CN201963486U - Modularized vertical axis wind-driven generator - Google Patents

Abstract

The utility model discloses a modular vertical axis wind power generator, which comprises a tower column, on which at least two vertical axis wind power generator modules are arranged up and down in sequence, and the wind power generator module includes a wind wheel module and a The connected generator, the wind wheel module includes a support wheel and several blades, the blades are vertically arranged, and connected to the tower through the support wheel, at least one of which is connected to the generator between the support wheel and the tower, and the stator of the generator is fixed on the tower On the column, the rotor of the generator is connected to the supporting wheels. The utility model breaks free from the traditional thinking constraints of one fan and one wind wheel, and can conveniently manufacture high-power and extra-high-power vertical-axis wind-driven generators. It can make full use of the wind resources distributed in the height direction. A series of high-power or extra-high-power wind turbines of different specifications can be produced with only a small amount of basic module production technology equipment, which greatly reduces design and manufacturing costs. Therefore, it has good application prospects and market prospects.

Description

Modular vertical axis wind turbine

technical field

The utility model relates to a vertical-axis wind power generator, in particular to a modular vertical-axis wind power generator. The utility model also provides a design method of the high-power modular vertical axis wind power generator.

Background technique

Vertical-axis wind turbines have been rapidly popularized in the field of wind power generation due to their advantages of reasonable stress, low noise, stable operation, and convenient maintenance. The development of high-power and ultra-high-power wind turbines has become the trend of wind power generation. The vertical axis wind power generator includes a tower column, a wind wheel sleeved on the tower column, and a generator placed on the tower column between the tower column and the wind wheel. The wind wheel includes a support wheel and blades, and the support wheel is supported by several The blade is connected with the support rod, and the support rod is connected with the rotating part of the generator. The rotation of the wind wheel drives the rotor of the generator fixed on the tower column to rotate and generate electricity. Conventional measures to increase the power generation of vertical-axis wind turbines are to increase the diameter and height of the wind rotor, that is, to increase the length of the blades. These methods have relatively large limitations. The larger the diameter of the wind wheel, the longer the length of the support rods connecting the blades. Since the support rods with blades are cantilever beams, the longer the length of the support rods, the easier it is for the blades to deflect. Excessive tilting requires the cross-sectional size of the support rod to be made larger and larger, which will affect the aerodynamic performance of the wind rotor, increase wind resistance, and greatly increase the manufacturing cost and difficulty of the wind rotor. The wheel radius will reduce the effective utilization rate of the wind field area, reduce the installed density of wind turbines, and cannot make full use of the advantage of the vertical axis wind turbines in the height direction, which can take the advantage of intercepting the wind at any time; and increasing the length of the blades, due to the natural wind has The characteristics of higher heights and lower heights are greater. Too long blades increase the wind torque difference between the upper and lower blades, which will cause the blades to bear a large torque and be easily damaged, and it will also have a great impact on the configuration of the generator. difficulty.

Therefore, it is usually difficult to increase the power of vertical axis wind turbines, and it is already very difficult to reach the megawatt level. It is even more difficult to increase the power. On the other hand, different conditions of use and users often require different powers. Designing and developing high-power vertical-axis fans for different power requirements not only requires high development costs, but also high manufacturing costs due to different specifications. For this reason, the modularized and serialized design and manufacture of vertical axis wind turbines has very important scientific and economic significance.

Utility model content

The purpose of this utility model is to overcome the difficulties in the design and manufacture of high-power vertical-axis wind-driven generators, and provide a modular vertical-axis wind-driven generator. As a module, you can easily obtain super-high-power vertical-axis wind turbines with various powers, which greatly reduces the design and manufacturing costs of super-high-power vertical-axis wind turbines.

In order to achieve the above object, the technical solution of the utility model is:

A modular vertical-axis wind power generator, comprising a tower, on which at least two vertical-axis wind power generator modules are arranged up and down in sequence, and each of the wind power generator modules includes a wind wheel module and a The connected generator, the wind wheel module includes at least one supporting wheel and a number of blades, the blades are vertically arranged and connected to the tower through the supporting wheel, wherein at least one of the supporting wheels is connected to the tower The generator is connected, the stator of the generator is fixed on the tower, and the rotor of the generator is connected with the support wheel.

In a wind wheel module, there are two or more supporting wheels, and a generator can be arranged between each supporting wheel and the tower column, or only a part of the supporting wheels and the tower column can be provided with a generator. machine, while the other supporting wheels are connected with the tower through bearings.

