Noise reduction device of blade of wind generating set
A technology of wind turbines and blades, which is applied in the control of wind turbines, wind turbines, and wind turbines in the same direction as the wind. Wind noise, implementable effects
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[0016] The present invention will be further described below in conjunction with the accompanying drawings.
[0017] refer to Figure 1 ~ Figure 3 , a noise reduction device for a blade of a wind power generating set, the noise reducing device is a zigzag strip structure 2, and the zigzag strip structure 2 is installed at the tail of the blade of a wind power generating set with a wingspan of 70%-100% The sawtooth strip structure includes sawtooth and a mounting surface, and the sawtooth height 8 is 10%-20% of the local airfoil chord length 6 of the blade, and fluctuates in a half-sine wave.
[0018] Further, the sawtooth width 7 is 25%-50% of the sawtooth height 8 .
[0019] Still further, the height 9 of the mounting surface is 25%-50% of the sawtooth height 8, not less than 50mm.
[0020] The manufacturing material of the zigzag strip structure 2 is glass fiber composite material or carbon fiber composite material, and the thickness of the zigzag strip structure 2 is not ...
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