Fluid end with extension plate

Patent metadata

Field	Value
Publication number	US-12480488-B2
Application number	US-202418754667-A
Country	US
Kind code	B2
Filing date	Jun 26, 2024
Priority date	Jul 3, 2023
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

A fluid end of a reciprocating pump that includes a housing defining multiple bores extending therein. In one embodiment, the present invention involves coupling a plate to a side of a smaller fluid end forging, thereby extending the overall length of the forging to capture the outer tie rods or stay rods that a larger forged fluid end typically captures. The plate allows a smaller forged fluid end to be utilized in a tie rod spacing that is outside of the smaller fluid end envelope. In one embodiment, the plate can partially capture the side or end surface of the fluid end. In another embodiment, the plate can fully capture the side or end surface of the fluid end.

First claim

What is claimed is:

1 . A fluid end assembly of a high-pressure reciprocating pump, comprising:
a housing having at least one bore formed therein, the housing having a first surface, a second surface opposite the first surface, a first upper surface, a first lower surface opposite the first upper surface, and a first end surface; and a plate coupled to the housing proximate to the first end surface of the housing, the plate having a third surface, a fourth surface opposite the third surface, a second upper surface, a second lower surface opposite the second upper surface, and a second end surface, and a first inner surface, wherein when the plate is coupled to the housing, a tie rod can be captured between the plate and the housing and the tie rod extending parallel to the first end surface.

2 . The fluid end assembly of claim 1 , wherein when the plate is coupled to the housing, the third surface is aligned with and co-planar with the first surface, the fourth surface is aligned with and co-planar with the second surface, and the second lower surface is aligned with and co-planar with the first lower surface.

3 . The fluid end assembly of claim 1 , wherein the second upper surface of the plate includes a curved surface portion that defines a cavity, the housing includes a discharge flange extending from the first end surface, and a portion of the discharge flange engages the cavity.

4 . The fluid end assembly of claim 1 , wherein the second upper surface is aligned with and co-planar with the first upper surface.

5 . The fluid end assembly of claim 1 , wherein the first inner surface of the plate is proximate to the first end surface of the housing when the plate is coupled to the housing.

6 . The fluid end assembly of claim 1 , wherein the housing includes a third end surface opposite to the first end surface, the plate is a first plate, and the fluid end assembly further comprises:
a second plate coupled to the housing proximate to the third end surface, the second plate and the housing defining another passageway therebetween for another tie rod.

7 . The fluid end assembly of claim 1 , wherein the housing includes a first recess formed in the first end surface, the first recess is sized to receive a portion of the tie rod therein, the plate includes a second recess formed in the first inner surface, the second recess is sized to receive a portion of the tie rod therein, the second recess is proximate to the first recess, and the first recess and the second recess collectively form a passageway for the tie rod.

8 . The fluid end assembly of claim 7 , wherein the passageway is a first passageway, the tie rod is a first tie rod, the housing includes a third recess formed in the first end surface, the plate includes a fourth recess, the fourth recess is proximate to the third recess, the third recess and the fourth recess collectively form a second passageway, and a second tie rod can be captured in the second passageway between the plate and housing.

9 . A fluid end assembly of a high-pressure reciprocating pump, comprising:
a housing having at least one bore formed therein, the housing having a first end surface and a second end surface opposite the first end surface, the first end surface having a first recess formed therein and extending therealong, the second end surface having a second recess formed therein and extending therealong; a first plate coupled to the housing proximate to the first end surface, the first plate including a first inner surface located proximate to the first end surface of the housing, the first inner surface having a third recess formed therein and extending therealong, the third recess and the first recess collectively forming a first tie rod passageway; and a second plate coupled to the housing proximate to the second end surface, the second plate including a second inner surface located proximate to the second end surface of the housing, the second inner surface having a fourth recess formed therein and extending therealong, the fourth recess and the second recess collectively forming a second tie rod passageway.

10 . The fluid end assembly of claim 9 , wherein the housing includes a first upper surface, the first plate includes a second upper surface, and the second upper surface is aligned with and co-planar with the first upper surface when the first plate is coupled to the housing.

11 . The fluid end assembly of claim 9 , wherein each of the first recess and the third recess is sized to receive a portion of a first tie rod therein, and each of the second recess and the fourth recess is sized to receive a portion of a second tie rod therein.

12 . The fluid end assembly of claim 9 , wherein each of the first plate and the second plate is coupled to the housing via connectors extending through the respective first plate or second plate and into the housing.

13 . The fluid end assembly of claim 9 , wherein the first plate includes several surfaces, the housing includes several surfaces, and at least one of the several surfaces of the first plate is aligned with and is co-planar with one of the several surfaces of the housing.

14 . The fluid end assembly of claim 13 , wherein one of the several surfaces of the first plate is an upper surface, the upper surface includes a curved surface portion that defines a cavity, the housing includes a discharge flange extending from the first end surface, and a portion of the discharge flange engages the cavity.

15 . A fluid end assembly of a high-pressure reciprocating pump, comprising:
a housing having at least one bore formed therein, the housing having a first end surface and a second end surface opposite the first end surface, the first end surface having a first recess formed therein, the second end surface having a second recess formed therein; a first plate coupled to the housing proximate to the first end surface via at least one first connector, the first plate having a third recess formed therein, the third recess and the first recess collectively forming a first tie rod passageway; a second plate coupled to the housing proximate to the second end surface via at least one second connector, the second plate having a fourth recess formed therein, the fourth recess and the second recess collectively forming a second tie rod passageway; a first tie rod extending through the first tie rod passageway and extending parallel to the first end surface; and a second tie rod extending through the second tie rod passageway and extending parallel to the second end surface.

16 . The fluid end assembly of claim 15 , wherein the first plate includes several surfaces, the housing includes several surfaces, and at least one of the several surfaces of the first plate is aligned with and is co-planar with one of the several surfaces of the housing.

17 . The fluid end assembly of claim 15 , wherein one of the several surfaces of the first plate is an upper surface, the upper surface includes a curved surface portion that defines a cavity, the housing includes a discharge flange extending from the first end surface, and a portion of the discharge flange engages the cavity.

18 . The fluid end assembly of claim 15 , wherein the housing includes a first upper surface, the first plate includes a second upper surface, and the second upper surface is aligned with and co-planar with the first upper surface when the first plate is coupled to the housing.

19 . The fluid end assembly of claim 15 , wherein each of the first recess and the third recess rece

Assignees

• Gd Energy Products Llc

Inventors

• Black James
• Woosley Kale
• Kachkovskiy Vadim

Classifications

• F04B53/007

  Cylinder heads · CPC title

• F04B19/22

  of reciprocating-piston type · CPC title

• F04B53/16 Primary

  Casings; Cylinders; Cylinder liners or heads; Fluid connections · CPC title

• F04B15/02 Primary

  the fluids being viscous or non-homogeneous · CPC title