EP1363083B1 - Double tube heat exchanger, having reinforced contact - Google Patents

Double tube heat exchanger, having reinforced contact Download PDF

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Publication number
EP1363083B1
EP1363083B1 EP20030291109 EP03291109A EP1363083B1 EP 1363083 B1 EP1363083 B1 EP 1363083B1 EP 20030291109 EP20030291109 EP 20030291109 EP 03291109 A EP03291109 A EP 03291109A EP 1363083 B1 EP1363083 B1 EP 1363083B1
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EP
European Patent Office
Prior art keywords
ring
outer tube
tubes
tube
conical wall
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EP20030291109
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German (de)
French (fr)
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EP1363083A1 (en
Inventor
Jean-Michel Couyade
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Electricite de France SA
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Electricite de France SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F24H1/105—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance formed by the tube through which the fluid flows

Definitions

  • the invention relates to the arrangements of an electric heater of the heat exchange type between a fluid and a tube in which the fluid circulates.
  • the invention relates more specifically to such arrangements when the heat exchange is performed in an annular space separating two concentric tubes.
  • Such a device is known from GB-A-980454.
  • a fluid heat exchange assembly comprising two tubes including an outer tube which surrounds an inner tube, forming between them a fluid circulation space, means for electrical connection between these two tubes. so that a connection of the assembly to an electrical source generates a heating of the two tubes by joule effect, characterized in that the electrical connecting means between the two tubes comprise a conical wall and a ring each mounted integral with a different tube of the inner and outer tubes, the ring being supported around the conical wall so that a given differential expansion of the two tubes generates an increase in the support of the conical wall in the ring.
  • Such a device also allows automatic mechanical centering of the concentric tubes.
  • the present two-tube heat exchange device consists mainly of two sets 100 and 200, one 100 based on the outer tube 110, the other 200 based on the inner tube 210.
  • these two assemblies 100 and 200 rest against one another without play. However, during a differential expansion between the outer tube 110 and the inner tube 210, a slight sliding is allowed between these two sets. at the ends of the tubes.
  • the inner tube 210 is extended at each of its ends by a frustoconical wall 220 (which may be a complete nozzle or a truncated wall).
  • the outer tube 110 is itself equipped at its ends with a counter-flange 115 which removably receives a flange 130.
  • the flange 130 forms, in its central zone, a ring 135.
  • the frustoconical wall 220 is introduced into the ring 135 sufficiently to ensure the support without play.
  • the inner tube 210 becomes typically expands more strongly than the outer tube 110, the frustoconical wall 220 penetrates further into the ring 135, thus generating a more intense frustoconical ring / wall support.
  • This support is therefore provided both in low temperature and high temperature.
  • Such reinforced support is used for the circulation of an electric heating current, provided by simple connection to a source from outside the device.
  • the outer tube 110 is provided at its end with a flat annular collar (or counter-flange) 115 to which it is fixed by welding on its entire periphery.
  • This counter-flange 115 also forms a point of contact between the device and a conductive connection connected to an electrical source. More specifically, an electrical connection is maintained by clamping, clamping or welding on this counter-flange 115 by means of the head of a screw passing through the counter-flange.
  • the counter-flange 115 is here traversed in total by screws distributed around its periphery, the main role of which is to maintain, bearing on this counter-flange 115, a second element 130 also forming a solid and flat annular portion 132, and carrying in its center the contact ring 135.
  • This element 130 hereinafter referred to as a flange (loose flange), is shown in front view in FIG. 2. It has an interior zone with several lumens 134 at the center of which is the ring 135. More specifically, the ring 135 is connected to the solid and flat annular portion 132 of this flange by three radial sections 136 between which are formed three corresponding lights 134.
  • These three profiles 136 are distributed at 120 ° to one another, separating the lights 134 which extend around the ring 135.
  • the lights 134 extend in an arc around the ring 135 on a ring. width, measured radially, which corresponds to the diameter of the inner section of the outer tube 110.
  • the lights 134 extend the space between the two tubes.
  • the full annular portion of this flange 130 covers the counter-flange 115 welded to the outer tube 110, and the ring 135 is clamped around the wall or conical end 220 carried by the inner tube 210.
  • the liquid to be heated passes through the flange 130 circulating in its lights 134.
