EP0740767B1 - Echangeur de chaleur pour fluide contamine - Google Patents
Echangeur de chaleur pour fluide contamine Download PDFInfo
- Publication number
- EP0740767B1 EP0740767B1 EP95902175A EP95902175A EP0740767B1 EP 0740767 B1 EP0740767 B1 EP 0740767B1 EP 95902175 A EP95902175 A EP 95902175A EP 95902175 A EP95902175 A EP 95902175A EP 0740767 B1 EP0740767 B1 EP 0740767B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- calender
- connector
- bellows
- fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/0236—Header boxes; End plates floating elements
- F28F9/0239—Header boxes; End plates floating elements floating header boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/1607—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0054—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for nuclear applications
Definitions
- the present invention relates to devices heat exchange and especially those intended to cool a hot fluid that has been contaminated with substances radioactive and coming out of a reactor nuclear.
- This type of device consists of a first heat exchanger, generally called heat exchanger intermediate heat, which performs a first exchange of heat, between the hot and contaminated fluid leaving the reactor and a first coolant, and a second heat exchanger which performs a second exchange of heat between the first coolant and a second coolant, the latter being discharged outside.
- One of the main goals of the designers of nuclear power plants is to make the heat exchanger intermediate as mechanically resistant as possible constraints imposed on it, due to differences between deformations of circulation tubes coolant and those of the radiator grille the exchanger, traversed by the hot fluid.
- a bellows and a wall are provided.
- deformable (French patents N ° 712 359 and No. 1286722) in the intermediate heat exchanger, which have the function of absorbing the deformations mentioned above.
- US-A patent No. 3850231 proposes a device having an intermediate heat exchanger in which are provided with two bellows which the hot fluid must cross before you can contaminate the fluid cooling and a means, housed in the defined closed space by the two bellows, the grille and the floating head, to detect leakage of hot fluid through the first bellows.
- French patent FR-A-1286722 and US-A-3850231 actually improve the resistance to mechanical deformation due to expansion by introducing a bellows which collects these deformations.
- sealing against hot contaminated fluid is reduced by the fact that the hot contaminated fluid is in direct contact with the bellows through which it can flee more easily.
- the present invention relates to a device heat exchange which has characteristics of mechanical resistance to deformations due to the gradient of temperatures which are as good as those of the exchangers of the prior art and which, while comprising only one heat exchanger, has sealing characteristics significantly improved, so this exchange device heat, to a single heat exchanger, can be placed in backup circuits of a nuclear reactor for cool the contaminated hot fluid leaving the reactor enclosure by a fluid cooling, directly from the environment outdoor, including in nuclear power plants old ones lacking space to accommodate a device for two exchangers.
- the heat exchanger designed according to the invention includes the features of claim 1.
- the bellows is closer along the axis of the grille of the welded and crimped tubular plate grille as from the top of the floating head.
- the heat exchanger is more waterproof and more mechanically resistant than those of the prior art, and in particular, that those according to FR-A-1286722 and US-A-3850231.
- connection associated with the bellows is the same side of the grille as the fluid inlet fitting hot, in particular, on the same generator of the grille. It follows that the bellows is close to the as immediate as possible from the point of the contact zone hot fluid-tubular plate where the gradient of temperatures is maximum. By placing the bellows as close as possible from this point on the plate, we make sure even greater efficiency of the bellows to collect deformations.
- the sealing and mechanical resistance of the heat exchanger according to the invention allow it to be used in a circuit rescue from an enclosure of a nuclear reactor which, in the in the event of an accident, cools the hot contaminated fluid leaving the enclosure by a cooling fluid directly pourable outside.
- the heat exchanger shown has a grille 1 comprising a bundle of tubes 2 substantially rights for the passage of the coolant.
- This bundle of tubes 2 which is only shown partially, is mounted between tubular plates 3.
- the tubes 2 are welded and crimped over the entire thickness of the tubular plates 3.
- the grille 1 is terminated by a head 4 in which an inlet connection 9 (of outlet) of the coolant.
- a head 5 is mounted floating the radiator grille 1.
- a radiator grille is provided inlet (outlet) connection for hot contaminated fluid.
- a connection 8 for coolant outlet (inlet) is provided on the head 5 mounted floating. Connection 8 is partly consisting of a bellows 10.
- Connection 8 along axis ZZ ', is closer to the tube plate 3 only from the top of the floating head 5.
- bellows 10 collects more quickly the deformations taking place in the area of connection of the tube plate with the grille, area where the temperature gradient is maximum.
- the angle formed in a plane normal to the axis ZZ 'between the projection of the axis XX 'on the plane and the projection of the axis YY' on this same plan sucks.
