Pressure relief device

Details Pressure relief device Pressure relief device

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 17/18 (2006.01) F16K 17/16 (2006.01) F16K 17/40 (2006.01)

Patent

CA 2516995

A pressure relief device is provided. The pressure relief device includes a sealing member and a low-pressure support member that is adapted to provide support to the sealing member when the sealing member is subject to a certain pressure differential. The low pressure support member includes an annular flange and at least one supporting projection. A cutting element is adapted to puncture the sealing member when the sealing member is subject to a predetermined pressure differential. The pressure relief device may further include a high pressure support member and safety heads forming a pre-torqued assembly. The supporting projection may optionally include an area of weakness either wholly within or on the periphery thereof.

L'invention concerne un dispositif de décompression pourvu d'un élément d'étanchéité et d'un élément de support basse pression adapté pour servir de support à l'élément d'étanchéité lorsque ce dernier est soumis à un certain différentiel de pression. L'élément de support basse pression comprend un rebord annulaire et au moins une partie saillante de support. Un élément tranchant est adapté pour perforer l'élément d'étanchéité lorsque celui-ci est soumis à un différentiel de pression prédéterminé. Le dispositif de décompression peut également être pourvu d'un élément de support haute pression et de têtes de protection formant un ensemble sur lequel a été préalablement appliqué un couple. La partie saillante de support peut éventuellement comprendre une zone d'affaiblissement dans sa partie interne ou dans sa partie périphérique.

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