3C fire fire exhaust and fire valve are important composition equipment in the channel. The two are assisted by each other, but the 3C fire smoke and firewood valve are connected together.Lets take a look at the principle of working!
1. 3C fire exhaust fan and firewood valve are connected through the module:
1. When there is no automatic alarm system, the fire valve of the main airway is connected to the intermediate relay of the fan control box, and the smoke exhaust fan locks.That is, there is no module between the 3C fire fire exhaust fan and the fire prevention valve.Generally, this fire valve is directly connected to the control box of the 3C fire exhaust fan. After the valve is turned off, the fire -fighting fan can be stopped by output contact signal to the control box.
2. When there is an automatic alarm system, the fire valve is connected to the signal module. When the main airway fire prevention valve is turned off, the alarm is alarm to link the smoke exhaust fan.Whether the module monitors the valve is closed.After the valve is turned off, the module transmits the feedback signal to the fire host. The host opens up through the logical relationship and stops the fire smoke exhaust fan.
3. Close the valve and stop the fan through the host.Generally, the two pairs of control modules are qualified, one pair is output contact or voltage signal, and the other is the feedback line.The valve output is 24V, and the feedback is passive input.The connection between the firewood valve and the smoke exhaust fan control circuit is connected in series at the normal closed contact of the limited switch at the 280 fire prevention valve operating handle.Once the fire valve moves, the limit switch often closed the contacts, the smoke discharge fan control circuit is disconnected, and the smoke exhaust fan immediately stops running.
Second, 3C fire fire exhaust fan and fire valve working principle
In general engineering, 280 firewood valve connects 3C fire exhaust fan, and the fire valve connection signal input module is usually turned on. When the fire temperature reaches 280, it is closed and issued a alarm signal. The alarm system linked to the smoke exhaust fan.The fire valve is located in the place where the smoke exhaust pipe passes through the firewall and the fireproof partition. Its role is to cut off the spread of flames and heat when the fire enters the pipeline.Fire fire exhaust fan is connected to the control module (input/output module) and locks with electrical isolation valves.When a fire occurs, the alarm system is turned off in advance, linking the exhaust port linkage, and linked the fire to smoke exhaust fan (first open the electrical insulation valve, then start the fan), and the feedback work status.
2. When a fire occurs, the input and output module is controlled, and the hood is stopped at normal closed.There is also a smoke and fire prevention valve, which is designed as a normal closed type.When the temperature of the flue gas reaches 280 degrees, the fuse of the smoke and fire prevention valve melted and the alarm was closed.In this way, the smoke exhaust fire prevention valve at the entrance of the smoke exhaust fan can be opened normally and blows off 280 degrees.
The 3C fire fire exhaust fan and the fire prevention valve are connected through the module. When the fire valve is connected to the signal module, when the main airway fire prevention valve is closed, the police will be alarmed and the tolerance of the smoke exhaust fan is connected. It is a coherent response. When a fire occursImportant role.
The above is about the connection method and working principle of the fan and the wind valve. If you want to learn more about related issues, please pay more attention to us- ——