WATER EXTINGUISHING SYSTEMS

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Spring Extinguishing Systems
The sprinkler consists of glass bulb and nozzle with chemical material. In case of pressurized water at the entrance of the nozzle, the glass bulb is broken due to the expansion of the chemical material with the temperature, and the pulverized atmosphere is discharged because the obstacle that closes the nozzle is left in the pressurized water.
Depending on the hazard class of the sprinkler installation, the protection area varies with the area.
Max. protection area;
- Less dangerous section: 21m2
- Medium dangerous section: 12m2
- The most dangerous part: 9m2
Min. water need;
- Less dangerous section: 2.51tdk./m2
- Medium dangerous section: 5lt / min. / M2
- The most dangerous section: 7.51 t / min. / M2
When the sprinkler system is designed, the architectural, electrical and mechanical equipments of the building are taken into consideration. A sprinkler system consists of a sprinkler, a piping system, a flow switch, an alarm valve station, a fire pump station and a water tank. Wet volume of sprinkler plant, machinery circles, etc. except in places where the above protection areas are attached to the tum areas.
Sprinklers are available in different types. Depending on their location;
- Looking up (upright)
- Looking down (pendent)
- Wall type (Sidewall)
According to diameters; 1/2 ", 3/4"
According to Orfis; 1/2 ", 17/32", 7/16 ", 3/4"
According to the temperatures; 57C, 68C, 79C, 141C, 183C
According to body material; brass, polished brass, white painted, black painted and chromed.
Depends on ceiling type; covered and rosette.
According to the active member; Bi-metal, glass bulb 8mm, glass bulb 2.8mm.
In addition to the standard type, there are sprinkler types such as sprinklers, wide area protected sprinklers, which are designed for use in rack systems.
For example; There is a special type of sprinkler that can be placed on the bathroom wall for hotel rooms. With this sprinkler, no installation is made in the room.
The flow switch located on the sprinkler system is installed on the basis of the partition and is used to receive electrical alarm by sensing the flow of water at the time of fire. Flow switches 0-90 sec to prevent false alarms.
Wet System: As a means of extinguishing, a sprinkler is used. There is continuous pressurized water in the system. In the event of a fire, the glass tube at the end of the sprinkler is exploded and water is pumped through the pipes and sprinkler. According to the investigations made, it has been observed that fire up to now has opened up to 13-14 sprinklers and controlled the fire. Installation distances of the sprinkler vary between 9 and 21 m2 depending on the hazard class
Deluge System: Open nozzle sprinkler is used as a means of extinguishing. There is no water in the water pipes. "DELUGE" valve is used as main valve. The pressurized water is present at the inlet of the dominant valve. When an alarm is received from the fire detection system, the valve is triggered and the water passes through the piping and is discharged to the atmosphere.
Preaction System: Sprinkler is used as a means of extinguishing. There is no water in the water pipes. "PRE-ACTION" valve is used as main valve. The pressurized water is present at the inlet of the valve as it is in the deluge system. The system waits for two triggers. If an alarm comes from the fire detectors, the valve is triggered and the water comes up to the sprinklers. Water will not drain out unless the sprinkler explodes. The same scenario applies first to the bursting of sprinklers. This time the valve is not triggered and the water is not discharged unless the alarm comes from the fire detector.

Water Fog Extinguishing Systems
Water is the oldest and most common extinguisher used in fire fighting. The water is an important extinguisher because of its high heat-cooling capacity and evaporation heat. In classical aqueous extinguishing systems, large amounts of water are required due to large droplets and low cooling surfaces, and disadvantages of extinguishing material to be extinguished have drawbacks. Water applications require very little water compared to classical aqueous extinguishing systems.
In the sprinkler system, it can form a protection surface of 2 m2 with 1 lt water, whereas water can create a protection surface of 200 m2 with 1 lt water in the application of water.
In water applications, water pressure of 85-200 bar is pulverized with special nozzles and discharged at high speed.
-Oxygen level falls to levels of 12-15%, creating a choking effect like INERT gasses.
Water Sisi Extinguishing systems, which have recorded significant increases in usage areas and references in the last few years, are now preferred in many applications. Similar to clean gasses, it extinguishes fires with the ability to absorb heat energy in the fire source. The cylinders are filled with 200 bar pressure Nitrogen gas. The auxiliary cylinders have pure water. Nitrogen gas from the pilot cylinder is directed to the auxiliary cylinder and directs the water to the nozzles in the environment to be quenched by pressurizing the water.

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