Pump fluid cylinder including load transfer shoulder and valve seat for same

a technology of fluid cylinder and pump assembly, which is applied in the direction of positive displacement liquid engine, piston pump, liquid fuel engine, etc., can solve the problems of fatigue to failure, high load and frequency of inlet and outlet valves,

Inactive Publication Date: 2013-08-08
S P M FLOW CONTROL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0004]In a first aspect, there is provided a pump assembly that includes a fluid cylinder having a first axis and a second axis perpendicular thereto. The fluid cylinder includes a first fluid passage through which fluid flows along the first axis, the first fluid passage defining a first tapered internal shoulder of the fluid cylinder, the first tapered internal shoulder defining a first frusto-conical surface, the first frusto-conical surface defining a first angle from the second axis; The pump assembly further includes a first valve to control flow of fluid through the first fluid passage. The first valve includes a first valve seat disposed in the first fluid passage. The first valve seat includes a seat body that includes an inlet end portion and an outlet end portion opposed thereto along th...

Problems solved by technology

During operation, the inlet and outlet valves typically experience high loads and frequencies.
In some cases, valve seats of the inlet and outlet v...

Method used

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  • Pump fluid cylinder including load transfer shoulder and valve seat for same
  • Pump fluid cylinder including load transfer shoulder and valve seat for same
  • Pump fluid cylinder including load transfer shoulder and valve seat for same

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Embodiment Construction

[0032]In an exemplary embodiment, as illustrated in FIG. 1, a reciprocating pump assembly is generally referred to by the reference numeral 10 and includes a power end portion 12 and a fluid end portion 14 operably coupled thereto. The power end portion 12 includes a housing 16 in which a crankshaft (not shown) is disposed, the crankshaft being operably coupled to an engine or motor (not shown), which is adapted to drive the crankshaft. The fluid end portion 14 includes a fluid end block or fluid cylinder 18, which is connected to the housing 16 via a plurality of stay rods 20. The fluid cylinder 18 includes a fluid inlet passage 22 and a fluid outlet passage 24, which are spaced in a parallel relation. A plurality of cover assemblies 26, one of which is shown in FIG. 1, is connected to the fluid cylinder 18 opposite the stay rods 20. A plurality of cover assemblies 28, one of which is shown in FIG. 1, is connected to the fluid cylinder 18 opposite the fluid inlet passage 22. A plun...

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PUM

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Abstract

According to one aspect, a pump assembly includes a fluid cylinder, and the fluid cylinder includes a fluid passage that defines a tapered internal shoulder of the fluid cylinder. The tapered internal shoulder defines a first frusto-conical surface. A valve controls flow of fluid through the fluid passage. The valve includes a valve seat, which includes a seat body disposed in the fluid passage, and a bore formed through the seat body and through which fluid flows. The seat body includes inlet and outlet end portions, wherein the fluid flows into the bore at the inlet end portion and flows out of the bore at the outlet end portion. The inlet end portion of the seat body defines a second frusto-conical surface. In one embodiment, the second frusto-conical surface engages the first frusto-conical surface to distribute and transfer loading.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of the filing date of U.S. provisional patent application No. 61 / 594,493, filed Feb. 3, 2012, the entire disclosure of which is incorporated herein by reference.TECHNICAL FIELD[0002]This disclosure relates in general to pump assemblies and, in particular, a reciprocating pump assembly including a fluid cylinder and valve seats.BACKGROUND OF THE DISCLOSURE[0003]Reciprocating pump assemblies typically include fluid end blocks or fluid cylinders and inlet and outlet valves disposed therein. During operation, the inlet and outlet valves typically experience high loads and frequencies. In some cases, valve seats of the inlet and outlet valves, as well as portions of the fluid cylinder engaged therewith, may be subjected to highly concentrated cyclic loads and thus may fatigue to failure. Therefore, what is needed is an apparatus or method that addresses one or more of the foregoing issues, among others.SUMMAR...

Claims

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Application Information

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IPC IPC(8): F04B7/02
CPCF04B7/02F04B53/162F04B53/10
Inventor BYRNE, JOSEPH H.DILLE, MARK CHRISTOPHERBAYYOUK, JACOB A.
Owner S P M FLOW CONTROL
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