爐(lu)門框架采用槽(cao)鋼(gang)制作,側板和底板采用Q235鋼(gang)板焊接,結構(gou)牢固可靠,不易變形(xing)和翹(qiao)曲(qu),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。
控制(zhi)系統:主控系統控制(zhi)柜(ju)采用國際流行立式組合柜(ju)。控制(zhi)柜(ju)外表噴(pen)涂(tu)電腦(nao)色或淺(qian)駝(tuo)色。電控面(mian)板上裝有電流表、電壓表、溫(wen)度控制(zhi)儀及(ji)控制(zhi)開(kai)關(guan)等。
溫度(du)(du)控(kong)(kong)(kong)(kong)制主回(hui)路(lu)(lu)采用(yong)可控(kong)(kong)(kong)(kong)硅過零調功(gong)(gong)觸發(fa),可控(kong)(kong)(kong)(kong)硅采用(yong)風冷形(xing)式,設有過載、過熱(re)及(ji)過流保護(hu)等功(gong)(gong)能。溫度(du)(du)控(kong)(kong)(kong)(kong)制儀(yi)表選(xuan)用(yong)先進的(de)上(shang)海國龍智能高精度(du)(du)數顯PID自(zi)整定型儀(yi)表,控(kong)(kong)(kong)(kong)制精度(du)(du)±1℃。該溫度(du)(du)控(kong)(kong)(kong)(kong)制配有熱(re)電(dian)偶修正功(gong)(gong)能、功(gong)(gong)率限制功(gong)(gong)能及(ji)超溫報警(jing)功(gong)(gong)能。當(dang)爐門打開時自(zi)動切斷(duan)加熱(re)主電(dian)路(lu)(lu),實現聯鎖保護(hu)。
爐溫(wen)(wen)記錄采用(yong)南通達華(hua)記錄儀,對升溫(wen)(wen)及保溫(wen)(wen)時(shi)間過(guo)程(cheng)實(shi)(shi)時(shi)打(da)印曲線、記錄溫(wen)(wen)度(du),同時(shi)對加(jia)熱主回路(lu)實(shi)(shi)現監控作用(yong),有效地監視(shi)整個(ge)生(sheng)產工藝。