CN211777813U

CN211777813U - Vertical axis wind turbine

Info

Publication number: CN211777813U
Application number: CN202020285380.9U
Authority: CN
Inventors: 尹大军
Original assignee: Jiangsu Naier Wind Power Technology Development Co ltd
Current assignee: Jiangsu Naier Wind Power Technology Development Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-27
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a vertical axis wind-driven generator, which comprises a generator body, a vertical shaft, blades and a bracket; the vertical shaft is used for driving a main shaft of the generator body, the blades are connected with the vertical shaft through the support, and the number of the blades is multiple; the bracket is made of a steel plate, the middle part of the bracket is bent to form an upward bulge, and the front part of the bracket is bent to form a folded plate for connecting the blades. The vertical axis wind driven generator uses the bent steel plate as the bracket, and the steel plate is formed by laser cutting and bending by a plate bending machine, so that the size precision is high, and the mounting precision of the blade is favorably improved; simultaneously, the support middle part is protruding, compares in traditional square tube formula support, can ensure the intensity of support, can avoid the rainwater again in the inside accumulation of support, reduces the corruption of rainwater to the support, improves the life of support.

Description

Vertical axis wind turbine

Technical Field

The utility model relates to a aerogenerator field especially relates to a vertical axis aerogenerator with dryer.

Background

The vertical axis wind power generator is classified into a resistance type vertical axis wind power generator and a lift type vertical axis wind power generator according to the aerodynamic principle, and the resistance type vertical axis wind power generator uses resistance type fan blades, such as barrier flat type fan blades, air cylinders with semi-cylindrical blades, air cup type blades, and the like; the lift type vertical axis wind turbine is also called a Darieu wind turbine, and a lift type fan blade is used, and the section of the blade is generally a symmetrical wing shape and is also called a wing-shaped blade.

The resistance type vertical axis wind driven generator is limited by the diameter of the blade, the utilization efficiency of wind energy is not high, and medium and large vertical axis wind driven generators in the prior art are all of a lift type. The defects of the current lift type vertical axis wind turbine are as follows: 1. the square tube is used as a support, the square tube support is used for connecting the wing-shaped blade and the vertical shaft, the blanking precision of the square tube support is low, more errors are introduced by matching with the welding of the square tube support and the wing-shaped blade and the welding of the square tube support and the vertical shaft at the later stage, and the final installation angle of the wing-shaped blade is easily unqualified; 2. the square pipe support is hollow, so that rainwater is easily introduced from a welding seam and is easily stored, the square pipe support is corroded, the welding seam is corroded, and the service life of the wind driven generator is influenced; 3. the wall thickness of the square tube support is limited, the welding technology requirement is high during welding, and the defect of welding through the tube wall is easy to occur; 4. the square tube support is also required to be matched with deburring, drilling and paint spraying procedures in the welding process, and the whole installation process is complex; 5. the lift type vertical axis wind turbine has high requirement on starting wind speed.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is that prior art's lift type vertical axis aerogenerator uses the fluorescent tube as the support, and its welding process leads to installing complicacy, easy storage rainwater and the big defect of waiting of wing blade installation error, and the generator requires highly to start the wind speed simultaneously, influences the generating efficiency.

In order to solve the technical problem, the utility model discloses a technical scheme does: a vertical axis wind turbine comprises a generator body, a vertical axis, blades and a bracket;

the vertical shaft is used for driving a main shaft of the generator body, the blades are connected with the vertical shaft through the support, and the number of the blades is multiple;

the bracket is made of a steel plate, the middle part of the bracket is bent to form an upward bulge, and the front part of the bracket is bent to form a folded plate for connecting the blades.

During actual production, a raw steel plate is firstly cut and formed by laser according to a drawing, and then is bent for multiple times by a plate bending machine to form a shape with a convex middle part and a bent front part; compared with the traditional square tube support, the support has higher dimensional accuracy, welding is not needed in the installation process, and the installation accuracy is high; the shape of the bracket belongs to an open structure, no cavity for storing rainwater exists, and rainwater can be discharged in time to reduce corrosion.

Further, the angle of the protrusion is 90 degrees, and the included angle between the folded plate and the support main body is 90 degrees.

Furthermore, the folded plate at the front part of the bracket is fixedly connected with the blade through a bolt, and the rear part of the bracket is fixedly connected with the vertical shaft through a bolt.

Furthermore, the support is made of a stainless steel plate, so that the influence of the corrosion on the service life of the wind driven generator is avoided.

Furthermore, the blades are lift-type fan blades, and one or more resistance-type fan blades are also arranged on the vertical shaft; the resistance type fan blade has low requirement on starting wind speed, and can start the wind driven generator under the condition of low wind speed, thereby improving the wind energy utilization rate of the wind driven generator.

Furthermore, the resistance type fan blade is an air duct adopting semi-cylindrical blades.

Furthermore, first disks are arranged at two ends of the air duct, a second disk is arranged on the vertical shaft, and the first disks are connected with the second disks through bolts.

Furthermore, the resistance type fan blade and the lift type fan blade are both made of aluminum alloy.

