(,830019):,,,:;;:TE974:B:100628805(2001)03200622031,1989,19956,,,,,2a),11,,,,,,0126001295mm,,0110001125mm,,,,,,,,199637,11H2C1C2C3C4C5,%8817131873149119501911107,,,,199561223b),1110MPa,2110MPa,,:2000208231:,1990,,,,2001,22(3)62Petro2ChemicalEquipmentTechnology,:231),,315MPa,199611,2),0112MPa1115MPa,2,2,,,,,1996911221996911öMPa1125111511171114012601140116c),,,,,1999316,,,,,,3:a),,44OS4,,1m3,,,70,,,,(),,,,,1m1m1m,5mm,,519968,199691997267b)110MPa,,36223.,110MPa1820kgöh,,19961111815kW,,1115MPa0112MPa,,,,,51;2;3N2;4;5;6;7;867,A41225Dg40,,,,,,,,:1)V=PD2U1ö4(1):V,m3ös;D,m;U1,mös,,:V=015V:V,m3ös,:U21ö2g+p1öQg=U20ö2g+p0öQg:p1,MPa;p0,MPa;U0,mös;Q,kgöm3;g,mös22)V=PD20U0ö4:D0,m,D0=717mm,D08mm,8mmc)19995,201Cr18Ni9Ti,,,,,4,,,,462001siumalloysilo,somemeasuresareadopted,suchasovendryingweldingmaterials,removingtheoxidefilmofweldingmaterialandbasemetal,adoptingcoarseweldingwise,lowspeedweldingandincresinglinearenergyetc.Sothesatisfiedeffectisachieved.KeywordsAluminiummagnesiumalloy,Weld2ing,Gascavity,Causeofformation,ProtectionREFORMATIONANDAPPLICATIONOFDRYGASSEALFORCIRCULATINGHYDROGENCOMPRESSORWangChao,etc.SINOPECYanshanbranchcompanyre2finery,P.C102500AbstractThereformationandapplicationsta2tusofdrygassealforcirculatinghydrogencom2pressorsetK2201arementionedbrifly.Theproblemsexistedinactualoperationoforiginalringsealareanalized.Theprinciple,structureandsystemprocessflowsheetofdrygassealarerecommendedbrifly.KeywordsSprialgrooveendfaceseal,Gasfilm,Rotatingring,Staticring,Compensatingring,Expandedtyreseal,FloatingringsealRECONSTRUCTIONOFOILSYSTEMFORCIRCULATINGHYDROGENCOMPRESSORINREFOMINGUNITHuangWeidong.Wulumuqipetrochemicalcompanyrefin2ery,P.C830019AbstractTheproblemexistedincirculatinghydrogencompressoroilsystemofreformingu2nitwereanalizedindetail.Thetechnicalrecon2structionmeasureswereadopteddirectly.Theoperationsituationofoilsystemwasimprovedthoroughly,thusthenormaloperationofcom2pressorwassecured.KeywordsCirculatinghydrogencompressor,Oilsystem,ReconstructionFAILUREANALYSISANDDIAGNOSISONSLIDINGBEARINGOFHIGHSPEEDPAR-TIALFLOWPUMPZhuJiagui,etc.SINOPECYangzipetrochemicallimited2liabilitycompany,P.C210048AbstractBytheuseofmathematicprincipleoftwovibrationmodulation,onthebaseofcalcula2tionthebearingcomponentnaturefrequencyandtheslidingbearingvibrationfrequencythatcanexcitenaturefrequency,thisfrequencyoftwokindvibrationsarerecognozedonthedetailedspectrumbythecommonfrequencyanalyzer.ThusthefailurediagnosisofslidingbearingforSundynehighspeedpartialflowpumpisaccom2plished.KeywordsFailure,Diagnosis,Slidingbearing,HighspeedpartialflowpumpABSTRACTSPETRO2CHEMICALEQUIPMENTTECHNOLOGYStartedPublicationin1980.Bimonthly.May.2001Vol.22No.3