简介：Inertialconfinementfusiontargetsarecomplexsystemsdesignedtoallowfinecontroloftemperatureandpressureformakingprecisesphericalicelayersofhydrogenisotopesatcryogenictemperatures.Wediscussthevarioustechnicalconsiderationsforamaximumleakratebasedonheatloadconsiderations.Thismaximumflowrateturnsouttobe5×10~(-6)standardccpersecond,whichcanbecausedbyanorificelessthanhalfamicronindiameter.Thismakestheidentificationofthelocationandresolutionoftheleakasignificantchallenge.Toillustratethis,weshowcaseoneexampleofapeculiarfailuremodethatappearedsuddenlybutpersistedwherebytargetproductionyieldwasseverelylowered.Identificationoftheleaksourceandtherootcauserequiresverycarefulanalysisofmultiplethermomechanicalaspectstoensurethattheendsolutionisindeedtherightremedyandisrobust.

简介：Cavitationisoneofthetroublesomeproblemsinrocketturbopumps,andsincemostofhigh-efficiencyrocketpropellantsarecryogenicfluids,socalled'thermodynamiceffect'becomesmoreevidentthaninwater.Inthepresentstudy.numericalandexperimentalstudyofliquidnitrogencavitationin2DLavalnozzlewascarriedout,sothattheinfluenceofthermodynamiceffectwasexamined.Itwasrevealedthattemperatureandcavitationhavestronginter-relationshipwitheachotherinthermo-sensitivecryogenicfluids.

简介：Inordertoovercometheinconvenienceofmanualbubblecounting,abubblecounterbasedonphotoelectrictechniqueaimingforautomaticallydetectingandmeasuringminutegasleakageofcryogenicvalvesisproposed.Experimentshavebeenconductedonaself-builtapparatus,testingtheperformancewithdifferentgasinletstrategies(bottomgas-inletstrategyandsidegas-inletstrategy)andtheinfluenceofgaspipelength(0,1,2,4,6,8,10m)andleakagerate(around10,20,30,40bubbles/min)onfirstbubbletimeandbubblerate.Abufferof110cm3isinsertedbetweenleakagesourceandgaspipetosimulatethedown-streamcavumadjacenttothevalveclack.Basedonanalyzingtheexperimentaldata,experientialparametershavealsobeensummarizedtoguideleakagedetectionandmeasurementforengineeringapplications.Apracticalsystemhasalreadybeensuc-cessfullyappliedinacryogenictestingapparatusforcryogenicvalves.

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简介：Ininertialfusionenergy(IFE)research,aconsiderableattentionhasrecentlybeenfocusedontheissueoflargetargetfabricationforMJ-classlaserfacilities.Theignitionandhigh-gaintargetdesignsrequireacondenseduniformlayerofhydrogenfuelontheinsideofasphericalshell.Inthisreport,wediscussthecurrentstatusandfurthertrendsintheareaofdevelopingthelayeringtechniquesintendedtoproduceignition,andlayeringtechniquesproposedtohighrepetitionrateandmassproductionofIFEtargets.

简介：Anexperimentalmethodispresentedtoanalyzethedynamicstabilityofthegasbearingforsmallcryogenicturbo-expanders.Therotationimbalanceresponseandtheshapeoftherotororbitwereobtainedfordifferentspeedsupto110,000rpm,andthecriticalspeedoftherotor-bearingsystemwasdeterminedbyaBodediagram.AnFFTsignalanalyticalmethodwasappliedtoidentifytheresonancefrequency,andthewaterfallplotwaspresented.Duringthewholeprocessofspeedinguptothedesignedspeedof110,000rpm,therotor-bearingworksstablywithnowhirlinstability,whichisvalidatedinawaterfallplot.Also,thetestedrotor-bearingmodelwasanalyzedtheoretically.Itwasprovedthattheexperimentalresultswerehighlyconsistentwiththoseoftheoreticalcalculations.Thustheexperimentalmethodproposedheretoanalyzethedynamicstabilityofthegasbearingisfeasible.

简介：DeepcryogenictreatmenttechnologyofelectrodesisputforwardtoimproveelectrodelifeofresistancespotweldingofaluminumalloyLF2.Deepcryogenictreatmentmakeselectrodelifeforspotweldingaluminumalloyimprove.Thespecificresistivityofthedeepcryogenictreatmentelectrodesistestedandexperimentalresultsshowthatspecificresistivityisdecreasedsharply.ThetemperaturefieldandtheinfluenceofdeepcryogenictreatmentontheelectrodetiptemperatureduringspotweldingaluminiumalloyisstudiedbynumericalsimulationmethodwiththesoftwareANSYS.Theaxisymmetricfiniteelementmodelofmechanical,thermalandelectricalcoupledanalysisofspotweldingprocessisdeveloped.Thenumericalsimulationresultsshowthattheinfluenceofdeepcryogenictreatmentonelectrodetiptemperatureisverylarge.

