Tower of wind turbine generator

Abstract

A tower of a wind turbine generator, comprising: a tower barrel (1) having one end connected to a base (2), wherein an access door (3) is provided on the tower barrel (1); an impeller (4) which is connected to the end of the tower barrel (1) distant from the base (2); and a balance assembly which is connected to the tower barrel (1). The balance assembly comprises a directional turning assembly and a stretching assembly; the directional turning assembly is connected to the outside of the tower barrel (1); when in use, the directional turning assembly rotates around the tower barrel (1) to adapt to different wind directions, and the stretching assembly is connected to the directional turning assembly; and when in use, the stretching assembly drives a counterweight block to move in a horizontal direction.

Description

A wind turbine tower Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to a wind turbine tower. Background Technology

[0002] A wind turbine is a device that converts wind energy into electrical energy. Wind energy is currently the most technologically mature and the most widely developed new renewable energy source in the field of clean energy. A wind turbine mainly consists of three parts: a rotor, a tower, and a base. The other power generation components are installed inside the rotor, tower, and base.

[0003] A search revealed Chinese Patent Publication No. CN219911032U, which discloses a wind power generation tower with good stability. The tower includes a base, a tower assembly movably mounted on the upper end of the base, a drive mechanism inside the base, and a counterweight mechanism on the upper end of the tower assembly. This invention has a simple structure and reasonable design. Through the counterweight mechanism, the center of gravity of the entire tower can be adjusted under different wind speeds, preventing the overall center of gravity from shifting towards the impeller at low wind speeds and shifting away from the impeller at high wind speeds due to impeller resistance. This increases the overall stability of the tower and extends its service life. Furthermore, the tower assembly increases the connection points between the tower body and the bottom mounting platform, and the stabilizing rod is inclined between the inner wall of the tower body and the bottom mounting platform, further balancing the tower's center of gravity and increasing its stability.

[0004] However, in the above technical solution, the stability of the tower is increased only by the rotation of the counterweight around the tower. But the counterweight has a certain area, and when the counterweight is on the top of the tower facing the wind, it will further increase the wind resistance of the tower and increase the load on the tower. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a wind turbine tower.

[0006] The technical solution of this utility model is as follows: A wind turbine tower includes a tower with a base connected to one end and an inlet / outlet on the tower; an impeller connected to the end of the tower away from the base; and a balancing assembly connected to the tower. The balancing assembly includes a steering assembly and an extension assembly. The steering assembly is connected to the outside of the tower. When in use, the steering assembly rotates around the tower to cope with different wind directions. The extension assembly is connected to the steering assembly. When in use, the extension assembly drives the counterweight to move in the horizontal direction.

[0007] Preferably, the steering assembly includes a support disc rotatably connected to the tower; a gear ring with the same center as the support disc and connected to the support disc; a first drive device with an output shaft connected to its output end and connected to a mounting plate, the support plate being connected to the tower; and a gear connected to the output shaft, the gear meshing with the gear ring for transmission.

[0008] Preferably, the extension assembly includes two support plates symmetrically arranged and connected to a support disc; a fixed seat connected to both ends of the support plates; threaded rods corresponding in number to the support plates, with both ends of the threaded rods rotatably connected to the fixed seat; a second drive device corresponding in number to the threaded rods, connected to the fixed seat in any direction, with the output end of the second drive device connected to one end of the threaded rod; and sliding seats threadedly connected to the reciprocating threaded rods, with a connecting plate connecting the sliding seats and a counterweight connected to the connecting plate.

[0009] Preferably, a protective cover is fitted on the outside of the second drive device, and the protective cover is connected to the fixed base.

[0010] Preferably, the tower has multiple evenly distributed ventilation holes, and a sealing frame is connected inside the ventilation holes.

