Tower drum damper
By employing a dual-mass structure and flexible connection in the tower damper, combined with arc and linear guide rail design, and utilizing electromagnetic action and rolling connection, the problem of poor vibration reduction effect of existing tower dampers is solved, achieving better vibration suppression and frequency modulation effects, and reducing space requirements.
Patent Information
- Application Number
- CN202610362175.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-24
- Publication Date
- 2026-05-05
AI Technical Summary
Existing tower dampers have simple structures and poor vibration reduction effects, making it difficult to effectively prevent towers from resonating and suffering fatigue damage under strong winds or typhoons.
The structure includes two guide rails and two mass bodies. The two mass bodies are connected by a flexible connector, allowing them to move on the guide rails. By combining curved and linear guide rails, the mass ratio is adjusted, and electromagnetic action and rolling connection are used to improve energy dissipation.
It achieves better vibration suppression and frequency modulation capabilities, reduces space requirements, improves the tower's vibration resistance, and avoids the virtual mass discount of flywheel frequency modulation.
Smart Images
Figure CN121977041A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of damper technology, specifically a tower damper. Background Technology
[0002] Wind power generation refers to the conversion of wind kinetic energy into mechanical kinetic energy, and then into electrical kinetic energy. It involves a wind turbine rotating under the influence of wind, converting the kinetic energy of the wind into the mechanical energy of the turbine shaft, and a generator rotating under the drive of the turbine shaft to generate electricity. It is an important form of wind energy utilization.
[0003] Tower dampers are the "stabilizing force" of wind turbine generators. Their core function is to prevent the tower from resonating, fatigued, or even collapsing under strong winds (especially typhoons) or operating loads by consuming vibration energy. When the tower sways in one direction, the mass block or fluid inside the damper moves in the opposite direction, generating a counterforce that pulls the tower in a "tug-of-war" manner.
[0004] Tower dampers in related technologies generally consist of a mass block. When the tower sways, the mass block swings to suppress vibration. However, due to its relatively simple structure, the vibration reduction effect is poor.
[0005] In view of this, there is an urgent need for a tower damper. Summary of the Invention
[0006] To address the problems existing in the prior art, the present invention solves this problem using the following technical structure.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A tower damper includes: a connector, two guide rails and two mass bodies, wherein the two guide rails are a first guide rail and a second guide rail, and the two mass bodies are a first mass body and a second mass body, wherein the first guide rail and the second guide rail are arranged sequentially from top to bottom; The first mass body is slidably disposed on the first guide rail, and the second mass body is slidably disposed on the second guide rail; The first mass body and the second mass body are connected by the connecting member; The connector is a flexible connector.
[0009] The first guide rail and / or the second guide rail are either arc-shaped or linear guide rails. If the first guide rail and / or the second guide rail are arc-shaped, the inner side of the arc-shaped guide rail faces upward.
[0010] The first mass body includes a first upper mass body, a first lower mass body, a first frame, and a first roller, wherein the first upper mass body and the first lower mass body are respectively disposed above and below the first frame; The first frame is fitted onto the first guide rail, the first roller is disposed on the first frame, and the first roller is disposed on the top surface of the first guide rail.
[0011] The second mass body includes a second upper mass body, a second lower mass body, a second frame, and a second roller. The second upper mass body and the second lower mass body are respectively disposed above and below the second frame. The second frame is fitted onto the second guide rail, the second roller is mounted on the second frame, and the second roller is mounted on the top surface of the second guide rail.
[0012] The mass ratio between the mass of the first mass body and the mass of the second mass body ranges from 1:9 to 9:1.
[0013] The connector includes a plurality of connecting ropes, the two ends of which are respectively connected to the first mass body and the second mass body.
[0014] Multiple connectors are provided, each connector including a telescopic member and a connecting seat. The connecting seat is disposed on the second mass body. One end of the telescopic member is connected to the first mass body, and the other end is connected to the connecting seat via a ball joint.
[0015] When the guide rail is a linear guide rail, a gear is provided on the mass body on the linear guide rail, and a rack or toothed belt is provided on the linear guide rail; The gear meshes with the rack or toothed belt, and a motor is mounted on the gear, with the output shaft of the motor coaxially connected to the gear. The axial direction of the gear is either vertical or horizontal.