  • the profiles 136 are thin enough to allow radial deformation of the ring 135 under the effect of penetration of the conical wall 220. In other words, the profiles 136 are compressed or extend according to the spacing imposed on the ring 135, without the neck 132 of the flange 130 is opposed by its rigidity.
  • the initial installation of the flange 130 is done by clamping it against the counter-flange or neck 115 of the outer tube, generating a progressive bearing of the ring 135 on the conical wall 220.
  • This clamping is done here cold, sufficient clamping to ensure electrical contact between the two tubes 110 and 210.
  • the ring 135 is here chosen conical inner surface, inclined equal to that of the conical wall 220 carried by the inner tube 210. Thus the surface contact is of optimal extent.
  • the conical wall is here closed so that it forms a plug of the inner tube 210.
  • the assembly is assembled mechanically in a cold fit by screws or any other technique.
  • the set is removable tube by tube.
  • the inner tube 210 expands a little more than the outer tube 110, a mechanical clamping at the ring 135 is naturally reinforced on all of this conical contact surface.
  • a current, applied on the counter-flanges 115 situated at the two ends of the device, does not circulate only in the wall of the outer tube 110. It also circulates by contact of the counter-flange 115 with the flange 130, then from the contour of the flange 130 to the ring 135 via the profiles 136, the ring 135 to the inner tube 210 through the conical support, then into the inner tube 210.
  • the current return is done according to the same path, at the other end of the device.
  • the flange 130 comprising the conical ring 135 can have different shapes, for example round, oval, square, rectangular. It can be secured by welding, brazing or mechanical assembly removable to other mechanical structures such as electrical shunt, electrical terminal, flange, piping. It ensures electrical continuity by preferably removable contact between two concentric parts.
  • This flange 130 is constructed of all types of electrically conductive materials. It can have on its structure or in its structure metal parts removable or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.
  • the profiles 136 supporting the ring 135 and allowing electrical continuity are made of all types of electrically conductive materials. They may have on their structure or in their structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold. They are either machined in the room, welded, brazed on the piece or mechanically tightened by any technique. These profiles are not limited in number, size and geometry.
  • the ring 135, allowing the electrical continuity between the flange 130 and the concentric piece 210 can have different shapes, for example, round, oval, square, rectangular, and is made of all types of electrically conductive materials. It can have on its structure or in its structure metal parts removable or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.
  • the inner contact faces are preferably geometrically identical to the faces of the frustoconical tip 220 of the inner tube 210.
  • the ring 135 is either machined in the workpiece, or welded, brazed to the workpiece or mechanically clamped by any technique whatsoever. It is not limited in size.
  • the tip 220 of the inner tube 210 may have different shapes, for example, conical, truncated conical, conical off-center and is made of any type of electrically conductive material.
  • the tip 220 may comprise on its structure or in its structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold. It is either machined in the workpiece, welded, brazed on the workpiece, or mechanically tightened by any technique.
  • the tip 220 is not limited in size.
  • the counter-flange 115 can have different shapes, for example round, oval, square, rectangular. It is preferably welded to the outer tube 110 and is made of any type of conductive material. It may comprise on its structure or in its structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.
  • the conical wall (220) or the ring (135) is carried by the inner tube (210) and the other of these two elements (220, 135) is carried by a mounted part ( 130) releasable on the outer tube (110).
  • the element forming the ring (135) near its center carries fastening means at its periphery (132), which are adapted to cooperate with means (115) located at the periphery of the outer tube (110). .
  • fastening means of the element (130) carrying the ring (135) are preferably releasable type.
  • the fastening means of the element (130) carrying the ring (135) are for example constituted by another neck (132) and means able to hold this other neck (132) on the neck (115) of the outer tube ( 110).

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Resistance Heating (AREA)

Description

L'invention concerne les aménagements de réchauffeur électrique du type à échange thermique entre un fluide et un tube dans lesquels le fluide circule. L'invention concerne plus précisément de tels aménagements lorsque l'échange thermique est réalisé dans un espace annulaire séparant deux tubes concentriques. Un tel dispositif est connu par le brevet GB-A- 980454.The invention relates to the arrangements of an electric heater of the heat exchange type between a fluid and a tube in which the fluid circulates. The invention relates more specifically to such arrangements when the heat exchange is performed in an annular space separating two concentric tubes. Such a device is known from GB-A-980454.

