected to the thick-walled portion 64A can also be applied to the piping support device 5 according to the second embodiment shown in FIGS. 11 and 12.

[0066] (groove) 9 and 10 are schematic cross-sectional views showing a cross section perpendicular to the axial direction of the combustor 3 of the gas turbine 1 equipped with the piping support device 5 according to some embodiments of the present disclosure. In the piping support device 5 according to some embodiments, as shown in FIGS. 8 to 10, the wall-side connecting portion 8 is connected to a groove portion 108 that is recessed more than an adjacent portion in the axial direction of the first member 200.

[0067] In the embodiment shown in FIG. 9 , a plurality of grooves 108 are formed in the wall surface 201 of the first member 200 at intervals in the circumferential direction of the combustor 3, and each of the plurality of grooves 108 is connected to a wall-side connection portion 8 that individually corresponds to the groove 108.

[0068] In the embodiment shown in FIG. 10, a ring-shaped (endless) groove 108 extending along the circumferential direction of the combustor 3 is formed in the wall surface 201 of the first member 200, and the wall-side connection portions 8 of the multiple piping support devices 5 are connected to the groove 108 at positions spaced apart in the circumferential direction.

[0069] According to the piping support device 5 of this embodiment, by connecting the wall-side connection portion 8 to the groove portion 108, the longitudinal length of the piping support device 5 can be increased compared to when the wall-side connection portion 8 is connected to a portion other than the groove portion 108 of the first member 200. Increasing the longitudinal length of the piping support device 5 makes it easier for the piping support device 5 to deform (follow) sliding in the direction along the extension direction of the piping 6. This piping support device 5 can effectively absorb the thermal expansion difference of the piping 6 relative to the components other than the piping 6 that constitute the combustor 3. Note that this embodiment, in which the wall-side connection portion 8 is connected to the groove portion 108, is applicable regardless of whether or not the piping-side connection portion 7 is connected to the thick portion 64A, and can also be applied to the piping support device 5 according to the second embodiment shown in FIGS. 11 and 12.

[0070] (Pipe support device according to second embodiment) Fig. 11 is a schematic cross-sectional view taken along the axial direction of the combustor 3 of a gas turbine 1 equipped with a pipe support device 5 according to a second embodiment of the present disclosure. Fig. 12 is a schematic perspective view of the pipe support device 5 according to the second embodiment of the present disclosure. In the pipe support device 5 according to some embodiments, the above-mentioned connection portion 9 includes a strut connection portion 96 having at least one first strut 93 (in the illustrated example, a plurality of first struts), at least one second strut 94 (in the illustrated example, a plurality of second struts), and at least one third strut 95 (in the illustrated example, a plurality of third struts), as shown in Figs. 11 and 12 .

[0071] The first strut 93 has a first base end 931 that is connected to the pipe-side connection portion 7, and a first tip end 932 that is the end opposite to the first base end 931. The first strut 93 is a columnar or rod-shaped member that extends from the first base end 931 to the first tip end 932 toward the wall-side connection portion 8.

[0072] The second strut 94 has a second base end 941 connected to the wall-side connection portion 8 and a second tip end 942 that is the end opposite to the second base end 941. The second strut 94 is a columnar or rod-shaped member that extends from the second base end 941 to the second tip end 942 toward the pipe-side connection portion 7.

[0073] The third strut 95 is a columnar or rod-shaped member extending along the extension direction of the first strut 93 and the second strut 94 in a positional range between the first tip 932 and the second tip 942 in the extension direction of the first strut 93 and the second strut 94 (the direction along the extension direction of the central axis C3 of the connecting portion 9).

[0074] The strut connector 96 connects the first distal end 932 and the second distal end 942 .

[0075] The piping support device 5 of this embodiment is structured to ensure the support strength to support the piping 6 while allowing for displacement between the piping side connection portion 7 and the wall side connection portion 8 that occurs in response to thermal expansion of the piping 6, in a direction that intersects the extension direction of the first strut 93 and the second strut 94.

[0076] In the pipe support device 5 according to some embodiments, the strut connection portion 96 includes a first strut connection portion 97 and a second strut connection portion 98. The first strut connection portion 97 is connected to the second strut connection portion 98 via a third strut 95.

