Safety device against excess temperature

摘要

A safety device for containers pressurized with gas safeguards the gas side of the working chamber of hydraulic accumulators. A relief apparatus (2) reduces an elevated gas pressure in the container (3) caused by heat. The relief apparatus (2) is a component loaded under the influence of a shear force or compressive force. The shape change of the component under the influence of heat on the safety device (1) in a space (5) closed to the outside occurs such that a fluid-conducting connection (6) from the inside of the container (3) to the outside in the direction of the surroundings is enabled.

主权项

1. A safely device for gas-pressurized containers, comprising:
a relief housing having an inlet connection connectable in fluid communication to an interior of a gas-pressurized container and an outlet connection connectable in fluid communication to an environment exterior of the container; an interior space in said relief housing closed to an exterior thereof; a valve member movably mounted in said relief housing between a closed position preventing fluid communication between said inlet connection and said outlet connection and an open position allowing fluid communication between said inlet connection and said outlet connection; and a relief component in said interior space coupled to and maintaining said valve member in the closed position when unheated and allowing said valve member to move to the open position when heated to soften said relief component only without melting said relief component by at least one of buckling or bulging of said relief component under action of at least one of sheer force or compression force while remaining entirely in said interior space, said relief component being unrestrained laterally inwardly and outwardly between axial end regions thereof.