英文翻译应用Solidworks进行离心泵叶轮设计Word文档格式.docx

英文翻译应用Solidworks进行离心泵叶轮设计Word文档格式.docx

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Keywords:

impeller;

axialprojection;

planeprojection;

Solidworks

1thestructuraldesignoftheimpellerinSolidworksenvironment

SizeofthemainstructureoftheimpellershowninTable1.

Solidworksisafullyparametricfeature-basedmodelingsoftware,Solidworksavariableofthedraftoutlineofthepartsdrawingandcomprehensivemodelingcapabilities,asketchorfeature-drivenparameterchangesthesizeandposition,andcanautomaticallycheckthedynamicprocessconstraints.Therefore,trytouseSolidworkssoftwaretotheimpellershaftandimpellerplaneprojectionplaneprojectionmapping,calculatedusingExcelsoftwaretochecktheflowinthestructureafterasatisfactoryapplicationofSolidworkssoftwaretodrawtwo-dimensionalsketchoftheimpellerdesignmodeling.

Table1Sizeofthemainstructureoftheimpeller

2Axialsurfacemappingandinspectionofprojection

Inaccordancewiththeaxialprojectionoftheshapeoftheoutlinesketch,afterthecompletionofdraftoutlinedimensions,dimensiondrivenbychangesintheshapeoutlinesketch,andatthesametimeprovidingadditionalrelevantgeometricalconstraints,suchastheimpelleraroundthecornerattherespectivecoveroutlineoftheimpellerinlet,theflowlinetoaddthefrontcovertangentconstraints,asshowninFigure1canbeobtainedaxialprojection,thetransitioncanrefertothesametypeofimpellerroundtodetermine,orspecifyitssize,accordingtoaxialprojectionofthetestresultstobemodified.

Iftheaxialprojectionofirregularchangesinflowarea,thefluidflowintheflowoccursduringacceleration,deceleration,resultinginthelocalvortexand,therefore,withintheaxialprojectionofpointsneedtoidentifyaseriesofcalculationstocheckthecalculationpointatthefluidflowarea.Hencetheneedforaxialprojectioninaseriesofinscribedcircleandtheinscribedcircleofthecenterpointofthatcalculation,sothisseriesofcircularflowchannelshouldbeevenlydistributedalongthecalculatedpointstoensureuniformity.

Figure1axialprojectionmapping

UnderaxialprojectionSolidworksdrawingafterdrawingthebladebetweenimportsandexportsbeforeandafteraseriesofsmallroundcutinsidethecover,theuseofsize-drivenandtangentconstraintstoensurethattheadjacentcenterdistancebetweenthetwocirclesis10,andalsowiththebeforeandafterthecoversheetflowlinetangenttothesmall,whereatotalof17checkpointstochecktheflowCalculationofstructuraldesignisreasonable.Thenusethesplinetooltolinkupbythecenterchannelcenterline,andthroughthetooltoqueryeachmeasurementpointcalculatedchannelradiusandthelengthofthecenterlineofflowareatocarryouttheinspection,ifthereisanareaofsmall-scaleflowfluctuationsonlyneedtore-dimensioningSolidworksenvironment,re-usequerytoolstodeterminethesizeofthecalculationpointsandre-checkingvariationofflowarea,withoutneedtorepeatallofthegraphicsrendering.

3Impellerplaneprojectionmappingandinspection

SolidworksenvironmentinthiscasethearcdrawnbytwolowspecificspeedimpellershowninFigure2issmall,takethemiddlecircle

=300,calculatethecorrespondingrelative

flowangle

Inthehand-drawngraphicprojectionoftheimpeller,youcancalculatethevalueoftheroundedangleprocessing,buttheuseofSolidworksfordrawingthesamewayiftheusewillnotresultinacontinuouscirclearoundthetwoandleadtosubsequenttwo-dimensionalimpellermodelcannotbe,soyoucancalculatetheangleabovethereferencevalue,usetheverticalandtheconstraintsofthemid-pointbetweenthecorrespondingsegmentinthevertical,sotheshapeimpellerdesignwillachievehighaccuracy;

inSolidworksenvironmentdrawstheplaneprojectionoftheimpeller,youcandrivethroughthesizeandaddingconstraintstochangethegraphics,thecompletionofleafpaintedontheplane-shapedprojection,thecheckgivenleafthickness6mm,completeuseoftheequidistancelinefunctionleavesplanarprojection;

Finally,accordingtothenumberofleavestocompletethecirculararrayofoperatingtheplaneprojectionoftheimpeller.Accordingtotheresultsofchannelchecks,suchastheneedtochangetherelevantsize,youcanchangethegraphicscanbere-marked.

Figure2Planarprojectionmapping

Projectionplaneoftheimpellerbladeshapeintheatlas,theimportandexportintheleavestomakeaseriesofconcentricringsbetweentwoadjacentarcdistanceof10mmbetween,takeapointonthisseriesofconcentriccircularflowasRoad,thecenterofinscribedcircleforaseriesofinscribedcircleasachannelflowareaofthecalculatedpoints;

thisseriesofinscribedcircletangentarcwiththecorrespondingflowline,butthelocationclosetothebladeinscribedcirclearc2tangentcutpoint,inordertoaddtheinscribedcircletangentconstraintsneedtopayattentiontoselectingtheappropriatearcwheretheflowlines,inordertoensurethatallflowlinesinscribedcircleandtangenttothearcatthejunction2thedistancebetweentheconcentriccirclesmaybeslightlylargerorslightlysmallerthan10mm,whichisslightlydifferenthand-drawnplanimpeller;

whilebothaxialprojectionorplanarprojectionmapping,oftenbyaddingtheconstraintsofonekindoranother,willleadtoGraphicsdonotwanttochangesome,sowhenanumberofstructuralelementstodeterminenotchange,youcanaddafixedrelationship,ifnecessary,theseconstraintscanbeterminatedatanytime.

