A self-cleaning wind turbine casing and offshore wind turbine.

Abstract

A self-cleaning wind turbine casing and offshore wind turbine are disclosed. The wind turbine casing includes: a casing body and a cleaning assembly; the upper surface of the casing body has a top surface and an inclined outer surface along its length; the cleaning assembly is installed on the top surface; the side and bottom surfaces of the casing body are transitioned by an arc surface; a windbreak shell is installed on the top surface; the lower side of the windbreak shell has an opening facing and connecting to the outer inclined surface; a water supply pipe is installed in the casing body, and the output end of the water supply pipe is connected to the windbreak shell for supplying cleaning liquid to the windbreak shell, allowing the cleaning liquid to flow through the windbreak shell and exit onto the outer inclined surface and the arc surface. This solution allows the cleaning liquid to flow through the outer inclined surface and the arc surface, which can remove surface contaminants from the outer inclined surface and the arc surface, solving the problem of the difficulty in cleaning the casing of existing wind turbines in mid-air.

Description

Technical Field

[0001] This invention relates to the field of offshore wind turbines, and more particularly to an offshore wind turbine with self-cleaning function and a wind turbine housing. Background Technology

[0002] Offshore wind turbines convert wind energy into mechanical work, which drives the rotor to rotate and ultimately output alternating current (AC) electricity. Offshore wind turbines generally consist of components such as a rotor, generator (including mounting hardware), directional control (tail fin), tower, speed limiting safety mechanism, and energy storage device. The turbine casing, as a crucial structure protecting the internal core components, is constantly exposed to various natural environments, accumulating various types of pollutants. This is especially true in coastal areas where the unique environmental conditions cause the accumulation of multiple pollutants, such as salt deposits (which accelerate metal corrosion) and biological contaminants (e.g., bird droppings). These pollutants significantly impact equipment performance and lifespan. These pollutants not only reduce power generation efficiency but also accelerate material aging and increase the risk of failure, thus requiring regular cleaning. Current technology primarily relies on manual cleaning or the use of drones, but these methods are cumbersome and unsuitable for regular maintenance of offshore wind turbines in coastal areas. Summary of the Invention

[0003] The purpose of this invention is to provide a self-cleaning wind turbine housing, which has an upper top surface and an outer inclined surface on the upper surface of the main body of the housing, and a cleaning component is provided on the upper top surface at a relatively high position. A water supply pipe outputs cleaning liquid to the windshield housing. The cleaning liquid flows through the outer inclined surface and the arc surface, which can remove surface contaminants from the outer inclined surface and the arc surface.

[0004] The present invention also proposes a self-cleaning offshore wind turbine, which is provided with the above-mentioned self-cleaning wind turbine housing.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A wind turbine housing with self-cleaning function, comprising: a housing body and a cleaning assembly;

[0007] The upper surface of the outer shell body is provided with a top surface and an inclined outer surface along the length direction from high to low; the cleaning assembly is installed on the top surface; the side surface and bottom surface of the outer shell body are transitioned by an arc surface;

[0008] The cleaning assembly includes: a windshield and a water supply pipe;

[0009] The windshield is installed on the top surface; the windshield has an opening on its lower side, which faces and connects to the outer inclined surface; the water supply pipe is installed on the outer shell body, and the output end of the water supply pipe is connected to the windshield for outputting cleaning liquid to the windshield, so that the cleaning liquid flows through the windshield and is output to the outer inclined surface and the arc surface.

[0010] Alternatively, the outer casing body may be provided with a water-guiding top cover;

[0011] The upper surface of the water guide cover is provided with an upper top surface and an outer inclined surface; the interior of the water guide cover is provided with a drainage channel along the length direction; the input end of the drainage channel is connected to the windproof shell; the two sides of the water guide cover are provided with a plurality of side holes arranged in sequence along the length direction, the side holes facing the arc surface, and the side holes are connected to the output end of the drainage channel.

[0012] Optimally, in the arrangement of the plurality of side holes, the diameter of the side holes decreases in the direction away from the windshield.

[0013] Optimally, the cleaning assembly further includes: an L-shaped transfer housing;

[0014] Multiple L-shaped transfer shells are horizontally extended on the arc surface; the interior of each L-shaped transfer shell is provided with an L-shaped channel; the L-shaped channel is provided with an upper oblique part and a lower oblique part, the lower end of the upper oblique part is connected to the upper end of the lower oblique part; the upper end of the upper oblique part faces the arc surface obliquely upward, and the lower end of the lower oblique part faces the arc surface obliquely downward.

