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Assembled low-gravity-center efficient vertical shaft wind turbine

A low-center-of-gravity, vertical-axis technology, applied in the field of wind power generation equipment, can solve the problems of reducing the weight of the wind rotor, airflow 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 airflow Effect

Active Publication Date: 2014-07-16
宁夏同心山泰钢结构有限公司
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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 blades; (2) The interlayer support structure is not optimized enough, resulting in its unit weight 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 Increasing the strength will inevitably increase the weight of the wind rotor, which makes the wind rotor unable to be enlarged; (4) It is impossible to realize the power control of the wind turbine

Method used

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  • Assembled low-gravity-center efficient vertical shaft wind turbine
  • Assembled low-gravity-center efficient vertical shaft wind turbine
  • Assembled low-gravity-center efficient vertical shaft wind turbine

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Experimental program
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Effect test

Embodiment 1

[0065] In this embodiment, the assembled low-gravity high-efficiency vertical axis wind turbine is as follows: Figure 1 to Figure 4 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 distributed on the periphery of the wheel frame 3; the blades include a group of alternately spaced first blades 4 and second blades 4-1; the first and second blades 4, 4-1 are respectively It is a vertically extending streamlined cross-section blade, the first blade 4 has an outward blade surface and an inward blade surface which are respectively convex and asymmetrically distributed on both sides of the blade chord; the second blade 4-1 The outer blade surface is concave and the inner blade surface is convex;...

Embodiment 2

[0073] In this embodiment, the assembled low-gravity high-efficiency vertical axis wind turbine is as follows: Figure 12 to Figure 17 Shown, its basic structure is identical with embodiment 1, and difference is only in:

[0074] (1) This embodiment adopts a single-layer structure formed by a connection frame 7 and a transmission frame 6 .

[0075] (2) A controller 12 for turning the angle of the blade is provided between the part of the fixing part 8 close to the blade 4-1 and the spokes of the transmission frame 6 or the connection frame 7 .

[0076] (3) if Figure 17 As shown, the transmission frame 6 is triangular as a whole.

[0077] (4) The connecting frame 7 has only one structural form, which is the same as Figure 8 Same as shown.

[0078] (5) The structure of the fixing part 4-2 is the same as that of the fixing part 8, both of which are the same as Figure 11 Same as shown.

Embodiment 3

[0080] In this embodiment, the assembled low-gravity high-efficiency vertical axis wind turbine is as follows: Figure 18 to Figure 23 Shown, its basic structure is identical with embodiment 1, and difference is only in:

[0081] (1) This embodiment adopts a double-layer structure formed by two connecting frames 7 and one transmission frame 6 .

[0082] (2) The connecting frame 7 has only one structural form, which is the same as Figure 8 Same as shown.

[0083] (3) The structure of the fixing part 4-2 is the same as that of the fixing part 8, both of which are the same as Figure 11 Same as shown.

[0084] (4) Telescopic controllers 12 for rotating the angle of the blades are respectively provided between the parts of the fixing part 4-2 and the fixing part 8 close to the blade 4-1 and the spokes of the transmission frame 6 or the connecting frame 7 .

[0085] In addition, if Figure 22 As shown, the rotation connection point between the fixed piece and the transmission...

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Abstract

The invention relates to an assembled low-gravity-center efficient vertical shaft wind turbine which comprises a fixed tower for with the determined vertical rotation axis and wind wheels supported on the tower. Each wind wheel comprises a wheel frame and blades distributed on the periphery of the wheel frame. The blades include the first blades and the second blades, and the first blades and the second blades are alternately distributed at intervals and are vertically-extending blades with streamline-shaped cross sections respectively. Each wheel frame comprises a set of spokes which are evenly distributed in the circumference direction, horizontally extend and correspond to each other in an up-and-down mode, the outer ends of the spokes corresponding to each other in the up-and-down mode are connected with the corresponding upper portions and the corresponding lower portions of the first blades respectively in a fixed or rotary mode, and the middles of the spokes corresponding to each other in the up-and-down mode are connected with the corresponding upper portions and the corresponding lower portions of the second blades respectively in a fixed or rotary mode. By means of the assembled low-gravity-center efficient vertical shaft wind turbine of the structure, the wind energy use performance of the first blades can be effectively developed, the starting torque of the assembled low-gravity-center efficient vertical shaft wind turbine can be further improved through the second blades, and the low-speed wind energy use performance of the low-wind-speed blades is effectively developed.

Description

technical field [0001] The invention relates to a vertical-axis wind turbine, in particular to a combined type low-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 m / s region does not operate economically well. 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...

Claims

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Application Information

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IPC IPC(8): F03D1/02F03D1/06F03D11/04
CPCY02E10/72Y02E10/728Y02E10/74
Inventor 庞兵李宏春程钰周宇李锋
Owner 宁夏同心山泰钢结构有限公司
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