Laser cleaning device for stator blade of steam turbine

Abstract

The invention discloses a steam turbine stator blade laser cleaning device and relates to the technical field of stator blade cleaning, the steam turbine stator blade laser cleaning device comprises a lifting chamber, two motor chambers and two sliding grooves are formed in the outer surface of the top of a cleaning platform, and the two sliding grooves are perpendicular to the motor chambers; two motor fixing chambers are arranged in each motor chamber, a second motor is arranged in each motor fixing chamber, a transverse moving chamber is arranged between the two sliding grooves, and the transverse moving chamber comprises a first lead screw, a partition plate and a second lead screw; the cutting plate is arranged between the first lead screw and the second lead screw, the thread directions of the first lead screw and the second lead screw are opposite, and second thread sleeves are arranged on the peripheries of the first lead screw and the second lead screw, so that a workpiece can be effectively positioned and controlled in the cutting machining process through the cooperation of the structures, and the machining efficiency is improved. The product quality is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of stationary blade cleaning, and in particular relates to a laser cleaning device for stationary blades of a steam turbine. Background Art

[0002] The laser cleaning device for turbine stationary blades is an efficient and precise cleaning device. It uses laser technology to clean turbine stationary blades without contact or damage, effectively removing dirt and sediment on the blade surface. The device is easy to operate, has a significant cleaning effect, and can significantly improve the operating efficiency and reliability of the turbine.

[0003] Announcement No. CN217206588U discloses a cleaning device for turbine blades, including a turbine casing, which is cylindrical, a rotor is fixedly mounted on the inner side of the casing, a plurality of evenly arranged blades are arranged at the central part of the rotor, a flow conversion device is arranged above the blades, an electromagnetic control valve is arranged on the outer side of the casing at a position corresponding to one end of the flow conversion device, the other end of the control valve is connected to a water pump through a pipeline, the water pump is arranged above a water tank, an electromagnetic reversing valve is arranged on the outer side of the casing at a position corresponding to the other end of the flow conversion device, a drainage hole is opened at the bottom edge of the casing, a filtering device is arranged at the bottom of the drainage hole, and the filtering device is connected to a water tank through a pipeline.

[0004] In the process of implementing this application, it was found that the technology has the following problems: in the above patent documents, the nozzle position and the stationary blade position of the cleaning device are fixed, which may lead to uneven cleaning and cannot adapt to the changes in demand under different working conditions. At the same time, the electromagnetic reversing valve and the electromagnetic control valve are frequently adjusted to control the flow direction and flow rate of the cleaning liquid, which increases the risk of equipment failure, reduces cleaning efficiency, and affects the normal operation and maintenance of the turbine.

[0005] For this purpose, a laser cleaning device for turbine stationary blades is proposed. Summary of the invention

[0006] The purpose of the present invention is to improve the cleaning efficiency of turbine stationary blades and adapt to the changes in cleaning requirements under different working conditions. This application provides a laser cleaning device for turbine stationary blades.

[0007] The technical solution adopted by the present invention is as follows: A steam turbine stationary blade laser cleaning device comprises a cleaning platform, wherein the top outer surface of the cleaning platform is provided with two groups of motor chambers and two groups of sliding grooves, and the two groups of sliding grooves are arranged vertically with the motor chambers, two groups of motor fixing chambers are arranged inside the two groups of motor chambers, and a second motor is arranged inside each group of motor fixing chambers, and a transverse moving chamber is arranged between the two groups of sliding grooves; The transverse movement chamber includes a first screw rod, a dividing plate and a second screw rod, the dividing plate is arranged between the first screw rod and the second screw rod, and the first screw rod and the second screw rod have opposite thread directions, and the first screw rod and the second screw rod are both provided with a second threaded sleeve on their outer peripheries.

[0008] Furthermore, first motors are disposed on the outer surfaces of the left and right sides of the cleaning platform, and each group of output ends of the first motors are fixedly connected to the corresponding first screw rods and the second screw rods respectively.

