CN219176489U

CN219176489U - Vertical axis wind turbine

Info

Publication number: CN219176489U
Application number: CN202320320153.9U
Authority: CN
Inventors: 吴泽法
Original assignee: Harbin Zongheng Municipal Engineering Co ltd
Current assignee: Harbin Zongheng Municipal Engineering Co ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-06-13
Anticipated expiration: 2033-02-24

Abstract

A vertical axis wind turbine belongs to the technical field of wind power generation. The base is provided with a sleeve which is rotationally sleeved at the lower end of the outer side of the upright post, the upper end of the outer side of the upright post is provided with a bracket, the lower end of the upright post is connected with the generator, the upper end cover and the lower end cover are arranged in parallel up and down, and the outer sides of the upper end cover and the lower end cover are sleeved with skins; the eccentric position of the upper end cover and the eccentric position of the lower end cover are correspondingly fixed with blade shafts which are in rotary connection with corresponding brackets. When the wind force is too large, the blades can automatically shrink and stack, so that the wind resistance is strong, the damage of the generator is avoided, and the economic loss is avoided, therefore, the shutdown treatment is not needed in strong wind, and the vertical axis wind power generator can be enlarged; when the blades rotate along with wind to be in contact with the stop blocks, the stop blocks cannot continue to rotate, at the moment, the windward area of the blades is enlarged, and the resistance is also increased, so that the wind energy self-starting device can be started even when the wind force is weaker, and the wind energy utilization rate is high.

Description

Vertical axis wind turbine

Technical Field

The utility model relates to a vertical axis wind turbine, and belongs to the technical field of wind power generation.

Background

In the prior art, if the application date is 10 days of 04 months in 2019, the application number is CN201910285696.X, the vertical axis wind driven generator disclosed in the name of a wind driven generator is required to be shut down when the wind power is overlarge, otherwise, the over-running of blades can damage the generator, and then economic loss can be caused, so that the existing vertical axis wind driven generator cannot be enlarged;

meanwhile, the vertical axis wind driven generator is difficult to self-start when the wind power is small due to the small contact area between the blades and the wind.

Both of these reasons result in the inefficiency of existing vertical axis wind turbines.

Disclosure of Invention

In order to solve the problems in the background technology, the utility model provides a vertical axis wind turbine.

The utility model adopts the following technical scheme: a vertical axis wind turbine comprises a base, blades, a bracket, an upright post and a sleeve; the upper end of the base is fixedly provided with a sleeve, the sleeve is rotationally sleeved at the lower end of the outer side of the upright post, the upper end of the outer side of the upright post is sleeved with a bracket, the lower end of the upright post is connected with a generator, the number of the brackets is at least two, at least one blade is arranged between every two adjacent brackets, and each blade comprises a skin, an upper end cover, a lower end cover and a blade shaft; the upper end cover and the lower end cover are arranged in parallel up and down, and the outer sides of the upper end cover and the lower end cover are sleeved with a skin; the eccentric position of the upper end cover and the eccentric position of the lower end cover are correspondingly fixed with blade shafts, and the blade shafts are rotationally connected with corresponding brackets.

Compared with the prior art, the utility model has the beneficial effects that:

1. when the wind force is too large, the blades can automatically shrink and stack, so that the wind resistance is strong, the damage of the generator is avoided, and the economic loss is avoided, therefore, the shutdown treatment is not needed in strong wind, and the vertical axis wind power generator can be enlarged;

2. when the blades rotate along with wind to be in contact with the stop blocks, the blades cannot continue to rotate under the stop blocks, the windward area of the blades is increased, and the resistance is also increased, so that the blades can be automatically started even if the wind force is weaker, and the wind energy utilization rate is high;

3. the support can be lifted, and a plurality of supports can share one upright post, so that the wind energy utilization rate is improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic structural view of a bracket;

FIG. 3 is a schematic view of a blade configuration;

fig. 4 is a schematic structural view of the pulling mechanism.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are all within the protection scope of the present utility model.

