An ice removal device for a wind turbine blade and an ice removal method thereof

Abstract

The present invention discloses a deicing device for a wind turbine blade and a deicing method thereof, which relates to the technical field of wind turbine blade deicing. The deicing device for the wind turbine blade includes a tower and a hub arranged on a wind turbine generator body, and a plurality of blade bodies are arranged on the hub. The side wall of the tower is connected with a U-shaped plate through a lifting mechanism, and a heat preservation box is fixedly connected to the side wall of the U-shaped plate. A plurality of solar heating tubes are fixedly inserted into the side wall of the heat preservation box. The deicing device for the wind turbine blade and the deicing method thereof are convenient for automatically detecting the icing condition on the surface of the blade body. If icing occurs, hot water heated by solar energy can be sprayed onto the surface of the blade body through a nozzle to melt the ice. At the same time, water is sprayed for deicing comprehensively from top to bottom. And after melting is completed, the melted ice can be scraped and cleaned by a rubber block, so that the deicing efficiency is higher and the effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of ice removal for wind turbine blades, and specifically to an ice removal device for wind turbine blades and an ice removal method thereof. Background Technique

[0002] A wind turbine is a power device that converts wind energy into mechanical work. The mechanical work drives the rotor to rotate, and finally outputs alternating current. It has now been widely used in areas with high-speed airflow characteristics such as the seaside, valleys, and high altitudes. At the same time, due to the special temperature of its working environment, the fan blades of the wind turbine are easily attached by liquids generated by the airflow, and are extremely prone to freezing and ice crystal formation, increasing the equipment burden and danger.

[0003] Currently, when removing ice from the blades of a wind turbine, ice removal work is often carried out by using a drone. That is, a deicing agent is equipped on the drone, and the deicing agent is sprayed onto the outer wall of the blade by means of pumping. This method has poor ice removal effect, and when removing ice from blades in different orientations, it is difficult to control, with low accuracy, resulting in low overall ice removal efficiency. Moreover, it is not convenient to detect the icing condition of the blades and it is not easy to be discovered in time, thus affecting the ice removal effect. Summary of the Invention

[0004] The purpose of the present invention is to provide an ice removal device for wind turbine blades and an ice removal method thereof to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solution: An ice removal device for a wind turbine blade, including a tower and a hub on the wind turbine generator body, and a plurality of blade bodies are arranged on the hub. The side wall of the tower is connected with a U-shaped plate through a lifting mechanism, and a heat preservation box is fixedly connected to the side wall of the U-shaped plate. A plurality of solar heating tubes are fixedly inserted into the side wall of the heat preservation box, and an electric heater and a temperature sensor are arranged in the heat preservation box. The side wall of the U-shaped plate is fixedly connected with a water tank, and a connecting pipe is fixedly connected between the water tank and the heat preservation box. A first one-way valve is arranged in the connecting pipe, and two symmetrically arranged support plates are fixedly connected to the top of the heat preservation box. The side wall of each support plate is rotatably connected with a hollow rotating cover through a rotating shaft, and a plurality of arrayed spray heads are fixedly connected to the bottom of the rotating cover. The bottom of each rotating cover is connected with a plurality of arrayed rubber blocks through a telescopic mechanism, and the bottom of the rubber block is provided with a rounded corner. A hot water pipe is fixedly connected to the top of the heat preservation box, and a second one-way valve is arranged in the hot water pipe. The upper end of the hot water pipe is fixedly connected with two hoses, and the other ends of the hoses are fixedly inserted into the top of the rotating cover. A moving plate is inserted into the side wall of the heat preservation box through a reset mechanism, and two symmetrically arranged protective covers are connected to the side wall of the U-shaped plate through a moving mechanism. The solar heating tubes are inserted into the side wall of the protective cover. The rotation of the rotating shaft is driven by a driving mechanism, and a detection mechanism for detecting the icing condition on the surface of the blade body is arranged at the bottom of each rotating cover.

[0006] Preferably, the detection mechanism includes a plurality of arrayed L-shaped brackets fixedly connected to the bottom of the rotating cover, and two symmetrically arranged fixing blocks are fixedly connected to the side wall of each L-shaped bracket. A moving rod is inserted into the side wall of the fixing block, and one end of the moving rod is fixedly connected with a pull rope. The other end of the pull rope penetrates through the side wall of the fixing block and is fixedly connected with a stop disk, and the other end of the moving rod of the pull rope is fixedly connected with a moving disk. A first spring is sleeved on the side wall of the moving rod. A distance sensor is fixedly connected to the top of one of the fixing blocks, and the movement of the moving rod is pushed by a pushing mechanism.

[0007] Preferably, the pushing mechanism includes a plurality of arrayed first pushing rods fixedly inserted into the bottom of the rotating cover, and the lower ends of the first pushing rods penetrate through the bottom of the L-shaped bracket. A fixing ring is fixedly sleeved on the side wall of the first pushing rod, and a second spring is sleeved on the side wall of the first pushing rod. The bottom of the L-shaped bracket is fixedly connected with a first connecting block, and the side wall of the first connecting block is rotatably connected with an L-shaped plate through a rotating pin. A second connecting block is fixedly connected to the side wall of the first pushing rod, and a pushing pin is fixedly connected to the side wall of the second connecting block. A first sliding groove is formed in the side wall of the L-shaped plate, and the pushing pin is inserted into the first sliding groove.

[0008] Preferably, the telescopic mechanism includes two symmetrically arranged first sleeve rods fixedly connected to the tops of the rubber blocks, and a first sleeve is sleeved on the side wall of each first sleeve rod. The upper end of the first sleeve is fixed to the bottom of the rotating cover, and a reset spring is sleeved on the side wall of each first sleeve rod.