The support wheel connected to the generator includes a number of support rods, the number of which is the same as the number of the blades, and each of the support rods is fixed on an external rotor of the generator evenly distributed in the circumferential direction, and the blades It is fixedly connected with the outer end of the support rod.

In one fan module, there are two or more support wheels, and the number of support bars in each support wheel is equal; each support bar in each support wheel is arranged on a horizontal plane , the support rods in each support wheel are respectively aligned on the upper and lower floors, each of the blades is fixedly connected to the outer end of one of the support rods in each of the support wheels, and each of the support wheels The inner ends of the support rods are uniformly fixed in the circumferential direction on a wind turbine hub or an external rotor of the generator. Among all the support wheels, the support rods in at least one of the support wheels are fixed on a The generator is placed on the external rotor and connected to the wind generator.

Each of the wind rotor modules is of the same specification, or is of a different specification.

The diameters of the wind wheel modules may be different, and the arrangement rule may be: the diameter of the wind wheel modules above is the smallest; or, the diameters of the wind wheel modules are the same. It may also be that the upper wind wheel module has a larger diameter. It is also possible that the wind wheel module on the above is neither the largest nor the smallest.

When the diameters of the wind rotor modules are different, the arrangement order of the wind rotor modules below the uppermost wind rotor module may be that the diameters are arranged from small to large, or from large to small, Or the diameters are arranged in different sizes.

Preferably, 2 or 3 vertical axis wind power generator modules are stacked on the tower column.

In the design of the modular vertical-axis wind power generator, two or more vertical-axis wind power generator modules with the same or different specifications, that is, with the same or different power generation, are produced first, and then the two or More than two vertical-axis wind power generator modules are arranged on a tower vertically and sequentially.

A series of modularized vertical-axis wind generators with different powers are produced by combining several vertical axis wind generator modules in different ways.

Specifically, by selecting the number of modules, selecting modules of different or the same specifications, obtaining two or more modules, and arranging the selected modules up and down to form a modular vertical axis wind power generator with required power machine.

The design concept of the present utility model is to develop a small number of vertical-axis fans with relatively small power in advance as the basic vertical-axis wind power generator module. Then they are superimposed in the height direction according to needs, and wind turbines with various power specifications can be obtained by different combinations, especially vertical axis wind turbines that can be combined to produce extremely high power. For example, two basic modules of vertical axis wind turbines of A MW and B MW are developed in advance, and several vertical axis wind turbine modules of A MW and B MW are produced. The power of the vertical axis wind turbine modules is A single vertical-axis wind turbine module is used to form a wind turbine, which is defined by the low-level aircraft position when stacking multiple layers. The vertical-axis wind turbine module is stacked upwards. Every time a machine position is raised, due to the gradient distribution of wind speed in the height direction, Its power will increase. For example, if a module with A or B megawatts is installed on the first floor, if it is installed on the second floor from bottom to top, its power will be increased to A1=A+ΔA, B1=B+ΔB ; If it is installed on the third floor from bottom to top, its power is A2=A+ΔA1, B2=B+ΔB1. If two layers are superimposed, the A and B modules can be combined to form a series of vertical axis wind turbines with four powers: A+B1, A+A1, B+A1, and B+B1. If 3 layers are superimposed, a series of vertical axis wind turbines with 8 powers can be obtained. In this way, although only two types of vertical axis wind turbines, A and B, have actually been developed, through the superposition of 2 or 3 layers, it is actually equivalent to the development of 2+4+8=14 types of wind turbines, from which it can be conveniently screened out Effective family of vertical axis wind turbines.

Generally, the number of layers of the vertical axis wind turbine module in the height direction should be controlled at or below 3 layers. Increasing the number of layers will increase the difficulty of tower design and manufacture, but on the premise that the strength of the tower can be guaranteed, it is also possible More layers can be used to further improve space utilization. In the same way, if 3 basic modules are developed, only 3 layers of superposition can be used to obtain 3+9+27=39 kinds of vertical-axis wind turbines with different powers, from which a more detailed vertical-axis wind power generation can be established machine series. The obvious advantage of this modular stacking method is that only a few modules need to be prepared for tooling and production, and a variety of vertical axis wind turbines can be combined and produced in series.

