10-乏燃料贮存设备热工流体分析_周有新

乏燃料贮存设备热工流体分析Thethermal hydraulicanalysisofspentfuelstoragedevice中广核研究院CNPRI周有新YOUXINZHOUApril6 2020 Realizeinnovation Restricted SiemensAG2017 乏燃料湿式贮存热工水力分析 乏燃料干式贮存热工水力分析 Thethermal hydraulicanalysisofspentfuelwetstorage Thethermal hydraulicanalysisofspentfueldrystorage Agenda 乏燃料湿式贮存热工水力分析 乏燃料干式贮存热工水力分析 Thethermal hydraulicanalysisofspentfuelwetstorage Thethermal hydraulicanalysisofspentfueldrystorage Agenda 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage Aspentfuelstoragepool SFSP ateachunitoftheNuclearPowerPlantisusedtostoretheunloadedspentfuelassemblies Thethermal hydraulicanalysisforSFSPisperformedtoevaluatethecoolingcapabilityoftheSFSPinordertopreventthelocalboilingoccursinthehugeamountofracksandnarrowflowpaths 核电站的乏燃料水池用来贮存换料的乏燃料组件 热工水力分析评估水池的冷却能力 确保水池中不会发生局部沸腾 ThereferenceSFSPcontainsmorethan900rackcellswiththesamestructureandpitchbetweeneachother itisnecessarytodetermineanoptimizedmeshforonerackcell 乏燃料贮存格架Fuelstoragerack 乏燃料水池中设有900多个相同结构的乏燃料贮存格架 需对其网格进行敏感性分析 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage 出口腔室Outletplenum 活性区Activezone 非加热区Non heatingzone 进口腔室Inletplenum 燃料组件Fuelassemblyinsidetherack 非加热区Non heatingzone 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage 整体视图overallview 流体单元fluidcell 格架单元轴向温度分布temperaturevariationalongarackcell 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage Mesh1足以表达格架内部的传热情况 thecoarsemesh mesh1 issufficienttodescribetheheat upinsidetherackcell 整体网格图OverallviewofSFSPmesh 乏燃料组件FuelAssemblies 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage 卸料组件惩罚方法penalizingmethod 卸料组件中心方法centermethod 乏燃料组件活性段三维温度场3Dviewofthewatertemperaturefiledintheactivezones 61 02 58 01 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage 底部横向速度场Transversevelocityfieldinthebottom penalizingmethod 热段纵向温度场Temperaturefieldinthehotzone penalizingmethod 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage Asapreviouswork themeshsensitivitystudycangetanaccurateenoughrackcellmeshtomodelthewholeSFSP TwoFAlayoutscenariosareperformed thecomparingresultsshowthatthispenalizingmethodismoreconservative Moreover thecalculationresultscanbetterdescribethethermal hydraulicphenomenaoccurredintheSFSP 网格敏感性分析可以得到单个贮存单元的最优化网格 分析对比两种不同的乏燃料布置方案 找到最保守的方法 计算结果可以描述乏燃料水池里的热工水力现象 乏燃料湿式贮存热工水力分析Thethermal hydraulicanalysisofspentfuelwetstorage 乏燃料湿式贮存热工水力分析 Thethermal hydraulicanalysisofspentfuelwetstorage Agenda 乏燃料干式贮存热工水力分析 Thethermal hydraulicanalysisofspentfueldrystorage 干式贮存容器Drycaskstoragesystem 金属运输容器Metaltransportcask HOLTECHI STORM NAC STC 