列管式换热器设计和实现 机械制造专业VIP免费

摘要摘要：列管式热交换器化学和石油工业中有着极为广泛的应用。根据该设计任务可以得知，此热交换器参数为煤油入口温度为140℃，进水的温度为30℃，处理能力为40,000吨/年的煤油冷却器。现假设总传热系数为35.6m2并且此热交换器是管程为10管长为6，实际传热面积为34.9m2的单壳程固定板式换热器，并且需要计算流体温度的差异。通过进行更为详细的核算与计算，计算并核算总传热系数，计算压降并需要均满足设计的要求。然后，参考该数据，并查阅相关的设计资料来确定圆筒的内径，头部，凸缘，管板的偏转器，管的张力的计算等。最后画出符合工程设计语言的设备总装图以及带有相应控制点的工艺流程图。关键词：列管式换热器、设计计算、尺寸选取、装置图ABSTRACTAbstract:Tubeheatexchangersarewidelyusedinchemicalandpetroleumindustries.Accordingtothedesigntask,thekeroseneinlettemperatureis140C,andthewaterinlettemperatureis30C.Akerosenecoolerwithprocessingcapacityiscalculated.Thetotalheattransfercoefficientisassumedtobe35.6.Theselectedheatexchangerisasingleshell-sidefixedtube-plateheatexchangerwithatubelengthof6metersandanactualheattransferareaof34.9.Throughfurthercalculation,thetotalheattransfercoefficientandpressuredroparecalculated,whichmeettherequirements.Thenthedimensionsofinnerdiameter,head,flange,tubesheetbaffleandtubepullforcearedeterminedbyconsultingdata.Finally,thegeneralassemblydrawingsoftheequipmentandtheprocessflowchartwithcontrolpointsinaccordancewiththeengineeringlanguagearedrawn.Keywords:tubularheatexchanger,designcalculation,sizeselection,devicediagram目录1绪论............................................................................................................................11.1选题意义及应用背景..........................................................................11.2国内外换热器研究的动态..................................................................22列管式换热器设计理论分析...................................................................................32.1列管式换热器的结构..........................................................................32.2列管式换热器的分类..........................................................................42.3管换热器设计考虑因素......................................................................43列管式换热器设计研究...........................................................................................63.1项目概述..............................................................................................63.2设计内容..............................................................................................63.3换热器结构的计算..............................................................................63.3.1热负荷Q计算.................................................................................63.3.2平均温差的计算..............................................................................63.3.3估算面积..........................................................................................73.3.4对流传热系数计算..........................................................................73.3.5总传热系数......................................................................................83.3.6压强降计算......................................................................................83.3.7其他结构计算..................................................................................94列管式换热器的具体计算........................................