[0009] Furthermore, two sets of movable clamps are arranged in parallel on the top outer surface of the transverse moving chamber, and two sets of sliding grooves are arranged on the bottom outer surfaces of the two sets of movable clamps, and the outer surfaces of the two sets of sliding grooves are slidably connected with the corresponding inner surfaces of the sliding grooves.

[0010] Furthermore, a motor output rod is provided at the output end of each group of the second motors, a fourth screw rod is provided on the outer surface of the other side of each group of the motor output rods, the outer periphery of the fourth screw rods is rotatably connected to the first threaded sleeve, a lifting platform is provided on the outer periphery of each pair of the first threaded sleeves, a fourth motor is provided on the outer surface of one side of the lifting platform on the left side, a third screw rod is provided at the output end of the fourth motor, and the other end of the third screw rod is rotatably connected to another group of the lifting platforms.

[0011] Furthermore, the third screw rod is rotatably connected to a threaded block on its periphery, a third motor is arranged on the left outer surface of the threaded block, and the threaded block includes a driven gear, a driving gear and a driving rotating rod.

[0012] Furthermore, the output end of the third motor is fixedly connected to the active rotating rod, the active gear is arranged on the periphery of the active rotating rod, a driven gear is arranged on the front side of the active rotating rod, and the outer surface of the driven gear is meshed with the outer surface of the driving gear, and a driven rotating rod is arranged on the outer surface of the other side of the driven gear.

[0013] Furthermore, a movable plate is provided on the outer surface of the other side of the driven rotating rod, two groups of limit plates and an electric cylinder are provided on the outer surface of the other side of the movable plate, and the electric cylinder is located between the two groups of limit plates, and an electric cylinder output rod is provided at the output end of the electric cylinder.

[0014] Furthermore, a limiting rod is arranged between the two groups of limiting plates, two groups of sliding sleeves are arranged around the limiting rod, springs are arranged between the two groups of sliding sleeves and the corresponding limiting plates, and the springs are arranged around the limiting rod, two groups of first rotating limiting plates are arranged on the outer surface of the other side of the electric cylinder output rod, and two groups of first rotating limiting rods are arranged between the two groups of the first rotating limiting plates.

[0015] Furthermore, a cross rotation rod is arranged around the outer periphery of the two groups of the first rotation limit rods, a limit ring is arranged on the outer surface of the other side of the cross rotation rod, three groups of laser cleaning heads are arranged on the outer surface of each group of the sliding sleeve away from the electric cylinder output rod, two groups of second rotation limit plates are arranged on the side wall of the other end of the sliding sleeve, a second rotation limit rod is arranged between each pair of the second rotation limit plates, and the inner surface of each group of the limit rings is rotatably connected to the outer surface of the corresponding second rotation limit rod.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, when a laser cleaning device is used to clean a turbine stationary blade, the first motor is started to rotate the first screw and the second screw connected to its output end. Since the corresponding first screw and the second screw rotate in opposite directions, the rotation of the first screw and the second screw can drive the corresponding two sets of movable clamps to move laterally toward or away from each other. The second motor inside the corresponding motor chamber is started to rotate the fourth screw connected to its output end. Since the first threaded sleeve rotates outside the fourth screw, the rotation of the fourth screw can drive the corresponding first threaded sleeve to move longitudinally, thereby achieving the purpose of moving the height of the laser cleaning head.

[0017] 2. In the present invention, the fourth motor is started to rotate the third screw connected to its output end, and the rotation of the third screw drives the threaded block corresponding to its periphery to move horizontally. When the laser cleaning head is moved to the position corresponding to the stationary blade, the third motor is started to rotate the active rotating rod connected to its output end, and the rotation of the active rotating rod drives the active gear to rotate. Since the active gear and the driven gear are meshed with each other, the active gear will drive the corresponding driven gear to rotate, thereby achieving the purpose of adjusting the rotation angle of the laser cleaning head.

