Lightning protection system for wind turbine blade

Abstract

The invention relates to the technical field of lightning protection devices, and discloses a lightning protection system for a wind turbine blade. The lightning protection system comprises a blade body lightning arresting unit, a blade tip lightning arresting unit and a lead wire; the blade body lightning arresting unit comprises a blade body lightning arrester and a blade body lightning arresterbase; threaded holes perpendicular to the upper end surface and the lower end surface are correspondingly formed in the upper end surface and the lower end surface of the blade body lightning arrester base; threaded columns matched with the threaded holes are arranged at the lower end of the blade body lightning arrester; the blade tip lightning arresting unit comprises a blade tip lightning arrester and a blade tip lightning arrester base; a clamping groove is formed in the end part of the blade tip lightning arrester; a clamping block matched with the clamping groove is arranged at one endof the blade tip lightning arrester base; threaded holes are formed in the clamping block; and counterbores paired with the threaded holes in the clamping block are formed in the clamping groove. In the scheme, the blade body lightning arresting unit and the blade tip lightning arresting unit are separately connected in a matching manner, so that the surface-surface fit of the lightning arrestersand the lightning arrester bases is realized, the electrical contact area is sufficient, the lightning protection system is stable and reliable, and the phenomenon of sparking is prevented, so that abetter lightning protection effect is achieved.

Description

technical field [0001] The invention relates to the technical field of lightning protection equipment, in particular to a lightning protection system for wind power blades. Background technique [0002] Wind turbines are usually installed in open fields, and they are often struck by lightning during thunderstorms. Since the blades of wind turbines are at a higher position during rotation, it is necessary to install lightning protection systems on the blades of wind turbines. . [0003] At present, the lightning protection system of wind power blades is connected by a lightning protection wire to the lightning-terminating system at each position. Each blade has multiple sets of air-termination system on the blade body and one air-termination system on the tip of the blade. Each leaf-body air-termination system has two air-terminations, which are respectively distributed on the PS shell and the SS shell. Each leaf-body air-termination system is mainly composed of an air-termi...

AI Technical Summary

Problems solved by technology

[0005] The present invention intends to provide a lightning protection system for wind power blades to solve the problem that the surface of the air-termination device and the surface of the base cannot be bonded face to face in the air-termination system of the blade body, which leads to poor lightning protection effect, and the air-termination device at the tip of the blade cannot be disassembled. Complicated problems with electrical connections

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