Wind turbine blade cleaning device

Abstract

The present invention discloses a wind turbine blade cleaning device, comprising a positioning device, an integrated cleaning platform and a crawling wheel, wherein the integrated cleaning platform comprises a first electric telescopic rod, a gripping platform, a left gripping platform, a right gripping platform, a second electric telescopic rod, a spraying device and a cleaning feeler, wherein the first electric telescopic rod is mounted on the positioning device, the telescopic end of the first electric telescopic rod is fixedly connected to the gripping platform, the root of the left gripping platform is slidingly arranged, the root of the right gripping platform is slidingly arranged, the telescopic end of the second electric telescopic rod is simultaneously connected to the left gripping platform and the right gripping platform, the second electric telescopic rod can pull the root of the left gripping platform and the root of the right gripping platform to move laterally, the spraying device is mounted on the left gripping platform and the right gripping platform, and opens on the gripping surfaces of the left gripping platform and the right gripping platform. The present invention does not require manual climbing to the top of the wind turbine, which significantly reduces the safety risk of manual operation, and the cleaning device has the ability to operate stably for a long time and to cover a wide range of cleaning, which is very suitable for the continuous large-area cleaning needs of wind turbine blades.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine blade cleaning, and in particular to a wind turbine blade cleaning device. Background Art

[0002] As a key clean energy, wind power generation has been favored by many countries around the world due to its huge energy reserve potential and broad market prospects. In my country, with the advancement of green, low-carbon and digital transformation, the wind power industry has developed rapidly, and the penetration rate of wind farms has increased day by day.

[0003] The increase in wind farms has also brought a series of challenges, especially the cleaning and maintenance of wind turbines. Wind turbine blades, as the core components of wind turbines, often accumulate a lot of dirt after long-term operation, especially oil stains caused by gearbox oil leakage. These dirt will not only increase the friction resistance between the blades and the air, reduce the conversion efficiency of wind energy, and thus affect the economic benefits of the wind farm, but may also cover up potential damage to the blades and increase the risk of safety accidents.

[0004] At present, the traditional manual high-altitude operation method has great safety risks when cleaning wind turbine blades. At the same time, due to the extreme and changeable environment of wind farms, the efficiency of this cleaning method is often low and the cleaning area is limited. This not only increases the maintenance cost of the blades, but also causes unnecessary economic waste.

[0005] Therefore, it is particularly important to regularly clean the surface of wind turbine blades, which can not only effectively improve the wind energy conversion efficiency and power plant revenue, but also promptly detect and resolve blade damage and safety hazards, thereby ensuring the stable, efficient and safe operation of wind farms. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a wind turbine blade cleaning device.

[0007] In order to achieve the above technical purpose, the technical solution adopted by the present invention is:

[0008] A wind turbine blade cleaning device comprises a positioning device, an integrated cleaning platform and a crawling wheel, wherein the crawling wheel is mounted on the positioning device, the positioning device can move up and down or be fixed along the tower of the wind turbine, when the positioning device moves up and down along the tower, the crawling wheel contacts the tower, the integrated cleaning platform comprises a first electric telescopic rod, a clamping hand platform, a left clamping hand, a right clamping hand, a second electric telescopic rod, a spraying device and a cleaning tentacles, the first electric telescopic rod is mounted on the positioning device, the telescopic end of the first electric telescopic rod is fixedly connected to the clamping hand platform, the root of the left clamping hand is slidably arranged on the clamping hand platform, the root of the right clamping hand is slidably arranged on the clamping hand platform The left and right grippers are electrically connected to each other, and the second electric telescopic rod can drive the root of the left and right grippers to move laterally around the gripper platform, so that the left and right grippers cooperate to clamp the wind turbine blades of the wind turbine. The spraying device is installed on the left and right grippers, and opens on the clamping surfaces of the left and right grippers. The spraying device can spray cleaning liquid outward through its own opening. Cleaning tentacles are distributed on the clamping surfaces of the left and right grippers, and the cleaning tentacles clean the wind turbine blades by scraping.

