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回(hui)用性能的(de)(de)檢驗和檢測。在(zai)懷(huai)疑有銹蝕的(de)(de)情(qing)況下對換(huan)熱(re)(re)(re)器(qi)(qi)(qi)及管道的(de)(de)壁厚進行檢查(cha);清(qing)除(chu)老化(hua)的(de)(de)密(mi)封(feng)(feng)件(jian),根據(ju)不(bu)同的(de)(de)污垢,采(cai)用酸堿進行化(hua)學清(qing)洗(xi),被清(qing)洗(xi)零部件(jian)的(de)(de)表面不(bu)會受(shou)到(dao)化(hua)學介質的(de)(de)腐(fu)蝕侵害;還要著重(zhong)(zhong)檢查(cha)密(mi)封(feng)(feng)槽的(de)(de)情(qing)況,必(bi)要時進行修整;五(wu)是(shi)對于粘(zhan)(zhan)接(jie)(jie)式密(mi)封(feng)(feng)墊(dian),將徹底清(qing)除(chu)殘留(liu)的(de)(de)物質,使(shi)用調和式粘(zhan)(zhan)接(jie)(jie)膠(jiao)重(zhong)(zhong)新粘(zhan)(zhan)接(jie)(jie),重(zhong)(zhong)新組(zu)合的(de)(de)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)片(pian)組(zu)在(zai)專用夾具中夾緊,使(shi)粘(zhan)(zhan)接(jie)(jie)劑固化(hua),在(zai)保溫爐中加(jia)熱(re)(re)(re)保溫,以(yi)(yi)達到(dao)粘(zhan)(zhan)接(jie)(jie)效果(guo)。如果(guo)沒有備用的(de)(de)密(mi)封(feng)(feng)墊(dian),必(bi)須(xu)(xu)從(cong)整個(ge)(ge)板式換(huan)熱(re)(re)(re)器(qi)(qi)(qi)組(zu)中取下受(shou)損密(mi)封(feng)(feng)墊(dian)兩側的(de)(de)散熱(re)(re)(re)片(pian),然后對剩(sheng)余散熱(re)(re)(re)片(pian)的(de)(de)密(mi)封(feng)(feng)墊(dian)結合面進行檢查(cha)。必(bi)須(xu)(xu)嚴格(ge)按照使(shi)用說(shuo)明書中的(de)(de)要求安裝剩(sheng)余的(de)(de)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)片(pian),為了保證剩(sheng)余的(de)(de)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)有足(zu)夠的(de)(de)應力(li)以(yi)(yi)抵抗(kang)負載,必(bi)須(xu)(xu)將原(yuan)(yuan)來(lai)各片(pian)允許承受(shou)的(de)(de)應力(li)乘以(yi)(yi)原(yuan)(yuan)來(lai)的(de)(de)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)片(pian)數(shu),所得的(de)(de)積再除(chu)以(yi)(yi)當前(qian)剩(sheng)余換(huan)熱(re)(re)(re)器(qi)(qi)(qi)的(de)(de)片(pian)數(shu),得到(dao)現在(zai)每個(ge)(ge)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)片(pian)必(bi)須(xu)(xu)承受(shou)的(de)(de)組(zu)裝應力(li)數(shu)值。
管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)式換(huan)(huan)熱(re)器(shell and tube heat exchanger)又稱列管(guan)(guan)(guan)(guan)(guan)(guan)式換(huan)(huan)熱(re)器。管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)式換(huan)(huan)熱(re)器是(shi)(shi)以(yi)封(feng)閉在(zai)殼(ke)體(ti)(ti)中(zhong)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)的(de)(de)(de)(de)壁(bi)面作為(wei)傳(chuan)(chuan)熱(re)面的(de)(de)(de)(de)間壁(bi)式換(huan)(huan)熱(re)器。這種換(huan)(huan)熱(re)器結構較簡(jian)單,操作可(ke)(ke)靠,可(ke)(ke)用(yong)(yong)各種結構材(cai)料(liao)(主要是(shi)(shi)金屬材(cai)料(liao))制造,能在(zai)高溫、高壓下使用(yong)(yong),是(shi)(shi)目前應用(yong)(yong)廣的(de)(de)(de)(de)類(lei)型。管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)式換(huan)(huan)熱(re)器是(shi)(shi)怎(zen)樣運(yun)行的(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)式換(huan)(huan)熱(re)器由殼(ke)體(ti)(ti)、傳(chuan)(chuan)熱(re)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)、管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)、折(zhe)流(liu)(liu)板(ban)(ban)(ban)(擋(dang)板(ban)(ban)(ban))和管(guan)(guan)(guan)(guan)(guan)(guan)箱等部件組成(cheng)。