Sealed pressure indicator

G - Physics – 01 – L

Patent

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Details

G01L 7/06 (2006.01) F16F 9/10 (2006.01) F17C 13/02 (2006.01) G01L 7/08 (2006.01)

Patent

CA 2431191

A pressure indicator (106) according to the present invention monitors the pressure of the fluid in a vessel (102). One embodiment of the present invention comprises a closed pressurized gas volume (210) behind a dimpled metal diaphragm (208). In normal operation, the force of the fluid pressure acting on the external surface of the diaphragm (208) to hold the diaphragm (208) in a concave geometry. In the event of a sufficient loss of fluid pressure, the force of the gas pressure acting on the internal surface of the diaphragm (208) will overcome the force of the fluid pressure acting on the external surface of the diaphragm (208), thereby moving the diaphragm (208) into a convex geometry. A viewing window (110) disposed in the side of the vessel (102) can be used to view the pressure indicator (106) and determine the shape of the indicator diaphragm (208).

La présente invention concerne un indicateur (106) de pression qui surveille la pression de fluide dans un récipient (102). Un mode de réalisation de l'invention comprend un volume (210) de gaz comprimé enfermé derrière une membrane (208) métallique alvéolée. En fonctionnement normal, la force de pression du fluide agit sur la surface externe de la membrane (208) de façon à maintenir cette membrane (208) dans une position concave. En cas de perte suffisante de pression de fluide, la force de pression du gaz qui agit sur la surface interne de cette membrane (208) dépasse la force de la pression du fluide agissant sur la surface externe de cette membrane (208), ce qui déplace cette dernière (208) en position convexe. Une fenêtre (110) de visualisation placée sur le côté du récipient (102) peut être utilisée pour visualiser l'indicateur (106) de pression et déterminer la forme prise par la membrane (208) de cet indicateur.

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