Lightning protection blade of wind turbine generator
A technology for wind turbines and lightning protection blades, which is applied to wind power generation, wind turbines in the same direction as the wind, wind turbines, etc. It can solve the problems of insufficient overall structure of the blades, small lightning protection, and poor lightning reception effect. Good lightning protection effect, light weight and long service life
Pending Publication Date: 2021-04-02
JILIN TONGYU WINDPOWER BRANCH OF HUANENG INT POWER DEV CORP +1
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Problems solved by technology
[0003] 1) At present, the lightning protection measures for wind power blades are to arrange lightning receptors on the tip of the blades, while the traditional lightning protection methods have poor lightning protection and low lightning protection; Affected prone to cracks, low life
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[0029] The present invention will be described in further detail below in conjunction with accompanying drawing, and its content is explanation of the present invention rather than limitation:
[0030] Such as Figure 1 ~ Figure 3 , is the wind turbine lightning protection blade of the present invention, including a base 1, and a connecting piece 2 is welded and fixed on the bottom of the base 1. The connecting piece 2 generally adopts a flange assembly, and the connecting piece 2 is used to connect with the hub. The connecting piece 2 can be flange.
[0031] There is a first cavity inside the base 1, a blade body 3 is welded and fixed on the top of the base 1, and a second cavity is opened inside the blade body 3; several support plates 4 are fixedly arranged in the second cavity, and the support plate 4 The rear side surface of the support plate 4 is welded and fixed with several first connecting columns 5, the first connecting columns 5 are welded and fixed with the inner ...
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The invention discloses a lightning protection blade of a wind turbine generator, and belongs to the technical field of wind power generation. The upper portion and the lower portion of a base are connected with a blade body and a connecting piece correspondingly, a second cavity is formed in the blade body, and a supporting plate is arranged in the blade body. A supporting column penetrates through the supporting plates, and the two ends of the supporting column are connected with the inner wall of the second cavity. A third cavity is formed in the outer side of the second cavity, a metal netis arranged in the third cavity, and a first conductive strip is arranged on the outer surface of the blade body and connected with a leading terminal. The blade tip of the blade body is connected with a second conductive strip, the second conductive strip is connected with a lightning arrester, and the bottom of the lightning arrester penetrates through the blade body to reach the third cavity and is connected with the metal net. A conducting rod is connected to the back side surface of the blade body, the first conductive strip and the second conductive strip are connected with the conducting rod, and the conducting rod is connected with a grounding device of the wind turbine generator through a wire. The blade can be effectively protected against lightning stroke, the firmness of the blade is improved while the weight of the blade is reduced, and the service life of the blade is prolonged.
Description
technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a lightning protection blade of a wind turbine. Background technique [0002] Wind turbines are usually installed in open fields, and they are often struck by lightning during thunderstorms. Since the blades of the wind turbine are at a higher position during rotation, it is necessary to install lightning protection devices on the blades of the wind turbine. . The existing lightning protection blades have the following deficiencies: [0003] 1) At present, the lightning protection measures for wind power blades are to arrange lightning receptors on the tip of the blades, while the traditional lightning protection methods have poor lightning protection and low lightning protection; The impact is prone to cracks and has a low lifespan. Contents of the invention [0004] In order to solve the above-mentioned defects in the prior art, the purpose of the...
Claims
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IPC IPC(8): F03D1/06F03D80/30
CPCF03D1/0675F03D80/30Y02E10/72
Inventor 杨晓峰付薇任鑫郭辰童彤王恩民王华赵鹏程王晨张丽达于景龙马振涛王献文王锡岷燕振元张俊东沈波王玲山
Owner JILIN TONGYU WINDPOWER BRANCH OF HUANENG INT POWER DEV CORP