A self-cleaning device for wind turbine nacelle

Abstract

This invention relates to the field of wind turbine accessory technology, specifically a self-cleaning device for the outer casing of a wind turbine generator set. The device includes a cabinet with a fixed platform on top. It also includes a hovering cleaning structure movably mounted on the platform, comprising a drone body with two sets of variable-position rotor mechanisms. The drone body is connected to an extension magnetic suction mechanism, and a pod is mounted at the lower end of the drone body. A spray head is installed in the middle of the pod, and the pod is fixedly connected to two sets of magnetic wiring mechanisms. A pressurized liquid supply structure connected to the cabinet includes a pressurized pump and a pipe-releasing mechanism. This invention safely cleans the outer casing of the wind turbine generator set by cooperating with the hovering cleaning structure and the pressurized liquid supply structure, preventing personnel from falling from heights. The coordinated operation of multiple drone bodies enhances the stability, safety, and applicability of the invention during high-wind operations.

Description

Technical Field

[0001] This invention relates to the field of wind turbine accessories technology, specifically a self-cleaning device for the casing of a wind turbine generator set. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current (AC). A wind turbine typically consists of a rotor, generator, directional control unit, tower, speed limiting safety mechanism, and energy storage device. Wind turbines operate outdoors and require regular cleaning over time to ensure optimal performance. Without cleaning, the tower will corrode and its lifespan will be shortened.

[0003] Existing technologies generally involve personnel working at heights for cleaning operations, which is extremely dangerous. Furthermore, since wind turbines are typically installed in areas with abundant wind resources, these areas often experience strong winds. This can cause equipment and personnel to lose their stability when encountering strong winds at high altitudes, resulting in equipment or personnel colliding with the tower. Summary of the Invention

[0004] The purpose of this invention is to provide a self-cleaning device for the casing of wind turbine generator sets, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A self-cleaning device for the casing of a wind turbine generator set includes a cabinet, a stop platform fixedly installed on the top of the cabinet, a transformer power supply module connected to the cabinet, and a cable electrically connected to the transformer power supply module. The device also includes:

[0007] The hovering cleaning structure is movably installed on a landing platform. The hovering cleaning structure includes a drone body movably installed on the landing platform. The drone body is electrically connected to a cable. Two sets of variable-position rotor mechanisms are installed on the drone body. An extension magnetic suction mechanism is installed on the top of the drone body. A pod is assembled and installed at the lower end of the drone body. A spray head is installed in the middle of the pod. Two sets of symmetrically arranged magnetic suction wiring mechanisms are fixedly connected to the pod. The magnetic suction wiring mechanisms are located below the variable-position rotor mechanisms.

[0008] A pressurized liquid supply structure connected to the cabinet includes a pressurized pump fixedly installed inside the cabinet. The outlet end of the pressurized pump is equipped with a pipe-laying mechanism, which is connected to the spray head.

[0009] As a further improvement of the present invention: the variable rotor mechanism includes a frame fixedly connected to the outer wall of the UAV body, a first dual-output shaft motor fixedly connected to the frame, a first gear fixedly connected to the output end of the first dual-output shaft motor, a limit guide wheel fixedly connected to the frame, a cantilever rotatably connected to the limit guide wheel, two sets of second gears coaxially fixedly connected to the cantilever and connected to the first gear, a first motor fixedly connected to the cantilever, and a propeller fixedly connected to the output shaft of the first motor.

[0010] As a further improvement of the present invention: the extended magnetic attraction mechanism includes a track fixedly installed on the top of the drone body, an electric telescopic frame fixedly connected to the track, a sliding frame fixedly connected to the electric telescopic frame, a rotating frame hinged to the sliding frame, a first electromagnet fixedly connected to the rotating frame, an elastic protective sleeve fixedly installed at the end of the first electromagnet away from the rotating frame, a motor frame hinged to the sliding frame, a second motor fixedly connected to the motor frame, a lead screw fixedly connected to the output shaft of the second motor, a threaded sleeve threadedly connected to the lead screw, and the threaded sleeve hinged to the rotating frame.

[0011] As a further improvement of the present invention: the magnetic connection mechanism includes a housing fixedly connected to the pod, a third motor fixedly installed inside the housing, a winding wheel fixedly connected to the output shaft of the third motor, a pull wire wound on the winding wheel, and a second electromagnet fixedly connected to the pull wire.

[0012] As a further improvement of the present invention: the pipe-laying mechanism includes two sets of fourth motors fixedly installed inside the cabinet. The output shaft of the fourth motor is fixedly connected to a friction wheel. A set of flexible hoses is provided between the two sets of friction wheels. The flexible hoses are connected to a pressure pump and are fixedly connected to the pressure pump. The flexible hoses are also connected to a spray head.

