循环水冷却器设计

循环水冷却器设计[摘要]：传热过程是化工生产过程中存在的及其普遍的过程，实现这一过程的换热设备种类繁多，是不可缺少的工艺设备之一。由于使用条件不同，换热设备可以有各种各样的型式和结构。其中以管壳式换热器应用更为广泛。现在，它被当作一种传统的标准换热设备在很多工业部门中大量使用，尤其在化工、石油、能源设备等部门所使用的换热设备中仍处于主导地位。循环水冷却器是换热设备中的一种，是企业生产中的重要设备。它的作用是通过温度相对较低的水来把其他设备所产生的热量带走，从而使设备部分的温度保持在一个生产所需要的水平，使设备正常工作。因此，循环水冷却器的设计对企业的生产是很重要的，它很可能影响企业的经济损失，对其的设计具有很强的实际意义。本设计是对管壳式换热器中固定管板式换热器的研究。固定管板式换热器属于管壳式换热器的一种，是利用间壁使高温流体和低温流体进行对流传热从而实现物料间的热量传递。在本设计中以GB150-2011《压力容器》、GB151-1999《管壳式换热器》等标准和《固定式压力容器安全技术监察规程》为依据，并参考《换热器设计手册》，首先通过方案的论证，确定物料的物性参数，再结合工作条件，选定换热器的形式。根据设计任务，完成对换热面积、总换热系数等工艺参数的确定，同时进行换热面积、壁温和压力降的核算。再根据工艺参数进行机械设计，机械设计主要包括对筒体、管箱、管板、折流板、封头、换热管、鞍座及其它零部件，如拉杆、定距管等的计算和选型等，并进行必要的强度核算，最后运用AutoCAD绘制固定管板式换热器的装配图及零部件图，并编写说明书。[关键词]：换热器、换热面积、管板、换热管。Circulatingwatercoolerdesign[Abstract]:Theheattransferprocessisthechemicalproductionprocessofexistenceanditsgeneralprocess,heatequipmentforthisprocessisvarious,isoneoftheindispensableprocessequipment.Duetotheuseofdifferentconditions,heatexchangeequipmentcanhavevarioustypesandstructure.Thetubularheatexchangerappliedmorewidely.Now,itisregardedasakindoftraditionalstandardheatexchangeequipmentwidelyusedinmanyindustrialdepartments,especiallyusedinchemical,petroleum,energyequipmentdepartment.Heattransferequipmentisstillinadominantposition.Circulatingwatercoolerisachangeofthermalequipment,istheimportantequipmentintheproduction.Itistheroleoftherelativelylowtemperaturewatertotakeawaytheheatgeneratedbytheotherdevice,soastomakepartofthetemperatureismaintainedattherequiredaproductionlevel,sothatthenormaloperationoftheequipment.Therefore,theproductiondesignofcirculatingwatercoolerofenterpriseisveryimportant,itislikelytoaffecttheeconomiclossesofenterprises,whichisofgreatpracticalsignificancetothedesign.Thisdesignisforthestudyoffixedtubeplateheatexchangeronthetubeshelltype.Afixedtubeplateheatexchanger,belongingtotheshellandtubeheatexchanger,istheuseofthehightemperaturefluidandwalltemperaturefluidofconvectiveheattransferandheattransferbetweenthematerial.Inthisdesign,theGB150-2011,GB151-1999pressurevesselshellandtubetypeheatexchangerstandardsandfixedpressurevesselsafetytechnologysupervisionregulationasthebasis,andwithreferencetoDesignHandbookheatexchanger,theschemeisdemonstrated,todeterminethephysicalmaterialparameters,combinedwiththeworkingconditions,selectthetypeofheatexchanger.Accordingtothedesigntask,determinetheprocessparametersontheheattransferarea,thetotalheattransfercoefficient,andheattransferarea,walltemperatureandpressuredropcalculation.Thenthemechanicaldesignbasedonprocessparameters,mechanicaldesignincludingthetube,tubebox,tubeplate,baffle,head,tubeheatexchanger,saddleandotherparts,suchasthebar,fixedpitchpipecalculationandselection,andcalculatedthestrengthnecessary,finallyusingAutoCADdrawingfixedtubeplateheatexchangertheassemblydiagramandpartsdiagram,andwritingaspecification.[keyword]:heatexchanger,theheattransferarea,tubesheet,heatexchangetube.目录1概述..........................................................................................................................11.1选题的根据和意义...........................................................................................11.2本设计的目的和要求.......................................................................................21.3国内外现状和发展趋势...................................................................................22管壳式换热器的分类和选型.................................................................................32.1分类...................................................................................................................32.2选型...................................................................................................................63换热器的工艺设计..................................................................................................73.1工艺计算...........................................................................................................73.1.1流径选择....................................................................................................73.1.2确定物性参数............................................................................................73.1.3热负荷及冷却水用量计算........................................................................83.1.4传热平均温度差的计算............................................................................83.1.5计算传热面积............................................................................................93.1.6计算工艺结构尺寸....................................................................................93.2换热器核算.....................................................................................................153.2.1传热能力核算..........................................................................................153.2.2壁温核算..................................................................................................183.2.3换热器内流体的流动阻力......................................................................193.3换热器主要结构尺寸和计算结果.................................................................224换热器的机械设计......................................