油气输送管道电磁在线检测技术

:2001211203:(1949-),,,,.252()Vol.25No.220024JOURNALOFHEFEIUNIVERSITYOFTECHNOLOGYApr.20021,1,1,1,2(1.,230009;2.,234100):,,,RAMTape,,,8,:;;;;:TP391.4:A:100325060(2002)0220218204NondestructivetestingtechnologyandsystemofoilorgastransportationpipelinesbasedontheelectromagneticinspectionHEFu2yun1,WANGXiao2mang1,ZHANGYong1,HEJian1,WUGuo2zheng2(1.SchoolofComputerScienceandInformationEngineering,HefeiUniversityofTechnology,Hefei230009,China;2.SuzhouArchitec2tureProspectingandDesigningInstitute,Suzhou234100,China)Abstract:PipeClimberisadeviceusedtodetectthedefectsofpipelinesinhigh2speedbasedonthetheoryofelectromagneticinspection.Thedeviceisespeciallysuitablefordetectingundergroundoilorgastransportationpipelines.Thesignalsittestedcanbeamplified,thenoiseremoved,andthedatacompressed,encodedandsavedinRAMorTape.AfterPipeClimbercomesoutofpipelines,thedataisfedtoananalyticsystemfirstlyanddecodedtoresumetestinggraphsecondly,andlastly,thesys2temcouldfindflaws’directionanddegreeandmakesureoftheiraccuratelocationsonthepipelines.Theseflawsaredividedintoeightpartsaroundthepipeline’scircumference.Researchesindicatethatthepresentednondestructivetestingsystemhasthecharacteristicsofdetectingrapidlyandtestingev2eryareawithoutanyomission.Keywords:oilorgastransportationpipeline;electromagneticinspectiononline;datacompression;decoder;PipeClimber,,,,,,,,©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[1]Hg=2.65Hoö[1-N(1-LgöLf)](1)LgLfN,N=Tö(T+S)TSHoTS,HgN(0N1),Hg,,,,,,,[2]2,11.2.3.4.5.6.7.8.9.12.112,,,,48,360,,2.28,20,,,,,2.3(1),,0.05MPa,280N,4060mömin(2),0.1MPa,550N,33.148,9122,:©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[3]22,,,;;;,2315368,05313.228,,40kHz,8,,,8,3.3,3608,,[4],333,0,,,,,0,;0,,,,1,,RAMTape(),TapeL,R[5]4,RAMTaye,DöA022()25©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[6],,44.3(1):1002000mm(2):5%(3):60mömin(4):(5):20km(6):45,,5,,,,,,[][1].NDT[J].(),1994,17(3):28-33.[2],[J].,2000,(3):73-77.[3].(2)[M].:,1985.47-59.[4],.[J].(),1998,21(5):28-31.[5].[J].,1999,(1):73-77.[6].[M].:,1987.467-514.()1222,:©1994-2006ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.