2.冷凝器系列规格及图号见表15

表15浮头式冷凝器规格及

图2重叠式U形管式换热器三、基本参数1.公称直径DN钢管制壳体：325mm；钢板卷制壳体：400，500，600，700，800，900，1000，（1100），1200mm。注；括弧内的公称直径不推荐选用。2.公称压力PN1.0,1.6,2.5,4.0,6.4MPa。3.设计温度U形管式换热器的设计温度为200℃。允许升温降压使用，不同温度下允许最高工作压力见表1。表1不同温度下允许最高工作压力水压试验压力设计温度，公称压力（用5℃≤t<100℃200MPa250的水为介质）300350400MPa不同温度下允许的最高工作压力，MPa1. 01. 351. 00. 890. 810, 740. 681. 62.161. 61. 421. 311.181. 102. 53.132. 52. 222. 051. 851. 724. 0L4. 03.563. 282. 962. 766. 46. 45. 695. 244. 734. 414.换热器种类及规格4。1换热管有较高级冷拔换热管、普通级冷拔换热管（以I或Ⅱ区别)和螺纹换热管。采用I级或Ⅱ级换热管制造的换热器分别为I级或Ⅱ级换热器管束。一般应选用I级换热器管束，在无振动和工艺过程对壳程漏流要求不严的场合，可选用Ⅱ级换热器管束。4.2换热管规格常用碳素钢换热管外径和厚度：$19×2，$25×2.5mm。69

6.管程数N2,4。7.折流板（支持板）间距及块数见表4U形管式换热器的折流板均为单弓开结构。两管程为水平缺口，见图4a，四管程为竖直缺口，见图4b。图4弓形折流板结构简图表 4折流板间距及板数管长公称直径DN折流板间距为B(mm）时的折流板数注mmmm150200250300350450325,400163000500151260016325,40036500,6003527700186000800349003512261000,1100211715120021(20)注：1.（20)为PN=2.5，4.0MPa所用。8.管箱型式标准椭圆形封头管箱（简称封头管箱）9.换热管与管板的连接本系列推荐换热管与管板的连接方式为：当公称压力小于4.0MPa，温度小于等于300℃时，可采用强度胀接，或强度焊接，或强度焊加贴胀；当公称压力大于等于4.0MPa，或温度大于300C时，应采用强度胀加密封焊，或强度焊加贴胀。当用户有特殊要求需指定连接结构时，应在有关技术文件中注明，制造厂应按用户要求制造。71

表6工艺计算常用参数

续表6壳程流通面积S，m公称直径管程平均管径管程中心管换热弓形折流板DN通道面积折流板间距B，mmmmN排数管数缺口弓高mmcm2250mm150200300350450239120610660.06220.07510.08810.1140192502011525090.14880.17980.21080.272810002215969360.11400.13780.16150.209025245195844580.12600.15230.17850. 231043147613040.06790.08210.09620. 1245192852014126240.17280. 20880. 24480.3168110022472611400.12000.14500.17000.2200$252707125590.13800.16680. 19550. 253047177015640.07370.08900. 10440.1351$1932042417047530.17860.21580.25300.3274120022687213690.13200.15950. 18700.2420$25310218566720.16200.19580.22950. 2970注：表中壳程流通面积的计算公式为：S=(DN一Ndo)(B一8)式中：n一中心管排数；do一换热管外径mm；6—折流板厚度mm;B一折流板间距mm。八、安装尺寸U型管式换热器安装尺寸见图5表7。2管程4管程D± 6G±6B± 3F± 3支座底板安装尺寸图2b2个长圆孔图5U型管式换热器安装尺寸示意图75

建筑常用表格表7U型管换热器安装尺

表7U型管换热器安装尺寸

注：尺寸h、A可根据实际情况进行微调

续表7管程壳程四管管长封头压力压力DN8EFDhAPK1JxRS程B管箱MPaMPacL110014400400010005950805800100083020044082052. 51607025202512001440040001150595085585010809003005008482350200029504377500107005055004603301206020162012531063254400595073773502000295044396001070055555054042015031063254400595074392. 5700103254400700595060560064050015031074961. 68001240040008705950655650730590200370782616070252025900124004000870595070570081066020037078531000124004000100059507557509007402004408140110014400400010005950805800100083020044081871200144004000115059508558501080900300500846435020002900411932512635415410300200752806325440059007108350200029004161400126354554503702801206020162010028063254400590072333502000290044364. 04. 0500127605055004603301253306325440059007436350200029004489600127605555505404201503306325440059007489160702520257001432544007605900605600640500150330765280016400400092059006556507305902003907844—77—

续表7管程壳程四管封头管长压力压力DNEFDGhAPK1JxRS程B管箱MPamMPacL9001640040009205900705700810660200390791610001840040001100590075575090074020047582124. 061607025202511002040040001105900805800100083020047583051200224004000126059008558501080900300530856035020002900410832512635415410300200752806325440059007108350200029004144400106354554503702801206020162010028063254400590071443502000290044195001076050550046033012533063254400590074193502000290044834. 02.56001076055555054042015033063254400590074837001032544007605900605600640500150330751080012400400092059006556507305902003907832160702520259001240040009205900705810660200390786410001240040001100590075570090074020047582061100144004000110059008058001000830200475825512001440040001260590085585010809003005308542350200029004093325106354154103002007528063254400590070931. 612060202035020002900414440010635455450370280100280632544005900714478