STACKED DISK NOISE ABATEMENT DEVICE AND CONTROL VALVE COMPRISING SAME

• US 20140264107A1
• Filed: 03/15/2013
• Published: 09/18/2014
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Original Assignee: Fisher Controls International LLC (Emerson Electric Company)
• Inventors: McCarty, Michael W.
• Granted Patent: US 9,222,624 B2
• Time in Patent Office: Days
• US Class Current: 251/118
• 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
• CPC Class Codes: F16L 55/02718 placed transversely
• CPC Class Codes: F17D 3/18 for measuring the quantity of conveyed product measuring volume or volume flow, in general G01F
• CPC Class Codes: Y10T 137/86759 Reciprocating

Abstract

A fluid pressure reduction device includes a radial and axial fluid flow path in stacked disks. The stacked disks form a fluid flow path including at least two pressure reduction stages, a first pressure reduction stage being oriented so that the fluid flowpath is directed radially outward and a second pressure reduction stage being oriented so that the fluid flowpath is directed radially inward.

Claims

1. A fluid pressure reduction device comprising:

a plurality of stacked disks, the plurality of disks including;

a first disk having a first hollow center portion, a first annular perimeter, a first fluid inlet portion disposed radially inward of a first stage restriction, a first stage recovery entry disposed radially outward of the first stage restriction, and a third stage recovery plenum disposed radially outward of the first stage recovery entry; and

a second disk having a second hollow center portion, a second annular perimeter, and a restriction and recovery plenum disposed between the second hollow center portion and the second annular perimeter, the restriction and recovery plenum including a first stage recovery area, a second stage restriction fluidly connected to the first stage recovery area, and a second stage recovery plenum fluidly connected to the second stage restriction;

wherein a fluid flowpath is formed between the first fluid inlet portion and the third stage recovery plenum, the fluid flowpath passing through the first stage restriction, the first stage recovery area, the second stage restriction, and the second stage recovery plenum, before passing through the third stage recovery plenum, the second stage restriction directing the fluid flowpath radially inward, towards the second hollow center portion.

2. The fluid pressure reduction device of claim 1, further comprising a third stage restriction between the second stage recovery plenum and the third stage recovery plenum, the third stage restriction directing the fluid flow path in an axial direction from the second disk to the first disk.

3. The fluid pressure reduction device of claim 1, wherein the second disk comprises a fluid exit slot disposed radially outward of the second stage recovery plenum.

4. The fluid pressure reduction device of claim 1, wherein the first stage recovery area is fluidly connected to a first second stage restriction and to a second second stage restriction, thereby splitting the fluid flow path into two fluid flowpaths.

5. The fluid pressure reduction device of claim 1, wherein the second stage restriction is angled with respect to the first stage recovery area.

6. The fluid pressure reduction device of claim 5, wherein the angle is approximately 40 degrees.

7. The fluid pressure reduction device of claim 1, wherein the fluid inlet portion includes substantially parallel sides.

8. The fluid pressure reduction device of claim 1, wherein the first fluid inlet portion includes a venturi section having side walls that converge and then diverge.

9. The fluid pressure reduction device of claim 1, wherein the first disk includes a plurality of fluid inlet slots, each fluid inlet slot being fluidly connected to a single first stage recovery area.

10. The fluid pressure reduction device of claim 1, wherein each first stage recovery area is fluidly connected to two second stage restrictions.

11. The fluid pressure reduction device of claim 10, wherein each second stage restriction is fluidly connected with a single third stage recovery plenum.

12. The fluid pressure reduction device of claim 1, wherein the plurality of stacked disks includes a plurality of first disks and a plurality of second disks arranged in an alternating fashion.

13. The fluid pressure reduction device of claim 1, wherein the first fluid inlet portion includes a venturi section that has side walls that converge and then diverge.

14. A fluid control valve comprising:

a valve body having a fluid inlet and a fluid outlet connected by a connecting passageway; and

a plurality of stacked disks disposed in the connecting passageway, the plurality of stacked disks including;

a first disk having a first hollow center portion, a first annular perimeter, a first fluid inlet portion disposed radially inward of a first stage restriction, a first stage recovery entry disposed radially outward of the first stage restriction, and a third stage recovery plenum disposed radially outward of the first stage recovery entry; and

a second disk having a second hollow center portion, a second annular perimeter, and a restriction and recovery plenum disposed between the second hollow center portion and the second annular perimeter, the restriction and recovery plenum including a first stage recovery area, a second stage restriction fluidly connected to the first stage recovery area, and a second stage recovery plenum fluidly connected to the second stage restriction;

wherein a fluid flowpath is formed between the first fluid inlet portion and the third stage recovery plenum, the fluid flowpath passing through the first stage restriction, the first stage recovery area, the second stage restriction, and the second stage recovery plenum, before passing through the third stage recovery plenum, the second stage restriction directing the fluid flowpath radially inward, towards the second hollow center portion.

15. The fluid control valve of claim 14, wherein the first stage recovery area is fluidly connected to a first second stage restriction and a second second stage restrictions, thereby splitting the fluid flow path into two fluid flowpaths.

16. The fluid control valve of claim 14, wherein the second stage restriction is angled with respect to the first stage recovery area.

17. The fluid control valve of claim 16, wherein the angle is approximately 31 degrees.

18. The fluid control valve of claim 14, wherein the fluid inlet portion includes substantially parallel sides.

19. The fluid control valve of claim 14, wherein the first disk includes a plurality of fluid inlet slots, each fluid inlet slot being fluidly connected to a single first stage recovery area.

20. The fluid control valve of claim 14, wherein each first stage recovery area is fluidly connected to two second stage restrictions.

21. The fluid control valve of claim 20, wherein each second stage restriction is fluidly connected with a single third stage recovery plenum.

22. A fluid control valve comprising:

a plurality of stacked disks, wherein the plurality of stacked disks defines a fluid flow path therethrough, the fluid flow path including at least two pressure reduction stages, a first pressure reduction stage being oriented so that the fluid flowpath is directed radially outward and a second pressure reduction stage being oriented so that the fluid flowpath is directed radially inward.

23. The fluid control valve of claim 22, wherein each disk in the plurality of stacked disks is identical.

24. A fluid pressure reduction device comprising:

a plurality of stacked disks, the plurality of disks forming a first pressure reduction stage, a second pressure reduction stage, and a third pressure reduction stage

wherein a fluid flowpath is formed between the first pressure reduction stage, the second pressure reduction stage, and the third pressure reduction stage, the fluid flowpath having a radially outward component in the first pressure reduction stage, a radially inward component in the second pressure reduction stage, and a radially outward component in the third pressure reduction stage.

25. The fluid pressure reduction device of claim 24, wherein the second pressure reduction stage simultaneously reduces pressure and changes direction of the fluid flow.