■熔鹽電加熱器：

　　熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)電(dian)(dian)加(jia)熱器(qi)(qi)是(shi)一(yi)(yi)種(zhong)電(dian)(dian)加(jia)熱設備(bei),用(yong)于對流動的(de)(de)液態、氣態介(jie)質(zhi)的(de)(de)升溫(wen)、保溫(wen)、加(jia)熱。熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)電(dian)(dian)加(jia)熱器(qi)(qi)利用(yong)特殊管狀電(dian)(dian)熱元件(jian)(jian)結合法蘭集束的(de)(de)形式與(yu)壓(ya)力容器(qi)(qi)組成(cheng)一(yi)(yi)個供熱整(zheng)(zheng)體,利用(yong)加(jia)熱二元熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)或三元熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)作為(wei)加(jia)熱介(jie)質(zhi)。一(yi)(yi)般這(zhe)種(zhong)加(jia)熱方式與(yu)熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)罐組成(cheng)一(yi)(yi)個整(zheng)(zheng)體,當常溫(wen)下的(de)(de)硝鹽(yan)(yan)(yan)倒入熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)罐中以后，利用(yong)熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)罐內(nei)的(de)(de)少量電(dian)(dian)熱元件(jian)(jian)給其預(yu)熱，使(shi)之(zhi)變為(wei)液態，然后通過熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)泵抽取(qu)熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)往加(jia)熱器(qi)(qi)內(nei)部流，進一(yi)(yi)步給熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)增溫(wen)，到達熔(rong)(rong)(rong)(rong)(rong)(rong)鹽(yan)(yan)(yan)加(jia)熱器(qi)(qi)出口處(chu)已經基本完成(cheng)加(jia)熱的(de)(de)目(mu)的(de)(de)，并(bing)與(yu)用(yong)戶的(de)(de)用(yong)熱設備(bei)形成(cheng)一(yi)(yi)個循環的(de)(de)整(zheng)(zheng)體，源源不斷的(de)(de)給其加(jia)熱，從(cong)而滿足工藝(yi)的(de)(de)要求(qiu)。

■熔鹽電加熱器應用范(fan)圍：

　　 熔(rong)鹽電加熱器廣泛應用于(yu)儲能、儲熱、火電調峰、化肥、三聚(ju)氫胺、氧化鋁(lv)等高溫(wen)加熱生產工藝。

■熔鹽電(dian)加熱器控制系統概述：

　　1、有常規的(de)電(dian)氣保護，如流量和短路保護等。

　　2、有一套獨(du)立于(yu)溫(wen)度(du)控制的超溫(wen)報警系統，當電(dian)(dian)加熱器內部溫(wen)度(du)超過計定(ding)值時，它將(jiang)不(bu)可(ke)自動復位地關閉電(dian)(dian)加熱器，并(bing)輸(shu)出一個觸點(dian)信號(hao)。

　　3、有一套獨立的低(di)液位報(bao)警，當液位低(di)于(yu)要求值時，它將自(zi)動關閉(bi)電加熱器，并(bing)輸出一個信(xin)號。

　　4、提供數個聯鎖接口，以便和其它設備如泵、流(liu)量(liang)（壓力）開關等裝(zhuang)置聯鎖，確(que)保(bao)加熱(re)(re)器加熱(re)(re)時有(you)一定流(liu)量(liang)的介(jie)質在流(liu)動，保(bao)證系統的安(an)全。

　　5、控制可(ke)以向DCS系統提供(gong)加熱系統處于運(yun)行、停止、超溫(wen)報警、液位信號（低液位報警）、互鎖(suo)狀態、溫(wen)度信號（4~20mA）等信號，除溫(wen)度信號外，它們(men)均(jun)為無源觸點；可(ke)以接受DCS發出的(de)啟動、停止操作命令(ling)，要求的(de)觸點容量(liang)亦為220V   1A。

　　6、具(ju)有(you)PID溫度(du)調節功能(neng)，加(jia)熱(re)系統可以通過程序設置介(jie)質的升溫曲線，并能(neng)在(zai)流量不足(zu)或停止加(jia)熱(re)后，根據工藝要(yao)求(qiu)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)泵，本(ben)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統采(cai)用多級(ji)控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)技術(shu)，即把加(jia)熱(re)器(qi)(qi)分成幾組(zu)(zu)(zu)(zu)，其中一組(zu)(zu)(zu)(zu)也就是很大的一組(zu)(zu)(zu)(zu)可以無級(ji)調壓，根據出口溫度(du)，經運算(suan)后，控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)系統自動控(kong)(kong)(kong)制(zhi)(zhi)(zhi)(zhi)加(jia)熱(re)器(qi)(qi)每組(zu)(zu)(zu)(zu)的通斷和另一組(zu)(zu)(zu)(zu)加(jia)熱(re)器(qi)(qi)的輸出功率，達(da)到無級(ji)調功。這樣，能(neng)很有(you)效(xiao)地達(da)到提高控(kong)(kong)(kong)溫精度(du)的目的。