電熱鍋爐的原理介紹

1、電熱管供熱原理

電熱(re)(re)(re)管供熱(re)(re)(re)目前被(bei)普遍采(cai)用(yong)在電熱(re)(re)(re)鍋(guo)爐(lu)上，適合(he)小范圍供熱(re)(re)(re)。它能承(cheng)受(shou)50Hz，1500V交(jiao)流(liu)電壓。單位表面積的功率(lv)3~8W/cm2，一(yi)般較(jiao)大容量電熱(re)(re)(re)管做成多頭形式，功率(lv)可(ke)達(da)30kW，具有結(jie)構簡單，轉(zhuan)換過程中沒有損失等特點(dian)。電熱(re)(re)(re)管質(zhi)量的高低，直接影響(xiang)電熱(re)(re)(re)鍋(guo)爐(lu)的運(yun)行可(ke)靠性(xing)和使用(yong)壽命。

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2、電磁感應式供熱原理

電磁(ci)(ci)感應式(shi)利用電流流過帶有鐵(tie)芯的(de)線圈產(chan)(chan)生交變磁(ci)(ci)場，在(zai)不同的(de)材料中產(chan)(chan)生渦流電磁(ci)(ci)感應而發生熱(re)量。由(you)于存在(zai)感抗，轉換(huan)中產(chan)(chan)生無(wu)功功率(lv)，功率(lv)因素<1，因此一般只用在(zai)較小容(rong)量的(de)電熱(re)設(she)備上。

3、電極式供熱原理

電極(ji)式供熱(re)比較少(shao)見，多用于冶煉金屬(shu)行業(ye)，在家用電鍋爐(lu)中(zhong)較少(shao)采(cai)用。當電流從一(yi)個(ge)電極(ji)引入(ru)并(bing)通(tong)過水到另一(yi)個(ge)電極(ji)，水就象一(yi)個(ge)通(tong)電的電阻被(bei)加熱(re)或沸騰。調(diao)節(jie)電極(ji)在水中(zhong)的深度，就可改變(bian)輸入(ru)的功率。當水面(mian)低于電極(ji)時，輸入(ru)功率為零（即電極(ji)無(wu)電流）所以鍋爐(lu)不(bu)會燒干鍋。

常見的電熱鍋爐有哪些

1、常壓電熱鍋爐

一種常(chang)壓(ya)電(dian)(dian)(dian)熱(re)鍋爐，它包(bao)(bao)括水(shui)(shui)平安裝(zhuang)(zhuang)在(zai)底(di)座上的密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)、安裝(zhuang)(zhuang)底(di)座上的水(shui)(shui)循環裝(zhuang)(zhuang)置(zhi)和固定(ding)安裝(zhuang)(zhuang)在(zai)密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)側壁(bi)上的電(dian)(dian)(dian)加(jia)(jia)熱(re)裝(zhuang)(zhuang)置(zhi)，所(suo)(suo)(suo)述(shu)(shu)密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)外(wai)側設置(zhi)保溫層，所(suo)(suo)(suo)述(shu)(shu)電(dian)(dian)(dian)加(jia)(jia)熱(re)裝(zhuang)(zhuang)置(zhi)包(bao)(bao)括至少兩組沿密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)長度方向均(jun)布的電(dian)(dian)(dian)加(jia)(jia)熱(re)器(qi)，所(suo)(suo)(suo)述(shu)(shu)密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)側壁(bi)上設置(zhi)數量與電(dian)(dian)(dian)加(jia)(jia)熱(re)器(qi)數量相同(tong)的法(fa)(fa)(fa)(fa)蘭(lan)(lan)(lan)筒(tong)(tong)(tong)，所(suo)(suo)(suo)述(shu)(shu)法(fa)(fa)(fa)(fa)蘭(lan)(lan)(lan)筒(tong)(tong)(tong)與密(mi)(mi)封(feng)筒(tong)(tong)(tong)體(ti)(ti)貫通，每套法(fa)(fa)(fa)(fa)蘭(lan)(lan)(lan)筒(tong)(tong)(tong)外(wai)端借(jie)助于螺栓安裝(zhuang)(zhuang)法(fa)(fa)(fa)(fa)蘭(lan)(lan)(lan)盤(pan)，所(suo)(suo)(suo)述(shu)(shu)電(dian)(dian)(dian)加(jia)(jia)熱(re)器(qi)安裝(zhuang)(zhuang)在(zai)法(fa)(fa)(fa)(fa)蘭(lan)(lan)(lan)盤(pan)內(nei)側，所(suo)(suo)(suo)述(shu)(shu)電(dian)(dian)(dian)加(jia)(jia)熱(re)器(qi)還(huan)配套安裝(zhuang)(zhuang)控(kong)制(zhi)系統，所(suo)(suo)(suo)述(shu)(shu)控(kong)制(zhi)系統用于控(kong)制(zhi)電(dian)(dian)(dian)加(jia)(jia)熱(re)裝(zhuang)(zhuang)置(zhi)和水(shui)(shui)循環裝(zhuang)(zhuang)置(zhi)。

