High pressure pump

Patent metadata

Field	Value
Publication number	US-12018662-B2
Application number	US-202217952729-A
Country	US
Kind code	B2
Filing date	Sep 26, 2022
Priority date	Nov 18, 2019
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

A high pressure pump. The pump comprises a fluid end assembly supported on a power end assembly. The power end assembly is modular and held together by a first set of stay rods. The fluid end assembly comprises a plurality of fluid end sections positioned in a side-by-side relationship. Each fluid end section comprises a housing made of multiple-piece construction. One or more pieces of the housing are configured to having a second set of stay rods attached thereto. The second set of stay rods interconnect the fluid end assembly and a power end assembly and a vertically offset from the first set of stay rods.

First claim

What is claimed is:

1. An apparatus, comprising:
a modular power end assembly secured together by a plurality of first stay rods, each of the plurality of first stay rods traversing a length of the modular power end assembly and terminating at opposed first and second ends of the modular power end assembly;
a modular fluid end assembly comprising:
a variable pressure section comprising at least one suction valve; and
a constant pressure section attached to the variable pressure section and comprising at least one discharge bore;
a stuffing box engaging the variable pressure section and having opposed first and second surfaces, the stuffing box further having a central passage and a plurality of passages formed therein, the plurality of passages surrounding the central passage; and in which the central passage and each of the plurality of passages open on the first surface of the stuffing box;
a plurality of fasteners, each fastener disposed within a corresponding one of the plurality of passages and attaching the stuffing box to the variable pressure section;
a plunger packing installed within the central passage of the stuffing box at the first surface of the stuffing box; and
a packing nut attached to the stuffing box and engaging the plunger packing; and

a plurality of second stay rods, each of the plurality of second stay rods projecting from the first end of the modular power end assembly and attached to the constant pressure section of the fluid end assembly.

2. The apparatus of claim 1 , in which the variable pressure section of the fluid end assembly is positioned between the constant pressure section of the fluid end assembly and the first end of the modular power end assembly such that the variable pressure section is positioned adjacent the plurality of second stay rods.

3. The apparatus of claim 1 , in which the plurality of second stay rods comprises:
a plurality of upper second stay rods; and
a plurality of lower second stay rods, each lower second stay rod in a spaced-relationship with each upper second stay rod;
in which the variable pressure section of the fluid end assembly is positioned intermediate the plurality of upper second stay rods and the plurality of lower second stay rods.

4. The apparatus of claim 1 , in which the fluid end assembly further comprises:
a plurality of fluid end sections positioned in a side-by-side relationship, each fluid end section comprising:
an individual variable pressure section comprising a suction valve; and
an individual constant pressure section attached to the individual variable pressure section and comprising a discharge bore;

in which the variable pressure section of the fluid end assembly comprises a plurality of the individual variable pressure sections and the at least one suction valve is one of the suction valves included within in one of the individual variable pressure sections;
in which the constant pressure section of the fluid end assembly comprises a plurality of the individual constant pressure sections and the at least one discharge bore is one of the discharge bores formed in one of the individual constant pressure sections.

5. The apparatus of claim 4 , in which each individual constant pressure section further comprises:
a first portion attached to a second portion;
in which the first portion has the discharge bore formed therein and houses at least a portion of a fluid routing plug;
in which the second portion comprises at least one suction bore; and
in which the second portion is positioned intermediate the first portion of the constant pressure section and the variable pressure section.

6. The apparatus of claim 1 , in which the modular fluid end assembly further comprises:
a retainer engaging the stuffing box and attached to the variable pressure section using the plurality of fasteners; in which the packing nut is installed within the retainer.

7. The apparatus of claim 4 , in which a length of each individual variable pressure section is greater than a length of each individual constant pressure section.

8. The apparatus of claim 1 , in which the modular power end assembly comprises:
a crank section comprising a crank shaft; and
a crosshead section offset from the crank section and comprising a plurality of crossheads.

9. The apparatus of claim 8 , wherein the modular power end assembly further comprises:
a rear support plate; and
a central support plate;
in which the plurality of first stay rods traverse the rear support plate, the crank section, the central support plate, and the crosshead section;
in which the crank section is disposed between the rear support plate and the central support plate;
in which the central support plate is disposed between the crosshead section and the crank section.

10. The apparatus of claim 9 , wherein the modular power end assembly further comprises:
a plurality of front support plates;
in which the plurality of front support plates are traversed by the plurality of first stay rods; and
in which the crosshead section is disposed between the plurality of front support plates and the central support plate.

11. The apparatus of claim 8 , in which each of the plurality of crossheads comprises:
a wrist pin disposed within a cavity formed in the crosshead; in which opposed ends of the wrist pin project from opposed sides of the crosshead;
in which the modular power end assembly further comprises:
a plurality of connecting rods, each connecting rod interconnecting the crank shaft and a corresponding one of the crossheads;
in which each connecting rod is attached to the opposed ends of the wrist pin using a plurality of fasteners.

12. The apparatus of claim 8 , in which each of the plurality of second stay rods traverses the crosshead section, but not the crank section.

13. The apparatus of claim 8 , in which the modular power end assembly further comprises:
a central support plate positioned between the crank section and the crosshead section;
in which each of the plurality of second stay rods is attached to the central support plate and traverses the crosshead section, but not the crank section.

14. The apparatus of claim 1 , further comprising:
a sleeve disposed around each of the plurality of second stay rods and interposed between the constant pressure section of the fluid end assembly and the first end of the modular power end assembly.

15. The apparatus of claim 1 , further comprising:
an upper suction manifold attached to the modular fluid end assembly;
a lower suction manifold attached to the modular fluid end assembly;
an upper discharge manifold attached to the modular fluid end assembly; and
a lower discharge manifold attached to the modular fluid end assembly.

16. The apparatus of claim 15 , in which the upper and lower suction manifolds are attached to the fluid end assembly by a plurality of suction conduits; in which the upper and lower discharge manifolds are attached to the modular fluid end assembly by a plurality of discharge conduits; and in which the plurality of suction conduits and the plurality of discharge conduits are made of a flexible material.

17. The apparatus of claim 1 , in which the plurality of second stay rods are in a spaced-relationship with the variable pressure section of the fluid end assembly.

18. The apparatus of claim 1 , in which at least a portion of each of a plurality of a reciprocating plungers are installed within the variable pressure section.

19. The apparatus of claim 1 , in which the variable pressure sect

Assignees

• Kerr Machine Co

Inventors

• Keith John
• Thomas Micheal Cole
• Barnett Christopher Todd
• Foster Kelcy Jake
• Son Nicholas

Classifications

• F16L55/11

  Plugs {(F16L55/128 takes precedence)} · CPC title

• F16K11/105

  Three-way check or safety valves with two or more closure members · CPC title

• F16K1/42

  Valve seats (for double-seat valves F16K1/44) · CPC title

• F04B53/162

  Adaptations of cylinders · CPC title

• F04B53/164

  Stoffing boxes · CPC title