[0011] Preferably, sound-absorbing cotton is connected to both sides of the sealing frame.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] In this invention, the steering assembly rotates around the central axis of the tower in use. Both the steering assembly and the impeller can be controlled to steer, achieving better performance. The extension assembly can move the counterweight in the horizontal direction in use, increasing the distance between the counterweight and the tower to obtain a greater torque and thus enhance its stability. Attached Figure Description

[0014] Figure 1 is a perspective view of this utility model;

[0015] Figure 2 is a cross-sectional view of Figure 1;

[0016] Figure 3 is an enlarged view of structure A in Figure 2;

[0017] Figure 4 is an enlarged view of the structure at point B in Figure 2;

[0018] Figure 5 is a schematic cross-sectional view of the gear ring.

[0019] Reference numerals: 1. Tower; 2. Base; 3. Inlet / Outlet; 4. Impeller; 5. Support plate; 6. Gear ring; 7. First drive unit; 8. Output shaft; 9. Mounting plate; 10. Gear; 11. Support plate; 12. Fixed seat; 13. Threaded rod; 14. Second drive unit; 15. Sliding seat; 16. Connecting plate; 17. Protective cover; 18. Ventilation hole; 19. Sealing frame; 20. Sound-absorbing cotton. Detailed Implementation Example

[0020] As shown in Figures 1-5, the wind turbine tower proposed in this utility model includes a tower 1, a base 2, an inlet / outlet 3, an impeller 4, and a balancing assembly. The bottom of the tower 1 is connected to the base 2, and the impeller 4 is connected to the top of the tower 1. A wind speed and direction sensor is connected to the top of the impeller 4. A notch is opened on the side wall of the sleeve 1, and the inlet / outlet 3 is connected to the notch by a hinge. The balancing assembly is connected to the outer side wall of the sleeve 1. The balancing assembly includes a steering assembly and an extension assembly. The steering assembly is connected to the outer side wall of the tower 1. In use, the steering assembly rotates around the central axis of the tower 1. Both the steering assembly and the impeller 4 can be controlled to steer for better performance. The extension assembly is connected to the steering assembly. In use, the extension assembly can drive the counterweight to move horizontally, increasing the distance between the counterweight and the tower 1 to obtain a larger torque and thus enhance its stability.

[0021] In an optional embodiment, the tower 1 has a plurality of evenly distributed ventilation holes 18, and a sealing frame 19 is connected inside the ventilation holes 18; the ventilation holes 18 can reduce the wind resistance on the surface of the tower 1 and enhance stability.

[0022] In an optional embodiment, sound-absorbing cotton 20 is attached to both sides of the sealing frame 19; the sound-absorbing cotton 20 absorbs the noise generated by the wind blowing through the ventilation hole 18. Example

[0023] As shown in Figures 2, 3, and 5, this utility model proposes a wind turbine tower. Compared to Embodiment 1, this embodiment describes the detailed structure of the steering assembly. The steering assembly includes a support plate 5, a gear ring 6, a first drive device 7, an output shaft 8, a mounting plate 9, a gear 10, and a support plate 11. The support plate 5 is rotatably connected to the outer wall of the tower 1 via bearings. The upper end face of the support plate 5 is used to connect the extension assembly, and the lower end face of the support plate 5 is used to connect the gear ring 6. The mounting plate 9 is connected to the outer wall of the tower 1, and the first drive device 7 is connected to the mounting plate 9. The first drive device 7 is an electric motor. The output end of the first drive device 7 is connected to the output shaft 8, and the gear 10 is connected to the output shaft 8. The gear 10 meshes with the gear ring 6 for transmission. Example

[0024] As shown in Figure 5, this utility model proposes a wind turbine tower. Compared with Embodiment 2, this embodiment describes the detailed structure of the extension assembly. The extension assembly includes a support plate 11, a fixed seat 12, a threaded rod 13, a second drive device 14, a sliding seat 15, and a connecting plate 16. Two symmetrically arranged support plates 11 are connected to the upper surface of the support plate 5. Both ends of the support plates 11 are connected to the fixed seat 12. Both ends of the threaded rod 13 are rotatably connected to the fixed seat 12 through bearings. Two second drive devices 14 are connected to either fixed seat 12. The second drive device 14 is selected from, but is not limited to, a servo motor. The second drive device 14 is connected to one end of the threaded rod 13. Two sliding seats 15 are threadedly connected to the threaded rod 13. The connecting plate 16 is connected to the upper surface of the sliding seat 15. The connecting plate 16 has a groove for accommodating the counterweight.

