如何区分(fen)可拆分(fen)螺旋(xuan)板(ban)换热器(qi)与(yu)不可拆分(fen)螺旋(xuan)板(ban)螺旋(xuan)板(ban)换热器(qi)?
螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi)分为可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)分螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi)和不可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)分螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi)。不可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)式(shi)螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi)的(de)(de)结构(gou)(gou)比较简单,螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)通(tong)道(dao)的(de)(de)两(liang)端全部焊(han)死(si)。可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)式(shi)螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi).除螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)通(tong)道(dao)两(liang)端的(de)(de)密封结构(gou)(gou)以外(wai),其(qi)他(ta)与不可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)式(shi)完全相同。为达(da)到(dao)机械清洗的(de)(de)目的(de)(de),可(ke)(ke)(ke)拆(chai)(chai)(chai)(chai)式(shi)螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)通(tong)道(dao),一(yi)端敞开,用(yong)(yong)平(ping)板(ban)(ban)(ban)(ban)(ban)盖(gai)和垫片(pian)密封,以防(fang)止流(liu)(liu)体(ti)(ti)漏到(dao)大气(qi)中(zhong)或同一(yi)通(tong)道(dao)内(nei)的(de)(de)流(liu)(liu)体(ti)(ti)短(duan)路。为了提高螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)的(de)(de)承压能(neng)力,在板(ban)(ban)(ban)(ban)(ban)与板(ban)(ban)(ban)(ban)(ban)之间用(yong)(yong)定距柱(zhu)支(zhi)撑(cheng)。筒(tong)体(ti)(ti)上(shang)的(de)(de)流(liu)(liu)体(ti)(ti)进(jin)出(chu)口(kou)有法向(xiang)(xiang)接(jie)(jie)管(guan)和切向(xiang)(xiang)接(jie)(jie)管(guan)两(liang)种(zhong)。中(zhong)国普遍使(shi)用(yong)(yong)切向(xiang)(xiang)接(jie)(jie)管(guan),它的(de)(de)流(liu)(liu)体(ti)(ti)阻力小,杂质(zhi)容易被冲(chong)出(chu)。使(shi)用(yong)(yong)回转支(zhi)座比较方便,可(ke)(ke)(ke)使(shi)换热(re)器(qi)(qi)立放或卧放。换热(re)的(de)(de)A、B流(liu)(liu)体(ti)(ti)分别(bie)流(liu)(liu)过螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)的(de)(de)两(liang)侧(ce),其(qi)中(zhong)的(de)(de)一(yi)种(zhong)流(liu)(liu)体(ti)(ti)沿螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)通(tong)道(dao)由(you)外(wai)向(xiang)(xiang)内(nei),至中(zhong)心(xin)出(chu)口(kou)流(liu)(liu)出(chu);而(er)另(ling)一(yi)种(zhong)流(liu)(liu)体(ti)(ti)则(ze)沿螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)通(tong)道(dao)由(you)中(zhong)心(xin)进(jin)口(kou),由(you)内(nei)向(xiang)(xiang)外(wai)流(liu)(liu)出(chu)。两(liang)种(zhong)流(liu)(liu)体(ti)(ti)呈纯逆流(liu)(liu)方式(shi)流(liu)(liu)动。螺(luo)(luo)(luo)(luo)(luo)(luo)旋(xuan)(xuan)板(ban)(ban)(ban)(ban)(ban)换热(re)器(qi)(qi)最(zui)大结构(gou)(gou)尺寸为:板(ban)(ban)(ban)(ban)(ban)宽1800毫米,外(wai)径1700毫米,传热(re)面积(ji)250平(ping)方米,板(ban)(ban)(ban)(ban)(ban)与板(ban)(ban)(ban)(ban)(ban)之间的(de)(de)距离20毫米。允许最(zui)高操作压力可(ke)(ke)(ke)达(da) 2.5兆帕。工作温(wen)度由(you)选用(yong)(yong)的(de)(de)材料(liao)而(er)定,材料(liao)大多用(yong)(yong)碳钢、不锈钢、铝、铜和钛(tai)。
螺旋板(ban)式换(huan)(huan)热(re)器通过(guo)多年实践使用(yong)证明(ming),确(que)是(shi)一种高效换(huan)(huan)热(re)设备,它适用(yong)于化学(xue)、石(shi)油、溶剂、医药(yao)、食品、轻工、纺织、冶金、轧钢、焦(jiao)化等(deng)行业中应用(yong)。换(huan)(huan)热(re)器吸(xi)取当代(dai)国(guo)际先进(jin)技术(shu),经独特(te)的优(you)化设计制(zhi)造的液(ye)-液(ye)、汽-水热(re)交换(huan)(huan)器。
不(bu)(bu)可(ke)拆式螺旋板换(huan)热(re)器是按(an)-机(ji)部(bu)标准JB/TQ724-89不(bu)(bu)可(ke)拆式螺旋板式换(huan)热(re)器形式,基本参数与尺寸的规定而进行(xing)设计的,它具(ju)备制造简单,成(cheng)本低,体积小和传热(re)性能(neng)好等优点,但也有(you)(you)它的不(bu)(bu)足(zu)之处,例如(ru)不(bu)(bu)能(neng)进行(xing)机(ji)械清洗,坏了不(bu)(bu)易检修等,选用者应(ying)根据工(gong)程的实际情况选取(qu)具(ju)体的设备使之最为有(you)(you)效。
可(ke)拆式螺(luo)旋板式换(huan)热(re)器结构原理与(yu)(yu)不(bu)可(ke)拆式换(huan)热(re)器基本相同,但其(qi)中通道(dao)可(ke)拆开清洗,两端加封(feng)头(tou)密封(feng)。特别适用有粘性、有沉淀(dian)液(ye)(ye)体的液(ye)(ye)与(yu)(yu)液(ye)(ye)交换(huan),以及气(qi)一液(ye)(ye),蒸汽冷凝。由于可(ke)拆式换(huan)热(re)器需增添封(feng)头(tou)、法兰等部件,设(she)备成本比(bi)不(bu)可(ke)拆式换(huan)热(re)器稍大。
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