Turbulent flow device of Vertical axis wind turbine, bracket and vertical axis wind turbine

Abstract

The invention provides a turbulent flow device of a vertical axis wind turbine, a bracket and the vertical axis wind turbine. Outer surfaces of two layers of horizontal surfaces of the turbulent flow device of the vertical axis wind turbine are respectively provided with a surface turbulent flow plate, one side of each surface turbulent flow plate is fixedly connected with a support main rod, and a rocker rod is connected to each surface turbulent flow plate. When the rotating speed of a wind wheel reaches a limit value, the surface turbulent flow plates are coincident with and cover the support main rod; and when the rotating speed of the wind wheel is more than the limit value, the surface turbulent flow plates are in a state that the rocker rods are supported to generate larger resistance to ensure that the rotating speed of the vertical axis wind turbine is reduced. The invention also provides a bracket comprising the turbulent flow device of the vertical axis wind turbine, and the vertical axis wind turbine. According to the invention, operation speed of the vertical axis wind turbine during heavy wind can be reduced, and wind energy utilization safety is improved.

Description

technical field [0001] The invention relates to the field of wind energy applications, in particular to a vertical axis wind turbine spoiler, a bracket and a vertical axis wind turbine. Background technique [0002] At present, vertical axis wind turbines mainly have three structural types: S-type, Φ-type and H-type. like figure 1 As shown, taking an H-type vertical axis wind turbine as an example, the wind rotor of the vertical axis wind turbine includes a rotating shaft 101 , blades 102 and a bracket 103 ; The lower end of the rotating shaft 101 of the vertical axis wind turbine can be connected with the generator, and the vertical axis wind turbine receives incoming wind, converts wind energy into electrical energy and outputs it to the generator. When the wind is strong, the rotation speed of the vertical axis wind turbine increases, and the output power of the wind turbine increases significantly. If the rotating speed is too high, the structure of the vertical axis ...

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Problems solved by technology

[0003] The inventor found in practice that the blades 102 of the vertical axis wind turbine are vertically arranged and have a fixed-pitch structure. During the rotation of the wind rotor of the vertical axis wind turbine, the angle of attack of the blades 102 is difficult to control. The structure cannot reduce the running speed of the wind rotor in strong winds, which may easily cause damage to the vertical axis wind turbine, and the use safety of the vertical axis wind turbine is not high

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