1.安装在91短视频网站入口系统管路上,平时一般呈关闭状态,火灾时手动或电动开启,起91短视频网站入口作用.当91短视频网站入口91短视频三级片内烟气温度达到280℃时关闭,在一定时间内能满足耐火稳定性和耐火完整性要求,起91短视频网站入口作用的阀门.

　　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.常闭型91短视频网站入口防火阀(常闭,电讯号开启,280度熔断关闭,或手动关闭)一般应用于91短视频网站入口系统中,可在91短视频网站入口风机吸入口安装一个,火灾时由消控室控制开启,关闭时也可连锁关闭该91短视频网站入口风机.

　　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.

　　3.91短视频网站入口阀,各个单位叫法不同,有的根据它的动作温度叫做91短视频网站入口阀,有的根据它的用途性质叫做防火阀,但是对于设备方只是把普通防火阀的熔断金属换成280度熔断的那一种.

　　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.

　　施工安装

　　Construction installation

　　1. 防火阀可与通风机、91短视频网站入口风机联锁.

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

　　2. 阀门的操作机构一侧应有不小于200mm 的净空间以利检修.

　　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. 安装阀门前必须检查阀门的操作机构是否完好,动作是否灵活有效.

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

　　4. 防火阀应安装在紧靠墙或楼板的风管管段中,防火分区隔墙两侧的防火阀距墙表面不应大于200mm,防火阀两侧各2.0m范围内的91短视频三级片及其绝热材料应采用不燃材料.

　　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. 防火阀应单独设支吊架,以防止发生火灾时91短视频三级片变形影响其性能.

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

　　6. 防火阀的熔断片应装在朝向火灾危险性较大的一侧.

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

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