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品牌 | 雙金 | 連接形式 | 其他 |
---|---|---|---|
材質 | 碳鋼,不銹鋼,鑄鐵,球墨鑄鐵 |
液動三通切換閥三通換(huan)向閥(fa)(fa)可以切(qie)換(huan)氣體流向,專(zhuan)門(men)(men)蓄(xu)熱式加熱燃氣使用(yong)的(de)專(zhuan)用(yong)閥(fa)(fa),適用(yong)于鋼鐵廠、冶金、化工(gong)、建材(cai)等行業中。三通切(qie)換(huan)閥(fa)(fa)在高壓、大口(kou)徑條件下(xia)減少了閥(fa)(fa)體自(zi)身的(de)連接(jie)螺栓,增強了閥(fa)(fa)門(men)(men)的(de)可靠性且能克服系統自(zi)重對閥(fa)(fa)門(men)(men)正常工(gong)作的(de)影響。
三通(tong)換向閥(fa)(fa)(fa)主要由閥(fa)(fa)(fa)體、閥(fa)(fa)(fa)板(ban)、上密封、電磁閥(fa)(fa)(fa)、過(guo)濾器等諸多零件(jian)構成,工作時(shi)電磁閥(fa)(fa)(fa)來控(kong)制氣缸內的變化來帶動活塞(sai)作往復運動,讓活塞(sai)桿上的兩塊閥(fa)(fa)(fa)板(ban)作上下移動,用來控(kong)制出氣口的開啟(qi)和關(guan)閉,當(dang)管(guan)道開啟(qi)時(shi),電磁閥(fa)(fa)(fa)得(de)電,當(dang)電磁閥(fa)(fa)(fa)失(shi)電的時(shi)候(hou)出氣管(guan)將自動關(guan)閉。
液動三通切換閥由于切換閥的動(dong)作是由電(dian)磁閥來控制的,除了注(zhu)(zhu)意(yi)選擇氣開、氣閉(bi)式,以(yi)防止氣源故障帶來危害(hai)之(zhi)外,還(huan)應注(zhu)(zhu)意(yi)電(dian)磁閥狀態與切換閥狀態的配合,以(yi)使(shi)電(dian)源發生故障時(shi)不(bu)致危及(ji)設備安全。現分別說明如下:
1、污氮(dan)切(qie)換閥。當四通(tong)電(dian)(dian)磁閥有電(dian)(dian)時(shi)(shi),切(qie)換閥關閉。失(shi)(shi)電(dian)(dian)時(shi)(shi),切(qie)換閥開(kai)。而且當電(dian)(dian)源失(shi)(shi)電(dian)(dian)時(shi)(shi),氣源失(shi)(shi)壓時(shi)(shi),也能借自(zi)重打開(kai)。從而保證了出現故障時(shi)(shi),上塔氣體能通(tong)過蓄冷器放空,不致造成超壓。
2、空氣切(qie)(qie)換(huan)閥(fa)(fa)(fa)。當四通電(dian)(dian)磁閥(fa)(fa)(fa)有電(dian)(dian)時(shi),切(qie)(qie)換(huan)閥(fa)(fa)(fa)打開。失電(dian)(dian)時(shi),切(qie)(qie)換(huan)閥(fa)(fa)(fa)關閉(bi)(bi)。當控(kong)制電(dian)(dian)源故(gu)障失電(dian)(dian)時(shi),切(qie)(qie)換(huan)閥(fa)(fa)(fa)關閉(bi)(bi);當控(kong)制氣源故(gu)障失壓時(shi),切(qie)(qie)換(huan)閥(fa)(fa)(fa)借自重關閉(bi)(bi),保證出現故(gu)障時(shi)原料空氣不進入空分(fen)塔。
3、污氮(dan)(純氮(dan))三通(tong)(tong)(tong)(tong)(tong)切(qie)(qie)換(huan)閥(fa)(fa)。四通(tong)(tong)(tong)(tong)(tong)電磁閥(fa)(fa)有(you)電,三通(tong)(tong)(tong)(tong)(tong)切(qie)(qie)換(huan)閥(fa)(fa)處(chu)于排送位置;四通(tong)(tong)(tong)(tong)(tong)電磁閥(fa)(fa)失電,三通(tong)(tong)(tong)(tong)(tong)切(qie)(qie)換(huan)閥(fa)(fa)處(chu)于放(fang)空(kong)位置。當(dang)(dang)電源(yuan)故障失電時,三通(tong)(tong)(tong)(tong)(tong)切(qie)(qie)換(huan)閥(fa)(fa)處(chu)于放(fang)空(kong)位置;當(dang)(dang)氣源(yuan)故障失壓時,三通(tong)(tong)(tong)(tong)(tong)切(qie)(qie)換(huan)閥(fa)(fa)能借(jie)自(zi)重處(chu)于放(fang)空(kong)位置。
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