Method for measuring reactor bed level from active acoustic measurement and analysis
US8850881B2 · kind B2 · utility
2Cited by
14References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 8, 2009 |
| Grant date | Oct 7, 2014 |
| Priority date | — |
| Expiry date | Dec 1, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/2966
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a non-intrusive method to determine the fluid level in a vessel. In a preferred embodiment, the vessel is a delayed coker drum in a refinery. Waves are generated in the vessel from an outside source. For wall vibration generated in the frequency range of 1-20,000 Hz, accelerometers on the exterior wall of the vessel measures the frequency of the vibration modes of the vessel. The fluid level can be related to the frequency of the vibration mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.