Support for overhauling steam turbine rotor

Abstract

The support for overhauling the steam turbine rotor comprises a working table and a base, a through groove is formed in the working table, a plurality of grooves are formed in the positions, located on the circumferential side of the through groove, of the working table, screw rods are rotationally arranged in the positions, located in the grooves, of the working table, and moving blocks are in threaded connection with the screw rods. One ends of the multiple screws penetrate through the workbench and are provided with hand wheels, clamping plates are fixedly arranged on the multiple moving blocks, supporting blocks are fixedly arranged on the multiple clamping plates, clamping assemblies are arranged on the multiple supporting blocks, a supporting cylinder is fixedly arranged at the position, located at the through groove, of the bottom of the workbench, and a supporting ring is fixedly arranged at the bottom end of the supporting cylinder. A rotating groove matched with the supporting ring is formed in the base, and a motor is fixedly arranged on the base. The motor drives the gear to rotate, the gear drives the gear ring and the supporting cylinder to rotate, then the workbench and the steam turbine rotor are driven to rotate, the steam turbine rotor rotates by a certain angle, the direction of the steam turbine rotor is adjusted, and comprehensive detection is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbine repair, and in particular relates to a bracket for repairing a steam turbine rotor. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. 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. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power plants. The rotor refers to a rotating body supported by bearings. When it is rigidly connected or with an additional shaft, it can be regarded as a rotor. It is one of the main parts of a steam turbine in a power plant. The main rotor rotates at high speed, and when its speed approaches the critical speed, the shaft will bend and deform. Therefore, power plant staff need to use maintenance equipment to fix the rotor and perform maintenance on a regular basis.

[0003] When the existing power plant steam turbine rotor maintenance equipment is in use, the installation position of the clamping plate used to fix the rotor is fixed, so that the angle of the clamping plate cannot be adjusted. When the device is placed at a specified position, it is not convenient to drive the rotor to rotate and adjust through the clamping plate, so the maintenance is more troublesome and the applicability is poor. Utility Model Content

[0004] In view of the problem that the angle of the clamping plate cannot be adjusted, it is inconvenient to drive the rotor to rotate and adjust by the clamping plate when the device is placed at a specified position, maintenance is troublesome, and applicability is poor, the utility model provides a bracket for repairing a steam turbine rotor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a bracket for repairing a steam turbine rotor, comprising a workbench and a base, the workbench is provided with a through slot, the workbench is provided with a plurality of grooves around the through slot, the workbench is provided with screws rotatably arranged in the plurality of grooves, a plurality of the screws are threadedly connected with moving blocks, one end of a plurality of the screws passes through the workbench and is provided with a handwheel, a plurality of the moving blocks are fixedly provided with a clamping plate, a plurality of the clamping plates are fixedly provided with a supporting block, a plurality of the supporting blocks are provided with a clamping assembly, a supporting cylinder is fixedly provided at the bottom of the workbench at the through slot, a supporting ring is fixedly provided at the bottom end of the supporting cylinder, a rotating groove matched with the supporting ring is provided on the base, a motor is fixedly provided on the base, and a transmission assembly for driving the supporting cylinder to rotate is provided at the output end of the motor.

[0006] Preferably, the plurality of moving blocks are all slidably fitted with the inner wall of the groove.

[0007] Preferably, the surfaces of the plurality of clamping plates are all provided with anti-slip pads.

[0008] Preferably, the clamping assembly includes a movable column, a spring, a clamping block and a connecting plate. The movable column and the spring are both provided in pairs. The two movable columns are arranged through the support block. The two springs are arranged outside the two movable columns. The clamping block and the connecting plate are both fixed to the two movable columns.

[0009] Preferably, the transmission assembly includes a gear and a gear ring, the gear is fixed to the output end of the motor, the gear ring is fixedly arranged on the outer wall of the support tube, and the gear and the gear ring are meshingly connected.

