Anti-corrosion structure for wind turbine generator

Abstract

The application discloses an anti-corrosion structure for a wind turbine, and relates to the technical field of wind turbine maintenance. The anti-corrosion structure for the wind turbine comprises a hanging rope and two groups of cleaning assemblies located at two ends of the hanging rope. The hanging rope is hung on the wind turbine. When the first group of cleaning assemblies is located at the top end of one side of a wind tower drum, the second group of cleaning assemblies is located at the bottom end of the other side of the wind tower drum. Each group of cleaning assemblies comprises a travelling vehicle, an adsorption mechanism, a high-pressure air generator, an air outlet arc tube and a water outlet arc tube. The travelling vehicle is provided with a power supply. The high-pressure air generator and the adsorption mechanism are electrically connected to the power supply. The air outlet arc tube and the water outlet arc tube are installed below the travelling vehicle. The high-pressure air generator is communicated with the air outlet arc tube. The anti-corrosion structure can wash and jet dry water stains on the outer wall of the tower drum, clean dust attached to the outer wall of the tower drum, and significantly reduce the corrosion process of the tower drum, thereby playing an anti-corrosion role. The two groups of cleaning assemblies are counterweights, and the energy consumption for driving the cleaning assemblies to climb up and down the wall is reduced.

Description

Technical Field

[0001] This application belongs to the field of wind turbine maintenance technology, specifically relating to an anti-corrosion structure for wind turbines. Background Technology

[0002] Wind power, as an important component of renewable energy, is being used more and more widely. However, wind turbines, exposed to the natural environment for extended periods, are highly susceptible to corrosion, leading to shortened equipment lifespan and increased maintenance costs. Currently, painting the surface of wind turbines is commonly used to prevent corrosion, a measure that significantly improves their corrosion resistance. Onshore wind turbines, consisting of the tower and blades, generally have a design life of 20-30 years. With increasing usage time, the tower is particularly prone to corrosion. This is mainly because onshore wind turbines are typically located in areas with strong winds and abundant wind energy. These areas generate significant amounts of dust, which carries corrosive substances such as salt and adheres to the outer wall of the tower. Rainwater also carries salt, dust, and other corrosive substances into the adhered dust, causing a galvanic reaction between the dust and the tower. Over time, this leads to increased corrosion of the tower's exterior, resulting in noticeable damage. Because the fan blades are constantly rotating, they accumulate less dust, so they are corroded far less than stationary wind turbine towers.

[0003] Some cleaning devices for wind turbine towers consist of only one climbing robot, which is suspended from the wind turbine by a rope and climbs on one side. Moving a single robot up and down on the wind turbine tower consumes a lot of energy. Summary of the Invention

[0004] Given that some cleaning devices for wind turbine towers consist of only one climbing robot, which is suspended from the wind turbine by a rope and climbs on one side, moving a single robot up and down on the wind turbine tower, resulting in high energy consumption, this application adopts the following technical solution.

[0005] A corrosion-resistant structure for wind turbines includes a suspension rope and two sets of cleaning components installed at both ends of the suspension rope. The suspension rope is used to hang the wind turbine, with the first set of cleaning components located at the top of one side of the wind turbine tower and the second set of cleaning components located at the bottom of the other side of the wind turbine tower.

[0006] Each cleaning assembly includes a mobile vehicle, an adsorption mechanism, a high-pressure air generator, an air outlet arc pipe, and a water outlet arc pipe.

[0007] The suspension rope connects to the traveling vehicle. The traveling vehicle is equipped with a power source. The high-pressure air generator and the adsorption mechanism are both fixed to the traveling vehicle and electrically connected to the power source. The air outlet arc pipe and the water outlet arc pipe are installed below the traveling vehicle, with the air outlet arc pipe being closer to the traveling vehicle than the water outlet arc pipe.

[0008] The high-pressure air generator is connected to the air outlet arc pipe. The inner ring surface of the air outlet arc pipe has multiple air outlets, all facing the center of the air outlet arc pipe. The inner ring surface of the water outlet arc pipe has multiple water outlets, all facing the center of the water outlet arc pipe. The water outlet arc pipe also has a water inlet.

[0009] The radius of the arc formed by the multiple air outlets is greater than the maximum radius of the wind turbine tower. The radius of the arc formed by the multiple water outlets is also greater than the maximum radius of the wind turbine tower. When the adsorption mechanism adheres to the wind turbine tower, causing all wheels of the traveling vehicle to be in contact with the wind turbine tower, one state of the multiple air outlets and the multiple water outlets is that they are all horizontally facing the wind turbine tower.

