Wind driven generator with automatic wind power guiding mechanism

Abstract

The invention belongs to the technical field of wind driven generators, and particularly relates to a wind driven generator with an automatic wind power guiding mechanism. A wind driven generator with an automatic wind power guide mechanism comprises a generator tower, a stator base, a power generation mechanism, guide blades and a guide blade shaft, the stator base is rotatably mounted at the upper end of the generator tower, the stator base is hollow, the power generation mechanism is mounted in the stator base, and the guide blades are mounted on the stator base. One side of the stator base is rotatably provided with fan blades, the opposite side of the stator base is provided with the guide blade shaft, the guide blade shaft is horizontally distributed, and the guide fan blades are fixed on the guide blade shaft. According to the wind driven generator, the utilization efficiency of wind power resources is improved, and the economic benefits and the social benefits of the wind driven generator are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbines, and in particular relates to a wind turbine with an automatic wind steering mechanism. Background Art

[0002] With the acceleration of the global industrialization process, the consumption rate of traditional fossil energy such as coal, oil and natural gas has risen sharply, and their reserves are decreasing. At the same time, the large-scale use of traditional energy has caused environmental problems, endangering human health and ecological balance. Countries around the world have focused on the development and utilization of renewable energy. Among them, wind power generation, as a clean and sustainable way of obtaining energy, 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. Changes in wind direction will cause the angle between the wind rotor and the wind direction to change. If the wind direction is parallel to the plane of the wind rotor, the blades can hardly capture wind energy, and the power generation efficiency is close to zero. In the prior art, in order to solve the adverse effects of wind direction on the power generation efficiency of wind turbines, it is a conventional technical means to install a yaw system on the wind turbine. The yaw system senses the change in wind direction through sensors, and then drives the nacelle to rotate so that the plane of the wind rotor remains perpendicular to the wind direction. However, if the yaw system fails, or does not respond in time in an environment where the wind direction changes frequently, the wind rotor will deviate from the optimal wind direction angle, resulting in a decrease in the wind energy utilization coefficient and a decrease in power generation efficiency. In addition, the yaw system also has problems such as high maintenance costs and difficult maintenance, which undoubtedly increases the factory cost of wind turbines. Summary of the invention

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

[0005] To achieve the above object, a wind turbine with an automatic wind guiding mechanism comprises a generator tower, a stator base, a power generation mechanism, a guide blade and a guide blade shaft, wherein the stator base is rotatably mounted on the upper end of the generator tower, the interior of the stator base is hollow, the power generation mechanism is mounted in the stator base, a fan blade is rotatably mounted on one side of the stator base, and the guide blade shaft is arranged on the opposite side, the guide blade shaft is horizontally distributed, and the guide fan blade is fixed on the guide blade shaft; when the fan blade rotates, the power generation mechanism generates current to generate electricity;

[0006] Among them, the height of the generator tower is 12 to 15 meters;

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

[0008] The length of the fan blade is 3.2m.

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

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

[0011] Furthermore, the limiting member is a base limiting block, the base limiting block is arranged at the bottom of the stator base, and the upper end of the generator tower is provided with a tower limiting block.

[0012] Furthermore, a ground support structure is provided at the bottom of the generator tower.

[0013] Furthermore, a plurality of anti-breaking cables are provided along the circumference of the generator tower, one end of the anti-breaking cable is fixedly connected to the generator tower, and the other end of the anti-breaking cable is fixedly connected to the ground support structure.

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

[0015] Furthermore, four anti-breaking cables are provided.

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

[0017] The beneficial effects of the present invention are as follows: the wind turbine (3-5kw / h) of the present invention is compact and simple in structure, and can be applied to special power generation scenarios such as narrow rural ground and residential roofs, thereby increasing the penetration rate of clean energy in rural areas and lowering the threshold for application scenarios of wind turbines. In addition, the wind turbine of the present invention improves the utilization efficiency of wind resources, greatly improving the existing wind turbines that stop generating electricity nearly 50% of the time in a year due to insufficient wind force to drive the power generation blades to rotate due to changes in wind direction. In addition to meeting the needs of farmers for their own use, the excess electricity can be sold to the grid, which reduces the production and living costs of farmers to a certain extent, and significantly improves the economic and social benefits of wind turbines. Moreover, the wind turbines are installed in special power generation scenarios such as narrow rural ground and residential roofs, which significantly reduces the difficulty of maintaining the wind turbines, and the structural strength and rigidity of the wind turbines themselves also basically solve the maintenance problem. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 2 yes Figure 1 The right side schematic diagram shown;

