Disassembling tool for gas turbine coupling

Abstract

The invention relates to a disassembling tool for a gas turbine coupling. The disassembling tool comprises a top supporting disc, a hydraulic jack, a threaded connection jacking piece, a motor shaft clamp connecting pin, a motor shaft clamp and a bottom chuck. The hydraulic jack is placed on the top supporting disc; the threaded connection jacking piece is placed on the hydraulic jack; the motor shaft clamp connecting pin is placed on the motor shaft; the motor shaft clamp fixing column is provided with a motor shaft and a motor shaft clamp connecting pin; the bottom chuck comprises two semicircular chucks, semicircular holes are formed in the two semicircular chucks, the two semicircular holes form a circular hole, an annular protrusion is arranged on the inner wall of the circular hole, and the annular protrusion is embedded in a groove between the coupler and the motor shaft; the motor shaft clamp connecting pin is in threaded connection with the threaded connection ejection piece; the top supporting disc and the bottom clamping disc are fixedly connected through a screw rod. According to the disassembling device, the motor shaft and the coupler can be disassembled only by providing pressure through the hydraulic jack, and the disassembling efficiency is high.

Description

Technical Field

[0001] This application relates to the field of gas turbine coupling disassembly technology, and in particular to a disassembly tooling for gas turbine couplings. Background Technology

[0002] The coupling in a gas turbine is a key component connecting the gas turbine rotor and the generator rotor. Its main function is to efficiently and reliably transmit enormous rotational torque. It not only ensures that power can be smoothly delivered from the gas turbine to the generator, realizing the conversion of mechanical energy into electrical energy, but also effectively compensates for the small axial, radial, and angular displacements between the two shafts caused by thermal expansion, installation errors, and foundation deformation.

[0003] In actual production processes, the assembly, testing, and maintenance of couplings often require frequent disassembly. Because the coupling and motor shaft are fitted with an interference fit, disassembly is difficult, and in the past, manual disassembly was commonly used. This method often damages the coupling, has low efficiency, and risks damaging the contact surfaces between the motor shaft and the coupling, potentially rendering the motor shaft unusable.

[0004] Therefore, we propose a disassembly fixture for gas turbine couplings. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides a disassembly fixture for gas turbine couplings, which can disassemble the motor shaft and coupling by simply applying pressure with a hydraulic jack, resulting in high disassembly efficiency.

[0006] The technical solution adopted in this application is as follows: A disassembly fixture for a gas turbine coupling, wherein the coupling and the motor shaft are interference-fitted, and a groove is provided between the coupling and the motor shaft; the disassembly fixture includes: The top support plate has through holes; The hydraulic jack is placed on the top support plate and has a hollow hole. The threaded connection top piece is placed on the hydraulic jack, and the bottom of the threaded connection top piece passes through the hollow hole of the hydraulic jack and the through hole of the top support plate. The motor shaft clamp connecting pin is placed on the motor shaft; Motor shaft clamp, fixing post motor shaft and motor shaft clamp connecting pin; The bottom clamping plate includes two semi-circular clamping plates, each of which is provided with a semi-circular hole. The two semi-circular holes form a circular hole. The inner wall of the circular hole is provided with an annular protrusion, which is embedded in the groove between the coupling and the motor shaft. The two semi-circular clamping plates are fixed by bolts. The motor shaft clamping pin is threadedly connected to the threaded top piece; the top support plate and the bottom clamping plate are fixedly connected by screws.

[0007] Its further features are: The threaded connection top piece is T-shaped, and the motor shaft clamp connecting pin is inverted T-shaped.

[0008] The bottom of the threaded connection top piece is provided with an internal threaded hole, and the top of the motor shaft clamp connecting pin is provided with an external thread that matches the internal threaded hole.

[0009] The motor shaft clamp includes two semi-cylindrical clamps, which are fixed together by bolts. The top of each semi-cylindrical clamp has a through hole, and the inside of each semi-cylindrical clamp has a clamping cavity. The through hole communicates with the clamping cavity.

[0010] The semi-cylindrical clamp has multiple grooves in its clamping slot, and washers are placed in the grooves to prevent damage to the motor shaft during clamping.

[0011] The screw is fixedly connected to the top support plate and the bottom clamping plate by a fixing nut.

[0012] The screw is provided in three parts, and the top support plate and the bottom clamping plate are each provided with three openings for connecting the screw.

