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Megawatt-grade wind turbine blade, assembling and manufacturing method thereof and manufacturing method of blade tip

A technology for wind power blades and manufacturing methods, applied in the field of manufacturing, blade tip manufacturing, megawatt-level wind power blades and their assembly, can solve the problems of poor implementability and low reliability of lightning protection protection, and achieve implementability and reliability sex-enhancing effect

Active Publication Date: 2020-10-02
SINOMATECH WIND POWER BLADE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the disadvantages of poor implementability and low reliability of the lightning protection of the blade tip when the blade tip is extended in the prior art, thereby providing a Megawatt wind turbine blades with high lightning protection reliability

Method used

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  • Megawatt-grade wind turbine blade, assembling and manufacturing method thereof and manufacturing method of blade tip
  • Megawatt-grade wind turbine blade, assembling and manufacturing method thereof and manufacturing method of blade tip
  • Megawatt-grade wind turbine blade, assembling and manufacturing method thereof and manufacturing method of blade tip

Examples

Experimental program
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Effect test

Embodiment 1

[0054] This embodiment provides a specific implementation of megawatt-level wind power blades, such as figure 1 As shown, it includes: a blade body 1 and a detachable blade tip 2, the blade body has: a leading edge 11, a trailing edge 12, a windward surface 13 and a leeward surface 14, the root of the blade body is used to connect with the shaft, the blade body A replaceable blade tip 2 is attached to the top of the blade. With the development of blade tip extension and synergistic technology, the length of the blade is getting longer and longer. The length of the blade tip 2 in this embodiment is between 0.2-5m, and the connection surface between the blade tip 2 and the blade body 1 is in the blade thickness direction. Not less than 10cm, the shape of the connecting surface between the blade body and the blade tip is the same, and the surface of the connection area between the blade body 1 and the blade tip 2 has a smooth transition to ensure the continuity of the aerodynamic...

Embodiment 2

[0062] This embodiment provides a specific implementation of wind power blades, such as image 3 As mentioned above, the structure of the wind power blade of this embodiment is substantially the same as that of Embodiment 1, the difference is that the installation structure of this embodiment includes: a post 4 and a slot 5, and the post 4 is arranged on the blade tip 2 , the slot 5 is arranged on the blade body 1. At this time, since the post 4 is a part of the blade tip 2, there is no need for the slot 5 to be insulated.

[0063] In this embodiment, the part of the lightning receptor 3 constitutes the slot 5, and the slot 5 is used to cooperate with the post 4 at the root of the blade tip 2. When connecting, the post 4 on the tip 2 Insert it into the slot 5 at the end of the air-termination device 3, and then fix it with glue to complete the installation. In addition, as an alternative implementation, the blade tip 2 and the lightning receptor 3 may be fixed by other conven...

Embodiment 3

[0065] This embodiment provides a specific implementation of wind power blades, such as Figure 4 As mentioned above, the structure of the wind power blade of this embodiment is substantially the same as that of Embodiment 2, the difference is that: the root of the blade tip 2 of this embodiment is also provided with a slot 5, and then a connecting strip 6 is used to connect the lightning receptor 3 and The blade tips 2 are respectively connected.

[0066] Specifically, when connecting, the two ends of the connecting strip 6 are respectively inserted into the slot 5 of the air receptor 3 and the slot 5 of the blade tip 2, and then glued and fixed with glue, the installation can be completed. In addition, as an alternative implementation, the blade tip 2 and the lightning receptor 3 may be fixed by other conventional fixing methods other than gluing, for example, fasteners or mortise and tenon fixing may be used.

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Abstract

The invention provides a megawatt-grade wind turbine blade, an assembling and manufacturing method thereof and a manufacturing method of a blade tip and belongs to the technical field of wind power equipment. The megawatt-grade wind turbine blade comprises a blade body and a blade tip, wherein the top end of the blade body is provided with an installation structure used for being connected with the blade tip, the blade tip is detachably connected to the top end of the blade body through the installation structure, the blade tip is all made of an insulated material, the thickness of the blade tip is 10-40 cm, and the top end of the blade tip adopts smooth transition. According to the megawatt-grade wind turbine blade, an air termination system is not arranged at the top end of the blade tip, the blade tip is all made of the insulated material, the inner portion of the blade tip does not contain any conductive matter or semiconductive matter, the top end of the blade tip is designed to be in smooth transition, so that the insulating strength of the blade tip is improved, in the climbing arc process of lightning current, the blade tip is free of breakdown and slippery flashing phenomena, and therefore the applicable performance and reliability of lightning protection of the blade tip are greatly improved.

Description

technical field [0001] The invention relates to the technical field of wind power equipment, in particular to a megawatt wind power blade and its assembly, manufacturing method, and blade tip manufacturing method. Background technique [0002] At present, the efficiency-enhancing technologies for blades of megawatt-scale wind turbines that are widely used in the market include: aerodynamic attachment technology and blade extension technology. Among them, blade extension technology includes: blade root extension technology and blade tip extension technology. The blade tip extension and efficiency enhancement technology is based on the traditional momentum blade element theory, and realizes the efficiency increase of the unit by increasing the swept area of ​​the wind rotor, which has the characteristics of significant efficiency increase. [0003] The currently widely used solution is to extend the existing blades and install a lightning protection system on the extended bla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D80/30F03D80/00
CPCF03D1/0633F03D1/0675F03D80/00F03D80/30Y02E10/72Y02P70/50
Inventor 方致阳李成良王向东丁惢
Owner SINOMATECH WIND POWER BLADE
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