1.安裝在排煙系統(tǒng)管路上,平時(shí)一般呈關(guān)閉狀態(tài),火災(zāi)時(shí)手動或電動開啟,起排煙作用.當(dāng)排煙管道內(nèi)煙氣溫度達(dá)到280℃時(shí)關(guān)閉,在一定時(shí)間內(nèi)能滿足耐火穩(wěn)定性和耐火完整性要求,起排煙作用的閥門.

　　1. smoke extraction system installed in the pipeline, usually in a closed state, when the fire manual or electric open up smoke. When close the exhaust pipe, the flue gas temperature reached 280 degrees, in a certain period of time to meet the fire stability and fire integrity requirements, since the exhaust effect of the valve.

　　2.常閉型排煙防火閥(常閉,電訊號開啟,280度熔斷關(guān)閉,或手動關(guān)閉)一般應(yīng)用于排煙系統(tǒng)中,可在排煙風(fēng)機(jī)吸入口安裝一個(gè),火災(zāi)時(shí)由消控室控制開啟,關(guān)閉時(shí)也可連鎖關(guān)閉該排煙風(fēng)機(jī).

　　2. normally closed type smoke damper (normally closed, open telecommunications number, 280 degrees blown off, or manually shut down) is generally used in the exhaust system, the suction exhaust fan installed a fire control room control by the consumer to open, closed when the chain to close the exhaust fan.

　　3.排煙閥,各個(gè)單位叫法不同,有的根據(jù)它的動作溫度叫做排煙閥,有的根據(jù)它的用途性質(zhì)叫做防火閥,但是對于設(shè)備方只是把普通防火閥的熔斷金屬換成280度熔斷的那一種.

　　3. exhaust valve, the various units of different names, some called according to its operating temperature of exhaust valve, depending on the nature of its use is called the fire valve, but only for the equipment side of the ordinary damper fuse metal into the a 280 fuse.

　　施工安裝

　　Construction installation

　　1. 防火閥可與通風(fēng)機(jī)、排煙風(fēng)機(jī)聯(lián)鎖.

　　1. fire dampers can be interlocked with ventilators and smoke exhaust fans

　　2. 閥門的操作機(jī)構(gòu)一側(cè)應(yīng)有不小于200mm 的凈空間以利檢修.

　　2., the valve side of the operating mechanism should be no less than 200mm of the net space in order to facilitate the overhaul

　　3. 安裝閥門前必須檢查閥門的操作機(jī)構(gòu)是否完好,動作是否靈活有效.

　　3., before installing the valve, you must check the valve operating mechanism is intact, the action is flexible and effective

　　4. 防火閥應(yīng)安裝在緊靠墻或樓板的風(fēng)管管段中,防火分區(qū)隔墻兩側(cè)的防火閥距墻表面不應(yīng)大于200mm,防火閥兩側(cè)各2.0m范圍內(nèi)的管道及其絕熱材料應(yīng)采用不燃材料.

　　4. fire safety valve should be installed in the pipe against the wall or floor wind section, fire valve fire partition walls on both sides of the distance from the wall surface should be no more than 200mm, the pipeline fire valve on both sides of the 2.0m range and the insulation material used should be made of non combustible materials.

　　5. 防火閥應(yīng)單獨(dú)設(shè)支吊架,以防止發(fā)生火災(zāi)時(shí)管道變形影響其性能.

　　5. fire dampers shall be provided with separate hangers to prevent pipe deformation during fire and affect its performance

　　6. 防火閥的熔斷片應(yīng)裝在朝向火災(zāi)危險(xiǎn)性較大的一側(cè).

　　6. the fuse shall be mounted on the side of the fire that is dangerous

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