薄壁容器的应力分析.ppt

《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