Electric heating deicing covering film, device, blade and wind generating set

Abstract

The utility model relates to an electric heating deicing covering film, a device, a blade and a wind generating set. The electric heating deicing covering film comprises an integrally-formed covering film body. The integrally-formed covering film body comprises a left covering film, a middle covering film and a right covering film; the thickness of the middle covering film is smaller than that of the left covering film and the right covering film. The optimized design seems simple, but the whole film covering body is integrally formed, standardized production and installation are easy, and the overall cost of the wind generating set is reduced; and the protection thickness at the mold closing seam is reserved, so that the front edge of the laminated blade can be effectively coated with front edge protection paint or manually pasted with a front edge protection composite material, the deicing protection effect can be integrally improved, and meanwhile, the influence on the blade after electric heating deicing and laminating of the blade is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of wind power generation, in particular to an electric heating deicing film, a device, a blade and a wind power generator set. Background Art

[0002] At present, my country's wind power grid-connected installed capacity has exceeded 389 million kilowatts, which is one of my country's main energy sources. Most of them are megawatt-class large wind turbines. The linear speed of the large wind turbine blades is high, and the outer surface of the blade tip constantly collides with raindrops in the air, which is very easy to be damaged. Especially in the southern region, where annual precipitation is sufficient and the raindrop diameter is large, the outer surface of the blade tip is more seriously damaged than in the north. The outer surface damage of the blade tip will cause the wind turbine to reduce its operating power, and even cause the blade to crack or break, endangering the safety of the unit.

[0003] In the prior art, the outer surface of the blade tip is generally protected by installing a protective cloth or applying protective paint. Figure 1 As shown in the figure, separate double-sided covering films A are arranged on both sides of the blade, and a gap is reserved at the joint seam of the leading edge of the blade; then, although the blade has been modified for electric heating deicing, during the operation of the wind turbine generator set, the high-speed friction between the blade and the air is easy to cause wind erosion near the joint seam of the leading edge of the blade. In order to better protect the electric heating blade and the electric heating deicing film, especially the leading edge of the film, it is necessary to scrape or apply multiple layers of protective materials at the reserved gap, such as Figure 2 The protective cloth shown or the leading edge protective paint B. Although the cost is low, it has high requirements for the on-site construction process and the blade surface treatment process. Inadequate quality control can easily bring negative effects. In the mildest case, the appearance color difference and the blade surface are easy to be dirty. In severe cases, it may cause changes in the aerodynamic shape, affecting the normal power generation of the wind turbine. In addition, the protection effect is poor, and surface quality problems are prone to occur, which brings unnecessary impacts to the operation of the wind turbine. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an electric heating deicing coating, comprising: an integrally formed coating body;

[0005] The integrally formed covering body comprises: a left covering, a middle covering and a right covering; the thickness of the middle covering is smaller than that of the left covering and also smaller than that of the right covering.

[0006] Furthermore, the left covering film, the middle covering film and the right covering film are flange structures.

[0007] Furthermore, the coating body is made of flexible material.

[0008] Furthermore, the thickness of the left covering film is the same as that of the right covering film.

[0009] Furthermore, the thickness of the left coating and the right coating is 1.5-2.5 mm.

[0010] Furthermore, the thickness of the middle coating is 0.5-1.5 mm.

[0011] On the other hand, the utility model also provides an electric thermal deicing device, including an electric thermal deicing film and a heating module connected to the electric thermal deicing film;

[0012] The electrothermal deicing film is any of the above-mentioned electrothermal deicing films.

[0013] On the other hand, the utility model also provides a blade of a wind turbine generator set, comprising: a blade body, an electric heating deicing film arranged at the tip of the blade body, a heating module connected to the electric heating deicing film, and a protective layer;

[0014] The electric thermal deicing film is any of the above electric thermal deicing films, and the middle film is centrally located at the tip of the blade body; the protective layer is arranged on the middle film.

[0015] Furthermore, the protective layer is a protective cloth or a protective paint.

[0016] On the other hand, the utility model also provides a wind turbine generator set, comprising any of the above blades.

[0017] The utility model relates to an electric thermal deicing coating, a device, a blade and a wind turbine generator set. The optimized design seems simple, but the entire coating body is formed in one piece, which is not only easy to standardize production and installation, but also reduces the overall cost of the wind turbine generator set; and a protective thickness at the mold seam is reserved, which can effectively achieve the leading edge of the blade after coating and then coating the leading edge with leading edge protective paint or hand-laying the leading edge protective composite material, which can improve the overall deicing protection effect and effectively improve the impact of the blade after the electric thermal deicing coating on the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment of a blade after being coated with an electric heating deicing film in the prior art;

[0019] Figure 2 It is a structural schematic diagram of an embodiment of a blade having an additional protective layer after being coated with an electric heating deicing film in the prior art;

[0020] Figure 3 It is a structural schematic diagram of an embodiment of a blade after being coated with the electric heating deicing film of the utility model;

[0021] Figure 4 The present invention is a schematic structural diagram of an embodiment of a blade having a protective layer added after the electric heating deicing film of the present invention is applied. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should be noted that if the embodiments of the present utility model involve directional indications, such as up, down, left, right, front, back, etc., then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly. In addition, if the embodiments of the present utility model involve descriptions such as "first, second", "S1, S2", "step one, step two", etc., then such descriptions are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of indicated technical features or indicating the execution order of the method, etc. Those skilled in the art can understand that everything that does not violate the key points of the utility model under the technical concept of the utility model should be included in the protection scope of the utility model.

[0024] like Figure 3 As shown, the utility model provides an electric heating deicing film, including an integrally formed film body 10;

[0025] The integrally formed covering body 10 comprises: a left covering 11 , a middle covering 12 and a right covering 13 ; the thickness of the middle covering 12 is smaller than that of the left covering 11 and also smaller than that of the right covering 12 .

[0026] In this embodiment, an electric deicing film of the utility model is provided, which can be used for electric deicing of wind turbine blades as a protective film. For example, when the blades need to be coated for deicing or other requirements, the optimized coating structure of the utility model is used, the middle part (middle coating 12) is made thinner, that is, the thickness of the film and the front edge of the blade is made thinner, and the rest of the parts (left coating 11 and right coating 13) that are in contact with the blade are made thicker, such as Figure 3 As shown, space is reserved for the subsequent application of protective paint, composite materials, etc. Although the optimized design seems simple, the entire coating body is formed in one piece, which is not only easy to standardize production and installation, but also only one heating module can be set up later, reducing the overall cost of the wind turbine generator set; and the protection thickness at the mold joint is reserved, which can effectively realize the application of leading edge protection paint or hand-paste leading edge protection composite materials on the leading edge of the blade after coating, which can improve the overall deicing protection effect and effectively improve the impact of the blade electric heating deicing coating on the blade.

[0027] Preferably, Figure 3 As shown, the left film 11, the middle film 12 and the right film 13 are flange structures; more preferably, the film body is made of flexible material. The flange design of the flexible material allows it to be applied to the blade surface in an arc shape according to the blade structure to fit tightly.

[0028] More preferably, the thickness of the left coating 11 and the right coating 13 are the same to maintain the same deicing effect on both sides of the blade. More preferably, the thickness of the left coating 11 and the right coating 13 is 1.5-2.5 mm. More preferably, the thickness of the middle coating 12 is 0.5-1.5 mm.

[0029] On the other hand, the utility model also provides an electric deicing device, comprising any of the above-mentioned electric deicing films 10, and a heating module connected to the electric deicing film. The heating module can be, but is not limited to, a piece of carbon fiber cloth that can generate heat when powered and is arranged on the inner side of the mold. Preferably, the number of heating modules is one, or an even number of heating modules on both sides, and the specific number can be arbitrarily determined according to the number of layers of the film.

[0030] On the other hand, the utility model also provides a blade of a wind turbine generator set, such as Figure 3 As shown, it includes: a blade body 20, an electric thermal deicing film 10 arranged at the tip of the blade body 20, a heating module connected to the electric thermal deicing film and a protective layer 30;

[0031] The electric thermal deicing film is any of the above-mentioned electric thermal deicing films 10 , and the middle film 12 is centrally located at the tip of the blade body 30 ; the protective layer 30 is arranged on the middle film 12 .

[0032] In this embodiment, a blade of a wind turbine generator set of the utility model is provided, such as Figure 4 As shown, after the electric deicing film 10 is applied and set, a protective layer is applied to the reserved space area on the middle film 12. Due to the deviation of the film thickness, the thickness added at the front edge mold seam after the film is applied is thinner, and the construction process is good. Space is reserved for the protective layer. The reserved grooves can provide positioning and shaping guarantees for the hand-layup construction of the protective paint or protective cloth. The operator can rely on the grooves to greatly improve the surface quality of the hand-layup of the blades, which is both beautiful and can improve the protection quality of the blades.

[0033] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An electrothermal deicing coating, characterized in that: include: One-piece film-coated body; The integrally formed covering body comprises: a left covering, a middle covering and a right covering; The thickness of the middle film is smaller than that of the left film and also smaller than that of the right film.

2. The electrothermal deicing coating according to claim 1, characterized in that: The left covering film, the middle covering film and the right covering film are flange structures.

3. The electrothermal deicing coating according to claim 1, characterized in that: The membrane body is made of flexible material.

4. The electrothermal deicing coating according to claim 1, characterized in that: The thickness of the left and right films is the same.

5. The electrothermal deicing coating according to claim 1, characterized in that: The thickness of the left and right films is 1.5-2.5 mm.

6. The electrothermal deicing coating according to any one of claims 1 to 5, characterized in that: The thickness of the middle film is 0.5-1.5mm.

7. An electric heating deicing device, characterized in that: It includes an electric heating deicing film and a heating module connected to the electric heating deicing film; The electrothermal deicing film is the electrothermal deicing film according to any one of claims 1 to 6.

8. A blade of a wind turbine generator set, characterized in that: include: A blade body, an electric heating deicing film arranged at the tip of the blade body, a heating module connected to the electric heating deicing film, and a protective layer; The electrothermal deicing film is the electrothermal deicing film as described in any one of claims 1 to 6, and the middle film is centrally located at the tip of the blade body; the protective layer is arranged on the middle film.

9. The blade of a wind turbine generator set according to claim 8, characterized in that: The protective layer is a protective cloth or protective paint.

10. A wind turbine generator set, characterized in that: The invention comprises a blade as described in any one of claims 8 to 9.

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