关于长输天然气管道受地铁动态直流杂散电流干扰的思考与探讨
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摘要
随着国民经济快速发展,长输天然气管道途经城市建设投运地铁的情况日益增加,地铁和埋地管道平行或交叉的相关情况越来越多,地铁杂散电流对管道造成的干扰影响日趋严重,越来越被天然气长输管道运营单位所关注。本文对地铁杂散电流干扰规律进行了分析,梳理了目前已有国内外与地铁杂散电流干扰相关的评价标准和检测方法的局限性,统计了国内各个城市地铁杂散电流对管道干扰的现状,分析了地铁杂散电流干扰对埋地管道造成的危害,提出了解决问题途径与要求。
With the rapid development of national economy, the situation of long-distance natural gas pipelines intersecting or paralleling with urban subway systems becomes more common. The stray current generated by the subway systems has caused more and more severe interference issues to the pipelines,driving more and more attentions paid by pipeline operators. In this paper, the regularity of stray current interference of the subway systems was analyzed, and meanwhile, the implementing evaluation criteria and the present detection methods related to such stray current interferences were summarized through comparative studies, as well as their limitations. The present situations of stray current interference on pipelines in various cities in China were gathered, and the harm of stray current interferences to the underground pipelines was analyzed. Based on these analyses, the solutions and requirements to the interference issues were put forward.
With the rapid development of national economy, the situation of long-distance natural gas pipelines intersecting or paralleling with urban subway systems becomes more common. The stray current generated by the subway systems has caused more and more severe interference issues to the pipelines,driving more and more attentions paid by pipeline operators. In this paper, the regularity of stray current interference of the subway systems was analyzed, and meanwhile, the implementing evaluation criteria and the present detection methods related to such stray current interferences were summarized through comparative studies, as well as their limitations. The present situations of stray current interference on pipelines in various cities in China were gathered, and the harm of stray current interferences to the underground pipelines was analyzed. Based on these analyses, the solutions and requirements to the interference issues were put forward.
引文
[1]计雪松,秦朝葵.杂散电流对埋地燃气管道的腐蚀及其监测[J].上海煤气,2007(4):12-15.
[2]刘文权.城市地铁杂散电流对埋地输油管道的危害[J].全面腐蚀控制,2014,28(11):29-32.
[3]颜达峰,刘乃勇,袁鹏斌等.地铁维修基地杂散电流对埋地钢质管道的腐蚀及防护措施[J].腐蚀与防护,2013,34(8):739-742.
[4]高玉珍.轨交杂散电流对天然气主干网的腐蚀影响及防护探究[J].上海煤气,2016(2):6-11.
[5]徐颢,李代莉.轨道交通直流杂散电流给埋地钢管防腐系统带来的新风险[J].城市燃气,2016(3):12-17.
[6]吴祥祖,张庆贺,高卫平.地铁杂散电流产生机理及其防护措施[J].建筑安全,2003(5):28-30.
[7]ZAKOWSKI K,DAROWICKI K,ORLIKOWSKI J,et al.Electrolytic corrosion of water pipeline system in the remote distance from stray currents-case study[J].Case Studies in Construction Materials,2016,4:116-124.
[8]陈耀,严显智,阮建平等.油气管道地铁杂散电流直接排流技术应用[J].石油化工腐蚀与防护,2017,34(4):45-47.
[9]埋地钢质管道直流干扰防护技术标准:GB50991-2014[S].北京:中国标准出版社,2014.
[10]Cathodic protection of metals-pipes and cables:AS 2832.1-2015[S].Sydney:Standards Australia International,2015.
[11]Protection against corrosion by stray current from direct current systems:BS EN 50162-2004[S].[S.l.]:BSI,2004.
[2]刘文权.城市地铁杂散电流对埋地输油管道的危害[J].全面腐蚀控制,2014,28(11):29-32.
[3]颜达峰,刘乃勇,袁鹏斌等.地铁维修基地杂散电流对埋地钢质管道的腐蚀及防护措施[J].腐蚀与防护,2013,34(8):739-742.
[4]高玉珍.轨交杂散电流对天然气主干网的腐蚀影响及防护探究[J].上海煤气,2016(2):6-11.
[5]徐颢,李代莉.轨道交通直流杂散电流给埋地钢管防腐系统带来的新风险[J].城市燃气,2016(3):12-17.
[6]吴祥祖,张庆贺,高卫平.地铁杂散电流产生机理及其防护措施[J].建筑安全,2003(5):28-30.
[7]ZAKOWSKI K,DAROWICKI K,ORLIKOWSKI J,et al.Electrolytic corrosion of water pipeline system in the remote distance from stray currents-case study[J].Case Studies in Construction Materials,2016,4:116-124.
[8]陈耀,严显智,阮建平等.油气管道地铁杂散电流直接排流技术应用[J].石油化工腐蚀与防护,2017,34(4):45-47.
[9]埋地钢质管道直流干扰防护技术标准:GB50991-2014[S].北京:中国标准出版社,2014.
[10]Cathodic protection of metals-pipes and cables:AS 2832.1-2015[S].Sydney:Standards Australia International,2015.
[11]Protection against corrosion by stray current from direct current systems:BS EN 50162-2004[S].[S.l.]:BSI,2004.