CN202832977U - Balanced vertical axis wind generating set - Google Patents

Abstract

A balanced vertical axis wind power generating set, including a column, a wind blade drive assembly and its wind wheel set, and a vertical vertical axis slewing system, the vertical vertical axis slewing system is provided with an outer rotor permanent magnet generator, an upper column and a stabilizing wheel; the outer rotor The lower shaft of the inner stator of the permanent magnet generator is fixedly connected to the upper part of the column; one end of the upper column is connected to the upper end cover of the outer rotor of the outer rotor permanent magnet generator, and a first connecting piece is fixedly connected; one end of the upper bracket is connected to the first The connector is fixedly connected, and the other end is fixedly connected to the upper part of the lift-type blade; one end of the middle bracket is connected to the upper end cover of the outer rotor of the outer rotor permanent magnet generator, and the other end is fixedly connected to the middle part of the lift-type blade; one end of the lower bracket is passed through the second The second connecting piece is connected with the lower end cover of the outer rotor of the outer rotor permanent magnet generator, and the other end is fixedly connected with the lower part of the lift-type blade; the stabilizing wheel is connected with the lower end of the second connecting piece, and its rotating part is arranged on the side of the column. It has the characteristics of improving stability and balance, simple structure, low comprehensive cost and easy maintenance.

Description

A balanced vertical axis wind turbine

technical field

The utility model relates to the technology of a vertical axis wind power generator set, in particular to a balanced vertical axis wind power generator set.

Background technique

Wind power generation has a history of more than 150 years. After analyzing the atmospheric circulation model, scientists found that the wind energy contained in the convective air masses in the lower atmosphere is very huge, which is inexhaustible and available to human beings. One of the exhausted renewable energy sources. Therefore, under the situation that human beings are facing the energy crisis that is gradually intensified, the research and development of wind power generation has more and more important and far-reaching practical significance. In some developed countries, such as the United States, the Netherlands, Denmark, France, Germany, Italy and other countries, wind power has played a pivotal role in their domestic power structure. In my country, only a few areas, such as Xinjiang, Inner Mongolia, Gansu, Guangdong's Nan'ao and Shanwei Red Bay, and Fujian's Zhangzhou Dongshan Island, have wind power stations, and their total installed capacity is less than 62,000MW, accounting for the proportion of my country's power structure. Less than 3%.

In the prior art, in the prior art, the vertical axis wind generator can be divided into two main types: one is the lift type vertical axis wind generator utilizing the lift of the airfoil structure to do work, and the most typical one is the Darrieux ( Darrieus) type wind turbines, and the manufacturing technology of vertical axis wind turbines of many manufacturers is to make some improvements on the basis of the operating principle of the airfoil structure; the other type is drag vertical axis wind turbines , its prototype structure is evolved from the structure of the wind cup anemometer, and its principle is to use the resistance difference between the front and back of the wind blade to do work when it rotates horizontally.

The wind energy utilization rate of the lift type vertical axis wind turbine can be as high as 42% during normal operation, but it has the following defects: in the low wind speed state, the force bearing area is small, and the starting torque generated is small, and it usually needs to be started under natural conditions. The start can only be achieved by the wind drive of four or more winds, so that for large and medium-sized wind turbines, it is usually necessary to equip a motor auxiliary starting device to force the start, which makes the structure of the whole machine complex and the cost increases; and in low wind gusts The power consumption is also relatively large.

The wind rotor of the resistance type vertical axis wind turbine can obtain a relatively large starting torque; however, due to its structure, a lateral thrust is generated around the wind rotor, resulting in a lower rotational speed of the wind rotor.

Therefore, the vertical axis wind generators in the prior art are generally suitable for medium and small power wind generators. Although people continue to make some new improvements to the structure of the wind rotor blades, such improvements are often The improvement is limited to certain aspects of some of the local structures, which leads to the above defects in this type of vertical axis wind turbine, and the improvement technology is still not comprehensive enough, especially in terms of cost and deformation of the blade structure. It is still difficult to make a substantial breakthrough, so the utilization efficiency and comprehensive cost of wind energy are still not ideal.