[0009] To optimize the technical solution, further improvements were made including:

[0010] The above-mentioned positioning device includes a U-shaped structural body, an adsorption air pressure bin, an air outlet and a centrifugal fan. The shape of the U-shaped structural body is adapted to the curvature of the tower. The adsorption air pressure bin is installed around the U-shaped structural body. An adsorption port is provided on the adsorption air pressure bin. The adsorption port is close to the surface of the tower. The air outlet is provided on the adsorption air pressure bin. The centrifugal fan is installed on the U-shaped structural body. The centrifugal fan can discharge the gas in the adsorption air pressure bin from the air outlet, so that negative pressure is generated at the adsorption port. The positioning device is adsorbed on the tower through the negative pressure.

[0011] The positioning device is provided with a traction opening structure, which is used to connect with the steel cable inside the wind turbine cabin. The steel cable inside the wind turbine cabin can pull the positioning device to move up and down along the tower.

[0012] There are several crawling wheels installed at the four corners of the U-shaped structure body.

[0013] The wheel body surface of the above-mentioned crawling wheel is provided with an adhesion layer, and the surface of the adhesion layer is rough.

[0014] The above-mentioned gripping platform is provided with a sliding channel, and the left gripping hand and the right gripping hand are both arranged on the sliding channel. When the second electric telescopic rod is in operation, it can drive the left gripping hand and the right gripping hand to slide on the sliding channel. When the second electric telescopic rod stops, the left gripping hand and the right gripping hand are fixed on the sliding channel.

[0015] The above-mentioned left gripper and right gripper both include a gripper frame, a gripper air chamber and a spring structure. The gripper frame is connected to the gripper air chamber through the spring structure. The gripper air chamber is used to contact the wind turbine blades. The cleaning tentacles are arranged on the surface of the gripper air chamber. The liquid supply hose of the spray device is arranged in the gripper air chamber. The opening of the spray device is located on the surface of the gripper air chamber.

[0016] The cleaning tentacles are arranged linearly on the surface of the gripper inflation chamber, and different cleaning tentacles have different lengths.

[0017] The above-mentioned gripping frame is a hollow structure, and the gripping frame is made of aluminum alloy material.

[0018] The above-mentioned gripper inflation bin is provided with a pressurizing port, which is used to connect to an external high-pressure source and input gas into the gripper inflation bin to inflate the gripper inflation bin.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention does not require manual climbing to the top of the wind turbine, which significantly reduces the safety risks of manual operation. At the same time, the cleaning equipment has the ability to operate stably for a long time and cover a wide range of cleaning, which is very suitable for the continuous large-area cleaning needs of wind turbine blades. The design of the present invention can cope with extreme and unstable environmental conditions. These characteristics not only effectively reduce the cost of wind farm operation, but also show a wide range of engineering application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a working flow chart of a wind turbine blade cleaning device of the present invention;

[0022] Figure 2 It is a working scene schematic diagram of a wind turbine blade cleaning device of the present invention;

[0023] Figure 3 It is a structural schematic diagram of a positioning device of a wind turbine blade cleaning device of the present invention;

[0024] Figure 4 It is a front view of a creeper wheel of a wind turbine blade cleaning device of the present invention;

[0025] Figure 5 is a front view of the integrated cleaning platform of the present invention;

[0026] Figure 6 It is a front view of the hand clamping air chamber surface of the hand clamping structure in the integrated cleaning platform of the present invention.

