Feather type vertical shaft wind wheel

A vertical-axis, pitch-variable technology applied to vertical-axis wind rotors. It can solve problems such as high resistance torque and difficulty in self-starting, and achieve the effects of enhancing performance, enhancing adaptability to harsh weather environments, and prolonging effective running time.
CN101776041BInactive Publication Date: 2012-05-09HOHAI UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2012-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a feather type vertical shaft wind wheel, comprising a wind wheel shaft, and two or more pairs of blade brackets arranged on the wind wheel shaft; a blade rotating shaft is fixed between the ends of each pair of blade brackets; a circular arc-shaped blade is fixed on the blade rotating shaft; the tail end of the blade bracket is provided with a blade pitch control device; the blade pitch control device comprises a positioning disc, a blade return spring and positioning dowels; the positioning dowels are arranged in the periphery of the positioning disc and the number of which is at least three; one end of the blade return spring is connected with the blade bracket; the other end of the blade return spring is connected onto the circular arc-shaped blade which is provided with a positioning slot; the circular arc-shaped blade is positioned on different positioning dowels on the positioning disc through the trough under the action of the blade return spring. Compared with the prior art, the invention realizes the starting and efficient running of the wind wheel, and keeps functional transmission of the rated wind speed running under strong wind and fierce wind.
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Description

technical field

[0001] The invention belongs to the technical field of wind power generation, in particular to a vertical axis wind wheel. Background technique

[0002] At present, the wind turbines on the market are mainly horizontal-axis wind turbines. The development of horizontal-axis wind turbines is relatively mature and the application range is relatively wide. In comparison, the development of vertical axis wind turbines is relatively slow. However, compared with the horizontal axis wind turbine, the vertical axis wind turbine has many advantages that the horizontal axis wind turbine cannot match, such as: the lift type vertical axis wind wheel rotates slowly and the noise is low; the generator can be placed on the ground for easy maintenance; No headwind, no yaw power loss, etc. Because of these advantages, the development of vertical axis wind turbines is gradually being valued. However, due to the short development history of vertical axis wind turbines, many te...

Claims

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