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Gap adjusting mechanism for 500-kV pure air gap surge arrester

A technology of gap adjustment mechanism and arrester, which is applied in the field of arrester, can solve the problems of complicated installation and difficult adjustment of gap distance of pure air gap arrester, and achieve the effect of easy-to-use reliability, convenient installation and reasonable structure

Active Publication Date: 2014-01-15
STATE GRID CORP OF CHINA +1
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  • Summary
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Problems solved by technology

[0003] In order to solve the problems of relatively complicated installation of pure air gap arrester and difficult adjustment of gap distance, the present invention provides a gap adjustment mechanism of 500kV pure air gap arrester

Method used

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  • Gap adjusting mechanism for 500-kV pure air gap surge arrester
  • Gap adjusting mechanism for 500-kV pure air gap surge arrester
  • Gap adjusting mechanism for 500-kV pure air gap surge arrester

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Embodiment Construction

[0011] 500kV pure air gap lightning arrester gap adjustment mechanism, including a lightning arrester fixed upper splint 1 and several lightning arrester fixed lower splints 2 fixed on the cross arm 14 of the tower, the left end of the lightning arrester fixed upper splint 1 is provided with a discharge counter 6, and the lightning arrester fixed upper splint 1 left end There is a cantilever 8 protruding outward, the main body of the arrester 3 is hung under the cantilever 8, the upper electrode 4 of the discharge gap is fixed under the main body of the arrester 3, and several C-shaped adjustment blocks 7 are arranged between the main body of the arrester 3 and the upper electrode 4 of the discharge gap. A gap rod 10 is fixed on the wire 12 below the upper electrode 4 of the discharge gap, and a lower electrode 5 of the discharge gap is fixed on the gap rod 10. The lower electrode 5 of the discharge gap includes a lower electrode support plate 9 supported on the gap rod 10, and ...

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Abstract

The invention particularly relates to a gap adjusting mechanism for a 500-kV pure air gap surge arrester, which solves the problem that the pure air gap surge arrester is relatively difficult to mount, and a gap distance is difficult to adjust. A distance between a top electrode and a bottom electrode of a discharging gap can be intermittently or continuously adjusted through the gap adjusting mechanism which comprises a coarse adjusting part and a fine adjusting part. The gap adjusting mechanism provided by the invention has the advantages of reasonable structure, convenience in installation, easiness in utilization and high reliability.

Description

technical field [0001] The invention relates to the field of lightning arresters, in particular to a gap adjustment mechanism for a 500kV pure air gap lightning arrester. Background technique [0002] Since the 500kV transmission lines at home and abroad in the 1990s, lightning arresters have been used as lightning protection devices, and good results have been achieved. Usually conductor (12) is to utilize line insulator (13) to hang below pole tower cross arm (14). There are two structural forms of the arrester: one is the insulator support gap type; the other is the pure air gap type. Both types of surge arresters have their own advantages and disadvantages. In terms of its electrical performance, operational stability and operational detection, the pure air gap arrester is far superior to the composite insulator support gap type. Since any abnormal fault arrester will not affect the safe operation of the system, pure air gap type is widely used abroad. There is no co...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01T4/10
Inventor 郑宇清高志伟杨杰刘彦芳戴建国刁嘉王万才
Owner STATE GRID CORP OF CHINA
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