Self-aligning rupture disc

Claim 2

In a self-aligning rupture disc assembly adapted to block a flow passageway and having an inlet flange having an inlet passageway, an outlet flange, a pressure relief disc having an inlet surface and an outlet surface, said relief disc being sealed at said outlet surface with respect to said outlet flange, and a perforated vacuum support disc, the improvement comprising: a. A support disc mounting ring having an outer flange portion sealed with respect to said relief disc inlet surface and an inner centering sleeve portion extending axially of said flange portion and away from said relief disc, b. said sleeve portion being of lesser outside diameter than said inlet passageway and received thereinto, and c. a ledge projecting inwardly from said sleeve portion forming therewith a depressed seat receiving said vacuum support disc.

Claim 3

A self-aligning rupture disc assembly adapted to block a flow passageway, comprising: a. an outlet mounting ring having an internal diametral opening, an inlet flange having an inlet passageway and an outlet flange, b. a perforated pressure relief disc having an inlet surface and an outlet surface, said relief disc being secured to said outlet mounting ring against said outlet surface, c. a sealing means positioned adjacent said relief disc inlet surface to seal said flow passageway, d. a perforated vacuum support disc having a diameter less than said outlet mounting ring diametral opening, e. a support disc mounting ring adjacent said sealing member and having an outer flange portion and an inner centering sleeve portion extending axially of said flange portion and away from said sealing member, said sleeve portion being of lesser outside diameter than said inlet passageway and received thereinto, and f. a ledge projecting inwardly from said sleeve portion forming therewith a depressed seat receiving said vacuum support disc.

Claim 4

A self-aligning rupture disc assembly adapted to block a flow passageway, comprising: a. an outlet mounting ring having an internal diametral opening, an inlet flange having an inlet passageway and an outlet flange, b. a perforated pressure relief disc having an inlet surface and an outlet surface, said relief disc being secured to said outlet mounting ring against said outlet surface, c. a sealing means positioned adjacent said relief disc inlet surface to seal said flow passageway, d. a perforated vacuum support disc having a diameter less than said outlet mounting ring diametral opening, e. a support disc mounting ring adjacent said sealing member and having an outer flange portion and an inner centering sleeve portion extending axially of said flange portion and away from said sealing member, said sleeve portion being of lesser outside diameter than said inlet passageway and received thereinto, and f. a ledge projecting inwardly from said sleeve portion forming therewith a depressed seat receiving said vacuum support disc.

Claim 5

The assembly as set forth in claim 1 wherein: a. said vacuum support disc includes a tab projecting therefrom, b. said tab being secured to said ledge.

Claim 6

The assembly as set forth in claim 2 wherein: a. said vacuum support disc has a tab projecting from the periphery thereof and secured to said ledge.

Claim 7

The assembly as set forth in claim 2 including: a. an inlet mounting ring having an internal diametral opening receiving said sleeve portion therethrough.

Claim 8

The assembly as set forth in claim 5 wherein: a. said support disc mounting ring and inlet mounting ring are secured together by spot welds positioned near the respective outer peripheries thereof.

Claim 9

The assembly as set forth in claim 2 wherein: a. said outlet mounting ring and pressure relief disc and support disc mounting ring are secUred together by spot welds positioned near the respective peripheries thereof.

Claim 10

The disc assembly as set forth in claim 7 wherein: a. said sealing member is retained in aligned position adjacent said relief disc inlet surface by said spot welds.

Claim 11

The disc assembly as set forth in claim 2 wherein: a. said pressure relief disc has a central opening and a plurality of circular openings circumferentially spaced about said central opening, and b. a slit communicating into and extending outwardly from each of said circular openings and terminating on a diameter less than that of said outlet mounting ring diametral opening.