爐門框架采(cai)用(yong)槽鋼制作(zuo),側(ce)板(ban)和底(di)板(ban)采(cai)用(yong)Q235鋼板(ban)焊接,結(jie)構牢固(gu)可靠,不易(yi)變形和翹曲(qu),整(zheng)體強度好。
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)制系統:主控(kong)系統控(kong)制柜(ju)采用國際流行(xing)立式組合柜(ju)。控(kong)制柜(ju)外表噴涂電腦色或淺駝色。電控(kong)面板上(shang)裝有電流表、電壓表、溫度控(kong)制儀及控(kong)制開關等。
溫度(du)(du)(du)控(kong)制主回(hui)路(lu)(lu)采用(yong)(yong)可控(kong)硅(gui)(gui)過(guo)(guo)零調功(gong)(gong)觸發,可控(kong)硅(gui)(gui)采用(yong)(yong)風冷形式,設(she)有(you)過(guo)(guo)載、過(guo)(guo)熱及過(guo)(guo)流保護(hu)等功(gong)(gong)能(neng)。溫度(du)(du)(du)控(kong)制儀表選(xuan)用(yong)(yong)先進(jin)的上(shang)海(hai)國龍(long)智(zhi)能(neng)高精度(du)(du)(du)數顯PID自整定型儀表,控(kong)制精度(du)(du)(du)±1℃。該溫度(du)(du)(du)控(kong)制配(pei)有(you)熱電偶修正功(gong)(gong)能(neng)、功(gong)(gong)率限(xian)制功(gong)(gong)能(neng)及超溫報警(jing)功(gong)(gong)能(neng)。當爐(lu)門打開(kai)時自動切斷加熱主電路(lu)(lu),實現(xian)聯鎖保護(hu)。
爐(lu)溫記錄采用(yong)南通達華記錄儀,對升溫及保溫時間過程實時打印曲線、記錄溫度(du),同(tong)時對加熱(re)主回路實現監控作用(yong),有效地(di)監視(shi)整(zheng)個生產工藝(yi)。