[0009] Preferably, the driving mechanism includes gears fixedly sleeved on the side walls of the respective rotating shafts, and a moving assembly is arranged on the side wall of the U-shaped plate. A moving block is connected to the moving assembly, and an L-shaped connecting frame is fixedly connected to the top of the moving block. An L-shaped block is fixedly connected to the top of the connecting frame, and a rack is fixedly connected to the top of the L-shaped block. A second push rod is fixedly connected to the side wall of the moving block, and a limiting mechanism for limiting the rotating shaft is arranged on the side wall of the support plate.

[0010] Preferably, the limiting mechanism includes a plurality of hemispherical holes arranged in an array on the side walls of the respective rotating shafts, and a support block is fixedly connected to the side wall of each support plate. Two symmetrically arranged first T-shaped guide rods are penetrated through the support block, and a sliding block is fixedly connected to the upper end of the first T-shaped guide rod. A plug pin is fixedly connected to the top of the sliding block, and a third spring is sleeved on the side wall of each first T-shaped guide rod.

[0011] Preferably, the reset mechanism includes a first connecting plate fixedly connected to the top of the moving plate, and two symmetrically arranged second T-shaped guide rods are fixedly connected to the side wall of the first connecting plate. A second connecting plate is sleeved on the side wall of the second T-shaped guide rod, and the second connecting plate is fixed to the top of the heat preservation box. A fourth spring is sleeved on the side wall of each second T-shaped guide rod.

[0012] Preferably, the moving mechanism includes two symmetrically arranged third T-shaped guide rods inserted into the side walls of the respective protective covers, and two symmetrically arranged fixing plates are fixedly connected to the side wall of the U-shaped plate. One end of the third T-shaped guide rod is fixed to the side wall of the fixing plate, and a fifth spring is sleeved on the side wall of each third T-shaped guide rod. An installation block is fixedly connected to the side wall of the tower, and a V-shaped plate is fixedly connected to the side wall of the installation block. The V-shaped plate includes an inclined surface, and a push block is fixedly connected to the bottom of each protective cover.

[0013] Preferably, the lifting mechanism includes two symmetrically arranged second chutes opened at the bottom of the protective cover, and a threaded pipe and a second sleeve are inserted into the second chutes. The upper ends of the threaded pipe and the second sleeve are fixed to the bottom of the U-shaped plate, and an installation plate is fixedly connected to the side wall of the tower. A threaded rod is rotatably connected to the top of the installation plate, and the threaded rod is threadedly connected to the threaded pipe. A second sleeve rod is fixedly connected to the top of the installation plate, and the second sleeve rod is inserted into the second sleeve. A motor is fixedly connected to the bottom of the installation plate, and the output end of the motor is fixed to the lower end of the threaded rod.

[0014] A de-icing method for a wind turbine blade, using the above-mentioned de-icing device for a wind turbine blade, includes the following steps:

[0015] S1: Through the setting of the solar heating tube, solar energy can be absorbed and utilized to heat the water in the heat preservation box, which is more energy-saving and environmentally friendly. And when the temperature is not enough, the internal electric heater can be used for auxiliary heating. When de-icing the blade body, the lifting mechanism drives the U-shaped plate to move upward. At the same time, the protective cover is driven to move upward, and the pushing block is driven to move upward synchronously and gradually separate from the inclined surface. At this time, the two protective covers can move away from each other under the action of the fifth spring to open, so as to expose the internal U-shaped plate, etc., to ensure the subsequent normal de-icing operation. When the U-shaped plate moves to the top of the side wall of the blade body, the moving component is started to drive the moving block to move towards the U-shaped plate, and the rack is driven to move through the connecting frame and the L-shaped block;

[0016] S2: When the rack meshes with the gear, the rotating shaft is pushed to rotate, so that the two rotating covers rotate towards each other, and the nozzles face the surface of the blade body. When the moving block continues to move, the second push rod abuts against the side wall of the moving plate, so as to push the moving plate into the heat preservation box. At the same time, the fourth spring is compressed, and the hot water in the heat preservation box can be extruded. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the hot water in the heat preservation box is extruded and enters the rotating cover through the hot water pipe and the hose and is sprayed on the surface of the blade body through the nozzles to melt the ice;

[0017] S3: At the same time, under the action of water pressure, the first push rod is pushed to move towards the blade body and abut against its surface. At the same time, the second spring is compressed. And when the first push rod moves, the push pin is driven to slide in the first chute through the second connecting block, so as to push the L-shaped plate to rotate clockwise along the rotating pin and abut against the pull rope, so as to pull the moving rod and the moving disk to move. At the same time, the first spring is compressed. At this time, the distance of the moving disk is detected by the distance sensor;

[0018] S4: If the surface of the blade body is frozen, after a period of time, the ice will melt. At this time, the first push rod will continue to move, so that the L-shaped plate will continue to push the pull rope, so as to continue to pull the moving rod and the moving disk to move, making the distance of the moving disk detected by the distance sensor smaller. If the surface of the blade body is not frozen, after a period of time, the distance of the moving disk detected by the distance sensor will not change. Therefore, before comprehensively de-icing the surface of the blade body from top to bottom, the icing condition of the surface of the blade body can be detected;

[0019] S5: If icing occurs, drive the U-shaped plate to gradually move downward through the lifting mechanism, so that the nozzle can de-ice the surface of the blade body. Moreover, under the action of the return spring, the rubber block can be made to abut against the surface of the blade body. When the U-shaped plate moves downward, the rubber block can be driven to move downward synchronously, so that the melted ice can be scraped and cleaned, making the de-icing more efficient and effective. If there is no icing, the rotating cover is rotated and reset through the drive mechanism, and the U-shaped plate is moved downward and reset through the lifting mechanism, thus avoiding waste of hot water and being more energy-saving and environmentally friendly;