[0018] 3. In the present invention, the corresponding electric cylinder is started to rotate the electric cylinder output rod connected to its output end, and the rotation of the electric cylinder output rod drives the corresponding two groups of first rotation limit plates to move forward and backward. Since the two groups of cross-rotating rods rotate around the corresponding first rotation limit rods, the forward and backward movement of the electric cylinder output rod can drive the corresponding cross-rotating rod to move inward or outward, and the other end of the two groups of cross-rotating rods is rotationally connected to a section of the corresponding sliding sleeve. The inward or outward movement of the cross-rotating rod can drive the corresponding sliding sleeve to slide on the outer surface of the limit rod. At the same time, the flexibility of the sliding sleeve can be improved by the spring connected to the limit periphery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the lifting assembly of the present invention; Figure 3 It is a structural schematic diagram of the corner assembly of the present invention; Figure 4 It is a structural schematic diagram of the activity mode of the cleaning component of the present invention; Figure 5 For the present invention Figure 1 Detailed view of point A in the middle; Figure 6 For the present invention Figure 4 Detail of point B in the middle In the figure: 1-cleaning platform; 2-motor room; 3-first motor; 4-first screw rod; 5-dividing plate; 6-second screw rod; 7-movable clamping plate; 8-thread block; 9-third screw rod; 10-lifting platform; 11-sliding groove; 12-sliding convex groove; 13-motor fixing room; 14-second motor; 15-motor output rod; 16-fourth screw rod; 17-first threaded sleeve; 18-rotating room; 19-driven rotating rod; 20-driven gear; 21-limiting rod; 2 2-active rotating rod; 23-third motor; 24-active gear; 25-moving plate; 26-electric cylinder; 27-electric cylinder output rod; 28-limiting plate; 29-laser cleaning head; 30-spring; 31-first rotating limiting plate; 32-cross rotating rod; 33-limiting ring; 34-second rotating limiting plate; 35-sliding sleeve; 36-second rotating limiting rod; 37-first rotating limiting rod; 38-lateral moving chamber; 39-second threaded sleeve; 40-fourth motor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example

[0021] Reference Figure 1-Figure 6 A laser cleaning device for a turbine stationary blade comprises a lifting body 1, and the top outer surface of a cleaning platform 11 is provided with two groups of motor chambers 2 and two groups of sliding grooves 11, and the two groups of sliding grooves 11 are vertically arranged with the motor chamber 2, and two groups of motor fixing chambers 13 are arranged inside the two groups of motor chambers 5, and a second motor 14 is arranged inside each group of motor fixing chambers 13, and a transverse moving chamber 38 is arranged between the two groups of sliding grooves 11, and the transverse moving chamber 38 comprises a first screw rod 4, a dividing plate 5 and a second screw rod 6, and a dividing plate 5 is arranged between the first screw rod 4 and the second screw rod 6, and the thread directions of the first screw rod 4 and the second screw rod 6 are opposite, and the periphery of the first screw rod 4 and the second screw rod 6 is provided with a second threaded sleeve 39, specifically, through the cooperation of the above structure, the workpiece cutting process can be effectively positioned and controlled to ensure product quality.

[0022] Reference Figure 1-Figure 6 The first motor 3 is arranged on the outer surface of the left and right sides of the cleaning platform 1, and the output end of each group of the first motor 3 is fixedly connected to the corresponding first screw rod 4 and the second screw rod 6. Specifically, the first motor 3 arranged on the left and right sides of the cleaning platform 1 drives the first screw rod 4 and the second screw rod 6 to rotate respectively, so as to accurately control the moving speed and position of the movable splint 7, and ensure that the laser cleaning head 29 can work stably and efficiently during the cleaning process. Two groups of movable splints 7 are arranged in parallel on the outer surface of the top of the transverse moving chamber 38, and two groups of sliding convex grooves 12 are arranged on the outer surface of the bottom of the two groups of movable splints 7. The outer surfaces of the two groups of sliding convex grooves 12 are slidably connected with the inner surfaces of the corresponding sliding grooves 11. Specifically, the sliding connection between the sliding convex grooves 12 and the sliding grooves 11 realizes the stable and flexible lateral movement of the movable splint 7.

