闭式泡沫----水喷淋灭火系统Closed foam water spray fire extinguishing system1. 闭式泡沫--水喷淋灭火系统是属于自动喷水--泡沫联用灭火系统中的一种类型。
它是在原有的湿式自动水喷淋灭火系统基础上增加了泡沫液供给装置，既可以喷水，又可以喷泡沫。
由于泡沫与火焰相遇时能够产生封闭效应、冷却效应、蒸汽效应等几种灭火效应的综合作用，故具有良好的灭火效能。
该灭火系统采用水成膜泡沫灭火剂或成膜氟蛋白泡沫灭火剂。
这种泡沫灭火剂在易燃液体的表面形成一种水成膜作为屏障而隔绝空气和氧气，并有能力抑制易燃液体的表面蒸发气体，因而提高了灭火效果，可以防止火灾复燃。
水喷淋系统因为增加了泡沫灭火剂，其灭火效果更好，节省了灭火用水，应用在缺水地区更有意义。
闭式泡沫--水喷淋灭火系统是更高级的自动水喷淋灭火系统，可以完全代替普通的自动水喷淋灭火系统，其灭火效果更好。
The closed foam water spray fire extinguishing system is one of the types of automatic water spray fire extinguishing system. On the basis of the original wet automatic water sprinkler system, it has added a foam liquid supply device, which can both spray and spray foam. Because of the comprehensive effects of several extinguishing effects such as blocking effect, cooling effect and steam effect when foam meets flame, it has good fire extinguishing efficiency. The fire extinguishing system adopts AFFF or fffp foam extinguishing agent. This kind of foam extinguishing agent in the surface of flammable liquids to form a water film as a barrier and cut off the air and oxygen gas, surface evaporation and suppress the flammable liquid capacity, thereby enhancing the fire extinguishing effect, can prevent the resurgence of. Because of the increase of foam extinguishing agent, the water spray system has better fire extinguishing effect and save the water for fire extinguishing. It is more meaningful in the area of water shortage. The closed foam water spray fire extinguishing system is a more advanced automatic water spray fire extinguishing system, which can completely replace the ordinary automatic water spray fire extinguishing system, and its fire extinguishing effect is better.2. 闭式泡沫----水喷淋灭火系统广泛用于地下汽车库以及存在较多可燃液体的场所。
例如装石油产品的码头、栈桥，易燃液体的储存仓库、卧式油罐、油泵房、燃油锅炉房、飞机维修库等。
该灭火系统具有迅速扑灭油类火灾的能力，灭火效率高，节约用水，设备投入费用低和维护、保养费用低等优点，故有很好的发展前景。
Closed foam - water spray fire extinguishing system is widely used in underground garage and places with more flammable liquids. For example, the dock of oil products, the Zhanqiao, the storage warehouse of flammable liquid, the horizontal oil tank, the oil pump room, the fuel boiler room, the aircraft maintenance warehouse and so on. The fire extinguishing system has the advantages of rapidly extinguishing oil fires, high efficiency of fire fighting, water saving, low investment in equipment and low maintenance and maintenance costs, so it has good prospects for development.3. 产品组成和灭火工作原理Components and work principle产品组成Components该灭火系统由①泡沫液储罐装置（包括泡沫液控制阀、定比减压阀、安全阀、液位计、控制阀、泡沫液输送管网等）；②压力式泡沫比例混合装置；③报警装置；④控制中心；⑤水流指示器；⑥末端试验装置；⑦喷头等组成。
The fire extinguishing system consists of ①the foam tank device (including foam liquid control valve, proportional pressure reducing valve, safety valve, liquid level meter, control valve, foam liquid pipelines etc.); ②the pressure foam proportioning device;③the alarm device; ④control center;⑤the water flow indicator; ⑥terminal test device⑦sprinkler head, etc..产品系统示意图:Diagram of the product system is as below:4.灭火工作原理闭式泡沫----水喷淋灭火系统的工作原理请阅产品系统示意图，当湿式报警阀处于伺应状态时，整个系统充满工作压力的水，因定比减压阀的作用，使泡沫液储罐所提供的泡沫液压力低于主管网内的水压，即通向比例混合器泡沫液输送管道内的压力比主管道内的水压低。
此时，泡沫液能充满整个泡沫液输送管道，直至泡沫比例混合器入口处，但由于单向阀的隔离作用泡沫液不会进入主管道的管网内。
当保护区内某处发生火灾时，使一个以上的洒水喷头受热爆破而喷水（或检查试验时打开末端试验装置）。
