Apparatus for noise reduction in valves

Patent metadata

Field	Value
Publication number	US-11525525-B2
Application number	US-202017107399-A
Country	US
Kind code	B2
Filing date	Nov 30, 2020
Priority date	Nov 30, 2020
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

An apparatus for noise reduction in valves is disclosed. A disclosed example valve includes a valve body including a fluid passageway, and a cage located in the fluid passageway, the cage including a wall having openings, a fluid to flow from an inner surface of the wall to an outer surface of the wall through the openings, each of the openings including respective ribs, the ribs to follow a helical path along a length of each opening to cause rotation of the fluid flowing through the openings.

First claim

What is claimed is:

1. A valve comprising:
a valve body including a fluid passageway; and
a cage located in the fluid passageway, the cage including a wall having openings, a fluid to flow from an inner surface of the wall to an outer surface of the wall through the openings, each of the openings including respective ribs, the ribs to define a helical path along a length of each opening to cause rotation of the fluid flowing through the openings, a pitch of the helical path greater than a thickness of the wall, the ribs to extend between a first end and a second end, an area of a cross-section of the ribs to increase from the first end to a midpoint of the ribs, the area of the cross-section of the ribs to decrease from the midpoint to the second end.

2. The valve of claim 1 , wherein each opening is cylindrical and has a circular cross-section.

3. The valve of claim 1 , wherein the helical path extends along the length of the opening between the outer surface of the wall and a point inside the opening, a distance between the outer surface of the wall and the point being less than the thickness of the wall.

4. The valve of claim 1 , wherein the cross-section of each rib is rectangular.

5. The valve of claim 1 , wherein each rib includes a first radius along a top edge and a second radius along a base edge.

6. The valve of claim 1 , wherein the ribs of each opening are equally spaced about a circumference of the opening.

7. A cage to be located in a fluid passageway of a valve, the cage comprising:
a wall having openings, a fluid to flow from an inner surface of the wall to an outer surface of the wall through the openings, each of the openings including respective elongated protrusions, the protrusions to define a curved path along a length of each opening to cause rotation of the fluid flowing through the openings, a pitch of the curved path greater than a thickness of the wall, the protrusions to extend between a first end and a second end, an area of a cross-section of the protrusions to increase from the first end to a midpoint of the protrusions, the area of the cross-section of the protrusions to decrease from the midpoint to the second end.

8. The cage of claim 7 , wherein each opening has a circular cross-section.

9. The cage of claim 7 , wherein the curved path extends along the length of the opening from the outer surface of the wall a distance less than the thickness of the wall.

10. The cage of claim 7 , wherein the cross-section of each protrusion is rectangular.

11. The cage of claim 7 , wherein each protrusion includes a first radius along a top edge and a second radius along a base edge.

12. The cage of claim 7 , wherein the protrusions of each opening are spaced about a circumference of the opening.

13. An apparatus comprising:
means for providing a fluid passageway; and
means for allowing a fluid to flow therein, the means for allowing the fluid to flow to include means for reducing noise through the fluid passageway, means for generating rotation of the fluid arranged in each of the means for reducing noise, a pitch of a path of the means for generating rotation of the fluid greater than a thickness of the means for allowing the fluid to flow, the means for generating rotation of the fluid to extend between a first end and a second end, an area of a cross-section of the means for generating rotation of the fluid to increase from the first end to a midpoint of the means for generating rotation of the fluid, the area of the cross-section of the means for generating rotation of the fluid to decrease from the midpoint to the second end.

14. The apparatus of claim 13 , wherein each means for allowing the fluid to flow is cylindrical and has a circular cross-section.

15. The apparatus of claim 13 , wherein each means for generating rotation of the fluid extends along a length of the means for allowing the fluid to flow between an outer surface of and a point inside the means for allowing the fluid to flow, a distance between the outer surface and the point being less than the thickness of the means for allowing the fluid to flow.

16. The apparatus of claim 13 , wherein the cross-section of each means for generating rotation of the fluid is rectangular.

17. The apparatus of claim 13 , wherein the means for generating rotation of the fluid are equally spaced about a circumference of the means for allowing the fluid to flow.

Assignees

• Fisher Controls Int Llc

Inventors

• Eilers Daniel James
• Fagerlund Allen Carl

Classifications

• F16K47/12 Primary

  the throttling channel being of helical form · CPC title

• F16K47/045

  and the closure member being rotatable · CPC title

• F16K47/06

  with a throttle in the form of a helical channel · CPC title

• F16K5/0605

  with particular plug arrangements, e.g. particular shape or built-in means · CPC title

• F16K47/02 Primary

  for preventing water-hammer or noise · CPC title