Tool for aligning center of steam turbine partition plate pit

Abstract

The utility model relates to the technical field of steam turbines, and discloses a steam turbine partition plate pit center alignment tool which comprises a ground, a correction assembly is installed on the upper surface of the ground, and a fixing assembly, a butt joint assembly, a positioning assembly and a lifting assembly are installed on the upper surface of the ground. According to the utility model, the structure is reasonable, the fixing assembly and the butt-joint assembly are respectively placed, and the placing positions of the fixing assembly and the butt-joint assembly are adjusted through the laser emitted by the laser emitter until the laser can penetrate through the fixing test hole of the fixing test plate and the butt-joint test hole of the butt-joint test plate. Then the fixing assembly and the butt joint assembly are fixed, the steel pipe is clamped between a fixing clamping plate and a fixing clamp, a laser transmitter moves downwards through a correction hydraulic device till laser penetrates through a butt joint correction hole and a fixing correction hole, at the moment, the falling condition of the middle position of the steel pipe is observed, and a lifting assembly on the upper portion of the falling position is driven; and the positioning seat drives the steel pipe at the falling position to move upwards.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine technology, specifically a tool for aligning the center of a steam turbine diaphragm recess. Background Technology

[0002] Centering the diaphragm recesses in a steam turbine is a crucial step in turbine installation and maintenance. The quality of this work directly affects the efficiency of subsequent blade assembly and steam seal clearance adjustment, thus impacting the turbine's thermal efficiency.

[0003] The turbine diaphragm recess centering device disclosed in Chinese Utility Model Patent Application Publication No. CN102620633B, although it can measure the distance between the vertical rod of the dial indicator and the rotor by pushing the top block, and calculate the diaphragm center deviation value, is easy to operate. However, the existing device does not solve the problem that when using a steel wire to center the turbine diaphragm recess, the steel wire sags significantly, leading to large errors during centering. Furthermore, the thin steel wire is prone to accidental contact by the operator, causing displacement and errors. Therefore, we propose a novel device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a tool for aligning the center of the turbine diaphragm recess, which solves the problem of severe wire sagging and large errors.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a turbine diaphragm recess center alignment tool, comprising a ground, a correction component installed on the upper surface of the ground, a fixing component installed on the upper surface of the ground, a docking component installed on the upper surface of the ground, a positioning component snapped into the inside of the correction component, and a lifting component installed inside the positioning component.

[0008] Optionally, the correction assembly includes a base, a correction hydraulic device, a correction shaft, a correction seat, and a laser emitter. The correction hydraulic device is mounted on the upper surface of the base. One end of the correction hydraulic device is fixedly connected to the correction shaft. The correction seat is rotatably connected inside the correction shaft. The laser emitter is mounted on the upper surface of the correction seat.

[0009] Optionally, the fixing assembly includes a fixing base, a fixing hydraulic device, a fixing plate, a fixing clamp, a fixing bolt, a docking clamp, a placement plate, and a fixing test plate. The fixing hydraulic device is mounted on the upper surface of the fixing base, and a fixing plate is mounted on one end of the fixing hydraulic device. A fixing clamp is mounted on the upper surface of the fixing plate, and a fixing bolt passes through the internal thread of the fixing clamp. A docking clamp passes through the fixing clamp via the fixing bolt thread, and a placement plate is mounted on the upper surface of the docking clamp. A fixing test plate is snapped into the interior of the fixing clamp.

[0010] Optionally, the fixed test plate has a fixed test hole inside, and the fixed clamp has a fixed correction hole inside.

[0011] Optionally, the docking assembly includes a docking seat, a docking hydraulic device, a docking plate, a fixing clamp, a docking bolt, a docking clamp, a connecting plate, and a docking test plate. The docking seat is equipped with a docking hydraulic device on its upper surface, and a docking plate is installed at one end of the docking hydraulic device. A fixing clamp is installed on the upper surface of the docking plate. A docking bolt passes through the internal thread of the fixing clamp. The fixing clamp is threaded through the docking bolt and the docking clamp is connected to the fixing clamp. A connecting plate is installed on the upper surface of the docking clamp. A docking test plate is snapped into the interior of the fixing clamp.