The Chinese invention patent (patent number: ZL201020209996.4 discloses a "rail-type large-scale vertical axis wind power generator set", its structure is mainly as follows: the blade is a lift-type blade, the blade is fixed on the blade bracket, and the blade bracket is connected to Rotary system. By adopting a relatively stable rotary system, the strength of the blades can be improved so that they can withstand relatively large typhoons and are suitable for large and medium-sized wind turbines.

However, the above-mentioned patents have the following problems: if the centrifugal force imbalance occurs during the movement of the lift-type blades, it is easy to cause the blades to be skewed and twisted; The material consumption of wind turbines is large, the overall manufacturing cost is high, and it is not easy to maintain, and it is not conducive to industrial production and the promotion and application of small wind turbines in the market.

Therefore, in view of the existing problems in the prior art, it is urgent to provide a wind turbine that can improve stability and balance, has a simple structure, low overall cost, is easy to maintain, and is conducive to industrial production and the popularization and application of large and medium-sized wind turbines in the market. The technology of vertical axis wind turbines is particularly important.

Contents of the invention

The purpose of the utility model is to avoid the deficiencies in the prior art and provide a vertical axis wind power generating set that can improve stability and balance, has a simple structure, low overall cost, and is easy to maintain.

The purpose of this utility model is achieved through the following technical solutions:

Provided is a balanced vertical axis wind power generator set, comprising a column and a blade drive assembly located on the column, the blade drive assembly includes a wind wheel set and a vertical vertical axis rotation system, the wind wheel set is set There are two or more lift-type blades and two or more fan blade brackets correspondingly arranged on the vertical vertical axis rotation system, and the fan blade brackets include an upper bracket, a middle bracket and a lower bracket,

The vertical vertical axis slewing system is provided with an outer rotor permanent magnet generator, an upper column and a stabilizing wheel;

The lower shaft connected to the inner stator of the outer rotor permanent magnet generator is fixedly connected to the upper part of the column;

One end of the upper column is connected to the upper end cover connected to the outer rotor of the outer rotor permanent magnet generator, and the upper column is fixedly connected with a first connecting piece;

One end of the upper bracket is fixedly connected to the first connector, and the other end of the upper bracket is fixedly connected to the upper part of the lift blade;

One end of the middle bracket is connected to the upper end cover connected to the outer rotor of the outer rotor permanent magnet generator, and the other end of the middle bracket is fixedly connected to the middle of the lift blade;

One end of the lower bracket is connected to the lower end cover of the outer rotor permanent magnet generator connected to the outer rotor through a second connector, and the other end of the lower bracket is fixedly connected to the lower part of the lift blade;

The stabilizing wheel is connected to the lower end of the second connecting member, and the rotating part of the stabilizing wheel is arranged beside the column.

Wherein, the upper bracket, the middle bracket, and the lower bracket are respectively located on the lift-type blades and arranged equidistantly, and the connection between the middle bracket and the lift-type blades is located at the level of the lift-type blades. center line.

Wherein, the upper bracket, the middle bracket and the lower bracket are arranged parallel to each other.

Wherein, one end of the upper bracket, one end of the middle bracket, and one end of the lower bracket are welded to the lift-type blades respectively.

Wherein, the second connecting piece is set as a second connecting piece of a sleeve structure, flange portions are provided at both ends of the second connecting piece, and the flange portion at one end of the second connecting piece is connected to the lower end of the second connecting piece. The cover is connected, and the flange part at the other end of the second connecting piece is respectively connected with the lower bracket and the stabilizing wheel.

Wherein, the upper part and/or the lower part of the lift-type blade is provided with an extension part.

Wherein, the upper end cover is provided with a short shaft coaxial with the upper column, and the upper column is flange-connected with the short shaft.

Wherein, the upper end of the upper column is provided with a lamp post.

Wherein, the thickness of the middle bracket is greater than or equal to the thickness of the upper bracket and/or the thickness of the lower bracket.

