Spraying tool for turbine blade

Abstract

The invention relates to the technical field of steam turbines, and discloses a steam turbine blade spraying tool which comprises a shell, one side of the shell is connected with an L-shaped door plate through a guide assembly, the bottom of the shell is provided with a blocking assembly for limiting the position of the L-shaped door plate, and one side of the L-shaped door plate is movably connected with a connecting shaft; a power assembly for driving the connecting shaft to rotate is arranged on the outer wall of one side of the L-shaped door plate, the end, penetrating through the L-shaped door plate and entering the shell, of the connecting shaft is connected with a shell, a clamping assembly is arranged in the shell and comprises a mounting plate, and the mounting plate is fixed to the inner wall of one side of the shell through bolts; according to the device, the clamped steam turbine blade can be turned over rapidly, time and labor waste caused by manual disassembly and turnover is avoided, meanwhile, the air environment in the shell can be improved, a worker is prevented from inhaling a large amount of gas containing paint particles when opening the door plate, the sliding groove can be blocked through the check block, and impurities are prevented from entering the shell.

Description

Technical Field

[0001] This invention relates to the field of steam turbine technology, specifically to a steam turbine blade spraying fixture. Background Technology

[0002] Steam turbine blades are key components of steam turbines, mainly used to convert the thermal energy of steam into mechanical energy. Steam turbine blades need to withstand corrosion and wear caused by high-temperature combustion, so painting equipment is needed to paint the blades. The high-temperature diffusion coating formed by painting can isolate the high-temperature environment from the direct damage to the metal substrate and extend its service life.

[0003] However, the following defects still exist;

[0004] 1. Steam turbine blades usually need to be painted on both sides, which requires workers to disassemble, flip and fix them, thus wasting a lot of processing time.

[0005] 2. After the painting is completed, paint particles will remain in the air inside the spraying fixture. Workers will inhale these particles when they open the door, which will affect their health. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a turbine blade spraying fixture. The main purpose is to solve the problem that turbine blades typically require spraying on both sides, necessitating disassembly, flipping, and re-fixing by workers, which wastes considerable processing time. Furthermore, after spraying, paint particles remain in the air inside the fixture, which workers can inhale when they open the door, impacting their health.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution:

[0010] A turbine blade spraying fixture includes a housing. One side of the housing is connected to an L-shaped door panel via a guide assembly. The bottom of the housing has a blocking assembly that restricts the position of the L-shaped door panel. A connecting shaft is movably connected to one side of the L-shaped door panel. A power assembly for rotating the connecting shaft is located on the outer wall of one side of the L-shaped door panel. One end of the connecting shaft passes through the L-shaped door panel and enters the housing, which is connected to the housing itself. A clamping assembly is located inside the housing. The clamping assembly includes a mounting plate, which is bolted to the inner wall of one side of the housing. A first motor is fixedly connected to the upper surface of the mounting plate. A bidirectional threaded rod is movably connected to the bottom of the mounting plate, and one end of the output shaft of the first motor passes through the mounting plate and is fixed to the bidirectional threaded rod. Two clamping blocks are movably connected to the outer side of the bidirectional threaded rod. Two sliding grooves are formed on one side of the housing, and the clamping blocks are slidably connected to the corresponding sliding grooves. A spraying assembly is located at the top of the housing, and an air guiding assembly is located inside the housing.

[0011] Furthermore, the guide assembly includes two guide rods, which are fixed to the inner wall of one side of the housing by bolts. The inner walls of both sides of the L-shaped door panel have protrusions and connecting frames respectively by bolts, and the protrusions and connecting frames are slidably connected to the guide rods at adjacent positions.

[0012] Based on the aforementioned scheme, the power assembly includes a first cylinder, which is fixed to one outer wall of the L-shaped door panel by bolts. A slide rail is fixedly connected to one outer wall of the L-shaped door panel, and a slider is movably connected to the slide rail. The slider is fixed to one end of the piston rod of the first cylinder. A rack is fixedly connected to one side of the slider. A first gear is keyed to one end of the connecting shaft extending out of the L-shaped door panel, and the first gear meshes with the rack.

