Injection valve
AssigneeFisher Controls International LLC
InventorsChristopher J. Hammond, Cory J. Hagen, Trevor Stoakes
Life of this patent
Estimating the term…
Abstract
An injection valve including a valve body defining an inlet, an outlet, and a fluid flow path connecting the inlet and the outlet. A valve shaft is disposed in the valve body, and a valve plug is operatively connected to the valve shaft. The valve plug is movable between an open position, in which the valve plug permits fluid flow between the inlet and the outlet, and a closed position, in which the valve plug limits flow between the inlet and the outlet. A seat ring defines a valve seat and is proximally disposed relative to the outlet of the valve body. The valve plug moves away from the valve seat when moving in a direction toward the valve body, and toward the valve seat when moving in a direction away from the valve body.
Claims20
An injection valve comprising:
- a valve body defining an inlet, an outlet, and a fluid flow path connecting the inlet and the outlet;
- a valve shaft disposed in the valve body;
- a valve plug operatively connected to the valve shaft, the valve plug movable between an open position, in which the valve plug permits fluid flow between the inlet and the outlet, and a closed position, in which the valve plug limits flow through the outlet;
- a seat ring operatively coupled to the outlet of the valve body, the seat ring defining a valve seat;
- wherein the valve plug moves away from the valve seat when the valve plug moves in a direction toward the valve body and the valve plug moves toward the valve seat when the valve plug moves in a direction away from the valve body.
A valve trim assembly for an injection valve, the valve trim assembly comprising:
- a valve plug including a seating surface and a plurality of grooves formed on an exterior surface of the valve plug;
- a seat ring including a first end, a second end opposite the first end, and a bore extending between the first and second ends, the first end operatively coupleable to a valve body and the bore sized to slidably receive the valve plug, the bore defining a valve seat arranged to sealingly engage with the seating surface of the valve plug;
- wherein when the seating surface of the valve plug engages the valve seat of the seat ring, the plurality of grooves of the valve plug are externally located relative to the second end of seat ring.
An injection valve comprising:
- a valve body defining an inlet, an outlet, and a fluid flow path connecting the inlet and the outlet;
- a valve shaft disposed in the valve body;
- a valve plug operatively connected to the valve shaft, the valve plug movable between an open position, in which the valve plug permits fluid flow between the inlet and the outlet, and a closed position, in which the valve plug limits flow between the inlet and the outlet;
- a seat ring coupled to the outlet of the valve body and defining a valve seat;
- wherein the valve plug moves away from the valve seat when the valve plug moves in a direction toward the valve body and the valve plug moves toward the valve seat when the valve plug moves in a direction away from the valve body;
- and
- wherein one or more of the seat ring and the valve body includes a channel arranged to receive a heat exchange fluid.
Dependencies are inferred from the claim text.