Wind power blade trailing edge cushion block, wind power blade and wind generating set

Abstract

The utility model relates to the technical field of wind power equipment, and provides a wind power blade trailing edge cushion block, a wind power blade and a wind generating set, the trailing edge cushion block comprises a plurality of spliced cushion block units, each cushion block unit comprises a plurality of cushion block substrates which are sequentially stacked, and the cushion block substrates of the adjacent cushion block units are connected through connecting pieces. The wind power blade trailing edge cushion block provided by the utility model is formed by splicing the plurality of cushion block units, each cushion block unit is divided into the plurality of cushion block substrates, and the single cushion block substrate is processed, so that the size processing precision can be ensured by the single cushion block substrate with smaller size; therefore, the whole cushion block formed by connecting all the cushion block substrates can keep a good profile, the matching performance of the cushion block and the skin is improved, and the problem that the matching performance of an existing cushion block and the skin is poor is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power equipment, in particular to a wind power blade trailing edge pad, a wind power blade and a wind power generator set. Background Art

[0002] As blades become larger, their size and length increase, and the size of the blade trailing edge pad also increases, especially for blunt trailing edge blades. As an important component of the blade, the dimensional accuracy of the pad and its conformity with the skin layer are increasingly important for the structural performance and safety of the blade.

[0003] In the related art, the size design of the pad is simulated by trailing edge interference, a pad model is formed after fitting, and the pad is obtained after processing. However, the pad processed by the pad model has poor matching with the skin. Utility Model Content

[0004] The utility model provides a wind turbine blade trailing edge pad, a wind turbine blade and a wind turbine generator set, which are used to solve the defect of poor matching between the pad and the skin in the prior art.

[0005] The utility model provides a wind turbine blade trailing edge pad, comprising a plurality of spliced ​​pad units, each pad unit comprising a plurality of pad substrates stacked in sequence, and the pad substrates of adjacent pad units are connected via a connecting piece.

[0006] According to a wind turbine blade trailing edge pad provided by the utility model, all pad substrates of each pad unit are connected via the connecting piece.

[0007] According to a wind turbine blade trailing edge pad provided by the utility model, the connecting piece includes mesh cloth or mesh felt or adhesive.

[0008] According to a wind turbine blade trailing edge pad provided by the utility model, a plurality of pad substrates are stacked along a first direction, the thickness of the pad substrate is 40 cm to 60 cm, and the first direction is the axial direction of the wind turbine blade.

[0009] According to a wind turbine blade trailing edge pad provided by the utility model, a plurality of pad substrates are stacked along a second direction, the thickness of the pad substrate is 20 cm to 40 cm, and the second direction is a direction perpendicular to the first direction.

[0010] According to a wind turbine blade trailing edge pad provided by the utility model, a plurality of connecting members are arranged between pad substrates of adjacent pad units, and the plurality of connecting members are arranged at equal intervals.

[0011] According to a wind turbine blade trailing edge pad provided by the utility model, a plurality of pad units are spliced ​​end to end in sequence.

[0012] According to a wind turbine blade trailing edge pad provided by the utility model, a positioning component is provided between adjacent pad substrates.

[0013] The utility model also provides a wind turbine blade, comprising an outer shell and any one of the above-mentioned wind turbine blade trailing edge pads, wherein the outer shell covers at least a portion of the outer side of the pad unit.

[0014] The utility model also provides a wind turbine generator set, comprising any one of the wind turbine blades described above.

[0015] The wind turbine blade trailing edge pad provided by the utility model is formed by splicing a plurality of pad units, each of which is divided into a plurality of pad substrates. By processing a single pad substrate, the size processing accuracy of a single pad substrate with a smaller size can be ensured, so that the overall pad formed after all the pad substrates are connected can maintain a good profile, thereby improving the matching of the pad and the skin.

[0016] Furthermore, the wind turbine blade and the wind turbine generator set provided by the present invention, because they are provided with the wind turbine blade trailing edge pad as described above, also have various advantages of the wind turbine blade trailing edge pad as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of the cushion block unit provided by the utility model;

[0019] Figure 2 This is the second structural schematic diagram of the cushion block unit provided by the utility model;

[0020] Figure 3 It is a schematic diagram of the matching structure of the cushion block unit and the outer shell provided by the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the wind turbine blade provided by the utility model;

[0022] Figure 5 It is a structural schematic diagram of the blade body provided by the utility model;

[0023] Reference numerals:

[0024] 100, trailing edge pad; 200, outer shell; 210, first skin layer; 220, second skin layer; 230, blade shape body;

[0025] 110, a spacer unit; 111, a spacer substrate;

[0026] 120. Connectors. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] Combine the following Figures 1 to 4 The utility model describes a wind turbine blade trailing edge pad.

[0029] The embodiment of the first aspect of the utility model provides a wind turbine blade trailing edge pad, such as Figure 1 and Figure 2 As shown, the wind turbine blade trailing edge pad includes a plurality of spliced ​​pad units 110 , each pad unit 110 includes a plurality of pad substrates 111 stacked in sequence, and the pad substrates 111 of adjacent pad units 110 are connected via a connector 120 .

[0030] It can be understood that a plurality of pad substrates 111 are stacked in sequence to form a pad unit 110, and a plurality of pad units 110 are spliced ​​to form a wind turbine blade trailing edge pad. Then, a single pad substrate 111 is used as a processing element. Compared with the entire trailing edge pad, a single pad substrate 111 with a smaller size can ensure dimensional processing accuracy, thereby improving the dimensional accuracy of the wind turbine blade trailing edge pad formed after all the pad substrates 111 are connected.

[0031] The wind turbine blade trailing edge pad provided by the utility model is formed by splicing a plurality of pad units 110, each pad unit 110 is divided into a plurality of pad substrates 111, and by processing a single pad substrate 111, a single pad substrate 111 with a smaller size can ensure the dimensional processing accuracy, so that the overall pad formed after all the pad substrates 111 are connected can maintain a good shape, thereby improving the matching of the pad and the skin.

[0032] It should be noted that in the related art, the matching of the pad and the skin is poor, and the pad needs to be tried on site, measured and gradually adjusted to optimize the pad size on site, resulting in low connection efficiency between the pad and the skin. The wind turbine blade trailing edge pad provided by the utility model improves the dimensional accuracy through a single pad substrate 111, thereby ensuring that the overall pad has a good profile, so as to achieve a higher matching between the pad and the skin, avoid optimizing the pad size, and thus improve the connection efficiency between the pad and the skin.

[0033] According to an embodiment of the utility model, a single gasket substrate 111 corresponding to a plurality of gasket units 110 can be used as a single cross-sectional layer of the gasket. For example, the gasket substrates 111 arranged in the first layer of a plurality of gasket units 110 are spliced ​​to form a single cross-sectional layer. The gasket unit 110 includes a plurality of gasket substrates 111, and the plurality of gasket substrates 111 can form a plurality of single cross-sectional layers.

[0034] It can be understood that the trailing edge pad of the wind turbine blade in this embodiment is a multi-layer structure with multiple single-section layers, each layer has multiple regions, each region serves as a pad substrate 111, and each identical region of the multiple layers serves as a pad unit 110, thereby facilitating the splicing of multiple pad units 110.

[0035] In one embodiment of the present invention, all the spacer substrates 111 of each spacer unit 110 are connected via a connecting member 120 .

[0036] For example, in each gasket unit 110, a connector 120 is provided on the outer side surface of all the gasket substrates 111 to achieve connection of all the gasket substrates 111 of the gasket unit 110; the connector 120 is provided on the outer side surface where the gasket substrate 111 is connected to the adjacent gasket unit 110, so that the connector 120 not only connects all the gasket substrates 111 of the gasket unit 110, but also connects the adjacent gasket units 110.

[0037] Optionally, the connecting member 120 can be but is not limited to mesh cloth, mesh felt and adhesive; preferably, the connecting member 120 uses strip-shaped mesh cloth (or mesh felt), the length of the mesh cloth is compatible with the stacked length of all the pad substrates 111 of the pad unit 110, and the width of the mesh cloth can be reasonably designed according to the size of the pad substrate 111.

[0038] In one embodiment of the present invention, Figure 1 and Figure 3 As shown, a plurality of spacer substrates 111 are stacked along a first direction, and the first direction is the axial direction of the wind turbine blade.

[0039] It can be understood that multiple pad substrates 111 are stacked along the axial direction of the wind turbine blade, and the axial cutting design is performed according to the target pad, and in order to further reduce the size after cutting, the cut single-section layer is designed to be divided into blocks, thereby obtaining multiple pad substrates 111 corresponding to multiple pad units 110. After all the pad substrates 111 are processed, the multiple pad substrates 111 corresponding to the same block area are stacked in sequence and connected and fixed by the connecting piece 120 to obtain a pad unit 110. In this way, the remaining multiple pad substrates 111 corresponding to the same block area are stacked in sequence and connected by the connecting piece 120 to obtain the corresponding multiple pad units 110 in sequence. The multiple pad units 110 are spliced ​​along the blocking direction to obtain the entire trailing edge pad 100.

[0040] It should be noted that when the trailing edge pad 100 is assembled on the outer shell 200 of the wind turbine blade, the axial direction of the wind turbine blade can be considered as the length direction of the target pad, and the first direction can be the axial direction of the wind turbine blade. The target pad is cut along the axial direction of the wind turbine blade, and multiple pad substrates 111 are stacked in sequence along the axial direction of the wind turbine blade.

[0041] Optionally, when the pad substrates 111 in the pad unit 110 are stacked in sequence along the axial direction of the wind turbine blade, the thickness L1 of each pad substrate 111 may be 40 cm to 60 cm. For example, the thickness L1 of each pad substrate 111 is 50 cm.

[0042] According to the embodiment of the utility model, the target pad can be pre-fitted, and the fitted target pad is cut into multiple pad substrates 111, and the multiple pad substrates 111 are processed. The overall pad formed by connecting the multiple pad substrates 111 has good conformability, thereby increasing the adjustable amount of the pad while ensuring the overall shape.

[0043] In another embodiment of the present invention, Figure 2 As shown, a plurality of spacer substrates 111 are stacked along the second direction, the thickness of the spacer substrates 111 is 20 cm to 40 cm, and the second direction is a direction perpendicular to the first direction.

[0044] It can be understood that according to the fitted three-dimensional target pad, the thickness direction cutting design is carried out, and in order to further reduce the size after cutting, the cut single-section layer is designed for block design, so as to obtain multiple pad substrates 111 corresponding to the multiple pad units 110. After all the pad substrates 111 are processed, the multiple pad substrates 111 corresponding to the same block area are stacked in sequence and connected and fixed by the connecting piece 120 to obtain a pad unit 110. In this way, the remaining multiple pad substrates 111 corresponding to the same block area are stacked in sequence and connected by the connecting piece 120 to obtain the corresponding multiple pad units 110 in sequence. The multiple pad units 110 are spliced ​​along the blocking direction to obtain the entire trailing edge pad 100.

[0045] It should be noted that when the trailing edge pad 100 is assembled on the outer shell 200 of the wind turbine blade, the axial direction of the wind turbine blade is the length direction of the target pad, the radial direction of the wind turbine blade is the width direction of the target pad, and the second direction can be the thickness direction of the target pad. The target pad can also be cut along the thickness direction, so that multiple pad substrates 111 are stacked in sequence along the thickness direction.

[0046] Optional, such as Figure 2 As shown, when the pad substrates 111 in the pad unit 110 are stacked in sequence along the thickness direction, the thickness L2 of each pad substrate 111 may be 20 cm to 40 cm. For example, the thickness L2 of each pad substrate 111 is 30 cm.

[0047] Furthermore, when the pad substrates 111 are stacked in sequence along the thickness direction, the length of a single pad substrate 111 is relatively long. In order to improve the stability of the connection between all pad substrates 111 in the pad unit 110 and between adjacent pad units 110, all pad substrates 111 in the pad unit 110 can be fixedly connected by a plurality of connectors 120. In this embodiment, Figure 2 It is schematically shown that the pad substrates 111 of the pad unit 110 are connected by three spaced-apart connecting members 120. Preferably, the plurality of connecting members 120 are arranged at equal intervals.

[0048] In a preferred embodiment of the present invention, a plurality of gasket units 110 are spliced ​​end to end, and each gasket substrate 111 of each gasket unit 110 has two adjacent connecting surfaces, which are respectively used to connect with the gasket substrates 111 corresponding to two adjacent gasket units 110.

[0049] Optionally, each pad substrate 111 of each pad unit 110 has two adjacent connecting surfaces (outer surfaces), which can be matching planes. All the pad substrates 111 of each pad unit 110 are stacked in sequence, and one of the connecting surfaces of all the pad substrates 111 of each pad unit 110 is connected to a connecting piece 120, and the other corresponding connecting surface is also connected to a connecting piece 120. Then, all the pad substrates 111 of the pad unit 110 are connected via two connecting pieces 120, and all the pad units 110 are spliced ​​via connecting pieces to form the trailing edge pad of the wind turbine blade of the utility model.