殼(ke)體(ti)(ti)多為(wei)圓筒形,內部裝有管(guan)(guan)(guan)(guan)(guan)(guan)束(shu),管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)兩(liang)端固定(ding)在(zai)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)上(shang)(shang)。進行換(huan)(huan)熱(re)的(de)(de)(de)(de)冷熱(re)兩(liang)種流(liu)(liu)體(ti)(ti),一種在(zai)管(guan)(guan)(guan)(guan)(guan)(guan)內流(liu)(liu)動(dong)(dong)(dong),稱為(wei)管(guan)(guan)(guan)(guan)(guan)(guan)程(cheng)(cheng)流(liu)(liu)體(ti)(ti);另一種在(zai)管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)流(liu)(liu)動(dong)(dong)(dong),稱為(wei)殼(ke)程(cheng)(cheng)流(liu)(liu)體(ti)(ti)。為(wei)提(ti)高管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)流(liu)(liu)體(ti)(ti)的(de)(de)(de)(de)傳(chuan)(chuan)熱(re)分系數(shu),通(tong)常在(zai)殼(ke)體(ti)(ti)內安裝若干擋(dang)板(ban)(ban)(ban)。擋(dang)板(ban)(ban)(ban)可(ke)(ke)提(ti)高殼(ke)程(cheng)(cheng)流(liu)(liu)體(ti)(ti)速度(du),迫(po)使流(liu)(liu)體(ti)(ti)按規定(ding)路程(cheng)(cheng)多次(ci)橫向通(tong)過(guo)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu),增強流(liu)(liu)體(ti)(ti)湍(tuan)流(liu)(liu)程(cheng)(cheng)度(du)。換(huan)(huan)熱(re)管(guan)(guan)(guan)(guan)(guan)(guan)在(zai)管(guan)(guan)(guan)(guan)(guan)(guan)板(ban)(ban)(ban)上(shang)(shang)可(ke)(ke)按等邊(bian)三角(jiao)形或正方形排列。等邊(bian)三角(jiao)形排列較緊湊,管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)流(liu)(liu)體(ti)(ti)湍(tuan)動(dong)(dong)(dong)程(cheng)(cheng)度(du)高,傳(chuan)(chuan)熱(re)分系數(shu)大;正方形排列則管(guan)(guan)(guan)(guan)(guan)(guan)外(wai)(wai)清洗方便,適(shi)用(yong)(yong)于(yu)易結垢(gou)的(de)(de)(de)(de)流(liu)(liu)體(ti)(ti)。
管殼式換(huan)(huan)熱器是(shi)石油(you)化工(gong)行(xing)(xing)業(ye)的重要設(she)備(bei),它的腐(fu)蝕及(ji)保(bao)(bao)護對(dui)設(she)備(bei)的長周(zhou)期運行(xing)(xing)有(you)著重要的意義;由(you)(you)于近年來加工(gong)原油(you)中(zhong)的硫、酸(suan)及(ji)雜質含量越來越高,對(dui)煉油(you)換(huan)(huan)熱設(she)備(bei)的防(fang)腐(fu)蝕性(xing)能(neng)及(ji)材(cai)料的選擇提出了(le)更(geng)高的要求(qiu)。文章(zhang)對(dui)采用(yong)專用(yong)涂料與犧牲陽(yang)極綜(zong)合保(bao)(bao)護法(fa)進行(xing)(xing)了(le)闡(chan)述,該方法(fa)工(gong)藝(yi)方案和(he)特點(dian)是(shi):管殼式換(huan)(huan)熱器的工(gong)藝(yi)方案和(he)特點(dian)是(shi)什么表面處理要徹底,合理選取保(bao)(bao)護電流密(mi)度,按設(she)計(ji)要求(qiu)確定陽(yang)極塊,控制好(hao)濕度和(he)溫度,涂料施工(gong)嚴格按照SHY-99涂料工(gong)藝(yi)進行(xing)(xing),確保(bao)(bao)綜(zong)合防(fang)護的效果。目前(qian)國內石油(you)、化纖、冶金(jin)、發電等企業(ye)的冷(leng)換(huan)(huan)器設(she)備(bei)經常由(you)(you)于水垢、腐(fu)蝕產物(wu)和(he)腐(fu)蝕物(wu)黏泥造成冷(leng)換(huan)(huan)器堵塞,致傳熱系(xi)(xi)數(shu)下降,是(shi)冷(leng)卻水系(xi)(xi)統(tong)中(zhong)常見的問題。由(you)(you)于碳酸(suan)鹽垢的導熱系(xi)(xi)數(shu)只有(you)碳鋼的1%左(zuo)右(you),直(zhi)接影響到了(le)換(huan)(huan)熱效率,增加了(le)系(xi)(xi)統(tong)的壓力降。
