爐門框架采用(yong)槽鋼制作,側板和底板采用(yong)Q235鋼板焊接(jie),結(jie)構牢固可(ke)靠,不易變形和翹曲,整體強度好。
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)(kong)制(zhi)系統:主控(kong)(kong)系統控(kong)(kong)制(zhi)柜采用國際流行立(li)式組合柜。控(kong)(kong)制(zhi)柜外(wai)表噴涂(tu)電腦色(se)或淺駝色(se)。電控(kong)(kong)面板上裝(zhuang)有電流表、電壓(ya)表、溫(wen)度控(kong)(kong)制(zhi)儀及(ji)控(kong)(kong)制(zhi)開關等。
溫度(du)(du)控(kong)(kong)制(zhi)(zhi)主(zhu)回路采用可控(kong)(kong)硅(gui)過(guo)(guo)零(ling)調功(gong)觸發(fa),可控(kong)(kong)硅(gui)采用風冷形(xing)式,設(she)有(you)過(guo)(guo)載(zai)、過(guo)(guo)熱及(ji)過(guo)(guo)流(liu)保護等(deng)功(gong)能(neng)。溫度(du)(du)控(kong)(kong)制(zhi)(zhi)儀(yi)表選用先進的上海國(guo)龍智(zhi)能(neng)高精(jing)度(du)(du)數顯PID自整定型儀(yi)表,控(kong)(kong)制(zhi)(zhi)精(jing)度(du)(du)±1℃。該溫度(du)(du)控(kong)(kong)制(zhi)(zhi)配(pei)有(you)熱電偶修正(zheng)功(gong)能(neng)、功(gong)率(lv)限(xian)制(zhi)(zhi)功(gong)能(neng)及(ji)超(chao)溫報警功(gong)能(neng)。當爐門打開時自動切斷加熱主(zhu)電路,實現(xian)聯鎖保護。
爐溫記錄(lu)采用(yong)南通達華記錄(lu)儀,對(dui)升溫及(ji)保溫時(shi)間(jian)過程實(shi)時(shi)打印曲線、記錄(lu)溫度,同(tong)時(shi)對(dui)加熱主回路實(shi)現監控作用(yong),有效(xiao)地監視整個生(sheng)產工藝。