[0020] S6: When the U-shaped plate moves downward, it drives the protective cover and the push block to move downward. When the push block abuts against the inclined surface, it pushes the two protective covers to move closer to each other. At the same time, the fifth spring is compressed, so as to close the two protective covers and provide sealed protection for the internal U-shaped plate and the like, ensuring its use effect and service life. Moreover, when the protective cover moves, it can scrape and clean the surface of the solar heating tube, ensuring its solar absorption efficiency and effect.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) For this wind power blade de-icing device and its de-icing method, by setting up a drive mechanism, etc., through the setting of the solar heating tube, solar energy can be absorbed and utilized to heat the water in the heat preservation box, which is more energy-saving and environmentally friendly. Moreover, when the temperature is insufficient, auxiliary heating can be carried out through the internal electric heater. When de-icing the blade body is required, drive the U-shaped plate to move upward through the lifting mechanism. At the same time, the two protective covers can be opened away from each other under the action of the moving mechanism. When the U-shaped plate moves to the top of the side wall of the blade body, start the moving component to drive the moving block to move towards the U-shaped plate, and drive the rack to move through the connecting frame and the L-shaped block. When the rack meshes with the gear, the rotating shaft is pushed to rotate, so that the two rotating covers rotate closer to each other and the nozzles face the surface of the blade body. When the moving block continues to move, the second push rod abuts against the side wall of the moving plate, thus pushing the moving plate to move into the heat preservation box. At the same time, the fourth spring is compressed, and the hot water in the heat preservation box can be extruded. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the hot water in the heat preservation box is extruded and enters the rotating cover through the hot water pipe and the hose and is sprayed on the surface of the blade body through the nozzle to melt the ice. At the same time, drive the U-shaped plate to gradually move downward through the lifting mechanism, so that the nozzle can de-ice the surface of the blade body. Moreover, under the action of the return spring, the rubber block can be made to abut against the surface of the blade body. When the U-shaped plate moves downward, the rubber block can be driven to move downward synchronously, so that the melted ice can be scraped and cleaned, making the de-icing more efficient and effective.

[0023] (2) This wind turbine blade deicing device and deicing method, by setting up a detection mechanism, etc., when the U-shaped plate moves to the top of the side wall of the blade body, hot water is sprayed on the surface of the blade body through the nozzle. At the same time, under the action of water pressure, the first push rod is pushed to move in the direction close to the blade body and abut against its surface. At the same time, the second spring is compressed, and when the first push rod moves, the push pin is driven to slide in the first slide groove through the second connecting block, thereby pushing the L-shaped plate to rotate clockwise along the rotating pin and abut against the pull rope, thereby pulling the moving rod and the moving disk to move. At the same time, the first spring is compressed. At this time, the distance sensor detects the distance of the moving disk. If the surface of the blade body is frozen, a After a period of time, the ice will melt. At this time, the first push rod will continue to move, so that the L-shaped plate will continue to push the pull rope, thereby continuing to pull the moving rod and the moving plate to move, so that the distance of the moving plate detected by the distance sensor becomes smaller. If the surface of the blade body is not frozen, after a period of time, the distance of the moving plate detected by the distance sensor will not change. Therefore, before the surface of the blade body is completely de-iced from top to bottom, the ice condition of the surface of the blade body can be detected. If it is frozen, the U-shaped plate is driven downward by the lifting mechanism to de-ice. If it is not frozen, the rotating cover is rotated and reset by the driving mechanism, and the U-shaped plate is moved downward and reset by the lifting mechanism, thereby avoiding waste of hot water and being more energy-saving and environmentally friendly.

[0024] (3) This wind turbine blade deicing device and deicing method, through a moving mechanism, etc., when the U-shaped plate moves upward, it drives the protective cover to move upward, and drives the push block to move upward synchronously and gradually separate from the inclined surface. At this time, the two protective covers can be moved away from each other and opened under the action of the fifth spring, thereby exposing the internal U-shaped plate, etc., to ensure subsequent normal deicing operations. When the U-shaped plate moves downward, it drives the protective cover and the push block to move downward. When the push block abuts against the inclined surface, it pushes the two protective covers to move closer to each other. At the same time, the fifth spring is compressed, thereby closing the two protective covers, sealing and protecting the internal U-shaped plate, etc., to ensure its use effect and life. In addition, when the protective cover moves, it can scrape and clean the surface of the solar heating tube to ensure its efficiency and effect in absorbing solar energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial cross-sectional structural schematic diagram of the protective cover in the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the protective cover in the present invention;

[0028] Figure 4Schematic diagram of the position of the detection mechanism in the present invention;

[0029] Figure 5 is Figure 2 the enlarged structural schematic diagram of part A in

[0030] Figure 6 is Figure 3 the enlarged structural schematic diagram of part B in

[0031] Figure 7 is Figure 3 the enlarged structural schematic diagram of part C in

[0032] Figure 8 is Figure 4 the enlarged structural schematic diagram of part D in

[0033] Figure 9 is Figure 4 the enlarged structural schematic diagram of part E in

[0034] Figure 10 is Figure 7 the enlarged structural schematic diagram of part F in

[0035] Figure 11 is Figure 9 the enlarged structural schematic diagram of part G in

