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管(guan)殼(ke)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)又稱列管(guan)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)。是(shi)以(yi)封閉在(zai)殼(ke)體(ti)中管(guan)束(shu)的(de)壁面(mian)(mian)作(zuo)為傳熱(re)面(mian)(mian)的(de)間壁式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)。這種換(huan)(huan)(huan)熱(re)器(qi)結(jie)構(gou)較簡(jian)單,操(cao)作(zuo)可靠,可用(yong)(yong)各種結(jie)構(gou)材(cai)料(liao)制造,能在(zai)高(gao)(gao)溫、高(gao)(gao)壓下使用(yong)(yong),是(shi)目前(qian)應用(yong)(yong)廣泛的(de)類(lei)型。在(zai)使用(yong)(yong)一段(duan)時間之后(hou)對管(guan)殼(ke)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)清(qing)洗(xi)非常的(de)重(zhong)要(yao),一般(ban)由于(yu)工業上(shang)使用(yong)(yong)長久管(guan)殼(ke)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)里面(mian)(mian)的(de)管(guan)道會(hui)出(chu)現各種灰塵(chen)和(he)沉淀物(wu)的(de)粘黏,導(dao)(dao)致換(huan)(huan)(huan)熱(re)效(xiao)率(lv)下降,變相提高(gao)(gao)生產(chan)成本(ben),嚴重(zhong)還會(hui)導(dao)(dao)致管(guan)殼(ke)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)使用(yong)(yong)壽命,造成損失。清(qing)洗(xi)有利于(yu)提高(gao)(gao)換(huan)(huan)(huan)熱(re)效(xiao)率(lv):管(guan)殼(ke)式(shi)(shi)換(huan)(huan)(huan)熱(re)器(qi)或管(guan)道運行一段(duan)時間后(hou),表面(mian)(mian)往往會(hui)結(jie)一層(ceng)污(wu)垢(gou),污(wu)垢(gou)一般(ban)較為致密堅硬,熱(re)導(dao)(dao)率(lv)很(hen)小(xiao)。污(wu)垢(gou)的(de)阻礙效(xiao)率(lv)大得驚人,里面(mian)(mian)的(de)有機離子、灰塵(chen)若無重(zhong)視(shi)可能導(dao)(dao)致不(bu)可避免的(de)其他(ta)問題(ti)的(de)產(chan)生。
熱(re)(re)(re)(re)容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)是一種新(xin)型高效換(huan)(huan)(huan)熱(re)(re)(re)(re)設備,它集波(bo)(bo)紋(wen)管(guan)(guan)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)和容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)的(de)有限(xian)于(yu)一體,采用薄壁不銹鋼波(bo)(bo)紋(wen)管(guan)(guan)作(zuo)為(wei)換(huan)(huan)(huan)熱(re)(re)(re)(re)元件。由(you)于(yu)波(bo)(bo)紋(wen)管(guan)(guan)獨特的(de)波(bo)(bo)形,實(shi)現(xian)了(le)管(guan)(guan)內外充(chong)分湍(tuan)流,打(da)破了(le)邊(bian)界層,降低了(le)管(guan)(guan)壁熱(re)(re)(re)(re)阻,提高了(le)管(guan)(guan)內的(de)給熱(re)(re)(re)(re)系(xi)數。波(bo)(bo)紋(wen)管(guan)(guan)即熱(re)(re)(re)(re)容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)在溫(wen)差應力的(de)作(zuo)用下(xia),波(bo)(bo)紋(wen)在軸向存在伸縮變形,使(shi)管(guan)(guan)壁不宜結垢,即使(shi)結垢,也(ye)會由(you)于(yu)管(guan)(guan)子的(de)伸縮而脫(tuo)落(luo)。因(yin)此,該系(xi)列容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)具有如下(xia)特點:1、換(huan)(huan)(huan)熱(re)(re)(re)(re)效率高。2、防垢、除垢能(neng)力強。3、儲水量大(da),出水溫(wen)度(du)恒定(ding)。4、出水能(neng)力是其他容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)的(de)3-5倍。5、體積(ji)(ji)(ji)(ji)小,占地面積(ji)(ji)(ji)(ji)小,可(ke)節(jie)省占地面積(ji)(ji)(ji)(ji)30%-80%。波(bo)(bo)紋(wen)管(guan)(guan)即熱(re)(re)(re)(re)容(rong)(rong)積(ji)(ji)(ji)(ji)式(shi)換(huan)(huan)(huan)熱(re)(re)(re)(re)器(qi)分為(wei)立式(shi)與臥式(shi)兩種系(xi)列,按照熱(re)(re)(re)(re)源介質(zhi)分為(wei)汽水型與水水型。
