Damping base of steam turbine for power generation

Abstract

The utility model relates to a damping base of a steam turbine for power generation, and belongs to the field of steam turbines, the damping base comprises a bottom plate, a plurality of lifting tables, damping units and a lifting supporting mechanism, the lifting tables are arranged on the bottom plate in an array mode, the height of the lifting tables is adjustable, and the damping units are detachably arranged on the lifting tables and used for supporting the steam turbine and absorbing vibration of the steam turbine; the multiple lifting supporting mechanisms are arranged on the bottom plate and used for supporting the steam turbine through lifting. The steam turbine damping base has the advantages that the steam turbine does not need to be hoisted, maintenance of the damping unit can be completed in a targeted mode, and the problem that maintenance of the steam turbine damping base wastes time and labor is effectively solved.

Description

Technical Field

[0001] The present application relates to the field of steam turbines, and in particular to a shock-absorbing base of a steam turbine for power generation. Background Art

[0002] Steam turbine, also known as steam turbine engine, is a rotary steam power device. It is the main equipment of modern thermal power plants and is also used in metallurgical industry, chemical industry and ship power devices. High-temperature and high-pressure steam passes through a fixed nozzle and becomes an accelerated airflow, which is then sprayed onto the blades, causing the rotor with blade rows to rotate and perform work externally. When the steam turbine is working, it will produce strong vibrations under the action of airflow and rotor rotation, which greatly affects the stability and reliability of the steam turbine operation.

[0003] At present, a shock-absorbing base is usually used to support the steam turbine to reduce the impact of vibration generated during the operation of the steam turbine on the equipment. The existing shock-absorbing base is usually an integral one-piece structure, and the shock-absorbing element is usually made of rubber, shock-absorbing springs, etc. After long-term use, the shock-absorbing element will age, resulting in reduced shock-absorbing effect, and the shock-absorbing element needs to be replaced. However, since the shock-absorbing base is an integral one-piece structure, when replacing it, it is necessary to remove the steam turbine from the shock-absorbing base, lift the steam turbine, and then perform overall maintenance or replacement of the shock-absorbing base. The entire maintenance process is very time-consuming and labor-intensive. Utility Model Content

[0004] In order to improve the problem of time-consuming and labor-intensive maintenance of a shock-absorbing base of a steam turbine, the present application provides a shock-absorbing base of a steam turbine for power generation.

[0005] The shock-absorbing base of a steam turbine for power generation provided in the present application adopts the following technical solution:

[0006] A shock-absorbing base for a steam turbine for power generation, comprising a base plate, a lifting platform, a shock-absorbing unit and a lifting support mechanism, wherein a plurality of the lifting platforms are arranged in an array on the base plate, and the height of the lifting platforms can be raised or lowered; the shock-absorbing unit is detachably arranged on the lifting platform and is used to support the steam turbine and absorb the vibration of the steam turbine; and a plurality of the lifting support mechanisms are arranged on the base plate and are used to support the steam turbine by lifting or lowering.

[0007] By adopting the above technical scheme, multiple shock-absorbing units support the steam turbine and absorb the vibration of the steam turbine to meet the shock-absorbing requirements of the steam turbine. When one of the shock-absorbing units is damaged and needs maintenance, the staff supports the steam turbine by raising the lifting support mechanism at the damaged shock-absorbing unit, and then controls the lifting platform supporting the damaged shock-absorbing unit to descend, so that the damaged shock-absorbing unit can be removed for repair, and then the repaired or replaced shock-absorbing unit can be reinstalled on the lifting platform, and the lifting platform is controlled to rise so that the shock-absorbing unit supports the steam turbine again, and finally the lifting support mechanism is controlled to descend. The maintenance of the shock-absorbing unit can be completed in a targeted manner without hoisting the steam turbine, which effectively improves the time-consuming and labor-intensive problem of maintaining the shock-absorbing base of the steam turbine.

