Micro gas turbine rotating shaft separation tool

Abstract

The utility model discloses a micro gas turbine rotating shaft separation tool, which generally comprises a force bearing plate, a Z-shaped pressing plate, a semi-annular gasket and a hydraulic jack, and in order to ensure that a motor rotating shaft and a turbine rotating shaft are stably separated and the force application positions are symmetrical, the number of each part of the tool is two. The stress area of the end face of the rotating shaft is effectively increased through the structure extending out of the tool, the jacking force of a hydraulic jack can be borne, under the condition that force is applied to the two sides of the rotating shaft at the same time, the pre-tightening force generated by interference fit of a coupler and the rotating shaft can be overcome, and therefore the rotating shaft is separated.

Description

Technical Field

[0001] The utility model relates to a micro gas turbine shaft separation tool, in particular to a separation tool for a shaft that is interference-fitted with a coupling in a micro gas turbine, which can avoid damage to the shaft and the coupling caused by violent disassembly. Background Art

[0002] Common micro gas turbine generator rotor system structures such as Figure 2 As shown, the motor shaft 5 and turbine shaft 6 are connected via a coupling 7. The connecting section, in a cylindrical structure, utilizes elastic deformation to create an interference fit between the coupling and the shaft, resulting in excellent transmission stability, high load-bearing capacity, and good centering. However, during use, disassembly and maintenance of the shafts is difficult. Furthermore, the actual structure has a small load-bearing area, limiting the area available for applying a pull-off force, making separation of the coupling from the shaft even more difficult. Utility Model Content

[0003] The main purpose of the utility model is to provide a micro gas turbine shaft separation tool, which makes full use of the structure of the coupling, can safely and reliably separate the motor shaft together with the coupling from the turbine shaft, and ensures that the components are not damaged.

[0004] The utility model can be realized through the following technical solutions:

[0005] A micro gas turbine shaft separation tooling comprises: a load-bearing plate, a Z-shaped pressure plate, a semi-annular gasket, and a hydraulic jack. Each of the above parts is in pairs. Two Z-shaped pressure plates are symmetrically mounted on the middle section of the coupling. The semi-annular gasket is placed between the Z-shaped pressure plate and the motor end of the coupling. The two load-bearing plates are placed on the machine body. Two hydraulic jacks are stably placed on the load-bearing plates. The same load is slowly applied to the two jacks at the same time, so that the motor shaft, together with the coupling, is separated from the turbine shaft through the two Z-shaped pressure plates.

[0006] Furthermore, the Z-shaped pressure plate adopts a Z-shaped structural design to expand the bearing area of ​​the coupling end face.

[0007] Furthermore, the connecting surface of the Z-shaped pressure plate is a cylindrical long groove, the size of which fits the diameter of the middle section of the coupling. After the two Z-shaped pressure plates are connected to each other, they wrap around the middle section of the coupling.

[0008] Furthermore, four M5 through holes are respectively opened on the left and right sides of the Z-shaped pressure plate connection surface, and the two pressure plates are connected by M5 bolt fasteners.

[0009] Furthermore, the inner circle size of the two semi-annular gaskets matches the diameter of the middle section of the coupling, and they are combined into a complete gasket and placed between the Z-shaped pressure plate and the clutch motor end.

[0010] Furthermore, the two bearing plates are fan-shaped and symmetrically placed on the lower body.

[0011] Furthermore, the two hydraulic jacks are claw-type jacks, and the claw-shaped lifting parts are in contact with the bearing surface of the Z-shaped pressure plate.

[0012] Furthermore, the lift of the hydraulic jack covers the distance between the Z-shaped pressure plate bearing surface and the bearing plate.

[0013] Beneficial effects

[0014] The separation tool of the utility model is adopted to avoid the turbine shaft and the coupling from being damaged during the separation process, and the disassembly tool is easy to operate, so that the separation process is standardized and safe, and the operation risk is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the separation tooling of the utility model;

[0016] Figure 2 This is a schematic diagram of a common micro gas turbine generator rotor system;

[0017] Figure 3 This is a schematic diagram of the practical Z-shaped pressure plate;

[0018] Figure 4 This is a schematic diagram of the single-side assembly of the practical separation tooling;

[0019] In the figure: 1, Z-shaped pressure plate; 11, connecting surface; 12, cylindrical long groove; 13, through hole; 14, load-bearing surface; 2, semi-annular gasket; 3, hydraulic jack; 31, claw-shaped lifting part; 4, load-bearing plate; 5, motor shaft; 6, turbine shaft; 7, coupling; 71, middle section of coupling; 8, base. DETAILED DESCRIPTION

[0020] The specific implementation method of the utility model is further described below with reference to the figures:

[0021] like Figure 1 , 2, 3 and 4, a micro gas turbine shaft separation tooling of the utility model generally includes: a Z-shaped pressure plate 1, a semi-annular gasket 2, a hydraulic jack 3, a bearing plate 4. In order to ensure the smooth separation of the motor shaft 5 and the turbine shaft 6, the number of each component of the tooling is two.

