Reverse buckling sanitary rupture disc assembly

Details Reverse buckling sanitary rupture disc assembly Reverse buckling sanitary rupture disc assembly

B - Operations, Transporting

65

D

B65D 90/36 (2006.01)

Patent

CA 2520592

A metal reverse buckling sanitary rupture disc (12) is provided having a central bulged section (16) in which the convex surface of the bulged section (16) is relatively smooth and of substantially uninterrupted configuration. A small segment region (22) of the central bulged section (16) is strain hardened by plastic deformation causing the segment region (22) to have greater residual stress than the remainder of the central bulged section. When the disc (12) is subjected to an overpressure condition against the convex surface of the bulged section (16) sufficient to effect reversal of the bulged section (16), such reversal commences at the higher residual stress segment region (22) of the bulged section (16).

L'invention concerne un ensemble de disque de rupture sanitaire à flambage inverse comportant une région centrale bombée dans laquelle la surface convexe est relativement lisse et présente une configuration sensiblement continue. Une petite région segmentaire de la région centrale bombée est durcie à froid par fluage plastique fournissant à la région segmentaire une tension résiduelle plus forte qu'au restant de la région centrale bombée. Lorsque le disque est soumise à des conditions de surpression contre la surface convexe de la région bombée suffisamment fortes pour provoquer l'inversion de la région bombée, une telle inversion commençant dans la région segmentaire à tension résiduelle plus forte de la région bombée.

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