Rupture disk apparatus and methods
First Claim
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1. A method of producing a rupture disk, the method comprising the steps of:
- forming a rupturable member of malleable material having a pressurized fluid inlet side and an outlet side and adapted to be sealingly engaged in a pressurized fluid passageway; and
forming an area of material displaced by a partial shearing motion to form an area of weakness along which said rupture disk ruptures, said displacement of material causing a thinning in the cross section of the weakened area.
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Abstract
The present invention provides an improved rupture disk apparatus and manufacturing method. The apparatus includes a rupture disk having at least one area of weakness formed by the displacement of material through a partial shearing motion. The weakened area is capable of withstanding pressure cycling because the rupture disk flange acts to support the weakened area during use. The apparatus further includes a safety member adjacent to the rupture disk on the outlet side to ensure opening, the safety member having at least one rupture-initiating, stress-concentrating point positioned to contact the rupture disk weakened area.
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Citations
9 Claims
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1. A method of producing a rupture disk, the method comprising the steps of:
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forming a rupturable member of malleable material having a pressurized fluid inlet side and an outlet side and adapted to be sealingly engaged in a pressurized fluid passageway; and forming an area of material displaced by a partial shearing motion to form an area of weakness along which said rupture disk ruptures, said displacement of material causing a thinning in the cross section of the weakened area. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of producing a rupture disk having an area of weakness to facilitate opening of the disk, the rupture disk being disposed in a fluid passageway to thereby create an inlet and an outlet side, the method comprising the steps of:
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forming a rupturable member for opening at a predetermined pressure and a flange for holding the rupturable member in the fluid passageway; displacing material to offset the flange from the rupturable member such that a portion of a peripheral edge of the rupturable member and a portion of an inner peripheral edge of the flange are exposed, to thereby form a weakened area at the juncture of the rupturable member and the flange, the weakened area having a thickness less than the thickness of the flange and rupturable member. - View Dependent Claims (8, 9)
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Specification