Steam turbine stator partition plate air seal cleaning and repairing equipment

Abstract

The utility model relates to the technical field of steam turbines, in particular to steam turbine stator partition plate air seal cleaning and repairing equipment, which not only can clean and repair a partition plate and prolong the service life of the partition plate, but also can conveniently drive the partition plate to load and unload materials, omit the carrying of workers and improve the working efficiency. Comprising a fixing mechanism; the device further comprises a trolley, a moving mechanism, a cleaning mechanism, a blowing mechanism and a repairing mechanism, the trolley is installed on the fixing mechanism and drives the partition plate to move, the moving mechanism is installed on the fixing mechanism and drives related devices to move, and the cleaning mechanism is installed on the moving mechanism and cleans the partition plate. The blowing mechanism is mounted on the cleaning mechanism and is used for blow-drying the partition plate; and the repairing mechanism is mounted on the moving mechanism and is used for repairing and straightening the partition plate.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a cleaning and repairing device for the stator diaphragm air seal of a steam turbine. Background Technique

[0002] The stator diaphragm air seal of a steam turbine, also known as a diaphragm steam seal, is a device used in a steam turbine to reduce or prevent steam leakage. It is installed at the gap between the inner hole of the diaphragm and the main shaft to limit inter-stage air leakage and reduce air leakage before and after the diaphragm.

[0003] Existing cleaning and repairing devices for the stator diaphragm air seal of a steam turbine, such as a centralized cleaning device for steam turbine diaphragms and bolt parts disclosed in the utility model patent with the application number 202223171879.5, mainly include a cleaning tank. An anti-slip and water-permeable pad is laid in the cleaning tank, and a water drain hole is provided at the middle position of the cleaning tank. The water drain hole is connected to the sewer through a water pipe. When in use, household dishwashing liquid is used in combination with the high-pressure water flow sprayed by the spray gun of a high-pressure car washer to clean the diaphragm and high-temperature fastening bolts. After cleaning, compressed air is used to quickly dry the cleaned parts.

[0004] However, most of the existing devices can only clean it, it is difficult to detect and repair the wear degree of the diaphragm, and most of them still require manual handling of the diaphragm during cleaning and repair, which is time-consuming and laborious. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a cleaning and repairing device for the stator diaphragm air seal of a steam turbine, which can not only clean and repair the diaphragm, extend the service life of the diaphragm, but also facilitate the loading and unloading of the diaphragm, eliminate the need for workers to carry it, and improve work efficiency.

[0006] A cleaning and repairing device for the stator diaphragm air seal of a steam turbine of the utility model includes a fixing mechanism; it also includes a trolley, a moving mechanism, a cleaning mechanism, a purging mechanism and a repairing mechanism. The trolley is installed on the fixing mechanism and drives the diaphragm to move. The moving mechanism is installed on the fixing mechanism and drives the relevant devices to move. The cleaning mechanism is installed on the moving mechanism and cleans the diaphragm. The purging mechanism is installed on the cleaning mechanism and dries the diaphragm. The repairing mechanism is installed on the moving mechanism and repairs and straightens the diaphragm. The trolley fixes the diaphragm, then the trolley is pushed into the fixing mechanism, and the fixing mechanism jacks up and fixes the trolley. The cleaning mechanism is started, and the cleaning mechanism cleans the diaphragm. The moving mechanism drives the cleaning mechanism to move conveniently to clean the diaphragm comprehensively. After cleaning, the purging mechanism dries the diaphragm to accelerate the water stains on the diaphragm to fall off. Then the purging mechanism lowers to straighten the diaphragm comb teeth. After that, the fixing mechanism drives the trolley to facilitate the staff to push the trolley out.

