EAST大型托卡馬克裝置縱場超導(dǎo)磁體熱負(fù)荷的計算與實驗.pdf

1、東華大學(xué)碩士學(xué)位論文EAST大型托卡馬克裝置縱場超導(dǎo)磁體熱負(fù)荷的計算與實驗姓名：浦云霞申請學(xué)位級別：碩士專業(yè)：熱能工程指導(dǎo)教師：顧平道20061201CalculationsandExperimentsoftheTFMagnetsHeatLoadonEASTAbstractsTheEASTisafullysuperconductingfusionexperimentaldevice，andithasbeenfundedasaNation

2、alMeg—scienceEngineeringProjectThetoroidalfield(TDmagnetsisoneofthemostimportantpailsofEASTItismadeofNbTffCucableinconduitconductor(CICC)Theyarecooledwithforcedflowsupercriticalheliumandthewindingsshouldoperateatthetempe

3、raturefrom38Kto45KConduction，convectionandradiationcanbringheatloadWhenthe“ITmagnetsworkatthetemperatureof38K一45Ktheheatloadis3928Winwhichtheheatloadfromnitrogenscreen，rarefactivegasandnuclearheatarethemainlycomposion，ab

4、outninety—sixpercentofitThetransientthermalanalysisistocalculatetheAlternatingCurrent(AC)lossesduringplasmadischargeandafterplasmadisruptionThecalculationsshowtheaveragelossesisalmost18]／mandthetotalquantityofheatCallrea

5、chto4375WTheprocessofthelowtemperaturesystemistotakeawayheatloadofTFandprovidesomewetheliumtocoolthecurrentleadThenthesuperconductingmagnetscanworksteadilyinthenaturalordisturbedstateArecommendationofthetoroidalfield’Sco

6、oledfashionisstatedindetailinthepaperThepaperalsocalculatedthenecessaryheliummassflowrateforTFcoilduringcoolingthemagnetfrom300Kto80KThemassflowalsoshouldkeep1969／satthetemperatureof38Kand2189／safterplasmadisruptionAgood

7、performanceofmagnetisachievedsuccessfullyduringthecoolexperimentontoroidalfieldSomeimportantparametersofmagnet，suchasthepressure，temperature，theheliumfluxaremeasuredTheresistanceofjointislessthan2x10—90，andthepressureint

8、hemachinealwaysmaintain10—4～10一paThevelocityintheprocessofcool—downfrom300Kto80Kis102K／hButfrom80KTO40Kthevelocityisslower，it’SjUStohly045K／hthedeferencebetweenthemisbecause(fftheshrinkageofstainlesssteelThesedataarevery