Wind turbine blade capable of removing ice

Abstract

The present invention relates to the technical field of wind turbines, and in particular to a wind turbine blade capable of removing ice, comprising: a wind turbine assembly, comprising a tower, a nacelle provided on the tower and a hub provided on a nacelle output end; blade assemblies circumferentially arrayed outside the hub and comprising outer housings; and de-icing assemblies, each comprising a de-icing frame movably arranged on the outer wall of an outer housing, a passing frame integrally formed outside the de-icing frame, and stay ropes arranged in the passing frame and used for scraping off condensed frost and condensed water from the surface of the outer housing. In the wind turbine blade provided by the present invention, condensed water or frost that may be formed on the surfaces of the wind turbine blades can be scraped off by the de-icing assemblies and, if a thick ice layer is formed, ice can be broken by striking so as to ensure the working efficiency of the blades as much as possible, thus effectively solving existing problems in the prior art.

Description

A type of de-icing blade for wind turbines Technical Field

[0001] This invention relates to the field of wind turbine technology, and in particular to a de-icing blade for wind turbines. Background Technology

[0002] Wind turbines are essential equipment for generating electricity using natural wind energy, and one of their core components is the blade. Currently, most wind turbine blades are made of aluminum alloy or steel. While these materials perform well in terms of strength and durability, they may face challenges under certain environmental conditions, such as cold and humid climates.

[0003] When wind turbine blades are exposed to cold, damp environments, condensation or frost may form on their surfaces. This phenomenon occurs because water vapor in the air condenses on the blade surface at low temperatures. These condensed droplets or frost not only alter the surface properties of the blades but can also significantly affect their contact area with the wind. Specifically, the presence of condensation or frost reduces the contact area between the blades and the air, thereby decreasing the blades' rotational efficiency under wind loads.

[0004] Furthermore, condensation or frost adhering to the blade surface increases its weight, further affecting its rotational flexibility and speed. This increased weight not only makes blade rotation more strenuous but can also place additional strain on the overall structure and mechanical components of the wind turbine. Therefore, in cold and humid environments, the power generation efficiency of wind turbines can be significantly affected, limiting their application in these regions and posing challenges to the reliability and economic viability of wind power generation.

[0005] To address this issue, we propose a de-icing blade for wind turbines. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a de-icing blade for a wind turbine, comprising: a wind turbine assembly including a beam frame, a chassis mounted on the beam frame, and a hub mounted on the output end of the chassis; and a blade assembly circumferentially arranged outside the hub, including an outer shell; and a de-icing assembly including a de-icing frame movably mounted on the outer wall of the outer shell, a pass frame integrally formed outside the de-icing frame, and a pull rope disposed within the pass frame for scraping away condensed frost and condensate on the surface of the outer shell.

[0008] As a preferred embodiment of the de-icing blade for wind turbines according to the present invention, the inner cavity of the outer shell is provided with a movable channel, and the outer wall of the outer shell is provided with a connecting through hole communicating with the movable channel.

[0009] As a preferred embodiment of the de-icing blade for wind turbines according to the present invention, a sealing member is provided in the movable channel, and the sealing member includes a movable block that can be vertically displaced in the movable channel, the movable block extending to the outside of the outer shell through the connecting through hole.

[0010] As a preferred embodiment of the de-icing blade for wind turbines according to the present invention, a support platform is provided on the outer wall of the frame, a support rod is hinged to the outer wall of the support platform, and an ice-breaking wheel is provided at one end of the support rod. When the movable block protrudes from the outer shell, the ice-breaking wheel will be lifted by the movable block and strike the outer shell.

[0011] As a preferred embodiment of the de-icing blade for wind turbines described in this invention, the outer wall of the support platform is provided with an elastic element, and one end of the support rod is also provided with a pressure handle, and the pressure handle is in contact with the elastic element.

[0012] As a preferred embodiment of the de-icing blade for wind turbines according to the present invention, a transmission rod is movably disposed within the outer casing, and a connecting groove is provided on the outer wall of the transmission rod. A transmission plate is hinged within the connecting groove, and the transmission plate is rotatably connected to the movable block at the end away from the transmission rod.