[0013] As a further improvement of the present invention: the elastic protective sleeve is a hollow frame structure in the middle.

[0014] As a further improvement of the present invention: the water inlet of the pressurizing pump is located outside the cabinet, and a flange is provided on the water inlet of the pressurizing pump.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When using only one drone unit for cleaning operations, the drone's rotors, in conjunction with a displacement rotor mechanism mounted on the drone unit, provide the lift required for the drone to detach from the landing platform and take off. The drone unit moves the spray heads and magnetic cable-laying mechanism by driving the pod. During this process, a pipe-laying mechanism lays the pipes, and a pressure pump connected to an external water supply pipe pressurizes the water and supplies it to the pipe-laying mechanism, allowing the spray heads to spray water onto the wind turbine generator casing to clean away dust. If the wind is too strong and the drone unit cannot maintain its stable posture, an extended magnetic mechanism is used to magnetically attach the drone unit to the wind turbine generator casing to secure it. When using multiple drone units for cleaning operations, as two drone units approach each other, the displacement rotor mechanism flips and folds to provide space for the magnetic cable-laying mechanisms to contact each other. Then, the magnetic cable-laying mechanisms under different drone units perform magnetic docking and cable-laying operations. Afterward, the displacement rotor mechanism resets, and the drone unit is repositioned. The main body provides lift. As each set of magnetic connection mechanisms is connected in sequence, the pods at the lower end of each drone body are connected to form a ring-like structure. At this time, the drone bodies form a whole under the connection of the magnetic connection mechanisms. If the drone body is unstable due to wind, the mutual pulling of the magnetic connection mechanisms can help stabilize the drone body quickly. The extended magnetic connection mechanism can magnetically attract the wind turbine shell to fix part of the drone body, thus forming an anchor point in strong winds and preventing the drone body from being blown away during operation. At the same time, the extended magnetic connection mechanism extends and points towards the wind turbine shell, so that if the drone body is blown towards the wind turbine shell, the extended magnetic connection mechanism will contact the wind turbine shell before the drone body, preventing the drone body from colliding with the wind turbine shell. Furthermore, the magnetic connection mechanism performs cable laying and reeling operations to adjust the maximum distance between each set of drone bodies, so that the invention can clean the shell, which has a decreasing diameter from bottom to top. This invention utilizes a combination of a hovering cleaning structure and a pressurized liquid supply structure to enable the drone body to move the spray head via a pod, safely cleaning the outer shell of a wind turbine generator. This prevents personnel from falling from heights and protects their safety. Furthermore, by using a single drone body to magnetically attach to the wind turbine generator shell and multiple drone bodies to work together to resist wind, the stability and safety of this invention during high winds are improved. It also facilitates cleaning wind turbine generator shells with varying diameters, enhancing the applicability of this invention. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the cabinet, pressurizing pump, and pipe laying mechanism of the present invention.

[0020] Figure 4 This is a three-dimensional structural diagram of the air-cooled cleaning structure of the present invention.

[0021] Figure 5 This is a three-dimensional structural diagram of the air-cooled cleaning structure of the present invention from another perspective.

[0022] Figure 6 This is a schematic diagram of the magnetic connection mechanism of the present invention.

[0023] Figure 7 This is a three-dimensional structural schematic diagram of the variable displacement rotor mechanism of the present invention.

[0024] Figure 8 This is a three-dimensional structural diagram of the extended magnetic attraction mechanism of the present invention.

[0025] In the diagram: 1. Cabinet; 2. Wireless communication module; 3. Stop platform; 4. Transformer power supply module; 5. Cable; 6. Aerial cleaning structure; 7. UAV body; 8. Variable rotor mechanism; 9. Extension magnetic suction mechanism; 10. Pod; 11. Spray head; 12. Magnetic wiring mechanism; 13. Pressurized liquid supply structure; 14. Pressurized pump; 15. Pipe laying mechanism; 16. Frame; 17. First dual-shaft motor; 18. First gear; 19. Limiting guide wheel; 20. Cantilever; 21. Second gear; 22. First motor; 23. Propeller; 24. Track; 25. Electric telescopic frame; 26. Sliding frame; 27. Rotating frame; 28. First electromagnet; 29. ​​Elastic protective sleeve; 30. Motor frame; 31. Second motor; 32. Lead screw; 33. Threaded sleeve; 34. Housing; 35. Third motor; 36. Winding wheel; 37. Pull wire; 38. Second electromagnet; 39. Fourth motor; 40. Friction wheel; 41. Hose; 42. Flange. Detailed Implementation