[0016] A conductor is provided on the guide rail, and a magnet is provided on the mass body; Alternatively, a magnet may be provided on the guide rail, and a conductor may be provided on the mass body; When the mass moves, the magnet and the conductor move to cut magnetic field lines.
[0017] The first guide rail is the arc-shaped guide rail, and the second guide rail is the linear guide rail.
[0018] The following beneficial effects can be achieved by using the structure described above in this invention: The first and second mass bodies are connected by a flexible connector, which allows relative movement between them while limiting their range of motion. When the tower sways, the first and second mass bodies move on the first and second guide rails respectively, allowing relative movement within a certain range. By setting the two mass bodies to move on the two guide rails respectively, energy dissipation is improved, achieving a better vibration damping effect. The first upper mass, the first lower mass, the second upper mass, and the second lower mass can all be composed of multi-layer structures. According to actual usage requirements, the mass of the first mass and the second mass can be adjusted to adjust the mass ratio between the first mass and the second mass, thereby achieving frequency modulation effect, obtaining the optimal mass ratio, and obtaining better vibration reduction effect. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram of another embodiment of the present application.
[0020] In the diagram: 100, first mass body; 110, first upper mass body; 120, first lower mass body; 130, first frame; 140, first roller; 200, first guide rail; 300, second mass body; 310, second upper mass body; 320, second lower mass body; 330, second frame; 340, second roller; 400, second guide rail; 500, connector; 510, telescopic component; 520, connecting seat; 600, rack; 700, motor; 800, gear. Detailed Implementation
[0021] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.
[0022] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product or device.
[0023] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.
[0024] refer to Figure 1-2 The tower damper shown includes: a connector 500, two guide rails and two mass bodies, the two guide rails being a first guide rail 200 and a second guide rail 400, and the two mass bodies being a first mass body 100 and a second mass body 300, the first guide rail 200 and the second guide rail 400 being arranged sequentially from top to bottom; The first mass body 100 is slidably disposed on the first guide rail 200, and the second mass body 300 is slidably disposed on the second guide rail 400; The first mass body 100 and the second mass body 300 are connected by a connector 500; Connector 500 is a flexible connector.
[0025] Based on the above structure, during installation, the first guide rail 200 and the second guide rail 400 are mounted on the tower, with the first guide rail 200 and the second guide rail 400 horizontally aligned. The first mass body 100 and the second mass body 300 are connected by a flexible connector, ensuring relative movement between the first mass body 100 and the second mass body 300 while limiting their range of motion. When the tower sways, the first mass body 100 and the second mass body 300 move on the first guide rail 200 and the second guide rail 400 respectively. The first mass 100 and the second mass 300 can move relative to each other within a certain range. By setting the two mass bodies to move on two guide rails respectively, energy can be better dissipated, and a better vibration damping effect can be achieved. Furthermore, by adjusting the mass of the first mass 100 and the second mass 300, the mass ratio between the first mass 100 and the second mass 300 can be adjusted, thereby achieving a frequency modulation effect. There is no need to set up a flywheel for frequency modulation, and the virtual mass discount without the flywheel results in a better vibration reduction effect. Moreover, by setting the first guide rail 200 and the second guide rail 400, the two mass bodies will only move in the same vertical plane and will not rotate horizontally, thus requiring less space.
[0026] In this embodiment, the first guide rail 200 and / or the second guide rail 400 are either arc-shaped guide rails (arc-shaped rails have a smaller diameter, are easier to process, have a wider frequency modulation range, and are more widely applicable) or linear guide rails. If the first guide rail 200 and / or the second guide rail 400 are arc-shaped guide rails, the inner side of the arc-shaped guide rail faces upward. That is to say, there are four situations: first, both guide rails are linear guide rails; second, both guide rails are arc-shaped guide rails; third, the first guide rail 200 is a linear guide rail and the second guide rail 400 is an arc-shaped guide rail; fourth, the first guide rail 200 is an arc-shaped guide rail and the second guide rail 400 is a linear guide rail. The specific choice is adapted according to the actual usage requirements. It is preferred to adopt the third or fourth setting, using a structure that combines arc-shaped rails and linear rails. In this embodiment, the first guide rail 200 is an arc-shaped guide rail and the second guide rail 400 is a linear guide rail.
