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US 8,739,819 B2Granted
Fluid regulator having pressure registration flow modifier
AssigneeEmerson Process Management Regulator Technologies, Inc.
InventorsGregory L. Foust, Jared B. Chizek, Mark A. Michnevitz, Tung K. Nguyen
Life of this patent
Estimating the term…
Abstract
A fluid regulating device includes a valve body having an inlet, an outlet, a valve port, and a control element shiftable within the valve body. A control assembly includes an actuator coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. A sense tube has a first end, a second end, and an intermediate portion, the first end positioned to communicate with the diaphragm chamber, the second end disposed adjacent the outlet, and the intermediate portion disposed adjacent an intermediate portion of the outlet. The sense tube includes a shoulder and a flared portion, with the flared portion disposed adjacent the second end.
Claims27
A fluid regulating device, comprising:
- a valve body having an inlet, an outlet, and a valve port;
- a control element shiftably disposed within the valve body, the control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet;
- a control assembly comprising a valve actuator, the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber;
- a sense tube having a first end, a second end, and an intermediate portion, the first end positioned to provide flow communication with the diaphragm chamber of the control assembly, the second end disposed adjacent a distal portion of the outlet and the intermediate portion disposed between the first end and the second end and adjacent an intermediate portion of the outlet;
- a shoulder positioned in the intermediate portion of the sense tube, the shoulder comprising a first end facing in an upstream direction and having an external diameter greater than an external diameter of the first end and greater than an external diameter of the second end;
- and
- a flared portion coupled to the sense tube adjacent the second end and positioned so that the fluid flows over an outwardly facing surface of an axial length of the flared portion during operation.
4 more elements
A fluid regulating device, comprising:
- a valve body having an inlet, an outlet, and a valve port, the valve body defining a flow path extending from adjacent the inlet, through the valve port, and exiting through the outlet along an outlet axis;
- a control element shiftably disposed within the valve body, the control element displaceable relative to the valve port to control the flow of a fluid between the inlet and the outlet;
- a control assembly comprising a valve actuator, the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber;
- a sense tube having a first end, a second end, and an intermediate portion, the first end positioned to provide flow communication with the diaphragm chamber of the control assembly, the second end disposed adjacent a distal portion of the outlet and the intermediate portion disposed between the first end and the second end and adjacent an intermediate portion of the outlet;
- a flow interrupter disposed in the flow path and positioned in the intermediate portion of the sense tube, the flow interrupter comprising a first end facing in an upstream direction and having an external diameter greater than an external diameter of the first end and greater than an external diameter of the second end;
- and
- a flared portion coupled to the sense tube and disposed in the flow path adjacent the second end and downstream of the flow interrupter, the flared portion being positioned so that the fluid flows over an outwardly facing surface of an axial length of the flared portion during operation.
4 more elements
A method of sensing output pressure in a fluid regulating device, the method comprising the steps of:
- providing a valve body having an inlet, an outlet, and a valve port, the valve body defining a flow path extending from adjacent the inlet, through the valve port, and exiting through the outlet along an outlet axis;
- providing a control element shiftably disposed within the valve body, the control element displaceable relative to the valve port to control the flow of a fluid between the inlet and the outlet;
- providing a control assembly comprising a valve actuator, the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber;
- providing a sense tube having a first end, a second end, and an intermediate portion disposed between the first end and the second end;
- positioning the first end to provide flow communication with the diaphragm chamber of the control assembly;
- positioning the second end adjacent a distal portion of the outlet of the valve body;
- positioning a flow interrupter along the flow path adjacent the intermediate portion of the sense tube, the flow interrupter comprising a first end facing in an upstream direction and having an external diameter greater than an external diameter of the first end and greater than the external diameter of the second end;
- and
- providing a flared portion on the sense tube, and positioning the flared portion adjacent the second end of the sense tube and downstream of the flow interrupter so that the fluid flows over an outwardly facing surface of an axial length of the flared portion during operation.
6 more elements
Dependencies are inferred from the claim text.