Fluid regulator having a biased pressure sense tube

Patent metadata

Field	Value
Publication number	US-10001785-B2
Application number	US-201514712631-A
Country	US
Kind code	B2
Filing date	May 14, 2015
Priority date	Jun 6, 2014
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

A fluid regulating device includes a valve body, a control element, a control assembly, and a sense tube. The valve body has an inlet, an outlet, a valve port, and a control element adapted to be displaced relative to the valve port to control the flow of a fluid between the inlet and the outlet. The control assembly is operatively coupled to the control element and includes a diaphragm disposed adjacent a diaphragm chamber. The sense tube has a first end, a second end, and a sense hole. The first end is positioned to communicate with the diaphragm chamber, the second end is disposed adjacent the outlet, and the sense hole being formed in the sense tube between the first end and the second end and being oriented along an axis that is angled relative to an axis of the outlet.

First claim

What is claimed is:

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;
an actuator comprising an actuator housing and a control assembly arranged in the actuator housing, the actuator housing coupled to the valve body, and the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber of the actuator housing; and
a sense tube having a first end, a second end, and a sense hole, the first end being positioned within the valve body to provide flow communication with the diaphragm chamber, the second end being disposed adjacent a distal portion of the outlet, and the sense hole being formed in the sense tube between the first end and the second end, the sense hole extending along an axis that is angled relative to an axis of the outlet,
wherein the second end is closed, and
wherein the sense tube has a flared portion disposed adjacent to the second end, the sense hole being spaced away from and upstream of the flared portion.

2. The fluid regulating device of claim 1 , wherein the sense hole is formed proximate to the closed second end.

3. The fluid regulating device of claim 1 , wherein the sense hole is oriented along an axis that is perpendicular to the axis of the outlet.

4. The fluid regulating device of claim 1 , wherein the sense tube comprises a cylindrical tube having a top semi-cylindrical portion and a bottom semi-cylindrical portion, the sense hole being formed in the top or bottom semi-cylindrical portion of the cylindrical tube.

5. The fluid regulating device of claim 4 , wherein the sense hole is formed in the bottom semi-cylindrical portion of the cylindrical tube.

6. The fluid regulating device of claim 1 , wherein the sense tube has an internal diameter and the sense hole has a diameter in a range of between 50% to 150% the size of the internal diameter of the sense tube.

7. 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;
an actuator comprising an actuator housing and a control assembly arranged in the actuator housing, the actuator housing coupled to the valve body, and the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber of the actuator housing;
a sense tube having a mounting portion and a sensing portion, the mounting portion being positioned within the valve body to provide flow communication with the diaphragm chamber, and the sensing portion disposed proximate to the outlet and extending along a central longitudinal axis; and
a sense hole formed in the sensing portion and extending along an axis that is angled relative to the central longitudinal axis,
wherein the sensing portion terminates at an end proximate to a distal portion of the outlet, the end being closed, and
wherein the sensing portion has a flared portion disposed adjacent to the closed end, the sense hole being spaced away from and upstream of the flared portion.

8. The fluid regulating device of claim 7 , wherein the sense hole is formed immediately adjacent the closed end.

9. The fluid regulating device of claim 7 , wherein the sense hole extends along an axis that is perpendicular to the central longitudinal axis.

10. The fluid regulating device of claim 7 , wherein the sense tube comprises a cylindrical tube having a top semi-cylindrical portion and a bottom semi-cylindrical portion, the sense hole being formed in the top or bottom semi-cylindrical portion of the cylindrical tube.

11. The fluid regulating device of claim 10 , wherein the sense hole is formed in the bottom semi-cylindrical portion of the cylindrical tube.

12. The fluid regulating device of claim 7 , further comprising a balanced port control assembly disposed within the valve body.

13. A sense tube for sensing output pressure for a fluid regulating device, the fluid regulating device comprising a valve body, a control element shiftably disposed within the valve body, and an actuator comprising an actuator housing coupled to the valve body and a control assembly arranged in the actuator housing and operatively coupled to the control element, the valve body having an inlet, an outlet, and a valve port, 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, the control assembly including a diaphragm disposed adjacent a diaphragm chamber of the actuator housing, the sense tube comprising: a mounting portion adapted to be positioned within the valve body to provide flow communication with the diaphragm chamber of the control assembly; a sensing portion adapted to be disposed proximate to the outlet of the valve body, the sensing portion having a central longitudinal axis and an end, the end being closed; a sense hole formed in the sensing portion of the sense tube, the sense hole extending along an axis that is angled relative to the central longitudinal axis; and a flared portion disposed adjacent to the second end, the sense hole being spaced away from and upstream of the flared portion.

14. The sense tube of claim 13 , wherein the sense hole extends along an axis that is perpendicular to the central longitudinal axis.

15. The sense tube of claim 13 , wherein the sense hole is formed immediately adjacent the end of the sensing portion.

16. The sense tube of claim 13 , wherein the sense tube comprises a cylindrical tube having a top semi-cylindrical portion and a bottom semi-cylindrical portion, the sense hole being formed in the top or bottom semi-cylindrical portion of the cylindrical tube.

17. 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;
an actuator comprising an actuator housing and a control assembly arranged in the actuator housing, the actuator housing coupled to the valve body, and the control assembly operatively coupled to the control element, the control assembly including a diaphragm disposed adjacent a diaphragm chamber of the actuator housing; and
a sense tube having a first end, a second end, and a sense hole, the first end being positioned within the valve body to provide flow communication with the diaphragm chamber, the second end being disposed adjacent a distal portion of the outlet, and the sense hole being formed in the sense tube between the first end and the second end, the sense hole extending along an axis that is angled relative to an axis of the outlet,
wherein the second end is closed, and
wherein the second end is disposed outside of the valve body.

18. The fluid regulating device of claim 17 , wherein the sense hole is formed proximate to the closed second end.

19. The fluid regulating device of claim 17 , wherein the sense hole is oriented along an axis that is perpendicular to the axis of the outlet.

20. The fluid regulating device of claim 17 ,

Assignees

• Emerson Process Man Regulator Technologies Inc

Inventors

• Sanders Jeffrey Michael
• Nguyen Tung Kim

Classifications

• G05D16/02 Primary

  Modifications to reduce the effects of instability, e.g. due to vibrations, friction, abnormal temperature, overloading or imbalance · CPC title

• Y10T137/7754

  Line flow effect assisted · CPC title

• G05D7/012 Primary

  the sensing element being deformable and acting as a valve · CPC title

• F16K31/1262

  one side of the diaphragm being spring loaded · CPC title

• F16K31/1266

  one side of the diaphragm being acted upon by the circulating fluid · CPC title