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A lightning-proof wind turbine blade

A technology for wind turbines and blades, which is applied in the field of components of wind turbines. It can solve problems such as structural damage to the blade itself, failure of the grounding structure, and high technical difficulty. It achieves excellent lightning conduction effects, easy manufacturing and molding, and low technical difficulty. Effect

Active Publication Date: 2022-04-01
东方电气风电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The lightning protection blade with this structure is not only complicated in manufacturing process and technically difficult, but once the copper mesh is damaged in service, it cannot be maintained and replaced; moreover, in the lightning test and appraisal, lightning is conducted through the abdominal cavity of the blade, causing flashover in the abdominal cavity. The arc and lightning detonation effect will cause serious interference to the electronic equipment in the abdominal cavity-for example, it will cause the grounding structure in the abdominal cavity to fail, and it will also cause damage to the structure of the blade itself; in addition, the copper mesh is arranged in the blade shell Yes, it is covered by the forming structure of the blade shell - such as coating, the forming structure of the blade shell will be broken down and damaged when the lightning conducts

Method used

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  • A lightning-proof wind turbine blade
  • A lightning-proof wind turbine blade
  • A lightning-proof wind turbine blade

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, the present invention includes a blade shell 1 and two sets of conduction assemblies 4 .

[0039]Wherein, the blade shell 1 is surrounded by arc-shaped halves on both sides, and has an abdominal cavity. In the abdominal cavity of the blade shell 1, a web 2 supporting the arc-shaped halves on both sides is provided. The two ends of the web 2 are respectively provided with spar caps 3 of carbon fiber structure, that is, the ends of the web 2 are connected by the corresponding spar caps 3. Form a connection with the corresponding arc-shaped half. In this way, there are two sets of spar caps 3 of carbon fiber structure in the abdominal cavity of the blade shell 1, see figure 2 shown.

[0040] The structures of the two groups of conducting assemblies 4 are basically the same, and the arrangement positions of the two groups of conducting assemblies 4 on the blade shell 1 correspond to the position...

Embodiment 2

[0063] see Figure 6 As shown, the present invention includes a blade shell 1 and two sets of conduction assemblies 4 .

[0064] Wherein, the blade shell 1 is surrounded by arc-shaped halves on both sides, and has an abdominal cavity. In the abdominal cavity of the blade shell 1, there are webs supporting the arc-shaped halves on both sides. The two ends of the webs are respectively provided with carbon fiber structure spar caps, that is, the ends of the webs are connected to the corresponding arc-shaped fins through the corresponding spar caps. The halves form the connection. In this way, there are two sets of spar caps of carbon fiber structure in the abdominal cavity of the blade shell 1 .

[0065] The structures of the two groups of conduction assemblies 4 are basically the same, and the arrangement positions of the two groups of conduction assemblies 4 on the blade shell 1 correspond to the positions of the two sets of spar caps in the abdominal cavity. A one-to-one ma...

Embodiment 3

[0088] The invention includes a blade shell and two sets of conduction assemblies.

[0089] Wherein, the blade shell is surrounded by arc-shaped halves on both sides, and has an abdominal cavity. In the abdominal cavity of the blade shell, there are webs supporting the arc-shaped halves on both sides. The two ends of the webs are respectively provided with carbon fiber structure spar caps, that is, the ends of the webs are connected to the corresponding arc-shaped halves through the corresponding spar caps. The body forms a connection. In this way, there are two sets of spar caps of carbon fiber structure in the abdominal cavity of the blade shell.

[0090] The structures of the two groups of conduction components are basically the same. The arrangement positions of the two groups of conduction components on the blade shell correspond to the positions of the two sets of spar caps in the abdominal cavity. Form a one-to-one correspondence relationship.

[0091] Now take the f...

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Abstract

The invention discloses a lightning protection type wind power generator blade, which comprises a blade shell, at least one set of conductive components is inlaid on the outer surface of the blade shell; the conductive component has at least one The longitudinal conductors arranged from the blade tip to the blade root, the longitudinal conductors are single-core conductor structures, and the outer surface of the longitudinal conductors of the conduction assembly is not covered by the molding structure of the blade shell. The invention has a simple structure, is convenient for manufacturing and molding and later maintenance, has a good lightning conduction effect, and is beneficial to long-term, stable and reliable service on the wind power generator.

Description

technical field [0001] The invention relates to components of wind power generators, in particular to a lightning-proof wind power generator blade. Background technique [0002] Wind turbines use a relatively open area as a wind farm, and they are built more than 100 meters high, so they are vulnerable to lightning strikes, such as offshore wind turbines. Due to the structural characteristics of the wind turbine, when it is struck by lightning, the blades form the lightning upward leader, especially the carbon fiber structure blades with large sweeping area, light weight and certain conductivity. [0003] In order to solve the technical problem that wind turbines are easily struck by lightning, the industry usually designs their blades as lightning conduction structures, that is, the blades have the function of wind energy conversion and form lightning conduction functions at the same time. [0004] At present, the lightning protection blade is mainly composed of the blade ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06F03D80/30
CPCF03D1/0675F03D80/30Y02E10/72Y02P70/50
Inventor 刘平曾明伍杨奎滨薛浩鹏吴鑫波赵伟李松林羊森林钟贤和韩东
Owner 东方电气风电股份有限公司
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