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管(guan)(guan)殼(ke)式(shi)換熱器的(de)一種，屬石(shi)油化工設備，由管(guan)(guan)箱、殼(ke)體及管(guan)(guan)束(shu)等主(zhu)要部件組成(cheng)，因其換熱管(guan)(guan)成(cheng)U形(xing)而得(de)名。U 形(xing)管(guan)(guan)式(shi)換熱器僅有一個管(guan)(guan)板，管(guan)(guan)子兩端均(jun)固定于(yu)同一管(guan)(guan)板上，如圖(tu)1。

此(ci)類換熱(re)器(qi)的特點是管(guan)(guan)(guan)(guan)(guan)束(shu)可以自(zi)由伸縮(suo)，不會因管(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)之間的溫差(cha)而(er)產生熱(re)應力(li)，熱(re)補償性能(neng)(neng)好(hao)；管(guan)(guan)(guan)(guan)(guan)程(cheng)(cheng)為雙管(guan)(guan)(guan)(guan)(guan)程(cheng)(cheng)，流程(cheng)(cheng)較(jiao)(jiao)(jiao)長，流速(su)較(jiao)(jiao)(jiao)高，傳(chuan)熱(re)性能(neng)(neng)較(jiao)(jiao)(jiao)好(hao)；承壓能(neng)(neng)力(li)強；管(guan)(guan)(guan)(guan)(guan)束(shu)可從殼(ke)(ke)(ke)體(ti)內抽出(chu)，便于檢修(xiu)和清(qing)洗，且結(jie)(jie)構簡單，造價便宜。但管(guan)(guan)(guan)(guan)(guan)內清(qing)洗不便，管(guan)(guan)(guan)(guan)(guan)束(shu)中間部分的管(guan)(guan)(guan)(guan)(guan)子(zi)難以更換，又因最內層管(guan)(guan)(guan)(guan)(guan)子(zi)彎曲半徑不能(neng)(neng)太小(xiao)，在(zai)管(guan)(guan)(guan)(guan)(guan)板中心部分布管(guan)(guan)(guan)(guan)(guan)不緊(jin)湊，所以管(guan)(guan)(guan)(guan)(guan)子(zi)數不能(neng)(neng)太多，且管(guan)(guan)(guan)(guan)(guan)束(shu)中心部分存(cun)在(zai)間隙，使(shi)殼(ke)(ke)(ke)程(cheng)(cheng)流體(ti)易于短路而(er)影響(xiang)殼(ke)(ke)(ke)程(cheng)(cheng)換熱(re)。此(ci)外，為了(le)彌補彎管(guan)(guan)(guan)(guan)(guan)后管(guan)(guan)(guan)(guan)(guan)壁(bi)的減薄，直管(guan)(guan)(guan)(guan)(guan)部分需(xu)用壁(bi)較(jiao)(jiao)(jiao)厚的管(guan)(guan)(guan)(guan)(guan)子(zi)。這就影響(xiang)了(le)它的使(shi)用場合(he)，僅宜用于管(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)壁(bi)溫相差(cha)較(jiao)(jiao)(jiao)大，或殼(ke)(ke)(ke)程(cheng)(cheng)介質易結(jie)(jie)

垢而管程介質清潔(jie)及不易結垢，高溫、高壓、腐蝕性(xing)強的情形。