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Pendulum-type damping anti-galloping device

An anti-dancing device and damping technology, applied in mechanical vibration damping devices, springs/shock absorbers, liquid shock absorbers, etc., to achieve the effect of being suitable for large-scale popularization, good economic performance and easy installation

Active Publication Date: 2011-09-28
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are almost no design schemes that can suppress both lateral and torsional galloping excitations at the same time, and meet the economic requirements and meet the actual needs of the project.

Method used

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  • Pendulum-type damping anti-galloping device

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Embodiment Construction

[0015] The pendulum type damping anti-dancing device of the present invention comprises a connecting plate 1, a damping vibration reduction structure (spring structure 2 and damper 3) and a double pendulum structure 4, and the anti-dancing device is based on the original double pendulum anti-dancing device A damping structure is added. The connecting plate 1 plays the role of fixedly connecting the damping structure and the spacer body. The damping vibration reduction structure includes a spring structure 2 and a damper 3, which suppress galloping by dissipating the wind energy input into the wire system. The spring structure 2 is installed between the connecting plate 1 and the damper 3 to absorb energy. When the wire of the transmission line is about to gallop, the force that causes the wire to dance is very large. The spring structure 2 can be installed by compressing the spring The energy is instantly stored in the spring and then released slowly. The damping structure ma...

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Abstract

The invention relates to a pendulum-type damping anti-galloping device consisting of a yoke plate, a damping vibration attenuation structure (a spring structure and a damper) and a double-pendulum. The structure of the anti-galloping device saves the advantages of the conventional double-pendulum anti-galloping device and adopts the damping vibration attenuation structure. When the wires of the overhead transmission line gallop, the pendulum-type damping anti-galloping device itself serves the functions of energy cushioning, energy absorption and energy consumption and finally achieves the purpose of galloping inhibition. The anti-galloping device has the advantages of simple structure, good anti-galloping performance and easy installation,is matched with various spacing rods, is economicand is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the field of electric special fittings, in particular to a pendulum-type damping anti-swing device for overhead transmission lines. Background technique [0002] Ice-covered galloping of overhead transmission wires can easily lead to phase-to-phase flashover, short circuit, disconnection, damage to connecting fittings, and even tower collapse, which seriously endangers the safe operation of the line. The galloping phenomenon is a form of self-excited vibration under the action of wind load in the conductor system. Whether the galloping excitation is Den Hartog’s vertical excitation mode or Nigol’s torsional excitation mode, it is the negative damping effect of the conductor system that causes energy accumulation to occur. dynamical instability. Increasing the damping of the wire structure to dissipate the wind energy input into the wire system is a fundamental way to suppress galloping. At the same time, for the split conduct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/04F16F15/023H02G7/14F16F9/14
Inventor 朱宽军刘彬李新民孙娜
Owner CHINA ELECTRIC POWER RES INST
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