Fluid regulator having pressure registration flow modifier

摘要

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.

主权项

1. 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.