一、電熱管工作原理是什么
電熱管原理:利用電(dian)熱管內部的電(dian)阻絲(si)來加熱的。
電(dian)熱(re)(re)(re)(re)(re)管(guan)是一種消(xiao)耗(hao)電(dian)能(neng)轉換為(wei)熱(re)(re)(re)(re)(re)能(neng),來對需加(jia)熱(re)(re)(re)(re)(re)物料進(jin)行(xing)加(jia)熱(re)(re)(re)(re)(re)。在工作(zuo)中(zhong)低溫流體(ti)介(jie)質通過管(guan)道在壓(ya)力(li)作(zuo)用(yong)下進(jin)入其輸入口,沿著電(dian)加(jia)熱(re)(re)(re)(re)(re)容器內部(bu)特定換熱(re)(re)(re)(re)(re)流道,運用(yong)流體(ti)熱(re)(re)(re)(re)(re)力(li)學(xue)原理設(she)計(ji)的路徑,帶(dai)走電(dian)熱(re)(re)(re)(re)(re)元件工作(zuo)中(zhong)所產生(sheng)的高(gao)溫熱(re)(re)(re)(re)(re)能(neng)量,使被(bei)加(jia)熱(re)(re)(re)(re)(re)介(jie)質溫度升高(gao),電(dian)熱(re)(re)(re)(re)(re)管(guan)出口得到(dao)工藝要(yao)求(qiu)的高(gao)溫介(jie)質。
此外,電(dian)(dian)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)還(huan)可(ke)以利用感應(ying)(ying)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)或(huo)(huo)電(dian)(dian)弧加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)的方式工(gong)作。感應(ying)(ying)加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)通(tong)過產(chan)生(sheng)(sheng)交變(bian)電(dian)(dian)場(chang)或(huo)(huo)磁場(chang)來激(ji)化被加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)物體,使其(qi)產(chan)生(sheng)(sheng)高變(bian)運(yun)動或(huo)(huo)渦流,從(cong)而(er)產(chan)生(sheng)(sheng)熱(re)(re)(re)(re)(re)量。電(dian)(dian)弧加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)則通(tong)過在兩(liang)電(dian)(dian)極之間產(chan)生(sheng)(sheng)電(dian)(dian)弧,將電(dian)(dian)能(neng)直接轉(zhuan)化為熱(re)(re)(re)(re)(re)能(neng)。電(dian)(dian)熱(re)(re)(re)(re)(re)管(guan)(guan)(guan)的結構通(tong)常包括一個加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)線圈(quan)和(he)一個由絕緣材料包裹的保(bao)護管(guan)(guan)(guan),當電(dian)(dian)流通(tong)過加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)線圈(quan)時,線圈(quan)受(shou)熱(re)(re)(re)(re)(re)膨(peng)脹,導致保(bao)護管(guan)(guan)(guan)內的加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re)液體被加(jia)(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)(re),從(cong)而(er)產(chan)生(sheng)(sheng)熱(re)(re)(re)(re)(re)傳導效(xiao)應(ying)(ying)。
二、電熱管內部結構由什么組成
電熱管主要由以下部分組成:
1、管殼:通常由(you)不銹鋼或鎳鐵合金(jin)制(zhi)成,用于保護加熱絲(si)和絕緣層。
2、加熱絲:由鎳鉻合(he)金(jin)絲或其他合(he)金(jin)絲制(zhi)成,是電熱(re)(re)管的(de)核心(xin)部(bu)件,受(shou)電流作用發熱(re)(re),傳遞(di)熱(re)(re)量給(gei)被(bei)加熱(re)(re)物(wu)體。
3、絕緣層:一般由氧化鋁或其(qi)他(ta)絕(jue)緣材料制成,主要起到絕(jue)緣和(he)固(gu)定加熱(re)絲(si)的作用。
4、引線:通(tong)常由鎳銅合(he)金制成,用(yong)于傳遞電(dian)流。
此(ci)外,電熱管(guan)還有其他類型,如U形、直型、螺(luo)紋電熱管(guan)等(deng),它們在形狀和用途上(shang)有所不同,但基(ji)本結構(gou)相似(si),包(bao)括(kuo)加熱元件、絕(jue)緣子(zi)和引(yin)出棒等(deng)。