A wind turbine with a wind force automatic guiding mechanism

Abstract

The application belongs to the technical field of wind driven generators, and particularly relates to a wind driven generator with a wind power automatic guiding mechanism. The wind driven generator with the wind power automatic guiding mechanism comprises a generator tower, a stator base, a generator mechanism, guiding blades and guiding blade shafts. The stator base is rotatably installed at the upper end of the generator tower. The stator base is internally hollow. The generator mechanism is installed in the stator base. A wind blade is rotatably installed on one side of the stator base. The guiding blade shafts are arranged on the opposite side of the stator base. The guiding wind blades are fixed on the guiding blade shafts. The wind driven generator improves the utilization efficiency of wind power resources, and the economic and social benefits of the wind driven generator are significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of wind turbine technology, and specifically relates to a wind turbine with an automatic wind guidance mechanism. Background Technology

[0002] With the acceleration of global industrialization, the consumption rate of traditional fossil fuels such as coal, oil, and natural gas has increased dramatically, and their reserves are dwindling. At the same time, the large-scale use of traditional energy sources has caused environmental problems, jeopardizing human health and ecological balance. Countries around the world are focusing their attention on the development and utilization of renewable energy, among which wind power, as a clean and sustainable energy source, has received widespread attention and in-depth research, and its position in the global energy structure is becoming increasingly important.

[0003] Wind direction is crucial to the power generation efficiency of wind turbines, as changes in wind direction alter the angle between the rotor and the wind. If the wind direction is parallel to the rotor plane, the blades can barely capture wind energy, resulting in near-zero power generation efficiency. In current technology, installing a yaw system on the wind turbine is a common solution to mitigate the adverse effects of wind direction on power generation efficiency. This system uses sensors to detect changes in wind direction and then drives the nacelle to rotate, keeping the rotor plane perpendicular to the wind direction. However, if the yaw system malfunctions or fails to respond promptly in environments with frequently changing wind directions, the rotor will deviate from the optimal wind direction angle, leading to a decrease in the wind energy utilization coefficient and reduced power generation efficiency. Furthermore, yaw systems suffer from high maintenance costs and difficulties, undoubtedly increasing the factory cost of the wind turbine. Summary of the Invention

[0004] The present invention aims to overcome the defects and shortcomings of the existing wind turbine technology and proposes a special mechanism that can automatically track the wind direction, so that the wind turbine blades can automatically keep aligned with the wind direction and generate electricity in any wind direction throughout the year.

[0005] To achieve the above objectives, a wind turbine generator with an automatic wind-guided mechanism includes a generator tower, a stator base, a power generation mechanism, guide vanes, and guide blade shafts. The stator base is rotatably mounted on the upper end of the generator tower and is hollow inside. The power generation mechanism is installed inside the stator base. A vane is rotatably mounted on one side of the stator base, and the guide blade shaft is located on the opposite side. The guide blade shafts are horizontally distributed, and the guide vanes are fixed on the guide blade shafts. When the vane rotates, the power generation mechanism generates current to produce electricity.

[0006] The height of the generator tower is 12-15 m;

[0007] The guide vane is 1.5 m long and 1 m high;

[0008] The blade is 3.2 m long.

[0009] Furthermore, the power generation mechanism includes a rotor shaft, a stator, a rotor, and an electromagnetic brake. The stator and rotor are coaxially arranged within the stator base, and the electromagnetic brake is coaxially arranged on one side of the stator. One end of the rotor shaft passes sequentially through the side wall of the stator base, the rotor, and the electromagnetic brake, and is rotatably connected to the inner wall of the stator base. The other end of the rotor shaft is provided with a fan blade shaft, and multiple fan blades are evenly spaced along the circumference of the fan blade shaft and are fixedly connected to the fan blade shaft.

[0010] Furthermore, the stator base is provided with a limiting member, which is used to limit the rotation angle of the stator base.

[0011] Furthermore, the limiting component is a base limiting block, which is disposed at the bottom of the stator base, and a tower limiting block is provided at the upper end of the generator tower.

[0012] Furthermore, the generator tower is provided with a ground support structure at its base.

[0013] Furthermore, multiple anti-breakage cables are provided along the circumference of the generator tower. One end of each anti-breakage cable is fixedly connected to the generator tower, and the other end is fixedly connected to the ground support structure.

