翅片管換熱器的用途
翅片管換熱(re)(re)器是人們為了強化管式換熱(re)(re)器的傳(chuan)熱(re)(re)效果而在基(ji)管外表面增加翅片的一種特殊管式換熱(re)(re)器。
產品(pin)廣(guang)泛應用于動力、化工(gong)、石油(you)、電(dian)力、空調工(gong)程和制(zhi)冷工(gong)程中。
二 翅片管的類型翅片(pian)管(guan)式(shi)換熱器的基(ji)(ji)本傳(chuan)熱元件(jian)為翅片(pian)管(guan),翅片(pian)管(guan)由基(ji)(ji)管(guan)和翅片(pian)組合(he)而成。基(ji)(ji)管(guan)通常(chang)為圓(yuan)管(guan),也有橢圓(yuan)管(guan)和扁平管(guan)。
翅(chi)片的表(biao)面結構(gou)有平翅(chi)、間斷翅(chi)、波紋翅(chi)和(he)穿孔翅(chi)等(deng)。其中,后(hou)兩者(zhe)為高效換熱片型(xing)。
三 翅片管的結構1、按結構型式分類
從(cong)結構型(xing)式(shi)上翅(chi)(chi)片(pian)(pian)(pian)管(guan)(guan)可分為縱向和(he)徑(jing)向兩種基本類型(xing),其他(ta)型(xing)式(shi)均為這兩類的發展和(he)變形(xing),例如(ru)大螺旋角(jiao)翅(chi)(chi)片(pian)(pian)(pian)管(guan)(guan)接近縱向,小螺旋角(jiao)翅(chi)(chi)片(pian)(pian)(pian)管(guan)(guan)接近徑(jing)向翅(chi)(chi)片(pian)(pian)(pian)的形(xing)狀有圓形(xing)、矩形(xing)和(he)針(zhen)形(xing)。此外,翅(chi)(chi)片(pian)(pian)(pian)可設置在管(guan)(guan)外,稱(cheng)外翅(chi)(chi)片(pian)(pian)(pian)管(guan)(guan);也(ye)可設置在管(guan)(guan)內,稱(cheng)內翅(chi)(chi)片(pian)(pian)(pian)管(guan)(guan)或(huo)內外兼有。
2、按制造工藝分類
按制造工(gong)藝可把(ba)翅(chi)(chi)片(pian)(pian)管(guan)(guan)分(fen)類為整體翅(chi)(chi)片(pian)(pian)管(guan)(guan)、焊(han)接翅(chi)(chi)片(pian)(pian)管(guan)(guan)、高頻(pin)焊(han)翅(chi)(chi)片(pian)(pian)管(guan)(guan)和機械連(lian)接翅(chi)(chi)片(pian)(pian)管(guan)(guan)。
(1)整體翅片管,由鑄造(zao)、機械加工(gong)或軋制而(er)成,翅片與管子為一(yi)整體。
(2)焊(han)接翅(chi)片(pian)(pian)管(guan),使用釬焊(han)或惰性(xing)氣體保護焊(han)等工藝制造(zao)。現代焊(han)接技(ji)術可使不(bu)同材料的(de)翅(chi)片(pian)(pian)連接在一起,并(bing)能將翅(chi)片(pian)(pian)管(guan)制造(zao)得簡(jian)單、經(jing)濟,具(ju)有較好的(de)傳(chuan)熱(re)及機械性(xing)能,已被廣泛應用。由于焊(han)縫(feng)中殘渣不(bu)利于傳(chuan)熱(re),甚至會引起斷(duan)裂,因此在生產這類翅(chi)片(pian)(pian)管(guan)時保證焊(han)接工藝質量。
(3)高(gao)頻(pin)焊翅片(pian)管(guan),利用高(gao)頻(pin)發生器(qi)產生的高(gao)頻(pin)電感(gan)應,使管(guan)子表面與翅片(pian)接觸(chu)處產生高(gao)溫,在10μm
左右(you)的(de)深(shen)度范圍內(nei)使(shi)兩者溶化,再加壓(ya)使(shi)翅片(pian)與管子(zi)連(lian)為(wei)一(yi)體。無(wu)焊劑,也無(wu)焊料,制造簡單,生產率高,傳熱及機械性(xing)能優良(liang)。這是為(wei)理想的(de)一(yi)類(lei)翅片(pian)管,正為(wei)廣大用戶認識(shi)和采(cai)用。
(4)機械連接(jie)(jie)翅片(pian)管(guan),通(tong)常(chang)有繞(rao)片(pian)式(shi)(shi)(shi)、鑲嵌式(shi)(shi)(shi)、套(tao)片(pian)式(shi)(shi)(shi)或串(chuan)片(pian)式(shi)(shi)(shi)等三種類型。繞(rao)片(pian)式(shi)(shi)(shi)翅片(pian)管(guan)制造簡單,把金屬帶(dai)用(yong)機械或焊接(jie)(jie)方(fang)式(shi)(shi)(shi)周定(ding)于管(guan)子一端,借管(guan)子轉動力矩將(jiang)金屬帶(dai)緊緊地(di)纏繞(rao)于管(guan)外壁,另一端固定(ding)即成繞(rao)片(pian)式(shi)(shi)(shi)翅片(pian)管(guan)。繞(rao)片(pian)的材料可以是銅帶(dai)、鋼帶(dai)或者鋁帶(dai)。