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Lightning rod liquid collision type damping system

A technology of damping system and lightning rod, which is applied in the direction of spring/shock absorber, vibration suppression adjustment, mechanical equipment, etc., can solve the problems of low damping efficiency of frequency modulation mass damper, high cost of fixed equipment, unsatisfactory damping effect, etc., and achieve design Novel ideas, simple structure, and improved damping efficiency

Inactive Publication Date: 2018-10-02
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The frequency-tuned mass damper (TMD) mainly relies on the vibration of the mass block to generate damping. The fixed equipment required to fix the mass block is expensive, and because it is fixedly connected to the building, it cannot produce damping. Therefore, the frequency-tuned mass damper (TMD) ) damping efficiency is very low
The tuned liquid damper (TMD) is damped by the sloshing of the liquid in its water tank, but the water tank is fixedly connected to the building, and translation cannot occur, which in turn causes limited sloshing of the liquid, and its damping effect is not ideal

Method used

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  • Lightning rod liquid collision type damping system
  • Lightning rod liquid collision type damping system

Examples

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Effect test

Embodiment 1

[0031] The present invention provides a liquid collision damping system for a lightning rod. The lightning rod 1 is in the form of a conical shell, and the damping system is arranged in the shell; the damping system includes a damping rope 2 connected to the upper end of the shell. And a damping container connected to the lower end of the damping rope 2; a liquid damping medium 4 is arranged in the damping container.

[0032] The damping container includes six damping boxes 3, which are sequentially connected by damping ropes 2; each of the damping boxes 3 is respectively provided with a liquid damping medium 4.

[0033] The liquid damping medium 4 includes antifreeze.

[0034] The volume of the damping medium 4 in the damping box 3 is 30-60% of the volume of the damping box 3 .

[0035] The upper end of the damping box body 3 is provided with an opening, and a piston 5 screwed therein is provided in the opening.

[0036] The upper end and the lower end of the damping box bo...

Embodiment 2

[0046] The structure of this embodiment is the same as that of Embodiment 1, except that the materials of the housing and the damping box are as follows:

[0047] The housing includes the following components in parts by mass:

[0048] Cu: 0.35%, Mn: 1.5%, Fe: 0.4%, Si: 0.11%, Ti: 0.001%, B: 0.003%, RE: 0.05%, the balance is Al and impurities, and impurities ≤ 0.1%;

[0049] The damping box includes the following components by mass fraction:

[0050] C: 2%; N: 3%, In: 1%, Pd: 0.1%, Zr: 0.1%, Ir: 0.5%, Rh: 0.2%, Fe: 30%.

[0051] The material of the housing and the damping box provided in this embodiment can ensure the stability of the structure, guarantee the damping effect of the damping system, and greatly increase the service life.

Embodiment 3

[0053] The structure of this embodiment is the same as that of Embodiment 1, except that the materials of the housing and the damping box are as follows:

[0054] The housing includes the following components in parts by mass:

[0055] Cu: 0.20%, Mn: 1.0%, Fe: 0.3%, Si: 0.95%, Ti: 0.008%, B: 0.018%, RE: 0.20%, the balance is Al and impurities, and impurities ≤ 0.1%;

[0056] The damping box includes the following components by mass fraction:

[0057] C: 1%; N: 2%, In: 0.8%, Pd: 0.06%, Zr: 0.7%, Ir: 1.0%, Rh: 2%, Fe: 40%.

[0058] The material of the housing and the damping box provided in this embodiment can ensure the stability of the structure, guarantee the damping effect of the damping system, and greatly increase the service life.

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Abstract

The invention provides a lightning rod liquid collision type damping system. A lightning rod is a taper shell, the damping system is arranged in the shell and comprises a damping rope connected with the upper end of the shell and a damping container connected to the lower end of the damping rope; and liquid-state damping media are contained in the damping container. The lightning rod liquid collision type damping system is novel in design thought, simple in structure and low in manufacturing cost, the using rate of the damping system is greatly improved, and the damping efficiency is obviouslyimproved.

Description

technical field [0001] The invention relates to a damping device in a lightning rod, in particular to a liquid collision type damping system for a lightning rod. Background technique [0002] In order to avoid the impact of lightning on the power equipment in the substation, lightning rods need to be installed in the substation. Lightning rods are mostly metal cylinders whose diameter gradually decreases from bottom to top. When the wind force reaches a certain level, the fluid bypasses the metal cylinder to generate a wake vortex, which causes vortex-induced vibration of the lightning rod. This vibration will cause the lightning rod to shake violently, increase its wind vibration coefficient and dynamic load, and cause fatigue damage to its structure. Therefore, damping needs to be installed in the lightning rod to reduce the impact of vibration. [0003] At present, the damping system in the lightning rod is mainly two kinds of tuned mass damper (TMD) and tuned liquid d...

Claims

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Application Information

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IPC IPC(8): F16F15/023F16F15/08
CPCF16F15/023F16F15/08
Inventor 刘海锋王旭明韩军科李玉杰朱彬荣
Owner CHINA ELECTRIC POWER RES INST
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