[0036] In the figure: 1. Wind turbine body; 101. Tower; 102. Hub; 103. Blade body; 2. Detection mechanism; 201. L-shaped bracket; 202. Fixed block; 203. Pull rope; 204. Stop disk; 205. Moving disk; 206. First spring; 207. Distance sensor; 208. Moving rod; 3. Pushing mechanism; 301. Pushing pin; 302. First pushing rod; 303. Fixed ring; 304. Second spring; 305. First connecting block; 306. Rotating pin; 307. L-shaped plate; 308. Second connecting block; 309. First chute; 4. Telescopic mechanism; 401. First sleeve; 402. First rod; 403. Return spring; 5. Driving mechanism; 501. Gear; 502. Rack; 503. Connecting frame; 504. L-shaped block; 505. Moving block; 506. Second pushing rod; 507. Moving assembly; 6. Moving mechanism; 601. Third T-shaped guide rod; 602. Fixed plate; 603. Fifth spring; 604. Mounting block; 605. V-shaped plate; 606. Inclined surface; 607. Pushing block; 7. Reset mechanism; 701. First connecting plate; 702. Second T-shaped guide rod; 703. Second connecting plate; 704. Fourth spring; 8. Limiting mechanism; 801. Hemispherical hole; 802. Support block; 803. First T-shaped guide rod; 804. Sliding block; 805. Plug pin; 806. Third spring; 9. Lifting mechanism; 901. Second chute; 902. Mounting plate; 903. Threaded tube; 904. Threaded rod; 905. Motor; 906. Second sleeve; 907. Second rod; 10. U-shaped plate; 11. Heat preservation box; 12. Solar heating tube; 13. Water tank; 14. Connecting pipe; 15. Moving plate; 16. Protective cover; 17. Support plate; 18. Rotating shaft; 19. Rotating cover; 20. Hot water pipe; 21. Hose; 22. Sprayer; 23. Rubber block; 2301. Rounded corner. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] Please refer to Figures 1 - 11, the present invention provides a technical solution: an ice removal device for a wind turbine blade, including a tower 101 and a hub 102 on a wind turbine generator body 1, and a plurality of blade bodies 103 are arranged on the hub 102. The side wall of the tower 101 is connected to a U-shaped plate 10 through a lifting mechanism 9, and a heat preservation box 11 is fixedly connected to the side wall of the U-shaped plate 10. A plurality of solar heating tubes 12 are fixedly inserted into the side wall of the heat preservation box 11, and an electric heater and a temperature sensor are arranged in the heat preservation box 11. A water tank 13 is fixedly connected to the side wall of the U-shaped plate 10, and a connecting pipe 14 is fixedly connected between the water tank 13 and the heat preservation box 11. A first one-way valve is arranged in the connecting pipe 14, and the conduction direction of the first one-way valve is from the water tank 13 to the heat preservation box 11. Two symmetrically arranged support plates 17 are fixedly connected to the top of the heat preservation box 11. The side wall of each support plate 17 is rotatably connected to a hollow rotating cover 19 through a rotating shaft 18, and a plurality of arrayed spray heads 22 are fixedly connected to the bottom of the rotating cover 19. The bottom of each rotating cover 19 is connected to a plurality of arrayed rubber blocks 23 through a telescopic mechanism 4, and a rounded corner 2301 is arranged at the bottom of the rubber block 23. A hot water pipe 20 is fixedly connected to the top of the heat preservation box 11, and a second one-way valve is arranged in the hot water pipe 20. The conduction direction of the second one-way valve is from the heat preservation box 11 to the rotating cover 19. The upper end of the hot water pipe 20 is fixedly connected to two flexible hoses 21, and the other ends of the flexible hoses 21 are fixedly inserted into the top of the rotating cover 19. A moving plate 15 is inserted into the side wall of the heat preservation box 11 through a reset mechanism 7, and two symmetrically arranged protective covers 16 are connected to the side wall of the U-shaped plate 10 through a moving mechanism 6. The solar heating tubes 12 are inserted into the side wall of the protective cover 16. The rotation of the rotating shaft 18 is driven by a driving mechanism 5, and a detection mechanism 2 for detecting the icing condition on the surface of the blade body 103 is arranged at the bottom of each rotating cover 19, which is convenient for automatically detecting the icing condition on the surface of the blade body 103. If icing occurs, the hot water heated by the solar energy can be sprayed on the surface of the blade body 103 through the spray heads 22 to melt the ice. At the same time, the ice can be removed by spraying water comprehensively from top to bottom. And after the melting is completed, the melted ice can be scraped and cleaned by using the rubber blocks 23, so that the ice removal efficiency is higher and the effect is better.

[0039] Please refer to Figure 8 and Figure 9, the detection mechanism 2 includes a plurality of L-shaped brackets 201 arranged in an array and fixedly connected to the bottom of the rotating cover 19. Two symmetrically arranged fixing blocks 202 are fixedly connected to the side walls of each L-shaped bracket 201. A moving rod 208 is inserted into the side wall of the fixing block 202. One end of the moving rod 208 is fixedly connected to a pulling rope 203. The other end of the pulling rope 203 penetrates through the side wall of the fixing block 202 and is fixedly connected to a retaining disc 204. The other end of the pulling rope 203 and the moving rod 208 are fixedly connected to a moving disc 205. A first spring 206 is sleeved on the side wall of the moving rod 208. A distance sensor 207 is fixedly connected to the top of one of the fixing blocks 202. The movement of the moving rod 208 is pushed by a pushing mechanism 3. When the U-shaped plate 10 moves to the top of the side wall of the blade body 103, hot water is sprayed on the surface of the blade body 103 through the nozzle 22. At the same time, the pushing mechanism 3 is used to push the moving rod 208 and the moving disc 205 to move. At the same time, the first spring 206 is compressed. At this time, the distance of the moving disc 205 is detected by the distance sensor 207. If the surface of the blade body 103 is frozen, after a period of time, the ice will melt. At this time, the moving rod 208 and the moving disc 205 will continue to move, so that the distance of the moving disc 205 detected by the distance sensor 207 becomes smaller.

[0040] Please refer to Figure 9 and Figure 11, the driving mechanism 3 includes a plurality of first driving rods 302 arranged in an array and fixedly inserted at the bottom of the rotating cover 19. The lower end of the first driving rod 302 penetrates through the bottom of the L-shaped bracket 201. A fixing ring 303 is fixedly sleeved on the side wall of the first driving rod 302, and a second spring 304 is sleeved on the side wall of the first driving rod 302. The bottom of the L-shaped bracket 201 is fixedly connected with a first connecting block 305, and the side wall of the first connecting block 305 is rotatably connected with an L-shaped plate 307 through a rotating pin 306. The side wall of the first driving rod 302 is fixedly connected with a second connecting block 308, and the side wall of the second connecting block 308 is fixedly connected with a driving pin 301. A first chute 309 is formed on the side wall of the L-shaped plate 307, and the driving pin 301 is inserted into the first chute 309. Under the action of water pressure, the first driving rod 302 is pushed to move towards the blade body 103 and abuts against its surface. At the same time, the second spring 304 is compressed. And when the first driving rod 302 moves, the driving pin 301 is driven by the second connecting block 308 to slide in the first chute 309, so as to push the L-shaped plate 307 to rotate clockwise along the rotating pin 306 and abut against the pulling rope 203, thereby pulling the moving rod 208 and the moving disc 205 to move. If the surface of the blade body 103 freezes, after a period of time, the ice will melt. At this time, the first driving rod 302 will continue to move, so that the L-shaped plate 307 will continue to push the pulling rope 203, thereby continuing to pull the moving rod 208 and the moving disc 205 to move, making the distance detected by the distance sensor 207 from the moving disc 205 smaller. If the surface of the blade body 103 does not freeze, after a period of time, the distance detected by the distance sensor 207 from the moving disc 205 will not change.