[0007] Preferably, the fixing mechanism includes a ramp, a baffle, a drain pipe, four hydraulic cylinders I, four sealing rings, and four top plates. The bottom end of the ramp is connected to the ground, the bottom end of the baffle is connected to the top end of the ramp, the drain pipe is installed on the baffle, the bottom ends of the four hydraulic cylinders I are connected to the top end of the ramp, the four sealing rings are respectively sleeved at the joints of the four hydraulic cylinders I and the ramp, and the bottom ends of the four top plates are connected to the top ends of the four sealing rings. By setting the ramp, it is convenient for the trolley to enter the ramp and for the cleaning water to be discharged through the drain pipe. By setting the baffle, the splashing of the cleaning water is prevented. After the trolley moves above the four top plates, start the four hydraulic cylinders I to lift the four top plates and the trolley, so that the trolley leaves the ramp, improving the stability of the trolley. By setting the four sealing rings, the hydraulic cylinders I are prevented from being soaked by the cleaning water, prolonging the service life of the hydraulic cylinders I.

[0008] Preferably, the trolley includes a vehicle body, a push rod, a driving device, two sets of wheels, four cylinders, and two sets of clamping plates. The bottom end of the vehicle body is provided with meshes, the push rod is installed on the vehicle body, the top end of the driving device is connected to the bottom end of the vehicle body, the two sets of wheels are rotatably installed on the driving device, the four cylinders are installed on the vehicle body in pairs opposite to each other, and the clamping plates are installed at the top ends of the two cylinders on the same side. The staff hoists the partition onto the vehicle body, starts the four cylinders, pushes the two sets of clamping plates to approach and clamp the partition, and then the staff pushes the vehicle body through the push rod. At the same time, the driving device drives the two sets of wheels to rotate, and the staff pushes the vehicle body onto the ramp, facilitating the four top plates to lift the vehicle body.

[0009] Preferably, the moving mechanism includes a motor I, two sets of speed reducers I, a transmission shaft, two sets of reciprocating lead screws, and a slider. The motor I is installed on the baffle, the two sets of speed reducers I are installed on the baffle, the drain pipe is rotatably installed between the two sets of speed reducers I, the two sets of reciprocating lead screws are rotatably installed on the baffle and are longitudinally connected to the two sets of speed reducers I respectively, and the slider is slidably installed on the two sets of reciprocating lead screws. Start the motor I, the motor I drives the connected speed reducer I, the speed reducer I drives the other set of speed reducer I to work through the transmission shaft, the two sets of speed reducers I drive the two sets of reciprocating lead screws to rotate, and the two sets of reciprocating lead screws drive the slider to move left and right.

[0010] Preferably, the cleaning mechanism includes a motor II, a speed reducer II, a water pump, a suction pipe, a water delivery hose, and multiple spray heads. The motor II is installed on the baffle, the speed reducer II is installed on the baffle, the water pump is installed on the baffle, the suction pipe is installed on the water pump, the water delivery hose is installed on the water pump, and the multiple spray heads are all installed on the slider and are internally connected to the water delivery hose. The suction pipe is connected to the water source. Start the motor II, the motor II drives the water pump to pump water through the speed reducer II, the water pump conveys the water in the suction pipe to the multiple spray heads through the water delivery hose, and the multiple spray heads move left and right following the slider to clean the partition.

[0011] Preferably, the purging mechanism includes an air pump, an air delivery pipe, a diffuser hopper, and multiple groups of wind deflectors. The air pump is installed on the baffle, the air delivery pipe is installed on the air pump, the diffuser hopper is installed on the baffle and is internally connected to the air delivery pipe, and multiple groups of wind deflectors are rotatably installed on the diffuser hopper; the second reducer drives the air pump to deliver air, the air pump transports air into the diffuser hopper through the air delivery pipe, and the airflow is guided by multiple groups of wind deflectors, so that the air in the diffuser hopper purges the water stains on the partition board.

