Wind gathering type wind power generation device

Abstract

The invention 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 arranged on the inner ring and the outer ring of the rotating device respectively, 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 relative to each other, wind power generation is realized, and the wind sweeping area is increased; and the power generation efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a wind-concentrating wind power generation device. Background Technology

[0002] Existing small wind turbines largely still use traditional structural forms. Small horizontal axis wind turbines have limited swept area, and the use of passive yaw systems increases the failure rate of the units. At the same time, purely mechanical passive yaw mechanisms also significantly reduce the power generation of small units. On the other hand, using active yaw mechanisms would greatly increase the overall cost of the units. Existing vertical axis wind turbines are difficult to scale up and mass-produce due to their complex unit structure. They also suffer from complex installation and high costs. At the same time, their overall unit cost remains high, resulting in low cost-effectiveness and making it difficult to form a competitive advantage.

[0003] The existing two types of small wind power generation devices have various wind collection methods. The wind collection method of small horizontal axis wind turbines is mostly to add a wind collection device in a small area around the wind turbine, which can follow the rotation of the wind turbine to catch the wind. The increase in the swept area is limited and the effect is not good. In addition, the blade structure of the wind turbine is of the traditional form, and most of the blade structure plays a supporting role and does not mainly participate in the work. Summary of the Invention

[0004] The purpose of this invention is to provide a wind-concentrating wind power generation device to solve the problems existing in the prior art, increase the swept area, and improve the power generation efficiency.

[0005] To achieve the above objectives, the present invention provides the following solution:

[0006] This invention provides a wind-concentrating wind power generation device, comprising:

[0007] An external air-concentrating device, wherein the external air-concentrating device is provided with mounting holes;

[0008] A rotary device includes an outer ring and an inner ring that can rotate relative to each other, wherein the outer ring is fixedly disposed in the mounting hole, and the rotary device may be a rotary bearing;

[0009] The generator stator has a fixed ring on the outer ring and an inner ring that is rotatably mounted inside the outer ring as a rotor. The inner ring serves as both the generator rotor and the fixed connection part for the blades.

[0010] The blades, a plurality of which are uniformly fixed in a ring, are disposed inside the inner ring. In this invention, the stator of the wind turbine is mounted on the outer ring of the rotating device, the inner ring serves as the generator rotor, and the blades are mounted on the inner ring. Therefore, the blades can generate lift under wind power, driving the inner ring to rotate relative to the outer ring, thereby causing the generator rotor and rotor to rotate relative to each other, thus achieving wind power generation.

[0011] Optionally, the external air-gathering device is made of unfolded air-gathering cloth, and the air-gathering cloth has the mounting holes.

[0012] Optionally, it also includes support rods, with the external air-gathering device disposed between the two support rods, and the two sides of the external air-gathering device being fixedly connected to the support rods on the same side by buckles.

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

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

[0015] Optionally, multiple holes are provided at the connection point between the internal air-gathering device and the external air-gathering device, and the blades are located within the coverage area of ​​the holes.

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

[0017] Optionally, the blade length is less than the difference between the inner diameter of the inner ring and the outer diameter of the cohesive air device.

[0018] The present invention achieves the following technical effects compared to the prior art:

[0019] This invention is based on a squirrel-cage induction generator. The stator of the generator is mounted on the outer ring of the slewing bearing, and the inner ring of the slewing bearing serves as the rotor of the generator, forming a large-size ring generator. By adjusting the aerodynamic shape of the blades and coordinating with a wind-gathering device, the rotor can receive wind in both forward and reverse directions and achieve rotation in the same direction, eliminating the need for a complex and easily damaged yaw mechanism, effectively reducing power generation costs, and increasing the swept area of ​​the wind turbine. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a front view of the wind-gathering wind power generation device of the present invention;

[0022] Figure 2 This is an isometric view of the wind-gathering wind power generation device of the present invention.

[0023] In the diagram: 1-Support rod, 2-External air-gathering device, 3-Outer ring, 4-Inner ring, 5-Internal air-gathering device, 6-Connecting strip. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The purpose of this invention is to provide a wind-concentrating wind power generation device to solve the problems existing in the prior art, increase the swept area, and improve the power generation efficiency.

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] refer to Figure 1 and Figure 2 As shown, this invention provides a wind-gathering wind power generation device, the structure of which includes an outer wind-gathering device 2 with a rectangular structure, and an installation hole on the outer wind-gathering device 2; a rotating device is provided in the installation hole, and in one specific embodiment, the rotating device is a slewing bearing, which includes an outer ring 3 and an inner ring 4 that can rotate relative to each other. The outer ring 3 is fixedly installed in the installation hole. The stator of the generator of this invention is also a ring structure and is fixedly installed in the outer ring 3. The inner ring 4 serves as the rotor of the generator, forming a ring generator; multiple blades are evenly arranged around the inner wall of the inner ring 4; by setting the stator of the wind turbine generator on the outer ring 3 of the rotating device, and the inner ring 4 serving as the rotor of the generator, and with the blades set on the inner ring 4, the blades can generate lift under wind power, driving the inner ring 4 to rotate relative to the outer ring 3, thereby causing the rotor and stator of the generator to rotate relative to each other, thus realizing wind power generation.

