第58卷第1期2024年1月原子能科学技术AtomicEnergyScienceandTechnologyVol.58,No.1Jan.2024钼锝靶件辐照装置堆外自然循环实验研究郝思佳，张培升，高永光，刁均辉*，韩智杰（中国原子能科学研究院反应堆工程技术研究所，北京102413）摘要：钼锝同位素辐照装置的堆外热工水力研究，对于确定靶件的辐照参数和辐照安全具有重要意义，相关结果可为靶件的设计验证和人堆辐照提供技术支持。本文针对自主研发的钼得靶件辐照装置，设计了堆外传热实验台架，开展了钼锝靶件辐照装置堆外传热验证实验，对比分析了不同热流密度、不同模拟靶件外径、不同辐照装置结构等条件下实验段的温度分布。结果表明，辐照装置内导流管的设计可有效提高装置的自然循环能力，证明了所设计辐照装置的安全性。关键词：靶件辐照；传热实验；自然对流；传热模拟中图分类号：TL33doi:10.7538/yzk.2023.youxian.0103ExperimentalStudyofNaturalCirculationinOutsideReactorRadiationDeviceforTechnetiumMolybdenumTargetsHAOSijia,ZHANGPeisheng,GAOYongguang,DIAOJunhui",HANZhijie(ReactorEngineeringTechnologyResearchInstitute,ChinaInstituteofAtomicEnergy,Beijing102413,China)Abstract:Technetiummolybdenumisotopeiswidelyusedinthefieldofnuclearmedi-cine,anditsdemandaccountsforabout80%oftheworldmedicalisotopedemand.Irradiationinreactorisanimportantmethodforproductionoftechnetiummolybdenumisotope,whichismainlyproducedandsuppliedbyforeignreactorsatpresent.There-fore,itisofgreatsignificancetorealizeindependentproductionoftechnetiummolybde-numisotopeinChina.Priortotheradiationstudyoftechnetiummolybdenumtargetinreactor,anoutsidereactorheattransferexperimentshouldbeconductedtoverifytherationalityoftheirradiationdevicedesignandobtainitsheattransfercharacteristics,soastoensurethattheradiationoftechnetiummolybdenumtargetinreactorwillnotendangerthesafetyofthetargetandreactor.Atpresent,mostofthestudiesonirradia-tioninreactorsarenotequippedwithforcedcoolingconditions,andthedesignofradia-tiontestingdevicesfornaturalcoolingisrarelycarriedout.Andtherearefewoutsidereactorverificationexperimentsforirradiationdevices.Ifnecessaryoutsidereactorheattransferexperimentscanbecarriedout,itwillprovideimp...
