爐門(men)框架(jia)采(cai)用(yong)槽鋼(gang)制(zhi)作,側板和底板采(cai)用(yong)Q235鋼(gang)板焊接,結構(gou)牢(lao)固可靠,不易變形和翹曲,整體強度好(hao)。
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。
控制(zhi)(zhi)系統:主控系統控制(zhi)(zhi)柜(ju)采用國(guo)際流行立式組(zu)合柜(ju)。控制(zhi)(zhi)柜(ju)外表噴涂(tu)電(dian)腦色或淺(qian)駝色。電(dian)控面(mian)板上裝(zhuang)有電(dian)流表、電(dian)壓表、溫(wen)度(du)控制(zhi)(zhi)儀及控制(zhi)(zhi)開關等。
溫(wen)(wen)度控(kong)(kong)制(zhi)主(zhu)回路采用(yong)可控(kong)(kong)硅(gui)(gui)過(guo)(guo)零調功(gong)(gong)觸發,可控(kong)(kong)硅(gui)(gui)采用(yong)風冷(leng)形式(shi),設有過(guo)(guo)載、過(guo)(guo)熱(re)(re)及(ji)過(guo)(guo)流保護等功(gong)(gong)能(neng)(neng)。溫(wen)(wen)度控(kong)(kong)制(zhi)儀表選(xuan)用(yong)先進的上海國龍智能(neng)(neng)高精度數顯(xian)PID自整定型儀表,控(kong)(kong)制(zhi)精度±1℃。該溫(wen)(wen)度控(kong)(kong)制(zhi)配有熱(re)(re)電偶修正(zheng)功(gong)(gong)能(neng)(neng)、功(gong)(gong)率限制(zhi)功(gong)(gong)能(neng)(neng)及(ji)超溫(wen)(wen)報警功(gong)(gong)能(neng)(neng)。當爐(lu)門(men)打開(kai)時自動切斷加熱(re)(re)主(zhu)電路,實現聯鎖保護。
爐(lu)溫(wen)記(ji)錄(lu)采(cai)用(yong)南通達華記(ji)錄(lu)儀,對升溫(wen)及保溫(wen)時間過程(cheng)實時打印曲線、記(ji)錄(lu)溫(wen)度(du),同(tong)時對加(jia)熱主回路(lu)實現(xian)監控(kong)作用(yong),有效地(di)監視整(zheng)個生(sheng)產工藝(yi)。