[0010] By adopting the above technical solution, a ground-based high-pressure water truck can be set up, with water pipes connected to the inlet of the water outlet arc pipe. The cleaning assembly is hoisted to the initial position at the top of the wind turbine tower. The adsorption mechanism is activated, ensuring all wheels of the traveling vehicle are against the outer wall of the wind turbine tower. The air outlet arc pipe and water outlet arc pipe are partially encircled around the outer circumference of the wind turbine tower without contact. The high-pressure air generator is activated, and high-pressure air is ejected from multiple outlets of the air outlet arc pipe. The ground-based high-pressure water truck is activated to supply water to the water outlet arc pipe, which sprays high-pressure clean water to wash away dust and other adhering substances from the outer wall of the wind turbine tower. Then, the traveling vehicle moves downwards, and the air outlet arc pipe sprays high-pressure air to dry the water stains. During the downward movement of the traveling vehicle, this structure continuously performs high-pressure water washing and high-pressure air jetting on the outer wall of the tower, cleaning away the dust adhering to the outer wall. Using this structure for cleaning and maintenance of wind turbine towers can significantly reduce the corrosion process, thus providing corrosion protection. The two sets of cleaning components act as counterweights for each other. When one set of cleaning components moves up and down, the other set acts as a counterweight, requiring less driving force and consuming less energy. The cleaning component at the top can clean one side of the wind turbine tower from top to bottom. During this process, the other set of cleaning components moves from the bottom of the wind turbine tower to the top, and can also clean the other side of the wind turbine tower from top to bottom, resulting in high cleaning efficiency.

[0011] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that, with the plurality of air outlets horizontally facing the wind turbine tower, the circumferential length of the air ejected from the plurality of air outlets covering the wind turbine tower is greater than or equal to the circumference of the largest semicircle at the wind turbine tower. Similarly, with the plurality of water outlets horizontally facing the wind turbine tower, the circumferential length of the water ejected from the plurality of water outlets covering the wind turbine tower is greater than or equal to the circumference of the largest semicircle at the wind turbine tower.

[0012] By adopting the above technical solution, one set of cleaning components can clean at least half of the wind turbine tower at one time. The cleaning component at the top can clean one side of the semi-cylindrical surface of the wind turbine tower from top to bottom. During this process, another set of cleaning components moves from the bottom of the wind turbine tower to the top of the wind turbine tower. After reaching the top, it can also clean the other side of the semi-cylindrical surface of the wind turbine tower from top to bottom. That is, the entire wind turbine tower can be cleaned in one round trip, which is highly efficient.

[0013] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that each set of cleaning components includes a connecting rod, four side ropes, and two sets of winding mechanisms. The connecting rod is fixed to the traveling vehicle. The connecting rod has an upper through hole and a lower through hole. The middle section of the air outlet arc pipe rotatably passes through the upper through hole. The middle section of the water outlet arc pipe rotatably passes through the lower through hole. Both sets of winding mechanisms are mounted on the traveling vehicle. One set of winding mechanisms connects the two sides of the air outlet arc pipe via two side ropes. The other set of winding mechanisms connects the two sides of the water outlet arc pipe via two additional side ropes. Each set of winding mechanisms is electrically connected to the power source, enabling simultaneous shortening and extension of the two side ropes, causing either the air outlet arc pipe or the water outlet arc pipe to rotate vertically.

[0014] By adopting the above technical solution, since the traveling vehicle occupies a certain space at the top of the wind turbine tower, the medium sprayed horizontally from the air outlet arc pipe and water outlet arc pipe below the traveling vehicle is difficult to reach the area where the traveling vehicle is located at the top. This solution is equipped with air outlet arc pipe and water outlet arc pipe that can rotate vertically, which can wash and air dry the water stains at the top of the wind turbine tower, so that the cleaning range of this structure basically covers the entire tower.

[0015] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that each set of the cleaning components includes two connecting rods. The middle section of the air outlet arc pipe is straight and rotatably passes through the two upper through holes of the two connecting rods. The middle section of the air outlet arc pipe is parallel to the line connecting the two connection points of the two side ropes connecting the air outlet arc pipe. The middle section of the water outlet arc pipe is straight and rotatably passes through the two lower through holes of the two connecting rods. The middle section of the water outlet arc pipe is parallel to the line connecting the two connection points of the two side ropes connecting the water outlet arc pipe.