[0010] Preferably, a plurality of balls are arranged at the bottom of the support ring, and the plurality of balls are in contact with the rotating groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. By setting clamping plates and clamping blocks and rotating multiple hand wheels, multiple screws are driven to rotate, thereby driving multiple moving blocks and clamping plates to move. The steam turbine rotor is clamped and fixed by multiple clamping plates. Through the restoring force of two springs, two movable columns and clamping blocks are driven to clamp the outside of the steam turbine rotor, thereby improving the stability of the steam turbine rotor during the detection process.

[0013] 2. By setting up the support cylinder, the motor drives the gear to rotate, the gear drives the gear ring and the support cylinder to rotate, and then drives the workbench and the turbine rotor to rotate, so that the turbine rotor rotates a certain angle, adjusts the position of the turbine rotor, and facilitates comprehensive inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic structural diagram of the overall cross-section of the utility model;

[0016] Figure 3 It is a structural schematic diagram of part of the utility model.

[0017] In the figure: 1. workbench; 2. base; 3. screw; 4. moving block; 5. hand wheel; 6. clamping plate; 7. support block; 8. through groove; 9. support cylinder; 10. support ring; 11. rotating groove; 12. motor; 13. anti-slip pad; 14. movable column; 15. spring; 16. clamping block; 17. connecting plate; 18. gear; 19. gear ring; 20. ball bearing. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] Reference Figure 1-3 A support for repairing a steam turbine rotor comprises a workbench 1 and a base 2, a through slot 8 is provided on the workbench 1, a plurality of grooves are provided on the side of the through slot 8, a screw rod 3 is rotatably provided in each of the plurality of grooves of the workbench 1, a moving block 4 is threadedly connected to each of the plurality of screw rods 3, one end of each of the plurality of screw rods 3 passes through the workbench 1 and is provided with a hand wheel 5, and a clamping plate 6 is fixedly provided on each of the plurality of moving blocks 4;

[0020] The plurality of moving blocks 4 are all slidably fitted with the inner wall of the groove, and the surfaces of the plurality of clamping plates 6 are all provided with anti-slip pads 13 .

[0021] Specifically, the steam turbine rotor to be repaired is placed on the workbench 1, and the bottom end of the rotor is passed through the through slot 8. Then, by rotating multiple hand wheels 5, multiple screws 3 are driven to rotate, and then multiple moving blocks 4 and clamps 6 are driven to move. The steam turbine rotor is clamped and fixed by multiple clamps 6, and the clamping stability is improved by providing an anti-slip pad 13.

[0022] Furthermore, a plurality of clamps 6 are fixedly provided with support blocks 7, and a clamping assembly is provided on the plurality of support blocks 7. The clamping assembly includes a movable column 14, a spring 15, a clamping block 16 and a connecting plate 17. Two movable columns 14 and two springs 15 are provided. The two movable columns 14 are penetrated through the support blocks 7, and the two springs 15 are sleeved outside the two movable columns 14. The clamping block 16 and the connecting plate 17 are fixed to the two movable columns 14.

[0023] Specifically, through the restoring force of the two springs 15, the two movable columns 14 and the clamping block 16 are driven to clamp the outer side of the steam turbine rotor, thereby improving the stability of the steam turbine rotor during the detection process.

[0024] Furthermore, a support tube 9 is fixedly provided at the through groove 8 at the bottom of the workbench 1, a support ring 10 is fixedly provided at the bottom of the support tube 9, a rotating groove 11 adapted to the support ring 10 is opened on the base 2, a motor 12 is fixedly provided on the base 2, and a transmission assembly for driving the support tube 9 to rotate is provided at the output end of the motor 12, and the transmission assembly includes a gear 18 and a ring gear 19, the gear 18 is fixed to the output end of the motor 12, the ring gear 19 is fixedly provided on the outer wall of the support tube 9, and the gear 18 and the ring gear 19 are meshingly connected.

