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Semi-solid single-point waving prevention device

An anti-dancing device, single-point technology, which is applied in the field of semi-solid single-point anti-dancing device, can solve problems such as line safety operation threats, tripping and power failure, and hardware damage, etc., to achieve suppression of transmission line galloping, good energy consumption, The effect of simple structure

Inactive Publication Date: 2014-01-01
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the excessive amplitude, galloping is likely to cause phase-to-phase flashover, hardware damage, tripping and power failure, broken wires, and downed poles and towers, which pose a serious threat to the safe operation of the line and cause major economic losses and social impacts.

Method used

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  • Semi-solid single-point waving prevention device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The cover 1 is connected to the base 8 through the spring 2. The spring 2 provides a certain rigidity, which can not only meet the requirement of the initial displacement under the static load, but also ensure that the piston 6 can return to the initial position after each vibration; There is an outer cylinder 7, the outer cylinder 7 is located inside the spring 2, the piston 6 connected to the cover 1 through the piston rod 5 is arranged inside the outer cylinder 7, the opening of the outer cylinder 7 and the piston rod 5 are sealed by a sealing ring 3 ; The interior of the outer cylinder 7 is filled with silicone oil 4 .

[0029] Wherein, the diameter of the piston 6 is equal to the inner diameter of the outer cylinder 7, and a through hole is provided on the piston 6 to ensure that the silicone oil 4 can flow when the piston 6 moves axially.

[0030] Among them, the cover 1 is connected with the spacer on the wire by bolts to ensure that the device can move up and do...

Embodiment 2

[0032] The cover 1 is connected to the base 8 through the spring 2. The spring 2 provides a certain rigidity, which can not only meet the requirement of the initial displacement under the static load, but also ensure that the piston 6 can return to the initial position after each vibration; There is an outer cylinder 7, the outer cylinder 7 is located inside the spring 2, the piston 6 connected to the cover 1 through the piston rod 5 is arranged inside the outer cylinder 7, the opening of the outer cylinder 7 and the piston rod 5 are sealed by a sealing ring 3 ; The interior of the outer cylinder 7 is filled with silicone oil 4 .

[0033] Wherein, the diameter of the piston 6 is smaller than the inner diameter of the outer cylinder 7 , and when the piston 6 moves axially, the silicone oil 4 flows through the gap between the piston 6 and the outer cylinder 7 .

[0034] Among them, the cover 1 is connected with the spacer on the wire by bolts to ensure that the device can move u...

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Abstract

The invention provides a semi-solid single-point waving prevention device which comprises a cover, a piston and a base, wherein the cover, the piston and the base are sequentially arranged on the same axis in parallel. The semi-solid single-point waving prevention device is characterized in that an outer barrel is arranged on the base, the piston located in the outer barrel is connected with the cover through a piston rod, a spring is arranged between the cover and the base and located on the outer side of the outer barrel, and silicon oil is arranged in the outer barrel. Compared with the prior art, the semi-solid single-point waving prevention device is good in waving prevention performance, can effectively restrain waving of an electric transmission line under ice wind shock excitation, is simple in structure and easy to mount, can be matched with a sub conductor spacer, and is good in economic performance and suitable for large-scale popularization and use.

Description

technical field [0001] The invention relates to an anti-dance device, in particular to a semi-solid single-point anti-dance device for power transmission lines. Background technique [0002] In recent years, with the continuous acceleration of China's electric power development, China's power grid has also developed rapidly. The operating voltage level of the power grid system has continued to increase, and the network scale has also continued to expand. A unified strong smart grid will be built, and the goal of building a world-class power grid will be preliminarily realized. [0003] As an important part of the power system, the transmission line is responsible for the transmission of electric energy, and at the same time it is the link most prone to failure in the power system. A low-frequency, large-amplitude self-excited vibration generated by the eccentric ice-coated conductor under wind excitation when the transmission line is galloping. The vibration frequency is us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/14
Inventor 孙娜朱宽军刘彬徐赵东许凌志
Owner STATE GRID CORP OF CHINA
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