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机械网-流量为105t-h固定管板式换热器(含CAD零件装配图)--机械机电

发布时间:2021-10-20 16:56:49 阅读: 来源:真空过滤机厂家

流量为105t/h固定管板式换热器(含CAD零件装配图)(设计说明书13500字,CAD图纸8张)

摘要

管壳式换热器作为固定管板式换热器的1种具有代表性的结构,是当前利用较为广泛的1款换热器。这款换热器具有诸多特点:结构简易,紧凑,适用面广泛,安全系数高,选料面广泛,低本钱,换热表面清洗极方便。由于固定管板式换热器可以承受比较高的操作温度和压力,所以这类换热器占有极大优势在各类高压高温和大型换热器中。[1]

换热器简单说是具有不同温度的两种或两种以上流体之间传递热量的装备。在工业生产进程中,进行着各种不同的热交换进程,其主要作用是使热量由温度较高的流体向温度较低的流体传递,使流体温度到达工艺的指标,以满足生产进程的需要。另外,换热装备也是回收余热,废热,特别是低品位热能的有效装置。[2]

固定管板式换热器由管箱、壳体、管板、管子等零部件组成,其结构较紧凑,排管较多,在相同直径下面积较大,制造较简单。

固定管板式换热器的结构特点是在壳体中设置有管束,管束两端用焊接或胀接的方法将管子固定在管板上,两端管板直接和壳体焊接在1起,壳程的进出口管直接焊在壳体上,管板外圆周和封头法兰用螺栓紧固,管程的进出口管直接和封头焊在1起,管束内根据换热管的长度设置了若干块折流板。这类换热器管程可以用隔板分成任何程数。[3]

换热器设计的优劣终究要看是不是适用、经济、安全、运行灵活可靠、检验清算方便等等。1个传热效力高、紧凑、本钱低、安全可靠的换热器的产生,要求在设计时精心斟酌各种问题.准确的热力设计和计算,还要进行强度校核和符合要求的工艺制造水平。

为了依照要求设计固定管板式换热器的机械结构设计和绘图查阅GB151⑴999《管壳式换热器》和GB150⑵011《钢制压力容器》和GB和JB等标准。

主要的步骤有标准件的选用,各零件间连接结构的设计,零件材料的选择还有厚度的计算。其中包括了封头,筒体,管箱壁厚和管板的计算,稳定性校核和管子拉托力,支座,容器法兰,接收法兰,接收的选择和管板与壳体之间连接结构的设计,换热器与管板之间连接结构设计,折流板,开孔补强设计。随着经济的高速发展,我们便利的生活因有现有的科技成果有了质的奔腾,换热器的设计技术也在不停的更新换代,以后的设计前景和利用前景将会更加光明。

已知条件为:设计压力为管程1.1Mpa,壳程0.88Mpa,工作温度管程25℃,壳程175℃,设计温度管程180℃,壳程105℃,管程介质为1Mpa的水,壳程介质为0白癜风患者可以吃虾吗.8Mpa的水蒸气准分子激光治疗白癜风效果如何。根据给定条件所得传热面积为95m2。斟酌到介质特性等因素,采取φ25×2.5×3000的#20(材料)的无缝钢管,本设计采取410根换热管可满足换热量。设定拉杆数量为7根,计算得到筒体直径为DN=1000mm。完成了压降计算、强度计算、开孔补强、管箱短节壁厚计算等。在强度设计中,根据GB150进行筒体、封头强度设计及校核,根据流量进行入口接收、出口接收等管口直径的选择,根据等面积补强法进行开口补强计算。本设计选择管板延长兼做法兰,根据GB151中的弹性支持假定对管板进行设计和校核,管板与换热管的连接方式为焊接,拉杆与管板为罗纹连接结构。

本设计充分的利用材料,适用比较多的场合。410根换热管更加体现了换热的效力。在一样的换热器中此换热器10分的便宜、安全。所以该换热器在工厂中占有重要位置。[4]

关键词:换热器;结构设计;计算;校核

Abstract

Tubeshelltypeheatexchangerasfixedtubeplateheatexchanger,astructurewitharepresentative,isthemoreextensiveapplicationofaheatexchanger.Thisheatexchangerhasmanycharacteristics:simplestructure,compact,widerangeofapplication,highsafetyfactor,awiderangeofmaterials,lowcost,heatexchangersurfacecleaningisveryconvenient.Duetothefixedtubeplateheatexchangercanwithstandhigheroperatingtemperaturesandpressures,sothiskindofheatexchangeroccupiesagreatadvantageinallkindsofhightemperatureandhighpressureanlargeheatexchanger.

Heatexchangerisasimplewithdifferenttemperaturesoftwoormorefluidbetweenheattransferequipment.Inindustrialproductionprocess,differentkindsofheatexchangeprocess,itsmainfunctionistheheattransferbythehightemperatureofthefluidtofluidtemperatureislow,thefluidtemperaturetoprocessindicators,tomeettheneedsoftheproductionprocess.Inaddition,heatexchangerandrecoveryofwasteheat,wasteheat,especiallyaneffectivedeviceforlowgradeheatenergy.

