Gas turbine inlet cylinder overhaul transfer system and overhaul transfer method

Abstract

The present invention discloses a maintenance transfer system and a maintenance transfer method for a gas turbine inlet cylinder, including an intake volute, a drive shaft, an inlet cylinder, a housing, a foundation, a guide rail, a lifting device and a temporary platform. A conical cavity is provided in the intake volute; the inlet cylinder is arranged on the drive shaft and fitted in the conical cavity; the housing is sleeved on the outer peripheral side of the drive shaft. The housing includes a first shell and a second shell, and the first shell is located above the second shell. The housing is formed by the splicing of the first shell and the second shell; the foundation is arranged below the drive shaft; the guide rail is fixed on the foundation and located between the second shell and the foundation. The guide rail extends along the axial direction of the drive shaft and extends into the conical cavity, and the guide rail is connected to the inlet cylinder; the lifting device is arranged on the guide rail and can slide along the extension direction of the guide rail. The lifting device is suitable for lifting the maintenance components of the inlet cylinder; the temporary platform is arranged on the second shell. The maintenance transfer system of the present invention simplifies the maintenance process and the structural layout, improves the maintenance efficiency and reduces the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbine maintenance, and specifically, to a maintenance transfer system for a gas turbine inlet cylinder and a maintenance transfer method using the maintenance transfer system. Background Art

[0002] The inlet cylinder of a gas turbine needs to be fitted in the conical cavity of the inlet volute. The inlet cylinder is then connected to the generator rotor through an intermediate shaft, and a housing is provided on the outer peripheral side of the intermediate shaft. Since the axial dimension of the conical cavity is relatively long, when performing maintenance on the bearing box of the inlet cylinder, it is necessary to remove components such as the inlet volute, the housing, and the cylinder body of the inlet cylinder. The disassembly process is complex and cumbersome, and the maintenance cost is relatively high. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent.

[0004] To this end, an embodiment of the present invention provides a maintenance transfer system for a gas turbine inlet cylinder, which simplifies the maintenance process and structural layout, improves the maintenance efficiency, and reduces the maintenance cost.

[0005] An embodiment of the present invention also provides a maintenance transfer method for a gas turbine inlet cylinder using the above-mentioned maintenance transfer system for a gas turbine inlet cylinder.

[0006] The maintenance transfer system for a gas turbine inlet cylinder according to an embodiment of the present invention includes: an inlet volute, in which a conical cavity is provided; a drive shaft and an inlet cylinder, the inlet cylinder is provided on the drive shaft and fitted in the conical cavity, and the drive shaft is adapted to be drivingly connected to the gas turbine rotor and the generator rotor; a housing, the housing is sleeved on the outer peripheral side of the drive shaft, the housing includes a first shell and a second shell, the first shell is located above the second shell, and the housing is formed by splicing the first shell and the second shell; a foundation, the foundation is provided below the drive shaft; a guide rail, the guide rail is fixed on the foundation and located between the second shell and the foundation, the guide rail extends along the axial direction of the drive shaft and extends into the conical cavity, and the guide rail is connected to the inlet cylinder; a lifting device, the lifting device is provided on the guide rail and can slide along the extension direction of the guide rail, and the lifting device is adapted to lift the maintenance components of the inlet cylinder; a temporary platform, the temporary platform is adapted to be provided on the second shell after the first shell is removed, and the temporary platform is adapted to receive the maintenance components lifted by the lifting device.

[0007] The maintenance transfer system for a gas turbine inlet cylinder according to an embodiment of the present invention simplifies the maintenance process and structural layout, improves the maintenance efficiency, and reduces the maintenance cost.

[0008] In some embodiments, the second housing has an axial surface that extends along the axis of the transmission shaft. The axial surface is adapted to be in contact with the first housing, and the temporary platform is adapted to be disposed on the axial surface after the first housing is removed.

[0009] In some embodiments, the temporary platform is detachably connected to the second housing.

