Speed-increasing wingspan type vertical axis wind turbine

Abstract

The invention discloses a speed-rising wingspan type vertical axis wind turbine. The speed-rising wingspan type vertical axis wind turbine comprises a wind wheel, a speed-increasing system, a tower, a rotary disc, a rotary ring, a tower support platform and a control system. The wind wheel comprises vanes, a quadrilateral linkage mechanism and a fulcrum bar mechanism, wherein one end of the quadrilateral linkage mechanism is fixedly connected with the lateral surfaces of the vanes, the other end of the quadrilateral linkage mechanism is hinged to the lateral surface of the rotary disc, the fulcrum bar mechanism is formed by two fulcrum bars hinged to each other, one end of the fulcrum bar mechanism is hinged to the quadrilateral linkage mechanism, and the other end of the fulcrum bar mechanism is hinged to the rotary ring; the speed-increasing system comprises a hydraulic cylinder and a piston rod, the hydraulic cylinder is hinged to the lower end of the rotary disc, and one end of the hydraulic cylinder is hinged to the hinged position of the two fulcrum bars. When the rotating speed of the wind wheel is lower, oil feeding is carried out in a rodless cavity of the hydraulic cylinder, and oil returning is carried out in a rod cavity of the hydraulic cylinder; when the rotating speed of the wind wheel is higher, oil feeding is carried out in the rod cavity of the hydraulic cylinder, and oil return is carried out in the rodless cavity of the hydraulic cylinder. The speed-rising wingspan type horizontal axis wind turbine can make up the disadvantages of easiness in stall, low wind power utilization rate and unstable power generation of a vertical axis wind turbine and have the advantages that the structure is simple and compact, the rotating speed is adjustable, the noise interference is low, the braking is stable, and the applicability is broad.

Description

technical field [0001] The invention relates to a wind power generator, in particular to a speed-increasing wingspan type vertical axis wind power generator. Background technique [0002] With the continuous development of society, the energy problem will become one of the problems that human beings must solve in the future, and the renewable energy structure will become one of the tendencies of future energy. As a non-polluting renewable energy, wind energy has attracted people's attention. [0003] As an important device that converts wind energy into mechanical energy and electrical energy, wind turbines can be divided into horizontal axis wind turbines and vertical axis wind turbines according to the direction of their rotation axis. At present, horizontal axis wind turbines are widely used. However, horizontal axis wind turbines have the following disadvantages: 1) The impeller is not uniformly exposed to the wind, and the blades installed in the air have to bear the ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantages of vertical axis wind turbines in the prior art that are prone to stall and low utilization rate of wind energy, the present invention provides a speed-increasing wingspan type vertical axis wind turbine

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