CN214887464U

CN214887464U - Tail vane for wind driven generator and horizontal shaft wind driven generator

Info

Publication number: CN214887464U
Application number: CN202121531254.8U
Authority: CN
Inventors: 陈文鹏; 刘明
Original assignee: Qingdao Shangyue Intelligent Industry Co ltd
Current assignee: Qingdao Shangyue Intelligent Industry Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-11-26
Anticipated expiration: 2031-07-07

Abstract

The utility model relates to a tail vane for aerogenerator, including the tail vane body, the tail vane body is provided with and is used for providing the lift board of perpendicular upward lift for the tail vane body under windy condition. In windy conditions, the forces acting on the lifting plates produce a moment relative to the point of entry of the support rod of the wind generator, which is counter-directed to the destructive moment produced by the wind resistance, thereby partially or totally counteracting the destructive moment. The design has the advantages that: 1. the lifting plates are arranged on the two sides of the tail rudder, so that destructive torque to the supporting rod caused by wind resistance can be partially or completely counteracted, and safe operation of a small and medium-sized wind driven generator in a land tight area is facilitated; 2. the manufacturing and installation cost of the support rod of the wind driven generator can be greatly reduced; 3. the existing support rod can be safely utilized, the wind driven generator is additionally arranged, and the cost of newly installing the support rod is reduced.

Description

Tail vane 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 a tail vane and horizontal axis aerogenerator for aerogenerator.

Background

The wind driven generator standing outdoors can generate destructive torque relative to a supporting pole tower ground-entering fulcrum due to wind resistance, the larger the fan is, the higher the height is, the higher the wind speed is, the larger the torque on the supporting pole such as a place is, the larger the generated pulling force is, and the higher the strength of the needed pole tower is. In some cases, the stay cables are required to be fixed in an enhanced manner so as to ensure the safety of the structure under high wind. Thereby restricting the application of the wind driven generator, especially the small and medium wind driven generator in the land tension area.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a tail vane for aerogenerator aims at solving the problem that exists among the prior art.

The tail rudder comprises a tail rudder body, wherein the tail rudder body is provided with an elevating plate which is used for providing vertical upward lifting force for the tail rudder body under the windy condition.

The tail vane of the wind driven generator is a wind-guiding device with a certain length, a certain width and a certain height, the width of the tail vane is far smaller than the length and the height, and the ratio of the height to the length is in the range of 2-5. The tail vane body is arranged in a wake flow area behind an impeller of the wind driven generator and used for adjusting the direction of the impeller of the wind driven generator, and when the wind sweeping surface of the impeller of the wind driven generator is not perpendicular to the wind direction, the air pressure at two sides is different due to different air flow velocities passing through two sides of the tail vane, so that the wind driven generator turns under the action of differential pressure, the wind sweeping surface of the impeller of the wind driven generator is opposite to the direction of incoming wind, and the efficiency of the wind driven generator is ensured.

Under windy conditions, when wind power passes through the lifting plates, the lifting plates are airfoil sections, 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 tower and the fixed equipment. 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 above scheme, in order to provide stable lift, the lift plates are arranged in pairs, and as a specific scheme, the pairs of lift plates are symmetrical along a longitudinal section passing through the central shaft of the tail vane body. The number of pairs of lift plates depends on how much wind resistance is needed to counteract the destructive moment. Because the tail vane body can automatically adjust the direction under the windy condition, the lifting plate fixed on the tail vane body can provide corresponding lifting force under the windy condition.

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, including tail vane, bracing piece, cabin, impeller, generator and the energy memory that is used for aerogenerator, the junction of bracing piece and horizontal axis aerogenerator is in the junction that the horizontal direction kept away from lifting plate and tail vane body as far as possible, the purpose of this kind of setting, the lifting plate is far away from the horizontal distance of bracing piece more, the arm of force is longer more, the lift moment of force that provides is big more, the effect is better, simultaneously, can also utilize current bracing piece safely, install aerogenerator additional, reduce the cost of newly installing the bracing piece.

On the basis, in order to adapt to the requirements of different wind driven generators, destructive moment to the supporting rod caused by wind resistance is offset for most of small and medium-sized wind driven generators with tail rudders in a mode of adding lifting plates on tail rudders, and destructive moment to the supporting rod caused by wind resistance can be offset for large wind driven generators without tail rudders by adding tail rudders for the wind driven generators.

The design has the advantages that: 1. the lifting plates are arranged on the two sides of the tail rudder, so that destructive torque to the supporting rod caused by wind resistance can be partially or completely counteracted, and safe operation of a small and medium-sized wind driven generator in a land tight area is facilitated; 2. the manufacturing and installation cost of the supporting rod of the wind driven generator can be greatly reduced, and 3, the existing supporting rod can be safely utilized, the wind driven generator is additionally arranged, and the cost of newly installing the supporting rod is reduced.

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 view of a horizontal axis wind turbine;

fig. 2 is a schematic structural diagram of a tail vane for a wind turbine generator according to embodiment 1 of the present patent.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can 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 invention 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, the tail rudder for the wind driven generator comprises a tail rudder body 1, wherein the tail rudder body 1 is provided with a lift plate 2 for providing a vertical upward lift force for the tail rudder body 1 under windy conditions.

