CN217712808U

CN217712808U - Vertical axis wind turbine

Info

Publication number: CN217712808U
Application number: CN202220726502.2U
Authority: CN
Inventors: 胡奭; 吴限; 涂钢; 张攀; 周建平; 杨玉娇
Original assignee: Sichuan South China Electric Power Design Institute Co ltd
Current assignee: Sichuan South China Electric Power Design Institute Co ltd
Priority date: 2022-03-30
Filing date: 2022-03-30
Publication date: 2022-11-01
Anticipated expiration: 2032-03-30

Abstract

The utility model discloses a vertical axis wind driven generator, which comprises a tower pole (16), a generator (1) arranged on the tower pole (16), a vertical rotating shaft (2) arranged on the generator (1) and a fan blade component arranged on the vertical rotating shaft (2); the fan blade assembly comprises a supporting part and a plurality of fan blades (4) which are uniformly arranged on the supporting part in the circumferential direction; the fan blades (4) are arc-shaped, so that the fan blades are provided with a windward side and a leeward side which are opposite, and a windward concave cavity (9) is formed on the windward side; and the upper end and the lower end of the fan blade (4) are respectively provided with an end plate (8) for covering the windward concave cavity (9). The utility model discloses a windward face of fan blade forms the windward cavity to the upper and lower both ends of fan blade all are provided with and are used for coveing the end plate of windward cavity can prevent wind from discharging from the fan blade both ends through two upper and lower end plates, makes the wind energy rotatory enough better promotion fan blade subassembly, improves the utilization efficiency of wind energy.

Description

Vertical axis wind turbine

Technical Field

The utility model relates to a wind power generation technical field specifically indicates a vertical axis aerogenerator.

Background

The vertical axis wind turbine does not need to face the wind when the wind direction changes, and is a great advantage compared with a horizontal axis wind turbine in this regard, the vertical axis wind turbine not only simplifies the structural design, but also reduces the gyroscopic force of a wind wheel when the wind wheel faces the wind, so that the vertical axis wind turbine is widely welcomed by the market.

The conventional vertical axis wind driven generator has low wind energy utilization rate and affects the generating efficiency due to the design defects of the fan blades. In addition, the conventional vertical axis wind driven generator cannot release the pressure of wind force when encountering strong wind, so that the vertical axis wind driven generator is easily damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem, provide a vertical axis aerogenerator, it can improve wind energy utilization efficiency to can carry out the pressure release to wind-force when the strong wind.

The purpose of the utility model is realized through the following technical scheme: a vertical axis wind turbine comprises a tower pole, a generator arranged on the tower pole, a vertical rotating shaft arranged on the generator and a fan blade assembly arranged on the vertical rotating shaft; the fan blade assembly comprises a supporting part and a plurality of fan blades which are uniformly arranged on the supporting part in the circumferential direction; the fan blades are arc-shaped and are provided with a windward side and a leeward side which are opposite, and the windward side forms a windward concave cavity; and the upper end and the lower end of each fan blade are provided with end plates for covering the windward concave cavities.

Furthermore, the leeward side of the fan blade is provided with turbulence ribs which spirally extend along the axial direction of the fan blade.

As another preferred scheme, a partition plate is vertically arranged in the windward concave cavity, so that a pressure relief cavity is formed in the windward concave cavity; and a pressure relief component is arranged in the pressure relief cavity.

The pressure relief part comprises a pressure relief opening formed in the fan blade, pressure relief plates with the upper and lower ends respectively installed on the two end plates through rotating shafts, and springs connected with the pressure relief plates and the frame of the fan blade; the spring is used for drawing the pressure relief plate, so that the pressure relief plate can seal the pressure relief opening.

As another preferable scheme, the flow disturbance ribs extend to the leeward side of the pressure relief plate.

As another preferred scheme, the cross section of the flow disturbance rib is trapezoidal.

As another preferred scheme, the support component comprises two support frames respectively connected with the upper end and the lower end of the fan blade; the two support frames are arranged on the vertical rotating shaft.

As another preferred scheme, the support frame comprises an inner support ring arranged on the vertical rotating shaft and an outer support ring connected with the inner support ring through a support rod; the end parts of the fan blades are connected with the inner support ring and the outer support ring.

Compared with the prior art, the method has the following beneficial effects:

(1) The utility model discloses a windward face of fan blade forms the windward cavity to the upper and lower both ends of fan blade all are provided with and are used for coveing the end plate of windward cavity can prevent wind from discharging from the fan blade both ends through two upper and lower end plates, makes the wind energy rotatory enough better promotion fan blade subassembly, improves the utilization efficiency of wind energy.

(2) The pressure relief cavity is formed in the windward concave cavity of the utility model, and the pressure relief component is arranged in the pressure relief cavity; when strong wind occurs, the wind power is greater than the traction force of the spring, and the pressure release plate is pushed open by the wind power, so that part of the wind power is released, and the vertical axis wind driven generator is prevented from being damaged by the strong wind.