[0012] Optionally, the docking test plate has a docking test hole inside, and the fixing clamp has a docking correction hole inside.

[0013] Optionally, the positioning component includes a positioning plate, a positioning rope, a positioning seat, and a steel pipe. The positioning rope is slidably connected inside the positioning plate, one end of the positioning rope is fixedly connected to the positioning seat, and the steel pipe is snapped into the inside of the positioning seat.

[0014] Optionally, the lifting assembly includes a lifting motor, a driving gear, a driven gear, a driving wheel, and a driven wheel. One end of the lifting motor is connected to the driving gear, the surface of the driving gear meshes with the driven gear, the driving gear is connected to the inside of the driving gear, and the driven gear is connected to the inside of the driven gear.

[0015] In summary, the technical effects and advantages of this utility model are as follows:

[0016] 1. This utility model has a reasonable structure. By placing the correction component at the required centering position in the turbine diaphragm recess, the correction hydraulic device moves the correction shaft seat and laser emitter upwards to a suitable height. Then, by rotating the correction seat, the angle of the laser emitter is adjusted until it reaches the required centering position in the turbine diaphragm recess. The fixing component and docking component are then placed separately. The laser emitted by the laser emitter adjusts the positions of the fixing and docking components until the laser can penetrate the fixing test hole of the fixing test plate and the docking test hole of the docking test plate. The fixing and docking components are then fixed, and the fixing and docking test plates can be removed. The steel pipe is clamped between the fixing clamp and the fixing fixture. By tightening the fixing bolts, the docking fixture and the fixing clamp clamp the steel pipe. By tightening the docking bolts, the docking clamp and the fixing clamp clamp the steel pipe. The correction hydraulic device moves the laser emitter downwards until the laser penetrates the docking correction hole and the fixing correction... At this point, observe the sag of the steel pipe at the middle position. Drive the lifting assembly above the sag position. The lifting motor drives the drive gear, which in turn rotates with the driven gear. This causes the positioning rope at the sag position to move upward, and the positioning seat moves the steel pipe at the sag position upward. Repeat the above operation until all the steel pipes at the sag positions are corrected, so that the laser emitted by the laser emitter can penetrate the docking correction hole and the fixed correction hole, making the steel pipe horizontal. Then, turn off the laser emitter. Subsequently, the turbine diaphragm recess centering operation can be manually performed. This reduces the need for the existing turbine diaphragm recess centering operation, which usually uses steel wire. However, steel wire sags significantly, leading to large errors during centering operation. Furthermore, the thin steel wire is prone to accidental contact by the operator, causing displacement and errors. This method achieves the effect of using steel pipe instead of steel wire, while simultaneously correcting the sag position of the steel pipe, making it horizontal and facilitating subsequent centering operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the corrective component structure of this utility model;

[0019] Figure 3 This is an exploded view of the fixed component structure of this utility model;

[0020] Figure 4 This is an exploded view of the docking assembly structure of this utility model;

[0021] Figure 5 This is an exploded view of the positioning component structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the lifting component structure of this utility model.

[0023] In the diagram: 1. Ground; 2. Correction assembly; 201. Base; 202. Correction hydraulic device; 203. Correction bearing seat; 204. Correction seat; 205. Laser emitter; 3. Fixing assembly; 301. Fixing seat; 302. Fixing hydraulic device; 303. Fixing plate; 304. Fixing clamp; 305. Fixing bolt; 306. Docking clamp; 307. Placement plate; 308. Fixing test plate; 4. Docking assembly; 401. Docking seat 402. Hydraulic docking device; 403. Dating plate; 404. Fixing clamp; 405. Dating bolt; 406. Dating clamp; 407. Connecting plate; 408. Dating test plate; 5. Positioning assembly; 501. Positioning plate; 502. Positioning rope; 503. Positioning seat; 504. Steel pipe; 6. Lifting assembly; 601. Lifting motor; 602. Driven gear; 603. Driven gear; 604. Driven wheel; 605. Driven wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example: Reference Figures 1-6 The turbine diaphragm recess center alignment tool shown includes a ground surface 1, a straightening component 2 installed on the upper surface of the ground surface 1, a fixing component 3 installed on the upper surface of the ground surface 1, a docking component 4 installed on the upper surface of the ground surface 1, a positioning component 5 snapped into the inside of the straightening component 2, and a lifting component 6 installed inside the positioning component 5.

[0026] As a preferred embodiment of this example, Figures 1-6As shown, a correction assembly 2 is installed on the upper surface of ground 1. The correction assembly 2 includes a base 201, a correction hydraulic device 202, a correction bearing 203, a correction seat 204, and a laser emitter 205. The correction hydraulic device 202 is installed on the upper surface of the base 201. One end of the correction hydraulic device 202 is fixedly connected to the correction bearing 203. The correction seat 204 is rotatably connected inside the correction bearing 203. The laser emitter 205 is installed on the upper surface of the correction seat 204. A fixing assembly 3 is installed on the upper surface of ground 1. The fixing assembly 3 includes a fixing seat 301, a fixing hydraulic device 302, a fixing plate 303, a fixing clamp 304, a fixing bolt 305, a docking clamp 306, a placement plate 307, and a fixing test plate 308. The fixing seat 3... A fixing hydraulic device 302 is installed on the upper surface of 01. A fixing plate 303 is installed at one end of the fixing hydraulic device 302. A fixing clamp 304 is installed on the upper surface of the fixing plate 303. A fixing bolt 305 passes through the internal thread of the fixing clamp 304. A docking clamp 306 passes through the fixing clamp 304 through the fixing bolt 305. A placement plate 307 is installed on the upper surface of the docking clamp 306. A fixing test plate 308 is snapped into the inside of the fixing clamp 304. A fixing test hole is opened inside the fixing test plate 308. A fixing correction hole is opened inside the fixing clamp 304. A docking assembly 4 is installed on the upper surface of ground 1. The docking assembly 4 includes a docking seat 401, a docking hydraulic device 402, a docking plate 403, and a fixing clamp 404. 4. The system includes a mating bolt 405, a mating clamp 406, a connecting plate 407, and a mating test plate 408. A mating hydraulic device 402 is mounted on the upper surface of the mating seat 401. A mating plate 403 is mounted on one end of the mating hydraulic device 402. A fixing clamp 404 is mounted on the upper surface of the mating plate 403. A mating bolt 405 passes through the internal thread of the fixing clamp 404. A mating clamp 406 passes through the fixing clamp 404 via the thread of the mating bolt 405. A connecting plate 407 is mounted on the upper surface of the mating clamp 406. A mating test plate 408 is snapped into the inside of the fixing clamp 404. A mating test hole is formed inside the mating test plate 408. A mating correction hole is formed inside the fixing clamp 404. A positioning assembly is snapped into the inside of the correction component 2. Component 5, the positioning assembly 5 includes a positioning plate 501, a positioning rope 502, a positioning seat 503, and a steel pipe 504. The positioning rope 502 is slidably connected inside the positioning plate 501, and one end of the positioning rope 502 is fixedly connected to the positioning seat 503. The steel pipe 504 is snapped into the inside of the positioning seat 503. A lifting assembly 6 is installed inside the positioning assembly 5. The lifting assembly 6 includes a lifting motor 601, a driving gear 602, a driven gear 603, a driving wheel 604, and a driven wheel 605. One end of the lifting motor 601 is inserted into the driving gear 602, and the driven gear 603 meshes with the surface of the driving gear 602. The driving wheel 604 is inserted inside the driving gear 602, and the driven wheel 605 is inserted inside the driven gear 603. During use...By placing the correction assembly 2 at the required centering position in the turbine diaphragm recess, the correction hydraulic device 202 moves the correction bearing 203 and laser emitter 205 upwards to a suitable height. Then, by rotating the correction seat 204, the angle of the laser emitter 205 is adjusted until it reaches the required centering position in the turbine diaphragm recess. The fixing assembly 3 and docking assembly 4 are then placed. The laser emitted by the laser emitter 205 is used to adjust the positions of the fixing assembly 3 and docking assembly 4 until the laser can penetrate the fixed test plate 30. After fixing the test holes of the fixed test plate 8 and the test holes of the docking test plate 408, fix the fixed component 3 and the docking component 4, and then remove the fixed test plate 308 and the docking test plate 408. Clip the steel pipe 504 between the fixed clamp plate 404 and the fixed clamp 304. Tighten the fixing bolt 305 to clamp and fix the steel pipe 504 with the docking clamp 306 and the fixed clamp 304. Tighten the docking bolt 405 to clamp and fix the steel pipe 504 with the docking clamp plate 406 and the fixed clamp 404. Use the corrective hydraulic device 202 to move the laser emitter 205 downwards until the laser penetrates the test plate 408. Connect the alignment hole and the fixed alignment hole. Observe the descent of the steel pipe 504 at the middle position. Drive the lifting assembly 6 at the upper part of the descent position. The lifting motor 601 drives the drive gear 602. The drive gear 602 cooperates with the driven gear 603 to rotate the drive wheel 604 and the driven wheel 605. This causes the positioning rope 502 at the descent position to move upward, which in turn causes the positioning seat 503 to move the steel pipe 504 at the descent position upward. Repeat the above operation until all the steel pipes 504 at the descent positions are aligned, so that the laser emitted by the laser emitter 205 can penetrate the alignment hole and the fixed alignment hole, allowing the steel pipe to... With tube 504 in a horizontal position, laser emitter 205 can be shut off. Subsequently, manual centering of the turbine diaphragm recesses can be performed. This eliminates the need for the existing method of centering turbine diaphragm recesses using steel wire, which suffers from significant wire sag, leading to large errors during centering. Furthermore, the thinness of the steel wire makes it easy for operators to accidentally touch it, causing displacement and errors. By using steel tube 504 instead of steel wire, and correcting the sag of steel tube 504 to ensure it is horizontal, the centering process is much easier for operators.

