Reciprocating pump power end with monolithic core

Patent metadata

Field	Value
Publication number	US-12535069-B2
Application number	US-202418752080-A
Country	US
Kind code	B2
Filing date	Jun 24, 2024
Priority date	Jun 24, 2024
Publication date	Jan 27, 2026
Grant date	Jan 27, 2026

Abstract

A power end includes a monolithic core with a base having a surface configured to mount to a fluid end of the reciprocating pump and a plurality of extensions integral to the base. Each extension of the plurality of extensions includes a ring portion that defines an opening configured to receive a crankshaft of the reciprocating pump. The power end also includes a plurality of plates separate from the monolithic core. Each plate of the plurality of plates extends between a pair of adjacent of extensions of the plurality of extensions to enclose the monolithic core.

First claim

What is claimed is:

1 . A power end for a reciprocating pump, the power end comprising:
a monolithic core comprising:
a base comprising a surface configured to mount to a fluid end of the reciprocating pump and a plurality of ribs offset from one another along an axis and having a first opening configured to receive a pinion shaft of the reciprocating pump; and
a plurality of extensions, wherein each extension of the plurality of extensions extends from a respective rib of the plurality of ribs and is integral to the base, wherein each extension of the plurality of extensions comprises a ring portion that defines a second opening configured to receive a crankshaft of the reciprocating pump; and
a plurality of plates separate from the monolithic core, wherein each plate of the plurality of plates extends between a pair of adjacent of extensions of the plurality of extensions to enclose the monolithic core.

2 . The power end of claim 1 , comprising a plurality of apertures formed into the surface of the base and through the respective rib of the plurality of ribs for mounting the base to the fluid end.

3 . The power end of claim 2 , comprising a plurality of bores formed through the surface of the base, wherein each bore of the plurality of bores is configured to receive a reciprocating element driven by the crankshaft of the reciprocating pump, and each bore of the plurality of bores is positioned between the pair of adjacent extensions of the plurality of extensions.

4 . The power end of claim 2 , wherein each first opening of the plurality of ribs is configured to receive a bearing that facilitates movement of the crankshaft.

5 . The power end of claim 1 , comprising a support separate from the monolithic core and configured to couple to the monolithic core to support a weight of the power end on an additional surface.

6 . The power end of claim 5 , comprising an end assembly configured to couple to an end of the monolithic core, wherein the end assembly comprises the support.

7 . The power end of claim 6 , wherein the end assembly is configured to capture an extension of the plurality of extensions at the end of the monolithic core to couple the end assembly to the monolithic core.

8 . The power end of claim 1 , wherein a plate of the plurality of plates includes a third opening exposing the monolithic core to an exterior environment.

9 . A power end core for a power end of a reciprocating pump, the power end core comprising:
a base comprising a surface and a plurality of ribs offset from one another along an axis, wherein each rib of the plurality of ribs comprises a first opening configured to receive a pinion shaft; a plurality of extensions integral with the base, wherein each extension of the plurality of extensions extends from a respective rib of the plurality of ribs, and each extension of the plurality of extensions defines a second opening configured to receive a crankshaft of the reciprocating pump such that the pinion shaft facilitates movement of the crankshaft; and a plurality of apertures formed into the surface of the base for mounting the base to a fluid end of the reciprocating pump, wherein each aperture of the plurality of apertures is formed through the respective rib of the plurality of ribs.

10 . The power end core of claim 9 , comprising a plurality of bores formed into the surface of the base, wherein each bore of the plurality of bores is configured to receive a reciprocating element driven by the crankshaft of the reciprocating pump, and each bore of the plurality of bores extends between adjacent ribs of the plurality of ribs.

11 . The power end core of claim 9 , wherein each rib of the plurality of ribs extends to the surface of the base.

12 . The power end core of claim 9 , wherein the plurality of ribs extends at a first side of the power end core, and the base comprises an additional plurality of ribs extending at a second side, opposite the first side, of the power end core.

13 . The power end core of claim 12 , wherein each of the plurality of ribs is aligned with a respective one of the additional plurality of ribs along the axis.

14 . The power end core of claim 12 , comprising a plurality of additional apertures, wherein each additional aperture of the plurality of additional apertures is formed through a respective one of the additional plurality of ribs.

15 . A power end for a reciprocating pump, the power end comprising:
a base comprising a plurality of ribs offset from one another along an axis, wherein each rib of the plurality of ribs includes a first opening configured to receive a pinion shaft; a plurality of extensions integral with the base, wherein each extension of the plurality of extensions extends from a respective rib of the plurality of ribs such that extensions of the plurality of extensions are offset from one another along the axis, and each extension of the plurality of extensions defines a second opening configured to receive a crankshaft of the reciprocating pump; a plurality of frames separate from the base and from the plurality of extensions, wherein each frame of the plurality of frames is coupled to the respective rib of the plurality of ribs; a base plate configured to couple to an end of the base; an enclosure coupled to the base plate and defining a space configured to receive the crankshaft of the reciprocating pump; a pinion gear configured to couple to the pinion shaft in the space defined by the enclosure; and a bull gear configured to couple to the crankshaft in the space defined by the enclosure, wherein the bull gear is configured to engage with the pinion gear such that rotation of the pinion gear via rotation of the pinion shaft drives rotation of the bull gear and of the crankshaft.

16 . The power end of claim 15 , comprising a plurality of plates, where each plate of the plurality of plates is coupled to adjacent frames of the plurality of frames.

17 . The power end of claim 15 , comprising a plurality of apertures formed through the base, wherein each aperture of the plurality of apertures is configured to receive a coupler for coupling the power end to a fluid end of the reciprocating pump, and each aperture of the plurality of apertures is formed through the respective rib of the plurality of ribs.

18 . The power end of claim 15 , comprising:
a cap configured to couple to the enclosure to cover the space defined by the enclosure.

19 . The power end of claim 15 , comprising a plurality of bores formed into the base, wherein each bore of the plurality of bores is configured to receive a reciprocating element driven by the crankshaft of the reciprocating pump, and each bore of the plurality of bores extends between adjacent ribs of the plurality of ribs.

20 . The power end of claim 15 , wherein each rib of the plurality of ribs extends at a first side of the base, the base comprises a plurality of additional ribs extending at a second side of the base, each rib of the plurality of ribs is aligned with a respective additional rib of the plurality of additional ribs, and each frame of the plurality of frames is coupled to the respective rib of the plurality of ribs, a respective extension of the plurality of extensions, and the respective additional rib of the plurality of additional ribs.

Assignees

• Gd Energy Products Llc

Inventors

• Waldhoer Timo
• Hall Jr Randall Turner

Classifications

• F04B39/128

  Crankcases · CPC title

• F04B39/121

  Casings · CPC title

• F04B27/1081

  Casings, housings · CPC title

• F04B27/0891

  casings, housings · CPC title

• F04B9/1115

  the movement of the pumping pistons in only one direction being obtained by a single-acting piston liquid motor, e.g. actuation in the other direction by spring means · CPC title