在檢(jian)修(xiu)(xiu)維護換(huan)熱器(qi)(qi)汽(qi)(qi)(qi)包時(shi)發(fa)現(xian)汽(qi)(qi)(qi)包封頭泄(xie)漏，在汽(qi)(qi)(qi)包封頭的閥(fa)蓋(gai)角焊縫(feng)處出(chu)現(xian)裂(lie)紋，裂(lie)紋平行于(yu)焊縫(feng)。采(cai)用宏觀(guan)形貌分析(xi)、化(hua)學成分分析(xi)、金相(xiang)檢(jian)驗、顯微硬度(du)測(ce)定(ding)、能(neng)譜分析(xi)以及應力(li)分析(xi)等方法(fa)對泄(xie)漏處進行了分析(xi)。結果表明(ming)，汽(qi)(qi)(qi)包中水質含有較(jiao)高(gao)濃度(du)的堿(jian)性元素和氯、硫、氧(yang)等強腐(fu)蝕(shi)(shi)性元素，又在焊接(jie)殘余應力(li)的作用下發(fa)生應力(li)腐(fu)蝕(shi)(shi)開裂(lie)，最后導致汽(qi)(qi)(qi)包封頭產(chan)生泄(xie)漏。應力(li)腐(fu)蝕(shi)(shi)；沿晶(jing)；堿(jian)脆；軋制(zhi)帶狀組織(zhi)某化(hua)工廠換(huan)熱器(qi)(qi)汽(qi)(qi)(qi)包于(yu)1996年(nian)投入使用，于(yu)2005年(nian)上半年(nian)維護檢(jian)修(xiu)(xiu)時(shi)發(fa)現(xian)滲漏。經去除外面保溫材料(liao)后，發(fa)現(xian)汽(qi)(qi)(qi)包封頭的蓋(gai)板角焊縫(feng)位置出(chu)現(xian)裂(lie)紋，裂(lie)紋為(wei)穿透型，起(qi)源(yuan)于(yu)汽(qi)(qi)(qi)包封頭內表面，換(huan)熱器(qi)(qi)外形尺(chi)寸為(wei)1632mm9423mm，汽(qi)(qi)(qi)包封頭外形尺(chi)寸1632mm400mm，汽(qi)(qi)(qi)包封頭材料(liao)為(wei)16MnR鋼。

換熱器(qi)(qi)板片(pian)(pian)拆(chai)開前,應(ying)丈(zhang)量(liang)板束的壓緊長度(du)(du)尺(chi)度(du)(du),做好記錄(重裝時(shi)(shi)應(ying)按此尺(chi)度(du)(du)). b.密封(feng)(feng)墊片(pian)(pian)若粘在兩(liang)板片(pian)(pian)間的溝(gou)(gou)槽內,此刻(ke)需用(yong)(yong)螺絲刀小心腸將(jiang)(jiang)其分隔,螺絲刀應(ying)先從易剝開的部位插入,然后沿其周邊進行別離,切不可損壞換熱器(qi)(qi)板片(pian)(pian)和密封(feng)(feng)墊片(pian)(pian) 替換新密封(feng)(feng)墊片(pian)(pian)時(shi)(shi),需要(yao)用(yong)(yong)丙酮或(huo)其他酮類(lei)有(you)(you)機(ji)溶(rong)劑(ji),將(jiang)(jiang)密封(feng)(feng)墊片(pian)(pian)溝(gou)(gou)槽擦(ca)凈(jing).再用(yong)(yong)毛刷(shua)將(jiang)(jiang)合(he)成樹(shu)脂粘接(jie)劑(ji)均(jun)勻(yun)涂在溝(gou)(gou)槽里(li)..查看換熱器(qi)(qi)板片(pian)(pian)是(shi)否有(you)(you)穿(chuan)孔,一般用(yong)(yong)5倍的放大鏡,有(you)(you)時(shi)(shi)也可用(yong)(yong)燈火或(huo)火油(you)滲透法等逐片(pian)(pian)查看.e.假如發(fa)現(xian)介質出入口短(duan)管及(ji)通道有(you)(you)雜物堆積(ji),則闡明過(guo)濾器(qi)(qi)失效,應(ying)及(ji)時(shi)(shi)清(qing)洗.

在(zai)(zai)石(shi)油(you)(you)化工行(xing)(xing)業(ye)中，少不(bu)了(le)(le)換熱(re)(re)(re)器的應用，隨著(zhu)換熱(re)(re)(re)器穩定(ding)性(xing)和(he)工作效(xiao)率(lv)的提高(gao)(gao)(gao)，如今已成為非(fei)常常見(jian)的換熱(re)(re)(re)設施在(zai)(zai)石(shi)油(you)(you)行(xing)(xing)業(ye)設備(bei)投(tou)資(zi)上它所(suo)占的比例能夠(gou)達到三分之一以上。目前在(zai)(zai)石(shi)油(you)(you)化工行(xing)(xing)業(ye)關注(zhu)的問題(ti)就(jiu)是如何使(shi)提高(gao)(gao)(gao)換熱(re)(re)(re)器的傳熱(re)(re)(re)效(xiao)率(lv)，降低換熱(re)(re)(re)設施的投(tou)資(zi)，最終實現石(shi)油(you)(you)化工行(xing)(xing)業(ye)經(jing)濟效(xiao)益和(he)社會效(xiao)益的大化高(gao)(gao)(gao)效(xiao)板式(shi)換熱(re)(re)(re)器的優(you)勢(shi)在(zai)(zai)石(shi)油(you)(you)化工行(xing)(xing)業(ye)中，換熱(re)(re)(re)器的種類也是非(fei)常之多的，他(ta)們分別(bie)對于壓力(li)和(he)溫度有著(zhu)超高(gao)(gao)(gao)的要(yao)求。高(gao)(gao)(gao)效(xiao)板式(shi)換熱(re)(re)(re)器：能夠(gou)更(geng)好(hao)地應對較高(gao)(gao)(gao)的壓力(li)以及較高(gao)(gao)(gao)的溫度，具(ju)體(ti)來(lai)說，焊接式(shi)板式(shi)換熱(re)(re)(re)器具(ju)備(bei)較強(qiang)的便捷性(xing)、體(ti)積小、重量輕、存在(zai)(zai)著(zhu)良好(hao)的傳熱(re)(re)(re)性(xing)能、價格(ge)低廉(lian)。因此，在(zai)(zai)石(shi)油(you)(you)的生產過(guo)程(cheng)中得到了(le)(le)更(geng)好(hao)的應用。

