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Method and apparatus for bypassing a positioner in an efficient control loop

A control device, positioner technology, applied in the direction of valve operation/release, valve device, transportation and packaging, etc., which can solve the process cycle deactivation or shutdown, interference, actuator and/or valve cannot be adjusted And other issues

Active Publication Date: 2016-08-24
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When these valve positioners are repaired and / or replaced, the process cycle may need to be deactivated or shut down, or otherwise disturbed such that the position of the actuator and / or valve is fixed and cannot be adjusted

Method used

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  • Method and apparatus for bypassing a positioner in an efficient control loop
  • Method and apparatus for bypassing a positioner in an efficient control loop
  • Method and apparatus for bypassing a positioner in an efficient control loop

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Embodiment Construction

[0010] Some examples are shown in the figures above and described in detail below. In describing these examples, like or identical reference numerals are used to identify common or similar elements. The figures are not necessarily to scale and certain features and certain views of the figures may be shown exaggerated in scale or schematic for clarity and / or conciseness. Additionally, several examples are described throughout the specification. Any feature of any example may be included with, substituted for, or combined with other features of other examples.

[0011] Examples described herein relate to methods and apparatus that allow gas and / or electronic gas positioners (e.g., valve positioners) and / or associated components (e.g., circuit boards, I / P conversion modules, gas relays) , gas spools, built-in sensors, etc.) are repaired, replaced and / or otherwise maintained without interfering with, disrupting an effective or working control loop. Known methods of securing (e....

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PUM

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Abstract

Methods and apparatus for bypassing a positioner in an active control loop are described. An example actuator assembly includes a pneumatic actuator and a transfer station. The transfer station includes a body defining flow paths that enable fluid to flow between a supply pressure, a valve positioner, and the pneumatic actuator and between the supply pressure and the pneumatic actuator to bypass the valve positioner without disrupting a process loop including the valve positioner. The transfer station also includes a plurality of fluid flow control devices to control the fluid flow through the flow paths.

Description

technical field [0001] This patent relates to gas positioners and, more particularly, to methods and apparatus for bypassing positioners in an efficient control cycle. Background technique [0002] Process control systems use a large number of field devices to control process parameters. Valve positioners are commonly used in association with valve assemblies to control the position of actuators and / or valves. When these valve positioners are serviced and / or replaced, the process cycle may need to be deactivated or shut down, or otherwise disturbed so that the position of the actuator and / or valve is fixed and cannot be adjusted. Contents of the invention [0003] An exemplary transfer station for a valve positioner includes a body defining first, second and third flow paths, the first flow path allowing fluid to flow from a supply in a normal operating mode pressure flows to a valve positioner coupled to the body, the second flow path allows fluid to flow from the valve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/12F16K37/00
CPCF15B11/068F15B20/008F15B2211/30565F15B2211/3138F15B2211/31529F15B2211/85F15B2211/8636F15B2211/8752Y10T137/8733Y10T137/87338Y10T137/8741Y10T137/877Y10T137/87877
Inventor P·K·卡特B·F·格鲁姆斯特鲁普
Owner FISHER CONTROLS INT LLC