[0015] Optimally, the outer surface of the L-shaped transfer shell is provided with a streamlined structure.

[0016] Alternatively, the outer surface of the housing body may be coated with a self-cleaning coating.

[0017] Alternatively, the outer inclined surface may be provided with retaining edges on both sides.

[0018] Alternatively, the cleaning assembly may further include: a water tank;

[0019] The water tank is installed on the windproof shell, and the side of the water tank has a tank opening facing the shell opening; the input end of the drainage channel is connected to the interior of the water tank; the output end of the water supply pipe is used to output cleaning liquid to the water tank; the water tank is used to store a portion of the cleaning liquid and output the cleaning liquid to the shell opening and the drainage channel.

[0020] Alternatively, the cleaning assembly may further include: a water outlet pipe and a solenoid valve;

[0021] The inlet end of the water outlet pipe is connected to the bottom of the water tank, and the outlet end of the water outlet pipe is connected to the drainage channel; the solenoid valve is installed on the water outlet pipe.

[0022] A self-cleaning offshore wind turbine is provided with the casing of the aforementioned self-cleaning wind turbine generator set.

[0023] Compared with the prior art, one of the above technical solutions has the following beneficial effects:

[0024] This solution provides a self-cleaning wind turbine casing. The casing has an upper top surface and an outer slope on its upper surface. A cleaning component is located on the upper top surface at a relatively high position. A water pipe outputs cleaning liquid to the windshield. The cleaning liquid flows over the outer slope and the arc surface, which can remove surface contaminants from the outer slope and the arc surface, thereby solving the problem that the casing of existing wind turbines is difficult to clean in mid-air. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of one embodiment of an offshore wind turbine;

[0026] Figure 2 This is a schematic diagram of the structure of one embodiment of the cleaning component;

[0027] Figure 3 This is a cross-sectional structural diagram of one embodiment of the cleaning assembly;

[0028] Figure 4 This is a structural schematic diagram of one embodiment of the L-shaped transfer shell.

[0029] in:

[0030] 1. Outer shell body; 2. Cleaning assembly; 11. Top surface; 12. Outer slope; 13. Water guide cover; 14. Drainage channel; 15. Side hole; 16. Edge guard; 17. Arc surface; 21. Windproof shell; 22. Water supply pipe; 23. L-shaped transfer shell; 24. Water tank; 25. Water outlet pipe; 26. Solenoid valve; 211. Shell opening; 241. Box opening; 230. L-shaped channel; 231. Sloping upper part; 232. Sloping lower part; 233. Streamlined structure. Detailed Implementation

[0031] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0033] like Figure 1-4 A wind turbine housing with self-cleaning function, comprising: housing body 1 and cleaning component 2;

[0034] The upper surface of the outer shell body 1 is provided with an upper top surface 11 and an inclined outer slope 12 along the length direction from high to low; the cleaning assembly 2 is installed on the upper top surface 11; the side surface and bottom surface of the outer shell body 1 are transitioned by an arc surface 17;

[0035] The cleaning assembly 2 includes: a windshield 21 and a water supply pipe 22;

[0036] The windproof shell 21 is installed on the upper top surface 11; the windproof shell 21 has a shell opening 211 on its lower side, which faces and connects to the outer inclined surface 12; the water supply pipe 22 is disposed on the outer shell body 1, and the output end of the water supply pipe 22 is connected to the windproof shell 21 for outputting cleaning liquid to the windproof shell 21, so that the cleaning liquid flows through the windproof shell 21 and is output to the outer inclined surface 12 and the arc surface 17.

[0037] This solution provides a self-cleaning wind turbine casing. The casing body 1 has an upper top surface 11 and an outer inclined surface 12 on its upper surface. A cleaning component 2 is provided on the upper top surface 11 at a relatively high position. A water supply pipe 22 outputs cleaning liquid to the windshield shell 21. The cleaning liquid flows through the outer inclined surface 12 and the arc surface 17, which can remove surface contaminants from the outer inclined surface 12 and the arc surface 17, thereby solving the problem that the casing of existing wind turbines is difficult to clean in mid-air.

