城镇燃气埋地钢质管道杂散电流测试方法

20102PipelineTechniqueandEquipment2010No12:(07-10-50-01):2009-05-04:2010-02-26王新华1,刘菊银1,何仁洋2,陈振华1(1.,100124;2.,100013):目前,对轨道交通动态杂散电流干扰原理的研究开展的很多,但是,如何判断干扰电流对在役埋地燃气管道的危害程度,至今国内外还没有非常有效的手段因此,比较了几种测试方法的适应性,提出了管地电位波动监测与SCM杂散电流检测仪相结合的检测方法,为埋地燃气钢质管道周围环境的杂散电流干扰测试与评价提供了新的依据:杂散电流;轨道交通;管地电位;测试方法:TE988:A:1004-9614(2010)02-0045-04DetectionMethodofStrayCurrenttoUrbanBuriedGasPipelinesWANGXin-hua1,LIUJu-yin1,HERen-yang2,CHENZhen-hua1(1.CollegeofMechanicalEngineeringandAppliedElectronicsTechnology,BeijingUniversityofTechnology,Beijing100124,China;2.PressurePipeDepartment,ChinaDetectingResearchCenterofSpecialEquipments,Beijing100013,China)Abstract:Uptonow,theinterferenceprincipleofrailtrafficstraycurrenthasbeenresearchedclearly,butaveryeffectivemethodhasnotbeenfoundtojudgethedegreeofdamagebytheinterferencecurrent.Therefore,severalmethodsarecomparedandasyntheticmethod)thepipe-to-soilpotentialsequentialfluctuationmonitoringandstraycurrentdetectionbyusingSCMisbroughtforward,whichprovidesnewevidencetoburiedgaspipelinestraycurrentdetectionandevaluation.Keywords:straycurrent;tracktraffic;pipe-to-soilpotentia;ldetectionmethod0,[1],,,,,,,,[2]1SCM1.1,,,;,,,,,,1,,,1,[3],:;1,20,;46PipelineTechniqueandEquipmentMar12010,,11.22,,[4-5],SY/T0017-2006,\20mV,;\100mV,[6]BSEN50162-2004,()()20mV,[7],,,,,,,BSEN50162-2004,,1.3,,,2,DATA-LOGGER,,,;,,,,,,,1.43,BSEN50162-2004,,,,[7]BSEN50162-2004,4:(1)(),,100%,,4/A03,40%(2)24h,(3)(4/B0,,50%)(4)14第2期王新华等:城镇燃气埋地钢质管道杂散电流测试方法471/%/%/s/%/%/s7030272704014402013660207201001518501036000113164051802,,:;:,,,,:2,,40%70%,;,1440s,70%,10,,,,,24h,,,1.55,abcd4,100m,,64,,VabVcd,,()(),[6]SY/T0017-2006(2),015mV/m,;215mV/m,[6]2/(mV#m-1)015015~510510,,,,,,1.6SCM()SCM,SCM(GPS)SCM,,SCM48PipelineTechniqueandEquipmentMar12010,,;48h[8],SCM,,[9],SCMSCMViewLog,A.,SCM2,,:2.1,,,,,50mV,,30min.7DATA-LOGGER,3s1-1764~-1445mV,319mV,72.2SCM,,2~4,,8SCM,,(),,,,8SCM3,,,,,SCM,,:[1].:[].:,2007:1-4.[2],,,..,2007,27(5):57.[3]SY/T0029)98.[4]MARTINB.StrayCurrentCorrosion-RealCorrosion.Corro-sion,2001,7(2):6-8.[5]BEGGSJ.StrayCurrentTestingonGasDistributionPipe-lineFollowingStart-UpofaNewLightRailTransitLine.Corrosion,2005,05248:4-11.[6]SY/T0017)2006.[7]EN50162)2004ProtectionAgainstCorrosionbyStrayCurrentfromDirectCurrentSystems.[8]StrayCurrentMapper-UserManua.lRadiodetection,Ltd,2002.[9],..,2003(4):31-39.:(1969)),,