[0016] By adopting the above technical solution, the winding mechanism drives the side rope to shorten or lengthen, which allows the air outlet arc pipe or water outlet arc pipe to rotate, thereby changing the direction of air jet or water spray, and enabling the cleaning of the top and bottom ends of the wind turbine tower that are inconvenient to reach by the air outlet arc pipe and water outlet arc pipe.

[0017] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that, in each set of cleaning components, the radius of the air outlet arc pipe is larger than the radius of the water outlet arc pipe. When the adsorption mechanism adsorbs onto the wind turbine tower, causing all wheels of the traveling vehicle to be in contact with the wind turbine tower, the air outlet arc pipe is located outside the water outlet arc pipe in the vertical direction.

[0018] By adopting the above technical solution, the water outlet arc pipe can be rotated upward at a large angle without hitting the air outlet arc pipe. The large angle of movement allows it to spray to the top area of ​​the tower.

[0019] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that, in each set of cleaning components, one set of winding mechanisms is located above the other set of winding mechanisms. The two side ropes of the upper set of winding mechanisms are connected to both ends of the water outlet arc pipe. The middle section of the air outlet arc pipe has two curved sections on both sides. The two side ropes of the lower set of winding mechanisms are connected to the middle positions of the curved sections on both sides of the air outlet arc pipe.

[0020] By adopting the above technical solution, the two sets of side ropes will not collide during the rotation of the air outlet arc pipe and the water outlet arc pipe.

[0021] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that each cleaning assembly further includes several cylinders, all mounted on the traveling vehicle. Each cylinder is electrically connected to the power source and also connected to the high-pressure air generator. When all wheels of the traveling vehicle face the wind turbine tower, the telescopic shaft of each cylinder faces the wind turbine tower. Each cylinder can drive its telescopic shaft to abut against the wind turbine tower, causing the traveling vehicle to detach from the wind turbine tower.

[0022] By adopting the above technical solution, when cleaning the top of the wind turbine tower, the traveling vehicle is attached to the tower wall, which is inconvenient for cleaning. By setting up a cylinder, the cylinder can be activated to make its telescopic shaft abut against the wind turbine tower, and the traveling vehicle can be lifted away from the tower wall in the opposite direction, so that the top of the tower wall is completely exposed, which makes it easier to clean the top of the tower wall.

[0023] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that the adsorption mechanism includes an electromagnet. The electromagnet is mounted on the traveling vehicle. The electromagnet is electrically connected to the power source.

[0024] By adopting the above technical solution, the electromagnet can be attracted to the wind turbine tower when it is energized, so that the traveling vehicle can be attracted to the outer wall of the wind turbine tower and will not drift. When the power is cut off, the attraction can be released, making it easy to lift the traveling vehicle away from the tower wall in the opposite direction.

[0025] A preferred embodiment of the corrosion-resistant structure for this wind turbine is that the radius of the air outlet arc pipe of the second set of cleaning components is larger than the radii of the air outlet arc pipe and the water outlet arc pipe of the first set of cleaning components. The radius of the water outlet arc pipe of the second set of cleaning components is also larger than the radii of the air outlet arc pipe and the water outlet arc pipe of the first set of cleaning components. The weight difference between the two sets of cleaning components is within 10%.

[0026] By adopting the above technical solution, the air outlet and water outlet arc pipes of one set of cleaning components completely avoid the air outlet and water outlet arc pipes of the other set of cleaning components, ensuring that the two sets of cleaning components will not collide during their relative vertical movement. Although the radii of the two sets of cleaning components differ, the weight difference can be kept within 10% by adjusting the weight of other components. This reduces the driving force required for the relative vertical movement of the two sets of cleaning components, resulting in lower energy consumption. Preferably, the weights of the two sets of cleaning components are equal, which minimizes the driving force required by the vehicle.

[0027] In summary, the anti-corrosion structure for wind turbines in this application has the following beneficial effects: (1) High-efficiency anti-corrosion: By spraying high-pressure water around the tower to wash away dust and other dirt on the surface of the tower wall, and then spraying high-pressure air to remove water stains in the washed area, the tower is kept relatively dry, which effectively improves the corrosion resistance of the wind turbine and extends the service life of the equipment. (2) The two sets of cleaning components act as counterweights to each other, reducing the energy consumption of each set of cleaning components climbing the wall. (2) The rotatable air outlet arc pipe and water outlet arc pipe, in conjunction with the cylinder extension and retraction, lift the traveling vehicle away from the surface of the wind turbine tower, and each set of cleaning components can clean the top and bottom of the wind turbine tower and other areas that are difficult to clean automatically. Attached Figure Description

[0028] Figure 1 This is a diagram showing the combination of corrosion-resistant structures installed on a wind turbine.

