Blade automatically-opening/closing device of vertical-axis wind-driven generator wind wheel

Abstract

The invention discloses a blade automatically-opening / closing device of a vertical-axis wind-driven generator wind wheel, which comprises the wind wheel. The wind wheel comprises blades; the number of the blades is plural; the blades are hinged with the wind wheel, wherein rotating devices and positioning devices are arranged at hinging parts of the blades and the wind wheel; the rotating devices enable the hinging parts of the blades and the wind wheel to axially rotate; and the positioning devices lock rotating angles of the blades. The blade automatically-opening / closing device further comprises a control device, wherein the control device is respectively connected with the rotating devices and the positioning devices. The blade automatically-opening / closing device of the vertical-axis wind-driven generator wind wheel has the beneficial effects that: the blades of the wind-driven generator wind wheel can be automatically opened or closed according to a wind speed, the wind wheel is of a cylinder after the blades of the wind wheel are closed, so that the wind area is small, and the wind wheel is protected from being damaged when the wind speed is too fast.

Description

technical field [0001] The invention relates to a control device for a wind rotor blade of a vertical axis wind power generator, in particular to an automatic opening and closing device for a wind rotor blade of a vertical axis wind power generator. Background technique [0002] Convert the kinetic energy of the wind into mechanical kinetic energy, and then convert the mechanical energy into electrical kinetic energy, which is wind power generation. The principle of wind power generation is to use the wind to drive the blades of the windmill to rotate, and then increase the speed of rotation through the speed increaser to drive the generator to generate electricity. According to the current windmill technology, electricity can be generated at a breeze speed of about three meters per second. Wind power generation is becoming an upsurge in the world, because wind power generation does not need to use fuel, nor will it produce radiation or air pollution. It is an environmental...

AI Technical Summary

Problems solved by technology

Known wind generators are generally divided into horizontal axis wind generators and vertical axis wind generators. Horizontal axis wind generators are greatly affected by changes in wind direction. Generally, wind wheel steering devices must be installed to adapt to changes in wind direction, making their mechanical structures complex. , and there is energy loss in the process of turning the wind rotor

Vertical axis wind turbines are less affected by changes in wind direction and have a higher utilization rate of wind energy. However, due to their higher utilization rate of wind energy, they have higher requirements on the structural strength of the wind rotor, and are easily damaged when the wind force is too strong.

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