(3) The utility model discloses be provided with the vortex rib that extends along its axial direction spiral on the leeward side of fan blade, the vortex rib can break up wind reposition of redundant personnel, prevents that the blade from appearing the vortex induced vibration effect and damaging.

Additional features of the present application will be set forth in part in the description which follows. Additional features of some aspects of the present application will be apparent to those of ordinary skill in the art in view of the following description and accompanying drawings, or in view of the production or operation of the embodiments. The features disclosed in this application may be realized and attained by practice or use of various methods, instrumentalities and combinations of the specific embodiments described below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. Like reference symbols in the various drawings indicate like elements. Wherein the content of the first and second substances,

fig. 1 is a structural diagram of the present invention.

Fig. 2 is a structural diagram of the fan blade of the present invention without a pressure relief component.

Fig. 3 is a structural diagram of the fan blade when the leeward side is provided with the turbulence ribs.

Fig. 4 is a structural diagram of the fan blade provided with a pressure relief component.

Fig. 5 is a schematic structural view of the leeward side when the fan blade of the present invention is provided with the pressure relief component.

Fig. 6 is a schematic structural view of the pressure relief component of the present invention.

The reference numbers in the above figures refer to: the wind power generation device comprises a generator 1, a vertical rotating shaft 2, an inner supporting ring 3, a fan blade 4, an outer supporting ring 5, a supporting rod 6, an end plate 8, a windward concave cavity 9, a turbulence rib 10, a pressure relief plate 11, a frame 12, a partition plate 13, a pressure relief cavity 14, a spring 15, a tower rod 16 and a pressure relief opening 17.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that if the terms "first", "second", etc. are used in the description and claims of this application and in the above-described drawings, they are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, if the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, if the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", etc. are referred to, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, in this application, the terms "mounted," "disposed," "provided," "connected," "sleeved," and the like should be construed broadly if they are referred to. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

As shown in fig. 1 to 3, the present embodiment discloses a vertical axis wind turbine, which includes a tower 16, a generator 1 mounted on the tower 16, a vertical shaft 2 mounted on the generator 1, and a wind blade assembly disposed on the vertical shaft 2. When the wind power generator is installed, the tower rod 16 is connected with a stator of the generator 1, the vertical rotating shaft 2 is connected with a rotor of the generator 1, and when the wind blade component drives the vertical rotating shaft 2 to rotate, the generator 1 starts to generate electricity; in addition, this vertical axis aerogenerator is still including parts such as contravariant unit, battery, because the structure and the principle of this part are prior art, do not do too much repeated here, and it is right that following focus explains the utility model discloses a fan blade subassembly.

Specifically, as shown in fig. 1, the fan blade assembly includes a support member and a plurality of fan blades 4 uniformly arranged on the support member in the circumferential direction, and when the fan blade assembly is specifically implemented, the number of the fan blades 4 is set to four.

The support component comprises two support frames, the two support frames are respectively connected with the upper end and the lower end of the fan blade 4 and are respectively used for fixing the upper end and the lower end of the fan blade 4. Two support frames are all installed on this vertical rotating shaft 2, and then make whole fan blade subassembly can install on this vertical rotating shaft 2.

The support frame comprises an inner support ring 3 mounted on a vertical shaft 2 and an outer support ring 5 connected to the inner support ring 3 by a support bar 6. The end of the fan blade 4 is connected with an inner support ring 3 and an outer support ring 5, as shown in fig. 1.

As shown in fig. 2, the fan blades 4 are arc-shaped, so that the fan blades have opposite windward sides and leeward sides; the leeward side is an outwardly convex cambered surface, and the windward side is formed into a concave windward concave cavity 9. Therefore, when the wind blows to the windward side of the fan blade, the windward concave cavity 9 can receive the wind, and the fan blade assembly is pushed to rotate by the wind power.

In addition, the upper end and the lower end of the fan blade 4 are provided with end plates 8, and the end plates 8 are used for covering the upper end and the lower end of the windward concave cavity 9. By arranging the end plates 9, when wind blows into the windward cavity 9, the wind cannot be discharged from the upper end and the lower end of the fan blade 4, and the utilization efficiency of the wind power is improved.

Example 2

As shown in fig. 3, in this embodiment, on the basis of embodiment 1, the leeward surface of the fan blade 4 is provided with the spoiler ribs 10 spirally extending along the axial direction thereof, and the number of the spoiler ribs 10 may be multiple and is sequentially distributed from top to bottom.

In addition, the cross section of the turbulence rib 10 is trapezoidal, when wind blows to the turbulence rib 10, the wind blows to the leeward side of the fan blade 4 along two sides of the trapezoidal turbulence rib 10, the wind can be dispersed through the buffering of the turbulence rib 10, and the blade 4 is prevented from being damaged due to the vortex-induced vibration effect.