[0029] Figure 2 This is a partial schematic diagram of the power generation nacelle and fan blades on top of the wind turbine.

[0030] Figure 3 yes Figure 1 A second-person perspective view.

[0031] Figure 4 yes Figure 3 Enlarged view of region A.

[0032] Figure 5 This is a structural diagram of a set of cleaning components.

[0033] Figure 6 yes Figure 1 A third-person perspective view.

[0034] Figure 7 yes Figure 6 Enlarged view of region B.

[0035] Reference numerals: 1. Suspension rope; 2. Wind turbine tower; 3. Generator compartment; 301. Rope groove; 302. Cover; 4. Traveling vehicle; 5. Adsorption mechanism; 6. High-pressure air generator; 7. Air outlet arc pipe; 8. Water outlet arc pipe; 9. Connecting rod; 10. Air nozzle; 11. Water spray nozzle; 12. Air pipe; 13. Water pipe; 14. Side rope; 15. Motor; 16. Roller; 701. Intermediate section; 702. Arc section; 17. Cylinder. Detailed Implementation

[0036] The technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the following embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0037] like Figure 1 A corrosion-resistant structure for a wind turbine includes a suspension rope 1 and two sets of cleaning components. The wind turbine includes a wind turbine tower 2, fan blades, and a nacelle 3. The nacelle 3 is fixed to the wind turbine tower 2, and the fan blades are rotatably connected to the nacelle 3.

[0038] like Figure 2 The top surface of the generator compartment 3 has a recessed rope groove 301, which is covered by a cover 302 that can be opened and locked. The hoisting rope 1 passes through the rope groove 301, and is covered and locked by the cover 302 to prevent the hoisting rope 1 from coming out of the rope groove 301. The two ends of the hoisting rope 1 hang downwards and are located on both sides of the wind turbine tower 2, respectively. A set of cleaning components is installed at each end of the hoisting rope 1. When the first set of cleaning components is located at the top of the wind turbine tower 2, the second set of cleaning components is located at the bottom of the wind turbine tower 2.

[0039] Each cleaning assembly starts cleaning the outer wall of the wind turbine tower 2 from the top. Two sets of cleaning assemblies clean the outer wall of the wind turbine tower 2 alternately. The purpose of having two sets of cleaning assemblies is to maintain the gravitational balance at both ends of the suspension rope 1, acting as a counterweight. This reduces the required driving force to move the cleaning assemblies up and down or to hold them in one position on the wind turbine tower 2. For example, the weight difference between the two sets of cleaning assemblies should be within 10%, preferably equal, thus minimizing the required driving force.

[0040] like Figure 3 and Figure 4 Each cleaning assembly includes a walking vehicle 4, an adsorption mechanism 5, a high-pressure air generator 6, an air outlet arc pipe 7, and a water outlet arc pipe 8.

[0041] The end of the suspension rope 1 is connected to the traveling vehicle 4. The traveling vehicle 4 can be an electric vehicle containing a battery as its power source. The traveling vehicle 4 has four wheels.

[0042] The high-pressure air generator 6 is fixed on the traveling vehicle 4 and can generate high-pressure air. The high-pressure air generator can be a high-pressure air compressor, a high-pressure air pump, or a gas booster.

[0043] The adsorption mechanism 5 can be two sets of electromagnets, respectively installed at the upper and lower ends of the traveling vehicle 4. When the electromagnets are energized, they generate magnetism and attract the wind turbine tower 2. This adsorption can be non-contact, for example, slightly away from the outer wall of the tower compared to the wheels. The attraction force should be sufficient to keep all four wheels of the traveling vehicle 4 pressed against the tower wall and prevent it from drifting around. However, the attraction force should not be too strong, making it difficult for the traveling vehicle 4 to move.