[0013] As a preferred embodiment of the de-icing blade for wind turbines described in this invention, the outer wall of the movable block is integrally formed with a buffer groove, and the two sides of the movable block are also provided with support sliders that restrict its displacement to the vertical direction only.

[0014] As a preferred embodiment of the de-icing blade for the wind turbine of the present invention, wherein: the inner cavity of the outer shell is provided with an electric push rod, and the output end of the electric push rod is connected to the transmission rod.

[0015] As a preferred embodiment of the de-icing blade for wind turbines according to the present invention, the outer wall of the outer casing is provided with a connecting groove, and the inner wall of the de-icing frame is provided with a connecting slider that slides in conjunction with the connecting groove.

[0016] As a preferred embodiment of the de-icing blade for the wind turbine of the present invention, wherein: a motor is provided on the outer wall of the outer casing, and a tightening shaft is provided at the output end of the motor; a cable is wound around the outer wall of the tightening shaft; and a pull shaft for connecting the cable is provided on the outer wall of the de-icing frame.

[0017] The beneficial effects of the present invention are as follows: When condensation or frost may form on the surface of the blades of wind turbines provided by the present invention, the de-icing component can be used to scrape it off. If a thick ice layer is formed, it can be broken by knocking, so as to ensure the working efficiency of the blades as much as possible and effectively solve the problems existing in the prior art. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 is a schematic diagram of the blade assembly structure in this invention.

[0021] Figure 3 is a schematic diagram of the connection between the outer shell and the de-icing frame structure in this invention.

[0022] Figure 4 is a schematic diagram of the sealing component structure in this invention.

[0023] Figure 5 is a schematic diagram of one of the structures of the de-icing component in this invention.

[0024] Figure 6 is another schematic diagram of the de-icing component structure in this invention.

[0025] In the diagram: 100, Wind turbine; 101, Beam frame; 102, Chassis; 103, Hub; 200, Blade assembly; 201, Outer shell; 201a, Moving channel; 201a-1, Connecting through hole; 201b, Connecting slide; 202, Push rod; 202a, Connecting groove; 203, Sealing component; 203a, Moving block; 203a-1, Buffer groove; 203a-2, Support slider; 203b, Transmission plate; 300, De-icing assembly; 301, De-icing frame; 301a, Connecting slider; 301b, Pull shaft; 301b-1, Pull cable; 301b-2, Motor; 302, Pass-through frame; 302a, Pull rope; 303, Icebreaker wheel; 303a, Support rod; 303b, Pressure handle; 303b-1, Elastic component; 304, Support platform. Detailed Implementation

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1, referring to Figures 1 to 6, is the first embodiment of the present invention. This embodiment provides a de-icing blade for wind turbine units, which uses a pull rope 302a on the de-icing assembly 300 to scrape off frost or condensation adhering to the surface of the outer casing 201.

[0030] Specifically, the wind turbine assembly 100 includes a beam frame 101, a chassis 102 mounted on the beam frame 101, and a hub 103 mounted on the output end of the chassis 102; the blade assembly 200, which is circumferentially arranged outside the hub 103, includes an outer casing 201; wherein, the hub 103 drives the outer casing 201 to rotate, thereby realizing the power generation function, which is fully described in the prior art and will not be elaborated on here.

[0031] The de-icing assembly 300 includes a de-icing frame 301 movably mounted on the outer wall of the outer casing 201, a passage frame 302 integrally formed outside the de-icing frame 301, and a pull rope 302a disposed within the passage frame 302 for scraping away condensed ice and water on the surface of the outer casing 201. The pull rope 302a is capable of a certain degree of rebound.

[0032] In summary, when it is necessary to clean the frost or condensation on the outer surface of the outer casing 201, the movement of the de-icing component 300 is controlled, causing the de-icing frame 301 to shift on the outer surface of the outer casing 201, and the outer wall of the outer casing 201 is scraped by the pull rope 302a.

[0033] Example 2, referring to Figures 1 to 6, is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides a secondary removal method. This method is mainly used to prevent the outer shell 201 from freezing. When the pull rope 302a cannot scrape off the ice, it is broken by knocking to remove the ice.

