爐門框架采用槽鋼制作,側(ce)板(ban)和底板(ban)采用Q235鋼板(ban)焊接,結構(gou)牢固可靠,不(bu)易變(bian)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)(kong)制(zhi)(zhi)系(xi)統:主控(kong)(kong)系(xi)統控(kong)(kong)制(zhi)(zhi)柜(ju)采(cai)用國際流(liu)(liu)行(xing)立(li)式組(zu)合柜(ju)。控(kong)(kong)制(zhi)(zhi)柜(ju)外(wai)表(biao)噴涂電腦色或(huo)淺駝色。電控(kong)(kong)面(mian)板上(shang)裝有電流(liu)(liu)表(biao)、電壓(ya)表(biao)、溫度(du)控(kong)(kong)制(zhi)(zhi)儀及(ji)控(kong)(kong)制(zhi)(zhi)開關等。
溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)主(zhu)回路(lu)采用可控(kong)(kong)硅過(guo)零調(diao)功(gong)觸(chu)發,可控(kong)(kong)硅采用風冷(leng)形(xing)式,設有過(guo)載、過(guo)熱及(ji)過(guo)流保護等功(gong)能(neng)。溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)儀(yi)表選用先進(jin)的上海國龍智(zhi)能(neng)高精(jing)度(du)(du)數(shu)顯PID自(zi)整定型儀(yi)表,控(kong)(kong)制(zhi)(zhi)精(jing)度(du)(du)±1℃。該溫(wen)度(du)(du)控(kong)(kong)制(zhi)(zhi)配有熱電(dian)偶(ou)修正功(gong)能(neng)、功(gong)率限制(zhi)(zhi)功(gong)能(neng)及(ji)超溫(wen)報警功(gong)能(neng)。當(dang)爐門打開時自(zi)動切斷加熱主(zhu)電(dian)路(lu),實(shi)現(xian)聯鎖(suo)保護。
爐溫記錄采(cai)用南(nan)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,同時對加熱主(zhu)回(hui)路(lu)實現監控作用,有效地(di)監視整個生(sheng)產工藝。