Leak detector for natural gas pipelines

Details Leak detector for natural gas pipelines Leak detector for natural gas pipelines

1991-02-25

1992-06-02

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

73592, G01M 324

Patent

active

051176769

ABSTRACT:
A simple acoustic detection system is described for measuring leaks from long gas pipelines. Microphones are strung along (and attached to) the pipeline exterior. The outputs of the microphones are spectrally analyzed. A peak at a frequency f.congruent.V.sub.s /(2d) and its harmonics indicates a leak in the vicinity of the recording microphone, where V.sub.s is the velocity of sound in the gas and d is the thickness of the pipe wall.

REFERENCES:
patent: 4201092 (1980-05-01), Dau
patent: 4457163 (1984-07-01), Jackle

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