[0027] The reference numerals in the figure are: wind turbine blade 1, tower 2, positioning device 3, U-shaped structure body 301, adsorption air pressure chamber 302, traction port structure 303, air outlet 304, centrifugal fan 305, integrated cleaning platform 4, first electric telescopic rod 401, gripping platform 402, sliding channel 403, left gripping hand 404, right gripping hand 405, second electric telescopic rod 406, spraying device 407, cleaning tentacles 408, gripping hand frame 409, gripping hand inflation chamber 410, spring structure 411, pressurizing port 412, crawling wheel 5, adhesion layer 501. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0029] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0030] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0031] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0032] Combination Figure 1-Figure 6 As shown, the present invention proposes a wind turbine blade cleaning device, which consists of a positioning device 3, an integrated cleaning platform 4, and a crawling wheel 5, wherein the positioning device 3 is as shown in FIG. Figure 3 As shown, the integrated cleaning platform 4 is composed of a centrifugal fan 305, an adsorption air pressure chamber 302, a traction port structure 303 and an air outlet 304. Figure 5 As shown, it is composed of a first electric telescopic rod 401, a second electric telescopic rod 406, a gripping platform 402, a left gripping hand 404, a right gripping hand 405, a sliding channel 403, a spraying device 407, a cleaning feeler 408, a gripping hand frame 409, a gripping hand inflatable chamber 410, a spring structure 411 and a pressurizing port 412 module, and the crawling wheel 5 is as shown Figure 5 As shown, the outer surface is formed by an adhesive layer 501 .

[0033] When applying this example, it is necessary to provide the device with an energy supply unit and a liquid supply unit in order to better use the device. It is worth noting that the energy supply unit and liquid supply unit proposed by the device can also be composed of a transmission line and a liquid supply pipe.

[0034] The upper and lower surfaces of the positioning device 3 are provided with square air outlets 304 .

[0035] The positioning device 3 is provided with a crawling wheel 5 for advancing. The material is rubber, and the contact surface between the crawling wheel 5 and the tower 2 is provided with an adhesion layer 501 to achieve the effect of enhancing friction.

[0036] The positioning device 3 is provided with an adsorption air pressure chamber 302 which is beneficial to strengthening the connection between the U-shaped structure body 301 and the tower 2. The adsorption air pressure chamber 302 is made of a silicone material with good telescopic performance and a smooth inner wall.

[0037] A centrifugal fan 305 is also provided inside the positioning device 3 to evacuate the air in the adsorption air pressure bin 302. The centrifugal fan 305 rotates at a high speed to evacuate the air inside the adsorption air pressure bin 302, and the adsorption port of the adsorption air pressure bin 302 fits with the surface of the tower 2 to achieve a negative pressure state, so that the positioning device 3 is adsorbed on the surface of the tower 2.

[0038] The telescopic end of the first electric telescopic rod 401 of the integrated cleaning platform 4 is fixedly connected to the clamping platform 402, and the left clamping hand 404 and the right clamping hand 405 are arranged on the sliding channel 403 of the clamping platform 402, one on the left and one on the right. The first electric telescopic rod 401 is used to push the integrated cleaning platform 4 close to or away from the positioning device 3, so that the integrated cleaning platform 4 can reach the vicinity of the wind turbine blade 1. The second electric telescopic rod 406 is installed on the clamping platform 402, and the second electric telescopic rod 406 can push the left clamping hand 404 and the right clamping hand 405 to slide on the sliding channel 403, so that the left clamping hand 404 and the right clamping hand 405 clamp the wind turbine blade 1.

[0039] The left gripper 404 and the right gripper 405 have the same structure, both including a gripper frame 409, a gripper air chamber 410 and a spring structure 411. The gripper frame 409 is connected to the gripper air chamber 410 through the spring structure 411. The gripper air chamber 410 is used to contact the wind turbine blade 1. The cleaning feeler 408 is arranged on the surface of the gripper air chamber 410. The liquid supply hose of the spray device 407 is arranged in the gripper air chamber 410. The opening of the spray device 407 is located on the surface of the gripper air chamber 410. The gripper frame 409 adopts an aluminum alloy structure and is designed in a hollow form. This design can effectively ensure that the gripper air chamber 410 remains stable after inflation and pressurization, and can be flexibly extended and retracted when necessary, ensuring the reliability and stability of the equipment during operation.

