The operations, limitations and successful applications of portable, nonintrusive instrument currently in use by the U.S. Navy to detect internal leakage through shipboard steam, water, hydraulic and high pressure air valves are described. The Acoustic Valve Leak Detector (AVLD), developed by the David Taylor Naval Ship R a. D Center, listens for the ultrasonic emissions characteristic of internal valve leakage. The AVLD is being used for troubleshooting, for overhaul planning, and in a systematic preventive maintenance monitoring program. The acoustic emission signatures which characterize leakage through steam, high pressure air, and water valves are presented and leakage rate measurements on specific valves are given as examples. The salient features of a maintenance/safety program based on AVLD and related equipments are reviewed.
Acoustic valve leakage measurement - How, why and when
Akustische Messung der Leckage an Ventilen - Wie, warum und wann
1983
5 Seiten, 2 Bilder, 2 Quellen
Aufsatz (Konferenz)
Englisch
GERAEUSCHMESSUNG , VENTIL , SCHIFF , HYDRAULIK , DAMPF , HOCHDRUCK (MECHANIK) , LUFT , LECK , ULTRASCHALL , UEBERWACHUNG , GERAEUSCH
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