湿式报警阀系统侧的压力下降，在压差的作用下，湿式报警阀的阀瓣被推离座圈而开启，供水侧的水不断地流入系统侧，对系统管网进行补水。
湿式报警阀被打开后，从报警口流出来的水经过延迟器后驱动水力警铃进行报警。
同时该水流通过控制管路打开两用控制阀（泡沫液控制阀），使减压阀失效，泡沫液储罐内的压力上升，使得泡沫液的压力提升至与主管道内的压力相同，泡沫比例混合器进入正常工作状态，只要水流量达到比例混合器规定的最小流量时，就能够输出符合规定混合比（3%～3.9%或 6.0%～7.0%）的泡沫混合液，满足喷头灭火的需要。
该系统是一套完整的自动喷水灭火系统，具有自动喷水灭火系统的全部功能，并且符合泡沫灭火系统的功能要求。
本系统采用的是闭式自动洒水喷头，不具备吸气发泡功能，因此，只能采用水成膜泡沫液或成膜氟蛋白泡沫液，泡沫比例混合器装置的泡沫液储罐采用带有橡胶皮囊的储罐。
Closed -foam water sprinkler working principle diagram system please refer to the product system, when the wet alarm valve in the red state, the whole system is full of working pressure of water, because the fixed ratio pressure reducing valve, the fluid pressure foam foam tank provided below thehead pressure within the network, which leads to the proportion of mixer foam liquid conveying pipe pressure in the main pipeline is low pressure ratio. At this point, the foam liquid can fill the entire foam liquid delivery pipe until the foam ratio enters the mouth of the mixer, but due to the isolation effect of the one-way valve, the foam liquid will not enter the main pipe network. When a fire occurs somewhere in the reserve, more than one sprinkler is heated by blasting and sprinkled (or the end test device is opened in the test). The pressure drop on the side of the wet alarm valve system, under the action of pressure difference, the disc of the wet alarm valve is pushed away from the seat ring, and the water on the side of the water supply continuously flows into the side of the system to replenish the system pipe network. After the wet alarm valve was opened, the water from the alarm was passed through the retarder to drive the hydraulic alarm. At the same time, the water flow through the control valve (control line open dual-purpose foam liquid control valve), the valve failure, foam tank pressure rise inside the foam to enhance the pressure and the main pipeline pressure within the same foam proportioner in normal working condition, only to the minimum flow water flow reaches the prescribed proportion mixer when the output can comply with the provisions of the mixing ratio (3% ~ 3.9% or 6% ~ 7%) of the foam mixture, to meet the needs of the fire sprinkler. The system is a complete automatic sprinkler system, which has all functions of sprinkler system and meets the functional requirements of foam extinguishing system. This system adopts the closed automatic sprinkler, does not have the air foaming function, therefore, can only use the AFFF liquid or film-forming fluoroprotein foam, foam tank foam proportioner device using storage tank with rubber bladder.5.系统主要性能及技术参数 PHY系列Performance and technical parameter of Serial PHY压力式泡沫比例混合装置规格型号Pressure type foam proportion mixing device specification model泡沫液储罐容量Capacity of foam tank卧式Horizontal：0.6; 0.8; 1; 1.5; 2; 3; 4; 5.5m立式Vertical：0.6; 0.8; 1; 1.5; 2; 3; 3.5m主要性能 Main performance(1) 湿式系统自喷水至喷泡沫的转换时间，按流量计算，不应大于The conversion time of the wet system from the spray to the foam is calculated according to the flow rate, and it should not be greater than the flow rate.(2) 泡沫比例混合器在流量等于和大于时符合水与泡沫灭火剂混合比的规定；Foam proportioner in flow is equal to and greater than when the water and foam fire extinguishing agent with specified mixing ratio;(3) 持续喷泡沫混合液的时间大于。