Dynamic pressure registration device for internally registered actuators and over pressure protection devices

A fluid regulating device, comprising:

• a regulator valve having a valve body defining an inlet and an outlet, the regulator valve further including a valve port disposed between the inlet and the outlet;
• an actuator coupled to the regulator valve and comprising a valve disc, the valve disc disposed within the regulator valve and adapted for displacement between a closed position sealingly engaging the valve port and an open position disposed away from the valve port, wherein in the open position, fluid flowing from the inlet to the outlet flows through the outlet along a flow axis;
• an overpressure protection device adapted to stop flow from the inlet to the outlet when pressure in a control cavity reaches a predetermined level, the overpressure protection device having a sensing tube, the sensing tube having a first end in fluid communication with the control cavity and a second end in fluid communication with the outlet of the of the regulator valve such that the control cavity is in fluid communication with the outlet of the of the regulator valve,
• wherein a first portion of the sensing tube extends along a tube axis that is parallel to the flow axis and wherein the first portion extends from a first point disposed between the first end and the second end and a second point disposed at the second end, and wherein the sensing tube includes a first segment of the first portion having a first diameter and a second segment of the first portion having a second diameter, wherein the first diameter is larger than the second diameter.

A fluid regulating device, comprising:

• a regulator valve having a valve body defining an inlet and an outlet, the regulator valve further including a valve port disposed between the inlet and the outlet;
• an actuator coupled to the regulator valve and comprising a valve disc, the valve disc disposed within the regulator valve and adapted for displacement between a closed position sealingly engaging the valve port and an open position disposed away from the valve port, wherein the valve disc is coupled to a diaphragm, and wherein pressure within a control cavity acts on the diaphragm to displace the valve disc between the closed position and the open position, wherein in the open position, fluid flowing from the inlet to the outlet flows through the outlet along a flow axis;
• wherein the actuator includes a sensing tube, the sensing tube having a first end in fluid communication with the control cavity and a second end in fluid communication with the outlet of the of the regulator valve such that the control cavity is in fluid communication with the outlet of the of the regulator valve,
• wherein a first portion of the sensing tube extends along a tube axis that is parallel to the flow axis and wherein the first portion extends from a first point disposed between the first end and the second end and a second point disposed at the second end, and wherein one or more apertures are disposed in the sensing tube adjacent to the second end, each of the one or more apertures having a centerline that is normal to the tube axis.