核电站DCS机柜门锁传动机构接地问题的研究  

Research on Grounding Problems of Door Lock Mechanisms of DCS Cabinets in Nuclear Power Plants

作　　者：张伟[1] 

机构地区：[1]北京广利核系统工程有限公司

出　　处：《自动化博览》2023年第10期72-75,共4页Automation Panorama1

摘　　要：针对DCS机柜门锁系统在机械接地连续性测试过程中发现接地导通不可靠的问题,本文对门锁传动机构进行了研究,发现传动机构外壳与转轴及锁杆之间存在缝隙,导致二者接触不可靠,因此使得接地导通电阻不符合标准要求。本研究通过在传动机构与转轴之间安装导通弹簧,在传动机构外壳与锁杆之间安装导通弹簧片,使得二者可靠接触且满足导通电阻小于0.1Ω的要求。In response to the issue of unreliable grounding continuity discovered during the mechanical grounding test of the DCS cabinet door lock system,this paper conducts a study on the gearing mechanism of the door lock system.Because there are gaps between the gearing mechanism's shell and the shaft and bolts,the grounding resistance is too high to meet the standard requirements.This research addresses the problem by installing conductive springs between the shell and the shaft and a spring piece between the shell and the bolts,which can ensure reliable contact between them and meet the requirement of grounding resistance less than 0.1Ω.

关 键 词：机柜 门锁系统 传动机构 接地 

分 类 号：TM623[电气工程—电力系统及自动化]