[0010] In some embodiments, the housing includes a plurality of housing segments that are sequentially connected along the axis of the transmission shaft. The first housing includes a plurality of first sub-housings that are sequentially connected along the axis of the transmission shaft. The second housing includes a plurality of second sub-housings that are sequentially connected along the axis of the transmission shaft. The housing segments are formed by fitting together the first sub-housings and the second sub-housings.

[0011] In some embodiments, the housing includes a gasket that is sandwiched between two adjacent housing segments. The gasket is adapted to adjust the axial length of the housing and correct the position of the housing segments.

[0012] In some embodiments, two adjacent housing segments are connected by a flange. The radial dimension of the flange is greater than the radial dimension of the housing, and the width dimension of the guide rail is greater than the radial dimension of the flange.

[0013] In some embodiments, the lifting device is a gantry crane that straddles the outer periphery of the housing. The gantry crane has a first column and a second column, and the first column and the second column are slidably assembled with the guide rail in a guiding manner. The housing is located between the first column and the second column.

[0014] In some embodiments, a plurality of support members are provided between the transmission shaft and the foundation. The support member includes a first section and a second section. The first section supports between the transmission shaft and the housing, and the second section supports between the housing and the foundation. The first section and the second section are coaxially arranged.

[0015] The gas turbine inlet cylinder overhaul and transfer method according to the embodiments of the present invention includes the following steps:

[0016] S1: Remove the first housing, and then fix the temporary platform on the second housing;

[0017] S2: Move the lifting device towards the inlet cylinder side, and use the lifting device to lift the overhaul components of the inlet cylinder;

[0018] S3: Move the lifting device towards the temporary platform side, and then place the overhaul components on the temporary platform;

[0019] S4: Move the maintenance parts on the temporary platform to the maintenance position and perform maintenance;

[0020] S5: Repeat steps S2 to S4 until the maintenance of all maintenance parts is completed.

[0021] In some embodiments, the gas turbine inlet cylinder maintenance transfer method further includes the following steps:

[0022] S6: After the maintenance of the maintenance parts is completed, place the maintenance parts on the temporary platform;

[0023] S7: Use the lifting device to lift the maintenance parts on the temporary platform to the inlet cylinder, and then complete the installation of the maintenance parts. Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the maintenance transfer system of the embodiment of the present invention Figure 1 .

[0025] Figure 2 is the overall structural schematic diagram of the maintenance transfer system of the embodiment of the present invention Figure 2 .

[0026] Reference Signs:

[0027] Inlet volute 1; drive shaft 2; inlet cylinder 3; second shell 4; foundation 5; guide rail 6; lifting device 7; temporary platform 8; support column 9; first section 10; second section 11; axial plane 12; second sub-shell 13. Detailed Embodiments

[0028] The following describes in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0029] As Figure 1 and Figure 2 shown, the gas turbine inlet cylinder 3 maintenance transfer system of the embodiment of the present invention includes an inlet volute 1, a drive shaft 2, an inlet cylinder 3, a housing, a foundation 5, a guide rail 6, a lifting device 7 and a temporary platform 8.

[0030] The inlet volute 1 is provided with a conical cavity. As Figure 1 shown, the conical cavity is provided in the inlet volute 1, the conical cavity extends along the left-right direction, and the cross-section of the conical cavity gradually becomes smaller from left to right.

[0031] The inlet cylinder 3 is arranged on the drive shaft 2 and is fitted in the conical cavity. The drive shaft 2 is adapted to be drivingly connected to the gas turbine rotor and the generator rotor. As Figure 1As shown, the drive shaft 2 extends along the left - right direction. The intake cylinder 3 can be arranged on the outer peripheral side of the drive shaft 2 and inserted into the conical cavity from the left side. The intake cylinder 3 can include a bearing box, an upper cylinder block, and a lower cylinder block. The bearing box is located between the upper cylinder block and the lower cylinder block.

