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ID:32370697
大小:15.89 MB
页数:83页
时间:2019-02-03
《u形管式换热器管板研究与优化》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、万方数据青岛科技大学研究生学位沦文RESEARCHANDOPTIMIZ』妞IONOFAU.TUBEHEATEXCHANGERTUBEPLATEABSTRACTTubeandshellheatexchangerisonechemicalequipmentwhichiscommonlyusedinthepetrochemicalproduction.Thetubeplatewhichusuallyworksathightemperatureandpressureisoneimportantpartoftheexchanger,s9thatthecorrectanaly
2、sisofthetubeplate’Sstressstateisimportantforthesafetyandeconomyoftheheatexchanger.U—tubeheatexchangeristheinvestigatedsubjectinthisthesis,whichparticularstructurewasdesignedaccordingtoGB151。Thethicknessoftheheatexchanger’Stubeplateis57mm;thetubeplateisconnectedwiththepipeflangeandshel
3、lflangerespectively;thetubesisdistributedinthetubeplateinthelightoftriangle’Sshape;thedistanceoftwoadjacenttubeholeis25mm.Thetubeplate’S3dmodelwasestablishedusingSolidworkssoftwarefirstlyandimportedtotheANSYSsoftwarebecauseofitscomplexstructure.Thestressdistributionofthetubeplatewasan
4、alyzedunderthebothsidespressureinthispaperandlinearstressanalysiswasconductedatthepositionwherethestressisthemaximum.Atlast,membranestress,bendingstressandmembraneplusbendingstressarestudiedforsafetyassessmentbasedontheanalysisdesignstandardwhichiscalledJB4732.Afteranalyzingthetempera
5、turefieldoftubeplate,theresulttoldUSthatthedistributionoftemperaturealongthethicknessofthetubeplate.Coupledthermo-mechanicalanalysisofthetubeplatewasconductedbyusingANSYSsoftwareconsideringthattubeplateisworkingundertemperatureandpressureload.Thetubes’distributionintheshapeoftrianglea
6、ndsquarewasstudiedandconcludedthatthetemperaturestresshasthemostimportantinfluenceonthetubeplate’Sstress.Atthesalrletime,weknowthatthemostdangerousconditionofthetubeplateoccursatthemomentofshutdown.Inaddition,theorderofstartingupandshutdownWasarrangedreasonablyaccordingtotheresultsoft
7、heanalysis,whichcanavoidthedangeroussituation.111万方数据u形管式换热器管板研究.‘j优化TheanalysisofthetubeplateaccordingtoGB151isveryconservativeThemostdangerousconditionanalysisandbucklinganalysisofthethinnedtubeplatewereconductedaccordingtotheprincipleofoptimizationanalysis.whichstillmettherequireme
8、ntsgi
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