用戶要依據(ju)介(jie)質(zhi)(zhi)特性,然后從利于換(huan)熱(re)(re)(re),降低設備(bei)腐蝕(shi)(shi),減小壓力降和(he)清洗維護簡單(dan)這幾(ji)個方便來進(jin)選(xuan)擇(ze)。那么選(xuan)擇(ze)好了換(huan)熱(re)(re)(re)器倆種介(jie)質(zhi)(zhi)誰走管(guan)(guan)程(cheng)誰走殼(ke)程(cheng)又成了大(da)(da)家(jia)(jia)關注的重點,其實大(da)(da)部(bu)分的管(guan)(guan)殼(ke)式換(huan)熱(re)(re)(re)器上面都是(shi)會(hui)標出介(jie)質(zhi)(zhi)的方面和(he)那個管(guan)(guan)道走什(shen)么介(jie)質(zhi)(zhi),不(bu)過也有的廠家(jia)(jia)不(bu)會(hui)標出,所以(yi)(yi)小編就來給(gei)大(da)(da)家(jia)(jia)解答這個問題。可能(neng)(neng)會(hui)腐蝕(shi)(shi)管(guan)(guan)殼(ke)式換(huan)熱(re)(re)(re)器的流體(ti)經過管(guan)(guan)程(cheng),因其經過殼(ke)程(cheng)可能(neng)(neng)會(hui)使得換(huan)熱(re)(re)(re)設備(bei)的管(guan)(guan)程(cheng)與殼(ke)程(cheng)都被介(jie)質(zhi)(zhi)腐蝕(shi)(shi);包含有毒(du)物(wu)質(zhi)(zhi)的流體(ti)經過管(guan)(guan)程(cheng),這樣一來就不(bu)會(hui)往外(wai)滲漏。水壓較高的流體(ti)經過管(guan)(guan)程(cheng),可以(yi)(yi)防止(zhi)設備(bei)因為壓力過大(da)(da),所以(yi)(yi)去加厚管(guan)(guan)壁,造(zao)成材料浪費,資金投入增多(duo);
回用(yong)性能的檢驗和檢測。在懷(huai)疑有銹(xiu)蝕(shi)的情況(kuang)下(xia)(xia)對(dui)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)及(ji)管道的壁厚進行(xing)檢查;清(qing)(qing)除老化的密(mi)封(feng)(feng)件(jian),根(gen)據不同(tong)的污垢(gou),采用(yong)酸堿進行(xing)化學清(qing)(qing)洗(xi),被(bei)清(qing)(qing)洗(xi)零部件(jian)的表(biao)面(mian)不會受(shou)到化學介(jie)質(zhi)的腐(fu)蝕(shi)侵害;還(huan)要著重(zhong)檢查密(mi)封(feng)(feng)槽的情況(kuang),必(bi)要時進行(xing)修整(zheng);五(wu)是(shi)對(dui)于粘接(jie)(jie)式(shi)密(mi)封(feng)(feng)墊,將(jiang)徹底清(qing)(qing)除殘(can)留的物質(zhi),使(shi)用(yong)調和式(shi)粘接(jie)(jie)膠重(zhong)新(xin)(xin)粘接(jie)(jie),重(zhong)新(xin)(xin)組(zu)(zu)合(he)的換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)片(pian)組(zu)(zu)在專用(yong)夾具中(zhong)夾緊,使(shi)粘接(jie)(jie)劑固化,在保溫爐中(zhong)加(jia)熱(re)(re)(re)(re)保溫,以達到粘接(jie)(jie)效果。如果沒有備用(yong)的密(mi)封(feng)(feng)墊,必(bi)須從整(zheng)個(ge)板式(shi)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)組(zu)(zu)中(zhong)取下(xia)(xia)受(shou)損密(mi)封(feng)(feng)墊兩側的散熱(re)(re)(re)(re)片(pian),然后對(dui)剩(sheng)余(yu)散熱(re)(re)(re)(re)片(pian)的密(mi)封(feng)(feng)墊結合(he)面(mian)進行(xing)檢查。必(bi)須嚴格按照使(shi)用(yong)說明書(shu)中(zhong)的要求安裝(zhuang)剩(sheng)余(yu)的換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)片(pian),為了保證剩(sheng)余(yu)的換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)有足夠的應力以抵抗負(fu)載(zai),必(bi)須將(jiang)原(yuan)來(lai)各片(pian)允許(xu)承(cheng)受(shou)的應力乘(cheng)以原(yuan)來(lai)的換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)片(pian)數(shu),所得的積再(zai)除以當(dang)前剩(sheng)余(yu)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)的片(pian)數(shu),得到現在每個(ge)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)片(pian)必(bi)須承(cheng)受(shou)的組(zu)(zu)裝(zhuang)應力數(shu)值。
