Ejector valve with glands
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United States of America Patent
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Nov 13, 2012
Grant Date -
Oct 6, 2011
app pub date -
Apr 6, 2010
filing date -
Oct 26, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A fast opening pressure relief valve (200) for providing pressure relief for a vessel. The valve (200) has an ejector (216) and a sleeve structure (210) in which the ejector (216) moves longitudinally. The ejector (216) is constructed of material that will expand outward slightly upon pressurization, increasing friction between staging glands (202) provided on the sleeve structure (210) and buckling glands (206) provided on the ejector (216). Also, as pressure on the ejector (216) increases, the buckling rings (206) deform slightly to release their grip on the staging glands (202) and move past them. Once the buckling rings (206) move past the staging glands (202), the pressurized ejector (216) quickly moves to its open position, i.e. opening within 2 and 3 milliseconds, thereby releasing the pressure on the vessel. The valve (200) can be reset by returning the ejector to its closed position.
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