Fluid flow control device
AssigneeControl Components, Inc.
InventorJoseph H. Steinke
Life of this patent
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Abstract
A fluid flow control device, sometimes called a variable fluid restrictor control valve or severe service control valve. These valves employ a moveable plug and are used to control high pressure fluids e.g. superheated steam. The valve of the invention provides axial flow passageways for the fluid, which have right-angled turns. The passageways are either on the radially outer surface of the plug or within an annular sleeve through which the plug is moveable.
Claims7
A fluid flow control device comprising a plug and cylinder arrangement, the cylinder being annular and the plug being cylindrical and moveable axially within said cylinder,
- a fluid inlet co-operating with one end of said cylinder,
- a fluid outlet co-operating with the other end of said cylinder,
- a fluid flow path extending axially through the plug and cylinder arrangement and having a path entry of variable area, said cylinder comprising an inner annulus and an outer annulus, the inner annulus being a sealing fit inside the outer annulus, the fluid flow path being provided as passageways formed as axially-extending channels in the outer surface of said inner annulus, said passageways communicating at a plurality of openings along their length with the interior of said inner annulus, said fluid flow path having a plurality of circumferentially extending angular turns, and
- operating means for axially moving the plug relative to the cylinder,
- the arrangement being such that as the plug is moved axially the length of the fluid flow path is varied.
Dependencies are inferred from the claim text.