Method and device for detecting and locating leaks in pipelines

Details Method and device for detecting and locating leaks in pipelines Method and device for detecting and locating leaks in pipelines

1981-06-29

1983-09-06

Stephan, Steven L.

Measuring and testing

With fluid pressure

Leakage

G01M 328

Patent

active

044022131

ABSTRACT:
A device for locating leaks in a pipe includes a leak locator probe (139) that is suitable for being transported along a length of pipe. The leak locator probe (139) includes a tube (148) that is closed at one end and open at the other end. An aperture (126) provides an air flow passageway between the interior of the tube and an annular volume exterior to the tube (148) as defined by the exterior walls of the tube (148), annular rings (146) and the interior walls of the pipe. Cables (158) and (158a) are utilized to reciprocate the leak locator probe (139) within the pipe. During operation, the leak locator probe (139) is inserted into the pipe in sealing contact therewith. The pipe is pressurized adjacent the open end of the probe (139) with the annular volume between the rings (146) pressurized through the orifice. When encountering a leak adjacent the annular volume, air is caused to flow through the aperture (136). A check valve (66) prevents air from flowing from the exterior of the tube (148) to the interior thereof.

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