Wind gathering type wind power generation device

Abstract

The utility model discloses a wind gathering type wind power generation device, which relates to the technical field of wind power generation, and comprises an outer wind gathering device, an inner wind gathering device and an inner wind gathering device, the rotating device comprises an outer ring and an inner ring which can rotate relatively, the outer ring is fixedly arranged in the mounting hole, and the rotating device can adopt a rotating bearing; the stator and the fixed ring are arranged on the outer ring; the inner ring is rotationally arranged in the outer ring as a rotor; and the multiple blades are evenly and fixedly arranged on the inner ring in a surrounding mode. The stator and the rotor of the wind driven generator are respectively arranged on the inner ring and the outer ring of the slewing device, and the blades are arranged on the inner ring, so that the blades can generate lift force under the driving of wind power to drive the inner ring to rotate relative to the outer ring, the rotor and the rotor of the generator rotate relatively, wind power generation is realized, and the wind sweeping area is increased; and the power generation efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a wind-gathering type wind power generation device. Background Art

[0002] Because most of the existing small wind turbines still use the traditional structural form, the swept area of ​​small horizontal axis wind turbines is limited, and the use of its passive yaw wind device increases the failure rate of the unit. At the same time, the purely mechanical passive yaw mechanism also greatly reduces the power generation of small units, and if an active yaw mechanism is used, the overall cost of the unit will be greatly increased; the existing vertical axis wind turbine units are difficult to achieve large-scale and mass production due to their complex unit structure, and there are also problems of complex installation and high cost during the installation process; at the same time, the overall cost of the unit is still high, the cost performance is low, and it is difficult to form a competitive advantage.

[0003] The two existing types of small wind power generation devices have various wind gathering forms. The wind gathering form of small horizontal axis wind turbines adopts a wind gathering device that can follow the rotation of the wind rotor. Most of them increase the wind gathering device in a small area around the wind rotor. The increase in the swept wind area is limited and the effect is not good. In addition, the blade structure of the wind rotor is traditional, and most of the blade structure plays a supporting role and does not mainly participate in the work. Utility Model Content

[0004] The utility model aims to provide a wind-collecting wind power generation device to solve the problems existing in the above-mentioned prior art, increase the wind sweeping area and improve the power generation efficiency.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a wind-collecting wind power generation device, comprising:

[0007] An external wind gathering device, wherein a mounting hole is provided on the external wind gathering device;

[0008] A slewing device, comprising an outer ring and an inner ring capable of relatively rotating, wherein the outer ring is fixedly arranged in the mounting hole, and the slewing device may adopt a slewing bearing;

[0009] Generator stator, the fixed ring is arranged on the outer ring, the inner ring is rotatably arranged inside the outer ring as a rotor, and the inner ring serves as the generator rotor and is also the fixed connection part of the blades;

[0010] The utility model arranges the stator of the wind generator on the outer ring of the rotary device, and the inner ring is used as the generator rotor. The blades are arranged on the inner ring, so that the blades can generate lift under the drive of wind, drive the inner ring to rotate relative to the outer ring, and then make the rotor and the mover of the generator rotate relative to each other, so as to realize wind power generation.

[0011] Optionally, the external wind gathering device is made of an unfolded wind gathering cloth, and the wind gathering cloth is provided with the installation hole.

[0012] Optionally, it also includes a support rod, the external wind gathering device is arranged between two of the support rods, and the two side edges of the external wind gathering device are fixedly connected to the support rod on the same side by buckles.

[0013] Optionally, an inner wind gathering device is provided at the hole in the center of the inner ring, and the outer wind gathering device is connected to the inner wind gathering device through an integrally formed connecting strip. The inner wind gathering device is made of wind gathering cloth, which further increases the wind gathering effect.

[0014] Optionally, the wind-gathering cloth is made of lightweight material.

[0015] Optionally, a plurality of holes are provided at the connection position between the inner wind focusing device and the outer wind focusing device, and the blades are located within the coverage size of the holes.

[0016] Optionally, the outer diameter of the inner wind focusing device is smaller than the inner diameter of the inner ring, and a plurality of integrally formed connecting strips are provided on the outer edge of the inner wind focusing device. The ends of the connecting strips are fixedly connected to the outer wind focusing device, and the blades are located in a hole formed between the inner wind focusing device and the outer wind focusing device.

