Vertical axis wind turbine capable of continuously keeping effective attack angle of blades

Abstract

The invention discloses a vertical axis wind turbine capable of continuously keeping the effective attack angle of blades. The vertical axis wind turbine comprises an output shaft, a supporting frame, the blades, an attack angle adjusting device and a wind alignment device, wherein the supporting frame is fixedly connected with the output shaft and drives the output shaft to rotate, the blades are installed on the supporting frame through rotation of a rotating shaft and push the supporting frame to drive the output shaft to rotate, the attack angle adjusting device is used for adjusting the attack angle of the blades, and the wind alignment device is used for driving the attack angle adjusting device to rotate to achieve wind alignment. The attack angle adjusting device comprises at least one attack angle adjusting guide rail and at least one attack angle adjusting crank (8), wherein the attack angle adjusting guide rail is installed on the wind alignment device and is in a standard circular shape. The attack angle adjusting guide rail surrounds the axis of the output shaft. The blades are rotationally connected to the supporting frame. One end of the attack angle adjusting crank (8) is fixedly connected with the blades, and the other end of the attack angle adjusting crank (8) is arranged on the attack angle adjusting guide rail in a sliding mode. The vertical axis wind turbine can effectively increase the utilization rate of wind energy and is easy to manufacture, low in cost and convenient to maintain.

Description

technical field [0001] The invention relates to a vertical axis wind turbine, in particular to a vertical axis wind turbine capable of continuously maintaining the effective angle of attack of the blades. Background technique [0002] The vast majority of wind energy machines such as wind turbines currently widely used are of horizontal axis structure, which has the advantages of mature technology, simple structure and high efficiency, and has become the main model of commercial operation at this stage. However, the horizontal axis wind energy machinery also has high blade tip speed and loud noise, so it is not suitable for installation in areas with large populations; the generator and tower are located in the blade scanning area, resulting in loss of wind section; The cost of the bracket; the movement direction of the blade is perpendicular to the wind direction, and the blade can only intercept wind energy at one time after one rotation. [0003] The vertical axis wind e...

AI Technical Summary

Problems solved by technology

[0004] As a result, there have been many designs of vertical axis wind turbines that can change the angle of attack of the blades during operation, but because the adjustment range of the angle of attack is small, the blades cannot be rotated at any angle; the mechanism for adjusting the angle of attack is complicated, and energy is consumed when adjusting the angle of attack Large, wear and tear; some need to be equipped with complex adjustment mechanisms such as cam connecting rods, gears, motors; and factors such as difficult production, troublesome maintenance and high operating costs have not been put into use

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