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管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)是(shi)把換(huan)(huan)(huan)熱(re)(re)(re)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)與(yu)(yu)管(guan)(guan)(guan)(guan)(guan)(guan)板連接后,再用筒(tong)體(ti)(ti)與(yu)(yu)管(guan)(guan)(guan)(guan)(guan)(guan)箱包(bao)起(qi)來,形成兩個獨立的(de)空間(jian)。管(guan)(guan)(guan)(guan)(guan)(guan)內的(de)通(tong)道(dao)及與(yu)(yu)其相(xiang)貫通(tong)的(de)管(guan)(guan)(guan)(guan)(guan)(guan)箱稱為(wei)管(guan)(guan)(guan)(guan)(guan)(guan)程(cheng);管(guan)(guan)(guan)(guan)(guan)(guan)外的(de)通(tong)道(dao)及與(yu)(yu)其相(xiang)貫通(tong)的(de)部分稱為(wei)殼(ke)(ke)(ke)程(cheng)。一種流(liu)(liu)體(ti)(ti)在(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)內流(liu)(liu)動,而另一種流(liu)(liu)體(ti)(ti)在(zai)(zai)(zai)殼(ke)(ke)(ke)與(yu)(yu)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)之(zhi)間(jian)從管(guan)(guan)(guan)(guan)(guan)(guan)外表面流(liu)(liu)過(guo),為(wei)了保證殼(ke)(ke)(ke)程(cheng)流(liu)(liu)體(ti)(ti)能(neng)夠橫向流(liu)(liu)過(guo)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu),以(yi)形成較(jiao)高的(de)傳熱(re)(re)(re)速率,在(zai)(zai)(zai)外殼(ke)(ke)(ke)上(shang)裝有許多(duo)擋板。管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)腐蝕(shi)和磨(mo)蝕(shi)失(shi)效(xiao)(xiao)的(de)主要原(yuan)因管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)在(zai)(zai)(zai)使用的(de)過(guo)程(cheng)中(zhong)可能(neng)會發生失(shi)效(xiao)(xiao)的(de)情(qing)況(kuang),常見(jian)的(de)失(shi)效(xiao)(xiao)是(shi)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)失(shi)效(xiao)(xiao)的(de)情(qing)況(kuang)管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)腐蝕(shi)和磨(mo)蝕(shi)失(shi)效(xiao)(xiao)、傳熱(re)(re)(re)能(neng)力(li)下降、管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)泄漏.以(yi)下是(shi)關(guan)于管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)官術失(shi)效(xiao)(xiao)的(de)具體(ti)(ti)介紹。管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)出現管(guan)(guan)(guan)(guan)(guan)(guan)束(shu)失(shi)效(xiao)(xiao)的(de)情(qing)況(kuang)有哪(na)些?管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)的(de)失(shi)效(xiao)(xiao)大多(duo)數是(shi)由腐蝕(shi)引起(qi)的(de)。最常見(jian)的(de)管(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)(shi)(shi)換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)腐蝕(shi)部位是(shi)換(huan)(huan)(huan)熱(re)(re)(re)管(guan)(guan)(guan)(guan)(guan)(guan),然后依次是(shi)管(guan)(guan)(guan)(guan)(guan)(guan)板、換(huan)(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)封頭 及小直徑的(de)接管(guan)(guan)(guan)(guan)(guan)(guan)。
