Rupture disk assembly
First Claim
1. An apparatus for indenting a rupture disk including an annular flange and a rupturable portion having a domed shape, comprising:
- a first member having an opening, the first member configured to engage a first side of the rupturable portion; and
a second member disposed on a second side of the rupturable portion and aligned with the opening in the first member, the second member operable to engage the rupturable portion at or near the apex of the domed shape and to displace a section of the rupturable portion relative to the first member, thereby creating an indentation in the rupturable portion at or near the apex of the domed shape, wherein the rupturable portion will initiate reversal at the indentation when the rupture disk is subject to a predetermined pressure differential.
1 Assignment
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Accused Products
Abstract
An improved rupture disk assembly and methods and apparatuses for forming a rupture disk are disclosed. The rupture disk assembly includes a rupture disk having a flange connected to a dome-shaped rupturable portion by a transition area. The rupturable portion includes a structural apex formation at or near the apex of the dome and is configured to rupture when exposed to a fluid having a predetermined pressure. Preferably, a safety member is disposed adjacent the rupture disk. The safety member includes a hinge about which the disk bends when the disk ruptures. The present invention is also directed to an apparatus and method for consistently, accurately, and repeatably forming a structural apex formation in a rupture disk before the formation of to the rupture disk dome, during the formation of the rupture disk dome, and after the formation of the rupture disk dome.
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Citations
26 Claims
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1. An apparatus for indenting a rupture disk including an annular flange and a rupturable portion having a domed shape, comprising:
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a first member having an opening, the first member configured to engage a first side of the rupturable portion; and
a second member disposed on a second side of the rupturable portion and aligned with the opening in the first member, the second member operable to engage the rupturable portion at or near the apex of the domed shape and to displace a section of the rupturable portion relative to the first member, thereby creating an indentation in the rupturable portion at or near the apex of the domed shape, wherein the rupturable portion will initiate reversal at the indentation when the rupture disk is subject to a predetermined pressure differential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of forming an indentation in a rupture disk including an annular flange and a rupturable portion having a domed shape, comprising the steps of:
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supporting a first side of the rupturable portion with a first member having an opening; and
engaging a second member aligned with the opening in the first member with a second side of the rupturable portion at or near the apex of the domed shape to displace a section of the rupturable portion relative to the first member, thereby creating an indentation at or near the apex of the rupturable portion of the rupture disk, wherein the rupturable portion will initiate reversal at the indentation when the rupture disk is subject to a predetermined pressure differential. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of forming a rupture disk, comprising the steps of:
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providing a mold having a concave recess and a punch projecting into the concave recess;
providing a stamp having a convex shape and an opening configured to align with the punch;
disposing a rupture disk blank between the mold and the stamp;
engaging the stamp with the rupture disk blank to displace a portion of the rupture disk blank into the concave recess of the mold to form the portion of the rupture disk blank into a domed shape; and
engaging the punch with the portion of the rupture disk blank as the stamp displaces the portion of the rupture disk blank into the concave recess of the mold to form an indentation in the domed shape at or near the apex of the dome. - View Dependent Claims (22, 23)
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24. A method of forming a rupture disk, comprising the steps of:
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providing a rupture disk blank;
disposing a mold adjacent a first side of the rupture disk blank, the mold having a concave recess and a punch projecting into the concave recess;
engaging a stamp with a second side of the rupture disk blank, the stamp having a convex shape and an opening configured to align with the punch, the engagement of the stamp with the rupture disk blank displacing a portion of the rupture disk blank into the concave recess of the mold to form the portion of the rupture disk blank into a domed shape and engaging a punch with the portion of the rupture disk blank as the stamp displaces the portion of the rupture disk blank into the concave recess of the mold to form an indentation in the domed shape at or near the apex of the dome. - View Dependent Claims (25, 26)
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Specification