Wherein, the stabilizing wheel includes a stabilizing wheel bracket, a roller and a bearing, the stabilizing wheel bracket is fixedly connected to the lower end of the second connector, the inner ring of the bearing is connected to the bearing shaft of the stabilizing wheel bracket, and the The outer ring of the bearing is connected to the bearing hole of the roller, the outer circumference of the roller is separated from the column in normal working conditions, and the outer circumference of the roller is in contact with the column in sudden crosswind conditions.

The beneficial effects of the utility model:

A balanced vertical axis wind power generating set, since it includes a column and a blade drive assembly located on the column, the blade drive assembly includes a wind rotor group and a vertical vertical shaft rotation system, and the wind rotor group is provided with two or two The above-mentioned lift-type blades and two or more fan blade brackets correspondingly arranged in the vertical vertical shaft rotation system, the fan blade brackets include an upper bracket, a middle bracket and a lower bracket, and the vertical vertical shaft rotation system is provided with an outer rotor permanent magnet generator. Machine, upper column and stabilizing wheel; the lower shaft of the outer rotor permanent magnet generator connected with the inner stator is fixedly connected to the upper part of the column; one end of the upper column is connected with the upper end cover of the outer rotor permanent magnet generator connected with the outer rotor, and the upper The column is fixedly connected with a first connecting piece; one end of the upper bracket is fixedly connected with the first connecting piece, and the other end of the upper bracket is fixedly connected with the upper part of the lift blade; one end of the middle bracket is connected with the outer rotor permanent magnet generator and the outer rotor The connected upper end cover is connected, the other end of the middle bracket is fixedly connected with the middle part of the lift blade; one end of the lower bracket is connected with the lower end cover of the outer rotor permanent magnet generator connected to the outer rotor through the second connecting piece, and the other end of the lower bracket The part is fixedly connected with the lower part of the lift-type blade; the stabilizing wheel is connected with the lower end of the second connecting part, and the rotating part of the stabilizing wheel is arranged on the side of the column.

Therefore, by using the middle bracket to bear the load, while the upper bracket, the middle bracket and the lower bracket constrain the lift type blade, the upper bracket and the lower bracket are located on both sides of the middle bracket, and are correspondingly connected with the outer rotor of the outer rotor permanent magnet generator, so that When the lift-type blade is running at high speed, the upper bracket and the lower bracket can provide the necessary constraints, and balance the force on the upper and lower parts of the lift-type blade to synchronously drive the outer rotor of the outer rotor permanent magnet generator and output current, thereby improving The stability and balance of the system are improved, and the setting of the stabilizing wheel can improve the anti-swing performance of the wind turbine and make the wind turbine run smoothly; at the same time, it also simplifies the parts, reduces the manufacturing cost, and is easy to install and maintain .

Description of drawings

The utility model is further described by using the accompanying drawings, but the embodiments in the accompanying drawings do not constitute any limitation to the present utility model.

Fig. 1 is a structural schematic diagram of a balanced vertical axis wind power generating set of the present invention.

Fig. 2 is a schematic diagram of the structure of "A——A" in Fig. 1 .

Fig. 3 is a partially enlarged structure schematic diagram of a stabilizing wheel part of a balanced vertical axis wind power generating set of the present invention.

In Figure 1, Figure 2, Figure 3 include:

1—column, 2—upper bracket, 3—middle bracket, 4—lower bracket,

5——outer rotor permanent magnet generator, 6—lift blade, 7—extension, 8—lamp post,

9—upper column, 10—first connecting piece, 11—second connecting piece, 12—stabilizing wheel,

121---stabilizing wheel support, 122---roller, 123---bearing.

Detailed ways

The utility model is described in further detail in conjunction with the following examples:

Example 1

A balanced vertical axis wind power generating set of the present utility model is shown in Fig. 1, Fig. 2 and Fig. 3:

It includes a column 1 and a fan blade drive assembly located on the column 1. The fan blade drive assembly includes a wind wheel set and a vertical vertical axis rotation system. The wind wheel set is provided with two or more lift-type blades 6 and correspondingly arranged For two or more fan blade supports of the vertical vertical axis rotation system, the fan blade support includes an upper support 2, a middle support 3 and a lower support 4, wherein:

The vertical vertical axis slewing system is provided with an outer rotor permanent magnet generator 5, an upper column 9 and a stabilizing wheel 12;

