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ID:32122575
大小:3.39 MB
页数:81页
时间:2019-01-31
《多级蜗壳式煤制油泵的设计和可靠性分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、江苏大学硕士学位论文ABSTRACTWiththerapiddevelopmentofournationaleconomy,thedemandforoilisgettinggreaterandgreater.However,thereismorecoalthananyotherenergyintheenergystructureofourcountry,whileoilaccountsforasmallproportioninthisstructure.Therefore,itisasignifica
2、ntstrategicmeasuretoobtainoilfromcoaltomeetthedemandforoilandrespondtotheenergychallengeinChina.Themulti—stagepumpwithvoluteisoneoftheimportantequipmentsinthetechnologyofgettingoilfromcoal.Currently,thispumpsusedinthetechnologyofgettingoilfromcoalareall
3、imported.Asaresult,thepriceofthepumpishigh.Meanwhile,theappropriatetechnologycannotbeachieved.Inviewofthepresentsituation,itisveryimportanttodoaseriousstudyonthedesignandreliabilityforthepump,whichisbothofvitalsignificanceinpracticalengineeringandhighac
4、ademicmeaning.Thispaperfocusedonthestudyofthehydraulicdesign,structuraldesign,thenumericalfluidsimulationandthefiniteelementdynamiccharacteristicswitllfluid-solidinteractionofthemulti-stagepumpwithvoluteusedinthetechnologyofgettingoilfromcoal,whichaimst
5、oimprovetheefficiencyandreliabili哆ofthispump.Themainresearchandachievementsofthispaperareasfollows:1.Accordingtothemainapplicationareasofthemulti—stagepump丽thvolute,thestructureofthispumpWasdesignedaftersummarizingtheadvantagesanddisadvantagesofthestruc
6、tureofmulti—stagecentrifugalpumps.2.Referencinghydraulicmodelandlearningfrommaturedesignexperience,thesuctionchamber,impellerandvoluteofallstages’hydraulicofthemulti—stagepumpwithvoluteweredesignedbyadoptingspeedcoefficientmethod.Thestructuralandhydraul
7、icdesignofthispumpwerefirstfinishedinourcountry.3.TheinternalflowWassimulatedbyFLUENT6.3丽thineverystagepumpofthemulti—stagepumpwithvolute.Thenthestaticpressureandtheflowcharacteristicsofspeedwereanalyzed.Meanwhile,theenergyperformanceofthepumpatallstage
8、sWaspredictedonthebasisofnumericalsimulation.4.AfterthevibrationmodelofentirerotorforthefiniteelementWasanalyzedbythefmiteelementsoftwareANSYS,10naturalfrequenciesandthecorrespondingvibrationmodeldiagramcanbeobtained.Thenthecorre
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