Measuring and testing – With fluid pressure – Leakage
Patent
1980-03-13
1981-12-22
Goldberg, Gerald
Measuring and testing
With fluid pressure
Leakage
G01M 328
Patent
active
043064469
ABSTRACT:
An apparatus for estimating the locality of a leaking spot in a pipeline which conveys a fluid, the apparatus comprising: a pair of detectors located on the pipeline at positions spaced from each other by a certain distance l and adapted to detect pressures P.sub.1 and P.sub.2 and pressure gradients .differential.P.sub.1 /.differential.x and .differential.P.sub.2 /.differential.x at the respective positions; and an operating unit adapted to calculate the locality of a leaking spot on the basis of the pressure gradients .differential.P.sub.1 /.differential.x and .differential.P.sub.2 /.differential.x and mean pressures P.sub.1 and P.sub.2 as obtained by memory-holding the pressures P.sub.1 and P.sub.2, by an operation of ##EQU1## wherein ##EQU2## E: estimated value x: distance from upstream detector to leaking spot
REFERENCES:
patent: 3667285 (1972-06-01), Wright et al
patent: 3690150 (1972-09-01), Mullen
patent: 3884077 (1975-05-01), Athy, Jr.
patent: 4012944 (1977-03-01), Covington et al.
patent: 4198855 (1980-04-01), Tsujikura
Agency of Industrial Science & Technology
Goldberg Gerald
Roskos Joseph W.
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