Environment-friendly low-noise wind-driven generator

Abstract

The invention discloses an environment-friendly low-noise wind-driven generator, and belongs to the field of wind-driven generators. According to the environment-friendly low-noise wind-driven generator, by changing influence of a wind wheel on surrounding airflow, the wind wheel is not prone to forming periodic low-frequency sound waves in the working process, generated periodic low-frequency noise of the wind wheel in the working process is reduced, aiming for noise generated by a generator unit, a speed change gearbox and other structures in a unit outer cover, the unit outer cover can be arranged in a completely sealed structure, so that the probability of noise external transmission when the generator unit and the speed change gearbox work is reduced, the low-frequency noise which isexternally transmitted in the working process of the wind-driven generator is greatly reduced, the pollution problem of the wind-driven generator is reduced, the position which is close to an electricity consumer is selected when the wind-driven generator is constructed, the selection possibility of wind-driven generator construction is increased, and the remote transmission loss of wind power generation is reduced.

Description

technical field [0001] The invention relates to the field of wind power generators, in particular to an environment-friendly low-noise wind power generator. 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. A wind turbine generally includes a wind wheel, a generator (including devices), a steering device (tail), a tower, and a limiter. The working principle of the wind turbine is relatively simple. The wind rotor rotates under the action of the wind. It converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft, and the generator rotates under the drive of the wind rotor shaft. Power generation, broadly speaking, wind energy is also solar energy, so it can also be said that a wind generator is a thermal energy utilization generator that uses the sun as a heat source and the atmosphere as a working medium. [...

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Problems solved by technology

[0004] However, in the process of practical application of wind turbines, there are shortcomings beyond the design of technicians. During the normal operation of wind turbines, the wind wheel, generator set and gear box for variable speed will produce periodic vibrations. , and these periodic vibrations will generate low-frequency noise, and these low-frequency noises are usually low in decibels. It is difficult to find problems during the environmental acceptance process at the beginning of the wind turbine. The harm of low-frequency noise will gradually appear. Although the direct impact of low-frequency noise on physiology is not as obvious as that of high-frequency noise, low-frequency noise will have a long-term impact on human health. Studies have shown that people who have been exposed to low-frequency noise for a long time People will have an obvious tendency to depression, which will have a serious impact on human health

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