[0023] Reference Figure 1-Figure 6 , each group of second motors 14 output end is provided with a motor output rod 15, each group of motor output rods 15 is provided with a fourth screw 16 on the other side of the outer surface, the fourth screw 16 is rotatably connected to the first threaded sleeve 17, each pair of first threaded sleeves 17 is provided with a lifting platform 10 on the outer surface, a fourth motor 40 is provided on the outer surface of one side of the left lifting platform 10, the fourth motor 40 output end is provided with a third screw 9, and the other end of the third screw 9 is rotatably connected to another group of lifting platforms 10, specifically, the second motor 14 drives the fourth screw 16 to rotate through the motor output rod 15, and then drives the first threaded sleeve 17 and the lifting platform 10 to rise and fall, so as to achieve precise height adjustment. The third screw 9 is rotatably connected to the thread block 8, the third motor 23 is provided on the left side of the thread block 8, and the thread block 8 includes a driven gear 20, a driving gear 24 and an active rotating rod 22 inside, specifically, through the cooperation of the third screw 9 and the thread block 8, the horizontal movement of the lifting platform is achieved, and the flexibility of operation is increased.

[0024] Reference Figure 1-Figure 6The output end of the third motor 23 is fixedly connected to the active rotating rod 22, a driving gear 24 is arranged on the periphery of the active rotating rod 22, a driven gear 20 is arranged on the front side of the active rotating rod 22, and the outer surface of the driven gear 20 is meshed with the outer surface of the driving gear 24, and a driven rotating rod 19 is arranged on the outer surface of the other side of the driven gear 20. Specifically, the third motor drives the active rotating rod to rotate, and through the meshing of the driving gear and the driven gear, the driven rotating rod is driven to rotate synchronously, thereby realizing power transmission and speed control, ensuring stable operation of the system, and improving work efficiency. A moving plate 25 is provided on the outer surface of the other side of the driven rotating rod 19, and two groups of limit plates 28 and an electric cylinder 26 are provided on the outer surface of the other side of the moving plate 25, and the electric cylinder 26 is located between the two groups of limit plates 28. An electric cylinder output rod 27 is provided at the output end of the electric cylinder 26. Specifically, the driven rotating rod 19 is connected to the electric cylinder 26 through the moving plate to realize power transmission and conversion. The electric cylinder 26 runs stably under the constraint of the limit plate 28. The electric cylinder output rod 27 can accurately control the moving distance and speed of the moving plate to meet the operating requirements under complex working conditions and improve the flexibility and reliability of the system.

[0025] Reference Figure 1-Figure 6 A limiting rod 21 is arranged between the two groups of limiting plates 28, two groups of sliding sleeves 35 are arranged on the periphery of the limiting rod 21, a spring 30 is arranged between the two groups of sliding sleeves 35 and the corresponding limiting plates 28, and the spring 30 is arranged around the periphery of the limiting rod 21, two groups of first rotation limiting plates 31 are arranged on the outer surface of the other side of the electric cylinder output rod 27, and two groups of first rotation limiting rods 37 are arranged between the two groups of first rotation limiting plates 31. Specifically, the first rotation limiting plates and the first rotation limiting rods on the electric cylinder output rod 27 enhance the stability of the structure and the accuracy of the operation, thereby ensuring the stability and reliability of the entire system in complex operations. The two groups of first rotation limit rods 37 are surrounded by cross rotation rods 32, and the outer surface of the other side of the cross rotation rods 32 is provided with a limit ring 33. The outer surface of each group of sliding sleeves 35 away from the electric cylinder output rod 27 is provided with three groups of laser cleaning heads 29. The side wall of the other end of the sliding sleeve 35 is provided with two groups of second rotation limit plates 34, and a second rotation limit rod 36 is provided between each pair of second rotation limit plates 34. The inner surface of each group of limit rings 33 is rotatably connected to the outer surface of the corresponding second rotation limit rod 36. Specifically, the combination of the sliding sleeve 35 and the spring 30 not only provides stable support for the laser cleaning head 29, but also can provide buffering when necessary to protect the equipment from damage.