1. 本系列熱交換器，熱媒既可單為蒸汽或高溫、低溫熱水，連云港半容積式換熱器廠家亦可交替使用蒸汽或高、低溫熱水，設計選用時請注明熱媒品種。2. 本系列熱交換器必須設置安全裝置。下列三種可任選其一：(1) 熱交換器頂部設置安全閥，安全閥的選擇、使用和安裝應符合勞動部頒發的《壓力容器安全技術監察規程》的規定。(2) 頂部裝設接通大氣的引出管（在有條件的場合）。(3)裝設膨脹水箱。3. 本系列熱交換器的支座按標準選用，三個支座中，一個固定支座，兩個為活動支座。活動支座的地腳螺栓采用雙螺母，半容積式換熱器第一(yi)個(ge)螺母(mu)在(zai)加(jia)一(yi)小墊片擰(ning)緊后倒退一(yi)圈，然后用(yong)(yong)第二個(ge)螺母(mu)鎖緊，以便支(zhi)座能在(zai)基礎上自由(you)滑動。4. 在(zai)使用(yong)(yong)中，應根據被加(jia)熱水(shui)(shui)水(shui)(shui)質與(yu)使用(yong)(yong)情(qing)況定期清理水(shui)(shui)垢，當被加(jia)熱水(shui)(shui)硬度較高時，宜(yi)采用(yong)(yong)適(shi)宜(yi)的軟化措施(shi)

內(nei)置(zhi)(zhi)多(duo)組浮動(dong)(dong)(dong)盤管(guan)(guan)，獨一無二的(de)”寶塔(ta)型(xing)”結構(gou),動(dong)(dong)(dong)態傳(chuan)(chuan)熱(re)(re)，換熱(re)(re)效率(lv)極(ji)高，相(xiang)同(tong)容(rong)(rong)(rong)積(ji)的(de)該產品(pin)的(de)換熱(re)(re)量分(fen)(fen)別相(xiang)當于傳(chuan)(chuan)統容(rong)(rong)(rong)積(ji)式換熱(re)(re)器(qi)的(de)6～9倍。 其中(zhong)半容(rong)(rong)(rong)積(ji)式的(de)”寶塔(ta)型(xing)”結構(gou)特(te)點(dian)，使得貯水(shui)(shui)部(bu)分(fen)(fen)貯有15～30分(fen)(fen)鐘的(de)熱(re)(re)水(shui)(shui)量，被加熱(re)(re)的(de)水(shui)(shui)頭(tou)損失≤0.25米，因此它(ta)在設置(zhi)(zhi)一般自動(dong)(dong)(dong)溫(wen)(wen)控閥的(de)條(tiao)件下，仍保持(chi)供水(shui)(shui)水(shui)(shui)壓、水(shui)(shui)溫(wen)(wen)平穩、安(an)全、節水(shui)(shui)、用水(shui)(shui)舒適(shi)之特(te)點(dian)。浮動(dong)(dong)(dong)盤管(guan)(guan)式換熱(re)(re)器(qi)采用什么中(zhong)置(zhi)(zhi)型(xing)浮動(dong)(dong)(dong)盤管(guan)(guan)型(xing)容(rong)(rong)(rong)積(ji)式換熱(re)(re)器(qi)可以提高容(rong)(rong)(rong)積(ji)利(li)用率(lv)。浮動(dong)(dong)(dong)盤管(guan)(guan)型(xing)換熱(re)(re)器(qi)的(de)換熱(re)(re)盤管(guan)(guan)距(ju)容(rong)(rong)(rong)器(qi)底可以近(jin)到100mm左右。其冷水(shui)(shui)區就很小，有效貯熱(re)(re)容(rong)(rong)(rong)積(ji)可達99%左右，大大提高了換熱(re)(re)器(qi)的(de)容(rong)(rong)(rong)積(ji)利(li)用率(lv)。本產品(pin)在用水(shui)(shui)量極(ji)小或不可用水(shui)(shui)時可借(jie)助(zhu)熱(re)(re)水(shui)(shui)管(guan)(guan)網上循環(huan)泵的(de)工作，維持(chi)罐內(nei)水(shui)(shui)溫(wen)(wen)，使換熱(re)(re)部(bu)分(fen)(fen)換熱(re)(re)時總處于被加熱(re)(re)水(shui)(shui)流動(dong)(dong)(dong)狀態，使換熱(re)(re)充(chong)分(fen)(fen)、節能。無論使用頻繁與否，均保量恒溫(wen)(wen)供水(shui)(shui)。