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Transmission wire torsion type anti-vibration device

A technology of transmission wires and anti-vibration devices, which is applied in the field of overhead transmission lines, can solve the problems of no torsional vibration protection, etc., and achieve the effects of significant energy consumption, small quality, and good economy

Active Publication Date: 2019-09-10
CHINA ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the commonly used anti-vibration devices in the prior art do not have protection against torsional vibrations, the present invention provides a torsional anti-vibration device for power transmission wires

Method used

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  • Transmission wire torsion type anti-vibration device
  • Transmission wire torsion type anti-vibration device
  • Transmission wire torsion type anti-vibration device

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Embodiment Construction

[0042] In order to better understand the present invention, the content of the present invention will be further described below in conjunction with the accompanying drawings and examples.

[0043] 1. Anti-vibration principle

[0044] The characteristic of the torsional anti-vibration device for transmission wires based on electromagnetic damping is that it can transform the kinetic energy of the vibrating wire into heat energy by relying on the friction between the strands of the steel strands like an ordinary anti-vibration hammer to consume the energy of the wind input wire, and can pass through The electromagnetic damping device in each closed shell introduces nonlinear electromagnetic damping into the traditional damped spring vibrator system, forming a nonlinear energy slot, and adding an anti-vibration structure for torsional vibration, broadening the vibration-absorbing frequency range, improving Vibration reduction effect.

[0045] The electromagnetic damping device ...

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Abstract

The invention provides a transmission wire torsion type anti-vibration device. The transmission wire torsion type anti-vibration device is hung on a transmission wire, and comprises a sealing device used for preventing electromagnetic field interference and an electromagnetic damping device (2), wherein the sealing device is of a hollow closed structure and wraps the electromagnetic damping device(2); the electromagnetic damping device (2) is used for generating electromagnetic damping during vibration so as to prevent the wire from generating torsional vibration, wherein the electromagneticdamping device (2) comprises a horizontal guide pipe (7), and a first eccentric guide pipe and a second eccentric guide pipe (8) which are connected with the horizontal guide pipe (7); and when the torsional vibration is generated by the electromagnetic damping device (2), the first eccentric guide pipe and the second eccentric guide pipe (8) generate torsion force which is opposite to the torsiondirection of the torsional vibration. According to the transmission wire torsion type anti-vibration device, the electromagnetic damping can be generated in the torsion type vibration of the transmission wire, so that the energy consumption is further increased, and the vibration of the transmission wire can be better reduced.

Description

technical field [0001] The invention relates to the field of conductors of overhead transmission lines, in particular to a torsion-type anti-vibration device for transmission conductors. Background technique [0002] Breeze vibration is one of the important factors that threaten the safe operation of UHV transmission lines, and it is a problem that line design, construction and operation management departments must attach great importance to. Long-term breeze vibration can easily lead to damage or even failure of various components of the transmission line (ground wire, fittings, etc.), which seriously threatens the safe operation of the transmission line. [0003] Overhead line breeze vibration is a type of overhead line vibration mainly in the vertical direction caused by the wind. Its vibration frequency is 3-120Hz, and its amplitude is on the order of the diameter of the overhead line. The wind speed that causes this vibration is usually in the range of 0.5-10m / s, so it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/14
CPCH02G7/14
Inventor 司佳钧周立宪王景朝刘胜春刘彬赵彬牛海军杨加伦张军刘臻尹泉李冬青顾建郎超
Owner CHINA ELECTRIC POWER RES INST
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