[0026] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0027] Example 1, see Figures 1-8 As shown, a self-cleaning device for the casing of a wind turbine generator set includes a cabinet 1, a wireless communication module 2 fixedly installed on the outer wall of the cabinet 1, the wireless communication module 2 being communicatively connected to a remote control center, a stop platform 3 fixedly installed on the top of the cabinet 1, a transformer power supply module 4 connected to the cabinet 1, and a cable 5 electrically connected to the transformer power supply module 4. The device also includes:

[0028] A hovering cleaning structure 6 is movably installed on a landing platform 3. The hovering cleaning structure 6 includes a drone body 7 movably installed on the landing platform 3. The drone body 7 controls its flight attitude and direction by adjusting the rotation speed of different rotors. The drone body 7 integrates a wireless communication control module, a flight control module, GPS, an inertial measurement unit, a camera module, and an independent power supply module. The drone body 7 is externally equipped with a power unit and rotors that are powered by the power unit. The drone body 7 is electrically connected to a cable 5. Two sets of variable rotor mechanisms 8 are installed on the drone body 7. An extension magnetic attraction mechanism 9 is installed on the top of the drone body 7. A pod 10 is assembled and installed at the lower end of the drone body 7. A spray head 11 is installed in the middle of the pod 10. Two sets of symmetrically arranged magnetic attraction wiring mechanisms 12 are fixedly connected to the pod 10. The magnetic attraction wiring mechanisms 12 are located below the variable rotor mechanisms 8.

[0029] A pressurized liquid supply structure 13 is connected to the cabinet 1. The pressurized liquid supply structure 13 includes a pressurized pump 14 fixedly installed in the cabinet 1. A pipe laying mechanism 15 is installed at the water outlet end of the pressurized pump 14. The pipe laying mechanism 15 is connected to the spray head 11.

[0030] When only one set of drone bodies 7 is used for cleaning operations, the rotors of the drone body 7, in conjunction with the displacement rotor mechanism 8 mounted on the drone body 7, provide the lift required for the drone body 7 to rise, allowing the drone body 7 to detach from the landing platform 3 and take off. The drone body 7 moves the spray head 11 and the magnetic connection mechanism 12 by driving the pod 10. During this process, the pipe laying mechanism 15 performs pipe laying operations. The pressurized pump 14 is connected to an external water supply pipe, and the pressurized pump 14 pressurizes the water and supplies it into the pipe laying mechanism 15, so that the spray head 11 sprays water to clean the outer casing of the wind turbine generator, thereby rinsing it. Dust is brushed off the outer casing of the wind turbine. If the wind is too strong and the drone body 7 cannot maintain its stable attitude, the extended magnetic attraction mechanism 9 is used to magnetically attract the wind turbine casing to fix the drone body 7. If multiple drone bodies 7 are used for cleaning, as two drone bodies 7 approach each other, the displacement rotor mechanism 8 flips and folds to provide space for the magnetic wiring mechanism 12 to contact each other. Then, the magnetic wiring mechanisms 12 under different drone bodies 7 perform magnetic docking and wiring operations. Afterward, the displacement rotor mechanism 8 resets. The new system provides lift to the main body 7 of the drone. As the magnetic connection mechanisms 12 are connected in sequence, the pods 10 at the lower ends of the main bodies 7 are connected into a ring-like structure. At this time, the main bodies 7 of the drone form a whole under the connection of the magnetic connection mechanisms 12. If the drone body 7 is unstable due to wind, the mutual pulling of the magnetic connection mechanisms 12 can help stabilize the drone body 7 quickly. The extended magnetic connection mechanism 9 can be used to magnetically attract the outer shell of the wind turbine to fix part of the drone body 7, thus making it more stable in strong winds. Anchor points are formed to prevent the drone body 7 from being blown away during operation. At the same time, the extension magnetic attraction mechanism 9 extends and extends in the direction of the wind turbine generator shell. This ensures that if the drone body 7 is blown towards the wind turbine generator shell, the extension magnetic attraction mechanism 9 will contact the wind turbine generator shell before the drone body 7, thus preventing the drone body 7 from colliding with the wind turbine generator shell. Furthermore, the magnetic connection mechanism 12 performs wire laying and reeling operations to adjust the maximum distance between each group of drone bodies 7, so that the invention can perform cleaning operations on the shell, which has a decreasing diameter from bottom to top. This invention utilizes the interplay between the hovering cleaning structure 6 and the pressurized liquid supply structure 13 to enable the drone body 7 to move the spray head 11 via the pod 10, safely cleaning the wind turbine generator casing and preventing personnel from falling from heights, thus protecting personnel safety. Furthermore, by using a single drone body 7 to magnetically attach to the wind turbine generator casing and multiple drone bodies 7 working together to resist wind, the stability and safety of this invention during high winds are improved. It also facilitates cleaning wind turbine generator casings with varying diameters, enhancing the applicability of this invention.

