Patent JPS6417093A successfully refreshed from Google Patents.
US4377552A
Expired / Lapsed
US
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Nuclear reactor exchanger
Assignee: Areva NP SAS
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Filing: 1979-12-06
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Granted: 1983-03-22
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Expires: 1999-12-06
Abstract
Abstract Nuclear reactor exchanger which assures the transfer of heat between two streams of coolant sodium. It includes an outlet connector which channels coolant sodium leaving a bundle of exchanger tubes traversed on the inside by the sodium and immersed externally in coolant sodium, and an inner tubular jacket forming a surface of revolution about a vertical axis and an outer tubular jacket. The wall of the inner jacket has a folded portion distinguished by at least one flank in the form of a crown.
Inventors
- 👤 Philippe Doublet
- 👤 Georges Jullien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:33
CPC Classifications
F; F28; F28D; F28D7/00; F28D7/16; F28D7/163; F28D7/1669; F28D1/00; F28D1/02; F28D1/0206; F28D1/0213; F28D21/00; F28D2021/0019; F28D2021/0054; F28F; F28F2265/00; F28F2265/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A heat exchanger for a fast neutron reactor, comprising (a) a bundle of tubes fixed at their ends to upper and lower tube plates each having the form of crown, said tubes being located between outer and inner sleeves for channeling a stream of primary sodium circulating around said tubes; (b) an inlet tube passing inside said inner sleeve for leading a stream of secondary sodium to the inlets of said tubes, so that said secondary sodium circulates within said tubes; (c) an inner tubular jacket surrounding the said inlet tube and an outer tubular jacket connected together at the top so as to form an annular chamber which channels said secondary sodium at the outlets from said tubes, said inner tubular jacket having a folded portion comprising at least one flank and forming at least one annular throat.
Claim 2
Dependent Claim
139 words
A heat exchanger for a fast neutron reactor, comprising (a) a bundle of tubes fixed at their ends to upper and lower tube plates each having the form of crown, said tubes being located between outer and inner sleeves for channeling a stream of primary sodium circulating around said tubes; (b) an inlet tube passing inside said inner sleeve for leading a stream of secondary sodium to the inlets of said tubes, so that said secondary sodium circulates within said tubes; (c) an inner tubular jacket surrounding the said inlet tube and an outer tubular jacket connected together at the top so as to form an annular chamber which channels said secondary sodium at the outlets from said tubes, said inner tubular jacket having a folded portion comprising at least one flank and forming at least one annular throat.
Claim 3
Dependent Claim
30 words
A heat exchanger according to claim 1, wherein the wall of said folded portion of said inner tubular jacket has a thickness in the range of 10 to 30 mm.
Claim 4
Dependent Claim
35 words
A heat exchanger according to claim 1 or 2, wherein said folded portion is connected towards its underside to a substantially frusto-conical sleeve which widens upwardly and is in turn connected to a cylindrical portion.
Claim 5
Dependent Claim
20 words
A heat exchanger according to claim 1 or 2, wherein said folded portion is located close to said tube bundle.
Claim 6
Dependent Claim
25 words
A heat exchanger according to claim 1 or 2, wherein said folded portion is located close to the top portion of said inner tubular jacket.
References Cited (Backward Citations)
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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) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |