Vertical axis wind turbine brake device

Abstract

The invention provides a vertical axis wind turbine brake device, wherein one end of a rotary shaft of a spoiler is connected with a support of a vertical axis wind turbine, the other end of the rotary shaft of the spoiler is articulated with the spoiler, and the profile shape of the spoiler is a symmetrical wing shape; when wind force is smaller, the spoiler can be used for rotating around the rotary shaft of the spoiler until the profile axial line is parallel to the horizontal plane without influencing the normal operation of the vertical axis wind turbine; and when the wind force is greater, the spoiler can be used for rotating until the profile axial line is vertical to the horizontal plane, the frontal area is increased, and greater resistance is generated, thus the vertical axis wind turbine slows down. The brake effect can be achieved without the mutual effect of machinery, the vertical axis wind turbine is ensured to brake safely, and the service life of the brake device is prolonged.

Description

technical field [0001] The invention relates to the field of wind energy applications, in particular to a braking device for 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. Such as figure 1 As shown, taking an H-type vertical-axis wind turbine as an example, the vertical-axis wind turbine includes a rotating shaft 1 , blades 2 and a bracket 3 ; wherein, each blade 2 and the rotating shaft 1 are fixedly connected to the bracket 3 . [0003] The lower end of the rotating shaft 1 of the vertical axis wind turbine can be connected with a generator, and the vertical axis wind turbine can receive wind and convert wind energy into electrical energy for output to the generator. When the wind is strong, the speed of the vertical axis wind turbine increases accordingly, and the output power of the wind turbine increases significantly. If the rotating speed is too high,...

AI Technical Summary

Problems solved by technology

[0004] The inventor found in practice that since the brake disc clamps the brake disc, the vertical axis wind turbine will stop instantly when it decelerates, and its inertia will generate a large impact force, which will affect the blades 2 and brackets 3 of the vertical axis wind turbine. etc. cause a large impact load, resulting in damage to the vertical axis wind turbine

Moreover, the direct contact between the brake disc and the brake pad will cause great friction, and long-term use will cause damage to the brake disc and brake pad.

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