Considering the rationality of the force on the tower column, it is more reasonable to place the larger-diameter wind rotor on the bottom and the smaller-diameter wind rotor on the top when stacking. However, due to the large incoming wind energy from the upper layer, it is more reasonable to configure the upper layer with a larger diameter wind wheel from the perspective of wind energy utilization. When establishing a fan series, the rationality of force and the utilization efficiency of wind energy must be considered comprehensively. Both stacking methods are acceptable, provided that the strength of the tower where the lower vertical axis wind turbine module is located must be sufficient, and the design and manufacturing technology of the tower is very mature.

Another advantage of adopting the laminated structure design to manufacture high-power vertical-axis fans is that it can increase the installed density in the wind field and improve the area utilization of the wind field. For example, by superimposing a 2MW module and a 1MW module, a 3.2MW vertical axis wind turbine can be obtained, and its footprint in the wind farm is determined by the diameter of the wind rotor of the 2MW module, while a single 3.2MW wind turbine, Even ignoring manufacturing difficulties and costs, its footprint is much larger than that of a 2MW wind turbine.

The modularized vertical-axis wind-driven generator provided by the utility model breaks free from the conventional thinking of one fan and one wind wheel, and provides a new way of thinking for the design and manufacture of high-power and extra-high-power vertical-axis wind-driven generators. Each vertical-axis wind turbine module can rotate independently, so it can make full use of the wind resources in the form of gradient distribution in the height direction. The utility model not only provides a convenient way to design and manufacture high-power or extra-high-power vertical-axis wind-driven generators, but also requires only a small amount of production technology equipment for basic vertical-axis wind-driven generator modules due to its modular characteristics. , can produce a series of high-power or extra-high-power wind-driven generators of different specifications, which greatly reduces the design and manufacture cost of high-power or extra-high-power vertical-axis wind-driven generators. By using the utility model, the vertical-axis wind-powered generator can be conveniently The generating power of the machine can be increased to several megawatts or even more than ten megawatts, so it has a good application prospect and market prospect.

Description of drawings

Fig. 1 is a structural schematic diagram of a vertical axis wind power generator formed by stacking basic vertical axis wind power generator modules provided by the present invention.

Detailed ways

As shown in Figure 1, a modular vertical axis wind power generator includes a tower column 8, on which three vertical axis wind power generator modules are arranged up and down in sequence, namely module 1, module 2 and module 3 . Each of the wind power generator modules includes a wind rotor module and two generators connected thereto. The wind rotor module includes a support wheel and a plurality of blades 4, and the blades 4 are arranged vertically. The rotor connection of the generator.

A support wheel includes a number of support rods, the number of which is the same as the number of blades, and each of the support rods is uniformly fixed in the circumferential direction on an external rotor of a generator, and the blades are fixed to the outer ends of the support rods connect. The support rods may not be on a horizontal plane. A preferred structure is that each support rod in a support wheel is arranged on a horizontal plane, and a wind wheel module includes two or more support wheels. Generators can be arranged between all the support wheels and the tower columns, and generators can also be connected on a part of the support wheels, while bearings are arranged between other support wheels and the tower columns.

In the example shown in Figure 1, in each module, there are two support wheels, and the number of support bars 5 in each support wheel is equal; each support bar in each support wheel 5 is arranged on a horizontal plane, and the support rods in each support wheel are respectively aligned on the upper and lower floors, and each of the blades 4 is connected to the outer end 51 of one of the support rods 5 in each of the support wheels. Fixedly connected, the inner ends of the support rods 5 in each of the support wheels are evenly fixed in the circumferential direction on a generator external rotor 7, and the generator external rotor 7 is sleeved on the corresponding power generator set on the tower column. A generator is formed on the machine stator.

The design method provided by the utility model is to first produce two or more vertical-axis wind power generator modules with the same or different specifications, that is, with the same and/or different power generation, and then combine the two or more Wind turbine modules of different or the same specification are stacked in series in the height direction by towers to obtain high-power or extra-high-power vertical-axis wind turbines, that is, one tower consists of 8, 2-3 or more The vertical axis wind turbine module and a control system form a high-power vertical axis wind turbine. As shown in the example of Figure 1, modules of three or more specifications are made according to needs, and then, by selecting the number of modules and modules of different or same specifications, two or more modules are obtained, for example Three modules of different specifications are selected, module 1, module 2, and module 3 are three wind wheel modules whose diameter and blade length gradually decrease upward. Arrange the selected modules up and down to form a modular vertical axis wind power generator with required power. For example, three modules of different specifications are selected, and arranged on the tower column from top to bottom according to the diameter from small to large according to different diameters. Make wind turbines with the power required by customers.

