利用继电器控制系统实现简单的安全联锁功能  

Using relay control system to realize simple safety interlock function

作　　者：田雪冰 TIAN Xuebing(China Kunlun Engineering Co.,Ltd.Liaoyang Branch,Liaoyang,Liaoning 111003,China)

机构地区：[1]中国昆仑工程有限公司辽阳分公司,辽宁辽阳111003

出　　处：《自动化与仪器仪表》2023年第S1期65-68,共4页Automation & Instrumentation

摘　　要：随着企业对安全生产的要求越来越高,已运行多年的老旧控制系统中,部分安全仪表功能(SIF)回路已经无法满足安全完整性等级(SIL)要求,在升级改造过程中有可能出现I/O点数较少、预算不足、控制室空间不够等因素,导致无法新增以可编程控制器为逻辑控制器的安全仪表系统(SIS)。针对以上工况,以某实际项目为例,对如何利用继电器控制系统实现满足SIL等级的安全联锁控制回路提供一个设计思路。with the increasing requirements of enterprises for safety production,some safety instrumented function(SIF)loops in the old control system that has been operated for many years can not meet the requirements of safety in⁃tegrity level(SIL).During the upgrading and transformation process,there may be fewer I/O points,insufficient budget,insufficient space in the control room and other factors,resulting in the inability to add a safety instrumented system(SIS)with programmable logic controller.According to the above working conditions,taking a practical project as an example,this paper provides a design idea on how to use relay control system to realize safety interlock control loop meeting SIL level.

关 键 词：继电器控制系统 安全联锁系统 SIL 

分 类 号：TP206[自动化与计算机技术—检测技术与自动化装置]