Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine

A technology of auxiliary blades and vertical shafts, applied in the field of wind turbines, can solve the problems of low wind energy utilization efficiency and poor start-up performance of lift-type wind turbines, and achieve the effects of improving wind energy utilization efficiency, scientific and reasonable wind energy utilization, and high degree of automation

Active Publication Date: 2014-09-03
NORTHEAST AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to improve the problems of low wind energy utilization efficiency and poor startability of lift-type wind turbines at high rotational speeds of drag-type wind turbines

Method used

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  • Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine
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  • Flexible and retractable auxiliary blade mechanism of vertical-axis wind turbine

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Embodiment Construction

[0013] A flexible and retractable auxiliary blade mechanism for a vertical axis wind turbine, in which an upper flange 4 and a lower flange 3 are sequentially fixed on a main shaft 1 from top to bottom, and fixed on the upper flange 4 and lower flange 3 respectively The upper beam 5 and the lower beam 2 are respectively fixed with main blades 6 on the outer ends of the upper and lower beams 5 and 2, and are located between the main blade 6 and the main shaft 1 on the sides of the upper and lower beams 5 and 2. The auxiliary blade 7 is fixedly fitted at the middle part, and a cylindrical hole is vertically opened at the maximum thickness part of the auxiliary blade 7. Fixing bolts 14 and bearing sleeves 16 are respectively fixed in sequence on the upper and lower sides, and the fixed shafts 18 of the fixed bearings 17 are respectively inserted and fixed on the two sides of the upper and lower beams 5 and 2, and the fixed shafts 18 are mated in the In the cavity of the bearing s...

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Abstract

The invention discloses a flexible and retractable auxiliary blade mechanism of a vertical-axis wind turbine and belongs to wind turbines. According to the flexible and retractable auxiliary blade mechanism of the vertical-axis wind turbine, an auxiliary blade is assembled on an upper beam and a lower beam of the vertical-axis wind turbine and located between a main blade and a main shaft, a flexible auxiliary blade provided with a rigid balance weight bar is connected to the auxiliary blade through a coiling block, a dead bolt, a torsion spring, a bearing sleeve, a bearing and a fixed shaft are assembled in the coiling block, the fixed shaft is fixedly installed on the upper beam and the lower beam, a reel and a planar volute spiral spring are assembled on the upper beam and the lower beam, the two ends of a stay cord are connected to the rigid balance weight bar and the reel, and then the flexible and retractable auxiliary blade mechanism is formed. The flexible and retractable auxiliary blade mechanism is novel in structural design, scientific and reasonable in utilization of wind energy, high in adaptability, reliable in use and high in automation degree.

Description

technical field [0001] The invention belongs to wind power machines, and relates to a flexible and telescopic auxiliary blade mechanism assembled on a vertical axis wind power machine. Background technique [0002] Vertical axis wind turbines can be divided into drag type and lift type according to their working principle. Among them, Savnious wind turbine and Darrieus wind turbine are typical representatives of drag and lift wind turbines respectively. The drag type wind turbine has good startability, but the wind energy utilization efficiency is low at high tip speed ratio, and the lift type wind turbine has high wind energy utilization efficiency at high tip speed ratio, but poor startability, especially under low wind speed conditions It is difficult to realize self-starting. In order to solve the contradiction between the startability of the vertical axis wind turbine and the efficiency of wind energy utilization, a large number of researchers have studied it. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74
Inventor 李岩和庆斌吴志诚白音巴特尔白荣彬
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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