Flexible vibration attenuation damping cable with single-layer network structure for wind driven generator

Abstract

The utility model discloses a wind driven generator single-layer network structure flexible vibration attenuation damping cable which comprises a plurality of supporting rods which are evenly arranged in the circumferential direction of a wind driven generator tower drum, the outer ends of the supporting rods are connected with a damper on a tower drum foundation through main cables, and the main cables are connected through auxiliary cables in the horizontal direction. Due to the multi-direction adaptability, the vibration control effect and stability of the device are improved, the device can adapt to different working conditions and environments, and safe operation of the wind driven generator is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of wind generator tower vibration reduction, in particular to a wind generator single-layer network structure flexible vibration reduction and damping cable. Background Art

[0002] With the growing global demand for renewable energy, the development of wind power generation technology is gaining increasing attention. However, wind turbines are often affected by factors such as changes in wind speed and direction during operation, which can lead to vibration and instability, affecting their power generation efficiency and lifespan. Therefore, research and improvement of vibration control devices for wind turbines has become a hot topic.

[0003] Currently, wind turbine vibration control devices primarily rely on two approaches: traditional rigid structure control and active control. Traditional methods rely primarily on rigid structures or simple vibration damping devices, such as damping springs and shock absorbers, to reduce vibration through structural changes or the use of vibration-absorbing materials. Active control, on the other hand, involves installing sensors to monitor wind turbine vibration and using a control unit to adjust vibration control devices, such as dampers or adjustment rods, in real time to suppress and control vibration. However, these vibration control devices still have several limitations. First, traditional rigid structure control methods struggle to adapt to varying operating conditions and vibration frequencies, limiting their effectiveness. Second, these methods often require large amounts of material and complex manufacturing processes, resulting in high costs. Furthermore, some active control devices can consume significant amounts of energy and require additional maintenance and overhaul, increasing maintenance costs and downtime. Therefore, current wind turbine vibration control devices still face limitations in terms of efficiency, cost, and reliability, and further technological breakthroughs and innovations are urgently needed to improve their performance and applicability. Utility Model Content

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a wind turbine single-layer network structure flexible vibration damping cable to solve the problems raised in the background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a single-layer network structure flexible vibration-damping damping cable of a wind turbine, including a plurality of support rods evenly arranged along the circumferential direction of the wind turbine tower, the outer ends of the support rods are connected to the damper on the tower base through the main cable, and the multiple main cables are connected in the horizontal direction through auxiliary cables.

[0006] Preferably, the top of the damper is hinged to the bottom of the main cable through a top plate, and the bottom of the damper is fixedly connected to the outer edge of the tower foundation through a bottom plate.

[0007] Preferably, the main rope is in a vertical state, and the auxiliary rope is in a horizontal state.

[0008] Preferably, the main cable and the auxiliary cable are connected perpendicularly to each other.

[0009] Preferably, the auxiliary rope is connected to the main rope in a winding manner.

[0010] Preferably, a plurality of auxiliary cables with equal spacing are distributed on the surface of the main cable from top to bottom.

[0011] Preferably, the plurality of support rods are evenly distributed in a circular array in the circumferential direction of the wind turbine tower.

[0012] Preferably, the plurality of support rods are in a horizontal state and located on the same horizontal plane.

[0013] Preferably, the number of the support rods is six, the number of main cables corresponding to the outer ends of the support rods is six, and the vertical projection of the tower base is a regular hexagon.

[0014] Beneficial effects of the utility model:

[0015] 1. The present invention can flexibly adapt to different vibration and stress conditions in multiple directions. Through the design of flexible cables, including horizontal support rods, vertical main cables and horizontal auxiliary cables, the device forms a network structure, allowing the flexible cables to move and deform freely in the horizontal and vertical directions. This design enables the device to effectively absorb and disperse vibration energy from all directions, whether it is from wind force or vibration generated by the operation of the wind turbine itself, it can be effectively controlled. The multi-directional adaptability not only improves the vibration control effect and stability of the device, but also enables it to adapt to different working conditions and environments, ensuring the safe operation of the wind turbine.

[0016] 2. The utility model combines the parallel setting of the damper and the flexible cable network, so that it can more effectively absorb and slow down the vibration energy generated by the wind turbine; the design of the flexible cable network can fully absorb the vibration energy in the horizontal and vertical directions, while the setting of the damper can further slow down the vibration by introducing damping force, thereby achieving vibration control and recovery; through this combined setting, the device can not only reduce the amplitude and frequency of the vibration, but also quickly restore to its original state, thereby ensuring the stable operation of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the vertical cross-sectional structure of a single-layer network structure flexible vibration damping cable for a wind turbine;

[0018] Figure 2 for Figure 1 A schematic top view of the structure in which the middle support rods are arranged in the circumferential direction of the wind turbine tower 1;

[0019] Figure 3 for Figure 1 A partial enlarged view of the middle damper part. DETAILED DESCRIPTION

[0020] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1: Figure 1-3 As shown, a single-layer network structure flexible vibration-damping cable for a wind turbine comprises a plurality of support rods 2 evenly arranged along the circumference of a wind turbine tower 1, wherein the outer ends of the support rods 2 are connected to the damper 5 on the tower foundation 8 via a main cable 3, and the plurality of main cables 3 are connected horizontally via auxiliary cables 4.

