G - Physics – 01 – M
Patent
G - Physics
01
M
354/31
G01M 3/28 (2006.01) F17D 5/02 (2006.01)
Patent
CA 2008727
ABSTRACT A method and apparatus are proposed for monitoring a fluid conduit system for leaks. To detect a leakage flow of less than 25 1/h, after closing a main valve (4), the time is measured that is taken by the pressure in the conduit system (12, 13) to drop to a predetermined first value. On reaching this value, a shunt valve (6) is opened and the time is measured that is required by the pressure to rise to a second predetermined value. The leakage flow is calculated from the two times and the two pres- sures together with known constants for the conduit system. Fig. 1
Hyldig Poul E.
Molbaek Jens J.
Stenstrom Theiss
Straede Bjarne
Danfoss A/s
Hyldig Poul E.
Macrae & Co.
Molbaek Jens J.
Stenstrom Theiss
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