Example 3

As shown in fig. 4 to 6, in this embodiment, on the basis of embodiment 2, a partition plate 13 is disposed in the windward cavity 9 of the fan blade 4, and when the partition plate is specifically disposed, the upper end of the partition plate 13 is connected to the upper end plate 8, and the lower end of the partition plate 13 is connected to the lower end plate 8, so that a pressure relief cavity 14 is formed in the windward cavity 9. In addition, a pressure relief component for relieving part of the wind pressure is arranged in the pressure relief cavity 14.

Specifically, the pressure relief part comprises a pressure relief opening 17 formed in the fan blade 4, pressure relief plates 11 with upper and lower ends respectively mounted on the upper and lower end plates 8 through rotating shafts, and springs 15 connected with the pressure relief plates 11 and the frames 12 of the fan blade 4. When the fan blade is installed, one side of the pressure relief plate 11 is connected with the end plate 8, and the other side of the pressure relief plate is connected with the frame 12 of the fan blade 4 through the spring 15; the spring 15 is used for drawing the pressure relief plate 11, so that the pressure relief plate 11 can close the pressure relief opening 17.

At normal wind speeds, the pressure relief plate 11 is in a closed state due to the tension of the spring 15. When strong wind appears, wind power is greater than the pulling force of spring 15, and pressure release plate 11 uses the pivot above that as the center rotation this moment, and then makes pressure release opening 17 open, and spring 15 is stretched, and wind is discharged from pressure release opening 17, and pressure release opening 17 opens when wind-force is big more, prevents that fan blade subassembly from being damaged by strong wind.

In addition, a stop block can be arranged on the fan blade 4, and the pressure relief plate 11 can only be opened towards one side of the leeward side of the fan blade 4 through the blocking effect of the stop block.

On the basis of the structure of the present embodiment, the spoiler rib 10 in the present embodiment extends to the leeward side of the pressure relief plate 11.

It should be noted that all of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

In addition, the above embodiments are exemplary, and those skilled in the art can devise various solutions in light of the disclosure, which are all within the scope of the disclosure and fall within the scope of the invention. It should be understood by those skilled in the art that the present specification and its drawings are illustrative and not restrictive on the claims. The scope of the invention is defined by the claims and their equivalents.

Claims

1. A vertical axis wind turbine comprises a tower pole (16), a generator (1) arranged on the tower pole (16), a vertical rotating shaft (2) arranged on the generator (1) and a fan blade assembly arranged on the vertical rotating shaft (2); the fan blade assembly comprises a supporting part and a plurality of fan blades (4) which are uniformly arranged on the supporting part in the circumferential direction; the wind-driven generator is characterized in that the fan blades (4) are arc-shaped, so that the fan blades are provided with a windward surface and a leeward surface which are opposite to each other, and the windward surface forms a windward concave cavity (9); and the upper end and the lower end of the fan blade (4) are respectively provided with an end plate (8) for covering the windward concave cavity (9).

2. A vertical axis wind turbine as claimed in claim 1, wherein the leeward side of the blades (4) is provided with turbulator ribs (10) extending helically in the axial direction thereof.

3. The vertical axis wind turbine according to claim 2, characterized in that a partition (13) is vertically arranged in the windward cavity (9) so that a pressure relief cavity (14) is formed in the windward cavity (9); a pressure relief component is arranged in the pressure relief cavity (14).

4. The vertical axis wind turbine according to claim 3, wherein the pressure relief component comprises a pressure relief opening (17) formed in the fan blade (4), a pressure relief plate (11) with upper and lower ends respectively mounted on the upper and lower end plates (8) through a rotating shaft, and a spring (15) connecting the pressure relief plate (11) and a frame (12) of the fan blade (4); the spring (15) is used for drawing the pressure relief plate (11) to enable the pressure relief plate (11) to seal the pressure relief opening (17).

5. Vertical axis wind turbine according to claim 4, characterized in that the spoiler rib (10) extends to the lee side of the pressure relief plate (11).

6. Vertical axis wind turbine according to any of claims 2 to 5, characterized in that the cross section of the turbulator bars (10) is trapezoidal.

7. The vertical axis wind turbine according to any one of claims 1 to 5, wherein the support member comprises two support frames connected to upper and lower ends of the fan blade (4), respectively; the two support frames are arranged on the vertical rotating shaft (2).

8. Vertical axis wind turbine according to claim 7, characterized in that said support frame comprises an inner support ring (3) mounted on said vertical shaft (2) and an outer support ring (5) connected to said inner support ring (3) by means of support bars (6); the end part of the fan blade (4) is connected with the inner support ring (3) and the outer support ring (5).