Damping device and wire low-frequency vibration suppression device comprising same

Abstract

The invention provides a damping device and a wire low-frequency vibration suppression device comprising the same. The damping device comprises a hollow protective shell (6), a mass block (5) locatedin the protective shell, an elastic piece and a damping medium. The damping medium wraps the mass block (5), and the mass block (5) is fixed to the inner wall of the protective shell (1) through the elastic piece. The height of the mass block (5) is smaller than that of the hollow part of the protective shell (6). The wire low-frequency vibration suppression device provided by the invention can absorb and consume energy generated in a low-frequency vibration process of a wire in a low-frequency interval of 0.1-3 Hz, and has energy consumption and suppression effects on wire vibration of different frequencies; through the viscous damping liquid (10), large viscous resistance can be generated in the up-down vibration process of the mass block, mechanical energy of the mass block (5) is converted into liquid internal energy, the viscous damping characteristic of the wire is fully improved, wind-induced vibration of the wire is prevented, and the wire is protected against damage.

Description

technical field [0001] The invention relates to the technical field of power grid disaster prevention and reduction, in particular to a vibration damping device and a wire low-frequency vibration suppression device including the vibration damping device. Background technique [0002] The harm of wind to the conductors, in addition to the power outage accidents caused by strong winds, such as inverted rods, crooked rods, and broken wires, etc., will also cause the conductors to vibrate due to the wind at low or medium wind speeds, which will cause the conductors to jump and cause collisions. Therefore, it is necessary to suppress wind-induced vibration of conductors to reduce the probability of accidents and repair costs as much as possible. [0003] The wind-induced vibration of conductors mainly includes four phenomena: breeze vibration (5-120 Hz), sub-gap vibration (1-3 Hz), ice-covered galloping (0.1-3 Hz) and wind deflection. Breeze vibration and ice-covered galloping g...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the limitations of the suppression measures in the above-mentioned prior art and the shortcomings that the suppression effect is not obvious, the present invention provides a vibration damping device and a wire low-frequency vibration suppression device including the vibration damping device. The vibration damping device includes a hollow protective shell ( 6), the mass block (5), elastic member and damping medium located in the protective shell (6); the damping medium wraps the mass block (5), and the mass block (5) is fixed to the protective shell (6) through the elastic member ) of the inner wall; and the height of the mass block (5) is less than the height of the hollow part of the protective shell (6), the suppression limitation is small, and the suppression effect is obvious

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