容(rong)積式(shi)和(he)半(ban)容(rong)積式(shi)的(de)(de)(de)(de)就差在(zai):半(ban)容(rong)式(shi)的(de)(de)(de)(de)換(huan)(huan)(huan)熱(re)(re)(re)(re)(re)管束(shu)帶筒體,而(er)容(rong)積式(shi)的(de)(de)(de)(de)不帶.容(rong)積式(shi)熱(re)(re)(re)(re)(re)交換(huan)(huan)(huan)器(qi)優點1、傳(chuan)熱(re)(re)(re)(re)(re)系數(shu)高(gao)(gao) 彈性管束(shu)管是用(yong)(yong)高(gao)(gao)導(dao)熱(re)(re)(re)(re)(re)系數(shu)的(de)(de)(de)(de)紫銅(tong)制成高(gao)(gao)效(xiao)傳(chuan)熱(re)(re)(re)(re)(re)元(yuan)件,加(jia)上(shang)合理的(de)(de)(de)(de)換(huan)(huan)(huan)熱(re)(re)(re)(re)(re)器(qi)內(nei)部結(jie)(jie)構,大(da)(da)大(da)(da)提(ti)高(gao)(gao)了換(huan)(huan)(huan)熱(re)(re)(re)(re)(re)器(qi)的(de)(de)(de)(de)性能(neng)。、不易(yi)(yi)結(jie)(jie)垢(gou)(gou) 由于換(huan)(huan)(huan)熱(re)(re)(re)(re)(re)管多采用(yong)(yong)紫銅(tong),而(er)且(qie)易(yi)(yi)形成湍流(liu)的(de)(de)(de)(de)流(liu)體對換(huan)(huan)(huan)熱(re)(re)(re)(re)(re)管壁(bi)面(mian)有較(jiao)強的(de)(de)(de)(de)沖刷作(zuo)用(yong)(yong),加(jia)上(shang)彈性管束(shu)本(ben)身(shen)有熱(re)(re)(re)(re)(re)補償能(neng)力,通過(guo)(guo)熱(re)(re)(re)(re)(re)脹冷(leng)(leng)(leng)(leng)縮(suo)有自潔作(zuo)用(yong)(yong),因此不易(yi)(yi)結(jie)(jie)垢(gou)(gou)。 3、無冷(leng)(leng)(leng)(leng)水(shui)(shui)區(qu),容(rong)積利用(yong)(yong)率高(gao)(gao) 加(jia)熱(re)(re)(re)(re)(re)罐底部的(de)(de)(de)(de)冷(leng)(leng)(leng)(leng)水(shui)(shui),在(zai)用(yong)(yong)水(shui)(shui)量(liang)低于額(e)定供(gong)水(shui)(shui)能(neng)力時(shi)(shi)(shi),逐(zhu)步(bu)將(jiang)罐內(nei)冷(leng)(leng)(leng)(leng)水(shui)(shui)全部加(jia)熱(re)(re)(re)(re)(re),此時(shi)(shi)(shi)無冷(leng)(leng)(leng)(leng)水(shui)(shui)區(qu),以維持熱(re)(re)(re)(re)(re)水(shui)(shui)的(de)(de)(de)(de)最大(da)(da)儲備量(liang)。當用(yong)(yong)水(shui)(shui)量(liang)大(da)(da)于額(e)定供(gong)水(shui)(shui)能(neng)力時(shi)(shi)(shi),罐內(nei)儲存的(de)(de)(de)(de)熱(re)(re)(re)(re)(re)水(shui)(shui)和(he)即(ji)時(shi)(shi)(shi)加(jia)熱(re)(re)(re)(re)(re)的(de)(de)(de)(de)熱(re)(re)(re)(re)(re)水(shui)(shui)同(tong)時(shi)(shi)(shi)向外(wai)供(gong)以度過(guo)(guo)用(yong)(yong)水(shui)(shui)高(gao)(gao)峰。當因事(shi)故(gu)或其他原因停供(gong)熱(re)(re)(re)(re)(re)媒時(shi)(shi)(shi),能(neng)最大(da)(da)限(xian)度地供(gong)應(ying)所出貯存的(de)(de)(de)(de)熱(re)(re)(re)(re)(re)水(shui)(shui)。
內置多組浮動盤管,獨一無二的”寶塔型”結構,動態傳熱,換熱效率極高,相同容積的該產品的換熱量分別相當于傳統容積式換熱器的6~9倍。 熱交換器價格其中半容積式的”寶塔型”結構特點,使得貯水部分貯有15~30分鐘的熱水量,被加熱的水頭損失≤0.25米,因此它在設置一般自動溫控閥的條件下,仍保持供水水壓、水溫平穩、安全、節水、用水舒適之特點。浮動盤管式換熱器采用什么中置型浮動盤管型容積式換熱器可以提高容積利用率。浮動盤管型換熱器的換熱盤管距容器底可以近到100mm左右。其冷水區就很小,江蘇最好熱交換器有效貯熱(re)容積可(ke)達(da)99%左(zuo)右,大大提高(gao)了(le)換(huan)熱(re)器的(de)容積利用率。本產(chan)品在用水量極小或不可(ke)用水時(shi)可(ke)借助熱(re)水管網上循環泵的(de)工作,維持(chi)罐內水溫,使(shi)換(huan)熱(re)部分換(huan)熱(re)時(shi)總處于被加熱(re)水流(liu)動狀(zhuang)態,使(shi)換(huan)熱(re)充分、節能。無(wu)論使(shi)用頻繁與否,均保量恒溫供水。