Example 1:

a vertical axis wind turbine comprises a base 1, blades 5, a bracket 6, a stand column 11 and a sleeve 20; the middle part of the upper end of the base 1 is fixedly provided with a sleeve 20, the sleeve 20 is rotatably sleeved at the lower end of the outer side of the upright post 11 through a bearing, the upper end of the outer side of the upright post 11 is sleeved with a bracket 6, the upright post 11 and the bracket 6 synchronously rotate, the upright post 11 rotates the sleeve 20 and the base 1, the lower end of the upright post 11 is connected with a generator, and the maintenance is convenient, so that the prior art is omitted; the number of the brackets 6 is at least two, at least one blade 5 is arranged between every two adjacent brackets 6, the blade 5 adopts streamline design, and each blade 5 comprises a skin 15, an upper end cover 17, a lower end cover 18 and a blade shaft 19; the upper end cover 17 and the lower end cover 18 are arranged up and down in parallel, and the outer sides of the upper end cover 17 and the lower end cover 18 are sleeved with a skin 15 such as canvas, oxford and the like; the eccentric position of the upper end cover 17 and the eccentric position of the lower end cover 18 are correspondingly fixed with vane shafts 19, and the vane shafts 19 are rotatably connected with the corresponding brackets 6 through bearings. Since the blades are eccentric, the direction can be automatically adjusted according to the wind direction.

At least one framework 16 is arranged between the upper end cover 17 and the lower end cover 18 in parallel, and the framework 16, the upper end cover 17 and the lower end cover 18 are fixedly connected in series through at least two uniformly distributed cables four 21.

The framework 16 of the rigid material is additionally arranged in the blade 5, so that the stability of the blade 5 is improved, and when the blade 5 is oversized, the blade can shrink and stack, so that the self-protection performance is improved. The front end and the tail end of the blade 5 are respectively provided with a cable four 21 with the same length, so that the front and the back of the blade 5 are ensured to be parallel.

The bracket 6 comprises a supporting rod 10 and a mounting seat 13; the mounting seat 13 is radially and limitedly sleeved on the outer side of the upright post 11, at least three supporting rods 10 are uniformly distributed on the outer wall of the mounting seat 13 along the circumferential direction of the mounting seat, shaft mounting grooves 14 are correspondingly formed in the outer ends of opposite faces of two supporting rods 10 corresponding to every two adjacent brackets 6, and the two shaft mounting grooves 14 are correspondingly connected with two blade shafts 19 of corresponding blades 5 in a rotating mode through bearings.

Two corresponding struts 10 of every two adjacent brackets 6 are connected in series through corresponding cables five 2. The fifth cable 2 has the function of adjusting the degree of separation of the bracket 6 up and down and limiting the blade.

And a second cable 4 is arranged between every two adjacent struts 10. The struts 10 of the same height are connected in series and pulled tight, so that the struts 10 interact to form a whole, and the bracket 6 is firmer.

A cable three 7 is arranged between each support rod 10 of the uppermost support 6 and the mounting seat 13. Preventing the support rod from deforming under the action of gravity.

The inner end of each strut 10 of each bracket 6 except the uppermost end is provided with a stop 12. The rotation of the blades on the bracket is blocked by the stop block 12, and the direction can not be automatically adjusted any more, so that the windward area of the blades is enlarged.

Example 2:

this embodiment differs from embodiment 1 in that:

the mounting seat 13 is axially slidably connected with the upright post 11, specifically: the outer wall of the upright post 11 is provided with at least one axial sliding groove, and when the number of the axial sliding grooves is more than one, the axial sliding grooves are uniformly distributed along the circumferential direction of the upright post 11; the inner wall of the mounting seat 13 is provided with a sliding block matched with the axial sliding groove, and the mounting seat 13 and the upright post 11 are in sliding connection with the axial sliding groove through the sliding block.

The upright post 11 is provided with a lifting mechanism which comprises a first mooring rope 3, a fixed pulley 9 and a winch 22; the number of the fixed pulleys 9 is at least two, the fixed pulleys 9 are fixed at the upper ends of the upright posts 11, the fixed pulleys 9 are provided with the first cable 3, one end of the first cable 3 is fixedly connected with the support 6 positioned at the uppermost end, the other end of the first cable 3 is fixedly connected with the corresponding winch 22, and the winch 22 is arranged at the lower end of the upright posts 11. The winch can adjust the height of the bracket once pulling the cable, the bracket can be lowered during maintenance, and the wind can be lowered too much, so that damage is prevented. Through setting up the mechanism that draws up for the support can rise when wind is suitable, also can descend when maintaining. According to actual conditions, if the support is too heavy, a movable pulley or a pulley block can be also arranged.

