cityvariedbetween0and0.28m/s．theflowpatteroervedduringthetestsincludedstratifiedflow、waveflowandaularflow．theexperimentresultsshowedthatallthefourtypesofesmtwo-phaseflowmetersmentionedabovehavestableextractingratioortheextractionratiochangewithdefinitemaers．theflowmeterswereabletoworksteadilyandaccuratelyoverawiderange．theaverageerrorwaslethan5,andthebestresultseverreachedwaswithin3.
theesmwithchineseintellectualpropertyprovideanewwaytosolvethedifficultproblemoftwo-phaseflowmeasurementinengineering．byextracting,thesizeofseparatorcanbereducedgreatly；byseparating,themeasurementoftwo-phaseflowistralatedintothatofsinglephaseflowandbychoosinganaropriatedistributorverystableextractionratiocanbeobtained．allthesewouldmakeitpoibleforthetwo-phaseflowmeterstoaroachorevenreachtheprecisionofsinglephaseflowmeters．thecostofaesmtypetwo-phaseflowmeterisabout30000rmb(anmrtwo-phaseflowmeterwiththeprecisionofesm,costs105～106usdollar).sotwo-phaseflowmeterswouldalsobeaslargelymanufacturedandwidelyusedassinglephaseflowmeters．
k

eywords：flowmetertwo-phaseflowextractingandseparatingmethod

上一页  [1] [2] [3] [4] [5] [6] [7] [8]