[0034] Specifically, the inner cavity of the outer shell 201 is provided with a movable channel 201a, and the outer wall of the outer shell 201 is provided with a connecting through hole 201a-1 communicating with the movable channel 201a. The specific number of connecting through holes 201a-1 can be determined according to the actual length of the outer shell 201.

[0035] A sealing element 203 is provided within the active channel 201a, and the sealing element 203 includes a movable block 203a that can move vertically within the active channel 201a. The movable block 203a extends to the outside of the outer casing 201 through a connecting through hole 201a-1. Under normal circumstances, the movable block 203a is located within the connecting through hole 201a-1, forming a plane with the outer wall of the outer casing 201, so as not to affect the overall power generation efficiency of the blade as much as possible.

[0036] A support platform 304 is provided on the outer wall of the frame 302. A support rod 303a is hinged to the outer wall of the support platform 304, and one end of the support rod 303a is provided with an ice-breaking wheel 303. When the movable block 203a protrudes from the outer shell 201, the ice-breaking wheel 303 will be lifted by the movable block 203a and strike the outer shell 201. Under normal circumstances, the ice-breaking wheel 303 can contact the outer surface of the outer shell 201.

[0037] The outer wall of the support platform 304 is provided with an elastic element 303b-1, and one end of the support rod 303a is also provided with a pressure handle 303b, and the pressure handle 303b is in contact with the elastic element 303b-1. The elastic element 303b-1 is a compression spring.

[0038] In summary, when ice accumulates on the outer surface of the outer shell 201 and cannot be removed by the pull rope 302a described in Embodiment 1, the movable blocks 203a can be displaced and protrude from the outer shell 201. During this action of the movable blocks 203a protruding from the outer shell 201, the ice near the connecting through holes 201a-1 will be broken and fall off.

[0039] Furthermore, the de-icing frame 301 is then displaced on the surface of the outer shell 201 again. The through frame 302 on the de-icing frame 301 ensures that the displacement of the de-icing frame 301 is not affected by the protruding movable block 203a. During the movement of the de-icing frame 301, the ice-breaking wheel 303 will be affected by the protruding movable block 203a, intermittently squeezing the elastic element 303b-1. Supported by the pressure handle 303b and the support rod 303a, the ice-breaking wheel 303 will intermittently strike the outer shell 201, breaking and dropping any remaining ice that has not been completely removed, thus achieving the de-icing effect.

[0040] Example 3, referring to Figures 1 to 6, is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides supplementary explanations of the functions or components in the above embodiments.

[0041] Specifically, a transmission rod 202 is movably disposed within the outer casing 201, and a connecting groove 202a is formed on the outer wall of the transmission rod 202. A transmission plate 203b is hinged within the connecting groove 202a, and the end of the transmission plate 203b furthest from the transmission rod 202 is rotatably connected to the movable block 203a. The displacement of the transmission rod 202 is planar and must not deviate. Referring to Figure 2, the four corners of the transmission rod 202 ensure that its displacement occurs only within a single plane within the outer casing 201.

[0042] The outer wall of the movable block 203a is integrally formed with a buffer groove 203a-1, and the two sides of the movable block 203a are also provided with support sliders 203a-2 to restrict its displacement to the vertical direction only. The support sliders 203a-2 are used to cooperate with the inner wall of the movable channel 201a to support the displacement of the movable block 203a.

[0043] An electric actuator is installed inside the outer shell 201, and the output end of the electric actuator is connected to the transmission rod 202. The electric actuator provides power for the displacement of the transmission rod 202.

[0044] The outer wall of the outer casing 201 is provided with a connecting groove 201b, and the inner wall of the de-icing frame 301 is provided with a connecting slider 301a that slides in conjunction with the connecting groove 201b. The sliding contact between the connecting groove 201b and the connecting slider 301a is used to provide the movement stroke of the de-icing frame 301.

