Abnormality monitoring apparatus for a pipeline

G - Physics – 01 – M

Patent

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Details

G01M 3/00 (2006.01) F16L 55/18 (2006.01) G01M 3/24 (2006.01)

Patent

CA 2066578

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.

Cette invention concerne un appareil de détection de singularités comportant une série de détecteurs (13, 14) disposés à divers endroits le long d'un pipeline (11) pour capter des ondes sonores (37) se propageant d'un point (B) correspondant à une singularité. Cette position est calculée à partir de la différence entre les temps de détection par les différents détecteurs (13, 14) et l'espacement desdits détecteurs (13, 14). L'appareil comporte en outre une mémoire (28) où sont stockées des ondes sonores singulières de différents types représentant des singularités susceptibles de se produire dans le pipeline (11). Un dispositif de visualisation (19) affiche sur le même écran l'onde sonore singulière en mémoire et l'onde sonore détectée. Le personnel de surveillance peut ainsi reconnaître le type de singularité qui s'est produit dans le pipeline.

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