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(dian)伴熱帶怎么選型(xing)
電(dian)(dian)伴(ban)(ban)熱(re)帶(dai)(dai)怎么選(xuan)型(xing)，從溫(wen)度(du)(du)控(kong)(kong)制(zhi)方面(mian)來看(kan)，如(ru)果對(dui)(dui)溫(wen)度(du)(du)比較嚴格，那么建議可(ke)以(yi)使(shi)用(yong)(yong)恒(heng)(heng)功率電(dian)(dian)伴(ban)(ban)熱(re)帶(dai)(dai)；如(ru)果對(dui)(dui)溫(wen)度(du)(du)方面(mian)相對(dui)(dui)要(yao)求不高，假若只需防(fang)凍(dong)和簡單的(de)保溫(wen)，那么建議可(ke)以(yi)使(shi)用(yong)(yong)自(zi)(zi)控(kong)(kong)溫(wen)電(dian)(dian)伴(ban)(ban)熱(re)帶(dai)(dai)，就可(ke)以(yi)省略溫(wen)控(kong)(kong)器。如(ru)果是閥(fa)門、法蘭需要(yao)交叉纏繞，則不能(neng)安裝恒(heng)(heng)功率電(dian)(dian)伴(ban)(ban)熱(re)帶(dai)(dai)，因(yin)其電(dian)(dian)阻(zu)絲發熱(re)的(de)原理，必須要(yao)使(shi)用(yong)(yong)溫(wen)控(kong)(kong)器進行(xing)限(xian)溫(wen)，否(fou)則極易(yi)損(sun)壞(huai)電(dian)(dian)伴(ban)(ban)熱(re)帶(dai)(dai)，就需要(yao)使(shi)用(yong)(yong)自(zi)(zi)限(xian)溫(wen)電(dian)(dian)熱(re)帶(dai)(dai)，PTC半(ban)導體(ti)(ti)材質(zhi)自(zi)(zi)動(dong)限(xian)溫(wen)自(zi)(zi)動(dong)控(kong)(kong)溫(wen)可(ke)以(yi)阻(zu)止溫(wen)度(du)(du)過高。一般在距(ju)離比較長的(de)管線則推(tui)薦使(shi)用(yong)(yong)串聯型(xing)恒(heng)(heng)功率電(dian)(dian)熱(re)帶(dai)(dai)，復雜管路(lu)則建議使(shi)用(yong)(yong)自(zi)(zi)限(xian)溫(wen)電(dian)(dian)熱(re)帶(dai)(dai)和并聯恒(heng)(heng)功率電(dian)(dian)熱(re)帶(dai)(dai)。一般電(dian)(dian)廠、石化等(deng)特殊條件適(shi)合使(shi)用(yong)(yong)防(fang)爆型(xing)、防(fang)爆型(xing)自(zi)(zi)限(xian)溫(wen)電(dian)(dian)熱(re)帶(dai)(dai)。
上面是從技術方面考(kao)慮(lv)電伴(ban)熱帶(dai)的選型，當然實(shi)際(ji)應用(yong)的時候還要從經濟(ji)角度來考(kao)慮(lv)，這里用(yong)戶不用(yong)擔心(xin)，電伴(ban)熱帶(dai)廠(chang)家選型的時候會(hui)把所有因素(su)考(kao)慮(lv)進去(qu)的。