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

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

[0022] In the figure: 1. ground support structure of generator pillar; 2. generator tower; 3. stator base shaft; 4. tower limit block; 5. stator base; 6. guide fan blade; 7. guide fan blade shaft; 8. electromagnetic brake; 9. rotor; 10. stator; 11. rotor shaft; 12. fan blade; 13. fan blade shaft; 14. base limit block; 15. bearing; 16. anti-break cable. Specific implementation plan

[0023] The following part further describes the present invention in conjunction with the accompanying drawings and specific implementation methods, but does not limit the scope of protection thereof.

[0024] like Figure 1-4The present invention provides a wind turbine with an automatic wind guiding mechanism, comprising a generator tower 2, a stator base 5, a power generation mechanism and a guiding mechanism. The stator base 5 is rotatably mounted on the upper end of the generator tower 2. The interior of the stator base 5 is hollow. The power generation mechanism is installed in the stator base 5. A fan blade 12 is rotatably mounted on one side of the stator base 5. When the fan blade 12 rotates, the power generation mechanism generates current to generate electricity. A guiding mechanism is provided on the opposite side of the stator base 5. Under the action of wind force, the guiding 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 whole 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 by a flange, and the column structure composed of the first column and the second column can facilitate the transportation and installation of the generator tower 2. In order 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 the present invention belongs to the prior art, and its structure and fixing principle are not limited here. Optimally, the height of the generator tower 2 is 12-15m.

[0026] As an embodiment of the present invention, in order to improve the anti-bending performance of the generator tower 2, a plurality of anti-breaking cables 16 are provided along the circumference of the generator tower 2, one end of the anti-breaking cable 16 is fixedly connected to the generator tower 2, and the other end is fixedly connected to the ground support structure 1. Optimally, four anti-breaking cables 16 are provided and evenly spaced along the circumference of the generator tower 2, and the angle between the anti-breaking cable 16 and the central axis of the generator tower 2 is less than 30°, so that a stable triangular structure is formed between the generator tower base, the ground support structure 1 and the anti-breaking cable 16, thereby achieving the purpose of 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, and the support rods are angle steels. 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-break 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 45°.

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

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

[0030] In the present invention, the guide mechanism includes a guide blade 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 blade 6 is fixed on the guide blade shaft 7 .

[0031] As an embodiment of the present invention, the installation direction of the guide blade 6 is perpendicular to the axial direction of the guide blade shaft 7. In order to increase the contact area between the guide blade 6 and the wind, the guide blade 6 is rectangular, and the right-angled side close to the stator base 5 is arc-shaped to achieve the purpose of reducing wind resistance. Optimally, the guide blade 6 is 1.5 meters long and 1 meter high.

[0032] When the wind force is not enough to drive the blades 12 to rotate, but is sufficient to drive the guide blades 12 to rotate, the steering wind force will be directed to the guide blades 12, driving the guide blades 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 surface of the guide blade 12 rotates to be parallel to the wind direction, and the surface of the blade 12 rotates to face the wind, the guide blade shaft 13 stops rotating, and the blade 12 continues to rotate to generate electricity. This cycle repeats, and the blades 12 and the guide blades 12 cooperate with each other, so that the power generation blades 12 of the wind turbine of the present invention automatically keep tracking and aligning with the wind direction, realize the maximum utilization of wind resources, and can automatically generate electricity in any wind direction throughout the year, thereby improving the power generation efficiency.

[0033] In the present 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 in the stator base 5, and 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, the electromagnetic brake 8 and the inner wall of the stator base 5 in sequence and is rotatably connected. The other end of the rotor shaft 11 is provided with a fan blade shaft 13, and 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 the present invention, the magnetic power generation mechanism composed of the stator 10, the rotor 9, the rotor shaft 11 and the electromagnetic brake 8 belongs to the prior art, and the present invention does not repeat the connection mode and the power generation principle between the stator 10, the rotor 9, the rotor shaft 11 and the electromagnetic brake 8. As an embodiment of the present invention, the axis of the rotor shaft 11 is coaxially arranged with the axis of the guide blade shaft 7. Optimally, the fan blade 12 is provided with 3 pieces, the length of the 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 fan blades 12 rotate, the rotor shaft 11 is driven to rotate to cut the magnetic field to generate electricity, and the power generation mechanism is connected to the wires to complete the power transmission. The power generation mechanism of the present invention has a simple structure and high power generation efficiency, and is directly integrated in the stator base 5, so as to fully utilize the installation space and further reduce the volume of the wind turbine.