[0008] Optionally, the lifting platform includes a support seat, a wedge block, a driving member and a positioning assembly, the support seat is slidably set on the base plate in the vertical direction, the wedge block is slidably set on the base plate in the direction toward the support seat and abuts against the support seat, the side of the wedge block abutting against the support seat is inclined, the driving member is set on the base and is used to drive the wedge block to slide, and the positioning assembly is set on the support seat and is used to position the shock absorbing unit on the support seat.

[0009] By adopting the above technical solution, the staff drives the wedge block to move towards the support seat through the driving member, so that the higher position of the inclined side of the wedge block abuts against the support seat, and the support seat can be moved up. The staff drives the wedge block to move away from the support seat through the driving member, so that the lower position of the inclined side of the wedge block abuts against the support seat, and the support seat can be moved down, which effectively improves the convenience of the staff in adjusting the height of the lifting platform.

[0010] Optionally, the driving member includes a bolt, which is rotatably disposed on the base plate and threadedly connected to the wedge block.

[0011] By adopting the above technical solution, the staff can rotate the bolt to move the wedge block toward the support seat, which is convenient for the staff to drive the wedge block to slide toward the support seat.

[0012] Optionally, the positioning assembly includes a positioning plate, a clamping plate and a screw rod, the positioning plate is arranged on a support seat, the clamping plate is slidably arranged on the support seat in a direction toward the positioning plate, the positioning plate and the clamping plate are respectively located on both sides of the shock absorbing unit, and the screw rod is rotatably arranged on the support seat and threadedly connected to the clamping plate.

[0013] By adopting the above technical solution, the staff places the shock absorbing unit on the support seat so that the splint and the positioning plate are respectively located on both sides of the shock absorbing unit, and then rotates the screw rod to move the splint toward the direction close to the positioning plate. The splint can press the shock absorbing unit against the positioning plate, thereby improving the stability of the shock absorbing unit on the support seat, and the splint and the positioning plate can also locate the position of the shock absorbing unit on the support seat, thereby improving the accuracy of the shock absorbing unit on the support seat.

[0014] Optionally, the lifting support mechanism includes a support sleeve, a support rod and a control assembly, the support sleeve is arranged on the base plate, the support rod is slidably inserted in the support sleeve and is used to abut against the bottom of the turbine, and the control assembly is arranged on the support sleeve and is used to control the support rod to slide in the support sleeve.

[0015] By adopting the above technical solution, the staff can drive the support rod to slide in the support sleeve through the control component, so that the support rod can be raised to support the steam turbine or the support rod can be moved away from the steam turbine, which is convenient for the staff to support the steam turbine according to needs.

[0016] Optionally, the control assembly includes a screw and an operating part, wherein the screw is rotatably disposed on the inner bottom wall of the support sleeve and is threadedly connected to the support rod, and the operating part is disposed on the support sleeve and is used to drive the screw to rotate.

[0017] By adopting the above technical solution, the staff can drive the screw rod to rotate through the operating part, so that the support rod can be moved away from the support sleeve or towards the support sleeve, which is convenient for the staff to control the height of the support rod.

[0018] Optionally, the operating part includes a worm wheel and a worm, the worm wheel is coaxially arranged on the screw, and the worm is rotatably arranged on the support sleeve and meshes with the worm wheel.

[0019] By adopting the above technical solution, the staff rotates the worm, the worm drives the worm wheel to rotate, and the worm wheel drives the screw to rotate. The self-locking mechanism of the worm wheel and worm can effectively improve the stability of the screw.

[0020] Optionally, the shock absorbing unit comprises a rubber shock isolation support, which is arranged on the support seat and is used to abut against the bottom of the steam turbine.

[0021] By adopting the above technical solution, the steam turbine is supported by rubber seismic isolation bearings. When the steam turbine vibrates, the rubber seismic isolation bearings absorb part of the energy through the high elasticity and high damping characteristics of rubber, and consume part of the energy through internal friction of the rubber, thereby absorbing the vibration of the steam turbine.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The maintenance of the shock absorbing unit can be completed in a targeted manner without hoisting the steam turbine, effectively improving the time-consuming and labor-intensive maintenance of the shock absorbing base of the steam turbine;

[0024] 2. The splint can press the shock absorbing unit against the positioning plate to improve the stability of the shock absorbing unit on the support seat, and the splint and the positioning plate can also position the shock absorbing unit on the support seat to improve the accuracy of the shock absorbing unit on the support seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a shock-absorbing base of a steam turbine for power generation according to an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the structure of the lifting platform of an embodiment of the present application.