[0038] Specifically, the wind turbine generator is installed inside the outer casing 1. The wind turbine generator is mainly a system that converts the kinetic energy of wind into electrical energy. The upper surface of the outer casing 1 has an upper top surface 11 and an outer inclined surface 12, which are distributed from high to low. The upper top surface 11 is the main cleaning location of the wind turbine generator casing, and common pollutants are salt spray particles and bird droppings. The windshield shell 21 is installed on the upper top surface 11. The inlet end of the water pipe 22 is connected to the input source of the cleaning liquid, and the outlet end of the water pipe 22 outputs the cleaning liquid to the windshield shell 21. The side of the windshield shell 21 has a shell opening 211 facing the outer inclined surface 12. The cleaning liquid inside the windshield shell 21 is discharged through the shell opening 211. The windshield shell 21 has a shielding effect on the output location of the cleaning liquid, which allows the cleaning liquid to be discharged. The cleaning liquid is concentrated and output to the upper surface of the outer shell 1, thereby preventing the cleaning liquid from being completely deviated from the upper surface of the outer shell 1 due to environmental interference during output; and since the shell opening 211 is close to the bottom of the side of the windshield 21, in some embodiments, the liquid level of the cleaning liquid rises to the shell opening 211 and flows out to the shell opening 211, and is transferred to the outer inclined surface 12; the cleaning liquid flows obliquely along the outer inclined surface 12 under the action of gravity, which can carry away the contaminants on the upper surface of the outer shell 1; the side and bottom surfaces of the outer shell 1 are arc surfaces 17, and the cleaning liquid falls to the arc surface 17 under the action of gravity, that is, the cleaning liquid can form branches that are transferred to the arc surface 17 during the flow on the outer inclined surface 12, thereby carrying away the contaminants on the arc surface 17, and also cooling the outer surface of the outer shell 1.

[0039] The cleaning liquid is a liquid with cleaning function, such as tap water or wax. The water supply pipe 22 can be connected to a faucet to directly output tap water; the water supply pipe 22 is connected to a pump body, which outputs water from the water storage tank below the offshore wind turbine to the windshield 21.

[0040] Alternatively, the outer shell body 1 may be provided with a water-guiding cover 13;

[0041] The upper surface of the water-guiding cover 13 is provided with an upper top surface 11 and an outer inclined surface 12; the interior of the water-guiding cover 13 is provided with a drainage channel 14 along the length direction; the input end of the drainage channel 14 is connected to the windproof shell 21; the two sides of the water-guiding cover 13 are provided with a plurality of side holes 15 arranged sequentially along the length direction, the side holes 15 face the arc surface 17, and the side holes 15 are connected to the output end of the drainage channel 14.

[0042] The water-guiding cover 13 is disposed on the upper surface of the outer shell body 1. The upper top surface 11 and the outer inclined surface 12 of the upper surface of the water-guiding cover 13 mainly guide water out along the outer inclined surface 12, so that the water flow carries away the contaminants on the upper surface of the outer shell body 1, and can also cool the outer surface of the outer shell body 1. In this embodiment, a drainage channel 14 is opened inside the water-guiding cover 13. The input end of the drainage channel 14 is located in the windproof shell 21. The cleaning liquid output from the water supply pipe 22 can be transferred to the drainage channel 14 inside the windproof shell 21. The side of the water-guiding cover 13 is provided with side holes 15, which are distributed along the length. Therefore, the cleaning liquid output from the drainage channel 14 is output from different side holes 15, and the cleaning liquid falls to different areas of the arc surface 17, thereby carrying away the contaminants on the arc surface 17 and preventing contaminants from remaining on the side of the outer shell body 1.

[0043] Optimally, among the plurality of side holes 15 arranged, the diameter of the side holes 15 decreases in the direction away from the windshield 21.

[0044] The side holes 15 are arranged along the length of the water guide cover 13. In this design, the side holes 15 at different positions are designed with different diameters. The diameter of the side holes 15 decreases as they move away from the windshield 21. The side holes 15 closer to the windshield 21 have larger diameters. Since the side holes 15 are closer to the windshield 21, increasing the diameter of the side holes 15 at these locations increases the probability of the cleaning liquid being discharged from the side holes 15, making it easier for more cleaning liquid to be discharged. The side holes 15 farther from the windshield 21 have smaller diameters. The cleaning liquid will eventually be output at the output end of the outer inclined surface 12. The side holes 15 farther from the windshield 21 are easier to discharge the cleaning liquid. Therefore, the smaller diameter can prevent the discharge of the cleaning liquid from being too large. In this way, multiple side holes 15 can evenly output the cleaning liquid to the arc surface 17, thereby increasing the contact probability between the arc surface 17 and the cleaning liquid, making the cleaning more comprehensive and improving the cleaning effect.