[0014] Furthermore, the angle between the anti-breakage cable and the central axis of the generator tower is less than 30°.

[0015] Furthermore, the anti-breakage cable has four strands.

[0016] Furthermore, the bottom of the stator base is provided with a stator base shaft, and the upper end of the generator tower is provided with a shaft hole adapted to the stator base shaft. The stator base shaft is coaxially installed in the shaft hole and is rotatably connected to the shaft hole through a bearing.

[0017] The beneficial effects of this invention are as follows: The wind turbine generator (3-5 kW / h) of this invention is compact in size and simple in structure, making it suitable for special power generation scenarios such as limited land in rural areas and residential rooftops. This increases the penetration rate of clean energy in rural areas and lowers the application threshold for wind turbine generators. Furthermore, the wind turbine generator of this invention improves the utilization efficiency of wind resources, significantly reducing the problem of existing wind turbines stopping power generation due to insufficient wind speed to rotate the turbine blades for nearly 50% of the year caused by wind direction changes. In addition to meeting the farmers' own needs, the surplus electricity can be sold to the grid, alleviating farmers' production and living costs to a certain extent. The economic and social benefits of the wind turbine generator are significantly improved. Moreover, the installation of the wind turbine generator in special power generation scenarios such as limited land in rural areas and residential rooftops significantly reduces the difficulty of maintenance, and the structural strength and rigidity of the wind turbine generator itself essentially solve the maintenance problem. Attached Figure Description

[0018] Figure 1 is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a right-view schematic diagram as shown in Figure 1;

[0020] Figure 3 This is a partial view of the generator tower from direction A;

[0021] Figure 4 This is a partial view of the stator base along direction A.

[0022] In the diagram: 1. Generator support structure; 2. Generator tower; 3. Stator base shaft; 4. Tower limiting block; 5. Stator base; 6. Guide fan blade; 7. Guide blade shaft; 8. Electromagnetic brake; 9. Rotor; 10. Stator; 11. Rotor shaft; 12. Fan blade; 13. Fan blade shaft; 14. Base limiting block; 15. Bearing; 16. Anti-breakage cable. Detailed Implementation Plan

[0023] The following section describes the invention further with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of protection of the invention.

[0024] like Figure 1-4 This invention provides a wind turbine generator with an automatic wind-driven guidance mechanism, comprising a generator tower 2, a stator base 5, a power generation mechanism, and a guidance mechanism. The stator base 5 is rotatably mounted on the upper end of the generator tower 2. The stator base 5 is hollow inside. The power generation mechanism is installed inside the stator base 5. A wind blade 12 is rotatably mounted on one side of the stator base 5. When the wind blade 12 rotates, the power generation mechanism generates current to produce electricity. A guidance mechanism is provided on the opposite side of the stator base 5. Under the action of wind force, the guidance mechanism drives the stator base 5 to rotate around the axial direction of the generator tower 2.

[0025] As an embodiment of the present invention, the generator tower 2 can be a single column structure or a column structure composed of a first column and a second column. The first column and the second column are connected and fixed together by a flange. The column structure composed of the first column and the second column facilitates the handling and installation of the generator tower 2. To achieve the fixation of the generator tower 2, a ground support structure 1 is provided at the bottom of the generator tower 2. The ground support structure 1 in this invention is prior art, and its structure and fixing principle are not limited here. Preferably, the height of the generator tower 2 is 12-15 m.

[0026] In one embodiment of the present invention, to improve the bending resistance of the generator tower 2, multiple anti-breakage cables 16 are provided along the circumference of the generator tower 2. One end of each anti-breakage cable 16 is fixedly connected to the generator tower 2, and the other end is fixedly connected to the ground support structure 1. Preferably, four anti-breakage cables 16 are provided, evenly spaced along the circumference of the generator tower 2, and the angle between the anti-breakage cables 16 and the central axis of the generator tower 2 is less than 30°, so that the generator tower base, the ground support structure 1, and the anti-breakage cables 16 form a stable triangular structure, thereby improving the stability of the generator tower 2.

[0027] As an embodiment of the present invention, in order to improve the rigidity of the generator tower 2, at least four support rods are evenly spaced along the circumference of the lower part of the generator tower 2. The support rods are angle steel, one end of the support rod is connected and fixed to the generator tower 2, and the other end extends to the installation position of the anti-breakage cable 16 and is connected and fixed to the ground support structure 1. Optimally, the angle between the support rod and the axis of the generator tower 2 is 45º.

