基于電容層析成像技術(shù)的氣液兩相流參數(shù)檢測(cè).pdf

1、浙江大學(xué)碩士學(xué)位論文基于電容層析成像技術(shù)的氣液兩相流參數(shù)檢測(cè)姓名：崔海利申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：檢測(cè)技術(shù)與自動(dòng)化裝置指導(dǎo)教師：黃志堯王保良20060201ABSTRACTTwophaseflowwidelyexistsinmanyindustriessuchaschemicalindustrymetallurgicalindustryenergyindustrylightindustryandSOonTheresearchonthetw

2、o—phaseflowwhichhasbeenoreofthefrontiersubjects，isdevelopingrapidlyHowevertheinherentcomplexityofthetwophasemixturemakesitdi伍cultvtomeasuretheparametersofthetwophaseflOWInmanycases，themeasurementtechnologyforthetwophasef

3、lowhasbeenoneofthebottlenecksifl協(xié)eresearchfieldofthetwo—phaseflowMasSqualityandflowmtearetwoimportantparametersofthetwophaseflownlethesisresearchestheapplicationofelectricalcapacitancetomography(ECT)tot11emeasurementofth

4、emassqualityandtheflowrateoftheoil，gastwophaseflowThemainworkofthethesisincludes：1BasedOiltheelectricalcapacitancetomographytechniqueandthemodelwhichindicatestherelationshipbetweenthevoidageandthemassqualityamethodisprop

5、osedtomeasurethemassqualityoftheoilgastwo，DhaseflowSeveralmodelswhichindicatetherelationshipbetweenthevoidageandthemassqualitvofthegas—liquidtwophaseflowareanalyzedAsuitablemodelisselectedtoobtainthemassqualityandthemode

6、lparametersareoptimizedbasedontheflowpatternThemodelparametersforvariousflowPattemsareobtainedbytheleastsquaremethodInthemeasurementprocess。theflowpaRemoftheoil—gastwophaseflowisjdentifiedfirstlyandthell。combinedwiththev

7、oidageobtainedfromtheECTsystemthemassqualityisobtainedbyusingasuitablemodelofwhichparametersarecorrespondingtotheidentifiedflowpatternExperimentalresultsshowthattheproposedmethodiSeffectiveandtheroot—mean—squareerrorsoft

8、hemassqualityforvariousflowpatternsarelessthan7％2CombiningthemassqualitymeasurementmethodwiththeVenturimetertheflowrateoftheoil—gastwophaseflowcallbeachieved，F(xiàn)iveflowratemeasurementmodelsofVenturimeterareanalyzedPrimarys

9、tudyhasbeentakentOmeasurethetotalITIaSSflowrateandtheliquid—phasemassflowrateExperimentalresultsshowthatdeLeeuwrelationCangiveagoodmeasurementresultforthebubbleflOWthestratifiedflow也eslugflowandtheannularflowtheroot—mean