乏燃料干式贮存热工水力分析Thethermal hydraulicanalysisofspentfueldrystorage 乏燃料干式贮存厂房workshop 混凝土外筒容器Storageoverpack 金属内胆容器MultiPurposeCanister 干式贮存容器Drycaskstoragesystem 金属内胆容器MultiPurposeCanister 混凝土外筒容器Storageoverpack 厂房workshop 1 2 3 干式贮存容器Drycaskstoragesystem 燃料组件等效导热系数FuelAssembly 内胆传热特性计算MPCheattransfer 外筒传热特性计算Overpackheattransfer 厂房传热特性计算Workshopheattransfer 干式贮存容器Drycaskstoragesystem 燃料棒温度计算结果 示例 fuelrodtemperaturefieldforTavg 64 贮存单元横截面网格模型 局部 CrosssectionofFA 燃料棒和导向管网格模型Fuelrodandguidetube 二维网格模型图2Dcalculationmesh partial 干式贮存容器Drycaskstoragesystem 轴向热导率Axialheatconductivity 径向热导率Radialheatconductivity 干式贮存容器Drycaskstoragesystem 燃料组件等效热导率Fuelassemblyequivalentheatconductivitycoefficient 筒体周围的流体流速明显大于厂房其他位置的流体流速 气流受筒体加热后主要向厂方顶部流动 厂房内气体温升约15 速度场Velocityfield 温度场Temperaturefield Thegasvelocitynearthecaskisbiggerthanotherplace theflowdirectionisup Thetemperatureriseamountofthegasisabout15 干式贮存容器Drycaskstoragesystem 厂房模型纵截面分析结果Theresultofworkshopmodel 筒体靠近厂房转折壁面处有一个明显的低速区 厂房底部温度基本一致 各筒体温度相差不大 Thevelocityofthecaskneartheturnsideoftheworkshopislower Thetemperatureofthecaskisnearlythesame 速度场Velocityfield 温度场Temperaturefield 干式贮存容器Drycaskstoragesystem 厂房模型横截面分析结果Theresultofworkshopmodel 外界空气从下部通风口进入 沿着内 外筒体之间的空隙上升 从上部通风口流出 空气被内筒体加热 温度逐渐升高 Theairflowsfromdowntoupalongthegapbetweeninanoutcask TheairisheatedbytheMPC 速度场Velocityfield 温度场Temperaturefield 干式贮存容器Drycaskstoragesystem 外筒模型分析结果Theresultofoverpackmodel 燃料组件横截面TheFuelAssemblysection 下支撑进气孔截面Thebottomsection 干式贮存容器Drycaskstoragesystem 内胆模型分析结果 速度场TheresultofMPCmodel 整体视图燃料组件区45度纵截面图不锈钢支撑结构WholeFuelassembly45 sectionSSbody 干式贮存容器Drycaskstoragesystem 内胆模型分析结果 温度场TheresultofMPCmodel 贮存单元Storagecell 铅lead 传热板Heattransferplate 翅片fin 支撑板SSsupportplate 屏蔽树脂shieldingmaterial 减震器theimpactlimiter 金属运输容器Metaltransportcask 乏燃料运输容器分析模型Theanalysismodelofspentfueltransportcask 整体容器模型典型单元模型totalcaskmodelcrosssectioncaskmodel 燃料 格架间隙FA rackcellgap 格架 内筒体间隙Basket innerbodygap 铅 外筒体间隙Lead outerbodygap 燃料组件Fuelassembly 铝合金传热板Aluminumplate 不锈钢支撑板Supportplate 金属运输容器Metaltransportcask 径向热导率Radialheatconductivitycoefficient 315 6 0 89W m NAC STC 315 6 1 04W m 金属运输容器Metaltransportcask 燃料组件等效热导率Fuelassemblyequivalentheatconductivitycoefficient 计算结果ModelCalculationResult 沿特征线温度分布Thetemperaturedistribution 温度场Thetemperaturefield 金属运输容器Metaltransportcask 在NAC STC报告中最高燃料温度为284 44 计算结果偏差量约0 7 max FAtemperatureintheNAC STCreportis284 44 thedeviationis0 7 火烧试验计算结果Theresultoffiretestcalculation 试验件表面温度变化Thecasksurfacetemperaturevariation 火烧前后外表面情况对比Thecaskoutersurface b a fire 火烧前beforefire 火烧后afterfire 金属运输容器M