Valve for a reciprocating compressor

Patent metadata

Field	Value
Publication number	US-10215295-B2
Application number	US-201615576060-A
Country	US
Kind code	B2
Filing date	May 17, 2016
Priority date	May 22, 2015
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A valve for a reciprocating compressor comprises a valve body having a seat and a guard; a shutter element placed between the seat and the guard and configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; an hydraulic apparatus for moving the shutter element between the open and closed positions, the hydraulic apparatus comprising an hydraulic circuit having at least a portion integrated in the valve body.

First claim

What we claim is:

1. A valve for a reciprocating compressor comprising:
a valve body comprising a seat and a guard and defining a valve plane, the seat and the guard developing substantially parallel to the valve plane;
a shutter element placed between the seat and the guard and developing substantially parallel to the valve plane, the shutter element configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; and
a hydraulic apparatus to move the shutter element at least between the open and the closed position, the hydraulic apparatus comprising a hydraulic circuit having at least a portion integrated in the valve body such that a first portion of the hydraulic circuit is integrated in the seat and a second portion of the hydraulic circuit is integrated in the guard.

2. The valve according to claim 1 , wherein the hydraulic apparatus comprises a plurality of pistons, each piston being at least partially inserted into a respective housing inside the valve body and in contact with the shutter element.

3. The valve according to claim 2 , wherein a set of housings is provided inside the seat, and each piston of a subset of the plurality pistons is inserted into a respective housing of the first set of housings.

4. The valve according to claim 1 , wherein the shutter element is configured to also move between the closed position and at least an intermediate position allowing the passage of fluid at a reduced rate with respect to the open position.

5. A cylinder for a reciprocating compressor, the cylinder comprising at least a valve according to claim 1 .

6. A reciprocating compressor comprising a valve according to claim 1 .

7. A valve for a reciprocating compressor comprising:
a valve body comprising a seat and a guard and defining a valve plane, the seat and the guard developing substantially parallel to the valve plane;
a shutter element placed between the seat and the guard and developing substantially parallel to the valve plane, the shutter element configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; and
a hydraulic apparatus to move the shutter element at least between the open and the closed position, the hydraulic apparatus comprising a hydraulic circuit having at least a portion integrated in the valve body including a first portion integrated in the seat, and a plurality of pistons with each piston of the plurality of pistons at least partially inserted into a respective housing inside the valve body and in contact with the shutter element,
wherein a set of housings is provided inside the guard, and each piston of a subset of the plurality of pistons is inserted into a respective housing of the set of housings.

8. A valve for a reciprocating compressor comprising:
a valve body comprising a seat and a guard and defining a valve plane, the seat and the guard developing substantially parallel to the valve plane;
a shutter element placed between the seat and the guard and developing substantially parallel to the valve plane, the shutter element configured to move between a closed position in which the passage of fluid is prevented and an open position in which the passage of fluid is allowed; and
a hydraulic apparatus to move the shutter element at least between the open and the closed position, the hydraulic apparatus comprising a hydraulic circuit having at least a portion integrated in the valve body including a first portion integrated in the seat, and a plurality of pistons with each piston of the plurality of pistons at least partially inserted into a respective housing inside the valve body and in contact with the shutter element;
wherein a first set of housings is provided inside the seat and a second set of housing is provided inside the guard, and each piston of a first subset of the plurality of pistons is inserted into a respective housing of the first set of housings and each piston of a second subset of the plurality of pistons is inserted into a respective housing of the second set of housings.

9. The valve according to claim 8 , wherein each piston of the first subset is opposite to a corresponding piston of the second subset with respect to the shutter element.

10. The valve according to claim 9 , wherein each piston of the first subset is joined to a corresponding piston of the second subset.

Assignees

• Nuovo Pignone Tecnologie Srl

Inventors

• Babbini Alberto
• Orsi Gianni
• Maleci Riccardo
• Puccinelli Federico

Classifications

• F04B39/1053

  the members being Hoerbigen valves · CPC title

• F04B7/02 Primary

  the valving being fluid-actuated · CPC title

• F04B39/08

  Actuation of distribution members · CPC title

• F04B53/10

  Valves; Arrangement of valves · CPC title

• F04B49/225

  with throttling valves or valves varying the pump inlet opening or the outlet opening · CPC title