US4311189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1980-02-06
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Granted: 1982-01-19
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Expires: 2000-02-06
Abstract
Abstract Exchanger which incorporates a casing in which the heat carried by a primary fluid is transferred to a secondary fluid so as to heat the latter, the secondary fluid circulating in the tubes, whose opposite ends issue into tubular supply and discharge mains located externally of the exchanger casing and surrounding the latter at least partly, wherein each of the tubes comprises two access devices each sealed by a removable plug, while each of the access devices is located in a part of the tube positioned between the exchanger casing and the corresponding main. The present exchanger is intended more particularly for the transfer of heat between two circuits of a nuclear power station.
Inventors
- 👤 Marcel Robin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:40
CPC Classifications
F; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/12; F22B37/125; F22B1/00; F22B1/02; F22B1/06; F22B1/063; F22B37/22; F22B37/221; F22B37/38; F22B37/42; F22B37/421; F22B37/62; F22B37/70; F22B37/74; F28; F28F; F28F27/00; Y; Y10; Y10S; Y10S165/00; Y10S165/001; Y10S165/006
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
An exchanger which incorporates a casing in which the heat carried by a primary fluid is transferred to a secondary fluid so as to heat the latter, the secondary fluid circulating in tubes whose opposite ends issue into tubular supply and discharge mains located externally of the exchanger casing and surrounding the latter at least partly, wherein each of the tubes comprises two access devices each sealed by a removable plug, whilst each of the access devices is located in a part of the tube positioned between the exchanger casing and the corresponding main.
Claim 2
Dependent Claim
94 words
An exchanger which incorporates a casing in which the heat carried by a primary fluid is transferred to a secondary fluid so as to heat the latter, the secondary fluid circulating in tubes whose opposite ends issue into tubular supply and discharge mains located externally of the exchanger casing and surrounding the latter at least partly, wherein each of the tubes comprises two access devices each sealed by a removable plug, whilst each of the access devices is located in a part of the tube positioned between the exchanger casing and the corresponding main.
Claim 3
Dependent Claim
43 words
An exchanger according to claim 1, wherein each of the parts of the tubes has a first linear portion terminated by the access device and a second portion forming a T with the linear portion and connecting the latter to the corresponding main.
Claim 4
Dependent Claim
28 words
An exchanger according to claim 2, wherein the linear portion of each of the tube parts extends in a direction which is substantially perpendicular to the exchanger casing.
Claim 5
Dependent Claim
31 words
An exchanger according to claim 2, wherein the second portion of each of the said tube parts is connected to the linear portion in the vicinity of the corresponding access device.
Claim 6
Dependent Claim
86 words
An exchanger according to claim 4, wherein the plugs sealing the access device located in the part of each of the tubes located between the exchanger casing and the supply main carries a tubular member extending into the linear portion of that part of the tubes beyond the connection of the second portion of said part of the tubes, the tubular member being laterally perforated level with the second portion and supports a diaphragm or a device which creates an identical pressure drop beyond the latter.
Claim 7
Dependent Claim
21 words
An exchanger according to claim 2, wherein the second portion of each of the said tube parts forms an expansion bend.
Claim 8
Dependent Claim
80 words
An exchanger according to claim 2, wherein the linear portion of each of the said tube parts is surrounded by an anti-torsion device, whose one end is fixed to the exchanger casing and whose other end has for example at least one longitudinal recess which is penetrated by a finger integral with the linear portion in the vicinity of the access device, the anti-torsion device also having a longitudinal slot which traverses the second portion of the corresponding tube parts.
Claim 9
Dependent Claim
44 words
An exchanger according to claim 1, wherein each of the said parts of the tubes comprises a threaded portion surrounding the access device, onto which is screwed a nut by means of which the corresponding plug is normally sealingly brought against the access device.
Claim 10
Dependent Claim
22 words
An exchanger according to claim 1, wherein at least one of the plugs sealing the access devices carries a temperature measuring device.
Claim 11
Dependent Claim
21 words
An exchanger according to claim 1, wherein at least one the plugs sealing the access devices carries a sealing control device.
Claim 12
Dependent Claim
33 words
An exchanger according to claim 1, wherein the exchanger casing and the mains are enveloped at least partly in a thermal insulation and the access devices are positioned outside the said thermal insulation.
References Cited (Backward Citations)
US2110024A
Cited
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Cited
FR1352958A
Cited
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Cited
FR2112007B1
Cited
US3941187A
Cited
FR2149983A5
Cited
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Cited
FR2379881A1
Cited
US4216821A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-18 | 1985-07-20 | 1986-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-18 | 1989-07-20 | 1990-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-18 | 1993-07-20 | 1994-01-19 | $7700.00 | Window Closed / Lapsed |