[0025] In an optional embodiment, a protective cover 17 is fitted on the outside of the second drive device 14, and the protective cover 17 is connected to the fixed base 12; the protective cover 17 prevents rainwater and debris from contacting the second drive device 14 and affecting its heat dissipation capacity.

[0026] In summary, when this utility model is used, wind speed and direction sensors for detecting direction and wind speed are installed on the impeller 4. Both sensors can send the detected signals to the control device. When the wind force is strong, the control device controls the operation of the first drive device 7 and the second drive device 14. After the first drive device 7 is started, its output shaft 8 drives the gear 10 to rotate. The gear 10 meshes with the gear ring 6 to drive the support disk 5 to rotate, so that the counterweight block and the impeller 4 are in the same direction. At the same time, the output ends of the two second drive devices 14 drive the two threaded rods 13 to rotate. The sliding seat 15 on the threaded rod 13 moves linearly along the central axis of the threaded rod 13. The connecting plate 16 and the counterweight block between the sliding seats 15 move away from the tower 1, so that the center of gravity of the tower 1 is kept balanced and its stability is enhanced. At the same time, the wind resistance can be further reduced through the ventilation holes 18 opened on the sleeve 1.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A wind turbine generator tower (1), characterized in that, include The tower (1) has a base (2) connected to one end, and an entrance (3) is opened on the tower (1). Impeller (4), which is connected to the end of the tower (1) away from the base (2); The balancing component is connected to the tower (1). The balancing component includes a steering component and an extension component. The steering component is connected to the outside of the tower (1). When the steering component is in use, it rotates around the tower (1) to cope with different wind directions. The extension component is connected to the steering component. When the extension component is in use, it drives the counterweight to move in the horizontal direction.

2. The wind turbine tower (1) according to claim 1, characterized in that, Steering components include Support plate (5), which is rotatably connected to tower (1); The gear ring (6) has the same center as the support plate (5) and is connected to the support plate (5); The first drive device (7) has an output shaft (8) connected to its output end. The first drive device (7) is connected to the mounting plate (9), and the support plate (11) is connected to the tower (1). Gear (10) is connected to output shaft (8) and gear (10) meshes with gear ring (6) for transmission.

3. The wind turbine tower (1) according to claim 2, characterized in that, The stretching components include There are two symmetrically arranged support plates (11), and the support plates (11) are connected to the support disk (5); A fixed base (12) is connected to both ends of a support plate (11); The number of threaded rods (13) corresponds to that of the support plate (11), and the two ends of the threaded rods (13) are rotatably connected to the fixed seat (12); The number of the second drive device (14) corresponds to the number of the threaded rod (13). The second drive device (14) is connected to the fixed seat (12) in any direction. The output end of the second drive device (14) is connected to one end of the threaded rod (13). The sliding seat (15) is threadedly connected to the reciprocating threaded rod (13), and a connecting plate (16) is connected between the sliding seats (15), with the counterweight connected to the connecting plate (16).

4. The wind turbine tower (1) according to claim 3, characterized in that, The second drive unit (14) is fitted with a protective cover (17) on its outer side, and the protective cover (17) is connected to the fixed base (12).

5. A wind turbine tower (1) according to claim 1, characterized in that, The tower (1) has multiple evenly distributed ventilation holes (18), and a sealing frame (19) is connected inside the ventilation holes (18).

6. A wind turbine tower (1) according to claim 5, characterized in that, Sound-absorbing cotton (20) is connected to both sides of the sealing frame (19).

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