[0027] Among them, such as Figure 1 As shown, the first mass body 100 includes a first upper mass body 110, a first lower mass body 120, a first frame 130, and a first roller 140. The first upper mass body 110 and the first lower mass body 120 are respectively disposed above and below the first frame 130. The first frame 130 is sleeved on the first guide rail 200, and the first roller 140 is disposed on the first frame 130 and on the top surface of the first guide rail 200. That is, by setting the first frame 130, the first upper mass body 110, the first lower mass body 120, and the first roller 340 are integrated, and by setting the first roller 140 on the first frame 130, the first mass body 100 and the first guide rail 200 are in a rolling connection.
[0028] Similarly, such as Figure 1 As shown, the second mass body 300 includes a second upper mass body 110, a second lower mass body 320, a second frame 330, and a second roller 340. The second upper mass body 310 and the second lower mass body 320 are respectively disposed above and below the second frame 330. The second frame 330 is sleeved on the second guide rail 400, and the second roller 340 is disposed on the second frame 330 and on the top surface of the second guide rail 400. That is to say, by setting the second frame 330, the second upper mass body 110, the second lower mass body 320, and the second frame 330 are integrated, and by setting the second roller 340 on the second frame 330, the second mass body 300 and the second guide rail 400 are made to be in a rolling connection.
[0029] Further optimization involves the fact that, in this embodiment, the mass ratio between the first mass body 100 and the second mass body 300 ranges from 1:9 to 9:1. In actual use, the first upper mass body 110, the first lower mass body 120, the second upper mass body 110, and the second lower mass body 320 can all be composed of multi-layer structures. According to actual usage requirements, the masses of the first mass body 100 and the second mass body 300 can be adjusted to achieve the adjustment of the mass ratio between the first mass body 100 and the second mass body 300, thereby achieving a frequency modulation effect, obtaining the optimal mass ratio, and achieving a better vibration reduction effect.
[0030] The connector 500 can be provided in multiple ways. Each connector 500 includes a telescopic member 510 and a connecting seat 520. The connecting seat 520 is disposed on the second mass body 300. One end of the telescopic member 510 is connected to the first mass body 300, and the other end is ball-jointed to the connecting seat 520. The purpose of this arrangement is that the telescopic member 510 can adaptively extend and retract when the first mass body 100 and the second mass body 300 move relative to each other. The ball-joint connection between the telescopic member 510 and the connecting seat 520 allows the angle between the telescopic member 510 and the horizontal plane to change adaptively when the first mass body 100 and the second mass body 300 move relative to each other. In addition to the above-mentioned structure of the connector 500, the connector 500 can also be composed of several connecting ropes. The two ends of the connecting ropes are respectively connected to the first mass body 100 and the second mass body 300. The connecting ropes can be steel cables or elastic ropes, etc., and the length of the connecting ropes should be greater than the minimum distance between the first mass body 100 and the second mass body 300 and less than the maximum distance between the first mass body 100 and the second mass body 300.
[0031] like Figure 1 or Figure 2 As shown, in this embodiment, one of the two guide rails is a linear guide rail, and the other is an arc-shaped guide rail. When the guide rail is a linear guide rail, a gear 800 is provided on the mass body on the linear guide rail, and a rack 600 or a toothed belt is provided on the linear guide rail. The gear 800 meshes with the rack 600 or the toothed belt, and a motor 700 is provided on the gear 800. The output shaft of the motor 700 is coaxially connected to the gear 800. Thus, when the mass body moves on the linear guide rail, the gear moves relative to the rack or toothed belt, the gear rotates, and in turn, the output shaft of the motor 700 rotates. The rotation of the gear 800 causes the shaft of the motor 700 to rotate, driving the motor to become a generator. Under electromagnetic action, voltage is generated, and two wires are led out and connected at both ends to a resistor with an appropriate electromagnetic damping coefficient. Energy can be consumed by heating through the resistor. The axial direction of the gear 800 is vertical (e.g., ...). Figure 2 (as shown) or horizontal direction (such as) Figure 1As shown), in actual use, the selection is made according to the available space and other conditions. In this embodiment, the axial direction of the gear 800 is vertical, so that the motor 700 can be placed vertically, which reduces the horizontal space requirements of this application and makes the damper more compact in the horizontal direction, adapting to the space inside the tower.
