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Feather type vertical shaft wind wheel

A vertical axis, variable pitch technology applied to vertical axis wind rotors. It can solve the problems of difficulty in self-starting and high resistance torque, and achieve the effects of enhancing performance, enhancing adaptability to harsh weather environments, and extending effective operating time

Inactive Publication Date: 2010-07-14
HOHAI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Finally, when the lift-type blades of the vertical axis wind turbine are stationary and the air flows through them, due to the separation phenomenon of the air flow, the resistance torque is relatively high, and it is difficult to start by itself.

Method used

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  • Feather type vertical shaft wind wheel

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings. Such as figure 1 As shown, the present invention is a vertical axis wind wheel, including a wind wheel shaft 1, two or more pairs of blade brackets 2 are installed on the wind wheel shaft 1, and straight blade lift type blades 3 are arranged between each pair of brackets 2. Along the chord length direction of the blade airfoil, the trailing edge of the blade is fixed on the blade rotating shaft 4 , and a blade pitch controller 5 is arranged at both ends of the blade rotating shaft 4 . The blade pitch control device 5 includes a positioning plate, a blade return spring 6 and a positioning pin 11, and the positioning pins 11 are arranged on the circumference of the positioning plate, and there are at least three. In this embodiment, there are three positioning pins 11, They are respectively set at three positions of blade pitch angles of 0°, 90° and 180°. The blade pit...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74
Inventor 赵振宙郑源赵振宁
Owner HOHAI UNIV
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