Measuring and testing – With fluid pressure – Leakage
Patent
1993-06-03
1994-12-27
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 405R, 73 40, 738658, G01M 320, G01M 328
Patent
active
053754573
ABSTRACT:
A method and device for detecting the location of leaks along a wall or piping system, preferably in double-walled piping. The apparatus comprises a sniffer probe, a rigid cord such as a length of tube attached to the probe on one end and extending out of the piping with the other end, a source of pressurized air and a source of helium. The method comprises guiding the sniffer probe into the inner pipe to its distal end, purging the inner pipe with pressurized air, filling the annulus defined between the inner and outer pipe with helium, and then detecting the presence of helium within the inner pipe with the probe as is pulled back through the inner pipe. The length of the tube at the point where a leak is detected determines the location of the leak in the pipe.
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Dixon Harold M.
Moser William R.
The United States of America as represented by the United States
Tumm Brian R.
Wiggins J. David
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