常常有许多传热在石油

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1、螺旋折流扳换热器常常有许多传热在石油，化工，电力，冶金，能源等工业部门所涉及的问题。Theshellandtubeheatexchangeristheheattransferequipmentmostwidelyusedinthecurrentindustrialproduction.在管壳式换热器是换热设备在目前最广泛用于工业生产。Comparedwithothertypes,itsmainadvantagesarethelargeheattransferareaintheunitvolumeandgoodheattransfereffect.与其他类型相比，它的主要优点

2、是大型热单位体积传热效果和良好的换热面积。Combinedwithasimplestructure,widerangeofmaterialsrequiredinmanufacturing,andgreateroperationflexibility,itismoreandmorewidelyusedinthechemicalengineeringfields.具有结构简单，制造所需的各种材料和更大的操作灵活性相结合，越来越广泛地在化工领域使用。Toincreasethespeedofshellfluidandintensifytheturbulentleveltoimpro

3、vetheshellfilmcoefficientofheattransfer,thetraversebaffleisusuallyinstalledintheshellandtubeheatexchanger.为了提高速度，加大壳程流体的湍流水平，以改善壳膜传热系数，横向挡板通常安装在管壳式换热器中。Themostcommononeissegmentalbaffle.最常见的是弓形折流。Fluidwindsintheshelloutfitwithsegmentalbaffleatthecontinuouslychangingspeedindifferentdirectio

4、ns,andiseasytoseparationespeciallyinthebaffleedge.流体与弓形折流壳装在不同的方向，以适应不断变化的速度，这样就很容易分离，特别是在挡板的边缘。Duetotheflowdeadzonebetweensegmentalbafflesandtheshell,fluidundergoesrepeatedmovementofcrossstreamsinthebaffles,resultinginthereductionofdrivingforceofheattransfer.由于流体弓形与壳体死区之间流动，流体经过反复十字运动经过溪流

5、挡板，使驱动力的传热减少。Forobtaininghigherheattransferperformance,onlytheplatespacingisreduced,whichisinevitablyaccompaniedbyahigherflowresistanceatthecostofhigherenergyconsumption.为了获得更高的传热性能，板间距仅减少，在流动阻力陪同下成本较高和更高的能源消耗的是不可避免的。Therefore,thetraditionalformchangeofbaffleisbadlyneeded.因此，改变传统形式的挡板，是迫切需

6、要的。Fig.图。1TheShellFlowDiagramofHeatExchangerwithSegmentalBaffles1，壳式换热器流程图弓形器Theheatexchangerwithhelicalbafflesbecomesanidealalternativebecauseofitsuniqueadvantages.螺旋隔板换热器之所以成为一个独特的优势，因为Itusesthecontinuoushelicalbackingplateinsupportofheatexchangetubetomaketheshellmediumdotheinclinedforwa

7、rdmovementalongthespiralchannelfromtheshellentrance.它使用的热交换管支撑连续螺旋垫板，使壳中做从壳沿螺旋通道入口处的斜向前运动。Sincethetraditionalhorizontalbafflingwayischangedtotheverticalhelicalbafflingmeans,theheatexchangerwithhelicalbafflesgreatlyenhancesitsheattransfereffectwhilereducingther