超低温轨道式球阀密封补偿结构设计计算_王万平

2015104010LUBＲICATIONENGINEEＲINGOct．2015Vol.40No.10DOI10.3969/j.issn.0254－0150.2015.10.0212014－01－051988—[e-mail]．610065檿檿檿檿檿檿。。。TB42A0254－0150201510－100－04檿檿檿檿檿檿DesignandCalculationofSealingCompensationStructureinCryogenicOrbitBallValveWangWanpingZhangYongbinYaoJinSchoolofManufacturingScienceandEngineeringSichuanUniversityChengduSichuan610065ChinaAbstractInordertocompensatethestressvariationofsealingsurfaceofthecryogenicorbitballvalvewhenthetemperaturechangesinworkingconditionacompensationstructurewasproposedwhichcouldbeusedintheultra-lowtemperaturecondition．Accordingtothetransmissioncharacteristicsoforbitballvalvethevaluerodwasdesignedastwosections．Anelasticcomponentwiththeenergystoragefunctionwasdesignedbetweentheupanddownvaluerodcomponentstocompensatethesealdeformationcausedbythetemperaturedifferenceintheworkingcondition．Thedesignandcalculationmethodofthecompensationstructurewasintroduced．Simulationcalculationsconfirmedthatthecompensa-tionstructurecouldgreatlyimprovethereliabilityofsealinginthelowtemperature．Keywordsorbitballvalvesealingcompensationsealpressure。、。、、1－2。、3－4。。5－7。。ANSYSWorkbench14.0。11。1Fig1Thesealingcompensationstructureincryogenicorbitballvalve。22.12。2Fig2TheforceanalysisoforbitballvalvesealingsystemFaNAFa。1∑X=0NAcosα+NB=Fm∑Y=0N2cosβ=N1cosβ+NAsinα∑M=0LANA－LBNB=02Fm=N1sinβ+N2sinβ3Fa=NAsinαFa=L'BsinαL'A+L'BcosαFm1SＲmmβαL'AL'A=LAcosα+LrsinαL'BL'B=LB+fBdB2fBFmNFm=πD+bmbmqmfqmfMPabmmmDmm。2.28－9。1T=t1qmfε1=qmfE1E1、ε1T=t1。2T=t1T=t2ΔSΔS=ΔL×ΔT×H=ΔL×t1－t2×HΔL×10－6℃－1Hmm。ε2=ΔSHqf=E2ε1－ε2E2T=t2。1012015103T=t1T=t2ΔFm=πD+bmbmqmf－qf=πD+bmbmqmfE1－E2+E1E2ΔLt1－t2E12ΔFa=L'BsinαL'A+L'BcosαΔFm=πL'BsinαD+bmbmqmfE1－E2+E1E2ΔLt1－t2E1L'A+L'Bcosα3t2qmf。2.3Kε2ΔxΔx=ε2×Htanα=ΔStanα=ΔL×t1－t2×Htanα4KK=ΔFaΔx=πL'BtanαsinαD+bmbmqmfE1－E2+E1E2ΔLt1－t2HE1L'A+L'Bcosαt1－t2ΔL53DN2520～－196℃。3.113FaF'aFa=L'BsinαL'A+L'BcosαFmF'a=KΔx+Fa=ΔFa+L'BsinαL'A+L'BcosαFm3Fig3Thesimplifiedmodeloffiniteelementanalysis2316L。316L。1316L。1316LTable1Thepropertiesofsteel316Lt/℃－19622ρ/kg·m－379707970k/W·m－1·℃－17．914．7c/J·kg－1·K－1190480β/10－6℃－11315．8E/GPa209195ν0．2830．2943.24、520℃－196℃。20℃90MPa－196℃60MPa。420℃Fig4Thestressdistributiononthesealingsurfaceat20℃5－196℃Fig5Thestressdistributiononthesealingsurfaceat－196℃20140620℃－196℃。4、6。6－196℃Fig6Thestressdistributiononthesealingsurfaceat96℃aftercompensation4。【1】．M．2000．【2】．M．2001．【3】．J．201439767－70．LiuHuanhuanZhangQiuxiangLiShuangxietalSealingperformanceofglobevalveofflatnon-metallicdiscJ．Lubri-cationEngineering201439767－70．【4】．J．199941－4．MaZudaWuJianwu．CharacteristicsofthetrackballvalveanddesignJ．Valve199941－4．【5】．J．2009226－28．WuTangrongTangYong．AnalysisonsealingcapabilityofvalveundertheinfluenceoflowtemperatureJ．Valve2009226－28．【6】．LNGJ．201032273－78．WuTangrongTangYongSunYeDesignandresearchofcryogenicvalveforLNGtankerJ．ShipEngineering201032273－78．【7】．LNGJ．201038511－14．ZhuLiweiLiuJianhuaZhangLiangetal．NumericalsimulationofstressandtightnessofcryogenicvalveusedinLNGcarrierJ．CryogenicsandSuperconductivity201038511－14．【8】．M．2001．【9】．J．201038230－31．GeQilinLiuJianhuaWuＲuofeietal．MeasuringthethermalconductivityofstainlesssteelatlowtemperatureJ．CryogenicsandSuperconductivity201038230－31．85【3】．J．2014427－31．WangChenghaiLiuXiaojuan．Emulsiontechnologyforalumi-numandaluminumalloyJ．AluminumFabrication2014427－31．【4】．J．200021272－76．YueCunxianGuoSaiwenChenChunhuai．MaintenanceandcontrolofemulsionforhotrollingJ．ShanghaiNonferrousMet-als200021272－76．【5】AhmedＲSutcliffeMPF．Identificationofsurfacefeaturesoncold－rolledstainlesssteelstripJ．Wear20002441/260－70．【6】．J．201037428－34．TangHuiLiFenfang．CurrentstatusanddevelopmenttendencyoflubricantadditivesathomeandabroadJ．SyntheticLubri-cants201037428－34．【7】．、M．2010．【8】ChenGonglunTaoDaniel．Anexperimentalstudyofstabilityofoil-wateremulsionJ．FuelProcessingTechnology2005865499－508．【9】．J．2006313159－162．ZhouYajunZhouHonghui．Characterandfunctionofthefric-tionduringtheprocessofaluminumrollingJ．LubricationEn-gineering2006313159－162．【10】．J．2014421036－39．XiaoYouchengLiShengJingJianfangetal．DevelopmentandapplicationoftheemulsionforaluminumalloyhotrollingJ．LightAlloyFabricationTechnology2014421036－39．【11】ChunMSLenardJG．Hotrollingofanaluminumalloyusingoil/wateremulsionsJ．1997722283－292．301201510