[0012] Preferably, the repair mechanism includes a support plate, two groups of brackets, two groups of hydraulic cylinders II, a connecting seat, and a straightening roller. The top end of the support plate is connected to the bottom end of the slider, two groups of brackets are installed on the support plate, two groups of hydraulic cylinders II are respectively installed on the two groups of brackets and the top ends of the two groups of hydraulic cylinders II are both connected to the bottom end of the slider, the top end of the connecting seat is connected to the bottom ends of the two groups of hydraulic cylinders II, and the straightening roller is rotatably installed on the connecting seat; after the partition board is dried, the slider drives the support plate to move left and right, and the two groups of hydraulic cylinders II push the connecting seat downward, so that the straightening roller contacts the partition board, and the straightening roller rotates to straighten the comb teeth of the partition board.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the trolley fixes the partition board, then the trolley is pushed into the fixing mechanism, the fixing mechanism jacks up and fixes the trolley, the cleaning mechanism is started, the cleaning mechanism cleans the partition board, the moving mechanism drives the cleaning mechanism to move, which is convenient for comprehensively cleaning the partition board. After the cleaning is completed, the purging mechanism dries the partition board to accelerate the falling of the water stains on the partition board, and then the purging mechanism lowers to straighten the comb teeth of the partition board. After that, the fixing mechanism drives the trolley, which is convenient for the staff to push the trolley out. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an axonometric structural schematic diagram of the present utility model;

[0015] Figure 2 is a partial enlarged left-view sectional structural schematic diagram of the fixing mechanism and the trolley of the present utility model;

[0016] Figure 3 is a partial enlarged sectional axonometric structural schematic diagram of the moving mechanism, the purging mechanism, and the repair mechanism of the present utility model;

[0017] Figure 4 is a sectional axonometric structural schematic diagram of the cleaning mechanism and the purging mechanism of the present utility model.

[0018] Reference numerals in the drawings: 01, fixing mechanism; 11, ramp; 12, baffle; 13, drain pipe; 14, first hydraulic cylinder; 15, sealing ring; 16, top plate; 02, trolley; 21, vehicle body; 22, push rod; 23, driving device; 24, wheel; 25, cylinder; 26, clamping plate; 03, moving mechanism; 31, first motor; 32, first reducer; 33, transmission shaft; 34, reciprocating lead screw; 35, slider; 04, cleaning mechanism; 41, second motor; 42, second reducer; 43, water pump; 44, water suction pipe; 45, water delivery hose; 46, spray head; 05, purging mechanism; 51, air pump; 52, air delivery pipe; 53, air diffuser; 54, wind shield strip; 06, repair mechanism; 61, support plate; 62, bracket; 63, second hydraulic cylinder; 64, connecting seat; 65, straightening roller. Detailed implementation mode

[0019] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention is more thorough and comprehensive.

