Pump fluid end assembly mounting system

Patent metadata

Field	Value
Publication number	US-9976544-B2
Application number	US-201415328921-A
Country	US
Kind code	B2
Filing date	Jul 31, 2014
Priority date	Jul 31, 2014
Publication date	May 22, 2018
Grant date	May 22, 2018

Abstract

A system for mounting a fluid end ( 420 ) of a pump ( 400 ) to a power end ( 410 ) of the pump ( 400 ) includes an upper clamping bar ( 448 ) and a clamping assembly ( 460 ) that is adapted to removably clamp the fluid end ( 420 ) to the upper clamping bar ( 448 ). The clamping assembly ( 460 ) includes a clamp bar ( 462 ) having a first tapered clamping face ( 462 x ) that is adapted to contact a correspondingly tapered clamping face ( 448 x ) on the upper clamping bar ( 448 ) when the fluid end ( 420 ) is removably clamped to the upper clamping bar ( 448 ).

First claim

What is claimed:

1. A system for mounting a fluid end of a pump to a power end of said pump, the system comprising:
an upper clamping bar;
a clamping assembly that is adapted to removably clamp said fluid end to said upper clamping bar, said clamping assembly comprising a clamp bar having a first tapered clamping face that is adapted to contact a correspondingly tapered clamping face on said upper clamping bar when said fluid end is removably clamped to said upper clamping bar; and
a lower clamping rail having a tapered clamping face that is adapted to contact a correspondingly tapered clamping face on a lower clamping lip of said fluid end when said fluid end is removably clamped to said upper clamping bar, wherein said lower clamping rail is positioned vertically below said upper clamping bar.

2. The system of claim 1 , wherein said upper clamping bar has a front clamping face that is adapted to contact a front clamping face on an upper clamping lip of said fluid end and said lower clamping rail has a front clamping face that is adapted to contact a front clamping face on said lower clamping lip when said fluid end is removably clamped to said upper clamping bar.

3. The system of claim 1 , wherein said upper clamping bar and said lower clamping rail comprise a spacer frame that is adapted to be positioned between said fluid end and said power end when said fluid end is removably clamped to said upper clamping bar.

4. The system of claim 1 , wherein said clamping assembly further comprises a plurality of fasteners that are adapted to removably attach said clamp bar to said upper clamping bar, said first tapered clamping face on said clamp bar being adapted to slidingly engage said correspondingly tapered clamping face on said upper clamping bar and a second tapered clamping face on said clamp bar being adapted to slidingly engage a correspondingly tapered clamping face on an upper clamping lip of said fluid end as said plurality of fasteners removably attaching said clamp bar to said upper clamping bar are tightened to a predetermined preload.

5. The system of claim 1 , wherein a second tapered clamping face on said clamp bar is adapted to contact a correspondingly tapered clamping face on an upper clamping lip of said fluid end when said fluid end is removably clamped to said upper clamping bar.

6. The system of claim 5 , wherein a front clamping face on said upper clamping bar is adapted to contact a front clamping face on said upper clamping lip when said fluid end is removably clamped to said upper clamping bar, wherein said tapered clamping face on said upper clamping bar is oriented at a first acute angle relative to said front clamping face on said upper clamping bar, and wherein said tapered clamping face on said upper clamping lip is oriented at a second acute angle relative to said front clamping face on said upper clamping lip.

7. The system of claim 1 , wherein said lower clamping rail has a front clamping face that is adapted to contact a front clamping face on said lower clamping lip of said fluid end when said fluid end is removably clamped to said upper clamping bar, wherein said tapered clamping face on said lower clamping rail is oriented at a first acute angle relative to said front clamping face on said lower clamping rail, and wherein said tapered clamping face on said lower clamping lip is oriented at a second acute angle relative to said front clamping face on said lower clamping lip, said first acute angle being substantially the same as said second acute angle.

8. The system of claim 7 , wherein said lower clamping rail comprises a bottom clamping face that is positioned between said front clamping face and said tapered clamping face of said lower clamping rail and is oriented vertically upward toward said upper clamping bar, said bottom clamping face being adapted to be brought into contact with a contact face of a protrusion element extending from said lower clamping lip when said fluid end is removably clamped to said upper clamping bar, wherein said protrusion element is a positive stop protrusion element that is adapted to control a clamping preload imposed on said fluid end when said fluid end is removably clamped to said upper clamping bar.

9. A pump assembly, comprising:
a fluid end assembly that is adapted to pump a fluid, said fluid end assembly comprising an upper clamping lip and a lower clamping lip that is positioned vertically below said upper clamping lip;
a power end assembly that is adapted to generate pumping power so as to drive said fluid end assembly;
an upper clamping bar and a lower clamping rail coupled to said power end assembly, said lower clamping rail being positioned vertically below said upper clamping bar; and
a clamping assembly removably clamping said upper clamping lip of said fluid end assembly to said upper clamping bar and said lower clamping lip of said fluid end assembly to said lower clamping rail.

10. The pump assembly of claim 9 , wherein said clamping assembly comprises a clamp bar and a plurality of fasteners removably attaching said clamp bar to said upper clamping bar.

11. The pump assembly of claim 10 , wherein said upper clamping lip has a tapered clamping face in contact with a correspondingly tapered first clamping face on said clamp bar.

12. The pump assembly of claim 11 , wherein said upper clamping bar has a tapered clamping face in contact with a correspondingly tapered second clamping face on said clamp bar and a front clamping face in contact with a front clamping face on said upper clamping lip, and wherein said lower clamping rail has a tapered clamping face in contact with a correspondingly tapered clamping face on said lower clamping lip and a front clamping face in contact with a front clamping face on said lower clamping lip.

13. The pump assembly of claim 12 , wherein said lower clamping rail comprises a bottom clamping face that is positioned between said front clamping face and said tapered clamping face of said lower clamping rail and is oriented vertically upward toward said upper clamping bar, said bottom clamping face being in contact with a contact face of a positive stop protrusion element that extends from said lower clamping lip.

14. The pump assembly of claim 12 , wherein said tapered clamping face on said upper clamping bar is oriented at a first acute angle relative to said front clamping face on said upper clamping bar, and wherein said tapered clamping face on said lower clamping rail is oriented at a second acute angle relative to said front clamping face on said lower clamping rail.

15. The pump assembly of claim 11 , wherein said tapered clamping face on said upper clamping lip is oriented at a first acute angle relative to a front clamping face on said upper clamping lip.

16. The pump assembly of claim 9 , wherein said upper clamping bar and said lower clamping rail comprise a spacer frame assembly that is removably attached to said power end assembly.

17. A pump fluid end assembly that is adapted to be removably clamped to a pump power end assembly, the pump fluid end assembly comprising:
a pump housing; and
an upper clamping lip extending from said pump housing, said upper clamping lip having a front clamping face and a tapered clamping face that is oriented at a first acute angle relative to said front clamping face, wherein said front clamping face is adapted to slidingly engage a front clamping face of an upper clamping bar that is coupled to said pump power end assembly and said tapered clamping face is adapted to slidingly engage a correspondingly tapered clamping face of a

Assignees

• Fmc Tech Inc

Inventors

• Morreale John D

Classifications

• F04B53/22

  Arrangements for enabling ready assembly or disassembly · CPC title

• F04B53/162

  Adaptations of cylinders · CPC title

• F04B53/147

  Mounting or detaching of piston rod · CPC title

• F04B39/14 Primary

  Provisions for readily assembling or disassembling · CPC title

• F04B39/125

  Cylinder heads · CPC title