CN214577515U

CN214577515U - Lift force wind collecting cover for wind driven generator and horizontal shaft wind driven generator

Info

Publication number: CN214577515U
Application number: CN202120922539.8U
Authority: CN
Inventors: 陈文鹏; 刘明
Original assignee: Qingdao Shangyue Intelligent Industry Co ltd
Current assignee: Chen Wenpeng
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2021-11-02
Anticipated expiration: 2031-04-30

Abstract

The utility model relates to a lift air collecting cover for aerogenerator, including the air collecting cover body, be provided with in the outside of air collecting cover body and be used for providing the lift board of perpendicular ascending lift for the air collecting cover body under windy condition. Under windy conditions, when wind passes through the lifting plates, the lifting plates generate vertical lifting force, the lifting force generates moment relative to the supporting rod entry site of the wind driven generator, and the moment is opposite to destructive moment generated by wind resistance, so that the destructive moment is partially or completely counteracted. This design is through setting up the lifter plate in the wind-collecting cover outside, can partially or totally offset owing to use wind power generation wind-collecting cover and the destructive moment to the bracing piece that conventional windage brought to the manufacturing and the installation cost of aerogenerator bracing piece are reduced by a wide margin. And the safe operation of the wind driven generator in a severe environment with strong wind is ensured.

Description

Lift force wind collecting cover for wind driven generator and horizontal shaft wind driven generator

Technical Field

The utility model relates to a wind power generation equipment field, in particular to lift force wind collecting cover and horizontal axis aerogenerator for aerogenerator.

Background

The wind-gathering cover for wind power generation can gather wind energy, improve wind speed and improve the generating capacity of the wind driven generator. However, the wind collecting cover increases the power generation capacity and also increases the resistance in the horizontal wind inlet direction, and the wind resistance is proportional to the square of the wind speed, so that the torque resistance of the support rod must be greatly increased to ensure the safe operation of the wind driven generator in the case of strong wind. This significantly increases the overall cost and installation cost of the fan. Therefore, the wind-collecting cover cannot be well used on the existing wind driven generator.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a lift air collecting cover for aerogenerator aims at solving the problem that exists among the prior art.

The lift force wind gathering cover for the wind driven generator comprises a wind gathering cover body, wherein a lift plate used for providing vertical upward lift force for the wind gathering cover body under the windy condition is arranged outside the wind gathering cover body.

Under windy conditions, when wind power passes through the lifting plates, the lifting plates are airfoil sections in section, so that vertical lifting force is generated, the lifting force generates moment relative to the supporting rod entry site of the wind driven generator, and the moment is opposite to destructive moment generated by wind resistance, so that the destructive moment is partially or completely counteracted.

The lift force is in direct proportion to the square of the wind speed and the area of the lift plate, and the wind resistance is also in direct proportion to the square of the wind speed and the windward area of the whole fan and the wind gathering cover body. When the wind speed changes, the wind resistance and the lift force change in proportion. As long as the lifting plate with the corresponding area is designed, the destructive moment of the supporting rod generated by wind resistance can be counteracted by the moment of the lifting plate at any wind speed.

On the basis of the scheme, in order to provide stable lift force, the lift plates are arranged in pairs, and as a specific scheme, the pairs of lift plates are symmetrical along a tangent plane passing through a horizontal shaft of the wind gathering cover body and perpendicular to a horizontal plane. The number of pairs of wind panels 2 depends on how much wind resistance is needed to counteract the destructive moment.

On the basis of the scheme, the lifting plate is a plate with a certain width, a certain thickness and a certain length. As an embodiment, the lift plate profile is a wing profile; the section of the lifting plate of the airfoil is in the shape of being flat at the bottom and convex at the top like the section of the airfoil of the airplane, and the thick side of the circle faces the air inlet direction.

This patent still provides a horizontal axis aerogenerator, includes lift force wind collecting cover, bracing piece and impeller for aerogenerator, bracing piece and wind collecting cover body fixed connection, and the junction of bracing piece and wind collecting cover body is kept away from the junction of lift plate and wind collecting cover body as far as possible in the horizontal direction, and the purpose of this kind of setting is that, the lift plate is far away from the horizontal distance of bracing piece more, and the arm of force is longer more, and the lift moment that provides is big more, and the effect is better. For example, the lifting plate is installed at one side of the air outlet, and the support rod is installed at one side of the air inlet.

This design is through setting up the lifter plate in the wind-collecting cover outside, can partially or totally offset owing to use wind power generation wind-collecting cover and the destructive moment to the bracing piece that conventional windage brought to the manufacturing and the installation cost of aerogenerator bracing piece are reduced by a wide margin. And the safe operation of the wind driven generator in a severe environment with strong wind is ensured.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is a schematic structural view of a horizontal axis wind turbine (a wind collecting cover body is in a cone shape, and an air inlet is small and an air outlet is large);

FIG. 2 is a schematic structural view of the wind-collecting cover in example 1 (top pair of lift plates);

fig. 3 is a schematic structural view of the wind collecting cover in embodiment 1 (a pair of lifting plates on two sides);

FIG. 4 is a schematic structural view of the wind collecting cover (two pairs of lifting plates) in example 1;

FIG. 5 is a schematic structural view of a horizontal-axis wind turbine (the portion of the wind-collecting cover body wrapping the generator impeller is cylindrical);

FIG. 6 is a schematic structural view of a horizontal axis wind turbine (the wind collecting cover body is in a cone shape, and the air inlet is large and the air outlet is small);

fig. 7 is a schematic structural view of a horizontal axis wind turbine (the whole wind collecting cover body is in a conical cylinder shape, the middle part is sunken, and the air inlet is large and the air outlet is small);

fig. 8 is a schematic structural diagram of a horizontal-axis wind turbine (the wind collecting cover body is cylindrical).

