A vertical-axis resistance wind turbine with automatically retractable wing arms

Abstract

The invention relates to a wing arm automatically-telescopic type vertical axis resistance type wind turbine which is composed of blades, a blade rotating shaft, a gear, a rack, a guide rail, a sliding block, a bearing block, a sliding block limiting buffer, a fixing plate, a wind turbine rotating support, a wind turbine rotating shaft and the like. The rotating shaft is arranged on the side edges of the resistance type blades, and the paired blades are linked through the gear, the rack, the guide rail and the sliding block; when the blades reach a certain wind facing angle in a wind field, action force of wind compels the blades to rotate around the rotating shaft of the blades, concave faces of the resistance type blades are opened, and the convex faces are folded; meanwhile, the rotating shaft of the blades moves synchronously along with the sliding block on the guide rail by a certain distance, wing arms of the concave faces of the blades are unfolded automatically, wing arms of the convex faces of the blades automatically retract, and resistance and resistance arms are reduced while driving force and force arms of the wind turbine are reduced. The states of the blades are alternatively changed along with rotation of the wind turbine, the driving moment of the wind turbine is effectively improved, and the resistance moment is reduced. The wind turbine is formed by combining basic units, and mechanical energy is output through a wind turbine rotating shaft.

Description

technical field [0001] The invention relates to the field of vertical axis wind turbines, in particular to a vertical axis drag wind turbine with automatically retractable wing arms. Background technique [0002] Wind turbines can be divided into two categories: horizontal axis wind turbines and vertical axis wind turbines according to the geometric relationship between their rotation axis and the horizontal plane, and vertical axis wind turbines can be divided into lift type and drag type according to the working principle of wind turbine blades. . Vertical-axis lift blades generate lift under the action of wind force and form the rotational torque of the wind turbine, which is characterized by a high utilization rate of wind energy, but requires a high start-up wind speed, and is only suitable for use in areas rich in wind energy resources; resistance type blades rely on the blades to The resistance generated by the wind and its reaction force pushes the wind turbine to r...

AI Technical Summary

Problems solved by technology

The vertical axis lift type blades generate lift under the action of wind force and form the rotational torque of the wind turbine, which is characterized by a high utilization rate of wind energy, but requires a high starting wind speed, and is only suitable for use in areas rich in wind energy resources; resistance type blades rely on the blades to The resistance generated by the wind, and its reaction force pushes the wind turbine to rotate. It is characterized by low utilization rate of wind energy, but its starting wind speed is small and the torque generated is large. It is suitable for use in areas where wind energy resources are not abundant.

Images