管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)又(you)稱(cheng)(cheng)列(lie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)、列(lie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)、殼(ke)(ke)(ke)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)、殼(ke)(ke)(ke)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi),關于管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)名稱(cheng)(cheng)各種叫法(fa)都有,比較常見說(shuo)法(fa)就是管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)和(he)列(lie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)。管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)組成及優(you)點: 管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)式(shi)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)主要有殼(ke)(ke)(ke)體(ti)、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)束(shu)、折(zhe)流板、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)板和(he)封頭等部分組成,殼(ke)(ke)(ke)體(ti)多呈圓形(xing),內(nei)(nei)部裝(zhuang)有平行管(guan)(guan)(guan)(guan)(guan)(guan)(guan)束(shu)或者(zhe)螺旋管(guan)(guan)(guan)(guan)(guan)(guan)(guan),管(guan)(guan)(guan)(guan)(guan)(guan)(guan)束(shu)安裝(zhuang)在(zai)(zai)(zai)殼(ke)(ke)(ke)體(ti)內(nei)(nei),兩(liang)(liang)端固定于管(guan)(guan)(guan)(guan)(guan)(guan)(guan)板上,封頭用螺栓與殼(ke)(ke)(ke)體(ti)兩(liang)(liang)端的(de)法(fa)蘭相連。管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)內(nei)(nei)進(jin)行換(huan)(huan)熱(re)(re)(re)的(de)兩(liang)(liang)種流體(ti)在(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)殼(ke)(ke)(ke)換(huan)(huan)熱(re)(re)(re)器(qi)(qi)(qi)(qi)內(nei)(nei)進(jin)行換(huan)(huan)熱(re)(re)(re)的(de)兩(liang)(liang)種流體(ti):(1)一(yi)(yi)種在(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)內(nei)(nei)流動(dong),其行程(cheng)稱(cheng)(cheng)為管(guan)(guan)(guan)(guan)(guan)(guan)(guan)程(cheng);(2)一(yi)(yi)種在(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)外流動(dong),其行程(cheng)稱(cheng)(cheng)為殼(ke)(ke)(ke)程(cheng);(3)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)束(shu)的(de)壁面即為傳熱(re)(re)(re)面。管(guan)(guan)(guan)(guan)(guan)(guan)(guan)子的(de)型號(hao)不一(yi)(yi),過程(cheng)一(yi)(yi)般(ban)為直徑16mm20mm或者(zhe)25mm三個型號(hao);4)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)壁厚度(du)一(yi)(yi)般(ban)為1mm,1.5mm,2mm以及2.5mm。
