Wind driven generator blade tip lightning arrester

Abstract

The invention discloses a wind driven generator blade tip lightning arrester, and relates to the technical field of wind driven generators. The wind driven generator blade tip lightning arrester comprises a base, the top of the base is fixedly connected with a sleeve, the top of the sleeve is provided with a rotating shaft, the inner side wall of the middle of the rotating shaft is slidably connected with a lightning rod, and the rotating shaft is internally provided with a driving mechanism. In rainy days, rainwater is collected through a flow guide ring, so that the rainwater enters the rotating shaft, a push plate is downwards pushed to move through continuous collection of the rainwater and the gravity effect of the rainwater, a threaded rod is rotated accordingly, then a driving belt wheel is driven to rotate, a lifting rod is driven to rotate through a belt and a driven belt wheel, the lightning rod is pushed to the top of the rotating shaft, and effective lightning protection is achieved; and moreover, the lightning rod is protected when not in use, and is prevented from being damaged due to external factors when not in use, the service life of the lightning rod is prolonged, and faults of a wind driven generator caused by lightning stroke are prevented.

Description

technical field [0001] The invention relates to the technical field of wind power generators, in particular to a lightning protection device for blade tips of wind power generators. Background technique [0002] A wind turbine is a power device that converts wind energy into mechanical work, which drives the rotor to rotate, and finally outputs alternating current. Wind turbines are generally composed of components such as wind rotors, generators (including devices), steering devices (tail fins), towers, speed-limiting safety mechanisms, and energy storage devices. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of the wind, which converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft, and the generator rotates to generate electricity under the drive of the wind rotor shaft. In a broad sense, wind energy is also solar energy, so it can also be said that a wind generator is a thermal en...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problems in the prior art that the lightning rod cannot be effectively protected when it is not in use in rainy days, so that the service life of the lightning rod is shortened, and the generator cannot be automatically stopped when it is used in rainy days, so that The continuous operation of the generator in rainy days will cause rainwater to enter the generator through the rotation of the wind turbine, resulting in damage to the generator, and the effective lubrication of the shaft of the wind turbine cannot be achieved, causing the wind turbine to be damaged during operation. The resistance is large, which reduces the power generation efficiency, and a wind turbine blade tip lightning protection device is proposed

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