射流式自吸離心泵的研究.pdf

1、江蘇大學碩士學位論文射流式自吸離心泵的研究姓名：周貴平申請學位級別：碩士專業(yè)：流體機械及工程指導教師：劉建瑞20061216江蘇大學碩士學位論文ABSTRACTThejeRedselfprimingcentrifugalpumpisanewtypeofselfprimingpumpproduct，whichisinventedbyourresearchgroupByaddingaselfcirclejeRedwaresystematth

2、einletofcentrifugalpump，andadoptingthebowltypeofvalveselfmotionclosingsysteminthecircumfluencehole，theselfprimingfunctionofthepumpisreliazedaccordingtOthewaterjettingsuctionComparedwiththetraditionalselfprimingcentrifuga

3、lpump，ithasmanyadvantages，suchassimpleandhoveltystructure，smallvolume，lightweightandeasyoperation；anditiswidelyadoptedinthefieldofagriculturalsaving—waterirrigationBasedontheproblemsofcomplexstrucRRelongselfprimingtimean

4、dlowpumpefficiencywhichexistedinthe11：aditionalselfprimingcentrifugalpumps，theinnerflowofthejettedselfprimingcentrifugalpumpisinvestigatedsystematicallybYcombiningtheoreticalanalysis、experimentalresearchesandnumericalsim

5、ulationThemainpointsofmyworkarelistedasfollowing：1，Thestructure，thebasiccharacteristicsandtheworkingprincipleofthejettedselfprimingcentrifugalpumparesystematicallyintroducedAndbased011presentdesignformulaforpumphydraulic

6、modelandcombinedthecharacteristicsofthePump，theprincipleandmechanismofdesignarediscussedde印lythehydraulicdesignoftheimpellerg試1dvanesandvolutealedoneandrevised2Forthefirsttime，theshelltheoryinmaterialmechanicsisusedinthe

7、bowltypevalveofselfmotionclosingsystemtodeducethefomulafortheaxialdisplacementandcalculateitsvaluetheoreticallyNumericalsimulationforthestructureanalysisisdoneinthesoftwareofANSYS，bydividingthevalvetothreepartstheaxialdi

8、splacementarCgainedrespectivelyThecalculatedresultsshowthatthebowlvalveCanhecompressedentkelyfortheaxialmaximaldisplacement2276nlmisbiggerthanthedesignedclearance10mm3The3DmodelofthepumPandselfprimingsetareconstructedint