[0025] Specifically, the motor 12 drives the gear 18 to rotate, and the gear 18 drives the gear ring 19 and the support tube 9 to rotate, thereby driving the workbench 1 and the turbine rotor to rotate, adjusting the azimuth angle of the turbine rotor to facilitate comprehensive testing.

[0026] In addition, a plurality of balls 20 are arranged at the bottom of the support ring 10, and the plurality of balls 20 are all in contact with the rotation groove 11. By providing a plurality of balls 20 for support, the support ring 10 can be rotated more easily.

[0027] The operating principle of the utility model is described as follows: the steam turbine rotor to be repaired is placed on the workbench 1, and the bottom end of the rotor passes through the through slot 8. Then, by turning multiple hand wheels 5, multiple screws 3 are driven to rotate, and then multiple moving blocks 4 and clamps 6 are driven to move. The steam turbine rotor is clamped and fixed by multiple clamps 6. Through the restoring force of two springs 15, two movable columns 14 and clamps 16 are driven to clamp the outer side of the steam turbine rotor, thereby improving the stability of the steam turbine rotor during the inspection process. During the inspection, the gear 18 is driven to rotate by the motor 12, and the gear 18 drives the gear ring 19 and the support tube 9 to rotate, thereby driving the workbench 1 and the steam turbine rotor to rotate, so that the steam turbine rotor rotates a certain angle, and the orientation of the steam turbine rotor is adjusted to facilitate comprehensive inspection.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A support for repairing a steam turbine rotor, comprising a workbench (1) and a base (2); Features: The workbench (1) is provided with a through groove (8), and the workbench (1) is provided with a plurality of grooves around the through groove (8); The workbench (1) is provided with a plurality of screw rods (3) rotatably disposed in a plurality of grooves, a plurality of the screw rods (3) are threadedly connected with a moving block (4), one end of a plurality of the screw rods (3) passes through the workbench (1) and is provided with a hand wheel (5), a plurality of the moving blocks (4) are fixedly provided with a clamping plate (6), a plurality of the clamping plates (6) are fixedly provided with a supporting block (7), and a plurality of the supporting blocks (7) are provided with a clamping assembly; A support cylinder (9) is fixedly arranged at the bottom of the workbench (1) at the through groove (8), a support ring (10) is fixedly arranged at the bottom end of the support cylinder (9), and a rotation groove (11) adapted to the support ring (10) is opened on the base (2); A motor (12) is fixedly mounted on the base (2); The output end of the motor (12) is provided with a transmission assembly for driving the support cylinder (9) to rotate.

2. A support for repairing a steam turbine rotor according to claim 1, characterized in that: The plurality of moving blocks (4) are all slidably fitted with the inner wall of the groove.

3. The support for repairing a steam turbine rotor according to claim 1, characterized in that: Anti-slip pads (13) are provided on the surfaces of the plurality of clamping plates (6).

4. The support for repairing a steam turbine rotor according to claim 1, characterized in that: The clamping assembly comprises a movable column (14), a spring (15), a clamping block (16) and a connecting plate (17). The movable column (14) and the spring (15) are both provided with two, the two movable columns (14) are provided through the support block (7), the two springs (15) are sleeved outside the two movable columns (14), and the clamping block (16) and the connecting plate (17) are both fixed to the two movable columns (14).

5. The support for repairing a steam turbine rotor according to claim 1, characterized in that: The transmission assembly comprises a gear (18) and a gear ring (19); the gear (18) is fixed to the output end of the motor (12); the gear ring (19) is fixedly arranged on the outer wall of the support tube (9); and the gear (18) and the gear ring (19) are meshingly connected.

6. The support for repairing a steam turbine rotor according to claim 1, characterized in that: A plurality of rolling balls (20) are arranged at the bottom of the support ring (10), and the plurality of rolling balls (20) are all in contact with the rotating groove (11).

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