A device for anti-twisting and breaking of outgoing cables of miniature horizontal axis wind turbines

Abstract

The invention relates to an outgoing cable twisting-off prevention device of a miniature horizontal shaft wind generating set. The outgoing cable twisting-off prevention device comprises a draught fan body, a supporting shaft and a supporting rod. The supporting shaft is arranged in a hole of the draught fan body in a sleeved manner. The lower portion of the supporting shaft and the supporting rod are fixed through bolts, flat washers and self-locking nuts. The upper portion of the supporting shaft is fixedly provided with a cable fixing sleeve in an interference mounting manner. An outgoing cable penetrates a center hole of the cable fixing sleeve and a center hole of the supporting shaft to be connected with a cable of the supporting rod. An upper sealing bearing and a lower sealing bearing are fixed to the upper end and the lower end of the supporting shaft in an interference mounting manner correspondingly, and meanwhile an upper bearing, a lower bearing and a torsional spring are sequentially mounted at the position, between the upper sealing bearing and the lower sealing bearing, of the supporting shaft in an interference mounting manner. The upper bearing is pressed in an upper ring in an interference manner, and the lower bearing is pressed in a lower ring in an interference manner. The outgoing cable twisting-off prevention device has the beneficial effects of being simple in structure, low in production cost, safe and reliable, and the phenomenon that the cable is twisted off can be effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment safety, and in particular relates to an anti-twist breakage device for leading out cables of a miniature horizontal axis wind power generating set. Background technique [0002] Miniature horizontal axis wind turbines work in a natural environment. Because the natural wind changes randomly, the blades of the wind turbine always face the windward side with the change of wind direction. At present, most micro wind turbines use carbon brushes and slip rings to solve the problem. The problem of twisting of the lead-out cable. Due to sudden changes in the natural wind direction and wind speed, the wind turbine vibrates strongly, and the elastic force of the spring recovers slowly, resulting in poor contact between the brush and the electric slip ring, resulting in ignition and burning damage, which affects the normal operation of the wind turbine. Unit fails. [0003] as attached figure...

AI Technical Summary

Problems solved by technology

[0004] However, when there is a strong wind and the wind direction is extremely unstable, it will cause strong vibration of the generator. Once the contact surface of the carbon brush 25 and the slip ring 27 is in poor contact, and the elastic force of the spring cannot be restored in time, the generator will be damaged in a short time. An arc is generated inside, and the insulating material of the carbon brush 25 and the slip ring 27 will burn out, resulting in a short circuit of the generator, thereby causing the wind turbine to fail

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