[0017] Optionally, the length of the blade is smaller than the difference between the inner diameter of the inner ring and the outer diameter of the inner wind focusing device.

[0018] Compared with the prior art, the utility model has achieved the following technical effects:

[0019] The utility model is based on a cage-type asynchronous generator, in which the stator of the generator is mounted on the outer ring of a slewing bearing, and the inner ring of a slewing shaft serves as the rotor of the generator, thereby forming a large-sized ring-type generator; by adjusting the aerodynamic shape of the blades and cooperating with a wind gathering device, the rotor can receive wind in both forward and reverse directions and realize co-rotation, thereby eliminating a complex and easily damaged yaw mechanism, effectively reducing the cost of power generation, and increasing the wind sweeping area of ​​the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a front view of the wind-collecting wind power generation device of the utility model;

[0022] Figure 2 It is an axonometric diagram of the wind-collecting wind power generation device of the utility model.

[0023] In the figure: 1-support rod, 2-external wind focusing device, 3-external ring, 4-inner ring, 5-inner wind focusing device, 6-connecting strip. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model aims to provide a wind-collecting wind power generation device to solve the problems existing in the above-mentioned prior art, increase the wind sweeping area and improve the power generation efficiency.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] refer to Figure 1 and Figure 2As shown, the utility model provides a wind-collecting wind power generation device, whose structure includes an outer wind-collecting device 2 that is unfolded into a rectangular structure, and a mounting hole is opened on the outer wind-collecting device 2; a rotating device is arranged in the mounting hole, and the rotating device adopts a rotating bearing in a specific embodiment, which includes an outer ring 3 and an inner ring 4 that can rotate relative to each other, and the outer ring 3 is fixed in the mounting hole. The stator of the generator of the utility model is also an annular structure, which is fixed in the outer ring 3, and the inner ring 4 serves as the rotor of the generator to form a ring-type generator; a plurality of blades are evenly arranged on the inner wall of the inner ring 4; the utility model arranges the stator of the wind turbine generator on the outer ring 3 of the rotating device, and the inner ring 4 serves as the rotor of the generator, and the blades are arranged on the inner ring 4, so that the blades can generate lift under the drive of wind, drive the inner ring 4 to rotate relative to the outer ring 3, and then make the rotor and stator of the generator rotate relative to each other, so as to realize wind power generation.

[0028] Based on the cage-type asynchronous generator, the utility model installs the stator of the generator on the outer ring 3 of the slewing bearing, and uses the inner ring 4 of the slewing bearing as the generator rotor to form a large-sized ring-type generator. Except for the stator, rotor and blade structure, other components involved in the generator are the same as those of the existing generator, so no more details are given, because the power P of the generator is proportional to the rotor diameter D and the rotor length L under the same power, that is, D2*L. The layout of the utility model can increase the relative speed of the rotor and stator, greatly reduce the length direction dimensions of the generator rotor and stator, and the cost of the generator is also reduced accordingly.

[0029] In order to achieve a better wind gathering effect, the outer wind gathering device 2 of the utility model is made of an unfolded wind gathering cloth made of a lightweight material. The outer wind gathering device 2 is arranged between the two support rods 1, and the two sides of the outer wind gathering device 2 are fixedly connected to the support rod 1 on the same side by buckles, and a mounting hole is provided at the connection between the outer wind gathering device 2 and the outer ring 3. At the same time, an inner wind gathering device 5 made of the same material is also arranged in the annular space formed by the inner ring. This device is connected to the outer wind gathering device 2. No matter which direction the wind comes from on both sides, on the windward side of the inner wind gathering device 5 and the outer wind gathering device 2, Due to the action of wind, a slight deformation occurs along the wind direction, so that the inner wind focusing device 5 and the outer wind focusing device 2 form a structure similar to a micro-curved surface, which changes the air flow angle within the range of the wind focusing device, and evenly gathers the wind within the range of the wind focusing device to the position of the blades. The wind sweeping area of ​​the fan is increased by about eleven times through the two parts of the outer wind focusing device 2 and the inner wind focusing device 5. Because air is a compressed fluid, this wind focusing method can increase the wind speed and air volume that finally passes through the fan, which can greatly increase the power generation of a single unit without increasing the cost of the unit too much.

[0030] In one of the embodiments, the outer edge of the inner wind cohesion device 5 is fixedly connected to the outer wind cohesion device 2, so that the size formed by the unfolded inner wind cohesion device 5 is smaller than the turning circle formed by the blades, and a plurality of holes are provided at the connection position between the inner wind cohesion device 5 and the outer wind cohesion device 2, and the blades are located in the holes, so that the blades can operate normally without being interfered by the inner wind cohesion device 5. The arrangement of the inner wind cohesion device 5 of the utility model is not specifically limited. In another embodiment, the outer diameter of the inner wind cohesion device 5 is smaller than the inner diameter of the inner ring 4, and a plurality of integrally formed connecting strips 6 are provided on the outer edge of the inner wind cohesion device 5, and the ends of the connecting strips 6 are fixedly connected to the outer wind cohesion device 2, and the blades are located at the holes between the inner wind cohesion device 5 and the outer wind cohesion device 2. The length of the blade is smaller than the difference between the inner diameter of the inner ring 4 and the outer diameter of the inner wind focusing device 5. The blade only selects about 20% of the length of the tip part of the traditional blade, and the blade is fixed on the inner ring 4 which serves as the generator rotor. This method not only reduces the cost of the blade, but also makes the force on the blade more reasonable. By adjusting the aerodynamic shape of the wind wheel blade, the wind wheel can be affected by wind in both forward and reverse directions and rotate in the same direction, eliminating the complex and fragile yaw mechanism, and effectively reducing the cost of power generation.

[0031] The wind turbine of the utility model structure has no yaw-facing wind mechanism, so the choice of installation location is relatively limited. It is more suitable for installation and use in canyons, rivers, wind vents, fields and other locations where the wind direction is relatively stable all year round. At the same time, because the single-unit capacity of this type of wind power generation device is relatively small, it can be flexibly combined according to the qualitative characteristics of the installation location to form cluster power generation, which makes it easier to achieve economies of scale.

[0032] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A wind-concentrating wind power generation device, characterized in that: include: An external wind gathering device, wherein a mounting hole is provided on the external wind gathering device; A rotating device, comprising an outer ring and an inner ring capable of relatively rotating, wherein the outer ring is fixedly arranged in the mounting hole; The stator, a fixed ring is arranged on the outer ring, and the inner ring is rotatably arranged in the outer ring as a rotor; Blades, a plurality of blades are evenly fixed on the inner ring.

2. The wind-concentrating wind power generation device according to claim 1, characterized in that: The external wind gathering device is made of an unfolded wind gathering cloth, and the installation hole is opened at the center of the wind gathering cloth.

3. The wind-concentrating wind power generation device according to claim 2, characterized in that: It also includes a support rod, the external wind gathering device is arranged between two of the support rods, and the two side edges of the external wind gathering device are fixedly connected to the support rod on the same side through buckles.

4. The wind-concentrating wind power generation device according to claim 1, characterized in that: An inner wind gathering device is provided at the hole at the center of the inner ring, the inner wind gathering device is connected to the outer wind gathering device, and the inner wind gathering device is made of wind gathering cloth.

5. The wind-concentrating wind power generation device according to claim 2 or 4, characterized in that: The wind gathering cloth is made of lightweight material.

6. The wind-concentrating wind power generation device according to claim 4, characterized in that: A plurality of holes are provided at the connection position between the inner wind gathering device and the outer wind gathering device, and the blades are located in the holes.

7. The wind-concentrating wind power generation device according to claim 4, characterized in that: The outer diameter of the inner wind focusing device is smaller than the inner diameter of the inner ring. A plurality of integrally formed connecting strips are arranged on the outer edge of the inner wind focusing device. The ends of the connecting strips are fixedly connected to the outer wind focusing device. The blades are located in a hole formed between the inner wind focusing device and the outer wind focusing device.

8. The wind-concentrating wind power generation device according to claim 7, characterized in that: The length of the blade is smaller than the difference between the inner diameter of the inner ring and the outer diameter of the inner wind focusing device.

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