Abnormality monitoring apparatus for a pipeline
US5333501A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 17, 1992 |
| Grant date | Aug 2, 1994 |
| Priority date | — |
| Expiry date | Mar 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M3/243
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an abnormality monitoring apparatus of the present invention, a plurality of detectors (13, 14) are arranged at a plurality of positions in the axial direction of a pipeline (11) to detect respective sound waves (37) propagating from a position (B) of occurrence of abnormality. The aforementioned position is calculated from a sound wave detection time difference between the detectors (13, 14) and position between the detectors (13, 14). The apparatus further includes an abnormal waveform memory unit (28) for storing the waveforms of a plurality of kinds of typical abnormal sound waves generated from abnormality on the pipeline (11). A display device (19) displays, on the same image screen, the abnormal waveform stored in the abnormal waveform memory unit and that of the sound wave detected. It is, therefore, possible for a monitoring personnel to readily identify a kind of abnormality occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.