Apparatus to increase fluid flow in a valve

• US 20090026395A1
• Filed: 07/25/2007
• Published: 01/29/2009
• Est. Priority Date: 07/25/2007
• Status: Abandoned Application

• Current Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Original Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Inventors: Perrault, Aaron Andrew, Westwater, David James, Vaith, Joseph Michael
• Application Number:
  US11/881,324
• Publication Number:
  US 20090026395A1
• Time in Patent Office: Days
• US Class Current: 251/127
• CPC Class Codes: F16K 47/08 for decreasing pressure or noise level and having a throttling member separate from the closure member , e.g. screens, slots, labyrinths

Abstract

Apparatus to increase the fluid flow in a valve are disclosed. An example apparatus includes a valve body having a fluid passageway, a valve cage located in the passageway and including a wall having an outer surface and an inner surface defining a cage bore with an axis. The wall has at least one flow zone comprising a plurality of through openings, each through opening extending between the inner and outer surfaces to define an opening axis extending through the wall. The opening axis is disposed at a non-orthogonal angle with respect to a reference plane disposed orthogonal to the axis of the cage bore. A valve plug is axially slidable in the cage bore.

Claims

1. Apparatus to increase fluid flow in a valve, comprising:

a valve body having a fluid passageway;

a valve cage located in said passageway and comprising a wall having an inner surface and an outer surface, the inner surface defining a cage bore having an axis, the wall having at least one flow zone comprising a plurality of through openings each extending between the inner and outer surfaces to define an opening axis extending through the wall, each opening axis disposed at a non-orthogonal angle with respect to a reference plane disposed orthogonal to the axis of the cage bore, and each through opening spaced-apart from an adjacent through opening; and

a valve plug axially slidable in the cage bore.

2. Apparatus as defined in claim 1, wherein the non-orthogonal angle is about forty-five degrees.

3. Apparatus as defined in claim 1, wherein the non-orthogonal angle is in the range of about five to eighty five degrees.

4. Apparatus as defined in claim 1, wherein at least one of the through openings has an enlarged area at the outer surface of the valve cage.

5. Apparatus as defined in claim 1, wherein at least one of the through openings has a chamfer at the outer surface of the valve cage.

6. Apparatus as defined in claim 1, wherein at least one of the through openings is shaped like a slot.

7. Apparatus to increase fluid flow in a valve, comprising:

a valve body having a fluid passageway;

a valve cage located in said passageway and comprising a wall having an inner surface and an outer surface, the inner surface defining a cage bore having an axis, the wall having at least one flow zone comprising a plurality of through openings, each through opening having a curved axis extending between the inner and outer surfaces, and each through opening spaced-apart from an adjacent through opening; and

a valve plug axially slidable in the cage bore.

8. Apparatus as defined in claim 7, wherein the through openings are arranged in a pattern.

9. Apparatus as defined in claim 7, wherein at least one of the through openings has an enlarged area at the outer surface.

10. Apparatus as defined in claim 7, wherein at least one of the through openings has a chamfer at the outer surface.

11. Apparatus as defined in claim 7, wherein each through opening is a circular-shaped passageway.

12. Apparatus as defined in claim 7, wherein each through opening is an oblong-shaped passageway.

13. A valve cage to be located in a fluid passageway of a valve, comprising:

a wall having an inner surface and an outer surface, the inner surface defining a cage bore having an axis, the wall having at least one flow zone comprising a plurality of through openings each extending between the inner and outer surfaces to define an opening axis extending through the wall, each opening axis disposed at a non-orthogonal angle with respect to a reference plane disposed orthogonal to the axis of the cage bore, and each through opening spaced-apart from an adjacent through opening.

14. Apparatus as defined in claim 13, wherein the non-orthogonal angle is in the range of about five to eighty five degrees.

15. Apparatus as defined in claim 13, wherein at least one of the through openings has an enlarged area at the outer surface of the valve cage.

16. Apparatus as defined in claim 13, wherein at least one of the through openings has a chamfer at the outer surface of the valve cage.

17. A valve cage to be located in a fluid passageway of a valve, comprising:

a wall having an inner surface and an outer surface, the inner surface defining a cage bore having an axis, the wall having at least one flow zone comprising a plurality of through openings, each through opening having a curved axis extending between the inner and outer surfaces, and each through opening spaced-apart from an adjacent through opening.

18. Apparatus as defined in claim 17, wherein the through openings are arranged in a pattern.

19. Apparatus as defined in claim 17, wherein at least one of the through openings has an enlarged area at the outer surface.

20. Apparatus as defined in claim 17, wherein at least one of the through openings has a chamfer at the outer surface.

21. Apparatus as defined in claim 17, wherein at least one through opening is a circular-shaped passageway.

22. Apparatus as defined in claim 17, wherein at least one through opening is an oblong-shaped passageway.