[0032] A further optimization involves placing a conductor on the guide rail and a magnet on the mass; or placing a magnet on the guide rail and a conductor on the mass. In other words, when the mass moves, the magnet and conductor cut through magnetic field lines, achieving an electromagnetic damping effect and further improving the energy absorption and vibration suppression of the damper.
[0033] The above are merely preferred embodiments of this application, and the present invention is not limited to the above embodiments. It is understood that other improvements and variations that are directly derived or conceived by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included within the protection scope of the present invention.
Claims
1. A tower damper, characterized in that, include: The connector (500), two guide rails and two mass bodies, the two guide rails being a first guide rail (200) and a second guide rail (400), the two mass bodies being a first mass body (100) and a second mass body (300), the first guide rail (200) and the second guide rail (400) being arranged sequentially from top to bottom; The first mass (100) is slidably disposed on the first guide rail (200), and the second mass (300) is slidably disposed on the second guide rail (400); The first mass body (100) and the second mass body (300) are connected by the connector (500); The connector (500) is a flexible connector.
2. A tower damper according to claim 1, characterized in that: The first guide rail (200) and / or the second guide rail (400) are arc-shaped guide rails or straight guide rails. If the first guide rail (200) and / or the second guide rail (400) are arc-shaped guide rails, the inner side of the arc-shaped guide rail faces upward.
3. A tower damper according to claim 2, characterized in that: The first mass body (100) includes a first upper mass body (110), a first lower mass body (120), a first frame (130), and a first roller (140). The first upper mass body (110) and the first lower mass body (120) are respectively disposed above and below the first frame (130). The first frame (130) is sleeved on the first guide rail (200), the first roller (140) is disposed on the first frame (130), and the first roller (140) is disposed on the top surface of the first guide rail (200).
4. A tower damper according to claim 2, characterized in that: The second mass body (300) includes a second upper mass body (110), a second lower mass body (320), a second frame (330), and a second roller (340). The second upper mass body (310) and the second lower mass body (320) are respectively disposed above and below the second frame (330). The second frame (330) is sleeved on the second guide rail (400), the second roller (340) is disposed on the second frame (330), and the second roller (340) is disposed on the top surface of the second guide rail (400).
5. A tower damper according to any one of claims 1-4, characterized in that: The mass ratio between the mass of the first mass body (100) and the mass of the second mass body (300) ranges from 1:9 to 9:
1.
6. A tower damper according to any one of claims 1-4, characterized in that: The connector (500) includes a plurality of connecting ropes, the two ends of which are respectively connected to the first mass body (100) and the second mass body (300).
7. A tower damper according to any one of claims 1-4, characterized in that: Multiple connectors (500) are provided. Each connector (500) includes a telescopic member (510) and a connecting seat (520). The connecting seat (520) is disposed on the second mass body (300). One end of the telescopic member (510) is connected to the first mass body (300), and the other end is ball-jointed to the connecting seat (520).
8. A tower damper according to claim 2, characterized in that: When the guide rail is a linear guide rail, a gear (800) is provided on the mass body on the linear guide rail, and a rack (600) or a toothed belt is provided on the linear guide rail; The gear (800) meshes with the rack (600) or the toothed belt, and a motor (700) is provided on the gear (800), with the output shaft of the motor (700) coaxially connected to the gear (800); The axial direction of the gear (800) is either vertical or horizontal.
9. A tower damper according to claim 2, characterized in that: A conductor is provided on the guide rail, and a magnet is provided on the mass body; Alternatively, a magnet may be provided on the guide rail, and a conductor may be provided on the mass body; When the mass moves, the magnet and the conductor move to cut magnetic field lines.
10. A tower damper according to claim 2, characterized in that: The first guide rail (200) is the arc-shaped guide rail, and the second guide rail (400) is the linear guide rail.