METHOD AND APPARATUS FOR MONITORING A FLUID CONDUIT SYSTEM FOR LEAKS

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 thi...

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Bibliographische Detailangaben
Hauptverfasser:	HYLDIG, POUL E, MOLBAEK, JENS J, STRAEDE, BJARNE, STENSTROM, THEISS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING HEATING LIGHTING MEASURING MECHANICAL ENGINEERING PHYSICS PIPE-LINE SYSTEMS PIPE-LINES STORING OF DISTRIBUTING GASES OR LIQUIDS TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR WEAPONS
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Beschreibung
Zusammenfassung:	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 pressures together with known constants for the conduit system. Fig. 1