Method and apparatus for detecting and locating leaks and loose

Details Method and apparatus for detecting and locating leaks and loose Method and apparatus for detecting and locating leaks and loose

1991-10-31

1994-01-18

Williams, Hezron E.

Measuring and testing

With fluid pressure

Leakage

324526, G01M 340

Patent

active

052791483

ABSTRACT:
A method of determining leaks and loose couplings in a pipe system which transfers liquid medium, and an apparatus for implementing that method. The pipe system includes a conduit having a beginning, an end, an inner pipe which carries the liquid medium and an outer pipe which surrounds the inner pipe. The conduit has a filler material which fills in an annular space between the inner and outer pipes. The leaks and loose couplings are detected and isolated by measuring only resistances of the filler material between the beginning of the conduit and ground yielding a first resistance value, between the end of the conduit and ground obtaining a second resistance value, and finally between the beginning of the conduit and the end of the conduit obtaining a third resistance value. The defect is then detected and located in the conduit using the first, second and third resistance values.

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