[0026] The implementation principle of the embodiment of the laser cleaning device for turbine stationary blades in the present application is as follows: When the laser cleaning device is used to clean the turbine stationary blades, the corresponding first motor 3 is started to rotate the first screw rod 4 and the second screw rod 6 connected to its output end. Since the corresponding first screw rod 4 and the second screw rod 6 rotate in opposite directions, the rotation of the first screw rod 4 and the second screw rod 6 can drive the corresponding two groups of movable clamps to move laterally toward or away from each other. The corresponding second motor 14 inside the motor chamber 2 is started to rotate the fourth screw rod 16 connected to its output end. Since the first threaded sleeve 17 rotates outside the fourth screw rod 16, the rotation of the fourth screw rod 16 can drive the corresponding first threaded sleeve 17 to move longitudinally, thereby achieving the purpose of moving the height of the laser cleaning head 29.

[0027] On the other hand, by starting the fourth motor 40 to rotate the third screw rod 9 connected to its output end, the rotation of the third screw rod 9 drives the corresponding threaded block 8 on its periphery to move horizontally, and when the laser cleaning head 29 is moved to the position corresponding to the stationary blade, the third motor 23 is started to rotate the active rotating rod 22 connected to its output end, and the rotation of the active rotating rod 22 drives the active gear 24 to rotate. Since the active gear 24 and the driven gear 20 are meshed with each other, the active gear 24 will drive the corresponding driven gear 20 to rotate, thereby achieving the purpose of adjusting the rotation angle of the laser cleaning head 29.

[0028] On the other hand, by starting the corresponding electric cylinder 26 to rotate the electric cylinder output rod 27 connected to its output end, the rotation of the electric cylinder output rod 27 drives the corresponding two groups of first rotation limit plates to move forward and backward. Since the two groups of cross-rotating rods 32 rotate around the corresponding first rotation limit rods 37, the forward and backward movement of the electric cylinder output rod 27 can drive the corresponding cross-rotating rods 32 to move inward or outward, and the other end of the two groups of cross-rotating rods 32 is rotationally connected to the corresponding sliding sleeve 35. The inward or outward movement of the cross-rotating rod 32 can drive the corresponding sliding sleeve 35 to slide on the outer surface of the limit rod 21. At the same time, the spring 30 connected to the periphery of the limit rod 21 can improve the flexibility of the sliding sleeve 35.

[0029] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser cleaning device for a turbine stator blade, comprising a cleaning platform (1), characterized in that: The top outer surface of the cleaning platform (1) is provided with two groups of motor chambers (2) and two groups of sliding grooves (11), and the two groups of sliding grooves (11) are arranged perpendicular to the motor chambers (2), two groups of motor fixing chambers (13) are arranged inside the two groups of motor chambers (2), and a second motor (14) is arranged inside each group of motor fixing chambers (13), and a transverse moving chamber (38) is arranged between the two groups of sliding grooves (11); The transverse movement chamber (38) comprises a first screw rod (4), a dividing plate (5) and a second screw rod (6); the dividing plate (5) is arranged between the first screw rod (4) and the second screw rod (6); the first screw rod (4) and the second screw rod (6) have opposite thread directions; and the first screw rod (4) and the second screw rod (6) are both provided with second threaded sleeves (39) on their outer peripheries.