[0013] As a further embodiment of the present invention, the spraying assembly includes a connection port located at the top of the housing. A rotating ring is movably connected within the connection port, and a guide tube is fixedly connected to the rotating ring. The top end of the guide tube passes through the rotating ring, and the bottom end of the guide tube passes through the rotating ring and is connected to and fixedly connected to multiple connecting tubes. Multiple nozzles are fixedly connected to each of the multiple connecting tubes. A drive assembly for rotating the rotating ring is provided on the top outer wall of the housing.

[0014] Furthermore, the drive assembly includes a mounting frame, which is fixed to the top outer wall of the housing by bolts. A second motor is bolted to the upper surface of the mounting frame. One end of the output shaft of the second motor passes through the mounting frame and is keyed to a third gear. The upper surface of the rotating ring is fixedly connected to a second gear with a central opening, and the second gear meshes with the third gear.

[0015] Based on the aforementioned scheme, the top end of the connecting pipe passes through the rotating ring and is connected to and fixed with a rotary joint, and the rotary joint passes through the opening in the middle of the second gear, and the top end of the rotary joint is connected to and fixed with an inlet pipe.

[0016] As a further embodiment of the present invention, the air guiding component includes two through holes, which are opened on the top of the outer shell. An air outlet pipe is fixedly connected to each of the two through holes, and a support frame is fixedly connected inside the air outlet pipe. An exhaust fan is fixedly connected to the support frame.

[0017] Furthermore, a stop block is fixedly connected to the clamping block, and the stop block blocks the sliding groove at the adjacent side position.

[0018] Based on the aforementioned solution, the blocking assembly includes a second cylinder, which is fixed to the bottom outer wall of the housing by bolts. One end of the piston rod of the second cylinder is fixedly connected to a fixing plate, and the fixing plate is fixed to the bottom of the L-shaped door panel. Sealing gaskets are fixedly connected to multiple sides of the L-shaped door panel, and the sealing gaskets are in close contact with the housing.

[0019] As a further embodiment of the present invention, a collection box is placed on the bottom inner wall of the outer casing.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, the present invention provides a turbine blade spraying fixture, which has the following beneficial effects:

[0022] 1. This invention uses a power component to rotate the clamping component, thereby allowing the angle of the clamped turbine blades to be flipped and adjusted. This avoids the time-consuming and labor-intensive process of manual disassembly and flipping, making it more flexible to use and improving the spraying efficiency of the device.

[0023] 2. In this invention, the two fan blades in the air guide assembly face opposite directions, one for exhaust and one for intake, which can improve the air environment inside the casing and prevent workers from inhaling large amounts of paint-containing gas when opening the door.

[0024] 3. The present invention, through the setting of the clamping component, enables the clamping block to clamp the turbine blade, and the stop on the clamping block can block the slide groove to prevent impurities from entering the shell, protect the internal structure of the shell, extend the service life of the tooling, and improve the use effect of the device.

[0025] 4. The present invention facilitates the opening and closing of the L-shaped door panel by using a guide component and a blocking component. The guide rod guides the L-shaped door panel, and the sealing gasket on the side of the L-shaped door panel is in close contact with the outer shell to achieve internal sealing of the device, prevent paint leakage, and ensure a safe working environment.

[0026] 5. The present invention, through the setting of the spraying component, enables the spray head to rotate and spray paint, so that the paint can be sprayed more fully and evenly onto the turbine blades, thereby improving the spraying quality. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural schematic diagram of a turbine blade spraying fixture proposed in this invention;

[0028] Figure 2 This is a schematic cross-sectional view of the outer shell of a turbine blade spraying fixture proposed in this invention;

[0029] Figure 3 This is a schematic cross-sectional view of the outlet pipe of a turbine blade spraying fixture proposed in this invention.

