汽轮机转子中心孔超声成像检测方法研究

(,100044)(,100045):HLBE21,CB,:;;;:TG115.28+5:A:100026656(2002)0420151203RESEARCHONULTRASONICIMAGINGINSPECTIONOFTHECENTERBORESOFTURBINEROTORSTENGYong2ping(NorthernJiaotongUniversity,Beijing100044,China)ZHANGZhi2yong(NorthChinaElectricPowerResearchInstitute,Beijing100045,China)Abstract:Thesamplingandprocessingofultrasonicsignals,andthedisplayandanalysisofimagesrealizedbyHLBE21ultrasonicandeddycurrentimagingsystemaredescribed.Combinedwithconventionaltestingtechniqueandcri2terion,thesystemhasthefunctionsofreal2timemonitoring,signalstore,multi2redisplayofimagesandflawanalysisforA,BandCscan.Fieldapplicationsshowthattheultrasonicimagingtechniqueforcenterboresofturbinerotorshastheadvantagesofhighspeedandreliability.Keywords:Ultrasonicinspection;Turbinerotor;Imaging;Signalprocessing,,,,,,;,,(60220mm),(510m),,RD2080:2001202213ZZC21[1],,,,()HLBE211HLBE21(1),15124420024NDTVol.24No.4Apr.2002©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.14545,,60220mm,DOSWIN98,1.1AA(2),,,2,,,,,C+AC+B21.2,C[2]BP[3],ALOK[4]SAFT[5]HLBE21(3)3(1)CC,(2)B,B,,(3)MAAMA,,(4)TOFTOF(),C,,CB,B,22.1,,,;,C,,,,CA,B,;,TOF,BMA251:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2.2,CB,,,C,,,2.3,,,10m200mm,1,2mm,1mm,343MB[6],,,2.4,,1mm,A,,A37m108mm,95mm120,6,43mm,25,2015mmCB4,42mm,4HLBE21,,,,:[1]ZhangZhiyong,ChenBingzhong.DevelopmentofZZC2lultrasonictestingsystemforcenterboresofturbinerotors[J].Electricity2CSEE,1992,2(3):21-24.[2],,.[J].,1995,17(11):311-314.[3],,.P[J].,1996,18(12):333-335.[4]BarbianOA,etal.EvaluationoftimeofflightdatawiththeALOKmethod[J].BritishJournalofNDT,1984,26:214-217.[5]DoctorSR,etal.SAFTtheevolutionofasignalprocessingtechnologyforultrasonictesting[J].NDTIn2ternational,1986,19:163-167.[6].C[M].:,1994.211-234.(143)[6]HubbellH.Photoncrosssectionsattenuationcoefficientsandenergyabsorptioncoefficientsfrom10keVto100GeV[A].NSRDS2NBS[C].Washington:1969.[7]McCulloughEdwinC.Photonattenuationincomputedtomography[J].MedicalPhysics,1975,2(6):307.[8],.[M].:,1992.1028-1042.[9]JanML,ChenCY,YehCK,etal.3Dimagerecon2structionusingconebeamtomography[J].NDT&EInternational,27(2):83-87.351:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.