Adjustment of stroke end positions of a process control valve
US11402030B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 11, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | May 11, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/41845
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of adjusting stroke end positions of a process control valve is provided. A valve control mechanism is set up to continuously determine an actual position value from a travel-measurement system value acquired by a travel-measurement system, taking a first travel-measurement system final value and a second travel-measurement system final value into account. The method comprises the recognition of a first stroke end position when the process control valve is fully closed, and the recognition of a second stroke end position when the process control valve is fully open. The method further comprises the storage of the travel-measurement system value corresponding to the first stroke end position as the first travel-measurement system final value, and the storage of the travel-measurement system value corresponding to the second stroke end position as the second travel-measurement system final value. The process control valve is a component of a process plant, and the steps of an associated process are carried out during operation of the process plant. The disclosure further relates to a corresponding program code, to a valve control mechanism, and to a process control valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.