The lower shaft connected to the inner stator of the outer rotor permanent magnet generator 5 is fixedly connected to the upper part of the column 1;

One end of the upper column 9 is connected to the upper end cover of the outer rotor permanent magnet generator 5 connected to the outer rotor, and the upper column 9 is fixedly connected with a first connecting piece 10;

One end of the upper bracket 2 is fixedly connected to the first connecting piece 10, and the other end of the upper bracket 2 is fixedly connected to the upper part of the lift blade 6;

One end of the middle bracket 3 is connected to the upper end cover of the outer rotor permanent magnet generator 5 connected to the outer rotor, and the other end of the middle bracket 3 is fixedly connected to the middle of the lift-type blade 6;

One end of the lower bracket 4 is connected to the lower end cover of the outer rotor permanent magnet generator 5 connected to the outer rotor through the second connecting piece 11, and the other end of the lower bracket 4 is fixedly connected to the lower part of the lift blade 6;

The stabilizing wheel 12 is in contact with the lower end of the second connecting member 11, and the rotating part of the stabilizing wheel 11 is arranged beside the column.

By using the middle bracket 3 to bear the load, the upper bracket 2, the middle bracket 3 and the lower bracket 4 constrain the lift-type blade 6 at the same time, the upper bracket 2 and the lower bracket 4 are located on both sides of the middle bracket 3, and correspond to the outer rotor permanent magnet generator. The outer rotor is connected so that when the lift-type blade 6 is running at high speed, the upper bracket 2 and the lower bracket 4 can provide the necessary constraints, and balance the force on the upper and lower parts of the lift-type blade 6 to synchronously drive the outer rotor permanent magnet generator 5 and output current, thereby improving the stability and balance of the system, and the setting of the stabilizing wheel 12 can improve the anti-swing performance of the wind turbine, so that the wind turbine runs smoothly; at the same time, it also simplifies the parts , reduces manufacturing cost, and facilitates installation and maintenance.

Specifically, the upper support 2 , the middle support 3 , and the lower support 4 can be located on the lift-type blade 6 and arranged equidistantly, and the connection between the middle support 3 and the lift-type blade 6 is located on the horizontal centerline of the lift-type blade 6 . In order to make the constraint of the upper bracket 2, the middle bracket 3 and the lower bracket on the lift type blade 6 more uniform, the operation of the lift type blade 6 is more stable.

Moreover, the upper bracket 2, the middle bracket 3 and the lower bracket 4 can also be arranged parallel to each other. For easy installation and positioning.

Specifically, one end of the upper bracket 2 , one end of the middle bracket 3 , and one end of the lower bracket 4 are respectively welded to the lift-type blade 6 . The welding connection structure is adopted, and the fixing performance is better.

Specifically, the second connecting piece 11 can be set as the second connecting piece 11 of the sleeve structure, the two ends of the second connecting piece 11 are provided with flange parts, and the flange part at one end of the second connecting piece 11 is connected with the outer rotor permanent magnet to generate electricity. The lower end cover of the motor 5 connected with the outer rotor is connected, and the flange part at the other end of the second connecting piece 11 is connected with the lower bracket 4 and the stabilizing wheel 12 respectively.

When the lift-type blade 6 is rotated under force, it drives the upper bracket 2, the middle bracket 3 and the lower bracket 4 to rotate, and drives the outer rotor of the outer rotor permanent magnet generator 5 to rotate and cut the magnetic force line, and drives the outer rotor permanent magnet generator 5 to run and output current .

Example 2

A balanced vertical axis wind power generating unit of the present utility model, as shown in Figure 1 and Figure 2, the main technical solution of this embodiment is basically the same as that of Embodiment 1, and the features not explained in this embodiment are adopted to implement The explanation in Example 1 will not be repeated here. The difference between this embodiment and Embodiment 1 is that: the upper part and/or the lower part of the lift blade 6 is provided with an extension part 7 . The top and/or bottom all increase the extension 7, to improve the wind-bearing area of the lift type blade 6, and improve the power generation efficiency, especially the bottom of the lift type blade 6 is provided with an extension portion 7, which can make the center of gravity of the lift type blade 6 The drop effectively improves the anti-swing capability of the wind turbine and makes the operation more stable.

