閉式泡沫水噴淋滅火裝置屬于自動噴水和泡沫聯用滅火系統的一種類型。在原有的濕式自動噴水滅火系統基礎上增加了泡沫液供給裝置，既可以噴水，又可以噴泡沫。由于泡沫與火焰相遇時能產生封閉效應、冷卻效應、蒸汽效應等幾種滅火效應的綜合作用，故有良好的滅火效能。下面川消小編來講講閉式泡沫水噴淋滅火裝置的工作原理。

Closed foam water sprinkler is a type of automatic sprinkler and foam combined fire extinguishing system. On the basis of the original wet automatic sprinkler system, a foam liquid supply device is added, which can spray both water and foam. When foam meets the flame, it can produce a combination of sealing effect, cooling effect, steam effect and other fire extinguishing effects, so it has good fire extinguishing efficiency. Now let's talk about the working principle of the closed foam water sprinkler.

該滅火系統采用水成膜滅火劑或成膜氟蛋白泡沫滅火劑，這種泡沫滅火劑在易燃液體的表面形成一種水成膜作為屏障隔絕空氣，抑制易燃液體的表面氣體蒸發，因而提高了滅火效果，并且可以防止火災復燃，該滅火系統即節省了滅火用水，又提高了滅火效率，更適合用于水資源匱乏的地區。閉式泡沫-水噴淋滅火系統集中了濕式自動噴水滅火系統和泡沫滅火系統的優點，是更別的自動滅火系統，可以完全代替普通的水噴淋自動滅火系統，其滅火效果更好。

This fire extinguishing system uses aqueous film-forming extinguishing agent or film-forming fluoroprotein foam extinguishing agent. This foam extinguishing agent forms an aqueous film-forming agent on the surface of flammable liquid as a barrier to isolate air and inhibit the evaporation of surface gas of flammable liquid, thus improving the fire extinguishing effect and preventing the re combustion of fire. This fire extinguishing system not only saves fire extinguishing water, but also improves the fire extinguishing efficiency, which is more suitable for areas where water resources are scarce. The closed foam water sprinkler system combines the advantages of the wet automatic sprinkler system and the foam fire extinguishing system. It is a higher-level automatic fire extinguishing system and can completely replace the ordinary water sprinkler automatic fire extinguishing system. Its fire extinguishing effect is better.

工作原理:在備用狀態下，系統中各控制閥處于常態位置，并充滿穩定的壓力水(壓力為0.14-1.2Mpa)，系統壓力水通過泡沫罐供水管道14和供水控制閥13進入泡沫罐A的罐體和之間，內的水成膜泡沫液在囊外系統水壓的作用下，通過泡沫液斷流閥20壓入泡沫液控制閥的進口端。同時，系統壓力水通過控制管路進水球閥19、過濾器18、單向閥17、壓力泄放閥、控制管路26進入泡沫液控制閥的控制腔，使泡沫液控制閥處于關閉狀態，此時，系統處于備用狀態。

Working principle: under the standby state, each control valve in the system is in the normal position and filled with stable pressure water (pressure 0.14-1.2Mpa). The system pressure water enters between the tank body of foam tank A through the water supply pipeline 14 of the foam tank and the water supply control valve 13. Under the effect of the water pressure of the system outside the capsule, the water film-forming foam liquid inside is pressed into the inlet end of the foam liquid control valve through the foam liquid cut-off valve 20. At the same time, the system pressure water enters the control chamber of the foam concentrate control valve through the control pipeline inlet ball valve 19, filter 18, one-way valve 17, pressure relief valve and control pipeline 26, so that the foam concentrate control valve is closed. At this time, the system is in standby state.

當濕式報警閥處于伺應狀態時，整個系統充滿工作壓力的水，因定比減壓閥的作用，使泡沬液儲罐所提供的泡沬液壓力低于主管網內的水壓，此時，泡沬液能充滿整個泡沬液輸送管道，直泡沬比例混合器入口處，而由于混合器入口單向閥的隔離作用，管網內的水不能倒流進泡沬液管路內。

When the wet alarm valve is in a waiting state, the entire system is filled with water at working pressure. Due to the action of the proportional pressure reducing valve, the foam liquid pressure provided by the foam liquid storage tank is lower than the water pressure in the main pipeline. At this time, the foam liquid can fill the entire foam liquid delivery pipeline until it reaches the inlet of the foam proportioner. However, due to the isolation effect of the one-way valve at the inlet of the mixer, the water in the pipeline cannot flow back into the foam liquid pipeline.

當保護區內閉式噴頭因火災而爆破后，濕式報警閥系統側的壓力下降，報警閥打開，從報警口流出的水經過延遲器后驅動水力警鈴報瞥。同時該水流通過控制管路打開兩用控制閥(泡沬液控制閥)，將減壓閥短路，泡沬液儲罐內的壓力上升，使得泡沬液的壓力提升與主道管內的壓力相同，泡沫比例混合裝置按照一定的混合比流向噴頭，并通過已爆破的噴頭實施滅火。更多相關事項就來我們網站http://www.xintli.net咨詢！

When the closed nozzle in the protected area explodes due to a fire, the pressure on the wet alarm valve system side drops, the alarm valve opens, and the water flowing out of the alarm port passes through the delay device to drive the hydraulic alarm bell to sound. At the same time, the water flow opens the dual-use control valve (foam liquid control valve) through the control pipeline, shortens the pressure reducing valve, and the pressure in the foam liquid storage tank rises, making the pressure of the foam liquid rise to the same as that in the main pipeline. The foam proportional mixing device flows to the nozzle according to a certain mixing ratio, and extinguishes the fire through the exploded nozzle. For more related matters, come to our website http://www.xintli.net consulting service