[0041] Please refer to Figure 6 , the telescopic mechanism 4 includes two symmetrically arranged first sleeve rods 402 fixedly connected to the top of each rubber block 23. A first sleeve 401 is sleeved on the side wall of the first sleeve rod 402. The upper end of the first sleeve 401 is fixed to the bottom of the rotating cover 19, and a reset spring 403 is sleeved on the side wall of each first sleeve 401 to ensure that the rubber block 23 can abut against the surface of the blade body 103 and ensure the efficiency and effect of scraping and cleaning.

[0042] Please refer to Figure 7 and Figure 10, the driving mechanism 5 includes gears 501 fixedly sleeved on the side walls of the respective rotating shafts 18, and a moving assembly 507 is provided on the side wall of the U-shaped plate 10. The moving assembly 507 is a well-known technology in the technical field of the present invention and will not be elaborated here. It can be driven by a motor or a cylinder. A moving block 505 is connected to the moving assembly 507, and an L-shaped connecting frame 503 is fixedly connected to the top of the moving block 505. An L-shaped block 504 is fixedly connected to the top of the connecting frame 503, and a rack 502 is fixedly connected to the top of the L-shaped block 504. A second push rod 506 is fixedly connected to the side wall of the moving block 505, and a limiting mechanism 8 for limiting the rotating shaft 18 is provided on the side wall of the support plate 17. Start the moving assembly 507 to drive the moving block 505 to move towards the U-shaped plate 10, and drive the rack 502 to move through the connecting frame 503 and the L-shaped block 504. When the rack 502 meshes with the gear 501, the rotating shaft 18 is pushed to rotate, so that the two rotating covers 19 rotate towards each other, and the nozzle 22 faces the surface of the blade body 103. When the moving block 505 continues to move, the second push rod 506 abuts against the side wall of the moving plate 15, thereby pushing the moving plate 15 into the heat preservation box 11. At the same time, the fourth spring 704 is compressed, and the hot water in the heat preservation box 11 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the hot water in the heat preservation box 11 is squeezed and enters the rotating cover 19 through the hot water pipe 20 and the hose 21 and is sprayed on the surface of the blade body 103 through the nozzle 22 to melt the ice.

[0043] Please refer to Figure 10 , the limiting mechanism 8 includes a plurality of hemispherical holes 801 arranged in an array on the side walls of the respective rotating shafts 18, and a support block 802 is fixedly connected to the side wall of each support plate 17. Two symmetrically arranged first T-shaped guide rods 803 penetrate through the support block 802, and a sliding block 804 is fixedly connected to the upper end of the first T-shaped guide rod 803. A plug 805 is fixedly connected to the top of the sliding block 804, and a third spring 806 is sleeved on the side wall of each first T-shaped guide rod 803. When the rotating shaft 18 rotates, the plug 805 slides out of the hemispherical hole 801 and slides on the side wall of the rotating shaft 18. At the same time, the third spring 806 is compressed. When the rotating shaft 18 stops rotating, the plug 805 can be inserted into the hemispherical hole 801 again under the action of the third spring 806 for limiting, which is more stable and reliable.

[0044] Please refer to Figure 7, the reset mechanism 7 includes a first connecting plate 701 fixedly connected to the top of the moving plate 15, and two symmetrically arranged second T-shaped guide rods 702 are fixedly connected to the side wall of the first connecting plate 701. A second connecting plate 703 is sleeved on the side wall of the second T-shaped guide rod 702. The second connecting plate 703 is fixed to the top of the heat preservation box 11. And a fourth spring 704 is sleeved on the side wall of each second T-shaped guide rod 702, which plays a role in guiding and resetting the movement of the moving plate 15.

[0045] Please refer to Figure 1 and Figure 5 , the moving mechanism 6 includes two symmetrically arranged third T-shaped guide rods 601 inserted into the side walls of each protective cover 16. And two symmetrically arranged fixing plates 602 are fixedly connected to the side wall of the U-shaped plate 10. One end of the third T-shaped guide rod 601 is fixedly connected to the side wall of the fixing plate 602. And a fifth spring 603 is sleeved on the side wall of each third T-shaped guide rod 601. An installation block 604 is fixedly connected to the side wall of the tower 101. And a V-shaped plate 605 is fixedly connected to the side wall of the installation block 604. The V-shaped plate 605 includes an inclined surface 606. And a pushing block 607 is fixedly connected to the bottom of each protective cover 16. When the U-shaped plate 10 moves upward, it drives the protective cover 16 to move upward, and drives the pushing block 607 to move upward synchronously and gradually separate from the inclined surface 606. At this time, the two protective covers 16 can move away from each other under the action of the fifth spring 603 to open, so as to expose the internal U-shaped plate 10, etc., to ensure the subsequent normal de-icing operation. When the U-shaped plate 10 moves downward, it drives the protective cover 16 and the pushing block 607 to move downward. When the pushing block 607 abuts against the inclined surface 606, it drives the two protective covers 16 to move closer to each other. At the same time, the fifth spring 603 is compressed, so as to close the two protective covers 16 and provide sealed protection for the internal U-shaped plate 10, etc., to ensure its use effect and service life. And when the protective cover 16 moves, it can scrape and clean the surface of the solar heating tube 12 to ensure its solar absorption efficiency and effect.