[0044] Two parallel connecting rods 9 are fixed to the lower end of the traveling vehicle 4. Each connecting rod 9 has an upper through hole and a lower through hole. The air outlet arc pipe 7 passes through the two upper through holes of the two connecting rods 9. The water outlet arc pipe 8 passes through the two lower through holes of the two connecting rods 9. The inner ring surface of the air outlet arc pipe 7 has multiple conical air nozzles 10. The outlet of each air nozzle 10 is an air outlet. The air outlets of all air nozzles 10 face the center of the air outlet arc pipe 7. The inner ring surface of the water outlet arc pipe 8 has multiple conical water nozzles 11. The outlet of each water nozzle 11 is a water outlet. The water outlets of all water nozzles 11 face the center of the water outlet arc pipe 8.

[0045] The high-pressure air generator 6 is connected to the air outlet arc pipe 7 via the air pipe 12, supplying high-pressure air to the air outlet arc pipe 7. The water outlet arc pipe 8 has a water inlet. A ground water supply vehicle can be connected to this water inlet via the water pipe 13 to supply high-pressure water to the water outlet arc pipe 8.

[0046] When the electromagnet is energized, it attracts the wind turbine tower 2, causing the four wheels of the traveling vehicle 4 to adhere to the outer wall of the wind turbine tower 2. The air outlet arc pipe 7 and the water outlet arc pipe 8 are both in a horizontal plane, and all the air jet nozzles 10 and all the water spray nozzles 11 spray water horizontally towards the center. When using this corrosion-resistant structure, water is sprayed first, followed by air jets on the water-sprayed areas to remove water stains and keep the outer wall of the tower dry.

[0047] Since the traveling vehicle 4 is located above the air outlet arc pipe 7 and the water outlet arc pipe 8, if the air outlet arc pipe 7 and the water outlet arc pipe 8 can only spray air and water horizontally, it will be difficult to clean the cylinder wall at the location of the traveling vehicle 4. Therefore, in one embodiment of this application, a rotatable air outlet arc pipe 7 and water outlet arc pipe 8 are provided, and their structure is as follows.

[0048] like Figure 5 The air outlet arc pipe 7 and the water outlet arc pipe 8 are identical, approximately semi-circular arc-shaped pipes. This approximate semi-circle can be achieved by having the middle section 701 of the air outlet arc pipe 7 be straight, with rounded sides, and the middle section 701 being shorter, making the overall shape approximately semi-circular and axially symmetrical. Similarly, the middle section of the water outlet arc pipe 8 is straight, with rounded sides, and the middle section is shorter, making the overall shape approximately semi-circular and axially symmetrical. The middle section 701 of the air outlet arc pipe 7 passes through the two upper through holes of the two connecting rods 9. The middle section of the water outlet arc pipe 8 passes through the two lower through holes of the two connecting rods 9.

[0049] like Figure 6 and Figure 7 The corrosion-resistant structure also includes four side ropes 14 and two sets of winding mechanisms. The two sets of winding mechanisms are mounted on the traveling vehicle 4. The upper set of winding mechanisms includes two motors 15 and two rollers 16. A combination of motors 15 and rollers 16 is mounted on each side of the upper end of the traveling vehicle 4. One motor 15 drives one roller 16 to rotate. One side rope 14 is wound around each roller 16. Preferably, the two side ropes 14 on both sides are symmetrically connected to the two ends of the water outlet arc pipe 8. The line connecting the two side ropes 14 and the two connection points of the water outlet arc pipe 8 is parallel to the middle section of the water outlet arc pipe 8.

[0050] The lower winding mechanism has the same structure as the upper winding mechanism, also including two motors 15 and two rollers 16, located on both sides of the lower end of the traveling vehicle 4. Each side is equipped with a combination of motors 15 and rollers 16, with one motor 15 driving one roller 16 to rotate. A side rope 14 is wound around each roller 16. Preferably, the two side ropes 14 on both sides are symmetrically connected to the middle positions of the two arc segments 702 on both sides of the air outlet arc pipe 7. The line connecting the two side ropes 14 and the two connection points of the air outlet arc pipe 7 is parallel to the middle section 701 of the air outlet arc pipe 7. The aforementioned two arc segments 702 are the arc segments 702 on both sides of the middle section 701 of the air outlet arc pipe 7, and the middle position of the two arc segments 702 is the middle position of each arc segment 702.

[0051] The arrangement of the four side ropes 14 and the two sets of winding mechanisms allows the upper side ropes 14 and the lower side ropes 14 to be staggered, providing ample room for movement for the two upper side ropes 14 and the two lower side ropes 14, and preventing interference during movement.

