A lightning rod structure based on eddy current tuned mass damper

Abstract

The utility model discloses a lightning rod structure based on eddy current tuned mass damper, include: main part, including through the flange and bolt installation several cylinders, damper group, including several along the cylinder radial even installation's damper. Damper group includes the mounting ring and installs the damper on the mounting ring. The damper is the eddy current tuned mass damper. The damper includes cylinder, conductor cylinder, mass unit, spring, magnetic steel and buffer ring, and the conductor cylinder is coaxial with the cylinder cooperation, and the mass unit is slidably arranged in the conductor cylinder, and the magnetic steel is arranged between two mass units, and the buffer ring is arranged on one side of the mass unit, and the spring is supported on the outside of the buffer ring. The main part bottom is installed with the fixed base can effectively reduce the dynamic response of lightning rod under the action of wind load, reduces the fracture and the collapse accident probability.

Description

Technical Field

[0001] This utility model relates to the field of lightning rod structures, specifically a lightning rod structure based on an eddy current tuned mass damper. Background Technology

[0002] As tall structures, lightning rods in substations are prone to strong vibrations under wind loads, leading to structural fatigue damage and even fracture and collapse, causing significant safety hazards and economic losses. Substation lightning rods are typically steel pipe lightning rods. The main measure to suppress wind-induced vibration in steel pipe lightning rods is aerodynamic control. By altering the aerodynamic shape of the steel pipe lightning rod, the regular shedding of vortices is disrupted, thus preventing vortex-induced vibration and addressing vortex-induced fatigue in steel pipe lightning rods. Aerodynamic measures can suppress vortex-induced resonance in steel pipe lightning rods to a certain extent, but they usually require a large number of baffles or other devices along the pipe, increasing the wind-blocking area, increasing the wind load, affecting the overall structural strength of the steel pipe lightning rod, and the numerous baffles also detract from the aesthetics. Eddy current tuned mass dampers are a common vibration reduction structure that utilizes the principle of converting vibrational energy into eddy currents during vibration. They have advantages such as high reliability, good durability, and relatively simple construction. Utility Model Content

[0003] The purpose of this invention is to provide a lightning rod structure based on an eddy current tuned mass damper to solve the problem of poor vibration reduction effect of existing lightning rods.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lightning rod structure based on an eddy current tuned mass damper, comprising:

[0005] The main body consists of several columns mounted via flanges and bolts;

[0006] The damper assembly comprises several dampers uniformly installed radially along the column.

[0007] As a further improvement to the above technical solution:

[0008] The damper assembly includes a mounting ring disposed on the column, and the damper is mounted on the mounting ring.

[0009] The damper is an eddy current tuned mass damper.

[0010] The damper includes a cylinder, a conductor cylinder, a mass unit, a spring, a magnet, and a buffer ring. The conductor cylinder is coaxially fitted with the cylinder. The mass unit is slidably disposed inside the conductor cylinder. A magnet is disposed between two mass units. The buffer ring is disposed on one side of the mass unit. The spring is supported on the outside of the buffer ring.

[0011] A mounting base is installed at the bottom of the main body.

[0012] The cylinder block is a split design, consisting of an upper ring and a lower ring.

[0013] The mounting ring and the damper are threaded together.

[0014] The mass unit includes several mass adjustment modules.

[0015] The mounting ring includes several arc-shaped blocks connected by bolts.

[0016] The arc-shaped block is equipped with locking screws.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] Optimized damper structure design: A cantilever structure is adopted, with three aluminum damping cylinders evenly arranged radially along the lightning rod and rigidly connected to the main structure of the lightning rod via clamps. This enhances the overall structural stability and effectively improves the ability to suppress lightning rod vibration. Compared to traditional pendulum dampers, this design allows for a more stable installation on the lightning rod and is less prone to loosening or displacement even in complex wind environments, ensuring the damper's continuous and stable operation.

[0019] Strong multi-directional vibration adaptability: Each aluminum damping cylinder employs a spring-oscillator structure, combining a permanent magnet with an oscillator. Precise frequency matching and linkage between the three damping cylinders are achieved through fine adjustment of the oscillator mass. When the lightning rod vibrates under the influence of winds from different directions, the internal oscillator movement drives the magnet to cut magnetic field lines, generating magnetic resistance and dissipating the lightning rod's kinetic energy. The three damping cylinders work collaboratively to comprehensively address the multi-directional vibrations of the lightning rod caused by complex wind conditions, greatly enhancing the lightning rod's multi-directional adaptability in complex wind environments and significantly reducing the risk of lightning rod failure and collapse due to vibration. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0021] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0022] Figure 3 This utility model Figure 1 Enlarged structural diagram at point B;

[0023] Figure 4 This is one of the schematic diagrams of the damper assembly structure of this utility model;

[0024] Figure 5 This is the second schematic diagram of the damper assembly structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the internal structure of the damper of this utility model. Reference numerals: 1. Main body; 11. Column; 12. Fixing base; 2. Damper assembly; 21. Damper; 211. Cylinder; 212. Conductor cylinder; 213. Sealing end cap; 214. Mass unit; 215. Spring; 216. Magnet; 217. Buffer ring; 22. Mounting ring; 221. Arc-shaped block; 222. Locking screw. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1 to 5As shown, the lightning rod structure based on an eddy current tuned mass damper in this embodiment includes: a main body 1, comprising several columns 11 mounted by flanges and bolts, wherein each column 11 is a frustum-shaped structure with its diameter increasing from top to bottom (illustrated as a frustum-shaped cone); and a damper group 2, comprising several dampers 21 uniformly installed radially along the columns 11. In this embodiment, the damper group 2 includes three uniformly distributed dampers 21, which are eddy current tuned mass dampers.