2. The laser cleaning device for turbine stationary blades according to claim 1, characterized in that: The first motors (3) are arranged on the outer surfaces of the left and right sides of the cleaning platform (1), and the output ends of each group of the first motors (3) are fixedly connected to the corresponding first screw rods (4) and second screw rods (6), respectively.

3. The laser cleaning device for turbine stationary blades according to claim 2, characterized in that: Two sets of movable clamps (7) are arranged in parallel on the top outer surface of the transverse movable chamber (38), and two sets of sliding protrusions (12) are arranged on the bottom outer surfaces of the two sets of movable clamps (7), and the outer surfaces of the two sets of sliding protrusions (12) are slidably connected to the inner surfaces of the corresponding sliding grooves (11).

4. The laser cleaning device for turbine stationary blades according to claim 1, characterized in that: The output end of each group of the second motors (14) is provided with a motor output rod (15), the outer surface of the other side of each group of the motor output rods (15) is provided with a fourth screw rod (16), the outer periphery of the fourth screw rod (16) is rotatably connected to a first threaded sleeve (17), a lifting platform (10) is provided on the outer periphery of each pair of the first threaded sleeves (17), a fourth motor (40) is provided on the outer surface of one side of the left lifting platform (10), the output end of the fourth motor (40) is provided with a third screw rod (9), and the other end of the third screw rod (9) is rotatably connected to another group of the lifting platforms (10).

5. The laser cleaning device for turbine stationary blades according to claim 4, characterized in that: The third screw rod (9) is rotatably connected to a threaded block (8) at its periphery, a third motor (23) is provided on the left outer surface of the threaded block (8), and the threaded block (8) includes a driven gear (20), a driving gear (24) and a driving rotating rod (22) inside.

6. The laser cleaning device for turbine stationary blades according to claim 5, characterized in that: The output end of the third motor (23) is fixedly connected to the active rotating rod (22); the active gear (24) is disposed on the periphery of the active rotating rod (22); a driven gear (20) is disposed on the front side of the active rotating rod (22); the outer surface of the driven gear (20) is meshed with the outer surface of the active gear (24); and a driven rotating rod (19) is disposed on the outer surface of the other side of the driven gear (20).

7. The laser cleaning device for turbine stationary blades according to claim 6, characterized in that: A moving plate (25) is provided on the outer surface of the other side of the driven rotating rod (19), two groups of limit plates (28) and an electric cylinder (26) are provided on the outer surface of the other side of the moving plate (25), and the electric cylinder (26) is located between the two groups of limit plates (28), and an electric cylinder output rod (27) is provided at the output end of the electric cylinder (26).

8. The laser cleaning device for turbine stationary blades according to claim 7, characterized in that: A limit rod (21) is arranged between the two groups of limit plates (28), two groups of sliding sleeves (35) are arranged on the periphery of the limit rod (21), a spring (30) is arranged between the two groups of sliding sleeves (35) and the corresponding limit plates (28), and the spring (30) is arranged around the periphery of the limit rod (21), two groups of first rotation limit plates (31) are arranged on the outer surface of the other side of the electric cylinder output rod (27), and two groups of first rotation limit rods (37) are arranged between the two groups of first rotation limit plates (31).

9. The laser cleaning device for turbine stationary blades according to claim 8, characterized in that: The two groups of the first rotation limit rods (37) are surrounded by a cross rotation rod (32), and the outer surface of the other side of the cross rotation rod (32) is provided with a limit ring (33). The outer surface of each group of the sliding sleeves (35) away from the electric cylinder output rod (27) is provided with three groups of laser cleaning heads (29). The side wall of the other end of the sliding sleeve (35) is provided with two groups of second rotation limit plates (34), and a second rotation limit rod (36) is provided between each pair of the second rotation limit plates (34). The inner surface of each group of the limit rings (33) is rotatably connected to the outer surface of the corresponding second rotation limit rod (36).

Images