[0052] For each set of cleaning components, it is preferable that the radius of the water outlet arc pipe 8 is smaller than that of the air outlet arc pipe 7, and that the water outlet arc pipe 8 is located inside the air outlet arc pipe 7 in the vertical direction. This is beneficial for the water outlet arc pipe 8 to rotate upward at a large angle without touching the air outlet arc pipe 7.

[0053] In order to install water outlet arc pipes 8 and air outlet arc pipes 7 with different radii, the connecting rod 9 can be set to be L-shaped, with the upper and lower through holes staggered vertically, and the lower through hole closer to the tower cylinder, so that the air outlet arc pipe 7 and water outlet arc pipe 8 are staggered vertically, the radius of the water outlet arc pipe 8 is smaller, and the rotation angle of the water outlet arc pipe 8 is increased.

[0054] Activating the two motors 15 on the upper sides can simultaneously shorten or lengthen the two side ropes 14, causing the water outlet arc pipe 8 to change direction and spray high-pressure water upwards or downwards to spray to places where it is inconvenient for the water outlet arc pipe 8 to spray directly, such as the area where the top of the wind turbine tower 2 is occupied by the traveling vehicle 4 or where the bottom is equipped with stairs.

[0055] Activating the two motors 15 on the lower sides can simultaneously shorten or lengthen the other two side ropes 14, causing the exhaust arc pipe 7 to change direction and spray high-pressure air upwards or downwards to spray to places where the exhaust arc pipe 7 cannot spray directly.

[0056] When the air outlet arc pipe 7 and water outlet arc pipe 8 are rotated upwards to spray high-pressure air or high-pressure water, if the traveling vehicle 4 is still attached to the wind turbine tower 2, the high-pressure air or water will be sprayed onto the traveling vehicle 4, which is not conducive to cleaning the tower area covered by the traveling vehicle 4. Therefore, when spraying high-pressure air or high-pressure water upwards, it is also necessary to lift the traveling vehicle 4 away from the wind turbine tower 2. Therefore, in one embodiment of this application, four cylinders 17 are also provided on the traveling vehicle 4. Each cylinder 17 is electrically connected to the power supply of the traveling vehicle 4, and the cylinder 17 is connected to the high-pressure air generator 6. The high-pressure air generator 6 supplies high-pressure air to the cylinder 17 to drive the cylinder 17 to perform telescopic movement. When all the wheels of the traveling vehicle 4 are facing the wind turbine tower 2, the end of the telescopic shaft of each cylinder 17 is facing the wind turbine tower 2. When it is necessary to lift the traveling vehicle 4 away from the wind turbine tower 2, start each cylinder 17, and its telescopic shaft abuts against the wind turbine tower 2 to continue to extend, so that the traveling vehicle 4 is separated from the wind turbine tower 2. At this time, the air outlet arc pipe 7 and the water outlet arc pipe 8 can be rotated to first pass water for high-pressure water washing, then turn off the high-pressure water and turn on the air outlet arc pipe 7 to spray high-pressure air to dry the water-washed area.

[0057] When using the anti-corrosion structure for this wind turbine, one set of cleaning components is first placed at the top of the wind turbine tower 2, and the other set is placed at the bottom of the wind turbine tower 2. The top set of cleaning components first cleans and dries one side of the wind turbine tower 2 from top to bottom. When it reaches the bottom of the wind turbine tower 2, the other set of cleaning components moves to the top of the other side of the wind turbine tower 2, and then cleans and dries the wind turbine tower 2 from top to bottom from the other side. To ensure that the two sets of cleaning components cover the entire wind turbine tower 2 without requiring them to move left or right, the high-pressure air ejected from all the outlets of the air outlet arc pipe 7 when it is horizontally oriented towards the wind turbine tower 2 can cover the circumferential length of the wind turbine tower 2 by a factor greater than or equal to the circumference of the largest semicircle at the end of the wind turbine tower 2. Similarly, the high-pressure water ejected from all the outlets of the water outlet arc pipe 8 can cover the circumferential length of the wind turbine tower 2 by a factor greater than or equal to the circumference of the largest semicircle at the end of the wind turbine tower 2. This allows the two sets of cleaning components to completely cover the entire area of ​​the wind turbine tower 2 after cleaning on their respective sides.

