Methods and apparatus for bypassing a positioner in an active control loop
US8910665B2 · kind B2 · utility
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10References
17Claims
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Key dates
| Filing date | Feb 28, 2011 |
| Grant date | Dec 16, 2014 |
| Priority date | — |
| Expiry date | Aug 8, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/87877
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.