2、電開水鍋爐

配(pei)置微電腦(nao)控制器、陶瓷電熱管，采(cai)用(yong)(yong)電磁閥作為補水(shui)裝(zhuang)置配(pei)合水(shui)位電極、感溫探(tan)頭(tou)全(quan)自動(dong)工(gong)作，連續大量(liang)供應飲用(yong)(yong)開水(shui)，廣泛適(shi)用(yong)(yong)于政府(fu)機關、企業(ye)、工(gong)廠(chang)、醫院、學校(xiao)、賓館、酒店等企事業(ye)單位使(shi)用(yong)(yong)。

3、電蓄開水鍋爐

配(pei)置(zhi)微(wei)電(dian)(dian)腦控制器、陶瓷電(dian)(dian)熱(re)管，采用(yong)電(dian)(dian)磁(ci)閥作為補水(shui)裝置(zhi)配(pei)合水(shui)位(wei)電(dian)(dian)極、感溫探頭利(li)用(yong)夜(ye)間(jian)（低谷電(dian)(dian)）時間(jian)全自動工作，可以在白天（用(yong)電(dian)(dian)高峰期）大量供應飲(yin)用(yong)開水(shui)，廣(guang)泛適用(yong)于政府(fu)機(ji)關、企業(ye)、工廠、醫(yi)院、學(xue)校(xiao)、賓館、酒店等企事(shi)業(ye)單位(wei)使用(yong)。

4、電熱蒸汽鍋爐

將水加熱(re)產生(sheng)(sheng)蒸(zheng)(zheng)汽(qi)的電(dian)(dian)(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)，又名(ming)電(dian)(dian)(dian)(dian)熱(re)蒸(zheng)(zheng)汽(qi)發生(sheng)(sheng)器。按結(jie)構(gou)分為(wei)(wei)立式和臥式兩(liang)種鍋(guo)(guo)爐(lu)(lu)(lu)。按產生(sheng)(sheng)的蒸(zheng)(zheng)汽(qi)壓(ya)(ya)(ya)(ya)力(li)分為(wei)(wei)低壓(ya)(ya)(ya)(ya)、中壓(ya)(ya)(ya)(ya)、高(gao)壓(ya)(ya)(ya)(ya)三種規格鍋(guo)(guo)爐(lu)(lu)(lu)。0.4MPa及以下工(gong)(gong)作壓(ya)(ya)(ya)(ya)力(li)的電(dian)(dian)(dian)(dian)熱(re)鍋(guo)(guo)爐(lu)(lu)(lu)稱為(wei)(wei)低壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)，主要用于生(sheng)(sheng)活供熱(re)。0.7~1MPa的電(dian)(dian)(dian)(dian)熱(re)燕汽(qi)鍋(guo)(guo)爐(lu)(lu)(lu)稱為(wei)(wei)中壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)，可供生(sheng)(sheng)活、生(sheng)(sheng)產用汽(qi)。1.6MPa以上的電(dian)(dian)(dian)(dian)熱(re)蒸(zheng)(zheng)汽(qi)鍋(guo)(guo)爐(lu)(lu)(lu)稱為(wei)(wei)高(gao)壓(ya)(ya)(ya)(ya)電(dian)(dian)(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)，現(xian)多用于試驗(yan)室(shi)。由于承(cheng)壓(ya)(ya)(ya)(ya)指標不(bu)同，在使(shi)用選型(xing)方面要注憊區分。我國(guo)生(sheng)(sheng)產的定型(xing)電(dian)(dian)(dian)(dian)熱(re)蒸(zheng)(zheng)汽(qi)鍋(guo)(guo)爐(lu)(lu)(lu)的最大出(chu)力(li)為(wei)(wei)Zt/h，最高(gao)工(gong)(gong)作壓(ya)(ya)(ya)(ya)力(li)為(wei)(wei)1.6MPa.電(dian)(dian)(dian)(dian)熱(re)熱(re)水鍋(guo)(guo)爐(lu)(lu)(lu)將水加熱(re)提供熱(re)水的電(dian)(dian)(dian)(dian)鍋(guo)(guo)爐(lu)(lu)(lu)。

5、電熱熱水鍋爐

在(zai)結(jie)構上(shang)也(ye)分立式(shi)和臥式(shi)兩種。隨著鍋爐(lu)功(gong)率(lv)(lv)的(de)(de)(de)增加(jia)(jia)，電(dian)熱(re)(re)熱(re)(re)水(shui)鍋爐(lu)有雙頭和單(dan)頭之分。加(jia)(jia)熱(re)(re)電(dian)功(gong)率(lv)(lv)在(zai)360kw及(ji)以下的(de)(de)(de)臥式(shi)電(dian)熱(re)(re)熱(re)(re)水(shui)鍋爐(lu)，大多做(zuo)成單(dan)頭，加(jia)(jia)熱(re)(re)電(dian)功(gong)率(lv)(lv)大于(yu)360kw的(de)(de)(de)電(dian)熱(re)(re)熱(re)(re)水(shui)鍋爐(lu)，一般做(zuo)成雙頭電(dian)鍋爐(lu)。熱(re)(re)水(shui)溫度小于(yu)95℃的(de)(de)(de)電(dian)熱(re)(re)熱(re)(re)水(shui)鍋爐(lu)，常(chang)用于(yu)供應(ying)開水(shui)或(huo)洗(xi)浴的(de)(de)(de)場所。