[0030] Figure 4 This is a partially enlarged structural schematic diagram of a turbine blade spraying fixture proposed in this invention;

[0031] Figure 5 This is a schematic cross-sectional view of the casing of a turbine blade spraying fixture proposed in this invention.

[0032] In the diagram: 1. Outer shell; 2. Air outlet pipe; 3. First cylinder; 4. Slider; 5. L-shaped door panel; 6. Slide rail; 7. Rack; 8. Connecting shaft; 9. First gear; 10. Fixing plate; 11. Through hole; 12. Guide rod; 13. Connecting frame; 14. Collection box; 15. Second cylinder; 16. Exhaust fan; 17. Support frame; 18. Second gear; 19. Rotating ring; 20. Fixing frame; 21. Third gear; 22. Rotary joint; 23. Liquid inlet pipe; 24. Connecting pipe; 25. Nozzle; 26. Guide pipe; 27. Slide groove; 28. Clamping block; 29. ​​Stop block; 30. Mounting plate; 31. Bidirectional threaded rod; 32. Outer shell. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figures 1-5A turbine blade spraying fixture includes a housing 1. An L-shaped door panel 5 is connected to one side of the housing 1 via a guide assembly. The guide assembly includes two guide rods 12, which are bolted to the inner wall of one side of the housing 1. The inner walls of both sides of the L-shaped door panel 5 have protrusions and connecting brackets 13 bolted to each other, and the protrusions and connecting brackets 13 are slidably connected to the guide rods 12 at adjacent positions. The guide assembly can guide the L-shaped door panel 5. A blocking assembly is provided at the bottom of the housing 1 to restrict the position of the L-shaped door panel 5. The blocking assembly includes a second cylinder 15. 5 is fixed to the bottom outer wall of the outer casing 1 by bolts. One end of the piston rod of the second cylinder 15 is fixed to the fixing plate 10 by bolts, and the fixing plate 10 is fixed to the bottom of the L-shaped door panel 5. The second cylinder 15 extends and drives the fixing plate 10 to move, thereby driving the L-shaped door panel 5 to slide open along the guide rod 12. Sealing gaskets are adhered to multiple sides of the L-shaped door panel 5, and the sealing gaskets are in close contact with the outer casing 1. When closed, the second cylinder 15 moves in the opposite direction, and the L-shaped door panel 5 returns to the initial position. The sealing gaskets on multiple sides of the L-shaped door panel 5 are in close contact with the outer casing 1, thus achieving sealing inside the device.

[0035] In particular, a connecting shaft 8 is rotatably connected to one side of the L-shaped door panel 5. A power assembly for driving the connecting shaft 8 to rotate is provided on the outer wall of one side of the L-shaped door panel 5. The power assembly includes a first cylinder 3, which is fixed to the outer wall of one side of the L-shaped door panel 5 by bolts. A slide rail 6 is fixed to the outer wall of one side of the L-shaped door panel 5 by bolts. A slider 4 is slidably connected to the slide rail 6, and the slider 4 is fixed to one end of the piston rod of the first cylinder 3. A rack 7 is fixed to one side of the slider 4 by bolts. A first gear 9 is keyed to one end of the connecting shaft 8 that extends out of the L-shaped door panel 5, and the first gear 9 meshes with the rack 7. The end of the connecting shaft 8 that passes through the L-shaped door panel 5 and enters the outer casing 1 is connected to a housing 32. A clamping assembly is provided inside the housing 32. The extension of the first cylinder 3 pushes the slider 4 to slide on the slide rail 6, thereby causing the rack 7 to drive the first gear 9 to rotate, which in turn drives the connecting shaft 8 to rotate. The rotation of the connecting shaft 8 causes the housing 32 to drive the clamping assembly to rotate as a whole, thereby causing the angle of the turbine blades clamped by the clamping assembly to be flipped and adjusted.