[0058] In the aforementioned top-to-bottom cleaning and drying process, when the cleaning components are located at the top of the wind turbine tower 2, the traveling vehicle 4 can be lifted away from the wind turbine tower 2 using cylinder 17. The air outlet arc pipe 7 and water outlet arc pipe 8 are then rotated upwards to first wash the top of the wind turbine tower 2 with high-pressure water, and then the air outlet arc pipe 7 sprays high-pressure air to dry any remaining water stains after washing. After cleaning the top of the wind turbine tower 2, the air outlet arc pipe 7 and water outlet arc pipe 8 are rotated to a horizontal position, facing the outer wall of the wind turbine tower 2, to perform the same top-to-bottom cleaning and drying process.

[0059] Some wind turbines have ladders installed at the bottom of the wind turbine tower 2. The ladders can obstruct the movement of the cleaning components. For the above-mentioned top-down cleaning and drying process, when the cleaning components move to the bottom of the wind turbine tower 2, the air outlet arc pipe 7 and water outlet arc pipe 8 in the cleaning components can be rotated downwards toward the bottom of the wind turbine tower 2. First, high-pressure water spraying is performed, and then high-pressure air jet is used to dry the water stains, so that the wind turbine tower 2 is kept in a relatively dry state, reducing the risk of corrosion.

[0060] The air outlet arc pipe 7 and water outlet arc pipe 8 of the two sets of cleaning components are roughly semi-circular or larger than semi-circular arc shapes. During the up-and-down movement of the two sets of cleaning components, when the two sets of cleaning components move to the middle height position of the wind turbine tower 2, they meet. In order to avoid the two sets of cleaning components colliding, the radius of the air outlet arc pipe 7 of the first set of cleaning components can be set to be smaller than the radius of the air outlet arc pipe 7 and water outlet arc pipe 8 of the second set of cleaning components, and the radius of the water outlet arc pipe 8 of the first set of cleaning components is also smaller than the radius of the air outlet arc pipe 7 and water outlet arc pipe 8 of the second set of cleaning components. In this way, the two sets of cleaning components will not collide when they meet.

[0061] Although the radii of the air outlet arc pipe 7 and water outlet arc pipe 8 of the two sets of cleaning components are different, the weight of the walking vehicle 4 and other accessories can still be adjusted to make the weight of the two sets of cleaning components equal, so as to minimize the driving force required for walking.

[0062] The anti-corrosion structure for wind turbines in the above embodiments can clean dust and other pollutants attached to the wind turbine tower 2. After cleaning, the surface of the wind turbine tower 2 is clean and basically free of salt and other pollutants, which significantly reduces the corrosion of the galvanic cells, effectively protects the wind turbine, plays an anti-corrosion role, and extends the service life of the wind turbine, showing good application prospects.

[0063] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A corrosion-resistant structure for wind turbine generators, characterized in that, Includes a hoisting rope (1) and two sets of cleaning components installed at both ends of the hoisting rope (1); the hoisting rope (1) is used to hang on the wind turbine, and when the first set of the cleaning components is located at the top of one side of the wind turbine tower (2), the second set of the cleaning components is located at the bottom of the other side of the wind turbine tower (2); Each cleaning assembly includes a walking vehicle (4), an adsorption mechanism (5), a high-pressure air generator (6), an air outlet arc pipe (7), and a water outlet arc pipe (8). The suspension rope (1) is connected to the traveling vehicle (4); the traveling vehicle (4) is equipped with a power source; the high-pressure air generator (6) and the adsorption mechanism (5) are both fixed on the traveling vehicle (4) and are electrically connected to the power source; the air outlet arc pipe (7) and the water outlet arc pipe (8) are installed below the traveling vehicle (4), and the air outlet arc pipe (7) is closer to the traveling vehicle (4) than the water outlet arc pipe (8). The high-pressure air generator (6) is connected to the air outlet arc pipe (7); the inner ring surface of the air outlet arc pipe (7) has multiple air outlets, all facing the center of the air outlet arc pipe (7); the inner ring surface of the water outlet arc pipe (8) has multiple water outlets, all facing the center of the water outlet arc pipe (8); the water outlet arc pipe (8) also has a water inlet. The radius of the arc formed by the multiple air outlets is greater than the maximum radius of the wind turbine tower (2); the radius of the arc formed by the multiple water outlets is greater than the maximum radius of the wind turbine tower (2); when the adsorption mechanism (5) adsorbs onto the wind turbine tower (2), so that all the wheels of the traveling vehicle (4) are in contact with the wind turbine tower (2), one state of the multiple air outlets and the multiple water outlets is that they are all horizontally facing the wind turbine tower (2). With the multiple air outlets horizontally facing the wind turbine tower (2), the circumferential length of the air ejected from the multiple air outlets covering the wind turbine tower (2) is greater than or equal to the circumference of the largest end semicircle of the wind turbine tower (2). With the plurality of water outlets horizontally facing the wind turbine tower (2), the circumferential length of the water sprayed from the plurality of water outlets covering the wind turbine tower (2) is greater than or equal to the circumference of the largest end semicircle of the wind turbine tower (2). Each set of the cleaning components includes a connecting rod (9), four side ropes (14) and two sets of winding mechanisms; the connecting rod (9) is fixed to the traveling vehicle (4); the connecting rod (9) has an upper through hole and a lower through hole; the middle section (701) of the air outlet arc pipe (7) rotatably passes through the upper through hole; the middle section of the water outlet arc pipe (8) rotatably passes through the lower through hole; Both sets of the winding mechanisms are mounted on the traveling vehicle (4); one set of the winding mechanisms is connected to both sides of the air outlet arc pipe (7) by two side ropes (14); the other set of the winding mechanisms is connected to both sides of the water outlet arc pipe (8) by two other side ropes (14); each set of the winding mechanisms is electrically connected to the power source, which can drive the two side ropes (14) to shorten and lengthen simultaneously, so that the air outlet arc pipe (7) rotates vertically, or the water outlet arc pipe (8) rotates vertically.

