Noise reducing device for blade, blade, wind generating set and noise reduction method

A technology for wind turbines and noise reduction, which is applied to wind turbines, wind turbines, wind power generation and other directions that are consistent with the wind direction, can solve problems such as loss of power generation and impact on income, and achieve the effect of meeting noise reduction requirements and increasing income.

Active Publication Date: 2018-06-22
JIANGSU GOLDWIND SCI & TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] Usually, the existing noise reduction means are pasted on the trailing edge of the blade after the blade is manufactured. The noise reduction width of this noise reduction method is limited to the vicinity of the maximum noise, while some countries have a The wind speed requires full noise reduction. In addition, the method of reducing the speed or limiting the power can meet the requirements, but the power generation will be lost and the income will be affected.

Method used

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  • Noise reducing device for blade, blade, wind generating set and noise reduction method
  • Noise reducing device for blade, blade, wind generating set and noise reduction method
  • Noise reducing device for blade, blade, wind generating set and noise reduction method

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Embodiment Construction

[0028] The embodiments are described below to explain the present invention by referring to the figures. However, the present invention can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments presented here.

[0029] According to an embodiment of the present invention, a telescopic noise reduction device with a new structure and a blade with the noise reduction device are proposed. Generally speaking, when manufacturing blades, a corresponding space is reserved at the trailing edge of the blade, and a retractable noise reduction device is built in to reduce different wind speeds by controlling the extension length of the noise reduction part at different wind speeds or different speeds. Or the noise of rotating speed, so as to meet the noise reduction requirements of most wind speeds.

[0030] The noise reduction device according to the embodiment of the present invention may include a noise reduction part and a driving ...

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Abstract

The invention discloses a noise reducing device for a blade, the blade, a wind generating set and a noise reduction method. The noise reducing device comprises a noise reducing part and a driving part, wherein the noise reducing part comprises a noise reducing structure; and the driving part is used for driving the noise reducing part under a condition that the noise reducing part is installed atthe tail edge of a blade body so that the noise reducing part stretches or retracts relative to the blade body. According to the noise reducing device disclosed by the embodiment of the invention, thetelescopic noise reducing device is pre-embedded in the tail edge of the blade and can implement varisized shrinkage under different wind speeds so as to realize the aim of reducing noises under different wind speeds.

Description

Technical field [0001] The invention belongs to the technical field of wind power generator sets, and particularly relates to a noise reduction device for blades of a wind power generator set, a blade with the noise reduction device, a wind power generator set with the blade, and a noise reduction method. Background technique [0002] With the rapid development of domestic wind power, the installed capacity is gradually increasing, and newly installed wind turbines are getting closer and closer to residential areas or breeding areas; and the reliability of wind turbines is getting higher and higher. Many wind turbines participate in the competition of international projects. Or in breeding areas, many wind farms abroad have relatively high requirements for noise. [0003] Countries like Australia, Europe or the Americas not only require the maximum sound power level to meet the noise limit, but also have a limit on the noise level of the unit at each wind speed; the existing noise ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D1/06F03D80/00
CPCF03D1/0675F03D80/00F05B2260/962Y02E10/72
Inventor 王兴波朱雨郝刘峰
Owner JIANGSU GOLDWIND SCI & TECH CO LTD
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