[0027] Figure 3 It is a structural schematic diagram of the lifting support mechanism of an embodiment of the present application (the support sleeve is partially cut away in the figure).

[0028] Attached figures: 1. Base plate; 2. Lifting platform; 21. Support seat; 22. Wedge block; 23. Driving member; 231. Bolt; 24. Positioning assembly; 241. Positioning plate; 242. Clamp; 243. Screw; 3. Shock-absorbing unit; 4. Lifting support mechanism; 41. Support sleeve; 42. Support rod; 43. Control assembly; 431. Screw; 432. Operating unit; 4321. Worm gear; 4322. Worm; 5. Guide cylinder. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] The embodiment of the present application discloses a shock-absorbing base of a steam turbine for power generation.

[0031] Reference Figure 1 The shock-absorbing base of the steam turbine for power generation includes a base plate 1, a lifting platform 2, a shock-absorbing unit 3 and a lifting support mechanism 4.

[0032] Reference Figure 1 , Figure 2, a plurality of lifting platforms 2 are installed in an array on the bottom plate 1. In the present embodiment, six lifting platforms 2 are installed in a rectangular array on the bottom plate 1. The height of the lifting platform 2 can be raised or lowered. The lifting platform 2 includes a support seat 21, a wedge block 22, a driving member 23 and a positioning assembly 24. The support seat 21 is slidably installed on the bottom plate 1 along the vertical direction. In the present embodiment, a guide cylinder 5 is installed on the bottom plate 1 along the vertical direction. The support seat 21 is slidably installed on the inner wall of the guide cylinder 5. The wedge block 22 is slidably installed on the bottom plate 1 in the direction of the support seat 21. The diameter of the wedge block 22 gradually decreases from the direction away from the support seat 21 to the direction close to the support seat 21. The wedge-shaped support seat 21 and the bottom of the wedge block 22 are also inclined; the driving member 23 is installed on the base, and the driving member 23 is used to drive the wedge block 22 to slide toward the support seat 21. The driving member 23 includes a bolt 231, and the bolt 231 is rotatably installed on the base toward the sliding direction of the wedge block 22, and the bolt 231 is threadedly connected to the wedge block 22; the shock absorbing unit 3 is installed on the support seat 21, and the shock absorbing unit 3 is used to support the steam turbine and absorb the vibration of the steam turbine. The shock absorbing unit 3 includes a rubber shock isolation bearing, which is installed on the support seat 21 and is used to abut against the bottom of the steam turbine.

[0033] The staff places the six rubber seismic isolation bearings on the six support seats 21 in a one-to-one correspondence, and then hoists the steam turbine onto the six rubber seismic isolation bearings. The six rubber seismic isolation bearings can support the steam turbine. When the steam turbine is working, the rubber seismic isolation bearings absorb part of the energy of the turbine vibration through the high elasticity and high damping characteristics of rubber, and consume part of the energy through the internal friction of the rubber, thereby absorbing the vibration of the steam turbine. In addition, the staff can also rotate the bolt 231 to move the wedge block 22 toward the direction close to the support seat 21, and the higher position of the inclined side of the wedge block 22 abuts against the support seat 21, so that the support seat 21 is raised, or rotate the bolt 231 in the opposite direction to move the wedge block 22 toward the direction away from the support seat 21, and the lower position of the inclined side of the wedge block 22 abuts against the support seat 21, so that the support seat 21 is lowered, and then the height of the support seat 21 is adjusted, so that the height of the rubber seismic isolation bearing can be adjusted conveniently and quickly, thereby improving the applicability of the rubber seismic isolation bearing to support steam turbines at different heights.

