EP0740767B1 - Heat exchanger for a contaminated fluid - Google Patents
Heat exchanger for a contaminated fluid 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
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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
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- 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
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- 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.
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- 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
La présente invention concerne les dispositifs d'échange de chaleur et notamment ceux destinés à refroidir un fluide chaud qui a été contaminé par des substances radioactives et qui sort de l'enceinte d'un réacteur nucléaire.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.
Dans les centrales nucléaires, on connaít des dispositifs de refroidissement de fluide chaud et contaminé qui utilisent un échangeur de chaleur intermédiaire.In nuclear power plants, there are known hot and contaminated fluid coolers that use an intermediate heat exchanger.
Ce type de dispositifs est constitué d'un premier échangeur de chaleur, appelé généralement échangeur de chaleur intermédiaire, qui réalise un premier échange de chaleur, entre le fluide chaud et contaminé sortant du réacteur et un premier fluide de refroidissement, et un second échangeur de chaleur qui réalise un second échange de chaleur entre le premier fluide de refroidissement et un second fluide de refroidissement, ce dernier étant déversé à l'extérieur.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.
En utilisant ces dispositifs à échangeur de chaleur intermédiaire, on s'assure une double protection de l'environnement extérieur contre les fuites radioactives. En effet, pour qu'une contamination ait lieu, il faut que les substances radioactives passent au travers de deux parois de séparation d'échange de chaleur (une par échangeur).By using these heat exchanger devices intermediate heat, double protection is ensured the external environment against radioactive leaks. In fact, for contamination to take place, it is necessary that radioactive substances pass through two heat exchange partition walls (one per exchanger).
Comme le fluide de refroidissement et le fluide chaud qui passent dans un échangeur de chaleur ont des températures différentes, celui-ci est souvent soumis à des gradients de température et à des phénomènes thermiques transitoires de grandes amplitudes pendant les périodes d'utilisation normale du réacteur nucléaire et encore plus grandes lorsque survient un accident.Like coolant and fluid hot that pass through a heat exchanger have different temperatures, this one is often subjected to temperature gradients and thermal phenomena large amplitude transients during periods normal use of the nuclear reactor and even more large when an accident occurs.
L'un des buts principaux des concepteurs de centrales nucléaires est de rendre l'échangeur de chaleur intermédiaire aussi résistant mécaniquement que possible aux contraintes qui lui sont imposées, en raison de différences entre les déformations des tubes de circulation du fluide de refroidissement et celles de la calandre de l'échangeur, parcouru par le fluide chaud.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 cet effet, on a prévu un soufflet et une paroi déformable (brevets français N°712 359 et N°1286722) dans l'échangeur de chaleur intermédiaire, qui ont pour fonction d'encaisser les déformations mentionnées ci-dessus. De même le brevet US-A N°3850231 propose un dispositif ayant un échangeur de chaleur intermédiaire dans lequel sont prévus deux soufflets que le fluide chaud doit traverser avant de pouvoir contaminer le fluide de refroidissement et un moyen, logé dans l'espace clos défini par les deux soufflets, la calandre et la tête flottante, pour détecter la fuite du fluide chaud à travers le premier soufflet.For this purpose, 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. Likewise 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.
Le brevet français FR-A-1286722 et le brevet US-A-3850231 permettent effectivement d'améliorer la résistance aux déformations mécaniques dues à la dilatation en introduisant un soufflet qui encaisse ces déformations. Cependant, dans les échangeurs de chaleur selon ces deux brevets, l'étanchéité au fluide chaud contaminé est diminuée du fait que le fluide chaud contaminé est en contact direct avec le soufflet au travers duquel il peut fuir plus facilement.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. However, in heat exchangers according to these two patents, 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.
Certes, selon le brevet US-A-3850231, le fluide chaud doit maintenant traverser deux soufflets, au lieu d'un selon le brevet anglais, avant de contaminer le fluide de refroidissement, mais cela n'empêche qu'en partie la possibilité de contamination du fluide froid. En effet, si le fluide chaud peut fuir à travers le premier soufflet, il en fera de même à travers le second dans un délai plus ou moins bref. Dans le cas d'un fonctionnement normal du réacteur, il faudra, dès détection de la première fuite, arrêter les opérations, entraínant des surcoûts importants, et dans le cas d'un accident de fonctionnement d'un réacteur, la contamination aura lieu dès que le fluide chaud aura traversé le second soufflet.Certainly, according to US-A-3850231, the fluid hot should now go through two bellows, instead according to the English patent, before contaminating the fluid cooling, but that only partly prevents the possibility of contamination of the cold fluid. Indeed, if hot fluid can leak through the first bellows, it will do the same through the second in a more or less time less brief. In the case of normal operation of the reactor, as soon as the first leak is detected, stop operations, resulting in significant additional costs, and in the event of an operating accident of a reactor, contamination will take place as soon as the fluid hot will have passed through the second bellows.
