天然气输送联动联锁安全控制研究应用
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摘要
天然气从生产到外输采用管道输送,管道沿途环境地形复杂、部分区域人烟密集,存在很多安全隐患。发生管道破损等情况时,管道阀室的开关执行状态关系到整个事故的有效控制。为此,提高天然气集输系统联动联锁安全控制水平,可有效提高突发事件的应急安全管控能力。文章在井、站、管道运行控制运行现状基础上,分析对管道沿途阀门、管道上下游集输站点以及管道所涉及的生产区域进行联动联锁控制必要性,并结合分散在集输过程各个区域控制器的特性,进行系统集中优化,完善控制原理,达到了联动联锁安全应急控制目标,并在实践中得到有效应用,提高了天然气安全集输水平。
Natural gas is transported by pipeline from production to external transportation.The environmental terrain along the pipeline is complex and some areas are densely populated,with potential safety hazards.The actuation state of the valve chamber is highly related to the effective control of the whole accident in case of pipeline breakage.Therefore,improving the safety control level of natural gas collection and transmission system linkage interlock can effectively improve the emergency security control ability.Based on the current operation status of well,station and pipeline operation control,the necessity of interlocking the valves along the pipeline,the upstream and downstream assembly stations and the production areas were analyzed.Combined with the characteristics of controllers scattered in each area of the assembly process,the system was optimized collectively,and the control protocols was optimized,too.As a result,linkage interlock was achieved for safety emergency control,and was effectively applied in practice,which significantly improved the level of natural gas safety collection and transmission.
Natural gas is transported by pipeline from production to external transportation.The environmental terrain along the pipeline is complex and some areas are densely populated,with potential safety hazards.The actuation state of the valve chamber is highly related to the effective control of the whole accident in case of pipeline breakage.Therefore,improving the safety control level of natural gas collection and transmission system linkage interlock can effectively improve the emergency security control ability.Based on the current operation status of well,station and pipeline operation control,the necessity of interlocking the valves along the pipeline,the upstream and downstream assembly stations and the production areas were analyzed.Combined with the characteristics of controllers scattered in each area of the assembly process,the system was optimized collectively,and the control protocols was optimized,too.As a result,linkage interlock was achieved for safety emergency control,and was effectively applied in practice,which significantly improved the level of natural gas safety collection and transmission.
引文
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[2]顾建荣.陆上油气管道急剧危害定量风险评价研究[D].西安:西安建筑科技大学,2016:1-77.
[3]博燃网.2018年7月国内燃气事故统计与数据分析[EB/OL].(2018-08-02)[2019-02-12].http://m.sohu.com/a/244898675_360037/.
[4]田英帅,杨光,刘传庆.城镇燃气管道安全风险分级管控研究[J].煤气与热力,2018,38(11):48-52.
[5]田华艳.基于Modbus RTU协议实现DCS系统主站通讯与从站通讯[J].自动化与仪器仪表,2016(7):48-49.
[6]杨永斌,常存良.BB PLC在天然气站场的应用[J].中国科技投资,2012(27):45.