管殼式換熱器是石油化工行業的重要設備,天津換熱機組哪家好它的腐蝕及保護對設備的長周期運行有著重要的意義;由于近年來加工原油中的硫、酸及雜質含量越來越高,對煉油換熱設備的防腐蝕性能及材料的選擇提出了更高的要求。文章對采用專用涂料與犧牲陽極綜合保護法進行了闡述,該方法工藝方案和特點是:管殼式換熱器的工藝方案和特點是什么表面處理要徹底,合理選取保護電流密度,按設計要求確定陽極塊,控制好濕度和溫度,涂料施工嚴格按照SHY-99涂料工藝進行,確保綜合防護的效果。換熱機組目前國內(nei)石(shi)油、化纖、冶金(jin)、發電等企業的冷(leng)換(huan)(huan)器設備經常(chang)由于水垢(gou)、腐蝕(shi)產物和(he)腐蝕(shi)物黏泥造成冷(leng)換(huan)(huan)器堵塞,致(zhi)傳熱(re)系(xi)數下(xia)降,是冷(leng)卻(que)水系(xi)統(tong)中常(chang)見的問題。由于碳(tan)酸鹽垢(gou)的導熱(re)系(xi)數只有碳(tan)鋼(gang)的1%左右(you),直接影響(xiang)到了換(huan)(huan)熱(re)效率(lv),增加了系(xi)統(tong)的壓力降。
封(feng)閉(bi)(bi)(bi)式(shi)(shi)(shi)冷(leng)卻(que)(que)塔(ta)(ta)和管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)同(tong)屬于水換(huan)熱(re)(re)(re)冷(leng)卻(que)(que)裝置,有(you)著本(ben)質的區(qu)別。閉(bi)(bi)(bi)式(shi)(shi)(shi)冷(leng)卻(que)(que)塔(ta)(ta)除了熱(re)(re)(re)交換(huan)的過(guo)程(cheng),可以(yi)直(zhi)接蒸發吸熱(re)(re)(re),將熱(re)(re)(re)量排(pai)(pai)走,而(er)管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)只能換(huan)熱(re)(re)(re),使用過(guo)程(cheng)中還(huan)需(xu)要(yao)另外的設(she)備(bei)進行(xing)排(pai)(pai)熱(re)(re)(re)。今(jin)天小衛給大家詳(xiang)細介(jie)紹(shao)一下管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)和閉(bi)(bi)(bi)式(shi)(shi)(shi)冷(leng)卻(que)(que)塔(ta)(ta)有(you)著哪些不同(tong)之處,在(zai)現實使用過(guo)程(cheng)中閉(bi)(bi)(bi)式(shi)(shi)(shi)冷(leng)卻(que)(que)塔(ta)(ta)替代管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)已成趨一、封(feng)閉(bi)(bi)(bi)式(shi)(shi)(shi)冷(leng)卻(que)(que)塔(ta)(ta)管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)概念(nian)及結(jie)構管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)(shell and tube heat exchanger)又(you)稱列管(guan)(guan)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)。是以(yi)封(feng)閉(bi)(bi)(bi)在(zai)殼(ke)(ke)(ke)體中管(guan)(guan)束的壁面作為傳(chuan)熱(re)(re)(re)面的間壁式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)。這種換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)結(jie)構較簡(jian)單,操作 ,可用各種結(jie)構材(cai)料(liao)(主(zhu)要(yao)是金(jin)屬材(cai)料(liao))制(zhi)造,能在(zai)高管(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)由殼(ke)(ke)(ke)體、傳(chuan)熱(re)(re)(re)管(guan)(guan)束、管(guan)(guan)板(ban)、折流板(ban)(擋板(ban))和管(guan)(guan)箱等部(bu)件(jian)組(zu)成。殼(ke)(ke)(ke)體多為圓(yuan)筒形,內(nei)部(bu)裝有(you)管(guan)(guan)束,管(guan)(guan)束兩端固定在(zai)管(guan)(guan)板(ban)上。