Unlock instant, AI-driven research and patent intelligence for your innovation.

Valve seats and valve assemblies for fluid end applications

A technology of fluid end and valve assembly, applied in the parts of the pumping device for elastic fluid, the parts in contact between the valve element and the valve seat, and the lift valve, etc., can solve the problem of carbide valve seat catastrophic failure and other problems

Active Publication Date: 2019-07-26
KENNAMETAL INC
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbide seats exhibit high hardness and wear resistance, carbide seats may occasionally fail catastrophically due to stresses in the carbide due to installation and removal forces, applied loads, and pressure fit with the fluid end

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Valve seats and valve assemblies for fluid end applications
  • Valve seats and valve assemblies for fluid end applications
  • Valve seats and valve assemblies for fluid end applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] Embodiments described herein may be understood more readily by reference to the following detailed description and examples, together with the preceding and following descriptions. However, the elements, devices, and methods described herein are not limited to the specific implementations described in the detailed description and examples. It should be recognized that these embodiments are illustrative only of the principles of the invention. Various modifications and alterations will be apparent to those skilled in the art without departing from the spirit and scope of the invention.

[0018] In one aspect, valve seats for fluid end applications are described herein. In some embodiments, the valve seat can alleviate the severe operating conditions of hydraulic fracturing applications, thereby extending life and reducing sudden valve seat failure. now refer to figure 1 , the valve seat 10 includes a first segment 11 for insertion into the fluid channel of the fluid e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
surface roughnessaaaaaaaaaa
surface roughnessaaaaaaaaaa
Login to View More

Abstract

The invention provides valve seats and valve assemblies for fluid end applications. In one aspect, valve seats are described herein having structure and design addressing degradative stresses encountered by valve seats during installation and operation in fluid ends. In some embodiments, a valve seat for use in a fluid end comprises a first section for insertion into a fluid passageway of the fluid end and a second section extending longitudinally from the first section, the second section has an outer diameter greater than the outer diameter of the first section. The second section also comprises a frusto-conical valve mating surface, wherein the second section is encased in a ring imparting a compressive stress condition to the second section.

Description

technical field [0001] The present invention relates to valve seats and valve assemblies for fluid end applications, and in particular to valve seats comprising cemented carbide components. Background technique [0002] Valves and associated valve assemblies play a key role in the fluid end of high pressure pumps that contain positive displacement pistons in multiple cylinders. Valve operating environments are often severe due to high pressure and periodic shocks between the valve body and seat. These severe operating conditions can lead to premature failure and / or leakage of the valve assembly. Additionally, fluid passing through the fluid port and contacting the valve assembly may include high levels of particulate matter from hydraulic fracturing operations. In hydraulic fracturing, a slurry of particles is used to maintain fracture openings in a geological formation after water pressure from a well is released. In some embodiments, alumina particles are used in the sl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16K51/00
CPCF16K1/42F16K25/005F04B53/1087F04B1/0452F04B53/16F04B15/02C22C29/08B22F7/08B22F5/106F04B39/10C22C29/067F04B37/12C22C19/055F16K17/0466
Inventor C.巴特科维雅克R.斯塔克M.凯利J.布罗斯纳安
Owner KENNAMETAL INC