Noise reduction device installed on wind turbine tower and wind turbine

Abstract

The invention discloses the technical field of noise reduction devices for wind turbines, in particular to a noise reduction device installed on a wind turbine tower and a wind turbine, aiming to solve the problem in the prior art that the blade noise increases after the blade noise is reflected by the tower. At the same time, the sound pressure level and the blade noise cause the tower vibration to generate secondary noise. The noise reduction component is installed on the tower through the installation component; the installation component includes the upper support ring plate and the lower support ring plate, the upper support ring plate and the lower support ring plate are respectively connected to the installation flange of the tower tube through bolts, and the lower support rotating ring The plate is slidingly connected with the lower support ring plate, the noise reduction component is installed between the upper support ring plate and the lower support rotating ring plate, and the noise reduction component rotates around the axis of the tower synchronously with the lower support rotating ring plate; through the wind turbine tower The noise reduction device is installed on the top, which reduces the reflection of the wind turbine tower to the blade noise, and at the same time reduces the secondary noise caused by the vibration of the wind turbine tower caused by the blade noise.

Description

technical field [0001] The invention belongs to the technical field of wind turbine noise reduction devices, and in particular relates to a noise reduction device installed on a wind turbine tower and a wind turbine. Background technique [0002] Wind energy is a clean renewable energy. Wind power generation is the main form of wind energy utilization. It is also one of the power generation methods with the most mature technology, the most large-scale development conditions and the most commercial development prospects in the current renewable energy except hydropower. At present, the wind power industry is developing rapidly, and many large wind farms have been established, which are getting closer to residential areas. During the day, the ambient noise is relatively large, and the noise of the wind turbine has no obvious impact on daily life. At night, when the ambient noise is small, the noise of the wind turbine has a great impact on people's daily life. The noise of wi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a noise reduction device and a wind turbine installed in the tower of the wind turbine, so as to solve the problem that the sound pressure level of the blade noise in the prior art is increased after the blade noise is reflected by the tower, and at the same time, the noise caused by the blade noise in the tower Technical Problems of Secondary Noise Generated by Vibration

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