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Fan blade lighting protection device

A technology of wind turbine blades and lightning protection devices, which is applied in the direction of wind turbines, corona discharge devices, wind turbine components, etc., can solve the problems of blade tip damage and destruction, and achieve firm installation, good safety, and reasonable structural design Effect

Active Publication Date: 2015-08-26
张瑞恩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the blade structure, the blade air receptors in the prior art are generally installed at a distance of 200-500mm from the end of the blade. During the blade rotation process when the fan is working normally, the tip of the blade is the first to contact the charged cloud. , the current will pass through the tip of the blade to effectively conduct to the lightning protection path of the fan, so it will discharge through the tip of the blade, and a strong current will be generated instantly, causing the tip of the blade to be damaged or destroyed

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] like Figure 1-5 As shown, the fan blade lightning protection device includes a fan blade 6, a lightning receptor 1 installed on the fan blade 6, a conductive cap 3 is set outside the blade tip 4 of the fan blade 6, and the inner surface of the conductive cap 3 is in contact with the blade. The outer surfaces of the tip 6 are attached together, and the inner surface of the conductive cap 3 and the outer surface of the corresponding position of the blade tip 4 are provided with friction lines 9, and the two are closely bonded by an adhesive, and the conductive cap 3 and the fan blade 6 The blade tip 4 is fixedly connected by the fixing pin 2, and a through hole is opened at the corresponding position of the conductive cap 3 and the blade tip 4, and the fixing pin 2 is inserted into the through hole, and the fixing pin 2 is assembled by the axial threaded parts A and Composed of part B, part A and part B are both pan-head bolt structures. In this embodiment, three fixing ...

Embodiment 2

[0029] The structure different from Embodiment 1 is that the diameter of the outer end 8 of the semicircular pan head of the lightning rod 7 is 40 mm, the distance between the open end 5 of the conductive cap 3 and the lightning receptor 1 is 80 mm, and the material of the conductive cap 3 is stainless steel , the thickness of the conductive cap 3 is 1 mm, and the rest of the structure is as described in Embodiment 1.

Embodiment 3

[0031] The structure different from Embodiment 1 is that the diameter of the outer end 8 of the semicircular pan head of the lightning rod 7 is 60mm, the distance between the open end 5 of the conductive cap 3 and the lightning receptor 1 is 120mm, and the material of the conductive cap 3 is aluminum. quality, the thickness of the conductive cap 3 is 3mm, and the rest of the structure is as described in Embodiment 1.

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Abstract

The invention relates to a fan lightning protection device, in particular to a fan blade lighting protection device. The device comprises a fan blade and a lightning arrester installed on the fan blade. The tip of the fan blade is sleeved with an electric conduction cap, the inner surface of the electric conduction cap is attached to the outer surface of the tip, the electric conduction cap is connected with the fan blade in a fastened mode, and the back of the electric conduction cap and the lightning arrester are connected in an electric conduction mode and assembled in a fastened mode. The fan blade lightning protection device has the advantages of being capable of effectively protecting the tip of the fan blade from being damaged by lightning, good in lightning protection effect, simple in structure, easy and convenient to install and use and good in safety performance.

Description

technical field [0001] The invention relates to a lightning protection device for a fan, in particular to a lightning protection device for a fan blade. Background technique [0002] Wind power is green and safe, and has been widely popularized and developed in China in recent years. Wind turbines are generally located at high points higher than the surrounding area, so they are easily struck by lightning, especially the blades of the wind turbines. Due to the very large randomness of lightning phenomena, it is impossible to completely avoid lightning strikes. We can only take reasonable and effective lightning protection measures during the design, manufacture, installation and subsequent maintenance of wind turbines to reduce the losses caused by lightning strikes. to the minimum. Blade lightning protection is an important part of wind turbine lightning protection, which must be paid attention to and strengthened. At present, the commonly used lightning protection desig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00H01T19/00
CPCH01T19/00F03D80/30F05B2240/307Y02E10/72
Inventor 张瑞恩张建伟张静朱琳张瑞雅
Owner 张瑞恩
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