Specifically, both the upper and lower parts of the lift-type blade 6 may be provided with extensions 7 .

Moreover, the extension part 7 can also be set to have a length greater than or equal to the distance between the upper bracket 2 and the middle bracket 3 , and between the middle bracket 3 and the lower bracket 4 and the lift-type blade 6 . In order to further increase the wind-bearing area of the lift-type blades and improve the power generation efficiency, especially the lower part of the lift-type blades is provided with a longer extension, which can further lower the center of gravity of the lift-type blades, and more effectively improve the wind power generator. Anti-swing ability makes the operation more stable.

Specifically, the lift-type blade may be configured as a lift-type blade whose cross section is in the shape of an airfoil. In order to make the fluid performance of the lift type blade better, the resistance is smaller, and the operation efficiency is higher.

Example 3

A balanced vertical axis wind power generating set of the present utility model, as shown in Figure 1, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2, and the features not explained in this embodiment are adopted The explanations in Embodiment 1 or Embodiment 2 will not be repeated here. The difference between this embodiment and embodiment 1 or embodiment 2 is that: the upper end cover of the outer rotor permanent magnet generator 5 can be provided with a short shaft coaxial with the upper column 9, and the upper column 9 is connected to the short shaft flange. In order to install the upper column.

Specifically, the upper end of the upper column 9 may also be provided with a lamp column 8 . In order to be widely used in lighting or warning occasions such as street lights, navigation lights, river navigation, high-altitude warning lights, etc. Make it more energy-saving and environmentally friendly, and have a wider range of applications.

Example 4

A balanced vertical axis wind power generating set of the present utility model, as shown in Figure 1, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2 or Embodiment 3, and no explanation is given in this embodiment The features of , using the explanations in Embodiment 1 or Embodiment 2 or Embodiment 3, will not be repeated here. The difference between this embodiment and embodiment 1 or embodiment 2 or embodiment 3 is that the thickness of the middle bracket 3 is greater than or equal to the thickness of the upper bracket 2 and/or the thickness of the lower bracket 4 .

Specifically, the thickness of the upper bracket 2 and the thickness of the lower bracket 4 are set to be the same, and the thickness of the middle bracket 3 is set to be 1.5 times the thickness of the upper bracket 2 or the thickness of the lower bracket 4 . Since the middle bracket 3 plays a major load-bearing role, the thicker thickness of the middle bracket 3 can make the load-bearing capacity stronger, so as to further improve the stability and safety of the wind power generating set.

Example 5

A balanced vertical axis wind power generating set of the present invention, as shown in Figure 3, the main technical solution of this embodiment is basically the same as that of Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4, in this embodiment Features that are not explained in , use the explanations in Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4, and will not be repeated here. The difference between this embodiment and Embodiment 1 or Embodiment 2 or Embodiment 3 or Embodiment 4 is that the stabilizing wheel 12 includes a stabilizing wheel bracket 121, a roller 122 and a bearing 123, and the connection between the stabilizing wheel bracket 121 and the second connector 11 The lower end is fixedly connected, the inner ring of the bearing 123 is connected with the bearing shaft of the stable wheel bracket 121, the outer ring of the bearing 123 is connected with the bearing hole of the roller, the outer circumference of the roller 122 is separated from the column 1 in normal working conditions, and the outer circumference of the roller is in the Crosswind sudden change working conditions are in contact.

Specifically, the roller 122 can be configured as an elastic roller.

Specifically, the roller 122 may also be an elastic roller made of rubber or polyester material.

Under normal working conditions, the outer circumference of the roller is separated from the column and maintains normal rotation; under sudden crosswind conditions, the outer circumference of the roller touches the column, and the sudden acceleration is buffered by the elastic friction of the roller, and the roller is elastically reset. Thereby, the stability of the fan blade support can be improved, and the side tilting and swaying of the fan blade support and the lift type blade can be prevented.