[0028] In this invention, the stator base 5 is provided with a stator base shaft 3 at its bottom, and the upper end of the generator tower 2 is provided with a shaft hole that is adapted to the stator base shaft 3. The stator base shaft 3 is coaxially installed in the shaft hole and is rotatably connected to the shaft hole through a bearing 15.

[0029] The present invention has the advantages of simple structure, low implementation cost and convenient operation through the rotational connection between the rotating shaft and the bearing 15.

[0030] In this invention, the guiding mechanism includes a guide vane 6 and a guide blade shaft 7. The guide blade shaft 7 is horizontally arranged, and its end is fixedly connected to the stator base 5. The guide vane 6 is fixed on the guide blade shaft 7.

[0031] In one embodiment of the present invention, the guide vane 6 is installed perpendicular to the axial direction of the guide blade shaft 7. To increase the contact area between the guide vane 6 and the wind, the guide vane 6 has a rectangular structure, and the right-angled side near the stator base 5 is rounded to reduce wind resistance. Ideally, the guide vane 6 is 1.5 meters long and 1 meter high.

[0032] When the wind force is insufficient to rotate the wind turbine blade 12, but sufficient to rotate the guide vane 12, the wind force will be directed towards the guide vane 12, causing the guide vane 12 to drive the guide blade shaft 13 and the stator base 5 to rotate around the central axis of the top hole of the generator tower 2. When the guide vane 12 rotates to be parallel to the wind direction and the wind turbine blade 12 rotates to the windward position, the guide vane shaft 13 stops rotating, and the wind turbine blade 12 continues to rotate to generate electricity. This cycle repeats, with the wind turbine blade 12 and the guide vane 12 cooperating with each other, so that the generating wind turbine blade 12 of the wind turbine of the present invention automatically keeps tracking and aligning with the wind direction, realizing the maximum utilization of wind resources, and automatically generating electricity in any wind direction throughout the year, thus improving power generation efficiency.

[0033] In this invention, the power generation mechanism includes a rotor shaft 11, a stator 10, a rotor 9, and an electromagnetic brake 8. The stator 10 and the rotor 9 are coaxially arranged within the stator base 5. The electromagnetic brake 8 is coaxially arranged on one side of the stator 10. One end of the rotor shaft 11 passes sequentially through the side wall of the stator base 5, the rotor 9, and the electromagnetic brake 8, and is rotatably connected to the inner wall of the stator base 5. The other end of the rotor shaft 11 is provided with a fan blade shaft 13. A plurality of fan blades 12 are evenly spaced along the circumference of the fan blade shaft 13 and are fixedly connected to the fan blade shaft 13.

[0034] In this invention, the magnetic power generation mechanism composed of stator 10, rotor 9, rotor shaft 11, and electromagnetic brake 8 is prior art. The connection method and power generation principle between stator 10, rotor 9, rotor shaft 11, and electromagnetic brake 8 will not be elaborated further. As an embodiment of this invention, the axis of rotor shaft 11 is coaxial with the axis of guide vane shaft 7. Preferably, the fan blade 12 has three blades, the length of fan blade 12 is 3.2 meters, and the distance from the center line of the fan blade to the center axis of the tower is 1.75 meters to 2.75 meters.

[0035] When the blade 12 rotates, it drives the rotor shaft 11 to rotate, cutting the magnetic field to generate electricity. The power generation mechanism is connected to an external wire to complete the power transmission. The power generation mechanism of this invention has a simple structure, high power generation efficiency, and is directly integrated into the stator base 5, making full use of the installation space and further reducing the size of the wind turbine.

[0036] As an embodiment of the present invention, the stator base 5 is provided with a limiting member, which is used to limit the rotation angle of the stator base 5.

[0037] In one embodiment of the present invention, the limiting member is a base limiting block 14, which is disposed at the bottom of the stator base 5, and a tower limiting block 4 is disposed at the upper end of the generator tower 2. When the stator base 5 rotates until the base limiting block 14 moves to abut against the tower limiting block 4, the stator base 5 stops rotating. Under the limiting action of the base limiting block 14 and the tower limiting block 4, the stator base 5 is prevented from deflecting excessively under the action of wind force, thus reducing the efficiency of wind power utilization. Ideally, the base limiting block 14 and the tower limiting block 4 are located on the same horizontal plane to achieve rotation of the stator base 5 in a 180° direction.

