Emergency isolation valve controller with integral fault indicator
US7504961B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 2005 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86397
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A local logic solver operates with a local smart valve controller to control and test a local field-mounted emergency isolation valve device, outputting a local indication of trouble on the device, which is mounted in the field away from the facility's central control panel for the process. Accordingly, the operation of the overall system is simplified by eliminating the need for an external computer to diagnose any problems. A local control panel includes an indicator light substantially adjacent to or in close proximity to the device being monitored to alert personnel of detected faults. Detected faults are time-stamped locally to generate documentation and to track the elapsed time, starting when the degraded state of the device was detected and first signaled as a problem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.