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反应釜剖分式机械密封装置的设计-1-摘要反应釜是化工行业的重要设备，是整个化工工艺流程的心脏。其旋转轴机械密封装置是反应釜乃至整个工艺流程发生故障最频繁的关键部位，目前应用广泛的整体式机械密封在维修的时候存在着拆装困难的问题。为解决这个问题，本文提出剖分式机械密封设计方案。以反应釜旋转轴密封为对象，运用机械密封相关理论分析密封机理及性能，并针对实际工业生产中的氯化反应釜用剖分式机械密封进行研究设计。全文共分六章。第一章为引言部分。阐述了本文的研究背景及意义，研究对象及有关领域的研究状况，国内外详细的研究现状，简单介绍了本文主要内容。第二章研究了常见的搅拌设备及其机械密封的原理及组成，优缺点。查找了搅拌设备各相关设备主要元件选材的标准，研究了影响机械密封性能的主要参数，为设计反应釜和剖分式机械密封的设计打下了基础。第三章是对反应釜的罐体尺寸及相关部件的设计选用，第四章对搅拌反应釜的传动装置各主要元件进行设计和选型使之满足设计要求和环境，对罐体相关附件如支座等的选用。第五章剖分式机械密封装置的设计计算，根据所给条件得到剖分式机械密封装置最终的结构第六章为全文的结束语和关于本次毕业设计的建议与设想。关键词:机械密封；剖分式；端面变形；密封设计西南石油大学本科毕业设计（论文）-2-AbstractReactorisanimportantchemicalindustryequipment,istheheartofthewholechemicalprocess.Therotationaxisisthereactormechanicalsealfailureandthewholeprocessakeypartofthemostfrequent,thecurrentwidelyusedinthemaintenanceoftheoverallmechanicalsealdisassemblywhentherearedifficultissues.Tosolvethisproblem,weproposesplitmechanicalsealdesign.Rotaryshaftsealstothereactorasanobject,usingthetheoryofmechanicalsealsandsealingperformanceofthemechanismandtheactualindustrialproductionforthechlorinationreactorsplitmechanicalsealwiththedesignPaperisdividedintosixchapters.Thefirstchapteristheintroduction.Thisstudydescribesthebackgroundandsignificanceofstudyandrelatedresearchinthefieldconditions,adetailedstudyondomesticandinternationalsituationandthemaincontentsofthisarticlebriefly.ChapterIIofthecommonmixingequipmentandtheprinciplesofmechanicalsealsandcomposition,advantagesanddisadvantages.Findtherelevantequipment,mixingequipmentselectioncriteriaforthemajorcomponents,studiedtheeffectsofmechanicalsealperformanceofthemainparametersforthedesignofthereactorandthesplitmechanicalsealdesignfoundation.Thethirdchapterisatankreactorsizeanddesignofrelatedcomponentsselection.ChapterIVofthestirredtankreactormaincomponentsofthegeardesignandselectionsoastomeetthedesignrequirementsandtheenvironment,onthetankandotherrelatedaccessoriessuchastheselectionofbearings.Chaptersplitmechanicalsealdesignandcalculation,accordingtotheconditionshavebeensplitmechanicalsealstructureofthefinalChapterVIforthefulltextoftheconcludingremarksandontherecommendationofthegraduatedesignandideas.Keywords:mechanicalseals；splitseals；facedeformation；Sealdesign.反应釜剖分式机械密封装置的设计-3-目录1绪论................................................................11.1研究的背景和意义..................................................11.2国内外现状........................................................11.2.1国外现状.......................................................11.2.2国内现状.......................................................21.3本文主要内容......................................................32设备方案工作原理简单介绍............................................42.1机械搅拌反应釜....................................................42.1.1换热元件.......................................................42.1.2罐体...........................................................52.1.3传动装置.......................................................52.2密封装置..........................................................93反应釜的结构设计及选型............................................103.1工艺条件.........................................................103.2搅拌罐直径的确定................................................113.2.1确定内筒体和封头的直径.....................................113.2.2初算筒体直径..................................................113.3选取夹套直径.....................................................123.4内筒体及夹套的壁厚计算...........................................123.4.1选择材料，确定设计压力........................................123.4.2夹套筒体和夹套封头厚度计算....................................123.4.3内筒体壁厚计算................................................133.5人孔选型及开孔补强设计...........................................143.6搅拌器的选型.....................................................153.6.1搅拌器选型....................................................153.6.2搅拌附件-挡板.................................................184.传动装置的选型.....................................................184.1搅拌轴功率的计算.................................................184.2电动机的选型.....................................................194.3减速机选型.......................................................204.4机架的选取.......................................................204.5联轴器的选型.....................................................214.6.搅拌轴的计算.....................................................224.6.1轴的强度计算..................................................224.6.2根据临界转速核算搅拌轴轴径....................................244.6.3轴径的最后确定................................................274.7支座选型及校核...................................................275剖分式机械密封装置的设计计算.......................................285.1填料密封.........................................................28西南石油大学本科毕业设计（论文）-4-5.1.1填料材料的确定及横断面尺寸的选择.............................285.1.2填料圈数.....................................................295.1.3填料密封的需用功率............................................305.2机械密封的设计计算...............................................305.2.1密封接触面内外径的计算.......................................305.2.2端面比压与弹簧比压选择........................................31