Braking system for vertical axis wind turbine and wind turbine

Abstract

The invention provides a braking system for a vertical axis wind turbine and the wind turbine. The vertical axis wind turbine comprise a generator system, fan blades or a wind wheel, as well as a rotating component, an annular horizontal track, a track supporting component and a braking system which are arranged on the blades or the wind wheel. The vertical axis wind turbine is characterized in that the annular horizontal track is fixedly installed on the track supporting component, the wind wheel or the blade is provided with a wind wheel rotating component, the wind wheel rotating componentis supported on the annular horizontal track, and the brake system is arranged at the position, corresponding to the annular horizontal track, of the wind wheel rotating component or the annular horizontal track or the wind wheel or the blade. Under the condition of the same braking force, the braking torque is greatly improved, the better braking effect is achieved, the braking problem in strongwind is solved, and the safety and reliability of the vertical-axis wind turbine are improved.

Description

technical field [0001] The invention belongs to the technical field of wind energy utilization, in particular to a braking system for a vertical axis wind power generator. Background technique [0002] Vertical axis fan is the abbreviation of vertical axis wind turbine or vertical axis wind generator. It refers to the wind turbine or wind generator whose rotation axis is perpendicular to the ground or the direction of incoming flow. Since wind turbines are used in severe weather conditions, in order to resist strong typhoons, usually the wind turbines need to have a braking (braking) function. In the existing large horizontal axis wind turbines, disc or brake brakes are usually used. The axis of the brake disc or the brake disc is parallel to the ground, but because the horizontal axis fan can adopt yaw in strong wind to reduce the windward area, and the inherent high speed and low torque characteristics of the horizontal axis wind wheel make the horizontal axis fan under t...

AI Technical Summary

Problems solved by technology

The wind turbine realizes braking through the brake device connected with the vertical shaft of the wind wheel, the brake arm or the brake disc controlled by the brake solenoid valve, the friction plate; the safety pin and the safety pin solenoid valve controlling the safety pin. Purpose, its shortcoming is that the brake device is set on the shaft of the wind rotor or the shaft of the generator. Since the radius of the shaft of the wind rotor or the shaft of the generator is much smaller than the sweeping radius of the wind rotor, the gap is too large, and the braking torque is much smaller than that of the wind rotor. Therefore, it is difficult to achieve the effect of braking when used in harsh weather conditions, and it is easy to cause a speeding situation

Similarly, Chinese Patent Application No. 201520091296.2 discloses a braking mechanism for vertical-axis wind turbines. The disadvantage is that the brake device is connected to the lower end of the wind wheel hub and is sleeved outside the tower pole of the vertical-axis wind turbine, making it difficult to achieve the braking effect. , it is easy to cause the situation of flying car

Similarly, Chinese patent application No. 201110036696.x discloses a mechanical transmission system of a super-large vertical axis wind power generation device. The braking device is arranged on the central gear, but the disadvantage is still that the braking torque is far smaller than the rotation of the wind wheel. Torque, therefore, it is difficult to achieve the effect of braking when used in severe weather conditions

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