Fluid leak detector mechanism

G - Physics – 01 – M

Patent

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Details

G01M 3/32 (2006.01) A01D 34/62 (2006.01)

Patent

CA 2201765

A fluid leak detector mechanism having a main fluid tank an expansion tank for receiving fluid therefrom as the fluid becomes heated and expands and a sensing chamber operatively coupled with the main tank. A signalling mechanism signals to an operator when the level of fluid in the sensing chamber has dropped significantly to alert the operator of the presence of a leak. An oil return valve is operatively coupled between the main tank and the expansion tank and has an open position that allows fluid to flow back to the main tank from the expansion tank and a closed position that blocks oil from flowing from the expansion tank to the main tank. A temperature sensor senses the temperature of fluid. A control mechanism shifts the oil return valve to its open position when the temperature sensor detects a significant drop in fluid temperature thereby allowing the fluid levels to be reset with changes in fluid temperature.

Cette invention concerne un mécanisme de détection de fuites dans un ensemble réservoir principal et vase d'expansion, cette dernière servant à recevoir le liquide dilaté sous l'effet de la chaleur et comportant une enceinte de détection raccordée au réservoir principal. Un générateur de signal alerte le conducteur de l'installation lorsque le niveau de liquide dans l'enceinte de détection atteint le seuil d'alarme de fuite. Un clapet de renvoi d'huile interposé entre le réservoir principal et le vase d'expansion permet à l'huile de passer du vase au réservoir principal lorsqu'il est en position ouverte. En position fermée, elle bloque la voie entre ces deux éléments. Un capteur de température mesure la température du liquide et, couplé à un mécanisme de commande, force l'ouverture du clapet susmentionné lorsque la température du liquide chute de façon marquée, permettant ainsi le rétablissement du niveau de liquide dans le réservoir principal en fonction de la température de liquide mesurée.

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