[0046] Please refer to Figure 1 and Figure 5, the lifting mechanism 9 includes two symmetrically arranged second chutes 901 opened at the bottom of the protective cover 16. A threaded pipe 903 and a second sleeve 906 are inserted into the second chute 901. The upper ends of the threaded pipe 903 and the second sleeve 906 are fixed to the bottom of the U-shaped plate 10. A rubber cover is fixedly connected between the threaded pipe 903, the second sleeve 906 and the second chute 901. A mounting plate 902 is fixedly connected to the side wall of the tower 101. The top of the mounting plate 902 is rotatably connected with a threaded rod 904, and the threaded rod 904 is threadedly connected with the threaded pipe 903. A second sleeve rod 907 is fixedly connected to the top of the mounting plate 902, and the second sleeve rod 907 is inserted into the second sleeve 906. A motor 905 is fixedly connected to the bottom of the mounting plate 902, and the output end of the motor 905 is fixed to the lower end of the threaded rod 904. Starting the motor 905, the rotation of the motor 905 drives the rotation of the threaded rod 904, thereby driving the threaded pipe 903 and the second sleeve 906 to lift, and further driving the U-shaped plate 10 to lift.

[0047] A method for deicing a wind turbine blade, using the above-mentioned wind turbine blade deicing device, includes the following steps:

[0048] S1: Through the setting of the solar heating tube 12, the solar energy can be absorbed and utilized to heat the water in the heat preservation box 11, which is more energy-saving and environmentally friendly. And when the temperature is not enough, the internal electric heater can be used for auxiliary heating. When deicing the blade body 103, the lifting mechanism 9 drives the U-shaped plate 10 to move upward. At the same time, it drives the protective cover 16 to move upward, and drives the pushing block 607 to move upward synchronously and gradually separate from the inclined surface 606. At this time, the two protective covers 16 can move away from each other and open under the action of the fifth spring 603, so as to expose the internal U-shaped plate 10, etc., to ensure the subsequent normal deicing operation. When the U-shaped plate 10 moves to the top of the side wall of the blade body 103, start the moving component 507, drive the moving block 505 to move towards the U-shaped plate 10, and drive the rack 502 to move through the connecting frame 503 and the L-shaped block 504;

[0049] S2: When the rack 502 meshes with the gear 501, it drives the rotating shaft 18 to rotate, so that the two rotating covers 19 rotate towards each other, and the nozzles 22 face the surface of the blade body 103. When the moving block 505 continues to move, the second push rod 506 abuts against the side wall of the moving plate 15, thereby pushing the moving plate 15 to move into the heat preservation box 11. At the same time, the fourth spring 704 is compressed, and the hot water in the heat preservation box 11 can be squeezed. At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the hot water in the heat preservation box 11 is squeezed and enters the rotating cover 19 through the hot water pipe 20 and the hose 21 and is sprayed on the surface of the blade body 103 by the nozzles 22 to melt the ice;

[0050] S3: At the same time, under the action of water pressure, the first push rod 302 is pushed to move in the direction close to the blade body 103 and abut against the surface thereof, and at the same time, the second spring 304 is compressed, and when the first push rod 302 moves, the push pin 301 is driven to slide in the first slide groove 309 through the second connecting block 308, thereby pushing the L-shaped plate 307 to rotate clockwise along the rotating pin 306 and abut against the pull rope 203, thereby pulling the moving rod 208 and the moving disk 205 to move, and at the same time, the first spring 206 is compressed, and at this time, the distance sensor 207 detects the distance of the moving disk 205;

[0051] S4: If the surface of the blade body 103 is frozen, the ice will melt after a period of time. At this time, the first push rod 302 will continue to move, so that the L-shaped plate 307 continues to push the pull rope 203, thereby continuing to pull the moving rod 208 and the moving plate 205 to move, so that the distance of the moving plate 205 detected by the distance sensor 207 becomes smaller. If the surface of the blade body 103 is not frozen, after a period of time, the distance of the moving plate 205 detected by the distance sensor 207 will not change, so that the ice condition of the surface of the blade body 103 can be detected before the surface of the blade body 103 is fully de-iced from top to bottom;

[0052] S5: If ice forms, the U-shaped plate 10 is driven to gradually move downward by the lifting mechanism 9, so that the nozzle 22 can perform de-icing operation on the surface of the blade body 103, and under the action of the reset spring 403, the rubber block 23 can be abutted against the surface of the blade body 103. When the U-shaped plate 10 moves downward, the rubber block 23 can be driven to move downward synchronously, so that the melted ice can be scraped and cleaned, so that the de-icing efficiency is higher and the effect is better. If ice does not form, the rotating cover 19 is rotated and reset by the driving mechanism 5, and the U-shaped plate 10 is moved downward and reset by the lifting mechanism 9, so as to avoid the waste of hot water and be more energy-saving and environmentally friendly.

[0053] S6: After the rotating cover 19 rotates and resets, the second push rod 506 disengages from the moving plate 15. At this time, the moving plate 15 can move and reset under the action of the fourth spring 704, causing a negative pressure to be generated inside the incubator 11. Meanwhile, the first one-way valve opens and the second one-way valve closes. At this time, the water in the water tank 13 can enter the incubator 11 through the connecting pipe 14. When the U-shaped plate 10 moves downward, it drives the protective cover 16 and the pushing block 607 downward. When the pushing block 607 abuts against the inclined surface 606, it pushes the two protective covers 16 to move closer to each other. Meanwhile, the fifth spring 603 is compressed, thereby closing the two protective covers 16 to provide sealing protection for the internal U-shaped plate 10, etc., ensuring its service effect and lifespan. Moreover, when the protective cover 16 moves, it can scrape and clean the surface of the solar heating tube 12, ensuring its solar absorption efficiency and effect.

