Granted Patent B2

US 8,167,588 · App. 12/839,217 · Granted May 1, 2012

Abstract

Claims (26)

1. A reciprocating compressor frame comprising:

a hollow central body defining an interior volume; and

first and second crosshead guides configured to receive first and second crossheads respectively and to enable reciprocal movement of the respective first or second crosshead along an axis of the respective first or second crosshead guide, the first and second crosshead guides extending from opposite sides of the hollow central body and axially offset from one another along the hollow central body; and

a first crosshead guide support structure extending outwardly from the hollow central body, along the first crosshead guide, and toward a distal end of the first crosshead guide;

a second crosshead guide support structure extending outwardly from the hollow central body, along the second crosshead guide, and toward a distal end of the second crosshead guide;

wherein the first crosshead guide support structure is opposed to and at least partially axially overlaps the second crosshead guide along the hollow central body such that the first crosshead guide support structure is provided opposite the axis of the second crosshead guide about the hollow central body, and the second crosshead guide support structure is opposed to and at least partially axially overlaps the first crosshead guide along the hollow central body such that the second crosshead guide support structure is provided opposite the axis of the first crosshead guide about the hollow central body,

wherein each of the first and second crosshead guide support structures comprise an oblique support structure formed at an angle with respect to first and second dimensions of the respective crosshead guide, the first and second dimensions perpendicular to one another within a first plane that is perpendicular to the axis of the respective crosshead guide, to increase stiffness of the respective crosshead guide in both the first and second dimensions, wherein the first dimension is parallel to a second plane defined by a base of the reciprocating compressor frame, and

wherein the oblique support structure is formed at an angle equal to approximately forty-five degrees with respect to both the first and second dimensions of the respective crosshead guide to increase stiffness of the respective crosshead guide in substantially equal amounts in both the first and second dimensions.

2. The reciprocating compressor frame of claim 1 , wherein the hollow central body comprises a generally cylindrical body.

3. The reciprocating compressor frame of claim 1 , wherein each of the first and second crosshead guides and the first and second crosshead guide support structures are formed integrally with the hollow central body.

4. The reciprocating compressor frame of claim 1 , wherein the each of the first and second crosshead guide support structures comprises a plurality of said oblique support structures including at least a first pair of oblique support structures extending from opposite sides of the first crosshead guide and a second pair of oblique support structures extending from opposite sides of the second crosshead guide.

5. The reciprocating compressor frame of claim 1 , comprising a support rib formed orthogonally with respect to one of the first or second dimensions of the first crosshead guide.

6. The reciprocating compressor frame of claim 1 , wherein the distal ends of the first and second crosshead guides are configured to be coupled to respective compression cylinders.

7. The reciprocating compressor frame of claim 1 , comprising a support rib common to the first and second crosshead guides and the hollow central body.

8. The reciprocating compressor frame of claim 1 , comprising a support rib formed on a surface of the first or second crosshead guide and terminating at the hollow central body.

9. The reciprocating compressor frame of claim 1 , comprising a crankshaft disposed within the interior volume and coupled to each of the first and second crossheads via respective first and second connecting rods, wherein the crankshaft and the first and second crossheads are configured such that rotation of the crankshaft during operation induces linear motion of each of the first and second crossheads within its respective crosshead guide along the axis of the respective crosshead guide.

10. The reciprocating compressor frame of claim 1 , wherein the reciprocating compressor frame is a two-throw reciprocating compressor frame.

11. A reciprocating compressor frame comprising:

a central body having a longitudinal axis;

a plurality of crosshead guides including first and second crosshead guides extending from opposite sides of the central body, each of the first and second crosshead guides configured to enable reciprocal movement of a crosshead along an axis of movement within the first or second crosshead guide;

a plurality of angled support structures extending outwardly from the central body along one of the first or second crosshead guides, wherein each angled support structure is formed at non-orthogonal angles with respect to each of the following planes: a first plane parallel to the axis of movement of the first or second crosshead along which the respective angled support structure extends and perpendicular to the longitudinal axis of the central body; a second plane parallel to the axis of movement of the first or second crosshead along which the respective angled support structure extends and perpendicular to the first plane; and a third plane perpendicular to the first and second planes,

wherein at least one angled support structure of the plurality of angled support structures is formed along one of the first or second crosshead guides at a first non-orthogonal angle of approximately forty-five degrees with respect to the first plane and a second non-orthogonal angle of approximately forty-five degrees with respect to the second plane.

12. The reciprocating compressor frame of claim 11 , wherein the central body, the first and second crosshead guides, and the plurality of angled support structures are formed integrally with one another.

13. The reciprocating compressor frame of claim 11 , wherein the central body comprises a generally cylindrical body.

14. The reciprocating compressor frame of claim 11 , wherein the plurality of angled support structures include at least two angled support structures per crosshead guide of the plurality of crosshead guides.

15. The reciprocating compressor frame of claim 11 , including compression cylinders coupled to distal ends of the plurality of crosshead guides.

Assignments (7)