Wind driven generator blade root area surface flow control mechanism

Abstract

The invention discloses a wind driven generator blade root area surface flow control mechanism which comprises a blade, a self-vibration reed, a clamping component, a first sealing plate, a second sealing plate and a clamping box, the outer surface of the blade is provided with a mounting groove matched with the self-vibration reed, the self-vibration reed is mounted in the mounting groove, and the clamping box is arranged in the mounting groove. Two third sealing plates are mounted on the end face, close to the mounting groove, of the inner wall of the blade, the third sealing plates are perpendicular to the inner wall of the blade, the two third sealing plates are oppositely mounted, a sealing groove is formed in each third sealing plate, and a sliding plate is slidably connected to the interior of each sealing groove; the clamping block can be clamped to the gap between the first sealing plate and the second sealing plate for sealing, the first sealing rubber is arranged on the outer wall of the clamping block so that sealing can be achieved between the clamping block and the first sealing plate and between the clamping block and the second sealing plate, and the effect of preventing water and air from entering is achieved.

Description

technical field [0001] The present invention relates to the technical field of wind power generation. Specifically, it is a surface flow control mechanism in the blade root area of ​​a wind turbine blade. Background technique [0002] At present, wind power generation technology is more and more widely used, and the most important component of wind turbine is the blade; the wind turbine works in the natural environment, under the influence of gust, wind shear, wind direction change and other factors, the blade spanwise airfoil section The inflow angle of attack will fluctuate, resulting in alternating aerodynamic loads on the blades. This alternating load is considered to be the main cause of excessive fatigue and damage to the wind turbine structure; when the amplitude of the angle of attack fluctuation is too large, it will also On the surface of the blade, especially at the blade root, flow separation occurs; large-scale flow separation increases the surface resistance o...

AI Technical Summary

Problems solved by technology

[0004] In the above-mentioned patent documents, there will be relatively severe vibration when the blade is working, and the working environment is windy, sunny, rainy, winter and summer alternately, and the weld seam is easy to crack, which will cause the seal to fail, causing water or dust to enter the inside of the fan blade , causing the blade to increase its own weight when the blade is working, and affect the service life, and the reed has the risk of falling

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