What is the composition, working principle and characteristics of rain system?

The deluge system is an open automatic sprinkler system, and the sprinklers used in the system are open sprinklers. In case of fire, all sprinklers in the system protection area jointly spray water to extinguish the fire.

The deluge system usually consists of three parts: fire detection transmission control system; Automatic control group control valve system; Automatic sprinkler system with open nozzle. Among them, the fire detection transmission control system can use fire detectors, transmission pipe networks or fusible gold locks to start the group control action valves. Fire detector, transmission pipe network and fuse lock control belong to automatic control means. When using the automatic device, the manual device should be put aside. Deluge valve or deluge valve humidification alarm valve can be used in automatic control group action valve system. Rainwater system can be divided into empty pipe rainwater system and water-filled rainwater system. The fire extinguishing speed of water-filled deluge system is faster than that of empty pipe deluge system. In practical application, the appropriate form can be selected according to the requirements of the protected object. In practical application, the rain system may have many different forms, but its working principle is basically the same. The rain shower system adopts open nozzles, so water is sprayed simultaneously in the whole protected area. When there is a fire, the fire detection system senses the fire, controls the deluge valve to open, connects the water source and the rainwater pipe network, and the sprinkler drains water to extinguish the fire.

Raining system is suitable for severely dangerous building construction sites with intense combustion and rapid spread, such as the upper stage of the theater, large studios, film studios and so on. If the closed automatic sprinkler system is used in these buildings, once a fire breaks out, the sprinkler will be turned on only if the flame directly affects the sprinkler, and the speed of turning on the closed sprinkler is slower than the speed of fire spreading. Therefore, it is impossible to control the fire quickly.

(1) The deluge system responds quickly and is started by the fire detection and transmission control system. Because the time from the fire to the alarm of the fire detection and transmission control system is shorter than that of the closed sprinkler, the response time of the deluge system is much faster than that of the closed automatic sprinkler system. If the water-filled rain system is adopted, its reaction speed will be faster, which is more conducive to the fire extinguishing as soon as possible.

② The fire extinguishing control area of the system is large and the water consumption is large. The rain system uses open sprinklers. When a fire breaks out, all the sprinklers in the system protection area come out together to put out the fire, which can effectively control the fire and prevent it from spreading. The initial fire extinguishing water consumption is large, which helps to extinguish the fire quickly.

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