[0040] The cleaning liquid is sprayed out from the opening of the spray device 407 through the liquid supply hose, thereby achieving the effect of wetting the surface of the wind turbine blade 1, thereby facilitating the next step of cleaning.

[0041] The cleaning tentacles 408 are designed to be arranged linearly, with the ends covered with a plurality of silicone dots. At the same time, the lengths of the cleaning tentacles are designed to be non-uniform, with one long and one short. By utilizing the friction with the surface of the wind turbine blade 1, the cleaning tentacles 408 can effectively clean the oil stains on the surface of the blade, ensuring that the cleaning effect is optimal.

[0042] When using an efficient wind turbine blade cleaning device, the work flow diagram is as follows: Figure 1 shown.

[0043] First, pull the steel cable inside the wind turbine cabin to the ground to ensure that it is completely flat. Next, place the positioning device 3 vertically on the surface of the tower 2 and hang the steel cable to ensure that the connection is firm and check and confirm. After confirming that it is firm, pressurize the clamping hand inflation chamber 410 and use the pressure port 412 to pressurize until the clamping hand inflation chamber 410 is full, ensuring that the cleaning tentacles 408 are fully deployed and arranged in a linear state.

[0044] After the preliminary preparations are completed, the equipment is moved forward by pulling up the steel cable under the drive of the crawling wheel 5. (The outer surface of the crawling wheel 5 has an adhesive layer 501, which helps to smoothly carry out the pulling process.) Once the equipment reaches the root of the wind turbine blade, the pulling operation is stopped.

[0045] At the same time, the centrifugal fan 305 starts to operate, and uses the air outlet 304 to discharge the air inside the adsorption air pressure chamber 302, thereby forming a negative pressure on the surface of the tower 2 to ensure that the equipment is firmly adsorbed.

[0046] Then, the integrated cleaning platform 4 starts to work, the first electric telescopic rod 401 pushes the integrated cleaning platform 4 outward, and the left clamping hand 404 and the right clamping hand 405 are respectively located on the left and right sides of the wind turbine blade 1, and the second electric telescopic rod 406 drives the left clamping hand 404 and the right clamping hand 405 to move closer to each other, clamping the wind turbine blade 1, and the liquid supply hose sprays the cleaning liquid evenly on the surface of the wind turbine blade 1 through the spraying device 407.

[0047] After the cleaning liquid spraying is completed, the centrifugal fan 305 stops operating and releases the steel cables step by step. Through the special arrangement design of the cleaning tentacles 408, the friction force with the surface of the wind turbine blades is used to clean the wind turbine blades comprehensively and thoroughly.