[0032] The housing is sleeved on the outer peripheral side of the drive shaft 2. The housing includes a first shell (not shown) and a second shell 4. The first shell is located above the second shell 4. The housing is formed by the splicing of the first shell and the second shell 4. As Figure 1 shown, both the first shell and the second shell 4 can be semi - circular arc - shaped. The first shell is located above the second shell 4. The first shell and the second shell 4 can be spliced into a circular tube to form the housing. The drive shaft 2 passes through the housing, thus playing a protective role. The split design of the housing facilitates the installation and disassembly of the housing.

[0033] The foundation 5 is arranged below the drive shaft 2. As Figure 1 shown, the foundation 5 can be a concrete foundation. The foundation 5 is located below the drive shaft 2 and is arranged at an interval from the drive shaft 2. The intake volute 1 can be located on the right side of the foundation 5 and is arranged at an interval from the foundation 5.

[0034] The guide rail 6 is fixed on the foundation 5 and is located between the second shell 4 and the foundation 5. The guide rail 6 extends along the axial direction of the drive shaft 2 and extends into the conical cavity. The guide rail 6 is connected to the intake cylinder 3. Specifically, as Figure 1 and Figure 2 shown, the guide rail 6 can be fixed above the foundation 5 through the support column 9. Both ends of the support column 9 can be respectively connected and fixed to the foundation 5 and the guide rail 6 by bolts. It should be noted that multiple support columns 9 can be provided. The multiple support columns 9 are arranged at intervals along the front - back direction. The support column 9 can also be provided with only one. In this case, the support column 9 can be an I - beam and can extend along the front - back direction.

[0035] The guide rail 6 generally extends along the left - right direction. The right end of the guide rail 6 can extend into the conical cavity and be connected to the intake cylinder 3. For example, the right end of the guide rail 6 can be connected to the intake cylinder 3 through fasteners such as bolts. Thus, the situation of the right side of the guide rail 6 being suspended is avoided, and the support strength of the guide rail 6 is ensured.

[0036] The lifting device 7 is arranged on the guide rail 6 and can slide along the extension direction of the guide rail 6. The lifting device 7 is suitable for lifting the maintenance parts of the intake cylinder 3. Specifically, the lifting device 7 can be a crane. The lifting device 7 can be slidably assembled on the guide rail 6 in a guiding manner. Thus, the lifting device 7 can slide in the left - right direction, which facilitates the position switching of the lifting device 7.

[0037] The temporary platform 8 is suitable for being arranged on the second shell 4 after the first shell is removed. The temporary platform 8 is suitable for receiving the maintenance parts lifted by the lifting device 7. As Figure 1As shown, before installing the temporary platform 8, the first housing needs to be removed from the second housing 4 first. Thus, the space can be increased, and the situation where the maintenance components touch the first housing is avoided. The temporary platform 8 can be connected to the second housing 4 through fasteners such as bolts. In some other embodiments, the temporary platform 8 can also be placed on the second housing 4.

[0038] When the overhaul transfer system of the gas turbine inlet cylinder 3 according to the embodiment of the present invention is in use, the upper half of the inlet cylinder 3 can be removed first, and then the overhaul components of the inlet cylinder 3 can be lifted by the lifting device 7. Then, the lifting device 7 can be driven to move along the guide rail 6 and the overhaul components can be placed on the temporary platform 8, thus avoiding the situation where the intake volute 1 needs to be removed in the related art and also avoiding the situation where the entire housing needs to be removed, simplifying the overhaul process and improving the overhaul efficiency.

[0039] In addition, the second housing 4 can play a role in supporting the temporary platform 8, avoiding the situation where a support structure needs to be set when the temporary platform 8 is fixed to the foundation 5, thus simplifying the layout of the support structure of the temporary platform 8 and reducing the cost.

[0040] In some embodiments, the second housing 4 has an axial plane 12 that extends along the axis of the transmission shaft 2. The axial plane 12 is adapted to be in abutting contact with the first housing, and the temporary platform 8 is adapted to be disposed on the axial plane 12 after the first housing is removed.