[0022] Preferably, the top of the damper 5 is hinged to the bottom of the main cable 3 through a top plate 6 , and the bottom of the damper 5 is fixedly connected to the outer edge of the tower foundation 8 through a bottom plate 7 .

[0023] Preferably, the main rope 3 is in a vertical state, and the auxiliary rope 4 is in a horizontal state.

[0024] Preferably, the main cable 3 and the auxiliary cable 4 are connected vertically to each other. This vertical connection method can make the force distribution more uniform and improve the vibration reduction effect.

[0025] Preferably, the auxiliary cable 4 is connected to the main cable 3 in a winding manner. During the actual installation process, when the auxiliary cable 4 is connected to the main cable 3, the auxiliary cable 4 can be first wrapped around the surface of one of the main cables 3 for one or several turns, and then wrapped around the surface of another main cable 3 for one or several turns, and so on, to complete the winding and connection process of all the main cables 3.

[0026] Preferably, multiple auxiliary cables 4 are distributed from top to bottom on the surface of the main cable 3 at equal intervals. This distribution forms a three-dimensional network structure from top to bottom, which can adapt to vibrations in multiple directions. Through its flexibility and elasticity, it absorbs and slows down vibration energy, thereby reducing the vibration amplitude of the wind turbine.

[0027] Preferably, the plurality of support poles 2 are evenly distributed in a circular array in the circumferential direction of the wind turbine tower 1 .

[0028] Preferably, the plurality of support rods 2 are in a horizontal state and located on the same horizontal plane.

[0029] Preferably, the number of the support rods 2 is six, the number of the main cables 3 corresponding to the outer ends of the support rods 2 is six, and the vertical projection of the tower foundation 8 is a regular hexagon.

[0030] The working principle of embodiment 1 is as follows:

[0031] When a wind turbine is subjected to external wind forces or other vibration sources, the vibrations are transmitted through the wind turbine tower 1 to the main cables 3 and auxiliary cables 4. These cables, acting as the primary vibration absorbers, effectively absorb and mitigate vibration energy through their flexibility and elasticity, thereby reducing the vibration amplitude of the wind turbine. The dampers, acting as auxiliary devices, further control vibrations. The network structure formed by the main cables 3 and auxiliary cables 4 allows for flexible horizontal and vertical movement and deformation, adapting to vibrations in multiple directions and improving the device's applicability and stability.

[0032] Example 2: A vibration reduction method for a wind turbine generator with a single-layer network structure and flexible vibration reduction and damping cables, comprising the following steps:

[0033] S1. When the wind turbine is affected by external wind or other vibration sources, the vibration will be transmitted to the main cable 3 and the auxiliary cable 4 through the wind turbine tower 1;

[0034] The network structure (i.e., a ring-shaped network structure) formed by connecting S2, the main cable 3, and the auxiliary cable 4 can flexibly move and deform in the horizontal and vertical directions, adapting to vibrations in multiple directions. Through its flexibility and elasticity, it absorbs and slows down vibration energy, thereby reducing the vibration amplitude of the wind turbine.

[0035] S3 and damper 5 serve as auxiliary devices to further control the vibration amplitude.

[0036] The above embodiments are merely preferred technical solutions of the present invention and should not be construed as limiting the present invention. The scope of protection of the present invention shall be the technical solutions set forth in the claims, including equivalent alternatives to the technical features of the technical solutions set forth in the claims. Equivalent alternatives and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A single-layer network structure flexible vibration damping cable for a wind turbine, characterized by: The invention comprises a plurality of support rods (2) uniformly arranged along the circumferential direction of a wind turbine tower (1), wherein the outer ends of the support rods (2) are connected to a damper (5) on a tower foundation (8) via a main cable (3), and the plurality of main cables (3) are connected in the horizontal direction via a secondary cable (4).

2. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 1, characterized in that: The top of the damper (5) is hinged to the bottom of the main cable (3) through a top plate (6), and the bottom of the damper (5) is fixedly connected to the outer edge of the tower foundation (8) through a bottom plate (7).

3. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 1, characterized in that: The main rope (3) is in a vertical state, and the auxiliary rope (4) is in a horizontal state.

4. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 1, characterized in that: The main cable (3) and the auxiliary cable (4) are connected to each other perpendicularly.

5. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 1, characterized in that: The auxiliary rope (4) is connected to the main rope (3) in a winding manner.

6. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 4, characterized in that: A plurality of auxiliary cables (4) with equal spacing are distributed on the surface of the main cable (3) from top to bottom.

7. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 1, characterized in that: The plurality of support rods (2) are evenly distributed in a circular array in the circumferential direction of the wind turbine tower (1).

8. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 7, characterized in that: The plurality of support rods (2) are in a horizontal state and are located on the same horizontal plane.

9. The single-layer network structure flexible vibration damping cable of a wind turbine according to claim 8, characterized in that: The number of the support rods (2) is six, the number of the main cables (3) corresponding to the outer ends of the support rods (2) is six, and the vertical projection of the tower base (8) is a regular hexagon.

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