[0050] In this embodiment, the trailing edge pad of the wind turbine blade in this embodiment includes four pad units 110, such as Figure 1 As shown, each pad unit 110 includes 14 pad substrates 111 stacked in sequence along a first direction, each pad substrate 111 has two connection surfaces, and the 14 pad substrates 111 of each pad unit 110 are connected and fixed by two connectors 120. The connector 120 can be made of mesh cloth, and the width L3 of the mesh cloth can be adapted to the thickness of the pad substrate 111. In this embodiment, the thickness L1 of the pad substrate 111 and the width L3 of the mesh cloth are both 50 cm. Then the connection between two adjacent pad units 110 can also be achieved through the mesh cloth, and then the four pad units 110 are spliced ​​and connected in sequence to obtain a complete rear edge pad 100. It should be noted that in other embodiments, the pad units 110 can also be three, five or more pad units connected end to end in sequence, which can be reasonably designed according to the size of the target pad.

[0051] In other embodiments, the wind turbine blade trailing edge pad may also include two pad units 110, such as Figure 2 As shown, each pad unit 110 includes 7 pad substrates 111 stacked in sequence along the second direction. In this embodiment, the thickness L2 of each pad substrate 111 is 30 cm, and each pad substrate 111 has a connecting surface. The connecting parts 120 of the 7 pad substrates 111 of each pad unit 110 are connected and fixed by three connecting parts 120 arranged at intervals. The connecting parts 120 can be made of mesh cloth, and the connection between two adjacent pad units 110 can also be achieved by the mesh cloth. After the two pad units 110 are spliced ​​and connected in sequence, a complete trailing edge pad 100 is obtained.

[0052] In one embodiment of the present invention, a positioning component is provided between adjacent pad substrates 111 to improve the stacking accuracy of multiple pad substrates 111. For example, the positioning component can be in the form of a positioning protrusion and a positioning groove.

[0053] The second embodiment of the utility model provides a wind turbine blade, such as Figure 4As shown, the wind turbine blade includes an outer shell 200 and a wind turbine blade trailing edge pad 100 provided in any of the above embodiments, and the outer shell 200 covers at least a portion of the outer side of the pad unit 110 .

[0054] It is understandable that if Figure 5 As shown, the outer shell 200 includes a blade shape body 230 , and a first skin layer 210 and a second skin layer 220 which are sequentially arranged on the inner wall of the blade shape body 230 from the outside to the inside, and the second skin layer 220 covers the outer side of a portion of the pad unit 110 .

[0055] For example, the first skin ply 210 may be a fiberglass skin ply, and the second skin ply 220 may be a core material skin ply.

[0056] An embodiment of a third aspect of the present invention provides a wind turbine generator set, which includes the wind turbine blades provided by any of the above embodiments.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A wind turbine blade trailing edge pad, characterized in that: It comprises a plurality of spliced ​​cushion block units, each cushion block unit comprises a plurality of cushion block substrates stacked in sequence, and the cushion block substrates of adjacent cushion block units are connected by connecting members; All the spacer substrates of each spacer unit are connected by the connecting member.

2. The wind turbine blade trailing edge pad according to claim 1, characterized in that: The connecting piece includes mesh cloth or mesh felt or adhesive.

3. The wind turbine blade trailing edge pad according to claim 1 or 2, characterized in that: A plurality of the pad substrates are stacked along a first direction, the thickness of the pad substrates is 40 cm to 60 cm, and the first direction is the axial direction of the wind turbine blade.

4. The wind turbine blade trailing edge pad according to claim 1 or 2, characterized in that: A plurality of the spacer block substrates are stacked along a second direction, the thickness of the spacer block substrates is 20 cm to 40 cm, and the second direction is a direction perpendicular to the first direction.

5. The wind turbine blade trailing edge pad according to claim 4, characterized in that: A plurality of the connecting members are arranged between the pad substrates of adjacent pad units, and the plurality of the connecting members are arranged at equal intervals.

6. The wind turbine blade trailing edge pad according to claim 1 or 2, characterized in that: A plurality of the cushion block units are spliced ​​end to end in sequence.

7. The wind turbine blade trailing edge pad according to claim 6, characterized in that: Positioning components are provided between adjacent pad substrates.

8. A wind turbine blade, characterized in that: It comprises an outer shell and a trailing edge pad of a wind turbine blade as claimed in any one of claims 1 to 7, wherein the outer shell covers at least a part of the outer side of the pad unit.

9. A wind turbine generator set, characterized in that: It comprises the wind turbine blade as claimed in claim 8.

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