[0077] The first strut connection portion 97 connects the first tip portions 932 of multiple first struts 93 arranged circumferentially at a first radial position RP1 around a central axis (central axis line C3) along the extension direction of the first strut 93 and the second strut 94.

[0078] The second strut connecting portion 98 is connected to second tip portions 942 of a plurality of second struts 94 that are arranged in the circumferential direction at a second radial position RP2 that is either inside (in the illustrated example) or outside the first radial position RP1.

[0079] The third strut 95 has a third base end 951 and a third distal end 952 which is the end opposite to the third base end 951 .

[0080] The first strut connection portion 97 is connected to the third base ends 951 of multiple third struts 95 that are arranged circumferentially at radial positions between a first radial position RP1 and a second radial position RP2 around a central axis (central axis C3) along the extension direction of the first strut 93 and the second strut 94.

[0081] The second strut connection portion 98 is connected to the third tip portions 952 of multiple third struts 95 that are arranged circumferentially at radial positions between the first radial position RP1 and the second radial position RP2 around a central axis (central axis line C3) along the extension direction of the first strut 93 and the second strut 94.

[0082] In the illustrated embodiment, the pipe-side connection part 7 is formed with an insertion hole 72 into which the second strut coupling part 98 can be inserted. The first strut coupling part 97 is formed with an insertion hole 97A through which multiple second struts 94 are inserted together. The second strut coupling part 98 is formed with a through hole 98A radially inward of the coupling part 9 relative to the second radial position RP2.

[0083] According to the piping support device 5 of this embodiment, the first strut 93, the third strut 95, and the second strut 94 are connected in a zigzag pattern, so that the radial displacement of the piping 6 can be made relatively small while allowing displacement between the piping side connection portion 7 and the wall side connection portion 8 that occurs in response to thermal expansion of the piping 6.

[0084] (Piping support method) A method for supporting a pipe 6 according to some embodiments is a method for supporting the pipe 6 arranged inside the combustor 3 of the gas turbine 1 by a pipe support device 5. The method for supporting the pipe 6 includes a first connecting step of connecting the wall-side connecting portion 8 of the pipe support device 5 to the wall surface 201 of the first member 200, and a second connecting step of connecting the pipe-side connecting portion 7 of the pipe support device 5 to the outer surface 65 of the pipe 6.

[0085] The first connecting step may be performed after the second connecting step or before the second connecting step. In the first connecting step, each of the wall-side connecting portions 8 of the multiple piping support devices 5 may be connected to the wall surface 201 of the first member 200. In addition, in the second connecting step, each of the piping-side connecting portions 7 of the multiple piping support devices 5 may be connected to the outer surface 65 of the piping 6 individually corresponding to the piping support device 5.

[0086] According to the support method for the piping 6 according to this embodiment, the piping support device 5 can be supported by the first member 200, and the piping 6 can be supported by the piping support device 5, through the first connecting step and the second connecting step. The piping support device 5 is structured to constrain the piping 6 in the radial direction while allowing the piping 6 to slide in a direction along the extension direction. Supporting the piping 6 with the piping support device 5 having such a structure can suppress a decrease in the natural frequency of the piping 6, thereby suppressing the piping 6 from resonating with the natural vibration of the combustor 3. Furthermore, supporting the piping 6 with the piping support device 5 can support the piping 6 for a relatively long period of time compared to supporting the piping 6 with a dynamic seal such as a gland packing.

[0087] In this specification, expressions expressing relative or absolute arrangement such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "concentric," or "coaxial" not only express such an arrangement strictly, but also express a state in which there is a relative displacement with a tolerance or an angle or distance to the extent that the same function is obtained. For example, expressions such as "identical," "equal," and "homogeneous" that indicate that something is in an equal state not only indicate a state of strict equality, but also indicate a state in which there is a tolerance or a difference to the extent that the same function is obtained. Furthermore, in this specification, expressions representing shapes such as a rectangular shape or a cylindrical shape not only represent rectangular shapes or cylindrical shapes in the strict geometric sense, but also represent shapes including uneven portions, chamfered portions, etc., to the extent that the same effect can be obtained. Furthermore, in this specification, the expressions "comprise," "include," or "have" a component are not exclusive expressions that exclude the presence of other components.

