LNG槽车装车安全仪表系统设计与研究
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摘要
为了解决国内LNG接收站槽车装车系统在运行安全方面存在的问题,从提高安全仪表系统设置的可靠性、安全性和有效性角度进行分析和研究,结合已运行良好的接收站所积累的工程设计和运行经验,基于过程工业安全保护防灾结构体系的各个保护层分析了装车控制系统、紧急关断系统、火灾和可燃气体检测报警系统的组成结构和选型,设计了装车控制系统和安全保护系统的联锁因果关系表,建立起各控制系统和安全系统之间的联系。实际运行结果表明:该设计方案对保证槽车装车区域的安全运行和联锁保护是行之有效的。
With a view to ensuring security of truck loading at domestic LNG receiving stations,analyzing and research of improving reliability,safety and effectiveness of the safety instrument system of the truck loading were implemented,including having experiences accumulated in the engineering design and practical running of well-run LNG receiving stations combined,and the process industrial safety protection and disaster prevention structural system's each protective layer based to analyze architecture of the truck loading control system,the emergency shut-down system and the fire and gas detection and alarm system and select their types and to design their interlocking logic so as to establish relations among them. The practical application shows that,the safety instrument system scheme designed is effective to improve the security the LNG truck loading area.
With a view to ensuring security of truck loading at domestic LNG receiving stations,analyzing and research of improving reliability,safety and effectiveness of the safety instrument system of the truck loading were implemented,including having experiences accumulated in the engineering design and practical running of well-run LNG receiving stations combined,and the process industrial safety protection and disaster prevention structural system's each protective layer based to analyze architecture of the truck loading control system,the emergency shut-down system and the fire and gas detection and alarm system and select their types and to design their interlocking logic so as to establish relations among them. The practical application shows that,the safety instrument system scheme designed is effective to improve the security the LNG truck loading area.
引文
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[3] 曲顺利,贾宝印,赵彩云,等.LNG接收站的安全分析与措施[J].煤气与热力,2011,31(10):B4～B7.
[4] 胡奥林,王小明.天然气供应安全及其应对策略[J].天然气工业,2008,28(10):125～129.
[5] 宋坤,衣鹏,胡贤文.LNG槽车装车橇应用和国产化进程[J].天然气与石油,2013,31(3):5～9.
[6] 马晓茜,廖艳芳. 液化天然气储运与利用中的几个关键问题[J].石油与天然气化工,2005,34(5):363～367.
[7] IEC 61511-2016,Functional Safety-Safety Instrumented Systems for the Process Industry Sector[S]. Geneva: IEC, 2016.
[8] 贺耿,王新良,张德均,等. LNG槽车装车控制系统设计[J].天然气与石油,2013,31(3):66～70.
[9] 牛军锋.LNG槽车灌装站控制系统[J].化工自动化及仪表,2013,40(4):549～551.
[10] 贺耿,王正,包光磊. LNG槽车装车系统的技术特点[J].天然气与石油,2012,30(4):11～14.