2010-12-072011-05-092007AA05Z2081005-03292011檭檭檭檭檭檭檭檭檭檭檭檭殐殐殐殐07-0010-07710049、、。。、、。80%~95%95%95%。。TH327Adoi10.3969/j.issn.1005-0329.2011.07.003LeakageAnalysisandEffectonVolumetricEfficiencyofTwin-screwMultiphasePumpwithHigherGasVolumeFractionsWANGKaiHUBinCAOFengWANGWen-yiLIQi-guangXINGZi-wenXi'anJiaotongUniversityXi'an710049ChinaAbstractTheleakagepathoftwin-screwmultiphasepumphasbeenanalyzedbythemathematicalmodelontheleakageofmultiphasepump.Themodelincludetopclearanceoftoothrootclearanceoftoothandflankclearanceoftooth.Thevolumetricefficiencymodelofisalsoestablished.Thenthemodelsareverifiedbytheresultsofliterature.TheeffectofgasvolumefractionsGVFrotatespeedfluidviscosityonvolumetricefficiencyisalsostudied.TheresultsindicatedthattheleakagerateoftopandrootdecreasedbuttheleakagerateofflankdecreasedfirstandthenincreasedwhentheGVFincreasedfrom80%-95%thevolumetricefficiencyalsoincreasedwiththeincreasingofGVF.TheGVFshouldbellowed95%sincethevolumetricefficiencydecreasedsharplywhentheGVF>95%.Thevolumetricefficiencywillincreasewiththeincreasingofrotorspeedandviscosityoffluids.Keywordstwin-screwmultiphasepumpleakageanalysisvolumetricefficiency1、、。01FLUIDMACHINERYVol.39No.72011。。。。31123。31。1。23。、、。、、。22.1234。232145。46Δp=0.066Lρ0.75v1.75μ0.25δ1.251Qc=Av112011397Qc=lhδ2ntδ1.25Δp0.066sρ0.75μ0.()251/1.752Δp=ρ21lh()δ2Q1.75cζ+0.066sρ0.75μ0.252ntδ1.()25Qclh()δ1.7533Qc=Δp0.57/ζρ21lh()δ2+0.066sρ0.75μ0.252ntδ1.251lh()δ[]1.750.574Δp———PaL———mL=s/2A———m2ζ———m3/s0.25δ———mμ———kg/m·ss———mnt———nt=1lh———m2.25。2。6。55δf。。110mm111mm115mm110mm110.2mm。2.36。。67Qr=A2Δp/ρ1/2521FLUIDMACHINERYVol.39No.72011A———m2A=sδ/275Qr=sδ22Δpρ1/262.4Qth=4×60Vn9ηV=QrealQth×100%12Qlip———m3/hQreal———m3/hQth———m3/h33.180%80%~90%。1%mmmmmm800.1746326.80.468520.00.158726.5850.1746326.80.465820.00.158726.5900.1745326.80.465820.00.158526.5940.1722326.80.465820.00.154126.5980.1701326.80.465820.00.149926.5990.1694326.80.465820.00.148526.580%~94%94%、。98%、99%。。1。80%、85%、90%、94%、98%99%、2。2%808590949899m3/h505050505050m3/h24.8525.6626.7727.1617.6518.41%49.751.353.554.335.336.88。895%95%。Q2。。Q1、Q31Q1、Q32。Q3Q2Q3Q1。910。31201139791090.41MPa、0.48MPa、0.55MPa、0.62MPa0.69MPaGVF60%95%。1080%95%。95%。5。。。1180%~95%。1195%95%。95%。3.2。。12。。。41FLUIDMACHINERYVol.39No.72011。12。3.3GVF80%。1、5、10、50、100200mPa·s1.0MPa。413。13。。。。50mPa·s。。1。231205r/min1800r/min。。13。。100mPa·s100%。、、。41512011397。280%~95%95%95%34100cp100%5。1RbigerTMAMKWardJHausmannG.TheoreticalandExperimentalAnalysisofaMultiphaseScrewPumpHandlingGas-liquidMixtureswithVeryHighGasVolumeFractionsJ.ExperimentalThermalandFluidScience20083281694-1701.2.J.200735676-78.3.J.200836832-35.4CereijoAMM.MultiphaseTwin-screwPumpModelingForTheOilAndGasIndustryD.TexasA&MUni-versity2003.5MuhammadIAliMSMasahiroKawaji.AdiabaticTwo-phaseFlowinNarrowChannelsbetweenTwoFlatPlatesJ.TheCanadianJournalofChemicalEngi-neering1993715657-666.6.M.2003.1983-71004928。787R22R224GS4GS。4GSR22。510010234GSR22。、、HxDx、D2H。1.J.200423275-78.2.J.20071835.3.J.199412318-21.4JohnFinnemoreEJosephBFranzini.10M.2006.1969-201206888。61FLUIDMACHINERYVol.39No.72011