If the building area is flat, fire regulations require spraying.

The design principle of fire sprinkler system is to determine the number and type of sprinklers according to the area of the use place and the objects that need fire prevention.

Number of nozzles

Generally, factories and entertainment places are equipped with a sprinkler every 10-20 square meters, while warehouses are relatively dense, with a sprinkler every 5- 10 square meters.

Species selection

You can choose different nozzles according to different places:

1, drooping spray head

Pendulous sprinkler is the most widely used sprinkler, which is installed on the water supply branch pipe in a pendulous way. Sprinkler is in the shape of a projectile, spraying 80 ~ 100% of the total water to the ground. Mainly used in places that do not need decoration, such as workshops, warehouses, parking garages, kitchens and other places.

2. Vertical nozzle

It is suitable to be installed in warehouses and other places where there are many moving objects and collisions are easy to occur, and it can also be hidden on the roof in the interlayer of the ceiling of the room to protect the top boron of the ceiling with more combustible substances.

The vertical spray head is vertically installed on the water supply branch pipe, and the spray head is parabolic, spraying 80 ~ 100% of the total water downward, and part of it is sprayed to the ceiling.

3. Ordinary nozzle

Suitable for restaurants, shops, warehouses, underground garages and other places. Ordinary sprinklers can be directly installed or hung on the sprinkler pipe network, spraying 40%-60% of the total water downwards and spraying a larger part to the ceiling.

4. Side wall nozzle

Suitable for places where it is difficult to lay pipelines. Side wall sprinklers are installed against the wall. It is mainly used in light dangerous parts of buildings such as offices, hallways, lounges and corridor rooms.

Extended data

principle of operation

Closed automatic sprinkler system

Usually, the roof fire water tank is filled with water. In case of fire, when the temperature of the sprinkler reaches a certain temperature (generally 68℃), the sprinkler will be chrome-plated and melted, and the water in the pipeline will automatically spray out under the action of the roof fire water tank. At this point, the wet alarm valve will automatically open, and the pressure switch in the valve will also automatically open. This pressure switch has a signal line interlocked with the fire pump, and the fire pump will start automatically. Then the spray pump supplies the water in the pool to the pipe network through the pipeline, and the whole fire fighting system starts to work.

Open automatic sprinkler system;

1. Some systems are equipped with smoke detectors to detect smoke. When the smoke reaches a certain concentration, the smoke detector will give an alarm, which will be fed back to audible and visual alarm for action after being confirmed by the upper computer, and sound or flashing lights will be given to warn people, and the smoke control and exhaust fan will be started to start smoking. At the same time, the solenoid valve of deluge valve will be opened, and the linkage spray pump will spray water directly.

2, have a sense of temperature to start working.

Baidu encyclopedia-automatic sprinkler system

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