高效风能离心泵水力性能优化匹配-研究

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1、江苏大学硕士学位论文AbstractWindpumpsystemisanewkindofgreenenergytechnology．Itconvertsthewindenergyintoelectricityfirstandthendrivesthemotorofpumptodowaterliftoperation．Thestudyofwindpowerwaterliftsystemathomeandabroadmainlyfocusesontheimprovementofwindturbinesperformanceandthefre

2、quencyconversioncontroltechnology．However,thereislittleresearchonthematchingpumps．Traditionalvanepumpdesignmethodisbasedonthedesignconditions．anditCannotguaranteetherequirementofwindcentrifugalpumpunderwideroperationconditions．Therefore，expandingthehi曲efficiencyareaandim

3、provingtheefficiencyofwindpowercentrifugalpumpsystem、析mthematchingofvoluteandimpellerhaveanimportantsignificanceintheprocessofenergy—savingandcost-reducinginourcountry．Thispaperperformedanoptimizationdesignbasedonfactorialexperimentofcentrifugalpumpwhichusedinwaterliftsy

4、stem，andtheoptimizationparametercombinationWasreceived．Simultaneously,thevoluteandimpellermatchingeffectoncentrifugalpumpWasalsostudied．Finally,experimentofexternalcharacteristicandPIVweredoneontheoptimizedcentrifugalpump．Themainworkisasfollows：1．Theoptimizationofwindene

5、rgycentrifugalpumpimpellerWasbasedonDOE．The3factor2levelsfactorialdesignWasconductedonthedesignindexofefficiencyandlleadatmultipleoperatingpoint，aswellastheindependentvariablefactorsofimpellerhydraulicparameters．Hydraulicdesignand3Dmodelsofthe1schemeswereproceedaccording

6、tothegiventextplan．HexahedralstructuredgridforeachschemeWasadoptedtoimprovethewholeflowfieldnumericalsimulationandtheindexdataof1groupschemesareobtainedtobeanalyzed．(1)TheeffectoftestfactoronthepumpefficiencyunderdifferentworkingconditionsWasresearched．Andthepropermodelw

7、hichWasbasedonvarianceanalysisWasobtainedtoanalyzethemaineffectandinteractioneffectofvariablefactors．(2)Accordingtotheoptimizationrequirement，efficiencyofthreeworkingconditionsincluding0．6Q、0．8Q、1．00、1．4Qwasoptimized．Finally,wearrivedatthenewimpellerparameterswhichmetthe

8、targets，andthenewimpellerWasredesignedtoperformnumericalsimulation．Theoptimizedimpelleraverageweightede