A ring-shaped multi-split vibration-damping anti-dancing device

Abstract

The invention discloses an annular multi-split vibration-damping galloping preventer which comprises a closed annular tube. The external surface of the annular tube is provided with a plurality of lead clamps. The annular tube is internally provided with a vibration damping system. Furthermore antifreezing and anti-corrosion liquid is filled in the annular tube. According to the annular multi-split vibration-damping galloping preventer, integrated design of a spacer rod a multi-split galloping preventer is realized. The vibration damping system which is arranged in the closed annular tube can restrain the vertical vibration amplitude of the lead to a certain extent by means of self weight for preventing an overlarge tension load of the lead because of excessive deformation of the lead on one hand; and on the other hand, the vibration damping system can generate resonance before a power transmission lead for consuming system energy, thereby reducing torsion and vibration degrees, and prolonging service life of a lead system. Through reducing torsion amplitude of the multi-split lead in galloping, the annular multi-split vibration-damping galloping preventer has functions of effectively restraining vibration amplitude, improving a lead operation environment, and prolonging service life of the lead.

Description

technical field [0001] The invention relates to the research field of galloping of power transmission lines, in particular to an annular multi-split vibration-reducing and galloping-proof device. Background technique [0002] As the scale of the power grid continues to increase, the level of transmission voltage is getting higher and higher. How to effectively, safely and reliably improve the transmission capacity is a major problem facing my country's power grid. At present, in order to meet the current situation of increasing transmission capacity, reduce corona loss and corona interference, and ensure the economy and reliability of transmission lines, multi-split conductors are widely used in overhead transmission lines, and the problem of galloping damage of split conductors has become a problem. Key issues that affect the safe operation of the power grid. [0003] In ultra-high voltage multi-split conductor transmission lines, galloping is usually accompanied by the al...

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Problems solved by technology

[0003] In ultra-high voltage multi-split conductor transmission lines, galloping is usually accompanied by the alternating torsion and vibration of the conductor around the axis. In several test bases, through the observation and analysis of galloping damage examples of ice-coated multi-split conductors, more It is because the torsion and vibration during galloping lead to the breakage of the wire and the damage of the fittings, resulting in major economic losses and a serious threat to the safe operation of the transmission line

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