- the bellows is thus also as close as possible to the area where the gradient of temperature is maximum, which allows it to collect deformations quickly.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
- ZZ', l'axe principal de la calandre 1 cylindrique,
- XX', l'axe du raccord 8 prévu dans la tête flottante,
- YY', l'axe du raccord 7 prévu dans la calandre pour l'écoulement d'entrée (de sortie) du fluide chaud
Claims (3)
- Echangeur de chaleur, destiné à échanger de manière indirecte de la chaleur entre un fluide chaud et contaminé à refroidir et un fluide de refroidissement, comprenant une calandre (1) cylindrique, définissant un récipient, terminée par une tête (4) dans laquelle est ménagée un raccord (9) d'entrée du fluide de refroidissement, une paire de plaques tubulaires (3) montées dans le récipient, l'une étant fixée rigidement à la calandre et l'autre définissant avec un capot de fermeture une tête flottante (5) dans laquelle débouche un raccord (8) de sortie pour le fluide de refroidissement, un faisceau de tubes (2) sensiblement parallèles dont les deux extrémités sont fixées aux plaques tubulaires, un raccord (7) d'entrée dans le récipient du fluide chaud contaminé, ménagé dans la calandre entre les plaques tubulaires, un raccord (6) de sortie du récipient du fluide chaud contaminé, ménagé dans la calandre entre les plaques tubulaires, le raccord (8) d'écoulement du fluide de refroidissement constitué au moins en partie d'un soufflet (10), caractérisé en ce que les tubes (2) formant le faisceau de tubes sont soudés et sertis sur toute l'épaisseur de la plaque tubulaire qui définit avec le capot de fermeture la tête flottante (5) et cette plaque tubulaire est également soudée et sertie à la calandre sur toute sa périphérie.
- Echangeur de chaleur selon la revendication 1, caractérisé en ce que le raccord (8) constitué au moins en partie d'un soufflet (10) est, selon l'axe de la calandre, plus près de la plaque tubulaire qui est soudée et sertie à la calandre que du sommet de la tête flottante.
- Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que le raccord (8) et le raccord (7) sont sur une même génératrice du cylindre.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9306307A FR2705769B1 (fr) | 1993-05-26 | 1993-05-26 | Echangeur de chaleur pour fluide contaminé. |
PCT/FR1994/001375 WO1996017216A1 (fr) | 1993-05-26 | 1994-11-25 | Echangeur de chaleur pour fluide contamine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0740767A1 EP0740767A1 (fr) | 1996-11-06 |
EP0740767B1 true EP0740767B1 (fr) | 2001-02-28 |
Family
ID=26230356
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95902175A Expired - Lifetime EP0740767B1 (fr) | 1993-05-26 | 1994-11-25 | Echangeur de chaleur pour fluide contamine |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0740767B1 (fr) |
BG (1) | BG63057B1 (fr) |
DE (1) | DE69426781D1 (fr) |
FR (1) | FR2705769B1 (fr) |
RU (1) | RU2145697C1 (fr) |
SK (1) | SK91996A3 (fr) |
WO (1) | WO1996017216A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2705769B1 (fr) * | 1993-05-26 | 1995-08-11 | Electricite De France | Echangeur de chaleur pour fluide contaminé. |
EP1189008B1 (fr) * | 2000-09-15 | 2003-11-26 | Toyo Radiator Co., Ltd. | Echangeur de chaleur |
CN109458861B (zh) * | 2018-12-18 | 2023-10-10 | 营口庆营石化设备有限公司 | 一种具有双重密封的浮头换热器 |
RU2725120C1 (ru) * | 2019-09-23 | 2020-06-29 | Общество с ограниченной ответственностью "Полесье" (ООО "Полесье") | Теплообменник |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR712359A (fr) * | 1931-02-28 | 1931-10-01 | Delas Condenseurs | Perfectionnement aux condenseurs à surface et appareils analogues comportant des tubes fixés rigidement à leurs deux extrémités |
FR1286722A (fr) * | 1961-01-20 | 1962-03-09 | Buckley & Taylor Ltd | Perfectionnements aux échangeurs de chaleur, condenseurs et analogues |
US3857442A (en) * | 1971-04-12 | 1974-12-31 | Westinghouse Electric Corp | Heat exchanger having a head with an integral radiation shield |
US3850231A (en) * | 1973-05-24 | 1974-11-26 | Combustion Eng | Lmfbr intermediate heat exchanger |
FR2431346A1 (fr) * | 1978-07-18 | 1980-02-15 | British Nuclear Fuels Ltd | Procede de realisation d'un faisceau tubulaire pour echangeur de chaleur, faisceau tubulaire obtenu et echangeur de chaleur le comportant |
FR2705769B1 (fr) * | 1993-05-26 | 1995-08-11 | Electricite De France | Echangeur de chaleur pour fluide contaminé. |
-
1993
- 1993-05-26 FR FR9306307A patent/FR2705769B1/fr not_active Expired - Lifetime
-
1994
- 1994-11-25 RU RU96116998A patent/RU2145697C1/ru active
- 1994-11-25 DE DE69426781T patent/DE69426781D1/de not_active Expired - Lifetime
- 1994-11-25 WO PCT/FR1994/001375 patent/WO1996017216A1/fr active IP Right Grant
- 1994-11-25 EP EP95902175A patent/EP0740767B1/fr not_active Expired - Lifetime
- 1994-11-25 SK SK919-96A patent/SK91996A3/sk unknown
-
1996
- 1996-07-22 BG BG100732A patent/BG63057B1/bg unknown
Also Published As
Publication number | Publication date |
---|---|
EP0740767A1 (fr) | 1996-11-06 |
DE69426781D1 (de) | 2001-04-05 |
BG100732A (bg) | 1997-03-31 |
BG63057B1 (bg) | 2001-02-28 |
WO1996017216A1 (fr) | 1996-06-06 |
FR2705769B1 (fr) | 1995-08-11 |
SK91996A3 (en) | 1997-10-08 |
FR2705769A1 (fr) | 1994-12-02 |
RU2145697C1 (ru) | 2000-02-20 |
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