爐門框架(jia)采用(yong)槽鋼制作,側板(ban)和(he)底(di)板(ban)采用(yong)Q235鋼板(ban)焊接,結(jie)構牢(lao)固(gu)可靠,不易變(bian)形和(he)翹曲,整(zheng)體(ti)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。
控制系(xi)統:主控系(xi)統控制柜(ju)(ju)采(cai)用國(guo)際流(liu)行立式組合柜(ju)(ju)。控制柜(ju)(ju)外表(biao)噴涂電(dian)腦色或(huo)淺駝色。電(dian)控面(mian)板(ban)上裝有電(dian)流(liu)表(biao)、電(dian)壓表(biao)、溫(wen)度控制儀及控制開(kai)關(guan)等(deng)。
溫(wen)(wen)(wen)度(du)(du)控制主(zhu)回路(lu)采用(yong)(yong)可(ke)(ke)控硅過零調功(gong)(gong)(gong)觸發,可(ke)(ke)控硅采用(yong)(yong)風冷形(xing)式,設有(you)過載、過熱及過流保護(hu)等功(gong)(gong)(gong)能。溫(wen)(wen)(wen)度(du)(du)控制儀(yi)表選用(yong)(yong)先(xian)進的上(shang)海國龍智(zhi)能高精(jing)度(du)(du)數顯PID自整(zheng)定型儀(yi)表,控制精(jing)度(du)(du)±1℃。該溫(wen)(wen)(wen)度(du)(du)控制配有(you)熱電偶修(xiu)正功(gong)(gong)(gong)能、功(gong)(gong)(gong)率限制功(gong)(gong)(gong)能及超溫(wen)(wen)(wen)報警功(gong)(gong)(gong)能。當(dang)爐(lu)門(men)打(da)開時自動切斷(duan)加熱主(zhu)電路(lu),實現聯鎖保護(hu)。
爐溫記(ji)錄(lu)(lu)采用(yong)南通達華記(ji)錄(lu)(lu)儀(yi),對(dui)升溫及保(bao)溫時間(jian)過程實時打(da)印曲(qu)線、記(ji)錄(lu)(lu)溫度,同(tong)時對(dui)加熱主(zhu)回路(lu)實現監(jian)(jian)控作用(yong),有效地監(jian)(jian)視(shi)整個生產工藝(yi)。