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页数:38页
时间:2020-04-02
《薄壁容器的应力分析.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、第四章压力容器设计CHAPTER4DesignofPressureVesselMechanicalDesignofProcessEquipmentMechanicalDesignofProcessEquipmentOurtopiccoversthoseaspectsofthemechanicaldesignofchemicalplantthatareofparticularinteresttochemicalengineers.Themaintopicconsideredisthedesignofpressurevessels.Thedesignofstoragetank
2、s,centrifugesandheat-exchangertubesheetsarealsodiscussedbriefly.Thechemicalengineerwillnotusuallybecalledontoundertakethedetailedmechanicaldesignofapressurevessel.Vesseldesignisaspeciafisedsubject,andwillbecarriedoutbymechanicalengineerswhoareconversantwiththecurrentdesigncodesandpractice
3、s,andmethodsofstressanalysis.However,thechemicalengineerwillberesponsiblefordevelopingandspecifyingthebasicdesigninformationforaparticularvessel,andneedstohaveageneralappreciationofpressurevesseldesigntoworkeffectivelywiththespecialistdesigner.ThebasicdataneededThebasicdataneededbythespec
4、ialistdesignerwillbe:1.Vesselfunction.2.Processmaterialsandservices.3.Operatinganddesigntemperatureandpressure.4.Materialsofconstruction.5.Vesseldimensionsandorientation.6.Typeofvesselheadstobeused.7.Openingsandconnectionsrequired.8.Specificationofheatingandcoolingjacketsorcoils.9.Typeofa
5、gitator.10.Specificationofinternalfittings.Themisnostrictdefinitionofwhatconstitutesapressurevessel,butitisgenerallyacceptedthatanyclosedvesselover150mmdiametersubjecttoapressuredifferenceofmorethan1barshouldbedesignedasapressurevessel.Itisnotpossibletogiveacompletelycomprehensiveaccounto
6、fvesseldesigninonechapter.Thedesignmethodsanddatagivenshouldbesufficientforthepreliminarydesignofconventionalvessels.Sufficientforthechemicalengineertocheckthefeasibilityofaproposedequipmentdesign;toestimatethevesselcostforaneconomicanalysis;andtodeterminethevessel'sgeneralproportionsandw
7、eightforplantlayoutpurposes.Foramoredetailedaccountofpressurevesseldesignthereadershouldrefertootherusefulbooksonthemechanicaldesignofprocessequipment.Anelementaryunderstandingoftheprinciplesofthe“StrengthofMaterials”(MechanicsofSolids)willbeneededtofollowthischapte
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