US4035232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure system
Assignee: General Atomics Corp
•
Filing: 1974-08-09
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Granted: 1977-07-12
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Expires: 1994-08-09
Abstract
Abstract A gas-cooled nuclear reactor system is described having a pressure vessel with a penetration therein for accommodating a heat exchanger. A closure system is used in which a restrainer ring is positioned between a tube sheet and the interior of the pressure vessel to restrain movement of the tube sheet toward the interior of the pressure vessel.
Inventors
- 👤 Leonard J. Kube
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:36
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/02; F28F9/0219; G; G21; G21C; G21C13/00; G21C13/02; G21C13/028; G21C9/00; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
In a gas-cooled nuclear reactor system having a pressure vessel with a metal-lined penetration therein for accommodating a heat exchanger, a closure system comprising, a tube sheet mounted transversely of the penetration aligned on the axis thereof for passing heat exchange fluid to the heat exchanger, a thermal sleeve extending from said tube sheet coaxial with the penetration, means for mounting said thermal sleeve to the pressure vessel, a failure protection cylinder and means for mounting same coaxial with said thermal sleeve between said thermal sleeve and the lining of the penetration, a restrainer ring defining an opening of lesser size than the periphery of said tube sheet, said restrainer ring being mounted to said failure protection cylinder in the penetration aligned on the axis thereof between said tube sheet and the interior of the pressure vessel to restrain movement of said tube sheet toward the interior of the pressure vessel.
Claim 2
Dependent Claim
151 words
In a gas-cooled nuclear reactor system having a pressure vessel with a metal-lined penetration therein for accommodating a heat exchanger, a closure system comprising, a tube sheet mounted transversely of the penetration aligned on the axis thereof for passing heat exchange fluid to the heat exchanger, a thermal sleeve extending from said tube sheet coaxial with the penetration, means for mounting said thermal sleeve to the pressure vessel, a failure protection cylinder and means for mounting same coaxial with said thermal sleeve between said thermal sleeve and the lining of the penetration, a restrainer ring defining an opening of lesser size than the periphery of said tube sheet, said restrainer ring being mounted to said failure protection cylinder in the penetration aligned on the axis thereof between said tube sheet and the interior of the pressure vessel to restrain movement of said tube sheet toward the interior of the pressure vessel.
Claim 3
Dependent Claim
28 words
A closure system according to claim 1 wherein said failure protection cylinder mounting means are located proximate the end of said failure protection cylinder opposite said restrainer ring.
Claim 4
Dependent Claim
26 words
A closure system according to claim 1 wherein said thermal sleeve mounting means are located toward the end of said thermal sleeve opposite said tube sheet.
Claim 5
Dependent Claim
20 words
A closure system according to claim 1 including flow restriction means between said failure protection cylinder and said thermal sleeve.
Claim 6
Dependent Claim
151 words
In a gas-cooled nuclear reactor system, having a pressure vessel with a metal-lined penetration therein for accommodating a heat exchanger, a closure system comprising, a substantially circular tube sheet mounted transversely of the penetration aligned on the axis thereof for passing heat exchange fluid to the heat exchanger, a thermal sleeve extending from said tube sheet coaxially with the penetration, means for mounting said thermal sleeve to the pressure vessel, a failure protection cylinder and means for mounting same coaxial with said thermal sleeve between said thermal sleeve and the liner of the penetration, said failure protection cylinder having an annular shoulder projecting radially inward therefrom adjacent said tube sheet on the side thereof toward the interior of the pressure vessel to form an opening of lesser diameter than the outer diameter of said tube sheet to provide a step between said tube sheet and the interior of the pressure vessel.
Claim 7
Dependent Claim
151 words
In a gas-cooled nuclear reactor system, having a pressure vessel with a metal-lined penetration therein for accommodating a heat exchanger, a closure system comprising, a substantially circular tube sheet mounted transversely of the penetration aligned on the axis thereof for passing heat exchange fluid to the heat exchanger, a thermal sleeve extending from said tube sheet coaxially with the penetration, means for mounting said thermal sleeve to the pressure vessel, a failure protection cylinder and means for mounting same coaxial with said thermal sleeve between said thermal sleeve and the liner of the penetration, said failure protection cylinder having an annular shoulder projecting radially inward therefrom adjacent said tube sheet on the side thereof toward the interior of the pressure vessel to form an opening of lesser diameter than the outer diameter of said tube sheet to provide a step between said tube sheet and the interior of the pressure vessel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |