Tensioning device for wind power blade flexible assembly

By designing a combination device of support members and tension adjustment members, the problem of difficulty in bonding and easy to damage of flexible materials of wind power blades is solved, and effective tensioning and re-tensioning of flexible components is achieved, ensuring that the components and wind power blade skeletons are completed. consistency and aerodynamic performance.

CN222346334UActive Publication Date: 2025-01-14CHINA MING YANG WIND POWER GRP LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420975393.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-07
Publication Date
2025-01-14
Estimated Expiration
2034-05-07

AI Technical Summary

Technical Problem

It is difficult to bond and tension the flexible materials of traditional wind power blades to be damaged and difficult to make minor or local adjustments, and it is difficult to achieve effective tensioning and re-tensioning of flexible materials in the prior art.

Method used

A tensioning device including a support member, a cable fixing member and a tensioning adjustment member is designed, and the tensioning bolts, flat washers, spring washers and adjustments are used by a combination of a support frame, an upper type support and a tensioning fixing frame. Lock nuts enable removable connection and tension adjustment of flexible components.

Benefits of technology

The micro or local tension adjustment of the flexible components is achieved to ensure that the tensioned components are consistent with the wind power blade skeleton, avoid damage, and improve economical and aerodynamic performance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222346334U_ABST
    Figure CN222346334U_ABST
Patent Text Reader

Abstract

The utility model discloses a tensioning device for a wind power blade flexible assembly. The tensioning device comprises a supporting component, a side cable fixing component and a tensioning adjusting component. The supporting component comprises an upper shape-following support and a tensioning fixing frame, the upper shape-following support comprises multiple sections of shape-following pipe fittings, the multiple sections of shape-following pipe fittings are tightly attached to the appearance structure of the blade shell assembly to be arranged and spliced into a whole, and the tensioning fixing frame is arranged below the upper shape-following support. A plurality of mounting holes are circumferentially formed in the tensioning fixing frame at preset intervals; a first notch is formed in one end of the side cable fixing component, and a second notch matched with a side cable of the blade flexible assembly is formed in the other end of the side cable fixing component. One end of the tensioning adjusting component is arranged in the first notch, and the other end of the tensioning adjusting component penetrates through the mounting hole and then is connected with the tensioning fixing frame; according to the utility model, the tensioning force of the flexible blade assembly is adjusted, and the flexible blade assembly is tensioned again, so that the tensioned flexible blade assembly can adapt to a wind power blade framework.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of tensioning of flexible wind turbine blade components, in particular to a tensioning device for flexible wind turbine blade components. Background Art

[0002] The traditional wind turbine blade shell is made of glass fiber and resin vacuum solidified. The shell thickness increases with the increase of the blade. The increase of the length and weight of the blade will inevitably increase the difficulty coefficient of structural design, production, transportation and hoisting, and the cost will also increase greatly. After the traditional fiberglass shell is made, there are often various defects that need to be manually polished and repaired, and then filled with new materials, which increases material and labor costs. In recent years, with the rapid development and application of flexible materials, it has become a development trend for flexible materials as a new type of material to be applied to the field of wind turbine blades to replace traditional fiberglass. The use of new flexible materials can not only reduce weight, but also reduce various costs.

[0003] However, there are the following problems when using flexible materials in wind turbine blades: 1) It is difficult to bond the flexible material to the wind turbine blade skeleton; 2) The flexible material is easily damaged by tensioning using traditional flexible material splints and tensioners; 3) It is difficult to make slight or local adjustments to the tensioning force of the flexible material using existing technology, and it is difficult to achieve re-tensioning. Utility Model Content

[0004] The utility model aims to solve the deficiencies in the prior art and provides a tensioning device for a flexible component of a wind turbine blade, which can adjust the tensioning force of the flexible component of the blade, perform tensioning and re-tensioning, and at the same time ensure that the flexible component is not easily damaged. The tensioned flexible component can follow the shape of the wind turbine blade skeleton.

[0005] To achieve the above-mentioned purpose, the technical solution provided by the utility model is as follows: a tensioning device for a flexible component of a wind turbine blade, comprising a supporting member, a side cable fixing member and a tensioning adjustment member; the supporting member comprises a supporting frame, an upper profile bracket and a tensioning fixing frame, the upper profile bracket is arranged at the top of the supporting frame, the upper profile bracket comprises a plurality of sections of profile pipes, the plurality of sections of profile pipes are arranged and spliced ​​into a whole in close contact with the outer shape structure of the blade shell component, and are used to place the blade flexible component, the tensioning fixing frame is arranged below the upper profile bracket, and its side length is greater than the upper profile bracket. The side length of the bracket is designed according to the present invention, and the tension fixing frame is provided with a plurality of mounting holes for installing the tension adjusting member at a preset distance in the circumferential direction; a first notch matching the large end of the tension adjusting member is provided at one end of the side cable fixing member along its length direction, and a second notch matching the side cable of the blade flexible component is provided at the other end of the side cable fixing member along its length direction; the large end of the tension adjusting member is arranged in the first notch of the side cable fixing member, and the small end of the tension adjusting member passes through the mounting hole of the tension fixing frame to form a detachable connection with the tension fixing frame.

[0006] Furthermore, the support frame includes a bottom support frame, surrounding support pipes and a fixed frame support frame. The upper conformable support frame is connected to the bottom support frame through surrounding support pipes and supported on the bottom support frame. The tensioning fixed frame is arranged on the outside of the surrounding support pipes and is located between the upper conformable support frame and the bottom support frame. The tensioning fixed frame is connected to the upper conformable support frame through the fixed frame support frame.

[0007] Furthermore, the bottom support frame includes four square tubes, which are connected end to end as a whole, and the surrounding supporting pipes are arranged at the four corners of the bottom support frame. There are multiple fixed frame support frames for strengthening the strength of the supporting components.

[0008] Furthermore, the tensioning and fixing frame includes four angle steels, which are connected end to end to form a whole.

[0009] Furthermore, the tensioning and fixing frame includes four pipe fittings, and the four pipe fittings are connected end to end to form a whole.

[0010] Furthermore, one end of the side rope fixing member has a rectangular cross-sectional shape, and a first slot matching the large end of the tensioning adjustment member is opened at this end along its length direction, and the cross-sectional shape of the first slot is T-shaped, and the first slot is connected to the outer side of the side rope fixing member and is used to place the tensioning adjustment member; the other end of the side rope fixing member has a semicircular cross-sectional shape, and a second slot matching the side rope of the blade flexible component is opened at this end along its length direction, and the cross-sectional shape of the second slot is circular, and the second slot is connected to the outer side of the side rope fixing member through a narrow groove, and the connection between the second slot and the narrow groove is a rounded transition, which is used to avoid scratching the blade flexible component.

[0011] Furthermore, the tensioning and adjusting component includes a tensioning bolt, a flat washer, a spring washer and an adjusting locking nut. The large head end of the tensioning bolt is arranged in the first slot of the side cable fixing component. After the small head end of the tensioning bolt passes through the mounting hole of the tensioning fixing frame, the flat washer, the spring washer and the adjusting locking nut are inserted in sequence to form a detachable connection between the tensioning and adjusting component and the tensioning fixing frame.

[0012] Furthermore, the blade flexible component comprises a flexible component body and a side cable. The flexible component body is curled around and wraps the side cable. The side cable can be inserted into and fixed in the second notch of the side cable fixing component.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] 1. The utility model can make the stretched blade flexible component consistent with the aerodynamic shape of the wind turbine blade, thus ensuring the aerodynamic performance of the wind turbine blade;

[0015] 2. The utility model can make slight or partial adjustments to the tensioning force of the blade flexible component and realize re-tensioning;

[0016] 3. Compared with the traditional flexible material clamps and tensioners, the use of the utility model for tensioning blade flexible components can ensure that the flexible components are not easily damaged, thereby improving the economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a structural cross-section diagram of the supporting member.

[0019] Figure 3 It is a cross-sectional view of the connection structure of the supporting member, the side cable fixing member and the tensioning and adjusting member. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with specific embodiments.

[0021] See also Figures 1 to 3 As shown, the tensioning device for the wind turbine blade flexible component 4 provided in this embodiment includes a supporting member 1, a side cable fixing member 2 and a tensioning adjustment member 3;

[0022] The blade flexible component 4 includes a flexible component body 401 and a side rope 402. The flexible component body 401 is curled around and wraps the side rope 402. The side rope 402 is a rubber rope or a nylon rope, and its length is greater than the side length of the flexible component body 401, so as to facilitate stretching.

[0023] The support structure 1 includes a support frame, an upper conformable support 103 and a tensioning and fixing frame 104. The support frame includes a bottom support frame 101, surrounding support pipes 102 and a fixing frame support frame 105.

[0024] The upper conformable support frame 103 is connected to the bottom support frame 101 through surrounding support pipes 102 and supported on the bottom support frame 101, wherein the bottom support frame 101 includes four square tubes, which are connected end to end as a whole, preferably welded end to end as a whole, and the surrounding support pipes 102 are arranged at the four corners of the bottom support frame 101, and the upper conformable support frame 103 includes multiple sections of conformable pipes, which are arranged and spliced ​​into a whole in close proximity to the outer structure of the blade shell assembly, preferably, multiple sections of conformable pipes are arranged and welded into a whole in close proximity to the outer structure of the blade shell assembly, ensuring that the conformable pipes are conformable to the wind turbine blades and are used to place the blade flexible assembly 4;

[0025] The tension fixing frame 104 is arranged on the outside of the surrounding supporting pipes 102 and is located between the upper conformal supporting frame 103 and the bottom supporting frame 101, and its side length is greater than the side length of the upper conformal supporting frame 103. The tension fixing frame 104 is provided with a plurality of mounting holes for mounting the tension adjustment member 3 at a preset interval in the circumferential direction, and the distance between each mounting hole is set according to the length of the side cable fixing member 2. Preferably, the tension fixing frame 104 includes four angle steels, and the four angle steels are welded end to end into a whole;

[0026] The tensioning fixing frame 104 is connected to the upper conformable supporting frame 103 via a fixing frame support frame 105, and there are multiple fixing frame support frames 105 for strengthening the strength of the supporting member;

[0027] The cross-sectional shape of one end of the edge cable fixing member 2 is rectangular, and a first notch matching the large end of the tension adjustment member 3 is opened at the end along its length direction, and the cross-sectional shape of the first notch is T-shaped, and the first notch is connected to the outer side of the edge cable fixing member 2, and is used to place the tension adjustment member 3; the cross-sectional shape of the other end of the edge cable fixing member 2 is semicircular, and a second notch matching the edge cable 402 of the blade flexible component 4 is opened at the end along its length direction, and the edge cable 402 can be inserted into and fixed in the second notch, and the cross-sectional shape of the second notch is circular, and the second notch is connected to the outer side of the edge cable fixing member 2 through a narrow groove, and the connection between the second notch and the narrow groove is rounded transition, which is used to avoid scratching the blade flexible component 4;

[0028] The tensioning adjustment component 3 includes a tensioning bolt 301, a flat washer 302, a spring washer 303 and an adjusting locking nut 304. The large head end of the tensioning bolt 301 (i.e., the external hexagonal head of the tensioning bolt 301) is arranged in the first slot of the side rope fixing component 3. The small head end of the tensioning bolt 301 (i.e., the screw rod of the tensioning bolt 301) passes through the mounting hole of the tensioning fixing frame 104, and then passes through the flat washer 302, the spring washer 303 and the adjusting locking nut 304 in sequence, so that the tensioning adjustment component 3 forms a detachable connection with the tensioning fixing frame 104. The tensioning force of the blade flexible component 4 can be adjusted by tightening or loosening the adjusting locking nut 304.

[0029] The process of tensioning the blade flexible component 4 using the tensioning device for the wind turbine blade flexible component 4 provided in this embodiment is as follows:

[0030] Place one end of the side cable 402 into the second notch of the side cable fixing member 2, slide the side cable fixing member 2 along the length direction of the side cable 402 until the flexible component body 401 is left at both ends and the exposed length is roughly equal, and the other three side cables 402 are connected to the blade flexible component and the side cable fixing member 2 in sequence according to the above steps; place the outer hexagonal head of the tension bolt 301 into the first notch of the side cable fixing member 2, and slide it along the length direction of the side cable fixing member 2, and place the other tension bolts 301 in sequence according to the above steps, and insert the screw end of the tension bolt 301 into the mounting hole of the tension fixing frame 104, and complete the preliminary connection of the blade flexible component 4 The position is fixed; the flat washer 302 and the spring washer 303 are inserted into the screw of the tension bolt 301 in turn, and then the adjustment locking nut 304 is screwed in, and fixed to the tension fixing frame 104 through the side cable fixing component 2 and the tension adjustment component 3; tightening all the adjustment locking nuts 304 can adjust the tensioning force of the blade flexible component 4, and at the same time adjust the tightening of a single adjustment locking nut 304 and adjust the tensioning force of the local position of the blade flexible component 4; the tensioned flexible component body 401 and the upper conformal support frame 103 are tightly attached to the conformal, so that the blade flexible component 4 meets the requirements of being bonded to the wind turbine blade skeleton.

