Methods and apparatus to partial stroke test valves using pressure control
US9752599B2 · kind B2 · utility
6Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 7, 2014 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 4, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/87
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Methods and apparatus to partial stroke test valves using pressure control are disclosed. An example method includes generating a first pressure set point for a valve positioner coupled to an actuator to actuate a valve. The first pressure set point is associated with a partial stroke test of the valve. The example method also includes controlling an output pressure of the positioner towards the first pressure set point to actuate the valve in a stroke direction. The example method further includes determining whether the valve is stuck based on the output pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.