Valve control device for fire-extinguishing piping
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United States of America Patent
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Oct 31, 2017
Grant Date -
Oct 20, 2016
app pub date -
Jun 22, 2015
filing date -
Apr 20, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A valve control device for fire-extinguishing piping includes a deluge valve whose water-pressure control chamber is connected to a water inlet manifold and a water outlet manifold. The water outlet manifold has an adjustable-pressure valve, a constant-pressure valve, and a switch valve. The water inlet manifold guides fire-extinguishing water to the water-pressure control chamber for pressure accumulation. The water outlet manifold guides the fire-extinguishing water in the water-pressure control chamber to the water outlet passage. The water outlet manifold controls when the fire-extinguishing water is discharged using the switch valve. The constant-pressure valve performs first water-pressure control on the fire-extinguishing water in the water-pressure control chamber and in the water outlet manifold. The adjustable-pressure valve performs second water-pressure control on the fire-extinguishing water in the water-pressure control chamber and in the water outlet manifold, thereby preventing pressure drop, fluid hammer, and water outage during a power failure.
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