Noise reduction device for blade, blade, wind power generator and noise reduction method
A technology for wind turbines and noise reduction, which is applied to wind turbines, wind turbines, and wind power generation in the same direction as the wind. It can solve problems such as loss of power generation and impact on revenue, and achieve the effect of meeting noise reduction requirements and increasing revenue
Active Publication Date: 2020-01-31
JIANGSU GOLDWIND SCI & TECH CO LTD
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
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
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0028] The embodiments are described below in order to explain the present invention by referring to the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein.
[0029] According to an embodiment of the present invention, a novel structure of a retractable noise reduction device and a blade with the noise reduction device are proposed. Generally speaking, when manufacturing the blades, reserve corresponding space at the trailing edge of the blades, build in a retractable noise reduction device, and reduce the wind speed at different wind speeds or by controlling the extension length of the noise reduction part at different speeds. Or the noise of the rotational speed, so as to meet the noise reduction requirements at most wind speeds.
[0030] A noise reducing device according to an embodiment of the present invention may include a noise reducing part and a driving part. ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More 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 generators, and in particular relates to a noise reduction device for blades of a wind power generator, a blade with the noise reduction device, a wind power generator 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 the newly installed wind turbines are getting 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. For residential areas Or breeding areas, many foreign wind farms put forward relatively high requirements for noise. [0003] For countries such as Australia, Europe or America, the noise limit not only requires the maximum sound power level to meet the standard, but also has a limit for the noise level of the unit at each...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(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