[0088] The present disclosure is not limited to the above-described embodiments, but also includes modifications to the above-described embodiments and appropriate combinations of these modifications.

[0089] The contents of the above-described embodiments can be understood, for example, as follows.

[0090] [1] At least one embodiment of the piping support device (5) of the present disclosure includes: A piping support device (5) for supporting piping (6) arranged inside a combustor (3) of a gas turbine (1), comprising: The pipe (6) is configured such that one side (61) of the pipe (6) is fixed to another member (100), and a part of the pipe (6) has a curved portion (63) that is curved in a direction intersecting an axial direction of the pipe (6), and a fluid having a temperature lower than that of the ambient atmosphere of the pipe (6) flows through the pipe (6); The piping support device (5) a pipe-side connection portion (7) connected to an outer surface (65) of the pipe (6); a wall-side connection portion (8) connected to a wall surface (201) of a first member (200) having a wall surface (201) facing the outer surface (65) of the pipe (6) via a radial gap; and a connecting portion (9) that connects the piping side connecting portion (7) and the wall side connecting portion (8), the connecting portion (9) having at least one longitudinal portion (10) having a longitudinal direction that extends in a direction that intersects with the axial direction of the piping (6) and in a direction that is away from the piping (6).

[0091] The pipe support device (5) described in [1] above is structured to restrain the pipe (6) in the radial direction while allowing the pipe (6) to slide in the direction along the extension direction. The pipe support device (5) having such a structure can suppress the radial displacement of the pipe (6) and thereby suppress a decrease in the vibration frequency of the pipe (6), thereby suppressing the pipe (6) from resonating with the natural vibration of the combustor (3). Furthermore, since the pipe (6) is supported by the pipe support device (5), it is less susceptible to deterioration over time due to long-term or repeated loads compared to when the pipe (6) is supported by a dynamic seal such as a gland packing, and therefore the pipe (6) can be supported for a relatively long period of time.

[0092] [2] In some embodiments, the piping support device (5) according to [1] above, The other side (62) of the pipe (6) has an insertion portion (62A) inserted into an insertion hole (372) of a second member (300) having an insertion hole (372) with an inner diameter larger than the outer diameter of the pipe (6), The pipe support device (5) is configured to support the pipe (6) between the curved portion (63) and the insertion portion (62A).

[0093] According to the piping support device (5) described in [2] above, since the piping (6) is cooled by the fluid flowing therethrough, a thermal expansion difference may occur with respect to components other than the piping (6) constituting the combustor (3). The curved portion (63) of the piping (6) is provided to absorb the thermal expansion difference. By supporting the piping (6) between the curved portion (63) and the insertion portion (62A) using the piping support device (5), the thermal expansion difference of the piping (6) with respect to components other than the piping (6) constituting the combustor (3) (particularly the second member 300) can be effectively absorbed.

[0094] [3] In some embodiments, the piping support device (5) according to [2] above, the combustor (3) has an accommodation space (102, curved portion accommodation space) for accommodating the curved portion (63) of the pipe (6), the accommodation space (102) being partially formed by the wall surface (201) of the first member (200), The piping support device (5) is configured to support the piping (6) in the accommodation space (102).

[0095] According to the description in [3] above, the accommodation space 102 for accommodating the curved portion 63 of the pipe 6 can be used for supporting the pipe 6 by the pipe support device 5. Such a pipe support device 5 does not require a separate space in the combustor 3 for supporting the pipe 6 by the pipe support device 5, and therefore, it is possible to prevent the combustor 3 from becoming larger and more complex in structure.

[0096] [4] In some embodiments, the piping support device (5) according to [3] above, The wall surface (201) of the first member (200) is located radially inward of the pipe (6) in the combustor (3).

