爐門框架(jia)采用(yong)槽鋼制作,側板(ban)和底板(ban)采用(yong)Q235鋼板(ban)焊接(jie),結構牢固可靠,不易變形和翹曲,整體(ti)強(qiang)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)制系(xi)統:主控(kong)系(xi)統控(kong)制柜(ju)采用國(guo)際流行立(li)式組合柜(ju)。控(kong)制柜(ju)外(wai)表噴涂(tu)電(dian)腦色或(huo)淺駝色。電(dian)控(kong)面板上裝有電(dian)流表、電(dian)壓(ya)表、溫度控(kong)制儀及(ji)控(kong)制開關等。
溫(wen)(wen)度(du)控制(zhi)主(zhu)回路采(cai)用(yong)可控硅過零調功(gong)(gong)(gong)觸發(fa),可控硅采(cai)用(yong)風冷形式,設有(you)過載、過熱(re)及過流保護(hu)等功(gong)(gong)(gong)能(neng)(neng)(neng)。溫(wen)(wen)度(du)控制(zhi)儀(yi)表(biao)選用(yong)先(xian)進的上海國(guo)龍智(zhi)能(neng)(neng)(neng)高精度(du)數(shu)顯PID自整定型(xing)儀(yi)表(biao),控制(zhi)精度(du)±1℃。該溫(wen)(wen)度(du)控制(zhi)配有(you)熱(re)電(dian)偶修正功(gong)(gong)(gong)能(neng)(neng)(neng)、功(gong)(gong)(gong)率(lv)限(xian)制(zhi)功(gong)(gong)(gong)能(neng)(neng)(neng)及超溫(wen)(wen)報警功(gong)(gong)(gong)能(neng)(neng)(neng)。當(dang)爐(lu)門(men)打開時自動切斷(duan)加熱(re)主(zhu)電(dian)路,實(shi)現聯鎖保護(hu)。
爐溫(wen)記(ji)錄(lu)(lu)采用(yong)南通達華記(ji)錄(lu)(lu)儀,對升溫(wen)及(ji)保溫(wen)時(shi)間(jian)過程實時(shi)打印曲線(xian)、記(ji)錄(lu)(lu)溫(wen)度,同時(shi)對加熱主回路實現監控作用(yong),有(you)效(xiao)地監視整個(ge)生產工藝。