[0031] The embodiments described above are only preferred embodiments of the present invention, and are not intended to limit the scope of implementation of the present invention. Therefore, all changes made based on the shape and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tensioning device for a flexible component of a wind turbine blade, characterized in that: It comprises a supporting member, a side rope fixing member and a tensioning and adjusting member; the supporting member comprises a supporting frame, an upper profile bracket and a tensioning and fixing frame, the upper profile bracket is arranged at the top of the supporting frame, the upper profile bracket comprises a plurality of sections of profiled pipe fittings, the plurality of sections of profiled pipe fittings are arranged and spliced ​​into a whole close to the outer shape structure of the blade shell assembly, and are used to place the blade flexible assembly, the tensioning and fixing frame is arranged below the upper profile bracket, and its side length is greater than the side length of the upper profile bracket, the tensioning and fixing frame is provided with a plurality of mounting holes for installing the tensioning and adjusting member at a preset interval in the circumferential direction; a first notch matching the large end of the tensioning and adjusting member is provided at one end of the side rope fixing member along its length direction, and a second notch matching the side rope of the blade flexible assembly is provided at the other end of the side rope fixing member along its length direction; The large end of the tension adjustment member is arranged in the first notch of the side cable fixing member, and the small end of the tension adjustment member passes through the mounting hole of the tension fixing frame to form a detachable connection with the tension fixing frame.

2. A tensioning device for a wind turbine blade flexible component according to claim 1, characterized in that: The support frame includes a bottom support frame, surrounding support pipes and a fixed frame support frame. The upper conformable support frame is connected to the bottom support frame through the surrounding support pipes and supported on the bottom support frame. The tensioning fixed frame is arranged on the outside of the surrounding support pipes and is located between the upper conformable support frame and the bottom support frame. The tensioning fixed frame is connected to the upper conformable support frame through the fixed frame support frame.

3. A tensioning device for a wind turbine blade flexible component according to claim 2, characterized in that: The bottom support frame includes four square tubes, which are connected end to end as a whole. The surrounding supporting pipes are arranged at the four corners of the bottom support frame. There are multiple fixed frame support frames for strengthening the strength of the supporting components.

4. A tensioning device for a wind turbine blade flexible component according to claim 2, characterized in that: The tensioning fixing frame comprises four angle steels, which are connected end to end to form a whole.

5. The tensioning device for a wind turbine blade flexible component according to claim 2, characterized in that: The tensioning and fixing frame comprises four pipe fittings, which are connected end to end to form a whole.

6. A tensioning device for a wind turbine blade flexible component according to claim 1, characterized in that: The cross-sectional shape of one end of the side rope fixing component is rectangular, and a first slot matching the large end of the tensioning and adjusting component is opened at this end along its length direction, and the cross-sectional shape of the first slot is T-shaped. The first slot is connected to the outer side of the side rope fixing component and is used to place the tensioning and adjusting component; the cross-sectional shape of the other end of the side rope fixing component is semicircular, and a second slot matching the side rope of the blade flexible component is opened at this end along its length direction, and the cross-sectional shape of the second slot is circular. The second slot is connected to the outer side of the side rope fixing component through a narrow groove, and the connection between the second slot and the narrow groove is a rounded transition to avoid scratching the blade flexible component.

7. A tensioning device for a wind turbine blade flexible component according to claim 1, characterized in that: The tensioning and adjusting component includes a stretching bolt, a flat washer, a spring washer and an adjusting locking nut. The large head end of the stretching bolt is arranged in the first slot of the side cable fixing component. After the small head end of the stretching bolt passes through the mounting hole of the tensioning fixing frame, the flat washer, the spring washer and the adjusting locking nut are inserted in sequence to form a detachable connection between the tensioning and adjusting component and the tensioning fixing frame.

8. The tensioning device for a wind turbine blade flexible component according to claim 1, characterized in that: The blade flexible component comprises a flexible component body and a side cable. The flexible component body is curled around and wraps the side cable. The side cable can be inserted into and fixed in the second notch of the side cable fixing component.