Leakproof draft system pressure/vacuum relief device for power plants
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United States of America Patent
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Issued Date -
Jan 22, 2009
app pub date -
Jul 9, 2008
filing date -
Jul 17, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Methods and apparatus are disclosed for alleviating or modulating periodic sudden pressure changes in a gas ducting system by fluidically connecting a gas duct to one side of a partitioned, liquid-filled reservoir, the other side of which comprises a stack conduit venting to the ambient environment. With this configuration, elevated gas duct pressure displaces liquid from the reservoir up into the stack conduit to a height above the reservoir and thereby helps to alleviate the elevated duct or system pressure, without leaking process gases from the duct through the reservoir and into the environment. Reduced gas duct pressures or vacuum-like conditions in the duct draws ambient air through the stack conduit and the reservoir and then into the duct to help alleviate the reduced duct or system pressure.
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