Measuring and testing – With fluid pressure – Leakage
Patent
1991-04-24
1992-12-22
Williams, Hezron E.
Measuring and testing
With fluid pressure
Leakage
73 405R, G01M 328
Patent
active
051725827
ABSTRACT:
To detect escape or spillage of a cold liquid, for example liquefied natural gas, a narrow, robust, flexible, resilient, plastics tube, placed where the escaped or spilled cold liquid can contact it, is filled with carbon dioxide gas from a gas supply via a non-return valve and a pressure regulator which ensures that the maximum pressure in the tube is at a desired value which is preferably greater than the pressure of the ambient atmosphere surrounding the tube. A gas pressure drop detector is provided to observe a pressure drop in tube. Should escaped liquefied natural gas contact the tube the latter is so cooled that the carbon dioxide gas inside de-sublimates to a solid of greatly reduced volume causing a marked drop in pressure in the tube. This is observed by the pressure drop detector which initiates a warning or some safety action. A gas flow restrictor ensures the gas supply cannot rapidly re-charge the tube before the pressure drop detector has responded to the pressure drop.
REFERENCES:
patent: 3214963 (1965-11-01), Schlumberger et al.
patent: 3623337 (1971-11-01), Tremont
patent: 3942331 (1976-03-01), Newman, Jr. et al.
patent: 4344320 (1982-08-01), Haupt et al.
patent: 4404843 (1983-09-01), Johnson et al.
Painter David M.
Tench Robert B.
British Gas plc
Roskos Joseph W.
Williams Hezron E.
LandOfFree
Method of detecting escape or spillage of a cold liquid does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of detecting escape or spillage of a cold liquid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of detecting escape or spillage of a cold liquid will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-969169