Breakable safety valve for metal-made container

H - Electricity – 01 – M

Patent

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Details

H01M 2/12 (2006.01) B65D 51/16 (2006.01)

Patent

CA 2237363

A breakable safety valve installed to a metal-made container so as to add an explosion-proof function to the container. This valve is installed to a small- sized battery container, etc. When the internal pressure of the container abnormally rises due to overcharging etc., and reaches a specific value, the pressure is quickly released so as to prevent the danger to human bodies or damages to devices and machines caused by the blasting or deformation of the container, while the valve maintains the sealing of the container. The metal foil safety valve is manufactured by cold-welding metal foil to a metal-made container so as to block the vent hole of the container. When the internal pressure of the container reaches the specific value, the metal foil breaks, an opening is made in the container, and the internal pressure of the container is released.

Soupape de sûreté cassable fixée sur un récipient métallique, de façon à rendre ce dernier résistant aux explosions. La soupape est fixée au récipient d'un accumulateur de petite taille, etc. Quand la pression intérieure du récipient s'élève anormalement en raison d'une surcharge etc., et atteint une valeur spécifique, la pression est rapidement libérée de façon à éviter de mettre en danger des personnes ou d'endommager des appareils et des machines par suite de l'éclatement ou de la déformation du récipient, tandis que la soupape maintient le récipient hermétiquement fermé. On fabrique la soupape de sûreté constituée d'une feuille métallique en soudant celle-ci à froid sur un récipient métallique de façon à bloquer l'évent de ce dernier. Quand la pression intérieure du récipient atteint la valeur spécifique, la feuille métallique rompt, une ouverture se crée dans le récipient et la pression intérieure est libérée.

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