A60 Ship Pneumatic Fire Damper
A60 Ship Pneumatic Fire Damper consists of a steel plate partition and a pneumatic valve. The steel partitions are located inside the ventilation ducts and are used to isolate the different fire zones. The pneumatic damper is located outside the ventilation duct and is controlled by pneumatic pressure to open and close the steel plate.
Overview
Working Principle:
When a fire occurs, the source of the fire generates heat and pressure, which in turn causes the expansion and compression of gases. According to the law provided by Gaillard-Mario, the pressure of a gas is inversely proportional to its volume, so by increasing the pressure of the gas it is possible to reduce the size of the steel plate divider, thus quickly opening the pneumatic fire dampers. When the steel plate divider is opened, the airflow in the ventilation ducts is counter-current, thus creating a kind of airflow barrier that effectively stops the fire from spreading.
When a fire occurs, the source of the fire will spread outward through the ventilation duct, and in order to prevent the fire from spreading, the pneumatic fire damper needs to remain closed. Under normal conditions, the pneumatic damper is closed and the steel plate spacer fits closely to the ventilation duct to form an effective fire barrier.
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