[0038] The wind turbine generator of this invention (3-5 kW / h) is compact and simple in structure, making it suitable for special power generation scenarios such as limited land in rural areas and residential rooftops. This increases the penetration rate of clean energy in rural areas and lowers the application threshold for wind turbine generators. Furthermore, the wind turbine generator of this invention improves the utilization efficiency of wind resources, significantly reducing the problem of existing wind turbines stopping power generation due to insufficient wind to rotate the turbine blades 12 for nearly 50% of the year caused by wind direction changes. In addition to meeting the farmers' own needs, the surplus electricity can be sold to the grid, alleviating farmers' production and living costs to a certain extent. The economic and social benefits of the wind turbine generator are significantly improved. Moreover, the installation of the wind turbine generator in special power generation scenarios such as limited land in rural areas and residential rooftops significantly reduces the difficulty of maintenance, and the structural strength and rigidity of the wind turbine generator itself essentially solves the maintenance problem.

[0039] Where there is no conflict, the above embodiments and features described herein can be combined with each other.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A wind turbine generator with an automatic wind-guided mechanism, characterized in that, The generator includes a generator tower (2), a stator base (5), a power generation mechanism, a guide vane (6), and a guide vane shaft (7). The stator base (5) is rotatably mounted on the upper end of the generator tower (2). The stator base (5) is hollow inside. The power generation mechanism is installed inside the stator base (5). A fan blade (12) is rotatably mounted on one side of the stator base (5), and the guide vane shaft (7) is provided on the opposite side. The guide vane shaft (7) is horizontally distributed, and the guide vane (6) is fixed on the guide vane shaft (7). When the fan blade (12) rotates, the power generation mechanism generates current to generate electricity. The generator tower (2) is 12-15 m high, and the guide vane (6) is 1.5 m long and 1 m high. The blade (12) is 3.2 m long; Specifically, the power generation mechanism includes a rotor shaft (11), a stator (10), a rotor (9), and an electromagnetic brake (8). The stator (10) and the rotor (9) are coaxially arranged in the stator base (5). The electromagnetic brake (8) is coaxially arranged on one side of the stator (10). One end of the rotor shaft (11) passes through the side wall of the stator base (5), the rotor (9), and the electromagnetic brake (8) in sequence and is rotatably connected to the inner wall of the stator base (5). The other end of the rotor shaft (11) is provided with a fan blade shaft (13). Multiple fan blades (12) are evenly spaced along the circumference of the fan blade shaft (13) and are fixedly connected to the fan blade shaft (13). The stator base (5) has a stator base shaft (3) at its bottom. The upper end of the generator tower (2) has a shaft hole that is compatible with the stator base shaft (3). The stator base shaft (3) is coaxially installed in the shaft hole and is rotatably connected to the shaft hole through a bearing (15).

2. A wind turbine generator with an automatic wind guidance mechanism according to claim 1, characterized in that, The stator base (5) is provided with a limiting member, which is used to limit the rotation angle of the stator base (5).

3. A wind turbine generator with an automatic wind guidance mechanism according to claim 2, characterized in that, The limiting component is a base limiting block (14), which is located at the bottom of the stator base (5), and the upper end of the generator tower (2) is provided with a tower limiting block (4).

4. A wind turbine generator with an automatic wind guidance mechanism according to claim 1, characterized in that, The generator tower (2) is provided with a ground support structure (1) at its bottom.

5. A wind turbine generator with an automatic wind guidance mechanism according to claim 4, characterized in that, Multiple anti-breakage cables (16) are provided along the circumference of the generator tower (2). One end of the anti-breakage cable (16) is fixedly connected to the generator tower (2), and the other end is fixedly connected to the ground support structure (1).

6. A wind turbine generator with an automatic wind guidance mechanism according to claim 5, characterized in that, The angle between the anti-breakage cable (16) and the central axis of the generator tower (2) is less than 30°.

7. A wind turbine generator with an automatic wind guidance mechanism according to claim 6, characterized in that, The anti-breakage cable (16) has four strands.

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