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1 to 8, the lift force wind collecting cover for the wind driven generator comprises a wind collecting cover body 1, and a lift plate 2 for providing a vertical upward lift force to the wind collecting cover body 1 under the condition of wind is arranged outside the wind collecting cover body 1.

Under windy conditions, when the wind passes through the lifting plates 2, the lifting plates 2 generate a vertical lifting force, and the lifting force generates a moment relative to the supporting rod entry site of the wind driven generator, wherein the moment is opposite to the destructive moment generated by wind resistance, so that the destructive moment is partially or completely counteracted.

As shown in fig. 2 to 4, in order to provide stable lift force, the lift plates 2 are arranged in pairs, and as a specific scheme, the pairs of lift plates 2 are symmetrical along a tangent plane passing through a horizontal axis of the wind collecting cover body 1 and vertical to a horizontal plane.

Specifically, the lifting plate 2 is a plate with a certain width, a certain thickness and a certain length. As an embodiment, the cross-sectional shape of the lifting plate 2 is a wing type; the section of the lift plate 2 of the airfoil type is in a shape of being flat at the bottom and convex at the top like the section of an airplane wing, and one side of the round thickness faces the air inlet direction.

As an embodiment, as shown in fig. 3, a pair of the lifting plates 2 are arranged on two outer sides of the wind gathering cover body 1; or as shown in fig. 2, the pair of lift plates 2 are combined into a whole and arranged on the top of the outlet side of the wind collecting cover body 1.

As another embodiment, as shown in fig. 4, there are two pairs of the lifting plates 2, one pair of which is disposed on both sides of the outside of the wind collecting cover body 1, and the other pair of which is disposed on the top of the outlet side of the wind collecting cover body 1.

The number of pairs of wind panels 2 depends on how much wind resistance is needed to counteract the destructive moment.

The wind-collecting cover body 1 is a cylindrical cover which is wrapped on the periphery of an impeller of the generator and used for collecting wind energy and improving wind speed, and the shape of the wind-collecting cover body 1 can be designed into different diameter changes in the horizontal direction according to different performance targets and Bernoulli principle, for example: the air inlet is small and the air outlet is large as shown in figure 1; or as shown in fig. 6, the air inlet is large and the air outlet is small; or the middle small air inlet and outlet is large as shown in fig. 7, and meanwhile, fig. 7 can also be designed into a waist drum shape, namely, the middle parts of the air inlet and the air outlet are the same and are thin; or a straight cylinder as shown in fig. 8; or the shape of the wind gathering cover body (1) as shown in fig. 5 is cylindrical or conical at least at the part wrapping the generator impeller (i.e. the wind gathering cover body is changed into conical at the cylindrical position in fig. 5); in addition, the length of the wind collecting cover body 1 can be flexibly designed.

Example 2

The utility model provides a horizontal axis aerogenerator, includes lift force wind collecting cover, bracing piece 3 and impeller 4 for aerogenerator in embodiment 1, bracing piece 3 and wind collecting cover body 1 fixed connection, and the junction of bracing piece 3 and wind collecting cover body 1 is kept away from the junction of lift plate 2 and wind collecting cover body 1 as far as possible in the horizontal direction, and the purpose of this kind of setting is, and the lift plate 2 is far away from the horizontal distance of bracing piece 3, and the arm of force is longer, and the lift moment that provides is bigger, and the effect is better. For example, the lifting plate 2 is installed at one side of the air outlet, and the support rod 3 is installed at one side of the air inlet.

Other components of the horizontal axis wind turbine are conventional components for realizing wind power generation, such as a generator, an energy storage device and the like, and are not described in detail herein.

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The lift force wind gathering cover for the wind driven generator comprises a wind gathering cover body (1) and is characterized in that a lift plate (2) used for providing vertical upward lift force for the wind gathering cover body (1) under the condition of wind is arranged outside the wind gathering cover body (1).

2. The lift wind collector for wind turbines according to claim 1, characterized in that said lift plate (2) has a cross-sectional shape of a wing.

3. The lift wind collector for wind generators according to claim 2, characterized in that the lift plates (2) are arranged in pairs.

4. The lift wind collector for wind turbines according to claim 3, characterised in that the pairs of lift plates (2) are symmetrical along a section passing through the horizontal axis of the wind collector body (1) and perpendicular to the horizontal plane.

5. The lift wind collector for wind turbines according to claim 3, characterized in that said lift plates (2) are provided in pairs, either on the external sides of said wind collector body (1) or on the top of the outlet side of said wind collector body (1).

6. The lift wind collector for wind turbines according to claim 3, characterized in that said lift plates (2) are provided in two pairs, one pair being arranged on both external sides of the wind collector body (1) and the other pair being arranged on top of the outlet side of the wind collector body (1).

7. The lift force wind collecting cover for the wind driven generator according to claim 1, wherein the wind collecting cover body (1) is a cylindrical cover which is wrapped on the periphery of a generator impeller and used for collecting wind energy and increasing wind speed.

8. The lift wind collector according to claim 7, wherein said wind collector body (1) is cylindrical or conical in shape at least in the portion surrounding the generator wheel.

9. A horizontal axis wind turbine, which comprises an impeller (4), a support rod (3), a generator and an energy storage device, and is characterized by further comprising the lift force wind gathering cover for the wind turbine as claimed in any one of claims 1 to 7, wherein the support rod (3) is fixedly connected with the wind gathering cover body (1).

10. A horizontal axis wind turbine according to claim 9, wherein the connection between the support rod (3) and the wind collecting housing body (1) is located as far away from the connection between the lifting plate (2) and the wind collecting housing body (1) in the horizontal direction as possible.