A balanced vertical axis wind power generating set of the utility model can meet the international standards of the external conditions of wind power generator operation:

1. The maximum wind speed is 55m/s, and it is 40m/s in alpine regions;

2. The normal operating temperature range of the unit is -20°C to +50°C, and in the alpine region is -25°C to +45°C;

3. The highest altitude for unit operation is 4000m;

4. The relative humidity is 95%;

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than limiting the protection scope of the present utility model. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should It is understood that the technical solution of the utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the utility model.

Claims (10)

1. A balanced vertical axis wind power generating set, comprising a column and a blade drive assembly positioned at the column, the blade drive assembly includes a wind wheel set and a vertical vertical shaft slewing system, the wind wheel set There are two or more lift-type blades and two or more fan blade brackets correspondingly arranged on the vertical vertical shaft rotation system, and the fan blade brackets include an upper bracket, a middle bracket and a lower bracket, It is characterized by: The vertical vertical axis slewing system is provided with an outer rotor permanent magnet generator, an upper column and a stabilizing wheel; The lower shaft connected to the inner stator of the outer rotor permanent magnet generator is fixedly connected to the upper part of the column; One end of the upper column is connected to the upper end cover connected to the outer rotor of the outer rotor permanent magnet generator, and the upper column is fixedly connected with a first connecting piece; One end of the upper bracket is fixedly connected to the first connector, and the other end of the upper bracket is fixedly connected to the upper part of the lift blade; One end of the middle bracket is connected to the upper end cover connected to the outer rotor of the outer rotor permanent magnet generator, and the other end of the middle bracket is fixedly connected to the middle of the lift blade; One end of the lower bracket is connected to the lower end cover of the outer rotor permanent magnet generator connected to the outer rotor through a second connector, and the other end of the lower bracket is fixedly connected to the lower part of the lift blade; The stabilizing wheel is connected to the lower end of the second connecting member, and the rotating part of the stabilizing wheel is arranged beside the column. 2. A balanced vertical-axis wind turbine according to claim 1, characterized in that: the upper support, the middle support, and the lower support are respectively located on the lift-type blades and arranged equidistantly, And the connection between the middle bracket and the lift-type blade is located on the horizontal centerline of the lift-type blade. 3 . A balanced vertical axis wind power generator set according to claim 2 , wherein the upper support, the middle support and the lower support are arranged parallel to each other. 4 . 4. A balanced vertical axis wind turbine according to claim 3, characterized in that: one end of the upper bracket, one end of the middle bracket, and one end of the lower bracket are respectively connected to the lift-type blades Solder connection. 5. A balanced vertical axis wind turbine according to claim 4, characterized in that: the second connecting piece is a second connecting piece of a sleeve structure, and the two ends of the second connecting piece are provided with A flange portion, the flange portion at one end of the second connecting piece is connected to the lower end cover, and the flange portion at the other end of the second connecting piece is respectively connected to the lower bracket and the stabilizing wheel. 6. A balanced vertical-axis wind turbine according to any one of claims 1 to 5, characterized in that: the upper and/or lower parts of the lift-type blades are provided with extensions. 7. A balanced vertical axis wind turbine according to any one of claims 1 to 5, characterized in that: the upper end cover is provided with a short axis coaxial with the upper column, and the upper column Connect with the short shaft flange. 8 . The balanced vertical axis wind power generating set according to claim 7 , wherein a lamp post is arranged at the upper end of the upper column. 9 . 9. A balanced vertical axis wind turbine according to any one of claims 1 to 5, characterized in that: the thickness of the middle support is greater than or equal to the thickness of the upper support and/or the lower support thickness of. 10. A balanced vertical axis wind turbine according to any one of claims 1 to 5, characterized in that: the stabilizing wheel includes a stabilizing wheel bracket, rollers and bearings, and the stabilizing wheel bracket is connected to the The lower end of the second connector is fixedly connected, the inner ring of the bearing is connected to the bearing shaft of the stable wheel bracket, the outer ring of the bearing is connected to the bearing hole of the roller, and the outer circumference of the roller is connected to the column in normal The working condition is separated, and the outer circumference of the roller is in contact with the column in a crosswind sudden change working condition.

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