[0031] In one embodiment, the variable rotor mechanism 8 includes a frame 16 fixedly connected to the outer wall of the UAV body 7. A first dual-output shaft motor 17 is fixedly connected to the frame 16. A first gear 18 is fixedly connected to the output end of the first dual-output shaft motor 17. A limiting guide wheel 19 is fixedly connected to the frame 16. A cantilever 20 is rotatably connected to the limiting guide wheel 19. Two sets of second gears 21 connected to the first gear 18 are coaxially fixedly connected to the cantilever 20. A first motor 22 is fixedly connected to the cantilever 20. A propeller 23 is fixedly connected to the output shaft of the first motor 22. The first dual-output shaft motor 17 drives the first gear 18 to rotate through its output end. The first gear 18 drives the second gear 21 to rotate through meshing. The second gear 21 drives the cantilever 20 to rotate along the limit guide wheel 19, thereby changing the tilt angle between the cantilever 20 and the propeller 23. When it is necessary to make room for the magnetic connection mechanism 12 to dock, the cantilever 20 flips and moves the propeller 23 to a position away from the docking path to avoid the propeller 23 blocking the docking operation of the magnetic connection mechanism 12. After docking is completed, the cantilever 20 rotates in the opposite direction to reset, and the first motor 22 drives the propeller 23 to rotate. The rotating propeller 23 provides lift to the main body of the UAV 7 again.

[0032] In one embodiment, the extended magnetic attraction mechanism 9 includes a track 24 fixedly installed on the top of the drone body 7. The track 24 is fixedly connected to an electric telescopic frame 25. The electric telescopic frame 25 is fixedly connected to a sliding frame 26. The sliding frame 26 is hinged to a rotating frame 27. The rotating frame 27 is fixedly connected to a first electromagnet 28. An elastic protective sleeve 29 is fixedly installed at the end of the first electromagnet 28 away from the rotating frame 27. The sliding frame 26 is hinged to a motor frame 30. The motor frame 30 is fixedly connected to a second motor 31. The output shaft of the second motor 31 is fixedly connected to a lead screw 32. The lead screw 32 is threadedly connected to a threaded sleeve 33. The threaded sleeve 33 is hinged to the rotating frame 27. The electric telescopic frame 25 pushes the sliding frame 26 to move along the track 24, thereby adjusting the overall extension length of the extension magnetic attraction mechanism 9. The second motor 31 drives the lead screw 32 to rotate. The lead screw 32 drives the threaded sleeve 33 to move through the threaded engagement. The threaded sleeve 33 pushes the rotating frame 27 to deflect, thereby adjusting the orientation of the first electromagnet 28. When the first electromagnet 28 is energized, it can generate an adsorption force on the steel shell of the wind turbine generator set. With the help of the elastic protective sleeve 29 to buffer the collision, the main body of the drone 7 is fixed in the designated position of the shell, which makes it easy for the spray head 11 to carry out cleaning operations stably and stabilize the attitude of the main body of the drone 7.

[0033] In one embodiment, the magnetic connection mechanism 12 includes a housing 34 fixedly connected to the pod 10. A third motor 35 is fixedly installed inside the housing 34. The output shaft of the third motor 35 is fixedly connected to a winding wheel 36. A pull wire 37 is wound on the winding wheel 36, and a second electromagnet 38 is fixedly connected to the pull wire 37. When the two sets of UAV bodies 7 have docked and approached each other, the third motor 35 drives the winding wheel 36 to release the wire, and the second electromagnet 38 is energized, which can attract and dock with the second electromagnet 38 in the other set of magnetic connection mechanisms 12, thereby completing the pull connection of the two sets of UAV bodies 7. By adjusting the length of the released wire, it can adapt to the spacing requirements of different positions and fit the wind turbine generator shell with a diameter that gradually decreases from bottom to top.

