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Support rod of vertical axis wind turbine

A technology for supporting rods and wind turbines, which is applied to wind turbines, wind turbines and motors at right angles to the wind direction, etc., can solve the problems of power consumption, increased maintenance costs, and expensive magnetic levitation devices, and can simplify the structure, reduce production and cost. Maintenance cost, effect of improving aerodynamic performance

Inactive Publication Date: 2010-08-04
申振华
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem is that the magnetic levitation device is expensive, and the complex structure will inevitably lead to an increase in maintenance costs; and the entire operation process consumes electricity, which further offsets its beneficial effects

Method used

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  • Support rod of vertical axis wind turbine
  • Support rod of vertical axis wind turbine
  • Support rod of vertical axis wind turbine

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Embodiment Construction

[0020] refer to figure 1 , a common wind turbine rotor consists of a blade 1, a support rod 2, a rotating shaft 3, a hub 4 and a bearing 5. Under the action of the wind, the wind turbine rotates in the direction shown in the figure. The blade 1 is the only part of the wind turbine that does work. The number of blades 1 can be two, three, four or more. Each blade 1 can have one, two or three support rods 2, depending on the requirements of blade strength and deformation. The support rod 2 and the hub 4 are used to bear the aerodynamic force, gravity and inertial force, etc. generated by the wind turbine blade 1 in a static or moving state, and transmit these forces to the bearing 5 through the rotating shaft 3, and drive the generator (not shown in the figure) Shown) rotates to generate electricity. The cross-sectional shape of the support rod 2 can be a circle, an ellipse, a rectangle or an airfoil shape.

[0021] refer to figure 2 , is another common H-type vertical a...

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Abstract

The invention relates to a support rod of a vertical axis wind turbine. A transverse section of the support rod is selected from a symmetrical wing section or a bending thick wing section with high lift drag ratio; differing from a horizontal installing state of the transverse section of a common support rod, the wing section of the transverse section of the support rod is in a positive attack-angle installing state, and the attack angle is controlled within 0.1 to 12.5 degrees so that the support rod works under the optimum lift drag ratio state, therefore, the lift force as large as possible can be generated in a simpler mode compared with a magnetic suspension technology, the load and the frictional force of a rotor bearing are further reduced, not only the structure is simplified, but also the starting wind speed of the wind turbine is reduced, the aerodynamic property of the wind turbine is improved without consuming extra energies, the service life of the bearing is prolonged, and the manufacturing and maintaining cost of the wind turbine is reduced.

Description

technical field [0001] The invention relates to a support rod of a vertical axis wind power machine, specifically a support rod airfoil of a vertical axis wind power machine and its installation requirements, and belongs to the field of design, manufacture and application of the vertical axis wind power machine. Background technique [0002] Wind turbines are divided into horizontal axis and vertical axis, and vertical axis wind turbines are divided into lift type and drag type. The lift type vertical axis wind turbines include the usual Darrieux wind turbine and H-type wind turbine. For a long time, because the vertical axis wind turbine (VAWT) is much more complicated than the horizontal axis wind turbine (HAWT) in terms of aerodynamics, and the development of computer technology and computational fluid dynamics is not yet mature, it is impossible to analyze the complex aerodynamics. Therefore, the current state of technological development is still in its infancy. The ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D3/06
CPCY02E10/74Y02P70/50
Inventor 申振华
Owner 申振华
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