[0097] According to the pipe support device (5) described in [4] above, it is easier to ensure a radial gap in the accommodation space (102) radially inward of the pipe (6) relative to the combustor (3) than radially outward of the pipe (6) relative to the combustor (3). By disposing the pipe support device (5) radially inward of the combustor (3) relative to the pipe (6), the longitudinal length of the pipe support device (5) can be made relatively large. By increasing the longitudinal length of the pipe support device (5), the pipe support device (5) can more easily deform (follow) sliding in the direction along the extension direction of the pipe (6). Such a pipe support device (5) can effectively absorb the thermal expansion difference of the pipe (6) relative to the components other than the pipe (6) that constitute the combustor (3).

[0098] [5] In some embodiments, the piping support device (5) according to any one of [1] to [4] above, The at least one longitudinal portion (10) extends along a direction perpendicular to the extension direction of the portion of the pipe (6) connected to the pipe-side connection portion (7), and includes a plate-shaped portion (9A) connected on one side to the pipe-side connection portion (7) and connected on the other side to the wall-side connection portion (8).

[0099] The piping support device (5) described in [5] above has a structure in which the plate-shaped portion (9A) is deflected in the thickness direction of the plate-shaped portion (9A) in response to thermal expansion of the piping (6), thereby enabling sliding in the direction along the extension direction of the piping (6). The piping support device (5) described in [5] above has a simple structure, which reduces the manufacturing cost of the piping support device (5).

[0100] [6] In some embodiments, the piping support device (5) according to [5] above, The at least one longitudinal portion (10) includes a plurality of plate-shaped portions (9A, 9B) arranged at a distance in the extension direction of the portion of the pipe (6) connected to the pipe-side connection portion (7).

[0101] According to the piping support device (5) described in [6] above, by changing the number of plate-shaped portions (9A, 9B) in the piping support device (5), the amount of deflection of the plate-shaped portions (9A, 9B) in accordance with the thermal expansion of the piping (6) can be adjusted, thereby ensuring the desired vibration strength of the piping (6).

[0102] [7] In some embodiments, the piping support device (5) according to any one of [1] to [4] above, The connecting portion (9) is at least one first strut (93) having a first base end (931) connected to the pipe-side connection portion (7) and a first tip end (932) opposite to the first base end (931), and extending from the first base end (931) to the first tip end (932) toward the wall-side connection portion (8); at least one second strut (94) having a second base end (941) connected to the wall-side connection portion (8) and a second tip end (942) that is an end opposite to the second base end (941), and extending from the second base end (941) to the second tip end (942) toward the pipe-side connection portion (7); a strut connector (96) having at least one third strut (95) extending along the extension direction of the first strut (93) and the second strut (94) in a position range between the first tip portion (932) and the second tip portion (942) in the extension direction of the first strut (93) and the second strut (94), and connecting the first tip portion (932) and the second tip portion (942); The at least one longitudinal portion (10) includes the first strut (93), the second strut (94) and the third strut (95).

[0103] The piping support device (5) described in [7] above is structured to ensure the support strength for the piping (6) while allowing for displacement between the piping-side connection portion (7) and the wall-side connection portion (8) that occurs in response to thermal elongation of the piping (6), in a direction that intersects with the extension direction of the first strut (93) and the second strut (94).

[0104] [8] In some embodiments, the piping support device (5) according to [7] above, The strut connector (96) a first strut connecting portion (97) to which the first tip portions (932) of the plurality of first struts (93) arranged in a circumferential direction at a first radial position (RP1) around a central axis (central axis line C3) along the extension direction of the first strut (93) and the second strut (94) are connected; a second strut connecting portion (98) to which the second tip portions (942) of the plurality of second struts (94) arranged in the circumferential direction at a second radial position (RP2) that is inside or outside the first radial position (RP1) are connected, The first strut connector (97) is connected to the second strut connector (98) via the third strut (95).

[0105] According to the piping support device (5) described in [8] above, the first strut (93), the third strut (95), and the second strut (94) are connected in a zigzag pattern, so that the radial displacement of the piping (6) can be made relatively small while allowing displacement between the piping-side connection portion (7) and the wall-side connection portion (8) that occurs in response to thermal elongation of the piping (6).

