Upstream sense for balance port

Patent metadata

Field	Value
Publication number	US-9400507-B2
Application number	US-201313794021-A
Country	US
Kind code	B2
Filing date	Mar 11, 2013
Priority date	Sep 28, 2012
Publication date	Jul 26, 2016
Grant date	Jul 26, 2016

Abstract

A fluid regulating device includes a regulator valve having a valve body defining an inlet and an outlet and a valve port disposed between the inlet and the outlet. A housing assembly is disposed adjacent the valve port, and the housing assembly includes a first aperture adapted to receive a valve disc. A balancing diaphragm is secured to a portion of the valve disc and a portion of the housing assembly, and a portion of a balancing cavity is defined by a top surface of the balancing diaphragm and an interior surface of the housing assembly. A sensing passage extends from the inlet of the regulator valve to the balancing cavity such that the inlet of the regulator valve is in fluid communication with the balancing cavity.

First claim

What is claimed:

1. 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 along a longitudinal axis between a closed position sealingly engaging the valve port and an open position disposed away from the valve port; a housing assembly disposed within the valve body, the housing assembly having a first aperture adapted to receive a portion of the valve disc; a balancing diaphragm secured to a portion of the valve disc and a portion of the housing assembly, wherein a longitudinal distance between the portion of the valve disc and the portion of the housing assembly; a balancing cavity, wherein a portion of the balancing cavity is defined by a portion of a top surface of the balancing diaphragm and at least a portion of the interior surface of the housing assembly; and a sensing passage extending from the inlet of the regulator valve to the balancing cavity such that the inlet of the regulator valve is in fluid communication with the balancing cavity, wherein the balancing diaphragm extends across the balancing cavity from a first point of the housing assembly to a second point of the valve disc in a direction normal to the longitudinal axis, and wherein a first distance between the first point of the housing assembly and the second point of the valve disc that is along the longitudinal axis is less that a second distance between the first point of the housing assembly and the second point of the valve disc that is normal to the longitudinal axis, wherein the sensing passage extends through the housing assembly between a first end of the housing assembly and a second end of the housing assembly, and wherein a centerline of the sensing passage is not parallel to the longitudinal axis, and wherein the sensing passage has a first end disposed upstream of the valve port and a second end disposed adjacent to the balancing cavity, wherein the sensing passage is stationary relative to the valve body when the valve disc displaces between the open position and the closed position.

2. The fluid regulating device of claim 1 , wherein an angle between the centerline of the sensing passage and the longitudinal axis is between 10 degrees and 80 degrees.

3. The fluid regulating device of claim 1 , wherein the housing assembly includes a balanced port housing and a diaphragm retainer disposed within a recess of the balanced port housing.

4. The fluid regulating device of claim 3 , wherein a radially inward edge of the balancing diaphragm is secured to the portion of the valve disc and a radially outward edge of the balancing diaphragm is secured between a portion of the diaphragm retainer and a portion of the balanced port housing.

5. The fluid regulating device of claim 4 , wherein the interior surface of the housing assembly is an inner surface of the diaphragm retainer.

6. The fluid regulating device of claim 1 , wherein the sensing passage is linear.

7. The fluid regulating device of claim 1 , wherein at least a portion of the sensing passage is linear, and wherein the portion of the sensing passage that is linear has a centerline that is not parallel to the longitudinal axis.

8. The fluid regulating device of claim 1 , wherein at least a portion of the sensing passage is non-linear, and wherein the portion of the sensing passage that is non-linear has a centerline that has a radius of curvature.

9. The fluid regulating device of claim 1 , wherein the sensing passage at least partially extends external to the valve body of the regulator valve.

10. The fluid regulating device of claim 9 , wherein a first portion of the sensing passage extends through a portion of the inlet such that the first portion of the sensing passage is in fluid communication with the inlet, and wherein a second end of the first portion is disposed external to the valve body.

11. The fluid regulating device of claim 9 , wherein a first end of a second portion of the sensing passage is disposed adjacent to the second end of the first portion, the first end of the second portion being disposed external to the valve body, and wherein a second end of the second portion is disposed within or adjacent to the balancing cavity such that the inlet is in fluid communication with the balancing cavity.

12. The fluid regulating device of claim 1 , wherein the balancing diaphragm is secured to the portion of the valve disc and the portion of the housing assembly, and the portion of the housing assembly is disposed between the first end and the second end of the housing assembly.

13. The fluid regulating device of claim 1 , wherein the balancing diaphragm is annular in shape.

14. The fluid regulating device of claim 1 , wherein the balancing diaphragm is not a bellows.

Assignees

• Emerson Process Man Regulator Technologies Inc

Inventors

• Mevius Jason S
• Zhou Biao

Classifications

• G05D16/02 Primary

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

• G05D16/0694

  using a spring-loaded membrane with a spring-loaded slideable obturator · CPC title

• Y10T137/7801

  Balanced valve · CPC title

• Y10T137/0379

  By fluid pressure · CPC title

• Y10T137/261

  Relief port through common sensing means · CPC title