Imi Vision Limited

Control Components, Inc.

Eugene V Stepanov

John J Hunter

Douglas P Goulet

A valve trim for a pressure reduction valve containing a plurality of high hydraulic flow resistance flowpaths therethrough. Each flowpath comprises at least two inlets () and at least one impingement zone () having two zone inlets () and two zone outlets (). The zone inlets () communicate with the inlets () and are arranged substantially 180 degrees to one another. The two zone outlets () are arranged substantially perpendicular to the zone inlets () such that flow entering the two zone inlets () mutually impinges on itself creating an area of high energy loss, and thereafter separates and exits through the zone outlets ().

Fluid control

A valve having a trim comprising a plurality of a vortex flowpaths, each flowpath comprising a central vortex chamber and having three tangential inlet passages is provided. As the fluid flows through the inlet passages and enters the vortex chamber the flows start to turn and impinge upon one another, i.e., the flow entering via inlet passage will impinge upon the flow entering via inlet, the flow entering inlet will impinge on the flow entering inlet and the flow entering inlet will impinge on the flow entering inlet. As the flow entering vortex chamber impinges on another fluid flow as opposed to a wall of the flowpath the vortex can be used to create a flowpath with reduced erosion. The flow from the inlets combine in a radial flow within the vortex chamber and exit via the outlet which is substantially axial to the vortex chamber.

A valve having a trim comprising a plurality of impingement flowpaths, each flowpath comprising a central impingement chamber and having three radially directed inlet passages is provided. As the fluid floes through the inlet passages and enters the impingement chamber the flow starts to turn and impinge upon one another at a substantially central point within the impingement chamber and exit together via the outlet which is substantially axial to the impingement chamber. As the flows entering the impingement chamber impinge on one another as opposed to a wall of the flowpath, the impingement can be used to create a flowpath with reduced erosion.

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Osseo, MN, United States of America

Eugene V Stepanov