[0034] Reference Figure 2 The positioning assembly 24 is installed on the support seat 21. The positioning assembly 24 is used to position the shock absorbing unit 3 on the support seat 21. The positioning assembly 24 includes a positioning plate 241, a clamping plate 242 and a screw rod 243. The positioning plate 241 is installed on the support seat 21, and the clamping plate 242 is slidably installed on the positioning plate 241 in the direction of the positioning plate 241. In this embodiment, the positioning plate 241 and the clamping plate 242 are both arc-shaped and adapted to the outer periphery of the rubber seismic isolation bearing. The screw rod 243 is rotatably installed on the support seat 21, and the screw rod 243 is threadedly connected to the clamping plate 242.

[0035] The staff places the rubber seismic isolation bearing on the support seat 21 so that the positioning plate 241 and the clamping plate 242 are respectively located on both sides of the rubber seismic isolation bearing, and then rotates the screw rod 243 to move the clamping plate 242 toward the direction close to the positioning plate 241. The clamping plate 242 can press the rubber seismic isolation bearing against the positioning plate 241, and position the rubber seismic isolation bearing on the support seat 21, thereby effectively improving the stability of the rubber seismic isolation bearing on the support seat 21. In the process of the clamping plate 242 pressing the rubber seismic isolation bearing against the positioning plate 241, the position of the rubber seismic isolation bearing on the support seat 21 can be adjusted, thereby improving the accuracy of the rubber seismic isolation bearing on the support seat 21.

[0036] Reference Figure 1 , Figure 3 , six lifting support mechanisms 4 are installed on the bottom plate 1, and the six lifting support structures are respectively located at six lifting platforms 2. The lifting support mechanism 4 is used to support the steam turbine by lifting. The lifting support mechanism 4 includes a support sleeve 41, a support rod 42 and a control component 43. The support sleeve 41 is installed on the bottom plate 1. The support sleeve 41 is hollow inside and open at the top. The support rod 42 is slidably inserted on the inner wall of the support sleeve 41. In this embodiment, a rubber disc is installed at one end of the support rod 42 away from the support sleeve 41 to enhance the stability of the support rod 42 when it abuts against the bottom of the steam turbine; the control component 43 is installed on the support sleeve 41, and the control component 43 is used to control the support rod 42 in the support sleeve 41 along the length direction of the support sleeve 41 The control assembly 43 includes a screw 431 and an operating part 432. The screw 431 is rotatably mounted on the inner bottom wall of the support sleeve 41. The screw 431 is threadedly penetrated into the support rod 42. The operating part 432 is mounted on the support sleeve 41. The operating part 432 is used to drive the screw 431 to rotate. The operating part 432 includes a worm wheel 4321 and a worm 4322. The worm wheel 4321 is coaxially mounted on the screw 431. The worm 4322 is rotatably mounted on the support sleeve 41. The worm 4322 extends to the inside of the support sleeve 41 and meshes with the worm wheel 4321. In the present embodiment, a rocker arm is coaxially mounted on one end of the worm 4322 outside the support sleeve 41 to facilitate the staff to drive the worm 4322 to rotate.

[0037] The implementation principle of the shock-absorbing base of a steam turbine for power generation in the embodiment of the present application is as follows: when one of the rubber seismic isolation bearings on the bottom plate 1 is damaged and needs maintenance, the staff rotates the worm 4322 on the support sleeve 41 at the damaged rubber seismic isolation bearing, and the worm 4322 drives the worm wheel 4321 to rotate, and the worm wheel 4321 drives the screw 431 to rotate, so that the support rod 42 moves away from the support sleeve 41, and the support rod 42 rises to abut against the bottom of the steam turbine, so as to support the steam turbine conveniently and quickly, and through the self-locking mechanism of the worm wheel 4321 and the worm 4322, while the staff can conveniently drive the screw 431 to rotate, the stability of the adjusted screw 431 can also be improved; then the staff rotates the bolt 231 to move the wedge block 22 away from the support seat 21, so that the support The seat 21 moves down, and the rubber seismic isolation bearing no longer supports the steam turbine. The staff then rotates the screw 243 to make the clamping plate 242 move away from the positioning plate 241, and the rubber seismic isolation bearing can be removed from the support seat 21 for repair or replacement. Finally, the staff places the repaired or replaced rubber seismic isolation bearing on the support seat 21, rotates the screw 243 to make the clamping plate 242 press the rubber seismic isolation bearing against the positioning plate 241, and then rotates the screw 431 to make the support seat 21 drive the rubber seismic isolation bearing to rise and support the steam turbine, and rotates the worm 4322 to move the support rod 42 down, and the replacement of the rubber seismic isolation bearing can be completed. There is no need to hoist the steam turbine or disassemble the entire shock-absorbing base. The rubber seismic isolation bearing can be maintained in a targeted manner, which effectively improves the time-consuming and labor-intensive problem of maintaining the shock-absorbing base of the steam turbine.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A shock-absorbing base for a steam turbine for power generation, characterized in that: The invention comprises a base plate (1), a lifting platform (2), a shock absorbing unit (3) and a lifting support mechanism (4); a plurality of the lifting platforms (2) are arranged in an array on the base plate (1); the height of the lifting platforms (2) can be raised or lowered; the shock absorbing unit (3) is detachably arranged on the lifting platform (2) and is used to support a steam turbine and absorb vibration of the steam turbine; and a plurality of the lifting support mechanisms (4) are arranged on the base plate (1) and are used to support the steam turbine by lifting or lowering.

