在各行各業管道和設備保溫中電伴熱帶使用已經很廣泛了,電伴熱帶按照保溫特點和保溫溫度主要分為:自限溫電伴熱帶和恒功率電伴熱帶兩大類。它們的發熱原理有著一定的區別,
下面就給大家介紹一下。
自(zi)限(xian)(xian)溫電(dian)(dian)伴熱(re)(re)帶(dai)的(de)(de)工作(zuo)(zuo)原理是在(zai)兩根(gen)供電(dian)(dian)母(mu)(mu)線(xian)之間包(bao)含一種(zhong)帶(dai)狀發(fa)熱(re)(re)材料,這種(zhong)材料具有一定(ding)的(de)(de)正溫度(du)系數(shu),工作(zuo)(zuo)的(de)(de)時候會隨著溫度(du)的(de)(de)升高(gao)而自(zi)身的(de)(de)電(dian)(dian)阻率變大,功率變小。除了自(zi)限(xian)(xian)溫電(dian)(dian)伴熱(re)(re)帶(dai),恒(heng)功率電(dian)(dian)伴熱(re)(re)帶(dai)原理是用兩根(gen)絕緣的(de)(de)銅線(xian)作(zuo)(zuo)為母(mu)(mu)線(xian),在(zai)這兩根(gen)供電(dian)(dian)母(mu)(mu)線(xian)上均勻的(de)(de)纏繞合金發(fa)熱(re)(re)絲,以一定(ding)的(de)(de)長(chang)度(du)作(zuo)(zuo)為節點(dian),每 一(yi)個節點(dian)間組(zu)成(cheng)一(yi)個獨(du)立的(de)(de)(de)(de)回路,這(zhe)樣形(xing)成(cheng)的(de)(de)(de)(de)很多的(de)(de)(de)(de)并聯(lian)電(dian)(dian)(dian)阻,所以統稱為并聯(lian)恒(heng)(heng)功(gong)率(lv)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai),這(zhe)種(zhong)并聯(lian)恒(heng)(heng)功(gong)率(lv)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai)有一(yi)個特點(dian)是可以根(gen)據現場需(xu)要(yao)長(chang)度進行剪切(qie),施工(gong)比較(jiao)靈活。還(huan)有一(yi)種(zhong)叫串(chuan)聯(lian)恒(heng)(heng)功(gong)率(lv)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai),這(zhe)種(zhong)恒(heng)(heng)功(gong)率(lv)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai)是根(gen)據使(shi)(shi)(shi)(shi)用長(chang)度進行定制生產的(de)(de)(de)(de),不能(neng)剪切(qie)使(shi)(shi)(shi)(shi)用,如果切(qie)斷(duan)整(zheng)根(gen)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai)就(jiu)無法使(shi)(shi)(shi)(shi)用了,這(zhe)點(dian)大家要(yao)謹記。在(zai)我們日常看(kan)到的(de)(de)(de)(de)管道保溫(wen)中使(shi)(shi)(shi)(shi)用的(de)(de)(de)(de)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai)主要(yao)是分(fen)為這(zhe)兩(liang)(liang)種(zhong)類型(xing),是普遍使(shi)(shi)(shi)(shi)用的(de)(de)(de)(de)兩(liang)(liang)款保溫(wen)產品(pin),當(dang)然根(gen)據客戶需(xu)求的(de)(de)(de)(de)不同還(huan)可以定制其他形(xing)式(shi)的(de)(de)(de)(de)產品(pin),如高溫(wen)環境施工(gong)的(de)(de)(de)(de)鎧裝型(xing)電(dian)(dian)(dian)伴(ban)(ban)(ban)(ban)熱帶(dai)。
那么這兩種(zhong)類型(xing)電伴(ban)熱帶(dai)(dai)的(de)使用(yong)場合有哪些呢,其實并沒有明確(que)的(de)界限(xian),通常我(wo)們可(ke)以根(gen)據溫度(du)簡要區分,溫度(du)要求低的(de)可(ke)以使用(yong)自限(xian)溫電伴(ban)熱帶(dai)(dai),要求高的(de)可(ke)以使用(yong)恒功率電伴(ban)熱帶(dai)(dai),如果設備(bei)保溫時兩種(zhong)類型(xing)電伴(ban)熱帶(dai)(dai)均可(ke)以使用(yong)的(de),可(ke)以綜合考慮其它因(yin)素(su),也(ye)可(ke)以讓(rang)電伴(ban)熱帶(dai)(dai)廠(chang)家幫助選型(xing)設計。