The tail rudder of the wind driven generator is a wind-facing device with a certain length, a certain width and a certain height, the width of the tail rudder is far smaller than the length and the height, and the ratio of the height to the length is in the range of 2-5. The tail vane body 1 is arranged in a wake flow area behind the impeller 5 of the wind driven generator and used for adjusting the direction of the impeller 5 of the wind driven generator, and when the wind sweeping surface of the impeller 5 of the wind driven generator is not perpendicular to the wind direction, the air pressure at two sides is caused to have a difference value due to different air flow velocities passing through two sides of the tail vane, so that the wind driven generator turns under the action of the pressure difference force, the wind sweeping surface of the impeller 5 of the wind driven generator is opposite to the direction of the incoming wind, and the efficiency of the wind driven generator is ensured.

Under windy conditions, when wind power passes through the lifting plates 2, the lifting plates 2 are airfoil sections, so that vertical lifting force is generated, the lifting force generates moment relative to the entering place of the support rod 3 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 magnitude of the lift force is in direct proportion to the square of the wind speed and the area of the lift plate 2, and the magnitude of the wind resistance is also in direct proportion to the square of the wind speed and the frontal area of the whole tower and the fixed equipment. When the wind speed changes, the wind resistance and the lift force change in proportion. As long as the lifting plate 2 with the corresponding area is designed, the destructive moment on the support rod 3 caused by wind resistance can be offset by the moment of the lifting plate 2 at any wind speed.

As shown in fig. 2, in order to provide stable lift, the lift plates 2 are provided in pairs, at least one pair of lift plates is provided on both sides of the tail rudder body 1, and are symmetrical along a longitudinal section B passing through a central axis a of the tail rudder body 1, and the lift plates 2 are detachably connected to the tail rudder body 1 or the lift plates 2 are integrally formed with the tail rudder body 1. As a specific scheme, the number of the paired lift plates 2 is a pair, and the paired lift plates are fixedly mounted at the horizontal position of the tail vane mounting shaft, so that the stability of the lift plates 2 is improved. The number of pairs of wind panels 2 depends on how much wind resistance is needed to counteract the destructive moment. Because the tail vane body 1 can automatically adjust the direction under the windy condition, the lifting plate 2 fixed on the tail vane body 1 can provide corresponding lifting force under the windy condition.

On the basis, 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.

Example 2

The utility model provides a horizontal axis aerogenerator, includes the tail vane, bracing piece 3, cabin 4, impeller 5, generator and the energy memory that are used for aerogenerator in embodiment 1, the junction of bracing piece 3 and horizontal axis aerogenerator is kept away from the junction of lift plate 2 and tail vane body 1 as far as possible in the horizontal direction, the purpose of this kind of setting is, lift plate 2 is far away from the horizontal distance of bracing piece 3, the arm of force is longer, the lift moment that provides is bigger, the better the effect.

On the basis, the tail vane body 1 is detachably connected with the horizontal-axis wind turbine or the tail vane body 1 and the engine room 4 are integrally formed. In order to meet the requirements of different wind power generators, for example, for most of small and medium-sized wind power generators with tail rudders, the tail rudder body 1 and the engine room 4 are fixedly connected in a detachable or integrated manner, destructive torque to the support rod 3 caused by wind resistance only needs to be counteracted in a manner of adding the lifting plate 2 to the tail rudder body 1, and for large wind power generators without tail rudders, the tail rudder body 1 and the engine room 4 are detachably connected in a manner of adding the tail rudder for the wind power generators, so that destructive torque to the support rod 3 caused by wind resistance is counteracted.

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 tail vane for the wind driven generator comprises a tail vane body (1) and is characterized in that the tail vane body (1) is provided with a lift plate (2) which is used for providing vertical upward lift force for the tail vane body (1) under the windy condition.

2. Tail rudder for wind power plants according to claim 1, characterised in that the cross-sectional shape of the lifting plate (2) is airfoil-shaped.

3. Tail rudder for wind power plants according to claim 2, characterised in that the lifting plates (2) are arranged in pairs.

4. Tail rudder for wind power plants according to claim 3, characterised in that the pairs of lift plates (2) are symmetrical in longitudinal section through the central axis of the tail rudder body (1).

5. The tail rudder for a wind power generator according to claim 3, wherein at least one pair of the lifting plates (2) is provided on both sides of the tail rudder body (1).

6. The tail rudder for a wind power generator according to claim 1, characterized in that the lift plate (2) is detachably connected with the tail rudder body (1) or the lift plate (2) is integrally formed with the tail rudder body (1).

7. A horizontal axis wind turbine comprising a support bar (3), a nacelle (4), an impeller (5), a generator and an energy storage means, characterized in that it further comprises a lift tail vane for a wind turbine according to any of claims 1 to 6.

8. The horizontal axis wind turbine according to claim 7, wherein the connection of the support rod (3) and the horizontal axis wind turbine is at a position which is as far away from the connection of the lifting plate (2) and the tail rudder body (1) as possible in the horizontal direction.

9. The horizontal-axis wind turbine as claimed in claim 7, wherein the tail rudder body (1) is detachably connected with the nacelle (4) or the tail rudder body (1) is integrally formed with the nacelle (4).