電伴熱帶是通電為管道、閥門、法蘭、罐體、機械設備等進行伴熱,提供熱補償。其使用的范圍非常廣泛包括石油、化工、電廠、隧道、地面、民用生活等。但是電伴熱帶型號比較多,同時不同生產廠家的電伴熱帶型號也不一樣,所以在選型方面,很多用戶不知道怎么選型,準確地選擇電伴熱帶的型號可以從技術、經濟角度綜合考慮。
電伴(ban)熱(re)帶怎么選型
電(dian)(dian)(dian)伴(ban)熱帶(dai)(dai)怎么(me)(me)(me)選型,從(cong)溫(wen)(wen)度(du)控制方(fang)面來看(kan),如(ru)果對(dui)溫(wen)(wen)度(du)比(bi)較嚴格,那(nei)么(me)(me)(me)建(jian)議(yi)可(ke)(ke)(ke)以(yi)使用(yong)恒功(gong)(gong)率電(dian)(dian)(dian)伴(ban)熱帶(dai)(dai);如(ru)果對(dui)溫(wen)(wen)度(du)方(fang)面相對(dui)要(yao)(yao)求(qiu)不(bu)高(gao),假若(ruo)只需防(fang)(fang)凍(dong)和簡(jian)單的保(bao)溫(wen)(wen),那(nei)么(me)(me)(me)建(jian)議(yi)可(ke)(ke)(ke)以(yi)使用(yong)自(zi)(zi)(zi)控溫(wen)(wen)電(dian)(dian)(dian)伴(ban)熱帶(dai)(dai),就可(ke)(ke)(ke)以(yi)省略溫(wen)(wen)控器(qi)。如(ru)果是閥門、法(fa)蘭需要(yao)(yao)交叉(cha)纏繞,則不(bu)能(neng)安裝恒功(gong)(gong)率電(dian)(dian)(dian)伴(ban)熱帶(dai)(dai),因其電(dian)(dian)(dian)阻絲發(fa)熱的原理(li),必須要(yao)(yao)使用(yong)溫(wen)(wen)控器(qi)進行限(xian)溫(wen)(wen),否則極易損壞(huai)電(dian)(dian)(dian)伴(ban)熱帶(dai)(dai),就需要(yao)(yao)使用(yong)自(zi)(zi)(zi)限(xian)溫(wen)(wen)電(dian)(dian)(dian)熱帶(dai)(dai),PTC半導(dao)體材質(zhi)自(zi)(zi)(zi)動限(xian)溫(wen)(wen)自(zi)(zi)(zi)動控溫(wen)(wen)可(ke)(ke)(ke)以(yi)阻止溫(wen)(wen)度(du)過高(gao)。一(yi)般在(zai)距離比(bi)較長的管線則推薦使用(yong)串聯(lian)型恒功(gong)(gong)率電(dian)(dian)(dian)熱帶(dai)(dai),復雜管路則建(jian)議(yi)使用(yong)自(zi)(zi)(zi)限(xian)溫(wen)(wen)電(dian)(dian)(dian)熱帶(dai)(dai)和并聯(lian)恒功(gong)(gong)率電(dian)(dian)(dian)熱帶(dai)(dai)。一(yi)般電(dian)(dian)(dian)廠、石化等特(te)殊條(tiao)件適合使用(yong)防(fang)(fang)爆型、防(fang)(fang)爆型自(zi)(zi)(zi)限(xian)溫(wen)(wen)電(dian)(dian)(dian)熱帶(dai)(dai)。
上面(mian)是從(cong)(cong)技術方(fang)面(mian)考(kao)慮電(dian)伴(ban)熱(re)帶(dai)的選(xuan)型,當然實際(ji)應用(yong)(yong)的時候還(huan)要從(cong)(cong)經濟角度來考(kao)慮,這里用(yong)(yong)戶不(bu)用(yong)(yong)擔心,電(dian)伴(ban)熱(re)帶(dai)廠家選(xuan)型的時候會把所有因素考(kao)慮進去的。