[0106] [9] In some embodiments, the piping support device (5) according to any one of [1] to [8] above, The pipe-side connecting portion (7) was connected to a thick portion (64A) of the pipe (6) that was thicker than the adjacent portion in the extending direction of the pipe (6).

[0107] According to the piping support device 5 described in [9] above, by connecting the piping-side connecting portion 7 to the thick-walled portion 64A of the piping 6, it is possible to ensure a connection area (e.g., a welding area) of the piping 6 to the piping-side connecting portion 7. Furthermore, by connecting the piping-side connecting portion 7 to the thick-walled portion 64A of the piping 6, it is possible to separate the portion of the piping support device 5 connected to the piping 6 from a location where a relatively high stress due to thermal expansion of the piping 6 acts, thereby preventing the relatively high stress from acting on that portion.

[0108]

[10] In some embodiments, the piping support device (5) according to any one of [1] to [9] above, The wall-side connection portion (8) is connected to a groove portion (108) that is recessed in the axial direction of the first member (200) more than an adjacent portion.

[0109] According to the piping support device (5) described in

[10] above, by connecting the wall-side connection portion (8) to the groove portion (108), the longitudinal length of the piping support device (5) can be increased compared to when the wall-side connection portion (8) is connected to a portion other than the groove portion (108) of the first member (200). Increasing the longitudinal length of the piping support device (5) makes it easier for the piping support device (5) to deform (follow) sliding in the direction along the extension direction of the piping (6). Such a piping support device (5) can effectively absorb the thermal expansion difference of the piping (6) relative to the members other than the piping (6) that constitute the combustor (3).

[0110]

[11] In some embodiments, the piping support device (5) according to any one of [1] to

[10] above, The piping support device (5) extends along the radial direction of the combustor (3).

[0111] According to the piping support device (5) described in

[11] above, by extending the piping support device (5) along the radial direction of the combustor (3), the piping support device (5) has a simpler structure than when the piping support device (5) is inclined in the circumferential direction of the combustor (3) with respect to the radial direction of the combustor (3), and therefore, the manufacturing cost of the piping support device (5) can be reduced.

[0112]

[12] In some embodiments, the piping support device (5) according to any one of [1] to

[10] above, The piping support device (5) extends in a circumferential direction of the combustor (3) at an angle with respect to a radial direction of the combustor.

[0113] According to the piping support device (5) described in

[12] above, by inclining the piping support device (5) in the circumferential direction of the combustor (3) with respect to the radial direction of the combustor (3), the longitudinal length of the piping support device (5) can be increased compared to when the piping support device (5) extends along the radial direction of the combustor (3). By increasing the longitudinal length of the piping support device (5), the piping support device (5) can more easily deform (follow) sliding in the direction along the extension direction of the piping (6). According to such a piping support device (5), it is possible to effectively absorb the thermal expansion difference of the piping (6) relative to the components other than the piping (6) that constitute the combustor (3).

[0114]

[13] In some embodiments, the piping support device (5) according to any one of [1] to

[12] above, The pipe (6) is a liquid fuel pipe configured to allow liquid fuel to flow.

[0115] The pipe support device (5) of the present disclosure is suitably applicable when the pipe (6) is a liquid fuel pipe.

[0116]

[14] At least one embodiment of the present disclosure provides a method for supporting a pipe (6), comprising: A method for supporting a pipe (6) arranged inside a combustor (3) of a gas turbine (1) on a pipe support device (5), comprising: The pipe (6) is configured such that one side (61) of the pipe (6) is fixed to another member (100), and a part of the pipe (6) has a curved portion (63) that is curved in a direction intersecting an axial direction of the pipe (6), and a fluid having a temperature lower than that of the ambient atmosphere of the pipe (6) flows through the pipe (6); The piping support device (5) a pipe-side connection portion (7) connected to an outer surface (65) of the pipe (6); a pipe-side connection portion (7) connected to an outer surface (65) of the pipe (6); a wall-side connection portion (8) connected to the outer surface (201) of a first member (200) having a wall surface (201) facing the outer surface (65) of the pipe (6) via a radial gap; a connecting portion (9) connecting the pipe-side connecting portion (7) and the wall-side connecting portion (8), the connecting portion (9) having at least one longitudinal portion (10) having a longitudinal direction extending in a direction intersecting the axial direction of the pipe (6) and in a direction away from the pipe (6), The method of supporting the pipe (6) is as follows: a first connecting step of connecting the wall-side connecting portion (8) of the piping support device (5) to the outer surface (201) of the first member (200); and a second connecting step of connecting the pipe-side connecting portion (7) of the pipe support device (5) to the outer surface (65) of the pipe (6).