[0027] The working principle of this practical application is as follows:

[0028] During use, the straightening assembly 2 is placed at the required centering position in the turbine diaphragm recess. The straightening hydraulic device 202 moves the straightening shaft seat 203 and the laser emitter 205 upwards to a suitable height. Then, the angle of the laser emitter 205 is adjusted by rotating the straightening seat 204 until it reaches the required centering position in the turbine diaphragm recess. The fixing assembly 3 and the docking assembly 4 are then placed. The laser emitted by the laser emitter 205 is used to adjust the positions of the fixing assembly 3 and the docking assembly 4 until the laser can penetrate the fixing test hole of the fixing test plate 308 and the docking test hole of the docking test plate 408. The fixing assembly 3 and the docking assembly 4 are then fixed, and the fixing test plate 308 and the docking test plate 408 can be removed. The steel pipe 504 is clamped between the fixing clamp 404 and the fixing fixture 304. By tightening the fixing bolts 305, the docking fixture 306 and the fixing fixture 304 hold the steel pipe in place. The pipe 504 is clamped and fixed. By tightening the connecting bolts 405, the connecting clamp 406 and the fixing clamp 404 clamp and fix the steel pipe 504. The laser emitter 205 is moved downward by the straightening hydraulic device 202 until the laser penetrates the connecting straightening hole and the fixing straightening hole. At this time, the descent of the middle position of the steel pipe 504 is observed. The lifting component 6 above the descent position is driven. The lifting motor 601 drives the drive gear 602. The drive gear 602 cooperates with the driven gear 603 to make the drive gear 602 drive the drive gear 604. Rotating wheel 604 and driven wheel 605 causes the positioning rope 502 at the falling position to move upward, which in turn causes the positioning seat 503 to drive the steel pipe 504 at the falling position to move upward. Repeating the above operation until all the steel pipes 504 at the falling position are corrected, so that the laser emitted by the laser emitter 205 can penetrate the docking correction hole and the fixed correction hole, and the steel pipe 504 is in a horizontal state, the laser emitter 205 can be turned off, and then the centering operation of the turbine diaphragm recess can be performed manually.

