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

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...

AI Technical Summary

Benefits of technology

The patent describes a pump assembly with a fluid cylinder and a valve seat. The valve seat is designed to improve the distribution of loading between two surfaces. The valve seat includes a frusto-conical surface that matches the angle of the fluid cylinder. The valve seat can be positioned in the fluid cylinder to control the flow of fluid. The technical effect of this design is to improve the performance and efficiency of the pump assembly.

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 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.

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