[0036] It should be noted that the clamping assembly includes a mounting plate 30, which is fixed to the inner wall of one side of the housing 32 by bolts. A first motor is fixed to the upper surface of the mounting plate 30 by bolts. A bidirectional threaded rod 31 is rotatably connected to the bottom of the mounting plate 30, and one end of the output shaft of the first motor passes through the mounting plate 30 and is fixed to the bidirectional threaded rod 31. Two clamping blocks 28 are threaded to the outer side of the bidirectional threaded rod 31. Two sliding grooves 27 are opened on one side of the housing 32, and the clamping blocks 28 are slidably connected to the corresponding sliding grooves 27. The turbine blades to be coated are placed inside the outer casing 1, with the blades positioned between the two clamping blocks 28. The first motor is started, which drives the bidirectional threaded rod 31 to rotate, thereby causing the two clamping blocks 28 to move towards the center along the slide groove 27, thus clamping the turbine blades. A stop block 29 is fixed to the clamping block 28 by bolts, and the stop block 29 blocks the slide groove 27 on the adjacent side. The stop block 29 can block the slide groove 27 to prevent impurities from entering the casing 32 through the slide groove 27 during the movement of the clamping block 28.

[0037] In this invention, a spraying assembly is provided on the top of the outer casing 1. The spraying assembly includes a connection port, which is located on the top of the outer casing 1. A rotating ring 19 is rotatably connected inside the connection port. A guide tube 26 is fixed to the rotating ring 19 by bolts. The top end of the guide tube 26 passes through the rotating ring 19, and the bottom end of the guide tube 26 passes through the rotating ring 19 and is connected to and fixed with multiple connecting tubes 24. Multiple nozzles 25 are connected and fixed to each of the multiple connecting tubes 24. A driving assembly for rotating the rotating ring 19 is provided on the top outer wall of the outer casing 1. The driving assembly includes a fixing frame 20, which is fixed to the top outer wall of the outer casing 1 by bolts. A second motor is bolted to the upper surface of the fixing frame 20. One end of the output shaft of the second motor passes through the fixing frame 20 and is keyed to a third gear 21. The second gear 21 with a central opening is bolted to the upper surface of the rotating ring 19. 8. The second gear 18 meshes with the third gear 21. The rotation of the second motor causes the third gear 21 to rotate, which in turn causes the second gear 18 to drive the rotating ring 19 to rotate within the connection port. This, in turn, causes the guide pipe 26 to drive the nozzle 25 on the connecting pipe 24 to rotate, so that the turbine blades are evenly coated. The top end of the connecting pipe 24 passes through the rotating ring 19 and is connected to and fixed with a rotary joint 22. The rotary joint 22 passes through the opening in the middle of the second gear 18. The top end of the rotary joint 22 is connected to and fixed with an inlet pipe 23, which connects the inlet pipe 23 to the external paint supply equipment. The paint in the external paint supply equipment enters the connecting pipe 24 through the inlet pipe 23, the rotary joint 22, and the guide pipe 26 in sequence, and is finally sprayed out from the nozzle 25 onto the turbine blades. A collection box 14 is placed on the bottom inner wall of the outer casing 1, and the sprayed paint falls into the collection box 14 for collection.

[0038] The interior of the outer casing 1 is equipped with a venting assembly, which includes two through holes 11 located at the top of the outer casing 1. Each through hole 11 is connected to and fixed with an exhaust pipe 2. A support frame 17 is fixed to the exhaust pipe 2 by bolts, and an exhaust fan 16 is fixed to the support frame 17 by bolts. The blades of the two exhaust fans 16 face opposite directions. When the two exhaust fans 16 are activated, one exhaust fan 16 discharges the gas containing paint particles inside the outer casing 1 through the exhaust pipe 2 connected to it, while the other exhaust fan 16 introduces external gas into the outer casing 1 through the exhaust pipe 2 connected to it. An observation port is provided on the L-shaped door panel 5, and an observation window is fixed inside the observation port, allowing staff to observe the interior of the outer casing 1.

[0039] The working principle of this embodiment is as follows: When it is necessary to paint the turbine blades...

[0040] Opening and closing of L-shaped door panel 5: When the second cylinder 15 is activated, the second cylinder 15 extends and moves the fixed plate 10, thereby causing the L-shaped door panel 5 to slide open along the guide rod 12; when closing, the second cylinder 15 moves in the opposite direction, and the L-shaped door panel 5 returns to its initial position, and the sealing gaskets on its multiple sides are in close contact with the outer shell 1 to achieve sealing inside the device.

[0041] Clamping: After opening the L-shaped door panel 5, place the turbine blade to be sprayed into the outer casing 1, so that the blade is located between the two clamping blocks 28. Start the first motor, and the first motor drives the bidirectional threaded rod 31 to rotate, so that the two clamping blocks 28 move towards the middle along the slide groove 27 respectively, thereby clamping the turbine blade. The stop block 29 can block the slide groove 27 to prevent impurities from entering the casing 32 through the slide groove 27 during the movement of the clamping blocks 28.

[0042] Flipping: The first cylinder 3 is activated, and the first cylinder 3 extends to push the slider 4 to slide on the slide rail 6, thereby causing the rack 7 to drive the first gear 9 to rotate, which in turn drives the connecting shaft 8 to rotate. The rotation of the connecting shaft 8 causes the housing 32 to drive the entire clamping assembly to rotate, thereby causing the angle of the turbine blades clamped by the clamping assembly to be flipped and adjusted.

[0043] Spraying: Connect the liquid inlet pipe 23 to the external paint supply equipment. The paint in the external paint supply equipment enters the connecting pipe 24 through the liquid inlet pipe 23, rotary joint 22, and guide pipe 26 in sequence, and is finally sprayed out from the nozzle 25. Start the second motor. The rotation of the second motor causes the third gear 21 to rotate, which in turn causes the second gear 18 to drive the rotating ring 19 to rotate in the connection port. This causes the guide pipe 26 to drive the nozzle 25 on the connecting pipe 24 to rotate, so that the turbine blades are evenly sprayed. The sprayed paint falls into the collection box 14 for collection.

[0044] Air ducting: Activate two exhaust fans 16. Since the blades of the two exhaust fans 16 face opposite directions, one exhaust fan 16 exhausts the gas containing paint particles inside the outer casing 1 through the exhaust pipe 2 connected to it, while the other exhaust fan 16 introduces external gas into the outer casing 1 through the exhaust pipe 2 connected to it, thereby improving the air environment inside the outer casing and preventing workers from inhaling large amounts of gas containing paint particles when opening the L-shaped door panel 5. The exhaust pipe 2, which discharges the gas containing paint particles, can also be connected to external purification equipment to filter the gas containing paint particles.

[0045] 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 provides control.

[0046] In the description herein, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to fixed connections, mechanical connections, electrical connections, or direct connections. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.

[0047] In the description herein, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A turbine blade spraying fixture, comprising a housing (1), characterized in that, One side of the outer casing (1) is connected to an L-shaped door panel (5) via a guide assembly. The bottom of the outer casing (1) is provided with a blocking assembly that restricts the position of the L-shaped door panel (5). A connecting shaft (8) is movably connected to one side of the L-shaped door panel (5). A power assembly that drives the connecting shaft (8) to rotate is provided on the outer wall of one side of the L-shaped door panel (5). One end of the connecting shaft (8) that passes through the L-shaped door panel (5) and enters the outer casing (1) is connected to a housing (32). A clamping assembly is provided inside the housing (32). The clamping assembly includes a mounting plate (30), which is fixed to the housing (32) by bolts. On one side of the inner wall, the upper surface of the mounting plate (30) is fixedly connected to a first motor, the bottom of the mounting plate (30) is movably connected to a bidirectional threaded rod (31), and one end of the output shaft of the first motor passes through the mounting plate (30) and is fixed to the bidirectional threaded rod (31). Two clamping blocks (28) are movably connected to the outer side of the bidirectional threaded rod (31). Two sliding grooves (27) are opened on one side of the housing (32), and the clamping blocks (28) are slidably connected to the sliding grooves (27) at the corresponding positions. The top of the outer shell (1) is provided with a spraying assembly, and the inside of the outer shell (1) is provided with an air guiding assembly.

