地下油气输送管道漏磁高速在线检测技术及装置

,,(,230009):,,,RAM,RAM,:;;;:TG115.28:A:100026656(2002)1020425203HIGH2SPEEDMAGNETICFLUXLEAKAGENONDESTRUCTIVETESTINGTECHNOLOGYANDSYSTEMFORUNDERGROUNDOILORGASTRANSPORTATIONPIPELINESHEFu2yun,WANGBao,HEJian(SchoolofComputerandInformation,HefeiUniversityofTechnology,Hefei230009,China)Abstract:Basedonthetheoryofmagneticfluxleakagetesting,adevicewasdesignedforon2linehigh2speedinspec2tionofundergroundoilorgastransportationpipelineswithoutanyomission.Signalswereamplified,noise2reduced,com2pressedandstoredupinRAMortape.Afterthedevicegettingoutofthepipeline,thedataweredecodedtoformtestinggraphandthedefectscouldbeaccuratelylocatedandidentified.Keywords:Magneticfluxleakagetesting;Pipeline;Dataprocessing;Defect,,,,,,,RAM;,RAM,,:20012102121,,,Hg,,;,,,[1],5242410200210NDTVol.24No.10Oct.2002©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2112.1,,,360,,2.2,20,,,,2.3,,0.05MPa,28kg,4060m/min2.4,0.1MPa,55kg,2.5,,,33.1,,60dB,12V,2,,;;;;2,315360,04523.22A1A8,,40kHz,,,,3.3,360,[2]33A1A8624:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3,f0D1D8,,,,,,,0,,0,,,,,RAM,4,RAMD/A4.1RAM,,RAM;,,,,4.24[3],,,,,4;,,,,55.1ISO9598,GB/T12061998YB40835.2100500mm,5,4060m/min,20km,45,6,,,,:[1].[J].,1994,17(3):28-33.[2].[J].,2000,14(3):73-77.[3].[M].:,2000.32-38.724:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.