Application of Paperless Recorder in Building Fire Alarm System

According to fire codes, temperature detectors, manual alarms, and fire alarm broadcasts are installed in underground garages; smoke detectors, manual alarms are installed in podium shopping malls, banks, entertainment venues, etc., and speakers are used for usual background music. , Emergency broadcast when fire. In high-rise residential areas, smoke detectors, manual alarms, and emergency broadcasting devices are placed in public places such as elevator front rooms and public hallways. Paperless recorders are equipped with alarm flashing lights (or sound and light alarms) on the doors of all floors of staircases. , Smoke detectors are installed in the bedrooms, study rooms, and living rooms of high-class residences. Fire hydrant emergency start pump button is installed in all public places fire hydrant boxes.

1. Rolling shutter control:

When the smoke detectors on both sides of the roller shutter door in the fireproof channel call the police, the system controls the roller shutter door to drop to 1.8m away from the ground to block the smoke and allow people to evacuate. When the temperature detectors on both sides of the roller shutter door alarm, the system controls the roller shutter door to descend to the ground to complete the separation of the fire zone. On both sides of the rolling shutter, there are also buttons for controlling the lifting and lowering of the rolling shutter door, and a function for automatically placing the rolling shutter door after the time delay is maintained (1-30 seconds adjustable).

2. Elevator landing system:

When it is confirmed that a fire has occurred, the system immediately forces all elevators to the first floor and automatically cuts off the power supply of the passenger and cargo elevators, leaving only the fire elevators for use by firefighters.

3, smoke prevention system:

When the system confirms that there is a fire, immediately open the fire floor and its upper and lower positive pressure air supply valve (mouth), and automatically open the top of the corresponding pressurized fan, so that the front room passage is positive pressure to prevent smoke intrusion, guarantee Environmental safety at the time of evacuation. There are normally-closed fire smoke exhaust valves (mouths) in each floor corridor, basement, and no-window rooms. In the event of a fire, the colorless paperless recorder can automatically or manually open the fire exit and exhaust valves (mouth) in the fire area, and at the same time, The exhaust fan is started. When the temperature of the fire exhaust outlet in front of the top-level exhaust fan reaches 280°C, the valve is closed and the linkage exhaust fan is also closed.

4, other linkage control:

When it is confirmed that a fire has occurred, the system will manually/automatically start the fire floor and its upper and lower alarm flashing lights or audible and visual alarms to remind people in the building to evacuate in time and manually cut off the fire floor and the fire floor from the fire duty room. Lower non-fire power.

In the underground garage, there is a sprinkler pre-action system. The water sprinkler adopts a closed nozzle and the water pipe is filled with air. When the temperature detector alarms, the system automatically/manually opens the electromagnetic valve on the water pipe and fills the water. When the nozzle is broken, the water pipe is placed. Gas, trunk pressure switch action, signal return to the fire duty room automatically / manually start the spray pump, and monitor its operating status.

5, water fire extinguishing system:

When the fire hydrant button is activated, the system can automatically/manually start and stop the hydrant pump and monitor its operating status. The pressure switch on the water spray pipe works, and the system can automatically start the spray pump and monitor its operating status.

A water spray fire extinguishing system is set up in the underground gas boiler room. The water sprinkler adopts an open nozzle and a group of smoke and temperature detectors are set in the room. When the smoke detector and temperature detector alarm at the same time, the system can open the rain solenoid valve through three methods: automatic, manual and emergency operation. After the pressure switch is actuated, the system starts the spray pump and monitors its operating status.

6, fire accident broadcast system:

After the system confirms a fire, the monochrome paperless recorder system can automatically cut off the background music broadcast, or manually control the fire control room control cabinet, connect the fire floor and the upper and lower speakers for emergency broadcast to guide the building personnel evacuation.