Pump system

Patent metadata

Field	Value
Publication number	US-10247184-B2
Application number	US-201615279739-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Sep 29, 2016
Publication date	Apr 2, 2019
Grant date	Apr 2, 2019

Abstract

A pump system includes a first pump and a second pump each having a plunger assembly. The plunger assembly includes a crosshead, a plunger, and a sleeve. The sleeve at least partially surrounds the plunger and an end of the crosshead. The sleeve is configured to create a fluid seal between the plunger and the crosshead.

First claim

The invention claimed is:

1. A plunger assembly, comprising:
a crosshead;
a plunger;
a sleeve at least partially surrounding the plunger and an end of the crosshead, wherein the sleeve forms a fluid seal between the plunger and the crosshead; and
a plurality of rods, wherein the crosshead is movable along the rods.

2. The plunger assembly of claim 1 , wherein the plunger assembly is disposed in a pump housing.

3. The plunger assembly of claim 2 , wherein the plurality of rods are disposed in the pump housing.

4. The plunger assembly of claim 1 , wherein the sleeve comprises a step formed therein for supporting a retainer plate.

5. The plunger assembly of claim 4 , wherein the retainer plate is positioned in the step of the sleeve.

6. The plunger assembly of claim 3 , further comprising a plurality of sealing members coupled to the sleeve and the plurality of rods.

7. A pump, comprising,
a pump housing defining an interior volume having a fluid end section and a power end section; and
a plunger assembly disposed in the pump housing, the plunger assembly comprising:
a crosshead disposed within a pump housing and movable along a plurality of rods;
a plunger extending between the fluid end section and the power end section; and
a sleeve at least partially surrounding the plunger and an end of the crosshead, wherein the sleeve fluidly isolates the power end section from the fluid end section.

8. The pump of claim 7 , wherein the sleeve comprises a step formed therein for supporting a retainer plate.

9. The pump of claim 8 , wherein the retainer plate is positioned in the step.

10. The pump of claim 7 , wherein the plunger assembly further comprises a plurality of sealing members coupled to the sleeve and the plurality of rods.

11. The pump of claim 7 , wherein the sleeve moves with the plunger as the plunger reciprocates between the power end section and the fluid end section.

12. The pump of claim 7 , wherein the sleeve fluidly isolates the power end section from lubrication fluid in the fluid end section.

13. A pump system, comprising:
a first pump having a first fluid end and a first power end;
a second pump having a second fluid end and a second power end, wherein the first pump is positioned adjacent the second pump such that the first power end abuts the second power end, wherein the first pump and second pump having a total length less than or equal to a roadway width restriction, and wherein the first pump and the second pump each comprise:
a pump housing defining an interior volume having a fluid end section and a power end section; and
a plunger assembly disposed in the pump housing, wherein the plunger assembly comprises:
a crosshead disposed in the pump housing and movable along a plurality of rods;
a plunger extending between the fluid end section and the power end section; and
a sleeve at least partially surrounding the plunger and an end of the crosshead, wherein the sleeve fluidly isolates the power end section from the fluid end section.

14. The pump system of claim 13 , wherein the sleeve comprises a step formed therein.

15. The pump system of claim 13 , wherein the plunger assembly further comprises a retainer plate positioned in the step.

16. The pump system of claim 13 , wherein the plunger assembly further comprises a plurality of sealing members coupled to the sleeve and the plurality of rods.

17. The pump system of claim 13 , wherein the sleeve moves with the plunger as the plunger reciprocates between the power end section and the fluid end section.

18. The pump system of claim 13 , wherein the sleeve fluidly isolates the power end section from lubrication fluid in the fluid end section.

19. A crosshead for use in a pump assembly, comprising:
an elongated body having a first opening that is parallel to a second opening; and
a plurality of fluid passages formed in the elongated body, the plurality of fluid passages, comprising:
a first fluid passage in communication with a fluid source;
a second fluid passage in communication with the first fluid passage, the second fluid passage configured to deliver fluid from the first fluid passage to the first opening; and
a third fluid passage in fluid communication with the first fluid passage, the third fluid passage configured to deliver fluid from the first fluid passage to the second opening.

20. The crosshead of claim 19 , wherein the first opening is formed at a top of the elongated body and the second opening formed at a bottom of the elongated opening, the first and second openings having equal diameters.

21. The crosshead of claim 20 , wherein the elongated body further comprises a third opening formed adjacent the first opening at the top of the elongated body, and a fourth opening formed adjacent the second opening at the bottom of the elongated body.

22. The crosshead of claim 19 , further comprising a connecting rod coupled to the elongated body by wristpin, wherein lubricating from the fluid source is supplied through fluid passage within the connecting rod and the wristpin that are in communication with the first fluid passage.

23. A crosshead for use in a pump assembly, comprising:
an elongated body having a first opening that is parallel to a second opening, wherein the first opening is formed at a top of the elongated body and the second opening formed at a bottom of the elongated body, and wherein the first and second openings having equal diameters; and
a plurality of fluid passages configured to deliver fluid to the first opening and the second opening, wherein the plurality of fluid passages is formed in the elongated body, the plurality of fluid passages comprises:
a first fluid passage in communication with a fluid source;
a second fluid passage in communication with the first fluid passage, the second fluid passage configured to deliver fluid from the first fluid passage to the first opening; and
a third fluid passage in fluid communication with the first fluid passage, the third fluid passage configured to deliver fluid from the first fluid passage to the second opening.

Assignees

• Forum Us Inc

Inventors

• Chunn Austin
• Freed Wesley
• Dille Mark C
• Arnoldy David

Classifications

• F04B9/045

  the means being eccentrics · CPC title

• F04B1/0448

  Sealing means, e.g. for shafts or housings (for pistons F04B1/0408 {; Stoffing boxes F04B53/164}) · CPC title

• F04B19/22

  of reciprocating-piston type · CPC title

• F04B1/0439

  Supporting or guiding means for the pistons · CPC title

• F04B53/143 Primary

  Sealing provided on the piston · CPC title