[0020] Embodiment 1

[0021] A steam turbine stator diaphragm air seal cleaning and repair device of the utility model includes a fixing mechanism 01; it also includes a trolley 02, a moving mechanism 03, a cleaning mechanism 04, a purging mechanism 05 and a repair mechanism 06. The trolley 02 is installed on the fixing mechanism 01 and drives the diaphragm to move. The moving mechanism 03 is installed on the fixing mechanism 01 and drives the relevant devices to move. The cleaning mechanism 04 is installed on the moving mechanism 03 and cleans the diaphragm. The purging mechanism 05 is installed on the cleaning mechanism 04 and dries the diaphragm. The repair mechanism 06 is installed on the moving mechanism 03 and repairs and straightens the diaphragm. The fixing mechanism 01 includes a ramp 11, a baffle 12, a drain pipe 13, four hydraulic cylinders 14, four sealing rings 15 and four top plates 16. The bottom end of the ramp 11 is connected to the ground. The bottom end of the baffle 12 is connected to the top end of the ramp 11. The drain pipe 13 is installed on the baffle 12. The bottom ends of the four hydraulic cylinders 14 are connected to the top end of the ramp 11. The four sealing rings 15 are respectively sleeved at the joints of the four hydraulic cylinders 14 and the ramp 11. The bottom ends of the four top plates 16 are connected to the top ends of the four sealing rings 15. The trolley 02 includes a vehicle body 21, a push rod 22, a driving device 23, two sets of wheels 24, four cylinders 25 and two sets of clamping plates 26. The bottom end of the vehicle body 21 is provided with meshes. The push rod 22 is installed on the vehicle body 21. The top end of the driving device 23 is connected to the bottom end of the vehicle body 21. The two sets of wheels 24 are rotatably installed on the driving device 23. The four cylinders 25 are installed on the vehicle body 21 in pairs opposite to each other. The clamping plates 26 are installed at the top ends of the two cylinders 25 on the same side. The moving mechanism 03 includes a motor 31, two sets of speed reducers 32, a transmission shaft 33, two sets of reciprocating lead screws 34 and sliders 35. The motor 31 is installed on the baffle 12. The two sets of speed reducers 32 are installed on the baffle 12. The drain pipe 13 is rotatably installed between the two sets of speed reducers 32. The two sets of reciprocating lead screws 34 are rotatably installed on the baffle 12 and are longitudinally connected to the two sets of speed reducers 32 respectively. The sliders 35 are slidably installed on the two sets of reciprocating lead screws 34. The cleaning mechanism 04 includes a motor 41, a speed reducer 42, a water pump 43, a water suction pipe 44, a water delivery hose 45 and multiple nozzles 46. The motor 41 is installed on the baffle 12. The speed reducer 42 is installed on the baffle 12. The water pump 43 is installed on the baffle 12. The water suction pipe 44 is installed on the water pump 43. The water delivery hose 45 is installed on the water pump 43. The multiple nozzles 46 are all installed on the sliders 35 and are internally communicated with the water delivery hose 45. The repair mechanism 06 includes a support plate 61, two sets of brackets 62, two sets of hydraulic cylinders 63, a connecting seat 64 and a correction roller 65. The top end of the support plate 61 is connected to the bottom end of the slider 35. The two sets of brackets 62 are both installed on the support plate 61. The two sets of hydraulic cylinders 63 are respectively installed on the two sets of brackets 62 and the top ends of the two sets of hydraulic cylinders 63 are both connected to the bottom end of the slider 35. The top end of the connecting seat 64 is connected to the bottom ends of the two sets of hydraulic cylinders 63. The correction roller 65 is rotatably installed on the connecting seat 64;When it is working, first, the staff hoists the partition board onto the vehicle body 21, starts the four groups of cylinders 25, pushes the two groups of clamping plates 26 closer to clamp the partition board, and then the staff pushes the vehicle body 21 through the push rod 22. At the same time, the driving device 23 drives the two groups of wheels 24 to rotate. The staff pushes the vehicle body 21 onto the slope 11, starts the four groups of hydraulic cylinders 14 to lift the four groups of top plates 16 and the trolley 02, so that the trolley 02 leaves the slope 11, improving the stability of the trolley 02. By setting the four groups of sealing rings 15, it is prevented that the cleaning water soaks the hydraulic cylinder 14, extending the service life of the hydraulic cylinder 14. The water suction pipe 44 is communicated with the water source. Start the motor 41, and the motor 41 drives the water pump 43 to pump water through the reducer 42. The water pump 43 conveys the water in the water suction pipe 44 to the multiple groups of nozzles 46 through the water delivery hose 45. The multiple groups of nozzles 46 clean the partition board. Start the motor 31, the motor 31 drives the connected reducer 31, and the reducer 31 drives another group of reducer 32 to work through the transmission shaft 33. The two groups of reducers 31 drive the two groups of reciprocating lead screws 34 to rotate. The two groups of reciprocating lead screws 34 drive the slider 35 to move left and right. The slider 35 drives the multiple groups of nozzles 46 to move left and right to clean the partition board. After the blowing mechanism 05 dries the partition board, the slider 35 drives the support plate 61 to move left and right. The two groups of hydraulic cylinders 63 push the connecting seat 64 downward, so that the straightening roller 65 contacts the partition board. The straightening roller 65 rotates to straighten the comb teeth of the partition board. By setting the slope 11, it is convenient for the trolley 02 to enter the slope 11 and for the cleaning water to be discharged through the drain pipe 13. By setting the baffle 12, it is prevented that the cleaning water splashes.