[0045] Alternatively, the cleaning assembly 2 may further include: an L-shaped transfer housing 23;

[0046] Multiple L-shaped transfer shells 23 are horizontally extended on the arc surface 17; the interior of each L-shaped transfer shell 23 is provided with an L-shaped channel 230; the L-shaped channel 230 is provided with an upper oblique portion 231 and a lower oblique portion 232, the lower end of the upper oblique portion 231 is connected to the upper end of the lower oblique portion 232; the upper end of the upper oblique portion 231 faces the arc surface 17 obliquely upward, and the lower end of the lower oblique portion 232 faces the arc surface 17 obliquely downward.

[0047] The L-shaped transfer housing 23 is provided with an L-shaped channel 230; the L-shaped channel 230 can change the flow direction of the cleaning liquid on the arc surface 17; the L-shaped channel 230 is provided with an upper inclined part 231 and a lower inclined part 232, the upper inclined part 231 is inclined upward and the lower inclined part 232 is inclined downward; since the upper inclined part 231 is close to the arc surface 17, when the cleaning liquid flows downward along the arc surface 17, the cleaning liquid will enter the upper inclined part 231 and transfer to the lower inclined part 232; the lower inclined part 232 can guide the cleaning liquid to be output from the arc surface 17, so that the cleaning liquid continues to flow through the lower half of the path of the arc surface 17. The L-shaped transfer shell 23 is mainly set on both sides of the outer shell body 1, which is the furthest from the center and is located at the arc surface 17. The L-shaped transfer shell 23 can also be set between the sides and the bottom of the outer shell body 1, which can effectively guide the flow direction of the cleaning liquid, so that the cleaning liquid can more thoroughly rinse the arc surface 17. The L-shaped transfer shell 23 can prevent the cleaning liquid from falling directly into the air when it flows through the two sides of the outer shell body 1, further increasing the cleaning area and improving the cleaning effect.

[0048] Optimally, the outer surface of the L-shaped transfer shell 23 is provided with a streamlined structure 233.

[0049] In addition to its water-guiding function, the L-shaped transfer shell 23 of this design also features a streamlined structure 233. This is equivalent to adding a streamlined structure 233 to the outside of the main body 1. The outer surface of the streamlined structure 233 can effectively reduce airflow separation, avoid violent vibration, and better disperse impact force, thereby improving the stability of the main body 1.

[0050] Alternatively, the outer surface of the outer shell body 1 may be coated with a self-cleaning coating.

[0051] Self-cleaning coatings are commercially available. They achieve surface anti-fouling and easy-cleaning functions through hydrophobic or hydrophilic physical properties, and are mainly divided into two categories: superhydrophobic and superhydrophilic. Superhydrophobic coatings utilize the formation of a lotus leaf-like superhydrophobic surface; superhydrophilic coatings rely on materials such as nano-titanium dioxide to achieve self-cleaning through photocatalytic decomposition of pollutants. Therefore, when pollutants fall onto the outer inclined surface 12 or the arc surface 17, rinsing the outer inclined surface 12 or the arc surface 17 with a cleaning liquid is more effective and requires less water.

[0052] Alternatively, the outer inclined surface 12 may be provided with retaining edges 16 on both sides.

[0053] The guard 16 protrudes from the surface of the outer slope 12. For example, the height of the guard 16 protruding is 1-3cm. This can prevent the cleaning liquid on the outer slope 12 from being directly transferred to the arc surface 17 under the action of wind resistance, thereby improving the uniformity of the cleaning liquid application.

[0054] Alternatively, the cleaning assembly 2 may further include a water tank 24;

[0055] The water tank 24 is installed on the windproof shell 21, and the side of the water tank 24 is provided with a tank opening 241 facing the shell opening 211; the input end of the drainage channel 14 is connected to the interior of the water tank 24; the output end of the water supply pipe 22 is used to output cleaning liquid to the water tank 24; the water tank 24 is used to store part of the cleaning liquid and output the cleaning liquid to the shell opening 211 and the drainage channel 14.

[0056] In this embodiment, the water tank 24 is used to temporarily store cleaning liquid, allowing the liquid to be filled to a certain volume before being discharged, thus preventing the cleaning liquid output from the baffle shell 21 from being too dispersed. The tank opening 241 is located on the side of the water tank 24. When the liquid level in the water tank 24 reaches the tank opening 241, it will be discharged. The cleaning liquid will be output according to the size of the tank opening 241, and the cleaning liquid can be output in a parabolic manner to the shell opening 211, so that the width of the output cleaning liquid can cover the outer inclined surface 12. In addition, the cleaning liquid in the water tank 24 can also be output to the drain channel 14. When the water tank 24 stores a certain amount of cleaning liquid, the drain channel 14 can receive more cleaning liquid at the same time, so that the cleaning liquid can be output simultaneously through multiple side holes 15 onto the arc surface 17, making the cleaning more comprehensive and improving the cleaning effect.