The top of stand 11 is equipped with rain-proof cap 8, rain-proof cap 8 is located the upper end of two fixed pulleys 9.

When the blades rotate along with wind, the blades are blocked by the stop blocks 12 and cannot continue to rotate when the blades rotate to be in contact with the stop blocks 12, the windward area of the blades is increased, the resistance is increased, then the support 6 is driven to rotate under the action of wind, then the upright post 11 is driven to rotate, and power generation is performed through resistance work.

The size of the blade and the number of layers are related to the height of the upright post, the number of the brackets and the length of the brackets.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. A vertical axis wind turbine comprises a base (1), blades (5), a bracket (6), an upright post (11) and a sleeve (20); the utility model discloses a power generator, including base (1), stand (11), sleeve (20), support (6), support (11) are connected, the lower extreme and the generator of base (1), base (1) upper end is fixed with sleeve (20), sleeve (20) rotate the lower extreme of suit in stand (11) outside, the upper end cover in stand (11) outside is equipped with support (6), its characterized in that: the number of the brackets (6) is at least two, at least one blade (5) is arranged between every two adjacent brackets (6), and each blade (5) comprises a skin (15), an upper end cover (17), a lower end cover (18) and a blade shaft (19); the upper end cover (17) and the lower end cover (18) are arranged in parallel up and down, and the outer sides of the upper end cover (17) and the lower end cover (18) are sleeved with a skin (15); the eccentric position of the upper end cover (17) and the eccentric position of the lower end cover (18) are correspondingly fixed with a blade shaft (19), and the blade shaft (19) is rotationally connected with the corresponding bracket (6).

2. A vertical axis wind turbine as defined in claim 1, wherein: at least one framework (16) is arranged between the upper end cover (17) and the lower end cover (18) in parallel, and the framework (16), the upper end cover (17) and the lower end cover (18) are fixedly connected in series through at least two uniformly distributed mooring ropes four (21).

3. A vertical axis wind turbine as claimed in claim 2, wherein: the bracket (6) comprises a supporting rod (10) and a mounting seat (13); radial spacing suit of mount pad (13) is in the outside of stand (11), and the outer wall of mount pad (13) is equipped with at least three branch (10), every two adjacent two support (6) correspond two the outer end correspondence of branch (10) opposite face is equipped with axle mounting groove (14), two axle mounting groove (14) correspond the rotation with two blade axle (19) of corresponding blade (5) and are connected.

4. A vertical axis wind turbine as claimed in claim 3 wherein: two supporting rods (10) corresponding to every two adjacent brackets (6) are connected in series through corresponding cables five (2).

5. A vertical axis wind turbine as claimed in claim 3 or claim 4 wherein: two mooring ropes (4) are arranged between every two adjacent supporting rods (10).

6. A vertical axis wind turbine as defined in claim 5, wherein: a cable three (7) is arranged between each supporting rod (10) of the uppermost support (6) and the mounting seat (13).

7. A vertical axis wind turbine as defined in claim 6, wherein: the inner ends of the supporting rods (10) except the uppermost supporting rods (6) are provided with stop blocks (12).

8. A vertical axis wind turbine as claimed in claim 3 or claim 7 wherein: the mounting seat (13) is axially and slidably connected with the upright post (11).

9. A vertical axis wind turbine as defined in claim 8, wherein: the upright post (11) is provided with a lifting mechanism, and the lifting mechanism comprises a first mooring rope (3), a fixed pulley (9) and a winch (22); the number of the fixed pulleys (9) is at least two, the fixed pulleys (9) are fixed at the upper ends of the upright posts (11), the fixed pulleys (9) are provided with first cables (3), one ends of the first cables (3) are fixedly connected with the support (6) positioned at the uppermost end, the other ends of the first cables (3) are fixedly connected with corresponding windlass (22), and the windlass (22) is arranged at the lower ends of the upright posts (11).

10. A vertical axis wind turbine as defined in claim 9, wherein: the top of stand (11) is equipped with rain-proof cap (8), rain-proof cap (8) are located the upper end of two fixed pulleys (9).