涂硼管中子探测器机械结构的研制-机械工程专业毕业论文

《涂硼管中子探测器机械结构的研制-机械工程专业毕业论文》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、北京化工大学硕士学位论文计数率值优于慨(氦-3)管中子探测器，证明其完全可以替代-3He管中子探测器而成为新环境下的主流中子探测器产品。经过高低温试验发现，温度的变化会对设备的中子计数率产生影响，即高温会使计数率增加；低温会使其减少，而且高温状态对设备读数率值的影响最为严重。但是各个阶段均在允许的偏差范围内，其满足设计要求。在振动试验中对比X轴、Y轴及Z轴振动的实验结果发现，当设备受到X轴(阳极丝径向方向)的振动时对读数的影响最大，中子读数比参考值有所增加，但满足读数增量的要求，故而说明涂硼管的安装形式是合理的、涂硼管的缓解振动设计起到了一定的作用。本文研究了涂硼管中子探测器中核心零部

2、件的设计思路及设计方法，通过软件模拟和实验测试验证了设计思路及设计方法的合理性和正确性，综合判断了设备的可应用性，证明涂硼管中子探测器模块满足实际使用要求。关键词：中子探测器，涂硼管，预拉力对比分析，慢化体数值分析，实验测试万方数据ABSTRACTDevelopmentofboroncoatedtubeneutrondetectorsmechanicalstructureABSTRACTBecausethe3He(helium．3、gasreservesoftheUnitedStatesandRussiagraduallydecrease，nowisinseriousshortsupp

3、lycondition，resultingin3He(helium-3)sharpincreaseingasprices，andhasseverelyaffectedtotheChinesecustomsandbordersuppliesradiationmonitoringsystem(RMsystem)equipmentproduction．Enterprisesinordertomastercoretechnologiesandchangethoseothersdecidetoresearchsubstitutefor3Heneutrondetectors．Andtheneutr

4、ondetectiontechnologyalsoplaysanimportantroleinotherareas，SOit’Snotjustbusinessproblems，isalsotheworld-wideproblemsofNeutronScience．Thusthepapercoatingonthemechanicalstructureofboron—tubeneutrondetectordesign，analysisandtesting，throughthecalculationofcorecomponents，simulationparametersettingsand

5、comparativeanalysisinordertofindareasonable，throughperformancetestsandenvironmentaladaptabilityteststoverifyitsfeasibilityasasubstitutefor3Heneutrondetectors．Thisthesisdesigntheoverallstructureofboron—coatedtubeneutrondetectors，andwithafocusondesignandanalysisofthekeypartsofthedetectorintheboron

6、coatedtubecoatedboronandthemainstructuresandmaterials．Analysistherelationshipsofboroncoatedtubeanode-wire’S万方数据北京化工大学硕士学位论文diameter,anode-wire’Sdipsinthetubeandpretension．Atlasthavethebestvalueoftheanode—wire’Sdiameterandpretension．Thisthesisdesignandanalysisabouttheslow’Smainstructureandmateria

7、lsoftheboroncoatedtubeneutrondetectoranotherkeycomponent．ThispapercomparativeanalysisthemechanicalandnuclearphysicscharacteristicsofPEEKandHDPE，usethemethodofnumericalanalysiscomparingdifferentmaterialsoftheslow’sdeformation