[0048] The above are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A wind turbine blade cleaning device, characterized in that: The invention comprises a positioning device (3), an integrated cleaning platform (4) and a crawling wheel (5), wherein the crawling wheel (5) is mounted on the positioning device (3), the positioning device (3) can be moved up and down or fixed along the tower (2) of the wind turbine, when the positioning device (3) moves up and down along the tower (2), the crawling wheel (5) contacts the tower (2), the integrated cleaning platform (4) comprises a first electric telescopic rod (401), a gripping platform (402), a left gripping hand (404), a right gripping hand (405), a second electric telescopic rod (406), a spraying device (407) and a cleaning feeler (408), the first electric telescopic rod (401) is mounted on the positioning device (3), the first electric telescopic rod (401) is mounted on the positioning device (3), the first electric telescopic rod (406 ... The telescopic end of the retractable rod (401) is fixedly connected to the gripping platform (402), the root of the left gripping hand (404) is slidably arranged on the gripping platform (402), and the root of the right gripping hand (405) is slidably arranged on the gripping platform (402). The second electric telescopic rod (406) is installed on the gripping platform (402), and the telescopic end of the second electric telescopic rod (406) is simultaneously transmission-connected to the left gripping hand (404) and the right gripping hand (405). The second electric telescopic rod (406) can drive the root of the left gripping hand (404) and the root of the right gripping hand (405) to move laterally around the gripping platform (402), so that the left gripping hand (404) and the right gripping hand (405) cooperate to grip the wind turbine blade (1) of the wind turbine. The spraying device (407) is installed on the left gripper (404) and the right gripper (405), and is opened on the clamping surfaces of the left gripper (404) and the right gripper (405). The spraying device (407) can spray cleaning liquid outward through its own opening. The cleaning tentacles (408) are distributed on the clamping surfaces of the left gripper (404) and the right gripper (405). The cleaning tentacles (408) clean the wind turbine blades (1) by scraping. The gripper platform (402) is provided with a sliding channel (403). The left gripper (404) and the right gripper (405) are both arranged on the sliding channel (403). When the second electric telescopic rod (406) is in operation, it can drive the left gripper (404) and the right gripper (405) to move. The hand (405) slides on the sliding channel (403). When the second electric telescopic rod (406) stops, the left clamping hand (404) and the right clamping hand (405) are fixed on the sliding channel (403). The positioning device (3) comprises a U-shaped structural body (301), an adsorption air pressure bin (302), an air outlet (304) and a centrifugal fan (305). The shape of the U-shaped structural body (301) is adapted to the curvature of the tower (2). The adsorption air pressure bin (302) is installed around the U-shaped structural body (301). An adsorption port is provided on the adsorption air pressure bin (302). The adsorption port is close to the surface of the tower (2). The air outlet (304) is provided on the adsorption air pressure bin (302).The centrifugal fan (305) is installed on the U-shaped structural body (301). The centrifugal fan (305) can discharge the gas in the adsorption air pressure chamber (302) from the air outlet (304), so that negative pressure is generated at the adsorption port. The positioning device (3) is adsorbed on the tower (2) by the negative pressure.

2. A wind turbine blade cleaning device according to claim 1, characterized in that: The positioning device (3) is provided with a traction opening structure (303), and the traction opening structure (303) is used to connect with the steel cable inside the wind turbine cabin. The steel cable inside the wind turbine cabin can pull the positioning device (3) to move up and down along the tower (2).

3. A wind turbine blade cleaning device according to claim 2, characterized in that: There are a plurality of crawling wheels (5) installed at the four corners of the U-shaped structural body (301).

4. A wind turbine blade cleaning device according to claim 3, characterized in that: The surface of the wheel body of the crawling wheel (5) is provided with an adhesion layer (501), and the surface of the adhesion layer (501) is rough.

5. A wind turbine blade cleaning device according to claim 4, characterized in that: The left gripper (404) and the right gripper (405) both comprise a gripper frame (409), a gripper air chamber (410) and a spring structure (411); the gripper frame (409) is connected to the gripper air chamber (410) via the spring structure (411); the gripper air chamber (410) is used to contact the wind turbine blade (1); the cleaning antenna (408) is arranged on the surface of the gripper air chamber (410); the liquid supply hose of the spray device (407) is arranged in the gripper air chamber (410); and the opening of the spray device (407) is located on the surface of the gripper air chamber (410).

6. A wind turbine blade cleaning device according to claim 5, characterized in that: The cleaning tentacles (408) are arranged linearly on the surface of the gripper inflation chamber (410), and different cleaning tentacles (408) have different lengths.

7. The wind turbine blade cleaning device according to claim 5, characterized in that: The gripping frame (409) is a hollow structure and is made of aluminum alloy.

8. The wind turbine blade cleaning device according to claim 5, characterized in that: The gripper inflation chamber (410) is provided with a pressurizing port (412), and the pressurizing port (412) is used to connect to an external high-pressure source and input gas into the gripper inflation chamber (410) to inflate the gripper inflation chamber (410).

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