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简介：Adiode-pumpedmasteroscillatorpoweramplifiersystembasedonacryogenicYb:YAGactive-mirrorlaserhasbeendeveloped.Theperformancesofthelaseramplifieratlowtemperatureandroomtemperaturehavebeeninvestigatedtheoreticallyandexperimentally.Amaximumoutputenergyof3.05Jwithanoptical-to-opticalefficiencyof14.7%hasbeenachievedbyusingthemasteramplifiersystem.

简介：Usingcryogeniclasertechnology,itisnowpossibletodesignanddemonstratelasersthathaveconcomitanthighaverageandpeakpowers,withnear-diffraction-limitedbeamquality.WerefertothesenewlasersystemsasHAPPlasers.Inthispaper,wereviewimportantlasercrystalmaterialspropertiesatcryogenictemperature,withanemphasisonYblasers,anddiscusstheimportantdesignconsiderations,includingthelaser-induceddamagethreshold,nonlineareffectsandthermaleffects.Acomprehensivemodelispresentedtodescribediodepulsedpumpingwitharbitrarydurationandrepetitionrate,andisusedwiththeFrantz–Nodvikequationtodescribe,tofirstorder,theperformanceofHAPPlasersystems.Acomputercodewithrepresentativeresultsisalsodescribed.

简介：ThelargecryogenicsphericaltankforethylenestoragewithindependentintellectualpropertyrighthasbeenforthefirsttimesuccessfullyfabricatedbyHefeiGeneralPurposeMachineryResearchInstitute.Theethylenesphericaltankisakeystoragefacilityforthe

简介：由在扁平的钢带子创伤容器(FSRWV)的墙上分析热转移，全部墙上的温度分发的一个数字模型(包括内部核心墙，扁平的钢带子，夹克衫的外面的柱体；绝缘的层)被作者建立。与模型一起，温度分发；在容器墙中的长度变化；在低温度的扁平的钢带子是计算的；分析。结果证明扁平的钢带子弯屈低温实验法的高压的容器在结构是更简单的，更安全；更容易常规的比那些生产。

简介：摘要：目前国内LNG接收站和调峰站、空分等领域市场仍主要依赖进口产品，而国内低温泵制造商不多。针对低温泵市场，以创新理念，高起点投入研发永磁潜液低温泵新技术，由于深冷永磁同步电机具有高效、智能、静音和发热量小等技术优势，研制的永磁低温泵符合国家“碳达峰、碳中和”的环保政策，产品的推广应用将实现公司、客户及国家共赢。永磁低温电泵技术的推广应用是向绿色、节能、环保等方向发展和实现碳达峰、碳中和国家战略目标的必然选择。

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简介：RamanpeaksofvarioushydratesintheH2O-NaCl-CaCl2systemhavebeenpreviouslyidentified,butaquantitativerelationshipbetweentheRamanpeaksandXNaCl(i.e.,NaCl/(NaCl+CaCl2))hasnotbeenestablished,mainlyduetothedifficultytofreezethesolutions.Thisproblemwassolvedbyaddingaluminapowdertothesolutionstofacilitatenucleationofcrystals.Cryogenic(-185oC)Ramanspectroscopicstudiesofalumina-spicedsolutionsindicatethatXNaClislinearlycorrelatedwiththetotalpeakareafractionofhydrohalite.Capsulesofsolutionsmadefromsilicacapillarywerepreparedtosimulatefluidinclusions.Mostoftheseartificialfluidinclusionscouldnotbetotallyfrozenevenattemperaturesaslowas-185oC,andthetotalpeakareafractionofhydrohaliteisnotcorrelatedlinearlywithXNaCl.However,thedegreeofdeviation(?XNaCl)fromthelinearcorrelationestablishedearlierisrelatedtotheamountofresidualsolution,whichisreflectedbytheratio(r)ofthebaseline"bump"area,resultingfromtheinterstitialunfrozenbrinenear3435cm-1,andthetotalhydratepeakareabetween3350and3600cm-1.Alinearcorrelationbetween?XNaClandrisestablishedtoestimateXNaClfromcryogenicRamanspectroscopicanalysisforfluidinclusions.

简介：这研究调查低温实验法的张力的性质和小说的破裂行为搅动焊接并且32Mn-7Cr-1Mo-0.3N钢的焊接以后的对待热的关节。低温实验法的易碎的骨折，发生在同样焊接的关节，与在联合乐队结构包含钨的剩余粒子有关。韧化的焊接以后的水导致了关节的低温实验法的intergranular易碎物，它在韧化的焊接以后的水期间与溶质原子的非平衡分离有关。在550点退火吗？？