[0041] Specifically, as Figure 2 shown, the second housing 4 can be semi-circular cylindrical, and the axial plane 12 is the axial plane of the second housing 4. The second housing 4 can have two axial planes 12. Both axial planes 12 are horizontally arranged and extend along the left-right direction. The two axial planes 12 are arranged in parallel and spaced apart in the front-back direction, and the temporary platform 8 can be placed on the two axial planes 12. The setting of the axial plane 12 facilitates the fitting and fixing of the first housing and the second housing 4 on the one hand, and also facilitates the horizontal placement of the temporary platform 8 on the other hand.

[0042] In some embodiments, the temporary platform 8 is detachably connected to the second housing 4. For example, flanges can be provided at the bottom of the temporary platform 8, and flanges can also be provided on the second housing 4. The temporary platform 8 can be detachably connected through the two flanges and corresponding fasteners.

[0043] In some embodiments, the housing includes a plurality of housing segments that are sequentially connected along the axis of the transmission shaft 2. The first housing includes a plurality of first sub-housings that are sequentially connected along the axis of the transmission shaft 2. The second housing 4 includes a plurality of second sub-housings 13 that are sequentially connected along the axis of the transmission shaft 2. The housing segments are formed by fitting the first sub-housings and the second sub-housings 13.

[0044] Specifically, the housing can be provided in sections and includes a plurality of housing sections. The plurality of housing sections can be sequentially arranged in the left-right direction, and adjacent housing sections are fixedly connected to each other. Each housing section can be formed by fitting together a first sub-housing and a second sub-housing 13. Thus, on the one hand, it facilitates the adjustment of the housing in the axial direction (left-right direction), and on the other hand, it also facilitates the disassembly and installation of the housing on both the upper and lower sides of the transmission shaft 2, making the use of the housing more flexible.

[0045] In some embodiments, the housing includes gaskets. The gaskets are clamped between adjacent housing sections, and the gaskets are adapted to adjust the axial length of the housing and correct the positions of the housing sections. Specifically, adjacent housing sections can be connected to each other through flanges. The gaskets can be clamped and fixed between the two connected housing sections. The adjustment of the position of the housing section in the left-right direction can be achieved by installing gaskets of different thicknesses or different numbers of gaskets, which plays a role in correcting the position of the housing section, thereby facilitating the assembly.

[0046] In some embodiments, adjacent housing sections are connected by flanges. The radial dimension of the flanges is larger than the radial dimension of the housing. The width dimension of the guide rail 6 is larger than the radial dimension of the flanges. Specifically, the guide rail 6 can be an integral body, that is, the guide rail 6 has a set width dimension in the front-back direction. The width dimension of the guide rail 6 should be larger than the maximum radial dimension of the housing, that is, the width dimension of the guide rail 6 is larger than the radial dimension of the flanges. Thus, the lifting device 7 can be assembled on the part of the guide rail 6 that extends beyond the housing, thereby avoiding the situation where the lifting device 7 touches and interferes with the housing when moving in the left-right direction.

[0047] In some embodiments, the lifting device 7 is a gantry crane. The gantry crane straddles the outer peripheral side of the housing. The gantry crane has a first column and a second column. The first column and the second column are slidably assembled with the guide rail 6 in a guiding manner. The housing is located between the first column and the second column. Specifically, the first column and the second column can be arranged in parallel and spaced apart in the front-back direction. The first column can be assembled with the front side of the guide rail 6 in a guiding manner, and the second column can be assembled with the rear side of the guide rail 6 in a guiding manner. Due to having two support points, the stability of the use of the lifting device 7 is improved, and the maintenance components can be appropriately adjusted in position in the front-back direction, facilitating the use.

[0048] In some embodiments, a plurality of support members are provided between the transmission shaft 2 and the foundation 5. The support members include a first section 10 and a second section 11. The first section 10 is supported between the transmission shaft 2 and the housing, and the second section 11 is supported between the housing and the foundation 5. The first section 10 and the second section 11 are coaxially arranged.

