Pressure relief device having support member with recessed areas
An apertured rupture disc support member ( 32, 90 ) is provided for use in a rupture disc assembly ( 70 ). A rupture disc ( 30, 30 a ) comprising one or more embossed segments ( 80 ) that are complemental with the support member apertures ( 56 ) is also disclosed. The pressure relief assembly ( 12 ) is particularly suited for use in sanitary pressure relief applications.
1. A rupture disc comprising a central rupturable portion and a circumscribing flange section, said flange section including one or more embossed segments.
2. The rupture disc according to claim 1 , wherein said one or more embossed segments are substantially uniformly distributed on said flange section.
3. The rupture disc according to claim 1 , wherein said central rupturable portion comprises a concavo-convex bulged section.
4. The rupture disc according to claim 3 , wherein said rupture disc is a reverse-acting rupture disc.
5. The rupture disc according to claim 4 , wherein said dome section includes a recessed line of opening formed in the concave portion of said bulged section.
6. The rupture disc according to claim 4 , wherein said bulged section comprises an area of altered metallic grain structure.
7. The rupture disc according to claim 1 , wherein said one or more embossed segments are separated from each other by one or more triangular sections, each of said triangular sections comprising an apex portion and an opposing base portion, said apex portion being located inboard of said base portion.
8. A pressure relief device comprising the rupture disc according to claim 1 and a rupture disc support member.
9. The pressure relief device according to claim 8 , wherein said rupture disc support member includes an annular inner hub, an outer peripheral portion radially spaced from said inner hub, and one or more connector segments extending between said inner hub and said outer peripheral portion, said connector segments defining one or more relief areas located between said inner hub and said outer peripheral portion.
10. The pressure relief device according to claim 9 , wherein said support member inner hub comprises a tongue segment that extends inwardly into the hub annulus and is configured to support a hinge section of said rupture disc during opening thereof.
11. The pressure relief device according to claim 9 , wherein said one or more connector segments are substantially triangular in shape, each of said one or more connector segments having a narrow apex portion and an opposing base portion, the apex portion of each connector segment being connected to said inner hub, and the base portion of each connector segment being connected to said outer peripheral portion.
12. The pressure relief device according to claim 9 , wherein said one or more relief areas are substantially uniformly distributed on said support member outboard of said inner hub.
13. The pressure relief device according to claim 9 , wherein said outer peripheral portion forms a continuous ring.
14. The pressure relief device according to claim 9 , wherein said outer peripheral portion comprises one or more discontinuous, arcuate segments.
15. The pressure relief device according to claim 8 , wherein said pressure relief device further comprises a two-ply annular gasket, said rupture disc and said support member being received between said gasket plies.
16. The pressure relief device according to claim 8 , wherein said one or more embossed segments are substantially uniformly distributed on said flange section.
17. The pressure relief device according to claim 8 , wherein said central rupturable portion comprises a concavo-convex bulged section.
18. The pressure relief device according to claim 17 , wherein said rupture disc is a reverse-acting rupture disc.