Failure Analysis and Improvement on Driving Mechanism of Disconnector

LIU Weijie; ZHAO Junliang

doi:10.13296/j.1001-1609.hva.2024.08.032

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Failure Analysis and Improvement on Driving Mechanism of Disconnector

Technical Discussion | 更新时间：2025-04-26

- Failure Analysis and Improvement on Driving Mechanism of Disconnector
- High Voltage Apparatus Vol. 60, Issue 8, Pages: 269-274(2024)
- 作者机构：
  
  西安西电高压开关操动机构有限责任公司，西安　 710077
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2024.08.032
  CLC：
- Received：11 February 2024，
  
  Revised：19 April 2024，
  
  Published：16 August 2024
- 稿件说明：
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LIU Weijie, ZHAO Junliang. Failure Analysis and Improvement on Driving Mechanism of Disconnector[J]. High voltage apparatus, 2024, 60(8): 269-274.
DOI：

LIU Weijie, ZHAO Junliang. Failure Analysis and Improvement on Driving Mechanism of Disconnector[J]. High voltage apparatus, 2024, 60(8): 269-274. DOI： 10.13296/j.1001-1609.hva.2024.08.032.

摘要

结合一起某电网变电站工程用252 kV GIS隔离开关传动机构锥齿轮和锥齿轮轴部位的传动键被剪断造成的传动失效故障，此故障部位所用的平键为GB1096A型4×4×10键。为了深入分析原因，将现场发生故障返厂传动机构的锥齿轮、传动轴和断裂的平键在厂内进行了材质、硬度的检查。并从设计、装配方面进行分析，找出了引发故障的原因，制定了相应的解决措施，消除了此类问题存在的安全隐患，为后续此产品的生产、提高电网可靠运行、减少电网投运事故率奠定了基础。

Abstract

In view of the driving failure due to the cutting of driving key of the bevel gear and bevel gear shaft of the driving mechanism for 252 kV GIS disconnector in a power grid substation project

the flat key used in this fault position is GB1096A type 4×4×10 key. In order to analyze the cause further

the faulty level gear

driving shaft and the broken flat key are returned to the factory from site and are subject to materials and hardness inspection. The cause of the failure is found from the aspects of design and assembly analysis

the corresponding solution measures are formulated

the safety risks of such problems are eliminated

which lay a foundation for the subsequent production of this product

improve reliable operation of the power grid and reduce the operation accident rate of power grid.

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