Common water fire extinguishing system setting principles

The rain sprinkler system is suitable for some serious dangerous grade places where the burning is fierce and spreads rapidly.

“Building Design Fire Protection Code” Article 8.3.7 of GB50016-2014 stipulates that the following sites shall be provided with automatic sprinkler fire sprinkler system:

1. Factory of Potassium Chlorate Mill Grinding Factory with a building area of ​​more than 100m2 and production or use of nitrocellulose, spray-painted cotton, collodion cotton, cellophane film, and nitrocellulose;

2. Rolling blanks, slicing, grinding balls, ball inspection parts of the table tennis factory;

3. Warehouses of nitrocellulose, spray-painted cotton, collodion cotton, cellophane film, and nitrocellulose with a building area greater than 60 ? or a storage capacity greater than 2 tons;

4. Bottling room and real bottle library of liquefied petroleum gas storage and distribution stations with more than 3,000 bottles per day ;

5. The lower part of the trellis at the Principality, A stage, other grade theatres with more than 1,500 seats, and the auditorium or auditorium with more than 2,000 seats;

6. A studio with a building area of ​​not less than 400 meters , a movie studio with a building area of ​​not less than 500 meters .

We frequently asked question is: rain, wet, dry, pre-action difference between the various systems and Applications briefly described here as follows -?

The shower system uses open sprinklers, and the rest use closed sprinklers. When the deluge system is in motion, all sprinklers will act when the deluge valve is opened, either in a place where the fire spreads rapidly or where the height exceeds the protection of the closed sprinkler. Such as stage, studio.

The wet system is the most common place. The temperature of the use site is 4-70 degrees, and there is a place where the water stain is not high.

The dry system is used in a normal place and can be used in places where the temperature is lower than 4 degrees or higher than 70 degrees. Such as a freezer, or a processing plant. The fire extinguishing system has a time lag.

The preaction system is based on the dry system and is linked to the fire detection system. After the detector is activated, the dry system is converted to a wet system.

The water curtain system is mainly used for fire isolation and cannot directly extinguish the fire.

“Building Design Fire Protection Code” Article 8.3.6 of GB50016-2014 stipulates that the following parts of the water curtain system should be set up:

1. Principal, A-level theater, more than 1500 seats of other grades of theater, more than 2000-seat auditorium and halls or senior than the theater or auditorium of 800 seats and above the mouth of the stage and stage spaces connected in the civil construction Side and back holes;

2. Partial openings that cannot be set by fireproof partitions such as firewalls;

3. The need to protect the cooled fire shutter or the upper part of the fire screen.

Note: The stage mouth can also be separated by a fireproof screen. The second stage fire damper and window should be set in the smaller holes on the side table and backstage.

The water spray fire extinguishing system atomizes water and is generally used for fighting fires such as transformers.

“Building Design Fire Protection Code” Article 8.3.8 of GB50016-2014 stipulates that the following places shall be equipped with an automatic sprinkler system, and a water spray fire extinguishing system shall be adopted:

Single capacity 40MV · A and above oil-immersed transformer factories and mines, in the capacity of a single 90MV · A more oil power plants and transformers, single capacity 125MV · A and above oil-immersed transformer substation independent;

Test engine parts of aircraft engine test bench;

High-pressure capacitors and multi-fuel switch rooms filled with combustible oil and installed in high-rise civil buildings.

Note: The water mist immersed transformer, the high-pressure fuel-storage capacitor, and the multi-fuel switch room installed in the room can adopt a water mist fire extinguishing system.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.