[0013] The beneficial effects of this application are as follows: This application features a compact and reasonable structure, and is easy to operate. The hydraulic jack is placed on the top support plate, and the threaded connecting top piece is placed on the hydraulic jack. The motor shaft clamping pin is placed on the motor shaft. The two semi-cylindrical clamps of the motor shaft clamp hold the motor shaft and the motor shaft clamping pin, and are secured with bolts to fix the two semi-cylindrical clamps, thus fixing the motor shaft. Then, the motor shaft clamping pin is threadedly connected to the threaded connecting top piece. The annular protrusions on the two semi-circular clamps of the bottom clamp clamp the groove between the coupling and the motor shaft, and are secured with bolts. The screw is fixedly connected to the top support plate and the bottom clamp via fixing nuts. The hydraulic jack extends, and one end of the hydraulic jack drives the motor shaft to move through the threaded connecting top piece, the motor shaft clamping pin, and the motor shaft clamp. The other end of the hydraulic jack drives the coupling to move through the top support plate, the screw, and the bottom clamp. The motor shaft and the coupling move in opposite directions, allowing for quick separation of the motor shaft and the coupling using the hydraulic jack. The motor shaft and coupling can be disassembled using only hydraulic jacks to provide pressure, resulting in high disassembly efficiency.

[0014] In addition, this application also has the following advantages: (1) The stability and safety of the disassembly tool are improved by the screw and fixing nut between the top support plate and the bottom clamping plate.

[0015] (2) The disassembly force is distributed on each component of the gas turbine coupling disassembly fixture, which effectively avoids damage to the motor shaft during disassembly and reduces the loss rate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this application.

[0017] Figure 2 This is a cross-sectional schematic diagram of this application.

[0018] Figure 3 This is a schematic diagram of the gas turbine coupling and motor shaft of this application.

[0019] The components include: 1. Threaded top connector; 2. Hydraulic jack; 3. Top support plate; 4. Motor shaft clamp; 5. Fixing nut; 6. Screw; 7. Bottom clamp; 8. Motor shaft clamp connecting pin; 9. Coupling; 10. Motor shaft. Detailed Implementation

[0020] The specific embodiments of this application are described below with reference to the accompanying drawings.

[0021] like Figures 1-3 As shown, a disassembly fixture for a gas turbine coupling includes a threaded connection top piece 1, a hydraulic jack 2, a top support plate 3, a motor shaft clamp 4, a fixing nut 5, a screw 6, a bottom clamp 7, and a motor shaft clamp connecting pin 8.

[0022] The hydraulic jack 2 is placed on the top support plate 3. The hydraulic jack 2 is provided with a hollow hole. The threaded connecting top piece 1 is placed on the hydraulic jack 2. The top support plate 3 is provided with a through hole.

[0023] The threaded connection top piece 1 is T-shaped. The bottom of the threaded connection top piece 1 passes through the hollow hole of the hydraulic jack 2 and the through hole of the top support plate 3, and is provided with an internal threaded hole.

[0024] The motor shaft clamp connecting pin 8 is inverted T-shaped, and the top of the motor shaft clamp connecting pin 8 is provided with an external thread that matches the internal thread hole of the threaded connection top piece 1.

[0025] The motor shaft clamp 4 includes two semi-cylindrical clamps, which are fixed together by bolts. Each semi-cylindrical clamp has a through hole at its top and a clamping cavity inside, with the through hole communicating with the clamping cavity.

[0026] In one embodiment, the semi-cylindrical clamp has multiple grooves in its clamping slot, and washers are provided in the grooves to prevent damage to the motor shaft 10 when clamping it.

[0027] Multiple screws 6 are fixed on the top support plate 3, and the other end of the screws 6 is fixedly connected to the bottom clamping plate 7.

[0028] In one embodiment, the screw 6 is fixedly connected to the top support plate 3 and the bottom clamping plate 7 by a fixing nut 5.

[0029] The bottom clamp 7 includes two semi-circular clamps, which are fixed by bolts. A semi-circular hole is provided in the middle of the semi-circular clamps. The semi-circular holes of the two semi-circular clamps form a circular hole. The inner wall of the circular hole is provided with an annular protrusion, which is fixed to the coupling 9 and the motor shaft 10 through the groove between the annular protrusion and the groove.

[0030] In one embodiment, three screws 6 are provided, and the top support plate 3 and the bottom clamping plate 7 are each provided with three openings for connecting the screws 6.

[0031] The coupling 9 and the motor shaft 10 are interference-fitted, and there is a groove between the coupling 9 and the motor shaft 10.

