Non-fragmenting pressure relief apparatus

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 90/36 (2006.01) B65D 51/16 (2006.01) F16K 17/14 (2006.01) F16K 17/40 (2006.01)

Patent

CA 2543392

Non-fragmenting pressure relief apparatus includes at least one circular rupture disc having a central asymmetric bulged section and a peripheral flange portion. A semi-circular line of weakness extends around the periphery of the bulged section and presents a hinge portion between the ends of the line of weakness. A hold-down member for the rupture disc having an inner opening surrounding the bulged section of the disc is provided with a unitary segment that extends into the inner opening of the hold-down member. The spaced end extremities of the line of weakness extend beneath the hold-down member segment. The hinge portion of the disc upon rupture of the disc bends about a fulcrum defined by the outer margin of the hold-down segment, which in conjunction with deflection of the segment of the hold-down member contributes to anti-fragmentation of the disc.

L'invention concerne un appareil limiteur de pression. Ledit appareil comprend au moins un disque de rupture circulaire présentant une section bombée asymétrique centrale et une partie collerette périphérique. Une ligne semi-circulaire de fragilité s'étend autour de la périphérie de la section bombée et présente une partie charnière entre les extrémités de la ligne de fragilité. Un élément de retenue du disque de rupture présentant une ouverture intérieure entourant la section bombée du disque présente un segment unitaire qui s'étend dans l'ouverture intérieure de l'élément de retenue. Les extrémités terminales espacées de la ligne de fragilité s'étendent sous le segment de l'élément de retenue. La partie charnière du disque se plie autour d'un point d'articulation défini par la marge extérieure du segment de retenue lors de la rupture du disque, ce qui, conjointement à la déflexion du segment de l'élément de retenue, contribue à l'anti-fragmentation du disque.

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