隨著社會不斷的進展,容積式換熱器逐漸走進我們的生活,它是不僅可以進行熱量交換,熱水機組價格而且使用年限較長,通常適用于工業及民用建筑的熱水供應系統,關于它的知識還有哪些是我們不知道的呢?下面就和小編一起看看吧。以下關于“容積式換熱器發生問題的原因及其產品知識的相關說明”的介紹。一、產品簡介:與傳統固定盤管相比較,浮動盤管能上下輕微浮動,產生高頻振動,形成良好紊流傳熱狀態,并且它能借助通過高溫熱媒的薄壁銅管管壁與管外壁結垢層膨脹量的差異,在一定條件下,使水垢自動脫落。供應熱水機組通用換熱(re)器一般需要配置水(shui)(shui)(shui)水(shui)(shui)(shui)熱(re)交換器來(lai)降低蒸汽(qi)凝結水(shui)(shui)(shui)溫度以便(bian)回(hui)用,而此類(lei)節能型熱(re)交換器凝結水(shui)(shui)(shui)出水(shui)(shui)(shui)溫度在45攝適度左右,可直接回(hui)鍋爐房重(zhong)復使用。
傳(chuan)(chuan)熱(re)(re)效(xiao)率(lv)高(性(xing)能(neng)好)一般認為螺(luo)(luo)(luo)(luo)旋板式換(huan)熱(re)(re)器的(de)(de)傳(chuan)(chuan)熱(re)(re)效(xiao)率(lv)為列管(guan)式換(huan)熱(re)(re)器的(de)(de)1-3倍.等截(jie)面(mian)單通道(dao)不(bu)存(cun)在(zai)流動(dong)(dong)(dong)死區,定(ding)距柱及螺(luo)(luo)(luo)(luo)旋通道(dao)對流動(dong)(dong)(dong)的(de)(de)擾動(dong)(dong)(dong)降低了流體的(de)(de)臨界(jie)雷諾數(shu),水水換(huan)熱(re)(re)時(shi)螺(luo)(luo)(luo)(luo)旋板式換(huan)熱(re)(re)器的(de)(de)傳(chuan)(chuan)熱(re)(re)系數(shu)大(da)可(ke)(ke)達(da)3000W/(㎡.K). 有效(xiao)回(hui)(hui)收低溫(wen)(wen)熱(re)(re)能(neng)螺(luo)(luo)(luo)(luo)旋板式換(huan)熱(re)(re)器由兩張卷制(zhi)而成,形成了兩個(ge)均勻的(de)(de)螺(luo)(luo)(luo)(luo)旋通道(dao),兩種傳(chuan)(chuan)熱(re)(re)介質可(ke)(ke)進行全逆流流動(dong)(dong)(dong),大(da)大(da)增強了換(huan)熱(re)(re)效(xiao)果,即使兩種小溫(wen)(wen)差(cha)介質 換(huan)熱(re)(re)器盤管(guan)哪家好,也能(neng)達(da)到理想的(de)(de)換(huan)熱(re)(re)效(xiao)果,進行余熱(re)(re)回(hui)(hui)收,充分利用(yong)(yong)低溫(wen)(wen)熱(re)(re)能(neng).運(yun)行可(ke)(ke)靠性(xing)強不(bu)可(ke)(ke)拆式螺(luo)(luo)(luo)(luo)旋板式換(huan)熱(re)(re)器螺(luo)(luo)(luo)(luo)旋通道(dao)的(de)(de)端面(mian)采用(yong)(yong)焊接密封(feng),因(yin)而具有較高的(de)(de)密封(feng)性(xing),保證兩種工作介質不(bu)混合.阻力(li)小在(zai)殼體上的(de)(de)接管(guan)采用(yong)(yong)切向結構(gou),局部阻力(li)小,由于(yu)螺(luo)(luo)(luo)(luo)旋通道(dao)的(de)(de)曲率(lv)是均勻的(de)(de),液體在(zai)設備內流動(dong)(dong)(dong)沒有大(da)的(de)(de)轉向,總的(de)(de)阻力(li)小,因(yin)而可(ke)(ke)提高設計流速使之具備較高的(de)(de)傳(chuan)(chuan)熱(re)(re)能(neng)力(li).
在檢(jian)修(xiu)(xiu)維護(hu)換熱器(qi)汽(qi)(qi)包(bao)時發(fa)(fa)現(xian)汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)泄漏(lou)(lou),在汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)的(de)閥蓋(gai)角焊縫(feng)處(chu)出(chu)現(xian)裂紋,裂紋平行(xing)于焊縫(feng)。采用宏觀形(xing)貌分(fen)析(xi)(xi)、化學(xue)成(cheng)分(fen)分(fen)析(xi)(xi)、金相檢(jian)驗、顯(xian)微硬度測(ce)定、能譜分(fen)析(xi)(xi)以及應(ying)力(li)分(fen)析(xi)(xi)等(deng)方(fang)法對泄漏(lou)(lou)處(chu)進行(xing)了(le)分(fen)析(xi)(xi)。結(jie)果表明(ming),汽(qi)(qi)包(bao)中(zhong)水質(zhi)含有較高濃度的(de)堿性元素和(he)氯、硫、氧(yang)等(deng)強腐(fu)(fu)(fu)蝕性元素,又(you)在焊接(jie)殘余應(ying)力(li)的(de)作用下發(fa)(fa)生(sheng)應(ying)力(li)腐(fu)(fu)(fu)蝕開裂,最(zui)后(hou)導致汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)產(chan)生(sheng)泄漏(lou)(lou)。