280度防火排煙閥CCC認證概述:
280℃防(fang)(fang)火(huo)(huo)閥(fa)用在排(pai)煙系(xi)統管道上(shang),平時(shi)常(chang)開,發生火(huo)(huo)災時(shi)排(pai)煙,當煙氣溫(wen)度達(da)到(dao)280℃時(shi),防(fang)(fang)火(huo)(huo)閥(fa)關(guan)閉。連鎖風(feng)機(ji)關(guan)閉。排(pai)煙系(xi)統的防(fang)(fang)火(huo)(huo)閥(fa)是在火(huo)(huo)災時(shi)排(pai)煙的,煙氣溫(wen)度較高,到(dao)280℃時(shi),這個(ge)火(huo)(huo)災通過(guo)機(ji)械風(feng)已達(da)不到(dao)效果了(le),排(pai)煙閥(fa)關(guan)閉防(fang)(fang)止風(feng)機(ji)等涉(she)筆損壞。
280度防火排煙閥CCC認證施工要求(qiu);
1. 防火閥(fa)可(ke)與通風機、排(pai)煙風機聯鎖(suo)。
2. 閥門的(de)操作機構一側應有不小于200mm 的(de)凈(jing)空間以利檢修。
3. 安(an)裝閥(fa)門(men)前必須(xu)檢查閥(fa)門(men)的操作機構是(shi)否完(wan)好,動作是(shi)否靈(ling)活有效。
4. 防火閥應安裝在緊靠墻或樓板的風管管段中(zhong),防火分區隔墻兩(liang)側的(de)防火(huo)閥距(ju)墻表面不(bu)應大于200mm,防火(huo)閥兩(liang)側各(ge)2.0m范圍內(nei)的(de)管(guan)道及其絕熱材(cai)料應采用不燃材料。
5. 防火閥應單獨設(she)支吊(diao)架,以防止發生火災時管道變形影響其性能(neng)。
6. 防火(huo)閥的熔斷片應裝在朝(chao)向火(huo)災危險性較大的一側。
溫感器(qi)控(kong)制(zhi)情況:排煙(yan)防火(huo)(huo)閥應具備溫感器(qi)控(kong)制(zhi)方(fang)式,使其自(zi)動(dong)(dong)關閉(bi)。排煙(yan)防火(huo)(huo)閥的(de)溫感器(qi)在(zai)(zai)250℃±2℃恒溫油(you)浴鍋(guo)中5min內(nei)不(bu)(bu)動(dong)(dong)作(zuo)。在(zai)(zai)285℃±2℃恒溫油(you)浴鍋(guo)中2min內(nei)不(bu)(bu)動(dong)(dong)作(zuo)。排煙(yan)防火(huo)(huo)閥應具備手動(dong)(dong)關閉(bi)功能,手動(dong)(dong)操作(zuo)方(fang)便靈活,可靠。
閥門執行機(ji)構中電(dian)(dian)(dian)(dian)(dian)(dian)控電(dian)(dian)(dian)(dian)(dian)(dian)路的工作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓宜采用DC24V的額定(ding)(ding)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓。其(qi)額定(ding)(ding)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)流應(ying)不大于(yu)0.7A。在(zai)實際電(dian)(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)(dian)壓低于(yu)額定(ding)(ding)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓15%和高于(yu)額定(ding)(ding)工作(zuo)(zuo)電(dian)(dian)(dian)(dian)(dian)(dian)壓10%時,閥門應(ying)能(neng)正常進行電(dian)(dian)(dian)(dian)(dian)(dian)控操作(zuo)(zuo)。
排(pai)煙(yan)防火閥(fa)(fa)經過50次的開關試(shi)驗后,各(ge)零部件應無明顯變形,磨損及(ji)其(qi)他影響其(qi)密(mi)封性能(neng)的損傷,葉片乃能(neng)從打開位置靈活可靠地關閉。經過5個周期,共120h鹽霧腐蝕試(shi)驗后,閥(fa)(fa)門應能(neng)正常啟閉。