轨道交通动态杂散电流对埋地管道的干扰腐蚀试验
Disturbed Corrosion of Buried Gas Pipe-lines Induced by Rail Traffic Dynamic Stray Current
摘 要
轨道交通动态杂散电流是造成城镇埋地燃气钢质管道腐蚀泄漏的主要原因.由于现场环境的复杂多变,目前对动态杂散电流干扰腐蚀的研究尚未深入,动态杂散电流危害评估主要建立在经验判断的基础上.本工作在实验室搭建动态杂散电流加速腐蚀试验平台,研究了杂散电流的时变规律以及管地电位变化特征,同时也研究了动态杂散电流干扰环境下土壤酸碱度、土壤电导率、杂散电流频率以及杂散电流密度对管道腐蚀速率的影响,利用回归分析方法建立了腐蚀速率计算的数学模型,确立各影响因素对腐蚀速率的贡献率,并验证了模型的可靠性,为现场埋地钢质管道腐蚀危害性评价提供了一定的依据.
腐蚀速率
回归分析
危害评估
dynamic stray current
corrosion rate
regression analysis
hazard evaluation
Abstract
Most of the buried gas pipe-line corrosion is induced by the dynamic stray current leaking from the rail traffic.Due to the complexity and variability of the field environments,in-depth study on dynamic stray current disturbance and corrosion is scare,the hazard judgment of dynamic stray current is mainly set up on the basis of working experience.A stray-current accelerated corrosion test platform was set up to investigate the time-varying patterns of stray current and the changing characters of pipe-to-soil potential.The effects of soil pH,soil conductivity,stray current frequency and density on corrosion rate were also investigated.A math model was built to establish the factors′ contribution rate to pipeline corrosion and the reliability of the model was verified,which provides theoretical evidence for the judgment of buried gas pipelines' corrosion hazard.
中图分类号 TG174.3
所属栏目 试验研究
基金项目 国家质检总局质检公益性行业科研专项项目(07-10-50-01)
收稿日期 2009/4/4
修改稿日期 2009/6/10
网络出版日期
作者单位点击查看
备注王新华,教授.
引用该论文: WANG Xin-hua,LIU Ju-yin,HE Ren-yang,CHEN Zhen-hua. Disturbed Corrosion of Buried Gas Pipe-lines Induced by Rail Traffic Dynamic Stray Current[J]. Corrosion & Protection, 2010, 31(3): 193～197
被引情况:
【1】陈飞,周吉祥,牟南翔, "埋地管道直流杂散电流排除实践",腐蚀与防护 34, 171-173(2013)
【2】颜达峰,刘乃勇,袁鹏斌,舒江,李月娥, "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",腐蚀与防护 34, 739-742(2013)
【3】杨燕,李自力,文闯, "杂散电流对X70钢干扰影响的腐蚀试验",腐蚀与防护 34, 391-394(2013)
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参考文献
【1】周伟.直流牵引供电系统杂散电流分布与防护研究[D].成都:西南交通大学,2007.
【2】Zakowski K K,Sokolski W.24-hour characteristic of interaction on pipelines of stray currents leaking from tram tractions[J].Corrosion Science,1999,41(11):2103-2108.
【3】Luca Ardizzon,Paolo Pinato,Dario Zaninelli.Electric traction and electrolytic corrosion: a software tool for stray current calculation［C］//2003 IEEE PES Transmission and Distribution Conference and Exposition,Dallas TX USA:2003:550-551.
【4】Levin S I,Kharionovsky V V.Causes and frequency of failures on gas mains in the USSR PIPE [J].Pipes & Pipelines International,1993,38(4):7-8.
【5】Ian Cotton,Pete Aylott,Petra Ernst.Stray current control in DC mass transit systems[J].IEEE Rransaction on Vehicular Technology March,2005,54(2):722.
【6】SYJ4020-1988.埋地钢质管道石油沥青防腐层施工及验收规范[S].
【7】秦国治,丁良棉,田志明.管道防腐蚀技术[M].北京:化学工业出版社,2004.
【8】Darowicki K,Krakowiak S,Slepski P.Evaluation of pitting corrosion by means of dynamic electrochemical impedance spectroscopy[J].Electrochimica,2004,49(17):2909-2918.
【9】GB/T19285-2003,埋地钢质管道腐蚀防护工程检验[S].
【10】何晓群,刘文卿.应用回归分析[M].北京:中国人民大学出版社,2001.
【2】Zakowski K K,Sokolski W.24-hour characteristic of interaction on pipelines of stray currents leaking from tram tractions[J].Corrosion Science,1999,41(11):2103-2108.
【3】Luca Ardizzon,Paolo Pinato,Dario Zaninelli.Electric traction and electrolytic corrosion: a software tool for stray current calculation［C］//2003 IEEE PES Transmission and Distribution Conference and Exposition,Dallas TX USA:2003:550-551.
【4】Levin S I,Kharionovsky V V.Causes and frequency of failures on gas mains in the USSR PIPE [J].Pipes & Pipelines International,1993,38(4):7-8.
【5】Ian Cotton,Pete Aylott,Petra Ernst.Stray current control in DC mass transit systems[J].IEEE Rransaction on Vehicular Technology March,2005,54(2):722.
【6】SYJ4020-1988.埋地钢质管道石油沥青防腐层施工及验收规范[S].
【7】秦国治,丁良棉,田志明.管道防腐蚀技术[M].北京:化学工业出版社,2004.
【8】Darowicki K,Krakowiak S,Slepski P.Evaluation of pitting corrosion by means of dynamic electrochemical impedance spectroscopy[J].Electrochimica,2004,49(17):2909-2918.
【9】GB/T19285-2003,埋地钢质管道腐蚀防护工程检验[S].
【10】何晓群,刘文卿.应用回归分析[M].北京:中国人民大学出版社,2001.
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