Pipe leak detector

Details Pipe leak detector Pipe leak detector

1983-10-11

1986-02-25

Levy, Stewart J.

Measuring and testing

With fluid pressure

Leakage

73 493, 73 498, 138 90, G01M 308

Patent

active

045719861

ABSTRACT:
A pneumatic pipe leak tester which includes: a compressed air source; a conduit of a first circuit connectible through an on-off valve to a pipe to be examined and provided with an electromagnetic valve; a conduit of a second circuit connectible through an on-off valve to a pipe to be examined and provided with an electromagnetic valve; a main conduit connecting the conduits of the first and second circuits to the compressed air source; a conduit of a third circuit communicating the conduits of the first and second circuits with each other; a calibration conduit branched off from one of the conduits of first and second circuits and connectible to a reference pipe through an on-off valve; an electromagnetic valve inserted in the conduit of the third circuit; a pressure transducer connected parallel with the electromagnetic valve of the third circuit C; and a detector adapted to produce a leak signal when the output signal of the pressure transducer exceeds a predetermined value; and a mechanism for sealing compressed air in the conduits of the respective circuits to the test pipes or in the conduit to the reference pipe by opening or closing the electromagnetic valves.

REFERENCES:
patent: Re26657 (1969-09-01), Fitzpatrick et al.
patent: 2232199 (1941-02-01), Bald
patent: 2507124 (1950-05-01), Stillinger
patent: 3100986 (1963-08-01), Starr et al.
patent: 3316753 (1967-05-01), Le Roy Herren
patent: 3434337 (1969-03-01), Goeke
patent: 3499469 (1970-03-01), Vizuete et al.
patent: 3792607 (1974-02-01), Fukuda
patent: 4344320 (1982-08-01), Haupt et al.
patent: 4393674 (1983-07-01), Rasmussen

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