Pressure relief system and method for a refrigerator system
First Claim
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1. An apparatus for relieving excessive pressure from a refrigeration system, comprising:
- a first rupture disk in fluid communication with the refrigeration system;
an actuator coupled to said first rupture disk; and
a second rupture disk having a sealing position and a bypassing position, said second rupture disk being held in said bypassing position by said actuator.
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Abstract
A pressure relief system for a mechanical refrigeration system. The pressure relief system has a pair of rupture disks connected in series to a pressure vessel that contains refrigerant. The pressure relief system allowing the changing of the primary rupture disk while the vessel is pressurized without the loss of overpressure protection.
26 Citations
18 Claims
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1. An apparatus for relieving excessive pressure from a refrigeration system, comprising:
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a first rupture disk in fluid communication with the refrigeration system; an actuator coupled to said first rupture disk; and a second rupture disk having a sealing position and a bypassing position, said second rupture disk being held in said bypassing position by said actuator. - View Dependent Claims (2, 3, 4)
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5. An apparatus, comprising:
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a refrigeration system; a removable primary rupture disk in fluid communication with said refrigeration system; a secondary rupture disk in fluid communication with said primary rupture disk and said refrigeration system, said secondary rupture disk having an open and closed positions; means to hold said secondary rupture disk in said open position; and means to urge said secondary rupture disk to the closed position; wherein said secondary rupture disk is normally in said closed position when said primary rupture disk is removed from said refrigeration system. - View Dependent Claims (6, 7)
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8. An apparatus, comprising:
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a refrigeration system; a passageway in fluid communication with said refrigeration system; a first rupture disk moveable within said passageway between a sealing position and a bypassing position; a removable actuator member for placing said first rupture disk in the bypassing position; and a spring urging said rupture disk to the sealing position. - View Dependent Claims (9, 10, 18)
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11. A method for protecting a pressure vessel of a refrigeration system from over-pressurization, comprising:
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permitting flow of refrigerant in a passageway arround a backup rupture disk, the passageway being in fluid communication with the pressure vessel; sealing the passageway with a primary rupture disk removing the primary rupture disk; and sealing the passageway upon completion of said removing with the backup rupture disk. - View Dependent Claims (12)
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13. A method for protecting a pressure vessel of a refrigeration system, comprising:
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sealing a passageway with a primary rupture disk, the passageway being in fluid communication with the pressure vessel; coupling the primary rupture disk to a backup rupture disk; holding open the backup rupture disk by the primary rupture disk; and sealing the passageway with the backup rupture disk by removing the primary rupture disk. - View Dependent Claims (14)
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15. A method for protecting a pressure vessel of a refrigeration system, comprising:
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blocking the flow of refrigerant from an aperture with a first rupture disk, the aperture being in fluid communication with the pressure vessel; placing a second rupture disc in fluid communication with the aperture, the second rupture disk being downstream of the aperture and upstream of the finest rupture disk; bypassing the second rupture disk when the first rupture disk is installed; and locating a pressure relief valve in fluid communication with the first rupture disk. - View Dependent Claims (16, 17)
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Specification