Stabilizer cartridge for a fluid regulator

Patent metadata

Field	Value
Publication number	US-10612680-B2
Application number	US-201916389575-A
Country	US
Kind code	B2
Filing date	Apr 19, 2019
Priority date	Aug 31, 2016
Publication date	Apr 7, 2020
Grant date	Apr 7, 2020

Abstract

A stabilizer cartridge for enhancing stability of a fluid regulator is provided. The stabilizer cartridge includes a body, a first disk, and a second disk. The body has a through-bore and an external flange. The first disk has one or more windows and an aperture, and is fixed on an exterior surface of the body. The second disk is slidable along the exterior surface of the body and is biased into contact with the first disk by a biasing element that is positioned between the external flange and the second disk.

First claim

The invention claimed is:

1. A stabilizer cartridge, comprising:
a body having an internal bore, an internal counterbore, and an external flange;
a first disk having one or more windows and an aperture, wherein the first disk is positioned around an exterior surface of the body;
a second disk that is slidably positioned around the exterior surface of the body between the external flange and the first disk, wherein the second disk is configured to restrict fluid communication through the one or more windows but not through the aperture when the second disk contacts the first disk; and
a biasing member that is positioned around the exterior surface of the body between the external flange and the second disk, wherein the biasing member biases the second disk toward the first disk;
wherein the stabilizer cartridge is insertable, as an assembly, around a valve stem with the valve stem being receivable in the internal bore and at least a portion of a stem guide being receivable in the internal counterbore.

2. The stabilizer cartridge of claim 1 , wherein an outer edge of the first disk is configured to be held between a valve body and a valve actuator assembly.

3. The stabilizer cartridge of claim 1 , wherein the aperture is configured to provide fluid communication between a valve body and a valve actuator assembly.

4. The stabilizer cartridge of claim 1 , wherein the second disk is configured to move away from the first disk to provide fluid communication through the one or more windows when a first force resulting from a fluid pressure operating on the second disk exceeds a threshold force.

5. The stabilizer cartridge of claim 1 , wherein the one or more windows comprise a plurality of windows that are separated by spokes that extend from an opening in the first disk.

6. The stabilizer cartridge of claim 1 , wherein stabilizer cartridge is configured to be field-insertable in a valve by removing a control element from the valve stem.

7. A stabilizer cartridge, comprising:
a first disk having a plurality of windows and an aperture, wherein the first disk is fixed on a cylindrical body that has a through-bore and a counterbore; and
a second disk that is movably positioned on the cylindrical body and biased into contact with the first disk, wherein the second disk has a smaller radius than the first disk;
wherein the stabilizer cartridge is slidable, as an assembly, along a valve stem into its operating position, and wherein the counterbore is configured to receive a portion of a stem guide.

8. The stabilizer cartridge of claim 7 , further comprising a biasing element that is positioned between an external flange on the cylindrical body and the second disk.

9. The stabilizer cartridge of claim 7 , wherein the second disk is configured to restrict fluid communication through the plurality of windows, but not through the aperture, when the second disk contacts the first disk.

10. The stabilizer cartridge of claim 9 , wherein the aperture is positioned at a first distance from the center of the cylindrical body, wherein the first distance is greater than the radius of the second disk.

11. The stabilizer cartridge of claim 7 , wherein an outer edge of the first disk is configured to be held between a valve body and a valve actuator assembly.

12. A stabilizer cartridge, comprising:
a body having a through-bore, a counterbore, and an external flange;
a first disk having one or more windows and an aperture, wherein the first disk is fixed on an exterior surface of the body; and
a second disk that is slidable along the exterior surface of the body, wherein the second disk is biased into contact with the first disk by a spring that is positioned between the external flange and the second disk;
wherein the stabilizer cartridge is configured to be installed, as an assembly, along a valve stem with the valve stem being received in the through-bore and a stem guide being received in the counterbore.

13. The stabilizer cartridge of claim 12 , wherein the second disk is configured to restrict fluid communication through the one or more windows, but not through the aperture, when the second disk contacts the first disk.

14. The stabilizer cartridge of claim 13 , wherein the spring is configured to maintain contact between the second disk and the first disk when a pressure differential across the second disk is less than a threshold pressure.

15. The stabilizer cartridge of claim 14 , wherein the second disk is configured to move away from the first disk to provide fluid communication through the one or more windows when the pressure differential across the second disk is greater than the threshold pressure.

16. The stabilizer cartridge of claim 13 , wherein the aperture is positioned at a first distance from the center of the body, wherein the first distance is greater than a radius of the second disk.

Assignees

• Emerson Process Man Regulator Technologies Inc

Inventors

• Hawkins James C
• Davis David B
• Nguyen Tung K

Classifications

• F16K17/0413

  in the form of closure plates · CPC title

• Y10T137/783

  Reactor operatively connected to valve by mechanical movement · CPC title

• G05D16/063

  the sensing element being a membrane · CPC title

• F16K1/32 Primary

  Details (details of more general applicability F16K25/00 - F16K51/00) · CPC title

• G05D16/0683

  using a spring-loaded membrane · CPC title