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

Packing followers for use with valves

A technology for gaskets and valves, which is applied in the field of gasket pressure rings, and can solve problems such as inability to maintain buckles, limitations, etc.

Active Publication Date: 2011-09-21
FISHER CONTROLS INT LLC
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, depending on the pressure requirements of the system, if the primary connection between the fluid flow control assembly and the shaft fails, the interaction between the retaining ring and the portion of the gasket follower may not be able to maintain the retaining ring in the recess. tank, so this configuration is limited to relatively low pressure applications

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
  • Packing followers for use with valves
  • Packing followers for use with valves
  • Packing followers for use with valves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Certain examples are shown in the above-identified figures and described in detail below. In describing these examples, like or identical reference numerals are used to designate identical or similar elements. The figures are not necessarily to scale and certain features and views in the figures may be shown exaggerated in scale or schematically for clarity and / or conciseness. Additionally, several examples are described throughout the specification. Any feature of any example may be included in, instead of, or combined with other features of other examples.

[0019] The exemplary packing follower described herein preferably allows redundant blowout preventer configurations to be implemented in valves having relatively high pressure ratings, which eliminates the limitations of known packing follower. In particular, the example gasket follower described herein is provided with a bore having a tapered inner surface configured to apply pressure with a first component an...

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

No PUM Login to View More

Abstract

A packing follower (514) for use with a valve (500) includes a body having an elongated portion(517) and a bore therethrough to receive a shaft (506). A portion (528) of the bore is tapered to exert a force on a retainer (510) that at least partially surrounds and is positioned within a groove (508) of the shaft when the shaft moves toward an opening defined by the body. Additionally, the force has a first component in a direction perpendicular to a longitudinal axis of the bore and a second component smaller than the first component in a direction parallel to the longitudinal axis of the bore.

Description

technical field [0001] This patent relates generally to gasket followers, and more particularly to gasket followers for valves. Background technique [0002] Process control equipment or systems usually employ rotary valves, such as ball valves, butterfly valves, eccentric disc valves, eccentric plug valves, etc., to control the flow of process fluids. In general, rotary valves typically include a fluid flow control member disposed in the fluid path and rotatably coupled to the rotary valve body by a shaft. Typically, a portion of the shaft protruding from the rotary valve is operatively coupled to a valve stem or actuator (e.g., pneumatic actuator, electric actuator, hydraulic actuator, etc.) of the rotary control valve . [0003] In some cases, to comply with standards established by regulatory bodies such as the American Society of Mechanical Engineers, redundant blowout preventers are added to valves to ensure that the shaft will is retained in the valve body. [000...

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): F16K41/02F16K41/06
CPCF16K41/026F16K1/2268
Inventor W·J·赫菲尔
Owner FISHER CONTROLS INT LLC