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Low center of gravity and high efficiency vertical axis wind turbine

A vertical axis, low center of gravity technology, applied in the field of wind power generation equipment, can solve the problems of reducing the weight of the wind rotor, large air flow interference, low strength and stiffness, etc., to reduce the weight of the wind rotor, easy to start and rotate the wind rotor, and avoid disturbing the air flow Effect

Active Publication Date: 2017-01-11
铜陵尚东高新科创有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical solution still has the following major disadvantages: (1) the interlayer support components are too bulky, which greatly interferes with the airflow and affects the wind energy utilization performance of the blade; The internal strength and rigidity are relatively low, and a large weight is still required to achieve the expected strength and rigidity, which is not conducive to reducing the weight of the wind rotor; (3) The structural strength of the bearing structure between the wheel frame and the main shaft of the wind rotor is poor, but for Improving the strength will inevitably increase the weight of the wind rotor, which makes the wind rotor unable to be enlarged; (4) The power control of the wind turbine cannot be realized

Method used

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  • Low center of gravity and high efficiency vertical axis wind turbine
  • Low center of gravity and high efficiency vertical axis wind turbine
  • Low center of gravity and high efficiency vertical axis wind turbine

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Experimental program
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Embodiment 1

[0090] The low-center-of-gravity and high-efficiency vertical-axis wind turbine in this embodiment is as follows: Figure 1 to Figure 3 As shown, it includes a fixed tower 1 that determines the vertical axis of rotation and a wind wheel 2 supported on the tower 1, and the wind wheel 2 and the tower 1 constitute a horizontal rotation pair that is axially constrained; the wind wheel 2 includes a center of rotation supported on The wheel frame 3 of the tower 1, and the blades 4 distributed around the wheel frame 3; the blades 4 are streamlined section blades extending vertically, and the blades 4 have convex shapes and are asymmetrically distributed on both sides of the blade chord. The outer blade surface and the inner blade surface of the side; the wheel frame 3 includes a group of spokes that are uniformly distributed in the circumferential direction and extend horizontally and correspond to the upper and lower sides, and the outer ends of the spokes corresponding to the upper ...

Embodiment 2

[0096] The low-center-of-gravity and high-efficiency vertical-axis wind turbine in this embodiment is as follows: Figure 8 to Figure 14 As shown, its basic structure adopts the non-spindle structure similar to embodiment 1, in addition:

[0097] The middle part of the transmission frame 6 and the middle part of the connection frame 7 are squares with the same shape and each corresponding side is parallel to each other; the support member 11 includes a straight bar 11-1 fixed to each corresponding vertex of the regular polygon in the middle part of the transmission frame 6 and the connection frame 7, and the straight bar 11 There is also a diagonal brace 11-2 between -1 and the two sides of the apex.

Embodiment 3

[0099] The low-center-of-gravity and high-efficiency vertical-axis wind turbine in this embodiment is as follows: Figure 15 to Figure 21 As shown, its basic structure adopts the non-spindle structure similar to embodiment 1, in addition:

[0100] (1) This embodiment adopts a single-layer structure formed by one connection frame 7 and one transmission frame 6 .

[0101] (2) A connecting rod 10-8 is also provided between adjacent bearing arms 10-3 of the truss 10.

[0102] (3) The transmission frame 6 middle part and the connecting frame 7 middle part are regular pentagons with the same shape and each corresponding side is parallel to each other; the support member 11 is a straight rod that is fixedly connected to the transmission frame 6 and the connecting frame 7 middle parts of the regular polygon.

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Abstract

A low-center-of-gravity high-efficiency vertical-axis wind turbine comprising a fixed tower (1) determining a vertical axis of rotation and a wind rotor (2) supported on the tower (1). The wind rotor (2) and the tower (1) constitute an axially constrained horizontal rotary set. The wind rotor (2) comprises a rotor frame (3) having the center of rotation thereof supported on the tower (1) and blades (4) distributed around the rotor frame (3). The blades (4) are vertically-extending streamlined cross-sectional blades. The blades (4) are convex on both sides and are asymmetrical airfoils. The rotor frame (3) comprises a set of spokes that are uniformly distributed in the circumferential direction, horizontally extended, and up-down corresponding. The outer extremities of the up-down corresponding spokes respectively are either fixedly connected or rotatably connected to upper and lower corresponding parts of the blades (4). Dedicated blades specifically designed for an unsteady flow field around the vertical-axis wind turbine are employed, and, wind energy utilization performance of the blades is effectively brought into play.

Description

technical field [0001] The invention relates to a vertical-axis wind turbine, in particular to a low-center-of-gravity high-efficiency vertical-axis wind turbine, which belongs to the technical field of wind power generation equipment. Background technique [0002] As far as the applicant knows, most of the wind turbines used in the current market are horizontal-axis turbine wind turbines with the rotor shaft placed horizontally, which belong to the category of high-wind-speed wind turbines. Average wind speed The economic performance of the region is not good. In addition, this type of wind turbine is noisy and produces infrasonic waves, which is not suitable for use in cities and communities, and it will also endanger the living environment of birds. [0003] In addition, there are vertical axis wind turbines, which are characterized by no wind direction requirements, low noise, and no infrasonic waves. Compared with horizontal-axis wind turbines, vertical-axis wind tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D3/00F03D3/06
CPCF03D3/06Y02E10/74
Inventor 李锋李宏春
Owner 铜陵尚东高新科创有限公司