[0022] Embodiment 2

[0023] Such as Figures 1 to 4As shown in the figure, a steam turbine stator diaphragm air seal cleaning and repair device of the present utility model is based on Embodiment 1; the blowing mechanism 05 includes an air pump 51, an air delivery pipe 52, a diffuser 53 and multiple groups of wind blocking strips 54. The air pump 51 is installed on the baffle 12, the air delivery pipe 52 is installed on the air pump 51, the diffuser 53 is installed on the baffle 12 and is internally communicated with the air delivery pipe 52, and multiple groups of wind blocking strips 54 are all rotatably installed on the diffuser 53; when it works, first, the staff hoists the diaphragm onto the vehicle body 21, starts the four cylinders 25, pushes the two clamping plates 26 to approach and clamp the diaphragm, then the staff pushes the vehicle body 21 through the push rod 22, and at the same time the driving device 23 drives the two wheels 24 to rotate. The staff pushes the vehicle body 21 onto the slope 11, starts the four hydraulic cylinders 14 to lift the four top plates 16 and the trolley 02, so that the trolley 02 leaves the slope 11, improving the stability of the trolley 02. By setting the four sealing rings 15, it is prevented that the cleaning water soaks the hydraulic cylinder 14, prolonging the service life of the hydraulic cylinder 14. The water suction pipe 44 is communicated with the water source, the motor 41 is started, and the motor 41 drives the water pump 43 to pump water through the speed reducer 42. The water pump 43 conveys the water in the water suction pipe 44 to multiple nozzles 46 through the water delivery hose 45, and the multiple nozzles 46 clean the diaphragm. The motor 31 is started, the motor 31 drives the connected speed reducer 32, the speed reducer 32 drives another speed reducer 32 to work through the transmission shaft 33, the two speed reducers 32 drive the two reciprocating lead screws 34 to rotate, the two reciprocating lead screws 34 drive the slider 35 to move left and right, and the slider 35 drives the multiple nozzles 46 to move left and right to clean the diaphragm. After that, the speed reducer 42 drives the air pump 51 to deliver air, the air pump 51 conveys the air into the diffuser 53 through the air delivery pipe 52, and the air flow is guided by the multiple groups of wind blocking strips 54, so that the air in the diffuser 53 blows the water stains on the diaphragm. After the diaphragm is dried, the slider 35 drives the support plate 61 to move left and right, and the two hydraulic cylinders 63 push the connecting seat 64 downward, so that the straightening roller 65 contacts the diaphragm, and the straightening roller 65 rotates to straighten the comb teeth of the diaphragm. By setting the slope 11, it is convenient for the trolley 02 to enter the slope 11 and for the cleaning water to be discharged through the drain pipe 13. By setting the baffle 12, it is prevented that the cleaning water splashes.

[0024] The motor 31, speed reducer 32, motor 41, speed reducer 42, water pump 43 and air pump 51 of the present utility model are purchased on the market. Those skilled in the art only need to install and operate according to the attached operation manuals, without the need for those skilled in the art to make creative efforts.

[0025] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A steam turbine stator diaphragm gas seal cleaning and repairing device, comprising a fixing mechanism (01); characterized in that: The invention also comprises a trolley (02), a moving mechanism (03), a cleaning mechanism (04), a purging mechanism (05) and a repairing mechanism (06); the trolley (02) is mounted on the fixing mechanism (01) and drives the partition to move; the moving mechanism (03) is mounted on the fixing mechanism (01) and drives the related devices to move; the cleaning mechanism (04) is mounted on the moving mechanism (03) and cleans the partition; the purging mechanism (05) is mounted on the cleaning mechanism (04) and dries the partition; and the repairing mechanism (06) is mounted on the moving mechanism (03) and repairs and straightens the partition.

2. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 1, characterized in that: The fixing mechanism (01) comprises a slope (11), a baffle (12), a drainage pipe (13), four groups of hydraulic cylinders (14), four groups of sealing rings (15) and four groups of top plates (16). The bottom end of the slope (11) is connected to the ground, the bottom end of the baffle (12) is connected to the top end of the slope (11), the drainage pipe (13) is installed on the baffle (12), the bottom end of the four groups of hydraulic cylinders (14) is connected to the top end of the slope (11), the four groups of sealing rings (15) are respectively sleeved at the connection between the four groups of hydraulic cylinders (14) and the slope (11), and the bottom end of the four groups of top plates (16) is connected to the top end of the four groups of sealing rings (15).

3. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 1, characterized in that: The cart (02) comprises a body (21), a push rod (22), a driving device (23), two groups of wheels (24), four groups of cylinders (25) and two groups of clamping plates (26). The bottom end of the body (21) is provided with meshes, the push rod (22) is mounted on the body (21), the top end of the driving device (23) is connected to the bottom end of the body (21), the two groups of wheels (24) are rotatably mounted on the driving device (23), the four groups of cylinders (25) are mounted on the body (21) in pairs, and the clamping plates (26) are mounted on the top ends of the two groups of cylinders (25) on the same side.

4. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 2, characterized in that: The moving mechanism (03) comprises a motor (31), two groups of reducers (32), a transmission shaft (33), two groups of reciprocating screws (34) and a slider (35). The motor (31) is mounted on the baffle (12), the two groups of reducers (32) are mounted on the baffle (12), the drainage pipe (13) is rotatably mounted between the two groups of reducers (32), the two groups of reciprocating screws (34) are rotatably mounted on the baffle (12) and are respectively longitudinally connected to the two groups of reducers (32), and the slider (35) is slidably mounted on the two groups of reciprocating screws (34).

5. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 2, characterized in that: The cleaning mechanism (04) comprises a second motor (41), a second reducer (42), a water pump (43), a water extraction pipe (44), a water delivery hose (45) and a plurality of nozzles (46). The second motor (41) is mounted on the baffle (12), the second reducer (42) is mounted on the baffle (12), the water pump (43) is mounted on the baffle (12), the water extraction pipe (44) is mounted on the water pump (43), the water delivery hose (45) is mounted on the water pump (43), and the plurality of nozzles (46) are mounted on the slider (35) and communicated with the inside of the water delivery hose (45).

6. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 2, characterized in that: The purge mechanism (05) comprises an air pump (51), an air supply pipe (52), an air dispersion hopper (53) and a plurality of wind shielding strips (54). The air pump (51) is mounted on the baffle plate (12), the air supply pipe (52) is mounted on the air pump (51), the air dispersion hopper (53) is mounted on the baffle plate (12) and is in communication with the interior of the air supply pipe (52), and the plurality of wind shielding strips (54) are rotatably mounted on the air dispersion hopper (53).

7. The steam turbine stator diaphragm gas seal cleaning and repairing equipment according to claim 4, characterized in that: The repair mechanism (06) comprises a support plate (61), two groups of brackets (62), two groups of hydraulic cylinders (63), a connecting seat (64) and a correction roller (65); the top end of the support plate (61) is connected to the bottom end of the slider (35); the two groups of brackets (62) are both mounted on the support plate (61); the two groups of hydraulic cylinders (63) are respectively mounted on the two groups of brackets (62) and the top ends of the two groups of hydraulic cylinders (63) are both connected to the bottom end of the slider (35); the top end of the connecting seat (64) is connected to the bottom end of the two groups of hydraulic cylinders (63); and the correction roller (65) is rotatably mounted on the connecting seat (64).

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