Reverse buckling sanitary rupture disc assembly
AssigneeFike Corporation
InventorsMichael D. Krebill, E. Dean Miller
Life of this patent
Estimating the term…
Abstract
A metal reverse buckling sanitary rupture disc is provided having a central bulged section in which the convex surface of the bulged section is relatively smooth and of substantially uninterrupted configuration. A small segment region of the central bulged section is strain hardened by plastic deformation causing the segment region to have greater residual stress than the remainder of the central bulged section. When the disc is subjected to an overpressure condition against the convex surface of the bulged section sufficient to effect reversal of the bulged section, such reversal commences at the higher residual stress segment region of the bulged section.
Claims24
A reverse buckling sanitary rupture disc comprising:
- a unitary one-piece metal rupture disc having a central bulged section including a convex surface and an opposed concave surface, a flange portion surrounding the central bulged section, and a transition zone joining the flange portion to the central bulged section,
- the bulged section including a segment defining a discrete region in which the metal of the segment region has altered grain structure that exhibits greater residual stress than the metal of the remainder of the central bulged section, and
- the opposed convex and concave surfaces of the bulged section being smooth and of uninterrupted configuration throughout the entire area thereof including the segment defining said discrete region of the bulged section.
A reverse buckling sanitary rupture disc assembly comprising:
- a unitary one-piece metal rupture disc having a central bulged section presenting a central axis and including a convex surface and an opposed concave surface, a flange portion surrounding the central bulged section, and a transition zone joining the flange portion to the central bugled section,
- the bulged section a segment defining a discrete region in which the metal of the segment region has altered grain structure that exhibits greater residual stress than the metal of the remainder of the central bulged section,
- the opposed convex and concave surfaces of the bulged section being smooth and uninterrupted throughout the entire area thereof including the segment defining said discrete region of the bulged section;
- and
- an annular member mounted in supporting relationship to the face of the flange adjacent the concave surface of the rupture disc,
- said annular member having an inner edge, said inner edge being provided with inwardly extending, circumferentially spaced projections, which underlie the transition zone of the rupture disc and a part of the concave surface of the bulged section of the disc.
A reverse buckling sanitary rupture disc assembly as set forth in claim19, wherein said annular member is provided with an arm extending therefrom for facilitating alignment of the rupture disc assembly with a receptacle therefor.
Dependencies are inferred from the claim text.