Blade-autorotation windmill

Abstract

The invention relates to a blade-autorotation windmill. The windmill provided by the invention comprises a blade, a tower frame, a base and a power generator, and is characterized by also comprising a blade autorotation controlling mechanism arranged on the top of the tower frame, a hub arranged in the blade autorotation controlling mechanism and a direction regulating device arranged on a tower frame body, wherein the direction regulating device drives the blade autorotation controlling mechanism to rotate to be in a wind force balanced state by virtue of a rotary sleeve; and the blade drives an upright shaft to rotate so as to perform power generation by virtue of the hub, the blade autorotation controlling mechanism controls the blade to autorotate in a complete revolution process, theblade at a downwind side is vertical to the wind direction, and the blade at a headwind side is parallel to the wind direction. The windmill provided by the invention is scientific and reasonable in structural design, and as the large-area plane blade is adopted, greater wind energy can be obtained at a low-wind-velocity region; the wind energy utilization ratio is high; and the windmill providedby the invention can be used not only in a high-wind-velocity region but also in the low-wind-velocity region and is wide in application range and wide in application prospect.

Description

technical field [0001] The invention belongs to a wind power generating device, in particular to a windmill with self-rotating blades. Background technique [0002] At present, the development and application of wind power and other green energy sources are increasingly becoming the mainstream. Most of the existing wind power generation devices are composed of blades, towers, bases, and generators. A tower is installed on the base, and a group of blades are installed on the upper end of the tower. The rotation of the blades drives the rotation of the shaft, so that the generator connected to the shaft generate electricity. In the existing wind power generation device, the blades can only revolve around their rotating shafts, but the direction of the blades cannot be adjusted according to the direction of the wind, and the wind wheel cannot work on the maximum windward surface all the time. Moreover, Existing wind power generation devices need relatively high wind speed to ...

AI Technical Summary

Problems solved by technology

In the existing wind power generation device, the blades can only revolve around their rotating shafts, and the direction of the blades cannot be adjusted according to the direction of the wind. The wind wheel cannot work on the maximum windward side all the time. Moreover, Existing wind power generation devices require relatively high wind speeds to be driven, and are suitable for areas with high wind speeds

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