4Three-dimensionalshapeoftheimpeller

Modelstartingfromthecharacteristicsofthree-dimensionalmodelingisthebasicideaoffeaturesandaddfeaturestoformthree-dimensionalmodelingisthebasicmethod.Sofirst,accordingtotheshapeoftheimpellercoverfeatureafterthedraftasshowninFigure3,toaddmaterialstobeusedaftertherotationwheelcoverandtheshape,selecttheplaneastheleafcoverafterthemiddleofsketchingplane,inaccordancewiththeimpellerplaneProjectionmethodofdrawingsketchesforthebladecenterline,whereyoucanusetheclipboardtotheplaneprojectionoftheimpellerbladeprofilecopiedtotheplaneoftheimpellerbackshroud;

andthenfollowthebladesectionprofileforthebladesectioncontourdrawings,sketches,andleavesandaddsectionrelationshipbetweenthecenterlineofpenetration,andthenscannedthree-dimensionalshapeofleaves,intheprocess,leavesthewidthofthetemporarycross-sectionremainsunchanged,andthebladewidthisalwaysequaltotheimports,inthethree-dimensionalshapeofthefrontcoverremovedintheoperationofits.Leavesthree-dimensionalmodelingoperationiscomplete,selectthearray;

Finally,accordingtotheshapeofthefrontcoveroftherotation,three-dimensionalsolidmodelbytheimpeller.Three-dimensionalsolidmodeliscompleted,thesamecanimmediately

amendtherelevantdimensions.

Figure3Three-dimensionalshapeoftheimpeller

5Conclusion

Ontheimpellershaftplaneprojection,planeprojection,Impellerofsolidmodelingmethodcanbeseen:

theuseofthree-dimensionaldesignsoftwarecanaccuratelydrawtheprojectionoftheleavesandleafaxialplaneprojection,graphicsrenderingisaccurateprerequisiteforhigh-efficiencypumpresearchanddevelopment,particularlyleafmechanicalchangesofflowareadirectlyaffectsthefluidflowintheprocessofenergyloss,thusaffectingtheefficiencyofthepump,sothemanufacturingmodelofthepumpimmediatelybeforethechangeofthedesignprocesstoreducethepumpR&

Dcostsandshortenthedevelopmentcyclehasveryimportantsignificance;

Solidworkssoftwaremakesuseofthree-dimensionalshapeoftheimpellerissimple,intuitive,easytodesignaWYSIWYGproductimpellerthree-dimensionalsolidmodelandthenimportitorfiniteelementanalysissoftwareANSYSFLUENTfluidanalysissoftwareandimpellermesh,togiveboundaryconditionssettosimulatethefluidflowimpellertogetthepointswithintheflowofpressure,temperature,speed,developedforthedesigndepartmenttoprovidetechnicalsupportforhigh-efficiencypumps,cangreatlyshortenthedevelopmentcycleofnewproducts,enhancetheircompetitivenessintheinternationalmarket.

应用Solidworks进行离心泵叶轮设计

摘要:

应用Solidworks软件进行叶轮轴面投影和平面投影图绘制，并对流道中线进行准确等分;

对两圆弧法绘制叶片平面投影图中相对液流角的计算误差会造成叶片不连续问题提出修正;

最后介绍离心泵叶轮的二维建模方法，并展望了FLUENT流体分析软件和ANSYS有限元分析软件在新型叶轮研发方面应用的前景。

关键词:

叶轮;

轴面投影图;

平面投影图;

Solidworks

1Solidworks环境下叶轮的结构设计

叶轮的主要结构尺寸如表1。

Solidworks是全参数化特征造型软件，Solidworks有变量化的草图轮廓绘制和全面的零件实体建模功能，驱动参数改变草图或特征的大小和位置，并能够自动进行动态过程约束检查。

因此，尝试采用Solidworks软件进行叶轮轴面投影图和叶轮平面投影图的绘制，并利用Excel计算软件进行其流道检查，在获得满意的结构后应用Solidworks软件绘制的草图进行叶轮的二维设计造型。

表1叶轮主要结构尺寸

2轴面投影图的绘制与检查

按照轴面投影图的形状绘制草图轮廓，在完成草图轮廓后进行尺寸标注，通过尺寸驱动草图轮廓形状的改变，并同时为相关几何要素填加约束关系，如叶轮前后盖板处的圆角分别与叶轮入口轮廓、前盖板处流线添加相切约束关系，即可得到如图1所示的轴面投影图，其过渡圆可以参考同类型叶轮确定，或指定其尺寸，再根据轴面投影图的检查结果去进行修改。

如果轴面投影图流道面积变化无规律，则流体在流道内流动过程中会出现加速、减速、产生局部旋涡现象，因此在轴面投影图内需要确定一系列计算点，以检查各计算点处流体的过流面积。

因此需要在轴面投影图内作一系列内切圆，其内切圆的圆心表示计算点，因此这一系列圆应该沿流道均匀分布以保证各计算点均匀。

图1轴面投影图的绘制

Solidworks环境下轴面投影图绘制结束后，在叶片进出口之间绘制一系列与前后盖板内切的小圆，利用尺寸驱动和相切约束关系保证相邻两圆之间的圆心距为10，并同时与前、后盖板表小的流线相切，此处共取17