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US 12,460,745 B2Granted
Valve trim apparatus for use with fluid valves
AssigneeFisher Controls International LLC
InventorsMohammad Rashid Azmi, Trevor Stoakes
Life of this patent
Estimating the term…
Abstract
A valve trim apparatus includes a valve plug having a sidewall defining a plug cavity and a plurality of throttle ports. The throttle ports are radially spaced relative to a longitudinal axis of the valve plug. The throttle ports include throttle flow passageways to provide fluid communication between an inner surface of the throttle ports and an outer surface of the sidewall of the valve plug. The valve plug includes a plurality of throttle plugs positioned in respective ones of the throttle ports and movable relative to the throttle flow passageways to control fluid flow through the throttle flow passageways when the valve plug is sealingly engaged with a valve seat.
Claims19
A valve trim apparatus comprising:
- a cage having a cylindrical wall defining a central aperture and a plurality of first openings extending between an inner surface of the cage and an outer surface of the cage;
- a valve seat to engage the cage;
- and
- a valve plug slidably coupled to the cage and movable relative to the valve seat, the valve plug including:
- a sidewall defining a plug cavity and a plurality of throttle ports, the throttle ports radially spaced relative to a longitudinal axis of the valve plug, the throttle ports including throttle flow passageways to provide fluid communication between an inner surface of the throttle ports and an outer surface of the sidewall of the valve plug;
- and
- a plurality of throttle plugs, the throttle plugs positioned in respective ones of the throttle ports and movable relative to the throttle flow passageways to control fluid flow through the throttle flow passageways when the valve plug is sealingly engaged with the valve seat, the throttle plugs coupled to a retaining plate via respective ones of throttle plug stems.
4 more elements
A valve plug configured to be disposed in a fluid passageway of a valve body, the valve plug comprising:
- a cylindrical body defining an annular wall and a cavity, the cylindrical body including a first end defining a sealing surface to engage a valve seat and a second end opposite the first end to couple to a valve stem, the cylindrical body including a plurality of throttle ports radially spaced relative to a longitudinal axis of the valve plug, the throttle ports extending through the cylindrical body between the second end of the cylindrical body and the cavity of the cylindrical body, the throttle ports having throttle passageways to fluidly couple an inner surface of the annular wall and an outer surface of the annular wall;
- a plurality of throttle plugs slidably coupled within respective ones of the throttle ports and moveable relative to the throttle passageways to control fluid flow through the throttle passageways;
- and
- a plurality of throttle plug stems, the throttle plug stems to operatively couple respective ones of the throttle plugs to an actuator.
1 more element
A valve plug configured to be disposed in a fluid passageway of a valve body, the valve plug comprising:
- a cylindrical body defining an annular wall and a cavity, the cylindrical body including a first end defining a sealing surface to engage a valve seat and a second end opposite the first end to couple to a valve stem, the cylindrical body including a plurality of throttle ports radially spaced relative to a longitudinal axis of the valve plug, the throttle ports having throttle passageways to fluidly couple an inner surface of the annular wall and an outer surface of the annular wall;
- a plurality of throttle plugs slidably coupled within respective ones of the throttle ports and moveable relative to the throttle passageways to control fluid flow through the throttle passageways;
- a plurality of throttle plug stems;
- and
- a plurality of actuators, the actuators coupled to respective ones of the throttle plugs via the throttle plug stems.
2 more elements
A valve comprising:
- a valve body including an inlet, an outlet, and a fluid passageway extending between the inlet and the outlet;
- and
- a valve trim apparatus disposed in the fluid passageway, the valve trim apparatus including a primary valve plug and a secondary valve plug, the primary valve plug movable relative to a valve seat between a primary closed position and a primary open position, the primary valve plug including a cylindrical body defining an annular wall and a plug cavity, the annular wall having a first end defining a sealing surface and a second end opposite the first end, the cylindrical body including a plurality of pressure balancing ports, the pressure balancing ports radially spaced relative to a longitudinal axis of the primary valve plug, the pressure balancing ports fully extend through the cylindrical body between the second end of the cylindrical body and the plug cavity, the secondary valve plug positioned in a respective one of the pressure balancing ports, the secondary valve plug to move relative to the primary valve plug between a secondary open position and a secondary closed position, the secondary valve plug to move from the secondary closed position to the secondary open position to enable fluid flow through the fluid passageway between the inlet and the outlet of the valve body when the primary valve plug is in the primary closed position.
Dependencies are inferred from the claim text.