Manufacturing valve trim to abate noise
AssigneeDresser, Inc.
InventorsChad Eric Yates, Rohan N. Buntval, Stephen Randall Farmer, Donald Stroman Sanders, Jeremy Asher Glaun, Mikhail Anisimov
Life of this patent
Estimating the term…
Abstract
A valve trim that is configured to abate noise in a control valve. These configurations may include a cage with a flow path that has a spiral design or layout. This flow path can direct flow around a central bore. A plug may reside in this bore. This plug can travel longitudinally to change parameters of flow through the control valve. In one implementation, the spiral design can split flow inside of the cage. This feature can elongate travel of flow without any increase in dimensions of the cage (or the valve trim itself).
Claims19
A valve, comprising:
- valve trim comprising a cage with a bore forming an axis, the cage incorporating a flow pathway comprising a branch following a pattern with a radius that increases concomitantly with angular position about the axis, the flow pathway further comprising a loop having an inlet disposed on the branch and an outlet disposed on the branch,
- wherein the loop creates a subsidiary flow that re-enters the branch through the outlet in a direction that is at an angle to flow in the flow pathway.
A valve, comprising:
- a cage with a bore;
- a closure member moveable in the bore;
- and
- a seat stationary relative to the cage,
- wherein the cage has a body that directs fluid through a flow pathway comprising a branch that follows a pattern with a radius that increases concomitantly with angular position about the bore, the flow pathway further comprising a loop having an inlet disposed on the branch and an outlet disposed on the branch,
- wherein the loop creates a subsidiary flow that re-enters the branch through the outlet in a direction that is at an angle to flow in the flow pathway.
A valve, comprising:
- valve trim the directs flow through a flow pathway comprising a branch that is in a spiral pattern from inside to outside, the flow pathway further comprising a loop with an inlet disposed on the branch and an outlet disposed on the branch,
- wherein the loop creates a subsidiary flow that re-enters the branch through the outlet in a direction that is at an angle to flow in the flow pathway.
Dependencies are inferred from the claim text.