Has the advantages that: (1) the utility model discloses a vertical axis aerogenerator uses the steel sheet of bending as the support, and the steel sheet is through laser cutting and the bending machine shaping of bending, and size precision is high, is favorable to improving the installation accuracy of blade. (2) The utility model discloses a vertical axis aerogenerator's support passes through the bolt and is connected with perpendicular vertical axis and blade, and the installation of blade need not to use welding process, and not only installation effectiveness is higher, can omit processes such as follow-up burring of cooperation welded, spray paint moreover, practices thrift the cost. (3) The utility model discloses a vertical axis aerogenerator's support middle part is protruding, compares in traditional square tube formula support, can ensure the intensity of support, can avoid the rainwater to accumulate inside the support again, reduces the corruption of rainwater to the support, improves the life of support. (4) The utility model discloses a vertical axis aerogenerator disposes one or more dryer on perpendicular vertical axis, and the dryer can help aerogenerator start under the condition of low wind speed, improves aerogenerator's wind energy utilization ratio.

Drawings

FIG. 1 is a schematic view of a vertical axis wind turbine according to embodiment 1.

FIG. 2 is a schematic view of a vertical axis wind turbine according to embodiment 2.

Wherein: 1. a generator body; 2. a vertical axis; 210. a second disc; 3. an airfoil shaped blade; 4. a support; 410. a protrusion; 420. folding the plate; 5. an air duct; 510. a semi-cylindrical blade; 520. a first disk.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1

As shown in fig. 1, the vertical axis wind turbine of the present embodiment includes a generator body 1, a vertical axis 2, wing-shaped blades 3, a support 4 and a wind barrel 5;

the bracket 4 is made of a stainless steel plate with the thickness of 3mm through laser cutting and bending by a plate bending machine, wherein the middle part of the bracket 4 is bent to form a 90-degree bulge 410, and the front part of the bracket 4 is bent to form a folded plate 420 which forms a 90-degree angle with the main body of the bracket 4; the folded plate 420 at the front part of the bracket 4 is fixedly connected with the wing-shaped blade 3 through a bolt, and the rear part of the bracket 4 is fixedly connected with the vertical shaft 2 through a bolt;

the air duct 5 comprises a semi-cylindrical blade 510 at the middle part and first disks 520 at two ends, the air duct 5 is sleeved on the vertical shaft 2, the second disk 210 is arranged on the vertical shaft 2, and the first disks 520 and the second disks 210 are fixedly connected through bolts;

the vertical shaft 2 is used to drive the main shaft of the generator body 1.

The vertical axis wind driven generator of the embodiment has the advantages of compact overall structure, light weight, low noise and low gravity center, and can be installed at the tops of buildings such as office buildings, factory buildings, houses and the like; the wind and light complementary system is very suitable for residential electricity and frontier sentry electricity in remote areas where a power grid cannot reach, can also be used for urban basic lighting and public facility electricity utilization, is matched with a photovoltaic power generation system to form a wind and light complementary system, ensures continuous power supply in continuous rainy weather, and ensures normal operation of infrastructure.

Because the vertical shaft wind driven generator integrates the wing-shaped blades 3 and the wind barrel 5, the vertical shaft 2 can also rotate at low wind speed; experiments prove that the vertical axis wind driven generator can be started at the wind speed of 1.2-1.5 m/s, and compared with the traditional wind driven generator needing the starting wind speed of 2.5m/s in the market, the wind driven generator has the advantage of obvious improvement. Meanwhile, experiments prove that the wind barrel 5 in the embodiment can also assist in improving the power generation efficiency, and the vertical axis wind driven generator can improve the power generation efficiency by 30-45% under the conditions of the same installed capacity and 6m/s (corresponding to 3-4 grade wind in the natural environment).

Example 2

As shown in fig. 2, the present embodiment is substantially the same as embodiment 1, except that the present embodiment increases the number of the air ducts 5 to two; in practical applications, the number of the wind tunnel 5 may be one or more according to the overall size of the vertical axis wind turbine and the usage environment.

Although the embodiments of the present invention have been described in the specification, these embodiments are only for the purpose of presentation and should not be construed as limiting the scope of the present invention. Various omissions, substitutions, and changes may be made without departing from the spirit and scope of the invention.

Claims

1. A vertical axis wind turbine, characterized by: the generator comprises a generator body, a vertical shaft, blades and a bracket;

2. The vertical axis wind turbine as defined in claim 1, wherein: the angle of the projection is 90 °.

3. The vertical axis wind turbine as defined in claim 1, wherein: the folded plate and the bracket main body form an included angle of 90 degrees.

4. The vertical axis wind turbine as defined in claim 1, wherein: the folded plate at the front part of the support is fixedly connected with the blade through a bolt, and the rear part of the support is fixedly connected with the vertical shaft through a bolt.

5. The vertical axis wind turbine as defined in claim 1, wherein: the bracket is made of a stainless steel plate.

6. The vertical axis wind turbine as defined in claim 1, wherein: the blades are lift type fan blades, and one or more resistance type fan blades are further mounted on the vertical shaft.

7. The vertical axis wind turbine as defined in claim 6, wherein: the resistance type fan blade is a wind cylinder adopting a semi-cylindrical blade.

8. The vertical axis wind turbine as defined in claim 7, wherein: and first disks are arranged at two ends of the air duct, a second disk is arranged on the vertical shaft, and the first disks are connected with the second disks through bolts.

9. The vertical axis wind turbine as defined in claim 8, wherein: the resistance type fan blade and the lift type fan blade are both made of aluminum alloy.