La faible étanchéité de ces échangeurs de chaleur intermédiaire de l'art antérieur ne permet pas de concevoir un dispositif d'échange de chaleur réacteur-extérieur qui ne soit formé que d'un seul échangeur de chaleur.The poor sealing of these heat exchangers intermediary of the prior art does not allow to conceive a reactor-exterior heat exchange device which consist of only one heat exchanger.
La présente invention vise un dispositif d'échange de chaleur qui a des caractéristiques de résistance mécanique aux déformations dues au gradient de température qui sont aussi bonnes que celles des échangeurs de l'art antérieur et qui, tout en ne comportant qu'un seul échangeur de chaleur, a des caractéristiques d'étanchéité nettement améliorées, de sorte que ce dispositif d'échange de chaleur, à un seul échangeur de chaleur, peut être placé dans des circuits de secours d'un réacteur nucléaire pour assurer le refroidissement du fluide chaud contaminé sortant de l'enceinte du réacteur par un fluide de refroidissement, directement issu de l'environnement extérieur, y compris dans les centrales nucléaires anciennes manquant de place pour loger un dispositif à deux échangeurs.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.
L'échangeur de chaleur conçu selon l'invention comprend les caractéristiques de la revendication 1. The heat exchanger designed according to the invention includes the features of claim 1.
Le contact soufflet-fluide chaud qui existait selon les brevets de l'art antérieur et qui constituait un point faible d'étanchéité aux substances radioactives est, dans l'échangeur de chaleur, selon l'invention, supprimé. Il lui a été substitué selon l'invention un contact fluide chaud-plaque sertie et soudée à la calandre nettement plus étanche aux substances radioactives. Cette étanchéité est due au fait que les extrémités des tubes sont soudées et serties à la plaque tubulaire sur toute l'épaisseur de celle-ci et que la plaque tubulaire elle-même est soudée et sertie sur toute la périphérie à la calandre.The hot bellows-fluid contact that existed according to the patents of the prior art and which constituted a weak point of sealing against radioactive substances is, in the heat exchanger, according to the invention, deleted. It was substituted for it according to the invention a fluid contact hot-crimped plate and welded to the grille significantly more impervious to radioactive substances. This seal is due to the fact that the ends of the tubes are welded and crimped to the tube plate over the entire thickness of this and that the tube plate itself is welded and crimped all around the grille.
Ces soudages pouvaient faire craindre que la plaque tubulaire soit très sensible aux contraintes thermiques qui auraient du porter atteinte à l'étanchéité.These welds could raise fears that the tubular plate is very sensitive to stresses which should have affected the seal.
Or, en prévoyant un soufflet pourtant éloigné de l'espace réservé au fluide chaud mais néanmoins suffisamment proche de la plaque tubulaire, on est parvenu à absorber suffisamment les contraintes thermiques pour que la plaque tubulaire soit protégée de leur effet néfaste, en sorte que le soufflet protège la plaque tubulaire des contraintes thermiques, tandis que la plaque tubulaire protège le soufflet du contact avec du fluide chaud.However, by providing a bellows yet far from the space reserved for the hot fluid but nevertheless close enough to the tube plate, we got there to absorb enough thermal stress so that the tubular plate is protected from their harmful effect, in so that the bellows protects the tube plate from thermal stresses, while the tube plate protects the bellows from contact with hot fluid.
Selon un mode de réalisation préféré de l'invention, le soufflet est plus proche selon l'axe de la calandre de la plaque tubulaire soudée et sertie à la calandre que du sommet de la tête flottante. Les déformations dues au gradient de températures étant les plus importantes au niveau du contact de la plaque tubulaire et de la calandre, le fait que le soufflet est au voisinage immédiat de la plaque tubulaire assure que le soufflet encaissera les déformations les plus importantes le plus rapidement possible. Ainsi, selon le mode de réalisation préféré de l'invention, l'échangeur de chaleur est plus étanche et plus résistant mécaniquement que ceux de l'art antérieur, et en particulier, que ceux selon les brevets FR-A-1286722 et US-A-3850231.According to a preferred embodiment of the invention, 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 deformations due to the temperature gradient being the more important in terms of plate contact tubular and radiator grille, the fact that the bellows is immediate vicinity of the tube plate ensures that the bellows will absorb the most important deformations as quickly as possible. So, depending on the mode of preferred embodiment of the invention, 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.