[0028] This invention, based on a squirrel-cage induction generator, mounts the generator stator on the outer ring 3 of a slewing bearing, and uses the inner ring 4 of the slewing bearing as the generator rotor, forming a large-size ring-type generator. Except for the stator, rotor, and blade structure, all other components are identical to existing generators and will not be described in detail. This is because, for the same power output, the generator's power P is directly proportional to the rotor diameter D and rotor length L, i.e., D²*L. This arrangement increases the relative speed between the rotor and stator, significantly reduces the longitudinal dimensions of the generator rotor and stator, and correspondingly reduces the generator's cost.

[0029] To achieve better wind concentrating effect, the external wind concentrating device 2 of this invention is made of unfolded wind-concentrating fabric, which is made of lightweight material. The external wind concentrating device 2 is located between two support rods 1, and its two sides are fixedly connected to the support rods 1 on the same side by buckles. An installation hole is provided at the connection between the external wind concentrating device 2 and the outer ring 3. Simultaneously, an internal wind concentrating device 5 made of the same material is also provided in the annular space formed by the inner ring. This device is connected to the external wind concentrating device 2. Regardless of the direction of the wind coming from either side, the wind concentrating device 5 and the external wind concentrating device 2 will concentrate the wind on their windward sides. The force causes a slight deformation along the wind direction, which makes the inner wind concentrator 5 and the outer wind concentrator 2 form a structure similar to a micro-curved surface. This changes the airflow angle within the range of the wind concentrator and concentrates the wind within the range of the wind concentrator to the blade position. Through the two parts of the outer wind concentrator 2 and the inner wind concentrator 5, the sweeping area of ​​the wind turbine is increased by about eleven times. Since air is a compressible fluid, this wind concentrating method increases the wind speed and air volume at the wind turbine. Without increasing the unit cost too much, the power generation of a single unit can be greatly increased.

[0030] In one embodiment, the outer edge of the inner air-converging device 5 is fixedly connected to the outer air-converging device 2, so that the size of the unfolded inner air-converging device 5 is smaller than the circle of rotation formed by the blade. Multiple holes are provided at the connection point between the inner air-converging device 5 and the outer air-converging device 2, and the blade is located within these holes, allowing the blade to operate normally without interference from the inner air-converging device 5. The arrangement of the inner air-converging device 5 is not specifically limited. In another embodiment, the outer diameter of the inner air-converging device 5 is smaller than the inner diameter of the inner ring 4. Multiple integrally formed connecting strips 6 are arranged around the outer edge of the inner air-converging device 5, and the ends of the connecting strips 6 are fixedly connected to the outer air-converging device 2. The blade is located at the hole between the inner air-converging device 5 and the outer air-converging device 2. The blade length is less than the difference between the inner diameter of the inner ring 4 and the outer diameter of the wind-cohesion device 5. The blade is selected from only about 20% of the length of the tip of a traditional blade and 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 stress on the blade more reasonable. By adjusting the aerodynamic shape of the wind turbine blades, the wind turbine can receive wind in both forward and reverse directions and achieve rotation in the same direction, eliminating the need for a complex and easily damaged yaw mechanism and effectively reducing the cost of power generation.

[0031] Because the wind turbine structure of this invention lacks a yaw mechanism, its installation location is relatively limited. It is more suitable for installation in locations with relatively stable wind directions, such as canyons, rivers, wind gaps, and fields. 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 to form a cluster power generation based on the qualitative characteristics of the installation location, making it easier to achieve economies of scale.

[0032] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A wind-concentrating wind power generation device, characterized in that, include: An external air-concentrating device, wherein the external air-concentrating device is provided with mounting holes; A rotary device includes an outer ring and an inner ring that can rotate relative to each other, wherein the outer ring is fixedly disposed in the mounting hole; The stator has a fixed ring disposed on the outer ring, and the inner ring is rotatably disposed within the outer ring as a rotor; The blades, and multiple blades are evenly fixed in a ring 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 unfolded wind-gathering cloth, and the mounting 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 support rods, and the external air-gathering device is located between the two support rods, with the two sides of the external air-gathering device being fixedly connected to the support rods on the same side by buckles.

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

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

6. The wind-concentrating wind power generation device according to claim 4, characterized in that, Multiple holes are provided at the connection point between the internal and external air-gathering devices, and the blades are located inside the holes.

7. The wind-concentrating wind power generation device according to claim 4, characterized in that, The outer diameter of the inner air-gathering device is smaller than the inner diameter of the inner ring. The outer side of the inner air-gathering device is provided with a plurality of integrally formed connecting strips. The ends of the connecting strips are fixedly connected to the outer air-gathering device. The blades are located in the hole formed between the inner air-gathering device and the outer air-gathering device.

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

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