Valve with vortex chamber and a mechanical member to shut off flow
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United States of America Patent
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Jun 26, 2007
Grant Date -
Nov 4, 2004
app pub date -
Apr 2, 2002
filing date -
Apr 12, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A valve assembly (10) comprises a vortex chamber (14) with an axial outlet port (20), a main inlet port (16) for a fluid to be controlled, and a substantially tangential inlet port (25); the fluid enters through an inlet chamber (13) in which is a mechanical valve (26) movable so as to obstruct fluid flow into the vortex chamber (14). A duct (24) links the inlet chamber (13) to the tangential inlet port (25) of the vortex chamber. The position of the mechanical valve (26) affects the flow of fluid through the duct (24), so the vortex chamber (14) amplifies the effect of the mechanical valve. Further movement of the valve (26) closes off flow altogether (40). The assembly may include a weir (36) in the outlet, to separate gas and liquid phases.
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