[0049] Specifically, as Figure 2As shown, the support member can be a rod-shaped member. The support member includes two sections, namely the first section 10 and the second section 11. The first section 10 can be arranged inside the housing. One end of the first section 10 can be rotatably connected to the transmission shaft 2. For example, a bearing can be provided at the end of the first section 10, and the transmission shaft 2 can pass through the bearing. A groove can also be provided on the first section 10, and the transmission shaft 2 is fitted in the groove. The other end of the first section 10 can be fixedly connected to the housing. For example, it can be welded to the housing or connected by fasteners.

[0050] The second section 11 can be arranged outside the housing. One end of the second section 11 can be fixedly connected to the housing, and the other end of the second section 11 can be fixedly connected to the foundation 5. The connection and fixation method can be welding or connection by fasteners.

[0051] In the up and down direction, the first section 10 and the second section 11 can be coaxially arranged, that is, the central axis of the first section 10 and the central axis of the second section 11 are collinear. Thus, the support of the transmission shaft 2 by the first section 10 and the second section 11 can be realized, and the interference between the support member and the housing can be avoided.

[0052] In addition, when the second housing 4 needs to be overhauled, the second section 11 can be removed, and then the second housing 4 can be rotated out by rotating the second housing 4, so as to simplify the disassembly process of the second housing 4.

[0053] In some embodiments, a trolley can be provided on the guide rail 6, and the suspension device can be fixed on the trolley. The position of the suspension device can be adjusted by moving the trolley.

[0054] The overhaul and transfer method of the gas turbine inlet cylinder 3 according to the embodiments of the present invention will be described below.

[0055] The overhaul and transfer method of the gas turbine inlet cylinder 3 according to the embodiments of the present invention includes the following steps:

[0056] S1: Remove the first housing, and then fix the temporary platform 8 on the second housing 4. Specifically, the first housing can be formed by splicing a plurality of first sub-housings. All the first sub-housings can be removed, or only a part of the first sub-housings can be removed. The second housing 4 can be formed by splicing a plurality of second sub-housings 13. After removal, the temporary platform 8 can be fixed on the second sub-housing 13 from which the first sub-housing is removed.

[0057] It should be noted that before removing the first housing, the inlet cylinder 3 can be first decoupled so that the overhaul components inside the inlet cylinder 3 can be exposed.

[0058] S2: Move the lifting device 7 towards the inlet cylinder 3, and use the lifting device 7 to lift the overhaul components of the inlet cylinder 3. As Figure 1As shown, the hoisting device 7 can be driven to move to the right, and then the hoisting device 7 can be used to hoist the maintenance component to a certain height, thereby avoiding the situation of touching the transmission shaft 2.

[0059] S3: Move the hoisting device 7 to one side of the temporary platform 8, and then place the maintenance component on the temporary platform 8. As Figure 1 shown, the temporary platform 8 can be driven to move to the left, and then the maintenance part suspended by the suspension device can be placed on the temporary platform 8.

[0060] S4: Move the maintenance component on the temporary platform 8 to the maintenance position and perform maintenance. The maintenance component on the temporary platform 8 can be hoisted to a dedicated maintenance position by a crane, and the maintenance of the maintenance component can be completed at the maintenance position.

[0061] S5: Repeat steps S2 to S4 until the maintenance of all maintenance components is completed.

[0062] In some embodiments, the maintenance transfer method of the gas turbine inlet cylinder 3 further includes the following steps:

[0063] S6: After the maintenance of the maintenance component is completed, place the maintenance component on the temporary platform 8. Thus, it is convenient to suspend the maintained maintenance component on the hoisting device 7.

[0064] S7: Use the hoisting device 7 to hoist the maintenance component on the temporary platform 8 to the inlet cylinder 3, and then complete the installation of the maintenance component. Thus, it is convenient for the reinstallation of the maintenance component.

