280 ° C to smoke fire prevention valve working principle
Usually the low -speed work of a dual -speed high -temperature fan at a low speed to meet the air exhaust air volume. When the fire occurs, the high -temperature smoke exhaust fan automatically runs automatically at high speed under the action of linking the control cabinet to meet the needs of smoke discharge.The smoke prevention valve and the smoke and fire prevention valve of the fire prevention valve and the air -replenishment pipeline do not move to smoke and replenish the air. Under the action of a fully automatic smoke fire -exhaust fire prevention valve in other smoke -proof partitions, when the temperature of the flue gas reaches 280 ° C, the fullAutomatic smoke fire prevention valve will be automatically closed, and smoke exhaust bans and replenish doughs are automatically stopped.
The 280 -degree fire valve connection signal input module is usually turned on. When the temperature reaches 280 degrees during the fire, a alarm signal is issued. The alarm system should be linked to the fan.The 280 -degree fire prevention valve is located on the firewall and fire prevention partition of the smoke exhaust pipeline. The role is to cut off the spread of flames and heat when the fire is in the pipeline.
Tobacco exhaust fan and 280 ° C to smoke fire prevention valve linkage work requirements
Tobacco exhaust fan connection control module (input and output module), chain such as electric heating valve, etc. During the fire, the alarm system shuts down the usual exhaust in advance, connects the smoke exhaust port, and linked to start the smoke exhaust fan (first open the electric insulation valve), And feedback the working status.
The temperature of the smoke and fire fire valve and fire fire exhaust fan of the smoke discharge prevention valve is not synchronized. When the smoke discharge fire prevention valve is closed, the fire fire exhaust air can be closed. By 280 degrees fireproof valve, the signal must be turned on by the input module to control the controller and control it.Tobacco exhaust fan stops.Prevent fires from spreading through the smoke exhaust pipes to other fireproof partitions.
However, in the previous period of time, fire fire exhaust fan has been running at 280 ° C at high temperature. As for 30min, it is not to say that smoke fire prevention valves are not linked to smoke exhaust fans, but the requirements for the quality of the fan.It was closed by itself without reaching the movement temperature (for example, just a critical 280 °), which affected normal smoke.
The above editor is right
How to link with smoke fire prevention valve
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