[0031] The damper assembly 2 includes a mounting ring 22, which is mounted on the column 11, and the dampers 21 are mounted on the mounting ring 22. In this embodiment, the mounting ring 22 includes three arc-shaped blocks 221, which are connected by bolts. The three arc-shaped blocks 221 are respectively mounted on three dampers 21, and the arc-shaped blocks 221 and the dampers 21 are threaded together. Locking screws 222 are provided on the arc-shaped blocks 221. The locking screws 222 further secure one end of the damper 21, preventing the damper 21 from falling off.

[0032] like Figure 6 As shown, the damper 21 includes a cylinder 211, a conductor cylinder 212, mass units 214, a spring 215, a magnet 216, and a buffer ring 217. The conductor cylinder 212 is coaxially fitted with the cylinder 211. The mass units 214 are slidably disposed within the conductor cylinder 212, and a magnet 216 is disposed between two mass units 214. The buffer ring 217 is disposed on one side of the mass units 214, and the spring 215 is supported on the outside of the buffer ring 217. The mounting ring 22 is threadedly connected to the damper 21. In this embodiment, the cylinder 211 has a hollow structure, with a sealing end cap 213 at one end and a threaded mounting post end cap at the other end. The damper 21 is installed through the threaded mounting post end cap. Eddy current tuned mass dampers are existing devices. Their principle is that "when a bulk metal conductor moves in a changing magnetic field, a vortex-like induced current is generated inside the conductor. This current consumes kinetic energy and converts it into heat energy, thus achieving energy dissipation." This is not detailed here, but the aforementioned structure can realize the relevant principle.

[0033] A mounting base 12 is installed at the bottom of the main body 1 to fix the entire lightning rod to the foundation, thereby enhancing the overall stability of the lightning rod. The mounting base 12 is usually an anchoring base, which is connected to ground anchors.

[0034] In another embodiment, the cylinder body 211 is a split design (not shown in the figure), including an upper ring body and a lower ring body, which are tightly connected by screws, making it convenient to maintain and disassemble the damper 21.

[0035] In another embodiment, the mass unit 214 includes several adjustable mass modules. These adjustable mass modules consist of cylindrical mass blocks of varying thicknesses, and can be adjusted by adding or removing a certain number of additional masses to change the weight of the unit, thereby adjusting the damper frequency.

[0036] The combination of mass unit 214 and magnet 216 can be such that mass unit 214 has radial openings and strip magnets 216 are evenly arranged on it, or magnets with the same diameter as mass unit 214 can be arranged with mass unit in the damper axis.

[0037] To enhance the sliding effect of the damper mass unit, grease can be applied inside the conductor cylinder, or polytetrafluoroethylene (PTFE) strips (which have a low coefficient of friction and facilitate movement) can be attached to the outer diameter of the mass unit.

[0038] The lightning rod structure based on an eddy current tuned mass damper of this invention can effectively reduce the dynamic response of the lightning rod under wind load, and reduce the probability of fracture and collapse accidents. The above description is merely an embodiment of this invention; common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description, and all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lightning rod structure based on an eddy current tuned mass damper, characterized in that, include: The main body (1) includes several columns (11) installed by flanges and bolts; The damper assembly (2) includes several dampers (21) that are uniformly installed radially along the column (11). The damper assembly (2) includes a mounting ring (22), which is mounted on the column (11). The damper (21) is mounted on the mounting ring (22). The mounting ring (22) and the damper (21) are threaded together. The mounting ring (22) includes several arc-shaped blocks (221), which are connected by bolts. The damper (21) is an eddy current tuned mass damper. The damper (21) includes a cylinder (211), a conductor cylinder (212), a mass unit (214), a spring (215), a magnet (216), and a buffer ring (217). 212) Coaxially cooperating with the cylinder (211), the mass unit (214) is slidably disposed in the conductor cylinder (212), a magnet (216) is disposed between the two mass units (214), the buffer ring (217) is disposed on one side of the mass unit (214), and the spring (215) is supported on the outside of the buffer ring (217); the cylinder (211) is a split design, including an upper ring body and a lower ring body; the mass unit (214) includes several adjusting mass modules; a locking screw (222) is disposed on the arc block (221); a fixed seat (12) is installed at the bottom of the main body (1).

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