[0029] All electrical components mentioned in this article are connected to an external main controller and 220V AC mains power, and the main controller can be a conventional known device such as a computer that can control it.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for centering a diaphragm pocket of a steam turbine, comprising a ground surface (1), characterized in that: A correction component (2) is installed on the upper surface of the ground (1), a fixing component (3) is installed on the upper surface of the ground (1), a docking component (4) is installed on the upper surface of the ground (1), a positioning component (5) is snapped into the inside of the correction component (2), and a lifting component (6) is installed inside the positioning component (5).

2. The steam turbine diaphragm pocket centering tool of claim 1, wherein: The correction assembly (2) includes a base (201), a correction hydraulic device (202), a correction bearing (203), a correction seat (204), and a laser emitter (205). The correction hydraulic device (202) is mounted on the upper surface of the base (201). One end of the correction hydraulic device (202) is fixedly connected to the correction bearing (203). The correction seat (204) is rotatably connected inside the correction bearing (203). The laser emitter (205) is mounted on the upper surface of the correction seat (204).

3. The turbine diaphragm bowl centering tool of claim 1, wherein: The fixing assembly (3) includes a fixing base (301), a fixing hydraulic device (302), a fixing plate (303), a fixing clamp (304), a fixing bolt (305), a docking clamp (306), a placement plate (307), and a fixing test plate (308). The fixing hydraulic device (302) is mounted on the upper surface of the fixing base (301). The fixing plate (303) is mounted on one end of the fixing hydraulic device (302). The fixing clamp (304) is mounted on the upper surface of the fixing plate (303). The fixing bolt (305) passes through the internal thread of the fixing clamp (304). The docking clamp (306) is threaded through the fixing bolt (305) of the fixing clamp (304). The placement plate (307) is mounted on the upper surface of the docking clamp (306). The fixing test plate (308) is snapped into the inside of the fixing clamp (304).

4. The turbine diaphragm well center alignment tool of claim 3, wherein: The fixed test plate (308) has a fixed test hole inside, and the fixed clamp (304) has a fixed correction hole inside.

5. The turbine diaphragm well center alignment tool of claim 1, wherein: The docking assembly (4) includes a docking seat (401), a docking hydraulic device (402), a docking plate (403), a fixing clamp (404), a docking bolt (405), a docking clamp (406), a connecting plate (407), and a docking test plate (408). The docking seat (401) is equipped with a docking hydraulic device (402) on its upper surface. A docking plate (403) is installed at one end of the docking hydraulic device (402). A fixing clamp (404) is installed on the upper surface of the docking plate (403). A docking bolt (405) passes through the internal thread of the fixing clamp (404). The fixing clamp (404) is connected to the docking clamp (406) through the thread of the docking bolt (405). A connecting plate (407) is installed on the upper surface of the docking clamp (406). The docking test plate (408) is snapped into the inside of the fixing clamp (404).

6. The turbine diaphragm well center alignment tool of claim 5, wherein: The docking test plate (408) has a docking test hole inside, and the fixing clamp (404) has a docking correction hole inside.

7. The turbine diaphragm recess center alignment tool according to claim 1, characterized in that: The positioning component (5) includes a positioning plate (501), a positioning rope (502), a positioning seat (503), and a steel pipe (504). The positioning rope (502) is slidably connected inside the positioning plate (501), and the positioning seat (503) is fixedly connected to one end of the positioning rope (502). The steel pipe (504) is snapped into the inside of the positioning seat (503).

8. The steam turbine diaphragm pocket centering tool of claim 1, wherein: The lifting assembly (6) includes a lifting motor (601), a driving gear (602), a driven gear (603), a driving wheel (604), and a driven wheel (605). One end of the lifting motor (601) is connected to the driving gear (602). The surface of the driving gear (602) is meshed with the driven gear (603). The driving wheel (604) is inserted inside the driving gear (602). The driven wheel (605) is inserted inside the driven gear (603).

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