護套式電加熱器工作原理：

電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)器是一(yi)種消耗電(dian)(dian)(dian)能轉(zhuan)換(huan)為(wei)熱(re)(re)(re)(re)(re)能，來對需(xu)加(jia)熱(re)(re)(re)(re)(re)物料進(jin)行(xing)加(jia)熱(re)(re)(re)(re)(re)。加(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)在工(gong)作(zuo)中(zhong)低溫流體介質(zhi)(zhi)(zhi)通過(guo)管(guan)(guan)(guan)道在壓力作(zuo)用(yong)下進(jin)入其輸入口，沿(yan)著(zhu)電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)容器內部特定換(huan)熱(re)(re)(re)(re)(re)流道，運用(yong)空氣電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)的流體熱(re)(re)(re)(re)(re)力學原理設(she)計(ji)的路徑，帶走空氣電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)中(zhong)的電(dian)(dian)(dian)熱(re)(re)(re)(re)(re)元件工(gong)作(zuo)中(zhong)所(suo)產生的高(gao)溫熱(re)(re)(re)(re)(re)能量(liang)，使空氣電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)被(bei)加(jia)熱(re)(re)(re)(re)(re)介質(zhi)(zhi)(zhi)溫度升高(gao)，電(dian)(dian)(dian)加(jia)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)出口得(de)到(dao)工(gong)藝要求(qiu)的高(gao)溫介質(zhi)(zhi)(zhi)。

電加熱管的內部控制系統依據輸出口的溫度傳感器信號自動調節電加熱管輸出功率，護套式電加熱器使空(kong)氣(qi)電(dian)加(jia)熱(re)管的(de)輸出口的(de)介質溫(wen)度均勻；當空(kong)氣(qi)電(dian)加(jia)熱(re)管的(de)發(fa)(fa)(fa)熱(re)元(yuan)件超(chao)溫(wen)時，發(fa)(fa)(fa)熱(re)元(yuan)件的(de)獨立的(de)過熱(re)保(bao)護裝(zhuang)置立即切斷加(jia)熱(re)電(dian)源，避免空(kong)氣(qi)電(dian)加(jia)熱(re)管中的(de)加(jia)熱(re)物料超(chao)溫(wen)引起結(jie)焦、變質、碳化(hua)，嚴重(zhong)時導致(zhi)空(kong)氣(qi)電(dian)加(jia)熱(re)管中的(de)發(fa)(fa)(fa)熱(re)元(yuan)件燒壞，延(yan)長電(dian)加(jia)熱(re)管使用壽命。

1、本(ben)電(dian)加熱(re)器有加熱(re)芯子和護套(tao)管組成，加熱(re)芯子用管狀(zhuang)電(dian)熱(re)元件作為(wei)熱(re)源，護套(tao)管采(cai)用薄型(xing)不銹(xiu)鋼制成，它散熱(re)面積較大，傳熱(re)快，接(jie)線(xian)端裝置(zhi)部分(fen)分(fen)為(wei)普通型(xing)（采(cai)用鐵制拉伸杯子型(xing)罩殼(ke)）和特殊型(xing)（采(cai)用螺栓式隔爆(bao)型(xing)裝置(zhi)罩殼(ke)密封），特殊型(xing)具有達到防爆(bao)標志dIICT4.防護等(deng)級ＩＰ６５系(xi)列標準的要求。

２、電(dian)加熱器與油(you)(you)箱容(rong)器體采用法蘭連接(jie)，護套(tao)將加熱芯(xin)子與被(bei)加熱油(you)(you)液隔(ge)離，在維(wei)修(xiu)(xiu)電(dian)加熱器時，不需要放掉油(you)(you)箱中的油(you)(you)液，僅需抽出加熱芯(xin)子，更換一個新的加熱芯(xin)子即(ji)可，維(wei)修(xiu)(xiu)方便。

３、在設計(ji)時應考慮護套與(yu)熱(re)加油(you)液接觸面積，使(shi)油(you)液不(bu)會因加熱(re)溫度過高(gao)而(er)局(ju)部(bu)碳化，該(gai)型號加熱(re)器只適用于(yu)導熱(re)油(you)或受熱(re)效果較好的(de)油(you)液與(yu)介質內加熱(re)使(shi)用。