Method and device for testing gas carrying pipelines

Details Method and device for testing gas carrying pipelines Method and device for testing gas carrying pipelines

1996-01-29

1997-10-07

Williams, Hezron E.

Measuring and testing

Vibration

By mechanical waves

73644, 738665, 73592, G01N 2906

Patent

active

056750846

ABSTRACT:
For reducing the coupling liquid carried along during the performance of a test run of a device for testing gas carrying pipelines, the invention provides an ultrasonic gas carrying pipeline testing method, in which an overpressure is produced in a space containing a sensor carrier with ultrasonic sensors and a coupling liquid defined by the pipeline wall and scraper sleeves. An ultrasonic gas carrying pipeline testing device with a sensor carrier and a scraper sleeve positioned upstream thereof and connected thereto is characterized in that a connecting line (24) provided with a pump (26) passes from an area upstream of the scraper sleeve (22) to an area downstream of said scraper sleeve (22).

REFERENCES:
patent: 2723357 (1955-11-01), Van Valkenburg et al.
patent: 3400574 (1968-09-01), Cramer
patent: 3533447 (1970-10-01), Moore
patent: 4945775 (1990-08-01), Adams et al.
patent: 5495750 (1996-03-01), Dufresne

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