2. The turbine blade spraying fixture according to claim 1, characterized in that, The guide assembly includes two guide rods (12), which are fixed to the inner wall of one side of the outer casing (1) by bolts. The inner walls of both sides of the L-shaped door panel (5) are respectively bolted with protrusions and connecting frames (13), and the protrusions and connecting frames (13) are slidably connected to the guide rods (12) at adjacent positions.

3. The turbine blade spraying fixture according to claim 1, characterized in that, The power assembly includes a first cylinder (3), which is fixed to one side of the outer wall of the L-shaped door panel (5) by bolts. A slide rail (6) is fixedly connected to one side of the outer wall of the L-shaped door panel (5). A slider (4) is movably connected to the slide rail (6), and the slider (4) is fixed to one end of the piston rod of the first cylinder (3). A rack (7) is fixedly connected to one side of the slider (4). A first gear (9) is keyed to one end of the connecting shaft (8) extending out of the L-shaped door panel (5), and the first gear (9) meshes with the rack (7).

4. The turbine blade spraying fixture according to claim 1, characterized in that, The spraying assembly includes a connection port located at the top of the outer shell (1). A rotating ring (19) is movably connected inside the connection port. A guide tube (26) is fixedly connected to the rotating ring (19). The top end of the guide tube (26) passes through the rotating ring (19), and the bottom end of the guide tube (26) passes through the rotating ring (19) and is connected to and fixedly connected to multiple connecting tubes (24). Multiple nozzles (25) are connected and fixedly connected to each of the multiple connecting tubes (24). A drive assembly for rotating the rotating ring (19) is provided on the top outer wall of the outer shell (1).

5. The turbine blade spraying fixture according to claim 4, characterized in that, The drive assembly includes a fixed frame (20), which is fixed to the top outer wall of the housing (1) by bolts. A second motor is bolted to the upper surface of the fixed frame (20). One end of the output shaft of the second motor passes through the fixed frame (20) and is keyed to a third gear (21). A second gear (18) with a middle opening is fixedly connected to the upper surface of the rotating ring (19), and the second gear (18) meshes with the third gear (21).

6. The turbine blade spraying fixture according to claim 5, characterized in that, The top end of the connecting pipe (24) passes through the rotating ring (19) and is connected to and fixed with a rotary joint (22), and the rotary joint (22) passes through the opening in the middle of the second gear (18), and the top end of the rotary joint (22) is connected to and fixed with an inlet pipe (23).

7. The turbine blade spraying fixture according to claim 1, characterized in that, The air guiding component includes two through holes (11), which are opened on the top of the outer shell (1). Each of the two through holes (11) is connected to an air outlet pipe (2), and a support frame (17) is fixedly connected inside the air outlet pipe (2). An exhaust fan (16) is fixedly connected on the support frame (17).

8. The turbine blade spraying fixture according to claim 1, characterized in that, A stop (29) is fixedly connected to the clamp (28), and the stop (29) blocks the slide groove (27) on the adjacent side.

9. A turbine blade spraying fixture according to claim 1, characterized in that, The blocking assembly includes a second cylinder (15), which is fixed to the bottom outer wall of the outer casing (1) by bolts. One end of the piston rod of the second cylinder (15) is fixedly connected to a fixing plate (10), and the fixing plate (10) is fixed to the bottom of the L-shaped door panel (5). Sealing gaskets are fixedly connected to multiple sides of the L-shaped door panel (5), and the sealing gaskets are in close contact with the outer casing (1).

10. The turbine blade spraying fixture according to claim 1, characterized in that, A collection box (14) is placed on the bottom inner wall of the outer shell (1).

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