[0117] According to the method for supporting a pipe (6) described in

[14] above, the first connecting step and the second connecting step can support the pipe support device (5) on the first member (200), and the pipe (6) can be supported by the pipe support device (5). The pipe support device (5) is structured to constrain the pipe (6) in the radial direction while allowing the pipe (6) to slide in the direction along the extension direction. Supporting the pipe (6) with the pipe support device (5) having such a structure can suppress a decrease in the natural frequency of the pipe (6), thereby suppressing the pipe (6) from resonating with the natural frequency of the combustor (3). Furthermore, supporting the pipe (6) with the pipe support device (5) can support the pipe (6) for a relatively long period of time compared to supporting the pipe (6) with a dynamic seal such as a gland packing. [Explanation of symbols]

[0118] 1. Gas turbine 2 Compressor 3 Combustor 4 Turbines 5 Piping support device 6 Piping 7 Piping side connection 8 Wall side connection 9 Connecting part 9A, 9B Plate-shaped part 10 Longitudinal section 11 rotor 12 Casing 20 Compressor compartment 21 Stator blade 22 Moving blade 23 Air intake 31 Combustor casing 32 Combustion tube 33 First combustion burner 34 Second combustion burner 35 No. 1 fuel nozzle 36 No. 1 fuel port 37 No. 2 fuel nozzle 38 No. 2 fuel port 39 Outer cylinder 40 Turbine casing 41 Combustion gas passage 42 Stator blade 43 Moving blade 44 Exhaust chamber 62A Insertion section 63 Curved section 64 Supported part 65 Exterior 100 Other parts 100A manifold 101 Liquid fuel storage space 102 Curved section storage space 103 Nozzle storage space 104, 105, 106, 107 Wall 200 First member 201 Wall 300 Second member 311 Cabin entrance 321 Inner cylinder 322 Tail tube 371 Outer cylinder 372 Insertion hole 390 Air passage C1 (combustor) central axis C2 (Pipe) central axis C3 (connection) central axis O axis

Claims

1. A piping support device for supporting piping arranged inside a combustor of a gas turbine, comprising: The piping is configured such that one side of the piping is fixed to another member, a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid that is lower in temperature than the ambient atmosphere of the piping flows through the piping, causing the piping to thermally expand toward the other side of the piping, The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; a connecting portion that connects the pipe-side connecting portion and the wall-side connecting portion, the connecting portion having at least one longitudinal portion that has a longitudinal direction that extends in a direction that intersects with the axial direction of the pipe and in a direction that is away from the pipe; the at least one longitudinal portion extends along a direction perpendicular to an extension direction of a supported portion, which is a portion of the piping that is connected to the piping-side connection portion, and includes a plate-like portion that is connected on one side to the piping-side connection portion and on the other side to the wall-side connection portion, The plate-shaped portion is configured to bend in a thickness direction of the plate-shaped portion in response to thermal expansion of the piping. Piping support device.

2. A piping support device for supporting piping arranged inside a combustor of a gas turbine, comprising: The piping is configured such that one side of the piping is fixed to another member, and a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid having a temperature lower than that of a surrounding atmosphere of the piping flows through the piping; The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; a connecting portion that connects the pipe-side connecting portion and the wall-side connecting portion, the connecting portion having at least one longitudinal portion that has a longitudinal direction that extends in a direction that intersects with the axial direction of the pipe and in a direction that is away from the pipe; the at least one longitudinal portion extends along a direction perpendicular to an extension direction of a supported portion that is a portion of the piping that is connected to the piping-side connection portion, and includes a plurality of plate-like portions that are connected on one side to the piping-side connection portion and connected on the other side to the wall-side connection portion, The plurality of plate-shaped portions are arranged at intervals in an extension direction of the supported portion of the piping. Piping support device.