Selon un autre mode de réalisation préféré de l'invention, le raccord associé au soufflet est du même côté de la calandre que le raccord d'entrée du fluide chaud, en particulier, sur la même génératrice de la calandre. Il s'ensuit que le soufflet est à proximité la plus immédiate possible du point de la zone de contact fluide chaud-plaque tubulaire où le gradient de températures est maximal. En plaçant le soufflet aussi près que possible de ce point de la plaque, on s'assure une efficacité encore plus grande du soufflet à encaisser les déformations.According to another preferred embodiment of the invention, the 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.
Ainsi, les caractéristiques d'étanchéité et de résistance mécanique de l'échangeur de chaleur selon l'invention permettent de l'utiliser dans un circuit de secours d'une enceinte d'un réacteur nucléaire qui, dans le cas d'un accident, refroidit le fluide chaud contaminé sortant de l'enceinte par un fluide de refroidissement directement déversable à l'extérieur.Thus, 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.
Dans le cas des dispositifs de l'art antérieur, cela n'est pas possible et ces dispositifs doivent être constitués d'au moins deux échangeurs de chaleur afin d'assurer une étanchéité convenable. L'échangeur de chaleur selon l'invention permet ainsi de diminuer les coûts de fabrication d'une centrale nucléaire ou de rénovation des centrales anciennes.In the case of devices of the prior art, this is not possible and these devices must be consist of at least two heat exchangers so to ensure a suitable seal. The heat exchanger according to the invention thus makes it possible to reduce the costs of manufacture of a nuclear power plant or renovation of old power plants.
A la figure du dessin annexé, donné uniquement à titre d'exemple, est représenté un mode de réalisation d'un échangeur de chaleur selon l'invention.In the figure of the attached drawing, given only to As an example, an embodiment of a heat exchanger according to the invention.
L'échangeur de chaleur représenté comporte une
calandre 1 comportant un faisceau de tubes 2 sensiblement
droits pour le passage du fluide de refroidissement. Ce
faisceau de tubes 2, qui n'est représenté que
partiellement, est monté entre des plaques tubulaires 3.
Les tubes 2 sont soudés et sertis sur toute l'épaisseur des
plaques tubulaires 3. La calandre 1 est terminée par une
tête 4 dans laquelle est prévu un raccord 9 d'entrée (de
sortie) du fluide de refroidissement. Un tête 5 est montée
flottante la calandre 1. Il est prévu sur la calandre un
raccord d'entrée (de sortie) du fluide chaud contaminé. Un
raccord 8 de sortie (d'entrée) du fluide refroidissement
est prévu sur la tête 5 montée flottante. Le raccord 8 est
constitué pour partie d'un soufflet 10.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
On définit :
- 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
- ZZ ', the main axis of the cylindrical grille 1,
- XX ', the axis of the fitting 8 provided in the floating head,
- YY ', the axis of the
fitting 7 provided in the calender for the inlet (outlet) flow of the hot fluid
Le raccord 8, selon l'axe ZZ', est plus près de
la plaque tubulaire 3 que du sommet de la tête flottante 5.Connection 8, along axis ZZ ', is closer to
the tube plate 3 only from the top of the
Il s'ensuit que le soufflet 10 encaisse plus
rapidement les déformations ayant lieu dans la zone de
raccord de la plaque tubulaire avec la calandre, zone où le
gradient de température est maximal.It follows that the
Dans le mode de réalisation préféré, l'angle formé dans un plan normal à l'axe ZZ' entre la projection de l'axe XX' sur le plan et la projection de l'axe YY' sur ce même plan est nul. Le soufflet se trouve ainsi aussi proche que possible de la zone où le gradient de température est maximal, ce qui lui permet d'encaisser rapidement les déformations.In the preferred embodiment, 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.
