A Vertical Axis Wind Turbine with Adjustable Blade Angle of Attack
A wind turbine and vertical axis technology, applied in the field of vertical axis wind turbines with adjustable blade angle of attack, can solve the problems of inability to rotate blades at any angle, small adjustment range of angle of attack, and high operating costs, so as to improve wind energy utilization and maintain Low maintenance costs and improved utilization efficiency
Inactive Publication Date: 2016-12-21
李东林
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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; some also need to be equipped with cam links, gears, and motors. and other complex adjustment mechanisms, which have not been put into use due to factors such as production difficulties, troublesome maintenance and high operating costs
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[0041] figure 1 , Figure 10 A schematic diagram of an embodiment of the present invention is given. The vertical axis wind turbine with adjustable blade angle of attack in this embodiment is a wind turbine with three sets of blades. figure 1 a is a top view, figure 1 b is a front view; wherein, the number of blades can be set arbitrarily according to needs. The wind turbine in this embodiment includes a blade, a support frame, a wind-facing device, an angle-of-attack device, and the like. The output shaft 1 is inserted into the frame sleeve 2 to rotate independently, the upper and lower ends of the output shaft 1 are rigidly connected to the upper support frame 3 and the lower support frame 4 respectively, and the blades 5 are arranged in a V shape through the blade axis 6, and are connected by the rotating shaft at the lower end. Between the long upper support frame 3 and the shorter lower support frame 4. In order to facilitate the rotation and control of the blade 5 , ...
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The invention relates to a vertical axis wind turbine with adjustable blade angle of attack, which includes an output shaft, a support frame fixedly connected with the output shaft to drive the output shaft to rotate, and a support frame that is installed on the support frame through the rotation of the rotating shaft and pushes the support frame to drive the output shaft to rotate. The blade, the angle-of-attack adjusting device for adjusting the angle of attack of the blade, and the wind-facing device that drives the angle-of-attack adjusting device to rotate against the wind; the angle-of-attack adjusting device includes an oblate angle-of-attack adjusting groove installed on the wind-facing device, and Angle crank; one end of the crank for adjusting the angle of attack is connected to the rotating shaft of the blade, and the other end is slidingly set in the groove for adjusting the angle of attack; when one end of the crank for adjusting the angle of attack slides in the groove for adjusting the angle of attack, the other end drives the rotating shaft to rotate the blade angle of attack. Through the guidance of the groove for adjusting the angle of attack, the crank for adjusting the angle of attack drives the blade to rotate, thereby realizing timely adjustment of the angle of attack of the blade, so that the leading edge of the blade is always kept in the upwind position during operation, effectively improving the utilization efficiency of wind energy.
Description
technical field [0001] The invention relates to a vertical axis wind turbine, more specifically, to a vertical axis wind turbine with an adjustable blade angle of attack, which is applicable to wind power generation and other power requirements. Background technique [0002] Most of the widely used wind energy machines such as wind turbines 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 the present stage. However, horizontal axis wind energy machinery has the disadvantages of high blade tip speed and high noise, so it is not suitable for installation in densely populated areas; the generator and tower are located in the blade scanning area, resulting in the loss of wind interception; the blade movement direction is perpendicular to the wind direction, Blade turns a week and can only intercept wind energy and other deficiencies at one time. [0003...
Claims
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IPC IPC(8): F03D7/06F03D3/00F03D3/06
CPCY02E10/74
Inventor 李东林
Owner 李东林