It is also possible to set several vertical-axis wind turbine modules of the same specification on the tower column 8, each module rotates independently to generate electricity under the wind force, and its speed is independent of each other, which can effectively cope with the gradient distribution of wind force in the height direction and improve wind energy utilization.

The high-power modular vertical axis wind power generator provided by the utility model is composed of a tower column, two or more fan modules that can rotate independently and a comprehensive control system to form a complete system. A wind turbine is composed of two or more wind rotors, which breaks free from the traditional thinking of one wind turbine and one wind rotor, and provides a new method for the design and manufacture of high-power and extra-high-power vertical-axis wind turbines.

The vertical-axis wind turbine modules in different positions may be modules of the same specification or modules of different specifications.

From bottom to top, the diameter of the modules can be gradually reduced, as shown in FIG. 1 , or it can be reversed. In order to fully utilize the large wind energy resources at high places, a wind wheel module with a large diameter can be used. Or irregular arrangement.

Like this, by a few modules, just can form the series of high-power wind power generator by the utility model. It is also possible to design a small number of modules of several specifications, through different combinations, to manufacture a variety of power wind generators, to meet the needs of various customers in terms of power and other aspects.

Each of the vertical axis wind power generator modules may have its own tower, and in superposition, the towers connected to each module are connected together through flanges or welding.

A lightning rod 9 may be provided on the upper end of the pylon 8 .

Claims (8)

1. A modular vertical axis wind turbine comprising a tower, wherein: at least two vertical axis wind turbine modules are sequentially arranged on the tower column from top to bottom, each wind turbine module comprises a wind wheel module and a generator connected with the wind wheel module, each wind wheel module comprises at least one supporting wheel and a plurality of blades, the blades are vertically arranged and are connected with the tower column through the supporting wheels, the generator is connected between at least one supporting wheel and the tower column, a stator of the generator is fixed on the tower column, and a rotor of the generator is connected with the supporting wheels.

2. The modular vertical axis wind turbine as claimed in claim 1, wherein: in one wind wheel module, the number of the supporting wheels is two or more, a generator is arranged between each supporting wheel and the tower column, or the generator is arranged between only one part of the supporting wheels and the tower column, and the other supporting wheels are connected with the tower column through bearings.

3. Modular vertical axis wind turbine according to claim 1 or 2, characterized in that: the supporting wheel connected with the generator comprises a plurality of supporting rods, the number of the supporting rods is the same as that of the blades, the supporting rods are circumferentially and uniformly fixed on an external rotor of the generator, and the blades are fixedly connected with the outer ends of the supporting rods.

4. The modular vertical axis wind turbine as claimed in claim 2, wherein: the number of the supporting rods in each supporting wheel is equal; the supporting rods in each supporting wheel are arranged on a horizontal plane, the supporting rods in each supporting wheel are respectively arranged in an aligned mode on the upper layer and the lower layer, each blade is fixedly connected with the outer end of one supporting rod in each supporting wheel, the inner end of each supporting rod in each supporting wheel is circumferentially and uniformly fixed on a wind wheel hub or an external generator rotor, and the supporting rods in at least one supporting wheel are fixed on the external generator rotor and connected with a wind driven generator.

5. The modular vertical axis wind turbine as claimed in claim 1, wherein: each wind wheel module is a wind wheel with the same specification or a wind wheel with different specifications.

6. Modular vertical axis wind turbine according to claim 1 or 2 or 4 or 5, characterized in that: the diameters of the wind wheel modules are different; or,

the diameters of the wind wheel modules are the same; or,

the diameters of the wind wheel modules are different, and the arrangement rule is as follows: the diameter of the upper wind wheel module is the largest; or the diameter of the upper wind turbine module is smallest; alternatively, the diameter of the above wind turbine modules is smaller than the largest diameter module but larger than the smallest diameter module, i.e. not the largest, nor the smallest, of all the modules.

7. The modular vertical axis wind turbine as claimed in claim 6, wherein: when the diameters of the wind wheel modules are different, the wind wheel modules below the uppermost wind wheel module are arranged in a sequence that the diameters are arranged from small to large, or in a sequence that the diameters are arranged from large to small, or in a staggered arrangement.

8. The modular vertical axis wind turbine as claimed in claim 1, wherein: and 2 or 3 vertical axis wind turbine modules are stacked on the tower column.