應(ying)力(li)腐(fu)(fu)(fu)蝕;沿晶;堿脆(cui);軋制帶狀組(zu)織某化工(gong)廠換熱器(qi)汽(qi)(qi)包(bao)于1996年(nian)投入(ru)使用,于2005年(nian)上半年(nian)維護(hu)檢(jian)修(xiu)(xiu)時發(fa)(fa)現(xian)滲漏(lou)(lou)。經去除外(wai)面保溫材(cai)料(liao)后(hou),發(fa)(fa)現(xian)汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)的(de)蓋(gai)板角焊縫(feng)位置出(chu)現(xian)裂紋,裂紋為(wei)(wei)穿透(tou)型,起源于汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)內表面,換熱器(qi)外(wai)形(xing)尺寸為(wei)(wei)1632mm9423mm,汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)外(wai)形(xing)尺寸1632mm400mm,汽(qi)(qi)包(bao)封(feng)頭(tou)(tou)(tou)材(cai)料(liao)為(wei)(wei)16MnR鋼。
1.主(zhu)換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)熱(re)(re)端(duan)溫差(cha)(cha)(cha)偏大(da)景(jing)象某廠12000m3爪空(kong)(kong)(kong)分(fen)(fen)設(she)備接納分(fen)(fen)子篩(shai)吸(xi)(xi)附凈(jing)化、增壓透平(ping)膨大(da)、規(gui)整填料上(shang)塔及全精餾(liu)無氫(qing)制氮(dan)外(wai)壓 縮(suo)流(liu)(liu)(liu)程。自空(kong)(kong)(kong)分(fen)(fen)設(she)備開車(che)以來(lai),用戶不斷反應主(zhu)換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)熱(re)(re)端(duan)溫差(cha)(cha)(cha)過大(da),此(ci)中(zhong)一(yi)組換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)有7℃一(yi)8℃的(de)(de)溫 差(cha)(cha)(cha)。通過種(zhong)種(zhong)調(diao)理(li)花(hua)招,液體(ti)產(chan)量(liang)仍達不到條約要求的(de)(de)計(ji)劃(hua)值。檢查空(kong)(kong)(kong)分(fen)(fen)設(she)備流(liu)(liu)(liu)程圖和(he)精餾(liu)塔總圖發明,6臺主(zhu)換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)(El一(yi)E6)分(fen)(fen)兩組散布(bu),分(fen)(fen)子篩(shai)吸(xi)(xi)附器(qi)(qi)(qi)出口空(kong)(kong)(kong) 氣(qi)(qi)通過正(zheng)流(liu)(liu)(liu)空(kong)(kong)(kong)氣(qi)(qi)閥(fa)(fa)Vln和(he)vllZ分(fen)(fen)別(bie)進人El一(yi)E3和(he)E4一(yi)E6兩組換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)。兩組換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)之(zhi)間的(de)(de)熱(re)(re)端(duan)溫差(cha)(cha)(cha)可哄騙 v川和(he)vllZ閥(fa)(fa)來(lai)調(diao)理(li),每組內3個(ge)單位(wei)之(zhi)間靠(kao)冷(leng)箱內配管來(lai)平(ping)衡(heng)氣(qi)(qi)流(liu)(liu)(liu)的(de)(de)散布(bu)。增壓空(kong)(kong)(kong)氣(qi)(qi)出主(zhu)換(huan)(huan)(huan)(huan)熱(re)(re)器(qi)(qi)(qi)各單位(wei) 有中(zhong)部(bu)、底部(bu)兩個(ge)抽(chou)口,進膨大(da)機的(de)(de)空(kong)(kong)(kong)氣(qi)(qi)溫度(du)由中(zhong)部(bu)抽(chou)口總管閥(fa)(fa)V31和(he)底部(bu)抽(chou)口總管閥(fa)(fa)V犯來(lai)調(diao)理(li)。返流(liu)(liu)(liu) 氣(qi)(qi)體(ti)只要通過各自總管上(shang)的(de)(de)調(diao)理(li)閥(fa)(fa)來(lai)調(diao)理(li)流(liu)(liu)(liu)量(liang)。