Claims (3)
- Heat exchanger intended for indirectly exchanging heat between a contaminated hot fluid which is to be cooled and a cooling fluid, comprising a cylindrical calender (1) defining a container, which terminates in a head (4) in which is provided an inlet connector (9) for the cooling fluid, a pair of tube plates (3) mounted in the container, one of which is rigidly fixed to the calender while the other defines, with a closure cap, a floating head (5) into which an outlet connector (8) for the cooling fluid opens, a bundle of substantially parallel tubes (2) the two ends of which are fixed to the tube plates, an inlet connector (7) entering the container containing the contaminated hot fluid, provided in the calender between the tube plates, an outlet connector (6) leaving the container containing the contaminated hot fluid, provided in the calender between the tube plates, the connector (8) for the flow of cooling fluid consisting at least partly of a bellows (10), characterised in that the tubes (2) forming the tube bundle are welded and crimped over the entire length of the tube plate which, with the closure cap, defines the floating head (5) and this tube plate is also welded and crimped to the calender over its entire periphery.
- Heat exchanger according to claim 1, characterised in that, along the axis of the calender, the connector (8) consisting at least partly of a bellows (10) is closer to the tube plate which is welded and crimped to the calender than to the top of the floating head.
- Heat exchanger according to claim 1 or 2, characterised in that the connector (8) and the connector (7) are on the same generatrix of the cylinder.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9306307A FR2705769B1 (en) | 1993-05-26 | 1993-05-26 | Heat exchanger for contaminated fluid. |
| PCT/FR1994/001375 WO1996017216A1 (en) | 1993-05-26 | 1994-11-25 | Heat exchanger for a contaminated fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0740767A1 EP0740767A1 (en) | 1996-11-06 |
| EP0740767B1 true EP0740767B1 (en) | 2001-02-28 |
Family
ID=26230356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95902175A Expired - Lifetime EP0740767B1 (en) | 1993-05-26 | 1994-11-25 | Heat exchanger for a contaminated fluid |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0740767B1 (en) |
| BG (1) | BG63057B1 (en) |
| DE (1) | DE69426781D1 (en) |
| FR (1) | FR2705769B1 (en) |
| RU (1) | RU2145697C1 (en) |
| SK (1) | SK91996A3 (en) |
| WO (1) | WO1996017216A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2705769B1 (en) * | 1993-05-26 | 1995-08-11 | Electricite De France | Heat exchanger for contaminated fluid. |
| DE60006813T2 (en) * | 2000-09-15 | 2004-09-23 | Toyo Radiator Co., Ltd. | heat exchangers |
| CN109458861B (en) * | 2018-12-18 | 2023-10-10 | 营口庆营石化设备有限公司 | Floating head heat exchanger with double sealing |
| RU2725120C1 (en) * | 2019-09-23 | 2020-06-29 | Общество с ограниченной ответственностью "Полесье" (ООО "Полесье") | Heat exchanger |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR712359A (en) * | 1931-02-28 | 1931-10-01 | Delas Condenseurs | Improvement of surface condensers and similar devices comprising tubes rigidly fixed at both ends |
| FR1286722A (en) * | 1961-01-20 | 1962-03-09 | Buckley & Taylor Ltd | Improvements to heat exchangers, condensers and the like |
| 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 (en) * | 1978-07-18 | 1980-02-15 | British Nuclear Fuels Ltd | Tube bundle for heat exchanger - made by welding into tube-plate hole flange formed by machining weld material deposited around tube end, improving corrosion resistance |
| FR2705769B1 (en) * | 1993-05-26 | 1995-08-11 | Electricite De France | Heat exchanger for contaminated fluid. |
-
1993
- 1993-05-26 FR FR9306307A patent/FR2705769B1/en not_active Expired - Lifetime
-
1994
- 1994-11-25 SK SK919-96A patent/SK91996A3/en unknown
- 1994-11-25 EP EP95902175A patent/EP0740767B1/en not_active Expired - Lifetime
- 1994-11-25 RU RU96116998A patent/RU2145697C1/en active
- 1994-11-25 DE DE69426781T patent/DE69426781D1/en not_active Expired - Lifetime
- 1994-11-25 WO PCT/FR1994/001375 patent/WO1996017216A1/en active IP Right Grant
-
1996
- 1996-07-22 BG BG100732A patent/BG63057B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SK91996A3 (en) | 1997-10-08 |
| EP0740767A1 (en) | 1996-11-06 |
| FR2705769A1 (en) | 1994-12-02 |
| WO1996017216A1 (en) | 1996-06-06 |
| BG100732A (en) | 1997-03-31 |
| BG63057B1 (en) | 2001-02-28 |
| RU2145697C1 (en) | 2000-02-20 |
| FR2705769B1 (en) | 1995-08-11 |
| DE69426781D1 (en) | 2001-04-05 |
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