[0032] In practical use, the hydraulic jack 2 is placed on the top support plate 3, the threaded connecting top piece 1 is placed on the hydraulic jack 2, the motor shaft clamping pin 8 is placed on the motor shaft 10, and the two semi-cylindrical clamps of the motor shaft clamp 4 clamp the motor shaft 10 and the motor shaft clamping pin 8. The two semi-cylindrical clamps are fixed with bolts to fix the motor shaft 10. Then, the motor shaft clamping pin 8 is threadedly connected to the threaded connecting top piece 1. The annular protrusions on the two semi-circular clamps of the bottom clamp 7 clamp the groove between the coupling 9 and the motor shaft 10, and the two semi-circular clamps are fixed with bolts. The screw 6 is fixedly connected to the top support plate 3 and the bottom clamping plate 7 respectively by the fixing nut 5. The hydraulic jack 2 extends out, and one end of the hydraulic jack 2 drives the motor shaft 10 to move through the threaded connection of the top piece 1, the motor shaft clamping pin 8 and the motor shaft clamping plate 4. The other end of the hydraulic jack 2 drives the coupling 9 to move through the top support plate 3, the screw 6 and the bottom clamping plate 7. The motor shaft 10 and the coupling 9 move in opposite directions. The hydraulic jack 2 can quickly separate the motor shaft 10 and the coupling 9. The disassembly of the motor shaft 10 and the coupling 9 can be completed by providing pressure only by the hydraulic jack 2, which is highly efficient.

[0033] The screw 6 and fixing nut 5 between the top support plate 3 and the bottom clamping plate 7 improve the stability and safety of the disassembly tooling.

[0034] The disassembly force is distributed across the components of the gas turbine coupling disassembly fixture, effectively preventing damage to the motor shaft 10 during disassembly and reducing the wear rate.

[0035] The above description is an explanation of this application and not a limitation thereof. The scope of this application is defined by the claims. Within the scope of protection of this application, any form of modification may be made.

Claims

1. A disassembly fixture for a gas turbine coupling, wherein the coupling (9) and the motor shaft (10) are interference-fitted, and a groove is provided between the coupling (9) and the motor shaft (10), characterized in that, Disassembly fixtures include: The top support plate (3) is provided with a through hole; A hydraulic jack (2) is placed on a top support plate (3), and the hydraulic jack (2) is provided with a hollow hole; The threaded connection top piece (1) is placed on the hydraulic jack (2), and the bottom of the threaded connection top piece (1) passes through the hollow hole of the hydraulic jack (2) and the through hole of the top support plate (3); The motor shaft clamp connecting pin (8) is placed on the motor shaft (10); Motor shaft clamp (4), fixed column motor shaft (10) and motor shaft clamp connecting pin (8); The bottom clamp (7) includes two semi-circular clamps, each with a semi-circular hole. The two semi-circular holes form a circular hole. The inner wall of the circular hole is provided with an annular protrusion. The annular protrusion is embedded in the groove between the coupling (9) and the motor shaft (10). The two semi-circular clamps are fixed by bolts. Among them, the motor shaft clamp connecting pin (8) is threadedly connected to the threaded connecting top piece (1); the top support plate (3) and the bottom clamp plate (7) are fixedly connected by screws (6).

2. The disassembly fixture for gas turbine couplings as described in claim 1, characterized in that: The threaded connection top piece (1) is T-shaped, and the motor shaft clamp connecting pin (8) is inverted T-shaped.

3. The disassembly fixture for gas turbine couplings as described in claim 2, characterized in that: The bottom of the threaded connection top piece (1) is provided with an internal threaded hole, and the top of the motor shaft clamp connecting pin (8) is provided with an external thread that matches the internal threaded hole.

4. The disassembly fixture for gas turbine couplings as described in claim 1, characterized in that: The motor shaft clamp (4) includes two semi-cylindrical clamps, which are fixed by bolts. The top of the semi-cylindrical clamps is provided with a through hole, and a clamping cavity is provided inside the semi-cylindrical clamps. The through hole communicates with the clamping cavity.

5. The disassembly fixture for gas turbine couplings as described in claim 4, characterized in that: The semi-cylindrical clamp has multiple grooves in its clamping slot, and washers are provided in the grooves to prevent damage to the motor shaft (10) during clamping.

6. The disassembly fixture for gas turbine couplings as described in claim 1, characterized in that: The screw (6) is fixedly connected to the top support plate (3) and the bottom clamp plate (7) by a fixing nut (5).

7. The disassembly fixture for gas turbine couplings as described in claim 1, characterized in that: The screw (6) is provided in three parts, and the top support plate (3) and the bottom clamping plate (7) are each provided with three openings for connecting the screw (6).

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