[0057] Alternatively, the cleaning assembly 2 may further include: a water outlet pipe 25 and a solenoid valve 26;

[0058] The inlet end of the outlet pipe 25 is connected to the bottom of the water tank 24, and the outlet end of the outlet pipe 25 is connected to the drainage channel 14; the solenoid valve 26 is installed on the outlet pipe 25.

[0059] The water outlet pipe 25 connects the water tank 24 to the drainage channel 14. The water tank 24 can be pre-filled with cleaning liquid through the water supply pipe 22. When cleaning of the outer shell 1 is required, cleaning liquid can be continuously injected into the water tank 24. The cleaning liquid is output through the tank opening 241 to the outer inclined surface 12, thereby cleaning the upper surface of the outer shell 1 and removing contaminants from the upper surface of the outer shell 1. When cleaning of the arc surface 17 is required, the solenoid valve 26 can be opened by system control. The water tank 24 outputs cleaning liquid through the water outlet pipe 25 to the drainage channel 14. The drainage channel 14 outputs cleaning liquid through the side hole 15 to the arc surface 17, thereby removing contaminants from the arc surface 17. In this way, different areas of the outer shell 1 can be cleaned independently.

[0060] A self-cleaning offshore wind turbine is provided with the casing of the aforementioned self-cleaning wind turbine generator set.

[0061] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A wind turbine generator housing with self-cleaning, characterized in that, include: Main body and cleaning components; The upper surface of the outer shell body is provided with a top surface and an inclined outer surface from high to low along the length direction; The cleaning assembly is mounted on the top surface; the side and bottom surfaces of the outer casing are transitioned by an arc surface; The cleaning assembly includes: a windshield, a water supply pipe, an L-shaped transfer shell, and a water tank; The windproof shell is installed on the top surface; the windproof shell has an opening on its lower side, which faces and connects to the outer inclined surface; the water supply pipe is installed on the outer shell body, and the output end of the water supply pipe is connected to the windproof shell for outputting cleaning liquid to the windproof shell, so that the cleaning liquid flows through the windproof shell and is output to the outer inclined surface and the arc surface; The outer shell body is equipped with a water-guiding top cover; The upper surface of the water guide cover is provided with an upper top surface and an outer inclined surface; the interior of the water guide cover is provided with a drainage channel along the length direction; the input end of the drainage channel is connected to the windproof shell; the two sides of the water guide cover are provided with a plurality of side holes arranged in sequence along the length direction, the side holes facing the arc surface, and the side holes are connected to the output end of the drainage channel; In the plurality of side holes arranged in a row, the diameter of the side holes decreases in the direction away from the windshield. Multiple L-shaped transfer shells are horizontally extended on the arc surface; the interior of each L-shaped transfer shell is provided with an L-shaped channel; the L-shaped channel is provided with an upper oblique part and a lower oblique part, the lower end of the upper oblique part is connected to the upper end of the lower oblique part; the upper end of the upper oblique part faces the arc surface obliquely upward, and the lower end of the lower oblique part faces the arc surface obliquely downward; The water tank is installed on the windproof shell, and the side of the water tank has a tank opening facing the shell opening; the input end of the drainage channel is connected to the interior of the water tank; the output end of the water supply pipe is used to output cleaning liquid to the water tank; the water tank is used to store a portion of the cleaning liquid and output the cleaning liquid to the shell opening and the drainage channel.

2. A wind turbine generator housing with self-cleaning according to claim 1, characterized in that, The outer surface of the L-shaped transfer shell has a streamlined structure.

3. A wind turbine generator housing with self-cleaning according to claim 1, characterized in that, The outer surface of the main body of the outer shell is coated with a self-cleaning coating.

4. A wind turbine generator housing with self-cleaning according to claim 1, characterized in that, The outer inclined surface has retaining edges on both sides.

5. A wind turbine generator housing with self-cleaning according to any one of claims 1-4, characterized in that, The cleaning assembly also includes: a water outlet pipe and a solenoid valve; The inlet end of the water outlet pipe is connected to the bottom of the water tank, and the outlet end of the water outlet pipe is connected to the drainage channel; the solenoid valve is installed on the water outlet pipe.

6. An offshore wind turbine, characterized in that, The wind turbine housing is provided with any one of claims 1-5 and features self-cleaning technology.

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