2. The anti-corrosion structure for wind turbine generators according to claim 1, characterized in that, Each of the cleaning components includes two of the connecting rods (9); The middle section (701) of the air outlet arc pipe (7) is straight and rotatably passes through the two upper through holes of the two connecting rods (9); the middle section (701) of the air outlet arc pipe (7) is parallel to the line connecting the two connection points of the two side ropes (14) that connect the air outlet arc pipe (7). The middle section of the water outlet arc pipe (8) is straight and rotatably passes through the two lower through holes of the two connecting rods (9); the middle section of the water outlet arc pipe (8) is parallel to the line connecting the two connection points of the two side ropes (14) that connect the water outlet arc pipe (8).

3. The anti-corrosion structure for wind turbine generators according to claim 1 or 2, characterized in that, In each of the cleaning components, the radius of the air outlet arc pipe (7) is greater than the radius of the water outlet arc pipe (8); when the adsorption mechanism (5) adsorbs onto the wind turbine tower (2), so that all the wheels of the traveling vehicle (4) are in contact with the wind turbine tower (2), the air outlet arc pipe (7) is located outside the water outlet arc pipe (8) in the vertical direction.

4. The anti-corrosion structure for wind turbine generators according to claim 3, characterized in that, In each set of cleaning components, one set of winding mechanisms is located above another set of winding mechanisms; the two side ropes (14) of the upper set of winding mechanisms are connected to both ends of the water outlet arc pipe (8); the middle section (701) of the air outlet arc pipe (7) has two arc sections (702) on both sides; the two side ropes (14) of the lower set of winding mechanisms are connected to the middle position of the arc sections (702) on both sides of the air outlet arc pipe (7).

5. The anti-corrosion structure for wind turbine generators according to claim 1, characterized in that, Each set of cleaning components also includes several cylinders (17), all mounted on the traveling vehicle (4); each cylinder (17) is electrically connected to the power source, and each cylinder (17) is also connected to the high-pressure air generator (6); when all the wheels of the traveling vehicle (4) face the wind turbine tower (2), the telescopic shaft of each cylinder (17) faces the wind turbine tower (2); each cylinder (17) can drive its telescopic shaft to abut against the wind turbine tower (2), so that the traveling vehicle (4) is disengaged from the wind turbine tower (2).

6. The anti-corrosion structure for wind turbine generators according to claim 1, characterized in that, The adsorption mechanism (5) includes an electromagnet; the electromagnet is mounted on the traveling vehicle (4); the electromagnet is electrically connected to the power source.

7. The anti-corrosion structure for wind turbine generators according to claim 1, characterized in that, The radius of the air outlet arc pipe (7) of the second set of cleaning components is greater than the radius of the air outlet arc pipe (7) and water outlet arc pipe (8) of the first set of cleaning components; the radius of the water outlet arc pipe (8) of the second set of cleaning components is greater than the radius of the air outlet arc pipe (7) and water outlet arc pipe (8) of the first set of cleaning components; the weight difference between the two sets of cleaning components is within 10%.

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