As the names of the fire, the fire fire exhaust valve is used to block the passage of flue gas and flames from fire, and within a certain period of time, it can meet the valve that can meet the requirements of refractory stability and refractory integrity in a certain period of time.When the building occurs, the pipelines of the fire and the air -conditioning system spread rapidly, and there are many cases that cause major losses.In order to reduce the loss caused by the fire to a small level, effective fire prevention and smoke anti -discharge measures must be taken to control the spread of the fire.Important role.However, in many design projects, the phenomenon of the selection of fire -resistant smoke valve is wrong, and the unreasonable settings are common.
The fire -resistant smoke discharge valve is a valve that can meet the requirements of refractory stability and refractory integrity in a certain period of time to meet the fire resistance stability and refractory integrity requirements within a certain period of time.The action temperature is generally 280 ° C.If a fire occurs, the fire fire smoke discharge valve can be automatically or manually opened for smoke. When the temperature of the flue gas reaches or exceeds 280 ° C, the valve is automatically closed to prevent the fire from spreading.The smoke exhaust fan should still be able to work continuously for 30 minutes at 280 ° C.
The main function of fire fire smoke valve:
1. Frequently open fire fire smoke exhaust valve, the function is as follows:
1. Usually open state. When the fire occurs, the valve is kept open.
2. When the pipeline temperature reaches 280 ° C, the fuse is moved and the valve is automatically closed.
3. The output valve closed the signal, and the toxic exhaust fan stopped.
4. Manually turn off and turn on manually.
Second, the normal -closed fire fire smoke exhaust valve, the function is as follows:
1. Normally closed state. When the fire occurs, the control center enters the DC24V power supply, and the valve is quickly turned on.
2. The output valve opens the signal and locks the fire to smoke fans.
3. Manually open.Manually reset and close.
4. When the pipeline temperature reaches 280 ° C, the fuse is moved and the valve is closed again.
3. Remote control -type fire fire smoke exhaust valve (steel rope control type), the function is as follows:
1. Have all functions of constant closed fire firing smoke valve.
2. Can be turned on and closer manually.
3. Steel rope control distance standard is 6m (ultra -long).
Fourth, automatic reset fire fire smoke exhaust valve, the function is as follows:
1. Usually in a normal closed state. When the fire occurs, the DC24V power supply is entered by the control center. The valve is automatically turned on.
2. When the temperature of the pipeline is 280 ° C, the fuse moves and the valve is automatically closed.
3. Can be opened manually.
4. After the valve is turned on, no manual reset is required. As long as the DC24V power supply is entered, the valve can automatically reset to the original shutdown position (this function is before the temperature sensor is not moved..
5. The output valve opens the signal, and the lock controls the smoke exhaust fan start and stop.
6. If you use a memory alloy temperature device, you can use it repeatedly without replacement.
The above is the introduction of the function of fire fire smoke exhaust valves. I hope it can help you. If you want to know more about more information