[0034] In one embodiment, the pipe-laying mechanism 15 includes two sets of fourth motors 39 fixedly installed inside the cabinet 1. The output shafts of the fourth motors 39 are fixedly connected to friction wheels 40. A hose 41 is disposed between the two sets of friction wheels 40. The hose 41 is connected to a pressure pump 14 and is also fixedly connected to a spray head 11. The fourth motors 39 drive the friction wheels 40 to rotate. The two rotating friction wheels 40 cooperate to clamp the hose 41. As the drone body 7 takes off, the friction wheels release the hose 41 step by step, providing cleaning water as the drone body 7 moves. For storage, rotating the friction wheels 40 in the opposite direction retracts the hose 41 back into the cabinet 1.

[0035] In one embodiment, the elastic protective sleeve 29 is a hollow frame structure. This hollow frame structure ensures the cushioning and protective effect of the elastic protective sleeve 29 while reducing the overall weight and the load on the drone body 7.

[0036] Example 2, based on Example 1, see [link / reference] Figures 1-3 The water inlet of the booster pump 14 is located outside the cabinet 1, and a flange 42 is provided on the water inlet of the booster pump 14. The flange 42 can be used to easily connect and fix the water inlet of the booster pump 14 to the external water supply pipeline, improving the convenience of installation and docking.

[0037] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A self-cleaning device for the casing of a wind turbine generator set, comprising a cabinet, a stop platform fixedly installed on the top of the cabinet, the cabinet being connected to a transformer power supply module, the transformer power supply module being electrically connected to a cable, characterized in that... Also includes: The hovering cleaning structure is movably installed on a landing platform. The hovering cleaning structure includes a drone body movably installed on the landing platform. The drone body is electrically connected to a cable. Two sets of variable-position rotor mechanisms are installed on the drone body. An extension magnetic suction mechanism is installed on the top of the drone body. A pod is assembled and installed at the lower end of the drone body. A spray head is installed in the middle of the pod. Two sets of symmetrically arranged magnetic suction wiring mechanisms are fixedly connected to the pod. The magnetic suction wiring mechanisms are located below the variable-position rotor mechanisms. A pressurized liquid supply structure connected to the cabinet includes a pressurized pump fixedly installed inside the cabinet. The outlet end of the pressurized pump is equipped with a pipe-laying mechanism, which is connected to the spray head.

2. The self-cleaning device for the casing of a wind turbine generator set according to claim 1, characterized in that, The variable rotor mechanism includes a frame fixedly connected to the outer wall of the UAV body, a first dual-output shaft motor fixedly connected to the frame, a first gear fixedly connected to the output end of the first dual-output shaft motor, a limit guide wheel fixedly connected to the frame, a cantilever rotatably connected to the limit guide wheel, two sets of second gears coaxially fixedly connected to the cantilever and connected to the first gear, a first motor fixedly connected to the cantilever, and a propeller fixedly connected to the output shaft of the first motor.

3. A self-cleaning device for the casing of a wind turbine generator set according to claim 1, characterized in that, The extended magnetic attraction mechanism includes a track fixedly installed on the top of the drone body, an electric telescopic frame fixedly connected to the track, a sliding frame fixedly connected to the electric telescopic frame, a rotating frame hinged to the sliding frame, a first electromagnet fixedly connected to the rotating frame, an elastic protective sleeve fixedly installed at the end of the first electromagnet away from the rotating frame, a motor frame hinged to the sliding frame, a second motor fixedly connected to the motor frame, a lead screw fixedly connected to the output shaft of the second motor, a threaded sleeve threadedly connected to the lead screw, and the threaded sleeve hinged to the rotating frame.

4. A self-cleaning device for the casing of a wind turbine generator set according to claim 1, characterized in that, The magnetic connection mechanism includes a housing fixedly connected to the pod, a third motor fixedly installed inside the housing, a winding wheel fixedly connected to the output shaft of the third motor, a pull wire wound on the winding wheel, and a second electromagnet fixedly connected to the pull wire.

5. A self-cleaning device for the casing of a wind turbine generator set according to claim 1, characterized in that, The pipe-laying mechanism includes two sets of fourth motors fixedly installed inside the cabinet. The output shaft of each fourth motor is fixedly connected to a friction wheel. A set of flexible hoses is provided between the two sets of friction wheels. The flexible hoses are connected to a pressure pump and are fixedly connected to the pressure pump. The flexible hoses are also connected to a spray head.

6. A self-cleaning device for the casing of a wind turbine generator set according to claim 3, characterized in that, The elastic protective sleeve is a hollow frame structure in the middle.

7. A self-cleaning device for the casing of a wind turbine generator set according to claim 5, characterized in that, The inlet of the booster pump is located outside the cabinet, and a flange is provided on the inlet of the booster pump.

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