[0022] See Figure 3The purpose of designing the Z-shaped pressure plate 1 is to expand the bearing area of ​​the end face of the coupling 7. The Z-shaped structure is adopted to make the strength able to withstand the lifting force of the jack 3. A cylindrical long groove 12 is made on the connecting surface 11, and the size is matched with the diameter of the middle section 71 of the coupling. There are four through holes 13 on each side. The two Z-shaped pressure plates 1 are relatively connected into a whole by bolt fasteners, so that the workpiece is sleeved on the middle section 71 of the coupling.

[0023] In order to prevent the Z-shaped pressure plate 1 from causing wear on the lower end surface of the coupling 7, two semi-annular gaskets 2 are designed to be combined into a complete gasket and placed between the Z-shaped pressure plate 1 and the motor end of the coupling 7. The inner circle size of the gasket 2 is consistent with the diameter of the middle section 71 of the coupling.

[0024] In order to overcome the interference fit between the coupling 7 and the turbine shaft 6, a hydraulic jack 3 is used to provide axial thrust. A claw-type jack is used, and the claw-shaped lifting part 31 can fit with the bearing surface 14 of the Z-shaped pressure plate to prevent it from separating from the workpiece when pressure is applied, causing a safety hazard. Since the turbine shaft 6 is tightly connected to the micro-gas turbine-related structure at its bottom, it can be temporarily treated as a whole and become the supporting base 8 of the tooling. And because the micro-gas turbine body is irregular in shape, to ensure that the jack 3 is placed on a horizontal plane and the force direction is parallel to the axial direction of the shaft, two fan-shaped bearing plates 4 are placed on the base 8. In addition, the hydraulic jack 3 has a lift that covers the distance between the bearing surface 14 of the Z-shaped pressure plate 1 and the bearing plate 4, which can effectively separate the motor shaft 5 and the coupling 7 from the turbine shaft 6.

[0025] The use of this separation tool can prevent the turbine shaft 6 and the coupling 7 from being damaged during the separation process. In addition, the disassembly tool is easy to operate, making the separation process standardized and safe, and effectively reducing operational risks.

Claims

1. A micro gas turbine shaft separation tool, characterized in that: include: The load-bearing plate, Z-shaped pressure plate, semi-annular gasket, and hydraulic jack are each in pairs. The two Z-shaped pressure plates are symmetrically installed in the middle section of the coupling. The semi-annular gasket is placed between the Z-shaped pressure plate and the motor end of the coupling. The two load-bearing plates are placed on the machine body. The two hydraulic jacks are placed stably on the load-bearing plates. The same load is slowly applied to the two jacks at the same time, so that the motor shaft, the coupling, and the turbine shaft are separated through the two Z-shaped pressure plates.

2. The separation tool according to claim 1, characterized in that: The Z-shaped pressure plate adopts a Z-shaped structural design to expand the bearing area of ​​the coupling end face.

3. The separation tool according to claim 1, characterized in that: The connecting surface of the Z-shaped pressure plate is a cylindrical long groove, the size of which is consistent with the diameter of the middle section of the coupling. After the two Z-shaped pressure plates are connected to each other, they wrap the middle section of the coupling.

4. The separation tool according to claim 3, characterized in that: There are four M5 through holes on the left and right sides of the Z-shaped pressure plate connection surface, and the two pressure plates are connected by M5 bolt fasteners.

5. The separation tool according to claim 1, characterized in that: The inner circle size of the two semi-annular gaskets matches the diameter of the middle section of the coupling, and they are combined into a complete gasket and placed between the Z-shaped pressure plate and the clutch motor end.

6. The separation tool according to claim 1, characterized in that: The two load-bearing plates are fan-shaped and symmetrically placed on the lower body.

7. The separation tool according to claim 1, characterized in that: The two hydraulic jacks are claw-type jacks, and the claw-shaped lifting parts are in contact with the bearing surface of the Z-shaped pressure plate.

8. The separation tool according to claim 6, characterized in that: The lift of the hydraulic jack covers the distance between the Z-shaped pressure plate bearing surface and the bearing plate.

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