Manufacturing a valve plug to reduce erosion
AssigneeDresser, Inc.
InventorsCyril Nicolas Vlassoff, George Dodan
Life of this patent
Estimating the term…
Abstract
A closure member is configured for use in a valve. These configurations may include a plug with grooves or “flutes” that extend along its length. Inserts in the flutes may comprise materials, like ceramics, that are different than the material that forms the core or base portion of the plug. These inserts are useful to slow erosion of the device, particularly in the flutes, which form an outwardly-facing surface that is subject to high velocity flow in the valve. This feature can extend service life of the plug, particularly in highly-erosive process fluids, like particle-entrained fluids commonly found in hydrocracking or refining operations.
Claims20
A valve, comprising:
- a valve body;
- a moveable plug inside the valve body, the moveable plug having an outer surface with a groove that extends longitudinally;
- an insert that resides in the groove;
- and
- a lock coupled with the plug and in contact with the insert,
- wherein the lock is configured to prevent the insert from moving in the groove.
A valve, comprising:
- a valve body;
- a closure member moveable in the valve body, the closure member comprising:
- a plug having an outer surface with at least a longitudinal groove formed therein, the longitudinal groove extending from one end of the plug and terminating at a tapered region on the outer surface;
- and
- an insert disposed in the groove,
- wherein the insert forms an outwardly facing surface, and
- wherein the insert comprises a first part and a second part that remove from the groove independent from one another.
A closure member for a valve, comprising:
- an elongate body with a central axis and an outer surface having a control section that is configured to direct fluid along a path that extends longitudinally on the surface along the central axis, the control section featuring removable parts that separate from the elongate body, at least one of the removeable parts forming a tapered surface;
- and
- a lock and a fastener that attaches the lock to the elongate body and prevents the removable parts from separating from the elongate body.
Dependencies are inferred from the claim text.