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

Ball valve seals with dynamic c-seal and static c-seal

A technology of seals and seal rings, applied to engine components, lift valves, valve devices, etc., can solve problems such as inaccuracy, low valve efficiency, and poor dynamic performance and control characteristics

Active Publication Date: 2015-07-29
FISHER CONTROLS INT LLC
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Likewise, friction has a tendency to increase as components wear more severely, thus degrading dynamic performance and control characteristics within the valve, making the valve inefficient and imprecise

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
  • Ball valve seals with dynamic c-seal and static c-seal
  • Ball valve seals with dynamic c-seal and static c-seal
  • Ball valve seals with dynamic c-seal and static c-seal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 Illustrated is a rotary ball valve 10 constructed in accordance with the principles of the present invention that generally includes a valve body 12 , a bonnet 14 , a control assembly 16 and a seal assembly 24 . The valve body 12 has a generally cylindrical shape and includes an inlet portion 18 , an outlet portion 20 , a main flow path 22 and a bonnet opening 25 next to the top of the valve body 12 . The main flow path 22 extends from the inlet portion 18 in a direction substantially parallel to the longitudinal axis A to the outlet portion 20 as indicated by the arrows. The inlet portion 18 is enclosed by an inlet flange 26 . The outlet portion 20 is enclosed by an outlet flange 28 . Inlet flange 26 and outlet flange 28 are adapted to couple ball valve 10 to a process control line, such as by screwing, welding, clamping, or other known means.

[0026]The bonnet 14 includes a generally cylindrical structure that is threaded to the bonnet opening 25 of the v...

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 seal assembly is provided for a rotary ball valve having a top -mounted bonnet (14), thereby allowing the seal assembly to be installed and removed without removing the valve from the pipeline. In an embodiment, the seal assembly may include a seal ring (44) disposed within the valve interior and biased toward the ball element of the valve. A seal carrier (46) may be disposed between the seal ring and the valve body, and the seal carrier may be removably secured to the valve body by a plurality of bolts disposed in the valve interior. A primairy leak path (50) may exists between the seal ring and the seal carrier and a secondary leak path (52) may exists between the seal carrier and the valve body. A first and second auxiliary seal (82,56) may prevent fluid flow through the primary and secondary leak path, respectively.

Description

technical field [0001] The present invention relates to fluid control devices, and more particularly, to rotary ball type fluid control valves. Background technique [0002] Rotary ball valves are used in a large number of process control system applications to control some parameters of process flows such as fluids, gases, and slurries. Basically control valves control the rate at which a fluid flows, although process control systems may use control valves to ultimately control pressure, level, pH, or other desired parameters of a fluid. [0003] In general, a rotary ball valve includes a valve body that defines a fluid inlet and a fluid outlet. A ball element is mounted in the valve body and rotates about a fixed axis to abut and disengage the seal assembly to control the amount of fluid flow through the valve. For a typical bolted inline ball valve, the seal assembly is inserted into the valve body via the fluid inlet and a seal protector ring is used to hold the seal a...

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 Patents(China)
IPC IPC(8): F16K5/06F16K1/226
CPCF16K5/205F16K5/0668Y10T29/49412
Inventor P·R·达鲁格L·O·达维斯W·V·菲茨格拉尔德
Owner FISHER CONTROLS INT LLC