Fixedtubesheetheatexchangercomposedofatubebox,shell,tubesheet,pipeandotherparts,thestructureiscompact,dischargetubeismore,inthesamediameterareaislarger,themanufactureissimple.

Fixedtubeisthestructuralcharacteristicsofplateheatexchangertubebundleisarrangedintheshell,weldingorexpansionjointmethodforbothendsofthepipebundlefixingpipesonthetubeplate,atbothendsofthetubeplatedirectlyandshellweldedtogether,theimportandexportoftheshellpipeisdirectlyweldedontheshell,plateoutercircumferenceandsealingflangewithbolts,theimportandexportofthetubesideofthetubeandheaddirectlyweldedtogether,inthetubebundleaccordingtothelengthoftheheatexchangetubeissetapluralityoffoldedplate.Theheatexchangertubesidecanbeusedinanywayisdividedintoseveralpartitions.

Fortheprosandconsofheatexchangerdesignultimatelydependsonwhethertheapplication,economic,security,reliableandflexibleoperation,maintenanceisconvenienttoclean,andsoon.Aheattransferefficiencyhigh,compact,lowcost,safeandreliableforheatexchangerproduced,requirementsindesigncarefullyconsiderallkindsofproblems.Accuratethermaldesignandcalculation,butalsoforstrengthcheckandconformtotherequirementsofmanufacturingprocesslevels.

Inordertoinaccordancewiththerequirementsofthedesignoffixedtubeplateheatexchanger,mechanicalstructuredesignanddrawingofaccesstoGB151⑴999<tubeshellheatexchangerheatexchanger>andGB150⑵011<steelpressurecontainer>andGBandJBstandard.

Standardpartsoftheselectionofthemainsteps,designofconnectingstructurebetweentheparts,partsandmaterialsselectionandcalculationofthickness.Includingthehead,cylinder,thecalculationoftankwallthicknessandtubeplatetube,stabilitycheckandpiperatoforce,support,pressurevesselflange,tookovertheflange,tookovertheselectionandthetubeplateandtheshellisconnectedbetweenthestructuredesign,heatexchangersandpipeplateisconnectedbetweenthestructuredesign,baffled,openingreinforcementdesign.

Withtherapiddevelopmentofeconomy,convenienceofourlifebecauseoftheexistingachievementofscienceandtechnologyhasbeenaqualitativeleap,forheatexchangerdesigntechnologyisalsoinconstantlyupgrading,thefutureprospectsofdesignandapplicationprospectswillbebrighter.

Short.rodmeetthechange(toconsider.incomeonthebasisoftheCheng,ChengCheng,pipe,tube,Cheng,asknowncondition:thedesignpressurefortubesideshellworkingtemperaturerangeshelldesigntemperaturerangeshelltubemediumwatershellmediumwatervapor.Thegivenconditionstheheattransferareaofthemediumcharacteristicfactors,thediameterof25x2.5x3000materials)seamlesssteeltube,thedesignoftheheatpipesheat.Setnumberis7,thecalculatedcylinderdiameterofthepressuredropcalculation,strengthcalculation,openingreinforcement,tubeboxwallthicknesscalculation.Inthestrengthdesign,accordingtocylinderheadstrengthofDesignandverification,accordingtotheflowofinletpipe,outletnozzleandorificediameterselection,basedonareamethodofreinforcementofringentstrengthcalculation.Thetubesheetextendedasflangeconcurrently,accordingtotheelasticsupporthypothesisoftubesheetdesignandverification,thetubeplateandtheheatexchangetubeandtheconnectionmodeofwelding,thepullrodandthetubeplateisthreadedconnectionstructure.

Thedesignoffulluseofmaterials,formoreoccasions.410roottubeshowsthattheheattransferefficiencyofheatexchange.Inthesameforheatexchangerintheheatexchangerisverycheap.Security.Therefore,thechangeheatexchangerinthefactoryoccupiesanimportantposition.

Keywords:heatexchanger;structuraldesign;calculation;check

目录

第1章前言1

1青少年有白癜风怎么办.1换热器的介绍1

1.2固定管板式换热器的特点1

1.3换热器的未来发展趋势2

第2章换热器传热工艺计算4

2.1原始数据4

2.2定性温度及肯定其物性参数4

2.3传热量与水蒸气流量计算5

2.4有效平均温差计算6

2.5管程换热系数计算7

2.6结构的初步设计8

2.7壳程换热系数计算9

2.8总传热系数计算10

2.9管壁温度计算11

2.10管程压力降计算11

2.11壳程压力降计算12

第3章固定管板式换热器结构设计计算15

3.1换热管材料及规格的选择和根数的肯定15

3.2布管方式的选择15

3.3筒体内径的肯定16

3.4筒体壁厚的肯定16

3.5筒体水压实验17

3.6封头厚度的肯定17

3.7管箱短节壁厚计算18

3.8管箱水压实验19

3.9管箱法兰的选择19

3.10管板尺寸的肯定及强度计算20

3.11是不是安装膨胀节的判定32

3.12防冲板尺寸的肯定32

3.13折流板尺寸的肯定32

3.14各管孔接收及其法兰的选择33

3.15开孔补强计算38

3.16支座的选择及应力校核40

3.16.1支座选择40

3.16.2鞍座的应力校核41

参考文献45

致谢46