爐門框(kuang)架(jia)采用(yong)槽(cao)鋼(gang)制(zhi)作,側板(ban)和(he)底板(ban)采用(yong)Q235鋼(gang)板(ban)焊接,結(jie)構牢(lao)固(gu)可靠,不易(yi)變(bian)形和(he)翹曲,整(zheng)體強度(du)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(tong):主控(kong)系統(tong)控(kong)制(zhi)(zhi)柜(ju)采(cai)用(yong)國際流(liu)行立式組合柜(ju)。控(kong)制(zhi)(zhi)柜(ju)外(wai)表(biao)噴涂電(dian)腦色(se)或淺(qian)駝(tuo)色(se)。電(dian)控(kong)面板上裝有(you)電(dian)流(liu)表(biao)、電(dian)壓表(biao)、溫(wen)度控(kong)制(zhi)(zhi)儀及控(kong)制(zhi)(zhi)開關等。
溫(wen)度(du)(du)(du)控制(zhi)(zhi)主回路采(cai)用可控硅過(guo)零(ling)調功(gong)(gong)(gong)觸發,可控硅采(cai)用風冷形式,設有過(guo)載、過(guo)熱及過(guo)流保護等功(gong)(gong)(gong)能(neng)。溫(wen)度(du)(du)(du)控制(zhi)(zhi)儀表選(xuan)用先進(jin)的上(shang)海國(guo)龍智能(neng)高精度(du)(du)(du)數顯PID自整定型儀表,控制(zhi)(zhi)精度(du)(du)(du)±1℃。該溫(wen)度(du)(du)(du)控制(zhi)(zhi)配有熱電偶修正功(gong)(gong)(gong)能(neng)、功(gong)(gong)(gong)率限制(zhi)(zhi)功(gong)(gong)(gong)能(neng)及超溫(wen)報警功(gong)(gong)(gong)能(neng)。當(dang)爐門打開時自動(dong)切斷加熱主電路,實(shi)現聯鎖(suo)保護。
爐溫記錄采(cai)用南(nan)通達華(hua)記錄儀(yi),對升(sheng)溫及保溫時(shi)間過程(cheng)實時(shi)打印曲線(xian)、記錄溫度(du),同時(shi)對加熱(re)主回(hui)路實現監控作(zuo)用,有效地監視整(zheng)個生產工藝。