Claims

1. A wind turbine blade deicing device, comprising a tower (101) and a hub (102) arranged on a wind turbine body (1), wherein a plurality of blade bodies (103) are arranged on the hub (102), characterized in that: The side wall of the tower (101) is connected to a U-shaped plate (10) via a lifting mechanism (9), and the side wall of the U-shaped plate (10) is fixedly connected to a heat preservation box (11); A plurality of solar heating tubes (12) are fixedly inserted into the side wall of the heat preservation box (11), and an electric heater and a temperature sensor are arranged in the heat preservation box (11); a water tank (13) is fixedly connected to the side wall of the U-shaped plate (10), and a connecting pipe (14) is fixedly connected between the water tank (13) and the heat preservation box (11), and a first non-return valve is arranged in the connecting pipe (14); and two symmetrically arranged support plates (17) are fixedly connected to the top of the heat preservation box (11); the side wall of each support plate (17) is rotatably connected to a hollow rotating cover (19) via a rotating shaft (18), and the bottom of the rotating cover (19) is fixedly connected to a plurality of nozzles (22) arranged in an array; the bottom of each rotating cover (19) is connected to a plurality of rubber blocks (23) arranged in an array via a telescopic mechanism (4), and the bottom of the rubber block (23) is provided with a rounded corner (2301); The top of the heat preservation box (11) is fixedly connected to a hot water pipe (20), and a second one-way valve is arranged in the hot water pipe (20); the upper end of the hot water pipe (20) is fixedly connected to two hoses (21), and the other end of the hose (21) is fixedly inserted into the top of the rotating cover (19); the side wall of the heat preservation box (11) is inserted with a movable plate (15) through a reset mechanism (7), and the side wall of the U-shaped plate (10) is connected to two symmetrically arranged protective covers (16) through a movable mechanism (6); the solar heating tube (12) is inserted into the side wall of the protective cover (16); the rotation of the rotating shaft (18) is driven by a driving mechanism (5), and a detection mechanism (2) for detecting the icing condition of the surface of the blade body (103) is arranged at the bottom of each rotating cover (19); The detection mechanism (2) comprises a plurality of L-shaped brackets (201) arranged in an array and fixedly connected to the bottom of the rotating cover (19), and the side wall of each L-shaped bracket (201) is fixedly connected to two symmetrically arranged fixed blocks (202), a moving rod (208) is inserted into the side wall of the fixed block (202), and one end of the moving rod (208) is fixedly connected to a pull rope (203), the other end of the pull rope (203) passes through the side wall of the fixed block (202) and is fixedly connected to a baffle (204), and the other end of the moving rod (208) of the pull rope (203) is fixedly connected to a moving disk (205), and the side wall of the moving rod (208) is sleeved with a first spring (206), the top of one of the fixed blocks (202) is fixedly connected to a distance sensor (207), and the movement of the moving rod (208) is driven by a driving mechanism (3).

2. A wind turbine blade deicing device according to claim 1, characterized in that: The pushing mechanism (3) comprises a plurality of first pushing rods (302) arranged in an array and fixedly inserted at the bottom of the rotating cover (19), and the lower ends of the first pushing rods (302) are arranged to penetrate the bottom of the L-shaped bracket (201); a fixing ring (303) is fixedly sleeved on the side wall of the first pushing rod (302), and a second spring (304) is sleeved on the side wall of the first pushing rod (302); a first connecting block (305) is fixedly connected to the bottom of the L-shaped bracket (201), and a side wall of the first connecting block (305) is rotatably connected to an L-shaped plate (307) via a rotating pin (306); a side wall of the first pushing rod (302) is fixedly connected to a second connecting block (308), and a side wall of the second connecting block (308) is fixedly connected to a pushing pin (301); a first sliding groove (309) is provided on the side wall of the L-shaped plate (307), and the pushing pin (301) is inserted into the first sliding groove (309).

3. A wind turbine blade deicing device according to claim 2, characterized in that: The telescopic mechanism (4) comprises two symmetrically arranged first rods (402) fixedly connected to the top of each rubber block (23), and the side walls of the first rods (402) are sleeved with first sleeves (401), the upper ends of the first sleeves (401) are fixed to the bottom of the rotating cover (19), and the side walls of each first sleeve (401) are sleeved with return springs (403).

4. A wind turbine blade deicing device according to claim 3, characterized in that: The driving mechanism (5) comprises a gear (501) fixedly sleeved on the side wall of each rotating shaft (18), and a moving assembly (507) is arranged on the side wall of the U-shaped plate (10), a moving block (505) is connected to the moving assembly (507), and the top of the moving block (505) is fixedly connected to an L-shaped connecting frame (503), the top of the connecting frame (503) is fixedly connected to an L-shaped block (504), and the top of the L-shaped block (504) is fixedly connected to a rack (502), the side wall of the moving block (505) is fixedly connected to a second pushing rod (506), and the side wall of the support plate (17) is provided with a limiting mechanism (8) for limiting the rotating shaft (18).

5. A wind turbine blade deicing device according to claim 4, characterized in that: The limiting mechanism (8) comprises a plurality of hemispherical holes (801) arranged in an array and opened on the side wall of each rotating shaft (18), and the side wall of each supporting plate (17) is fixedly connected to a supporting block (802), two symmetrically arranged first T-shaped guide rods (803) are penetrated through the supporting block (802), and a sliding block (804) is fixedly connected to the upper end of the first T-shaped guide rod (803), and a latch (805) is fixedly connected to the top of the sliding block (804), and a third spring (806) is sleeved on the side wall of each first T-shaped guide rod (803).

6. A wind turbine blade deicing device according to claim 5, characterized in that: The reset mechanism (7) comprises a first connecting plate (701) fixedly connected to the top of the moving plate (15), and the side wall of the first connecting plate (701) is fixedly connected to two symmetrically arranged second T-shaped guide rods (702), the side wall of the second T-shaped guide rod (702) is sleeved with a second connecting plate (703), the second connecting plate (703) is fixed to the top of the heat preservation box (11), and the side wall of each second T-shaped guide rod (702) is sleeved with a fourth spring (704).