[0065] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

[0066] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0067] In the present invention, unless otherwise clearly specified or limited, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication between two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0069] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0070] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A maintenance transfer system for a gas turbine inlet cylinder, characterized in that, it includes: An intake volute, in which a conical cavity is provided; A drive shaft and an inlet cylinder, the inlet cylinder is arranged on the drive shaft and fitted in the conical cavity, and the drive shaft is suitable for drivingly connecting a gas turbine rotor and a generator rotor; A housing, the housing is sleeved on the outer peripheral side of the drive shaft, the housing includes a first shell and a second shell, the first shell is located above the second shell, and the housing is formed by splicing the first shell and the second shell; A foundation, the foundation is arranged below the drive shaft; A guide rail, the guide rail is fixed on the foundation and located between the second shell and the foundation, the guide rail extends along the axial direction of the drive shaft and extends into the conical cavity, and the guide rail is connected to the inlet cylinder; A lifting device, the lifting device is arranged on the guide rail and can slide along the extending direction of the guide rail, and the lifting device is suitable for lifting the maintenance components of the inlet cylinder; A temporary platform, the temporary platform is suitable for being arranged on the second shell after the first shell is removed, and the temporary platform is suitable for receiving the maintenance components lifted by the lifting device.

2. The maintenance transfer system for a gas turbine inlet cylinder according to claim 1, characterized in that, The second shell has an axial surface, the axial surface extends along the axial direction of the drive shaft, the axial surface is suitable for being in abutting contact with the first shell, and the temporary platform is suitable for being arranged on the axial surface after the first shell is removed.

3. The maintenance transfer system for a gas turbine inlet cylinder according to claim 2, characterized in that, The temporary platform is detachably connected to the second shell.

4. The maintenance transfer system for a gas turbine inlet cylinder according to claim 1, characterized in that, The housing includes a plurality of shell segments, the plurality of shell segments are sequentially connected along the axial direction of the drive shaft, the first shell includes a plurality of first sub-shells, the plurality of first sub-shells are sequentially connected along the axial direction of the drive shaft, the second shell includes a plurality of second sub-shells, the plurality of second sub-shells are sequentially connected along the axial direction of the drive shaft, and the shell segments are formed by splicing the first sub-shells and the second sub-shells.

5. The maintenance transfer system for a gas turbine inlet cylinder according to claim 4, characterized in that, The housing includes a gasket, the gasket is clamped between two adjacent shell segments, and the gasket is suitable for adjusting the axial length of the housing and correcting the position of the shell segments.

6. The maintenance transfer system for a gas turbine inlet cylinder according to claim 4, characterized in that, Two adjacent shell segments are connected by a flange, the radial dimension of the flange is larger than the radial dimension of the housing, and the width dimension of the guide rail is larger than the radial dimension of the flange.

7. The maintenance transfer system for a gas turbine inlet cylinder according to claim 6, characterized in that, The lifting device is a gantry crane, the gantry crane straddles the outer peripheral side of the housing, the gantry crane has a first column and a second column, the first column and the second column are slidably assembled with the guide rail in a guiding manner, and the housing is located between the first column and the second column.

8. The gas turbine inlet cylinder overhaul transfer system according to any one of claims 1-7, characterized in that, a plurality of support members are provided between the transmission shaft and the foundation, the support members include a first section and a second section, the first section is supported between the transmission shaft and the housing, the second section is supported between the housing and the foundation, and the first section and the second section are coaxially arranged.

9. A gas turbine inlet cylinder overhaul transfer method based on the gas turbine inlet cylinder overhaul transfer system according to any one of claims 1-8, characterized in that, it includes the following steps: S1: Disassemble the first shell, and then fix the temporary platform on the second shell; S2: Move the lifting device towards the inlet cylinder side, and use the lifting device to lift the overhaul components of the inlet cylinder; S3: Move the lifting device towards the temporary platform side, and then place the overhaul components on the temporary platform; S4: Move the overhaul components on the temporary platform to the overhaul position and perform overhauls; S5: Repeat steps S2 to S4 until all the overhaul components are overhauled.

10. The gas turbine inlet cylinder overhaul transfer method according to claim 9, characterized in that, it further includes the following steps: S6: After the overhaul components are overhauled, place the overhaul components on the temporary platform; S7: Use the lifting device to lift the overhaul components on the temporary platform to the inlet cylinder, and then complete the installation of the overhaul components.

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