High pressure relief valve closure

Patent metadata

Field	Value
Publication number	US-9791058-B2
Application number	US-201213658130-A
Country	US
Kind code	B2
Filing date	Oct 23, 2012
Priority date	Oct 23, 2012
Publication date	Oct 17, 2017
Grant date	Oct 17, 2017

Abstract

In one featured embodiment, a closure sleeve for a valve comprises a sleeve body surrounding a center axis and defined by an overall length extending from an upstream end to a downstream end. The sleeve body has an internal cavity that is enclosed at the downstream end and is open at the upstream end. The internal cavity is defined in part by a piston contact surface that is defined by an inner diameter. The piston contact surface is configured to slide against a piston to be received within the internal cavity, and a ratio of the inner diameter to the overall length is between 1.0 and 1.5.

First claim

The invention claimed is:

1. A closure sleeve for a valve comprising:
a sleeve body surrounding a center axis and defined by an overall length extending from an upstream end to a downstream end, wherein the sleeve body has an internal cavity that is enclosed at the downstream end and open at the upstream end, the internal cavity being defined in part by a piston contact surface that is defined by a piston interface length and an inner diameter, wherein the piston contact surface is configured to slide against a piston to be received within the internal cavity, and wherein a ratio of the piston interface length to the inner diameter is between 1.0 and 1.5, and
wherein the sleeve body includes at least one slot at the upstream end that comprises a nozzle attachment interface.

2. The closure sleeve according to claim 1 wherein the sleeve body comprises a single-piece component.

3. The closure sleeve according to claim 1 wherein the at least one slot is formed within and open to the upstream end, the slot being defined by a slot width that extends circumferentially about the axis and a slot length that extends in a direction substantially parallel to the axis, and wherein a ratio of the slot width to the slot length is between 1.0 and 2.5.

4. The closure sleeve according to claim 1 wherein the sleeve body includes a plurality of windows circumferentially spaced apart from each other adjacent to the upstream end, each window being defined by a window diameter, and wherein the sleeve body includes an inner diameter, and wherein a ratio of the inner diameter to the window diameter is between 2.5 and 3.9.

5. The closure sleeve according to claim 1 wherein the at least one slot is formed within the upstream end, the slot being defined by a slot width that extends circumferentially about the axis and a slot depth that extends in a direction substantially parallel to the axis, and wherein the sleeve body includes a plurality of windows circumferentially spaced apart from each other adjacent to the upstream end, each window being defined by a window diameter, and wherein a length from a center of the plurality of windows to a slot depth end face is between 0.1 inches and 0.4 inches.

6. The closure sleeve according to claim 1 wherein the sleeve body includes a plurality of windows axially spaced from the at least one slot.

7. The closure sleeve according to claim 6 wherein the at least one slot is open to the upstream end and is configured to receive a nozzle attachment portion to connect a nozzle to the sleeve body.

8. A closure sleeve for a valve comprising:
a sleeve body surrounding a center axis and defined by an overall length extending from an upstream end to a downstream end, wherein the sleeve body has an internal cavity that is enclosed at the downstream end and open at the upstream end, wherein the sleeve body includes at least one slot formed within and open to the upstream end, the slot being defined by a slot width that extends circumferentially about the axis and a slot length that extends in a direction substantially parallel to the axis and extends axially to the upstream end, and a ratio of the slot width to the slot length is between 1.0 and 2.5.

9. The closure sleeve according to claim 8 wherein the internal cavity is defined in part by a piston contact surface that is defined by a piston interface length and an inner diameter, wherein the piston contact surface is configured to slide against a piston to be received within the internal cavity, and wherein a ratio of the piston interface length to the inner diameter is between 1.0 and 1.5.

10. The closure sleeve according to claim 8 wherein the sleeve body includes a plurality of windows that are axially spaced from the at least one slot, and wherein the windows are circumferentially spaced apart from each other adjacent to the upstream end, each window being defined by a window diameter, and wherein the sleeve body includes a damping orifice extending outwardly from the piston contact surface to an outer surface of the sleeve body, the damping orifice being defined by an orifice diameter, and wherein a ratio of the orifice diameter to the window diameter is between 0.075 and 0.100.

11. A closure sleeve for a valve comprising:
a sleeve body surrounding a center axis and defined by an overall length extending from an upstream end to a downstream end, wherein the sleeve body comprises a single-piece component,
wherein the sleeve body has an internal cavity that is enclosed at the downstream end and open at the upstream end, wherein the internal cavity is defined in part by a piston contact surface that is defined by a piston interface length and an inner diameter, wherein the piston contact surface is configured to slide against a piston to be received within the internal cavity,
wherein the sleeve body includes a plurality of windows circumferentially spaced apart from each other adjacent to the upstream end, each window being defined by a window diameter, and wherein the plurality of windows are configured to be in fluid communication with a first external chamber, and
wherein the sleeve body includes a damping orifice extending outwardly from the piston contact surface to an outer surface of the sleeve body, the damping orifice being defined by an orifice diameter, and wherein a ratio of the orifice diameter to the window diameter is between 0.075 and 0.100, and wherein the damping orifice is configured to be in fluid communication with a second external chamber that is separate from the first external chamber.

12. The closure sleeve according to claim 11 wherein a ratio of the piston interface length to the inner diameter is between 1.0 and 1.5, and wherein the first external chamber is at an outlet pressure and the second external chamber is at an input pressure.

13. The closure sleeve according to claim 11 wherein the sleeve body includes a retaining feature formed in the upstream end, the retaining feature configured to retain a nozzle component to the sleeve body to prevent axial separation therefrom, and wherein the retaining feature comprises at least one slot formed within the upstream end and axially spaced from the plurality of windows, the slot being defined by a slot width that extends circumferentially about the axis and a slot length that extends in a direction substantially parallel to the axis, and a ratio of the slot width to the slot length is between 1.0 and 2.5.

14. The closure sleeve for a valve according to claim 13 wherein the at least one slot is open to the upstream end to receive an extension formed on the nozzle component, and wherein the retaining feature further comprises a groove formed in the sleeve body to receive a fastener to prevent the nozzle component from separating from the sleeve body.

15. A closure sleeve and piston assembly for a valve comprising:
a sleeve body surrounding a center axis and defined by an overall length extending from an upstream end to a downstream end, wherein the sleeve body has an internal cavity that is enclosed at the downstream end and open at the upstream end, and wherein the internal cavity is defined in part by a piston contact surface that is defined by an inner diameter, and wherein the sleeve body includes a plurality of windows circumferentially spaced apart from each other adjacent to the upstream end, each window being defined by a window diameter; and
a piston received within the internal cavity, the piston having an inner bore that receives a spring assembly and a piston outer surface defined by a piston outer diameter that contacts the piston contact surface of the sleeve body in a slidi

Assignees

• Hamilton Sundstrand Corp

Inventors

• Rickis Aaron
• Marocchini Francis P

Classifications

• Y10T137/7927

  Ball valves · CPC title

• Y10T137/0497

  Fluid actuated or retarded · CPC title

• F04B49/035

  Bypassing · CPC title

• F16K17/04 Primary

  spring-loaded · CPC title