Acoustic probing technique for the determination of interior pipe coating wear or scale build-up and liner wear
US9759556B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2012 |
| Grant date | Sep 12, 2017 |
| Priority date | — |
| Expiry date | Mar 15, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/042
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus is provided comprising a signal processor that receives signaling containing information about an acoustic signal swept and sensed over a frequency range in relation to a pipe; and determines information about the structure of the pipe based at least partly on two or more sub-frequency ranges that form part of the frequency range in the signaling received. The signal processor also receives the acoustic signal being transmitted to the pipe and corresponding signaling in the two or more sub-frequency ranges containing information about reflections of the acoustic signal back from the pipe; and determines information about the structure of the pipe based at least partly on a coherent mixing of the acoustic signal and the corresponding signaling in the two or more sub-frequency ranges using a coherent acoustic tomography technique. Alternatively, the signal processor also receives associated signaling in the two or more sub-frequency ranges containing information about associated resonance in a liner of a wall of the pipe and determines information about the liner of the wall of the pipe, based at least partly on the two or more sub-frequency ranges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.