-PAGEII-摘要本设计是双管程固定管板式换热器，也是目前应用比较广泛的一种换热器主要完成的是水蒸气-水之间的热量交换固定。这类换热器具有结构简单、紧凑、可靠性高、适应性广的特点,并且生产成本低、选用的材料范围广、换热表面的清洗比较方便。固定管板式换热器能承受较高的操作压力和温度，因此在高温高压和大型换热器中，其占有绝对优势。本次设计的题目是固定管板式换热装置的设计，课题预期达到的目标为：换热器面积的计算（实际换热面积：160m2），管程壳程压力降的计算（小于等于0.9MPa），工艺结构尺寸的计算：管程数（2管程），换热管的确定（内径：19mm数量：450根），壳体内径（600mm），壳程数（1壳程）的计算，折流板的选型（形式：弓形折流板，数量：13）等。换热器的强度计算：对筒体、管箱厚度的计算和校核，对壳体及管箱各处开孔补强，对延长部分兼做法兰的计算及强度核算。经水压试验、压力校核后显示结果全部合格。换热器的结构设计：折流板、法兰（甲型平焊法兰）、换热管、支座（鞍式支座）、垫片（石棉橡胶板垫片）的规格及选型。完善设计图纸及设计说明书。关键词：换热器；工艺；结构；强度AbstractFixedtubeplateheatexchangerisatypicalstructureoftheshellandtubeheatexchangerandawiderangeofheatexchanger.Thistypeofheatexchangerhasthecharacteristicsofasimplestructure,compact,highreliabilityandwideadaptability,andlowcostoftheproduction,widechoiceofusedmaterials,moreconvenientofcleaningheatexchangerthesurface.Fixedtubeplateheatexchangercanwithstandsthehigheroperatingpressureandtemperature,soithastheabsoluteadvantageinthepossessionofhightemperatureandhighpressureheatexchangersandlarge.Thisdesigntopicisnaphthacondenserdesign,thegoalwhichthetopicanticipatedachieved.Inthisdesignthecraftdesignofheatexchanger,theheattransferareacomputation(actualheattransferarea:160㎡);thetubesidepressuredropcomputation(≤0.4MPa);thecraftstructuresizecomputation:numberoftubepasses(2tubepasses).Thenumberofheatexchangetube(insidediameter:19mm,number:900),theinsidediameterofshell(1000mm),numberofshellpasses(1shellpasses),thelectotypeofbaffleboard(form:segmentalbaffle,number:13)etc.Thestrengthcalculationofheatexchanger:thecomputationandcheckofcylinderthincknessandchannelthinckness,theshellandthereinforcementforopeningsupplementstheintensity,theextensionpartconcurrentlymakestheflangethecomputationandtheintensitycalculation.Examinatationpartcarriedonthehydraulicpressuretest,thepressureexaminationandsoon,inwhichallresultshasbeenallqualified.Thestructuraldesignoftheheatexchangerthespecificationandlectotypeofbaffleplate,flange(typeamanholewededflange),heatexchangetube、suppot(saddl