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

[0037] As an embodiment of the present invention, the limiting member is a base limiting block 14, and the base limiting block 14 is arranged 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. 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, and under the limiting action of the base limiting block 14 and the tower limiting block 4, the stator base 5 is prevented from excessively deflecting under the action of wind force, thereby reducing the efficiency of wind force utilization. Optimally, the base limiting block 14 and the tower limiting block 4 are located on the same horizontal plane to achieve a 180° rotation of the stator base 5.

[0038] The wind turbine (3-5kw / h) of the present invention has a compact size and simple structure. It can be applied to special power generation scenarios such as narrow rural ground and residential roofs, which improves the penetration rate of clean energy in rural areas and lowers the threshold of application scenarios of wind turbines. In addition, the wind turbine of the present invention improves the utilization efficiency of wind resources, greatly improves the existing wind turbines that stop generating electricity nearly 50% of the time in a year due to insufficient wind force to drive the power generation blades 12 to rotate due to changes in wind direction. In addition to meeting the farmers' own use, the excess electricity can be connected to the grid and sold, which reduces the farmers' production and living costs to a certain extent, and the economic and social benefits of wind turbines are significantly improved. Moreover, the wind turbine is installed in special power generation scenarios such as narrow rural ground and residential roofs, which significantly reduces the difficulty of repairing the wind turbine, and the structural strength and rigidity of the wind turbine itself basically solve the problem of maintenance.

[0039] In the absence of conflict, the above embodiments and features in the embodiments may 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind turbine with an automatic wind steering mechanism, characterized in that: The invention comprises a generator tower (2), a stator base (5), a power generation mechanism, a guide blade (6) and a guide blade shaft (7); the stator base (5) is rotatably mounted on the upper end of the generator tower (2); the interior of the stator base (5) is hollow; the power generation mechanism is mounted in the stator base (5); a fan blade (12) is rotatably mounted on one side of the stator base (5); the guide blade shaft (7) is arranged on the opposite side; the guide blade shaft (7) is horizontally distributed; the guide fan blade (6) is fixed on the guide blade shaft (7); when the fan blade (12) rotates, the power generation mechanism generates current to generate electricity; The height of the generator tower (2) is 12 to 15 meters; The guide blade (6) is 1.5 m long and 1 m high; The length of the fan blade (12) is 3.2 m.

2. A wind turbine generator with an automatic wind steering mechanism according to claim 1, characterized in that: The power generation mechanism comprises 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), the electromagnetic brake (8) and the inner wall of the stator base (5) in sequence and is rotatably connected; 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 and distributed along the circumference of the fan blade shaft (13) and are fixedly connected to the fan blade shaft (13).

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

4. A wind turbine generator with an automatic wind steering mechanism according to claim 4, characterized in that: The limiting member is a base limiting block (14), the base limiting block (14) is arranged 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).

5. A wind turbine with an automatic wind steering mechanism according to claim 1, characterized in that: A ground support structure (1) is provided at the bottom of the generator tower (2).

6. A wind turbine generator with an automatic wind steering mechanism according to claim 5, characterized in that: A plurality of anti-breaking cables (16) are arranged along the circumference of the generator tower (2), one end of the anti-breaking cable (16) is fixedly connected to the generator tower (2), and the other end is fixedly connected to the ground support structure (1).

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

8. A wind turbine generator with an automatic wind steering mechanism according to claim 1, characterized in that: The anti-breakage cables (16) are provided with four.

9. A wind turbine generator with an automatic wind steering mechanism according to claim 1, characterized in that: A stator base shaft (3) is provided at the bottom of the stator base (5), and an axial hole matched with the stator base shaft (3) is provided at the upper end of the generator tower (2). The stator base shaft (3) is coaxially installed in the axial hole and is rotatably connected to the axial hole via a bearing (15).

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