7. A wind turbine blade deicing device according to claim 6, characterized in that: The moving mechanism (6) comprises two symmetrically arranged third T-shaped guide rods (601) inserted into the side walls of each protective cover (16), and the side wall of the U-shaped plate (10) is fixedly connected to two symmetrically arranged fixing plates (602), one end of the third T-shaped guide rod (601) is fixed to the side wall of the fixing plate (602), and the side wall of each third T-shaped guide rod (601) is sleeved with a fifth spring (603), the side wall of the tower (101) is fixedly connected to a mounting block (604), and the side wall of the mounting block (604) is fixedly connected to a V-shaped plate (605), the V-shaped plate (605) comprises an inclined surface (606), and the bottom of each protective cover (16) is fixedly connected to a pushing block (607).

8. A wind turbine blade deicing device according to claim 7, characterized in that: The lifting mechanism (9) comprises two symmetrically arranged second slide grooves (901) opened at the bottom of the protective cover (16), and a threaded tube (903) and a second sleeve (906) are inserted into the second slide groove (901), the upper ends of the threaded tube (903) and the second sleeve (906) are fixed to the bottom of the U-shaped plate (10), and the side wall of the tower (101) is fixedly connected to a mounting plate (902), the top of the mounting plate (902) is rotatably connected to a threaded rod (904), and the threaded rod (904) is threadedly connected to the threaded tube (903), the top of the mounting plate (902) is fixedly connected to a second set of rods (907), and the second set of rods (907) are inserted into the second sleeve (906), the bottom of the mounting plate (902) is fixedly connected to a motor (905), and the output end of the motor (905) is fixed to the lower end of the threaded rod (904).

9. A method for deicing a wind turbine blade, using a wind turbine blade deicing device as claimed in claim 8, characterized in that: The following steps are involved: S1: By setting up the solar heating tube (12), solar energy can be absorbed and utilized, thereby heating the water in the heat preservation box (11), which is more energy-saving and environmentally friendly. In addition, when the temperature is not high enough, auxiliary heating can be performed by the internal electric heater. When the blade body (103) needs to be de-iced, the U-shaped plate (10) is driven upward by the lifting mechanism (9), and at the same time, the protective cover (16) is driven upward, and the push block (607) is driven to move upward synchronously and move with the inclined surface (606). Gradually separate, at this time, the two protective covers (16) can move away from each other and open under the action of the fifth spring (603), thereby exposing the internal U-shaped plate (10) and the like, ensuring subsequent normal deicing operations, and when the U-shaped plate (10) moves to the top of the side wall of the blade body (103), the moving assembly (507) is started to drive the moving block (505) to move in a direction close to the U-shaped plate (10), and drive the rack (502) to move through the connecting frame (503) and the L-shaped block (504); S2: When the rack (502) meshes with the gear (501), the rotating shaft (18) is driven to rotate, so that the two rotating covers (19) rotate closer to each other and the spray head (22) faces the surface of the blade body (103). When the moving block (505) continues to move, the second push rod (506) abuts against the side wall of the moving plate (15), so that the moving plate (15) is driven to move into the heat preservation box (11). At the same time, the fourth spring (704) is compressed and can squeeze the hot water in the heat preservation box (11). At the same time, the first one-way valve is closed and the second one-way valve is opened. At this time, the hot water in the heat preservation box (11) is squeezed and enters the rotating cover (19) through the hot water pipe (20) and the hose (21) and is sprayed onto the surface of the blade body (103) through the spray head (22) to melt the ice. S3: At the same time, under the action of water pressure, the first push rod (302) is pushed to move in a direction close to the blade body (103) and abut against the surface thereof, and at the same time, the second spring (304) is compressed, and when the first push rod (302) moves, the second connecting block (308) drives the push pin (301) to slide in the first slide groove (309), thereby pushing the L-shaped plate (307) to rotate clockwise along the rotating pin (306) and abut against the pull rope (203), thereby pulling the moving rod (208) and the moving disk (205) to move, and at the same time, the first spring (206) is compressed, and at this time, the distance of the moving disk (205) is detected by the distance sensor (207); S4: If the surface of the blade body (103) is frozen, the ice will melt after a period of time. At this time, the first push rod (302) will continue to move, so that the L-shaped plate (307) continues to push the pull rope (203), thereby continuing to pull the moving rod (208) and the moving plate (205) to move, so that the distance of the moving plate (205) detected by the distance sensor (207) becomes smaller. If the surface of the blade body (103) is not frozen, after a period of time, the distance of the moving plate (205) detected by the distance sensor (207) will not change, so that the ice condition of the surface of the blade body (103) can be detected before the surface of the blade body (103) is completely de-iced from top to bottom; S5: If ice is formed, the U-shaped plate (10) is driven to gradually move downward by the lifting mechanism (9), so that the nozzle (22) can perform a de-icing operation on the surface of the blade body (103), and under the action of the reset spring (403), the rubber block (23) can be pressed against the surface of the blade body (103). When the U-shaped plate (10) moves downward, the rubber block (23) can be driven to move downward synchronously, so that the melted ice can be scraped and cleaned, so that the de-icing efficiency is higher and the effect is better. If ice is not formed, the rotating cover (19) is rotated and reset by the driving mechanism (5), and the U-shaped plate (10) is moved downward and reset by the lifting mechanism (9), so as to avoid the waste of hot water and achieve more energy-saving and environmental protection. S6: When the U-shaped plate (10) moves downward, the protective cover (16) and the push block (607) are driven to move downward. When the push block (607) contacts the inclined surface (606), the two protective covers (16) are pushed to move closer to each other. At the same time, the fifth spring (603) is compressed, thereby closing the two protective covers (16) and sealing the U-shaped plate (10) and other parts inside to ensure their use effect and life. In addition, when the protective cover (16) moves, it can scrape and clean the surface of the solar heating tube (12) to ensure its efficiency and effect in absorbing solar energy.

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