3. A piping support device for supporting piping arranged inside a combustor of a gas turbine, comprising: The piping is configured such that one side of the piping is fixed to another member, and a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid having a temperature lower than that of a surrounding atmosphere of the piping flows through the piping; The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; a connecting portion that connects the pipe-side connecting portion and the wall-side connecting portion, the connecting portion having at least one longitudinal portion that has a longitudinal direction that extends in a direction that intersects with the axial direction of the pipe and in a direction that is away from the pipe; The connecting portion is at least one first strut having a first base end connected to the pipe-side connection portion and a first tip end opposite the first base end, the first strut extending from the first base end to the first tip end toward the wall-side connection portion; at least one second strut having a second base end connected to the wall-side connection portion and a second tip end opposite the second base end, the second strut extending from the second base end to the second tip end toward the pipe-side connection portion; a strut connector having at least one third strut extending along the extension direction of the first struts and the second struts in a positional range between the first tip end portion and the second tip end portion in the extension direction of the first struts and the second struts, the strut connector connecting the first tip end portion and the second tip end portion; the at least one longitudinal portion includes the first strut, the second strut, and the third strut. Piping support device.

4. The strut connection portion is a first strut connection portion to which the first tip ends of a plurality of the first struts are connected, the first struts being arranged in a circumferential direction at a first radial position around a central axis along the extension direction of the first strut and the second strut; a second strut connection portion to which the second tip ends of the plurality of second struts arranged in the circumferential direction are connected at a second radial position that is either inside or outside the first radial position, the first strut connection portion is connected to the second strut connection portion via the third strut; The piping support device according to claim 3 .

5. the other side of the pipe has an insertion portion inserted into an insertion hole of a second member having an insertion hole with an inner diameter larger than an outer diameter of the pipe; The piping support device is configured to support the piping between the curved portion and the insertion portion. The piping support device according to any one of claims 1 to 4.

6. the combustor has an accommodation space for accommodating the curved portion of the piping, the accommodation space being partially formed by the outer surface of the first member, The piping support device is configured to support the piping in the accommodation space. The piping support device according to claim 5 .

7. the wall surface of the first member is located more inward than the piping in the radial direction of the combustor. The piping support device according to claim 6.

8. The pipe-side connection portion is connected to a thick portion formed to be thicker than an adjacent portion in an extension direction of the pipe. The piping support device according to any one of claims 1 to 4.

9. The wall-side connection portion is connected to a groove portion that is recessed more than an adjacent portion in the axial direction of the first member. The piping support device according to any one of claims 1 to 4.

10. the piping support device extends along a radial direction of the combustor. The piping support device according to any one of claims 1 to 4.

11. the piping support device extends in a circumferential direction of the combustor at an angle with respect to a radial direction of the combustor. The piping support device according to any one of claims 1 to 4.

12. The piping is a liquid fuel pipe configured to allow liquid fuel to flow. The piping support device according to any one of claims 1 to 4.

13. A method for supporting piping arranged inside a combustor of a gas turbine by a piping support device, comprising: The piping is configured such that one side of the piping is fixed to another member, and a part of the piping has a curved portion that is curved in a direction intersecting an axial direction of the piping, and a fluid having a temperature lower than that of a surrounding atmosphere of the piping flows through the piping; The piping support device is a pipe-side connection portion connected to an outer surface of the pipe; a wall-side connection portion connected to a wall surface of a first member having a wall surface facing the outer surface of the pipe with a radial gap therebetween; a connecting portion that connects the pipe-side connecting portion and the wall-side connecting portion, the connecting portion having at least one longitudinal portion that has a longitudinal direction that extends in a direction that intersects with the axial direction of the pipe and in a direction that is away from the pipe; The method for supporting the piping includes: a first connecting step of connecting the wall-side connecting portion of the piping support device to the wall surface of the first member; a second connecting step of connecting the pipe-side connecting portion of the pipe support device to the outer surface of the pipe, Pipe support method.

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