2. A shock-absorbing base for a steam turbine for power generation according to claim 1, characterized in that: The lifting platform (2) comprises a support seat (21), a wedge block (22), a driving member (23) and a positioning assembly (24); the support seat (21) is slidably arranged on the bottom plate (1) along a vertical direction; the wedge block (22) is slidably arranged on the bottom plate (1) along a direction toward the support seat (21) and abuts against the support seat (21); a side of the wedge block (22) abutting against the support seat (21) is inclined; the driving member (23) is arranged on the base and is used to drive the wedge block (22) to slide; and the positioning assembly (24) is arranged on the support seat (21) and is used to position the shock absorbing unit (3) on the support seat (21).

3. A shock-absorbing base for a steam turbine for power generation according to claim 2, characterized in that: The driving member (23) comprises a bolt (231), wherein the bolt (231) is rotatably disposed on the base plate (1) and is threadably connected to the wedge block (22).

4. The shock-absorbing base of a steam turbine for power generation according to claim 2, characterized in that: The positioning assembly (24) comprises a positioning plate (241), a clamping plate (242) and a screw rod (243); the positioning plate (241) is arranged on the support seat (21); the clamping plate (242) is slidably arranged on the support seat (21) in a direction toward the positioning plate (241); the positioning plate (241) and the clamping plate (242) are respectively located on two sides of the shock absorbing unit (3); and the screw rod (243) is rotatably arranged on the support seat (21) and is threadedly connected to the clamping plate (242).

5. The shock-absorbing base of a steam turbine for power generation according to claim 1, characterized in that: The lifting support mechanism (4) comprises a support sleeve (41), a support rod (42) and a control assembly (43); the support sleeve (41) is arranged on the bottom plate (1); the support rod (42) is slidably inserted in the support sleeve (41) and is used to abut against the bottom of the steam turbine; and the control assembly (43) is arranged on the support sleeve (41) and is used to control the support rod (42) to slide in the support sleeve (41).

6. A shock-absorbing base for a steam turbine for power generation according to claim 5, characterized in that: The control assembly (43) comprises a screw rod (431) and an operating portion (432); the screw rod (431) is rotatably disposed on the inner bottom wall of the support sleeve (41) and is threadedly connected to the support rod (42); and the operating portion (432) is disposed on the support sleeve (41) and is used to drive the screw rod (431) to rotate.

7. A shock-absorbing base for a steam turbine for power generation according to claim 6, characterized in that: The operating portion (432) comprises a worm wheel (4321) and a worm (4322); the worm wheel (4321) is coaxially arranged on the screw (431); and the worm (4322) is rotatably arranged on the support sleeve (41) and meshes with the worm wheel (4321).

8. The shock-absorbing base of a steam turbine for power generation according to claim 2, characterized in that: The shock absorbing unit (3) comprises a rubber shock isolation support, which is arranged on a support seat (21) and is used to abut against the bottom of the steam turbine.

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