爐門框架采用槽鋼(gang)(gang)制作,側板和(he)底板采用Q235鋼(gang)(gang)板焊(han)接,結(jie)構(gou)牢固可靠(kao),不(bu)易變形和(he)翹曲,整(zheng)體(ti)強度好。
爐門升降為電動葫蘆驅動。箱式預熱爐廠家在爐門上有一斷路裝置,該裝置與輪軸連鎖,當爐門打開時即切斷加熱元件電源以保證操作人員安全。爐門上裝有調節式密封機構,有效使爐門密封。在爐頂上有一熱電偶孔,在使用時將熱電偶插入爐膛通過電爐控制柜來控制爐膛工作溫度。
控(kong)制(zhi)(zhi)系統:主控(kong)系統控(kong)制(zhi)(zhi)柜(ju)采用國際流(liu)行立式組合柜(ju)。控(kong)制(zhi)(zhi)柜(ju)外表噴(pen)涂電(dian)腦(nao)色或淺駝(tuo)色。電(dian)控(kong)面(mian)板上裝(zhuang)有電(dian)流(liu)表、電(dian)壓表、溫度控(kong)制(zhi)(zhi)儀及控(kong)制(zhi)(zhi)開關(guan)等(deng)。
溫度控(kong)(kong)制主(zhu)回路采(cai)用(yong)可控(kong)(kong)硅(gui)(gui)過零調(diao)功(gong)(gong)觸發,可控(kong)(kong)硅(gui)(gui)采(cai)用(yong)風冷形式(shi),設有過載、過熱(re)及過流保護等功(gong)(gong)能(neng)。溫度控(kong)(kong)制儀表選用(yong)先進的上海國龍(long)智能(neng)高精度數顯(xian)PID自整定型儀表,控(kong)(kong)制精度±1℃。該溫度控(kong)(kong)制配(pei)有熱(re)電(dian)偶修(xiu)正功(gong)(gong)能(neng)、功(gong)(gong)率限制功(gong)(gong)能(neng)及超溫報警功(gong)(gong)能(neng)。當爐門打開(kai)時自動切斷加(jia)熱(re)主(zhu)電(dian)路,實(shi)現(xian)聯鎖保護。
爐溫記(ji)錄(lu)采用南通(tong)達華記(ji)錄(lu)儀,對(dui)升溫及(ji)保溫時(shi)(shi)間(jian)過程實(shi)時(shi)(shi)打印曲(qu)線、記(ji)錄(lu)溫度,同時(shi)(shi)對(dui)加熱主回路實(shi)現監控(kong)作用,有效地監視整個(ge)生(sheng)產工藝(yi)。