[0045] A motor 301b-2 is installed on the outer wall of the outer casing 201, and a tightening shaft is provided at the output end of the motor 301b-2. A pull cable 301b-1 is wound around the outer wall of the tightening shaft, and a pull shaft 301b for connecting the pull cable 301b-1 is provided on the outer wall of the de-icing frame 301. When the motor 301b-2 controls the collecting shaft, the pull cable 301b-1 cannot be extended, that is, the de-icing frame 301 cannot move. When the de-icing frame 301 needs to move, the motor 301b-2 does not participate. When the outer casing 201 moves, it will throw the de-icing frame 301 out, thereby completing the action in the above embodiment.

[0046] In summary, the movement of each movable block 203a is synchronized. When the movable block 203a needs to move, the electric push rod is activated to drive the transmission rod 202 to move. The transmission rod 202 will cause the movable block 203a to move within its predetermined stroke through the transmission plate 203b, thus completing the above work.

[0047] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0049] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A de-icing blade for a wind turbine, characterized in that: include, A wind turbine assembly (100) includes a beam frame (101), a chassis (102) mounted on the beam frame (101), and a hub (103) mounted on the output end of the chassis (102); and, The blade assembly (200) arranged circumferentially outside the hub (103) includes a housing (201); and, The de-icing assembly (300) includes a de-icing frame (301) movably disposed on the outer wall of the outer shell (201), a passage frame (302) integrally formed outside the de-icing frame (301), and a pull rope (302a) disposed in the passage frame (302) for scraping off condensed frost and condensed water on the surface of the outer shell (201).

2. The de-icing blade for wind turbines as described in claim 1, characterized in that: The inner cavity of the outer shell (201) is provided with a movable channel (201a), and the outer wall of the outer shell (201) is provided with a connecting through hole (201a-1) that communicates with the movable channel (201a).

3. The de-icing blade for wind turbines as described in claim 2, characterized in that: A sealing element (203) is provided in the active channel (201a), and the sealing element (203) includes an active block (203a) that makes vertical displacement in the active channel (201a), and the active block (203a) extends to the outside of the outer shell (201) through the connecting through hole (201a-1).

4. The de-icing blade for wind turbines as described in claim 3, characterized in that: A support platform (304) is provided on the outer wall of the frame (302). A support rod (303a) is hinged to the outer wall of the support platform (304), and an ice-breaking wheel (303) is provided at one end of the support rod (303a). When the movable block (203a) protrudes from the outer shell (201), the ice-breaking wheel (303) will be lifted by the movable block (203a) and strike the outer shell (201).

5. The de-icing blade for a wind turbine as described in claim 4, characterized in that: The outer wall of the support platform (304) is provided with an elastic element (303b-1), and one end of the support rod (303a) is also provided with a pressure handle (303b), and the pressure handle (303b) is in contact with the elastic element (303b-1).

6. The de-icing blade for wind turbines as described in claim 3, characterized in that: A transmission rod (202) is movably disposed inside the outer shell (201), and a connecting groove (202a) is provided on the outer wall of the transmission rod (202). A transmission plate (203b) is hinged in the connecting groove (202a), and the transmission plate (203b) is rotatably connected to the movable block (203a) at the end away from the transmission rod (202).

7. The de-icing blade for a wind turbine as described in claim 3, 4, or 6, characterized in that: The outer wall of the movable block (203a) is integrally formed with a buffer groove (203a-1), and the two sides of the movable block (203a) are also provided with support sliders (203a-2) to restrict its displacement to only the vertical direction.

8. The de-icing blade for a wind turbine as described in claim 6, characterized in that: The inner cavity of the outer shell (201) is provided with an electric push rod, and the output end of the electric push rod is connected to the transmission rod (202).

9. The de-icing blade for a wind turbine as described in claim 8, characterized in that: The outer wall of the outer shell (201) is provided with a connecting groove (201b), and the inner wall of the de-icing frame (301) is provided with a connecting slider (301a) that slides with the connecting groove (201b).

10. The de-icing blade for a wind turbine as described in claim 9, characterized in that: The outer wall of the outer casing (201) is provided with a motor (301b-2), and the output end of the motor (301b-2) is provided with a tightening shaft. The outer wall of the tightening shaft is wound with a cable (301b-1), and the outer wall of the de-icing frame (301) is provided with a pull shaft (301b) for connecting the cable (301b-1).

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