Axial flow control valves having an internal actuator
AssigneeFisher Controls International LLC
InventorLonnie Oscar Davies, Jr.
Life of this patent
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Abstract
Axial flow control valves are described herein. An example axial flow control valve described herein includes a valve body defining a passageway between an inlet and an outlet that is substantially parallel to a fluid flow path at the inlet and the outlet of the valve body. The example control valve includes a cartridge assembly removably coupled to the valve body and disposed within the passageway of the valve body between the inlet and the outlet. The cartridge assembly is substantially axially aligned with the passageway and includes a motor to operate the axial flow control valve between a first position to prevent the flow of fluid between the inlet and the outlet and a second position to allow the flow of fluid between the inlet and the outlet.
Claims19
An axial flow control valve comprising:
- a valve body defining a passageway between an inlet and an outlet, wherein the passageway is substantially parallel to a fluid flow path at the inlet and the outlet of the valve body;
- and
- a cartridge assembly housing a motor, the cartridge assembly disposed within the passageway of the valve body and removably coupled relative to the valve body in a direction along the fluid flow path, the cartridge assembly to engage a flanged portion of the valve body and an internal shoulder of the valve body spaced from the flanged portion and positioned between the inlet and the outlet, wherein the cartridge assembly is substantially axially aligned with the passageway, and the motor to operate the axial flow control valve between a first position to prevent the flow of fluid between the inlet and the outlet and a second position to allow the flow of fluid between the inlet and the outlet.
A control valve comprising:
- a valve body having a passageway between an inlet and an outlet;
- a flow control member slidably coupled to a housing, wherein the flow control member and the housing are disposed within the valve body;
- and
- a motor coupled to the housing and mounted inside the valve body such that only a control fluid conduit portion coupled to a port of the motor is to extend outside of the valve body, the motor having a first inlet to receive a pressurized fluid to rotate the motor in a first direction to drive the flow control member toward a valve seat to prevent the flow of fluid through the valve body and a second inlet to receive the pressurized fluid to rotate the motor in a second direction opposite the first direction to drive the flow control member away from the valve seat to allow fluid flow through the valve body, at least one of the first inlet or the second inlet to receive a fluid flowing through the valve body upstream from the motor, and wherein the upstream fluid is to activate the motor when the pressure of the upstream fluid reaches a predetermined pressure.
A valve trim assembly for use with axial flow valves, comprising;
- a cage coupled to a valve seat at a first end and coupled to a bonnet at a second end, wherein the bonnet and the cage form a cavity;
- a flow control member slidably disposed within the cavity and to be driven to a first position to engage the valve seat and a second position spaced from the valve seat;
- a motor to drive the flow control member between the first position and the second position;
- a valve stem operatively coupled to the motor at a first end and coupled to the flow control member at a second end, wherein the valve trim assembly is to be mounted inside a valve body substantially parallel to a fluid flow path through the valve body between a flange portion of the valve body and an internal shoulder of the valve body;
- and
- a gear transmission coupled to the motor, wherein the gear transmission includes a planetary gear system coupled to an arm member having a threaded aperture that is to receive a threaded portion of the first end of the valve stem.
Dependencies are inferred from the claim text.