安全栅故障原因分析及应对措施

Failure cause analysis of safety grid and countermeasures

安全栅是化工自动化生产中本质安全回路的重要环节,安全栅接在本质安全电路和非本质安全电路之间,将供给本质安全电路的电压、电流限制在安全范围内的装置。安全栅故障将导致整个回路甚至更大范围内的故障,通过对某石化公司故障安全栅的分析找到了造成安全栅故障的原因,并提出切实可行的应对措施。

Safety grid is an important link of intrinsic safety circuit in chemical automation production.Safety grid,connecting between intrinsic safety circuit and immaterial safety circuit,is a device that limits the voltage and current supplied to intrinsic safety circuit within the safety range.The failure of safety grid will lead to the failure of the whole circuit or even a larger scope.This paper analyzed and found out the cause of failure safety grid and proposed the feasible countermeasures.