Ces derniers aménagements, s'ils permettent une meilleure compacité et une plus grande surface d'échange, nécessitent toutefois l'application d'un courant électrique sur le tube extérieur et en même temps sur le tube intérieur, pour obtenir un effet joule sur l'ensemble. Or une telle mise sous tension de l'ensemble est fastidieuse.These last arrangements, if they allow a better compactness and a larger exchange surface, however require the application of an electric current on the outer tube and at the same time on the inner tube, to obtain a joule effect on the 'together. However, such a power up of the assembly is tedious.

Il est notamment difficile d'obtenir un raccordement électrique du tube intérieur qui soit stable, aussi bien en basse qu'en haute température, tout en laissant libre la circulation du fluide au sein de l'espace annulaire. Un autre problème à résoudre est d'obtenir une bonne répartition des courants entre le tube extérieur et le tube intérieur, par des contacts électriques francs et robustes.It is particularly difficult to obtain an electrical connection of the inner tube that is stable, both low and high temperature, while leaving free circulation of fluid within the annular space. Another problem to be solved is to obtain a good distribution of the currents between the outer tube and the inner tube, by solid and robust electrical contacts.

On souhaite aussi permettre un démontage tube par tube (intérieur et extérieur) sans complexité mécanique, tout en maintenant une fiabilité mécanique et électrique malgré des phases de démontage/remontage, en veillant à respecter un critère de faible coût, et sans générer des zones de rétention de fluide trop importantes.It is also desired to allow tube-by-tube disassembly (inside and outside) without mechanical complexity, while maintaining mechanical and electrical reliability despite disassembly / reassembly phases, while respecting a low cost criterion, and without generating zones of too much fluid retention.

Ces buts sont atteints selon l'invention grâce à un ensemble d'échange thermique pour fluide comportant deux tubes dont un tube extérieur qui entoure un tube intérieur, formant entre eux un espace de circulation de fluide, des moyens de raccordement électrique entre ces deux tubes de sorte qu'un raccordement de l'ensemble à une source électrique génère un réchauffement des deux tubes par effet joule, caractérisé en ce que les moyens de raccordement électriques entre les deux tubes comprennent une paroi conique et une bague montées chacune solidaire d'un tube différent parmi les tubes intérieur et extérieur, la bague étant en appui autour de la paroi conique de sorte qu'une dilatation différentielle donnée des deux tubes génère un accroissement de la mise en appui de la paroi conique dans la bague.These objects are achieved according to the invention by means of a fluid heat exchange assembly comprising two tubes including an outer tube which surrounds an inner tube, forming between them a fluid circulation space, means for electrical connection between these two tubes. so that a connection of the assembly to an electrical source generates a heating of the two tubes by joule effect, characterized in that the electrical connecting means between the two tubes comprise a conical wall and a ring each mounted integral with a different tube of the inner and outer tubes, the ring being supported around the conical wall so that a given differential expansion of the two tubes generates an increase in the support of the conical wall in the ring.

Un tel dispositif permet également un centrage mécanique de manière automatique des tubes concentriques.Such a device also allows automatic mechanical centering of the concentric tubes.

D'autres caractéristiques, buts et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre, faite en référence aux figures annexées sur lesquelles :

  • la figure 1 représente un dispositif selon l'invention en coupe longitudinale ;
  • la figure 2 représente, en vue de face, un élément formant bride pour le dispositif de la figure 1.
Other characteristics, objects and advantages of the invention will appear on reading the detailed description which follows, made with reference to the appended figures in which:
  • Figure 1 shows a device according to the invention in longitudinal section;
  • FIG. 2 represents, in front view, a flange element for the device of FIG. 1.

Le présent dispositif d'échanges thermiques à deux tubes se compose principalement de deux ensembles 100 et 200, l'un 100 basé sur le tube extérieur 110, l'autre 200 basé sur le tube intérieur 210.The present two-tube heat exchange device consists mainly of two sets 100 and 200, one 100 based on the outer tube 110, the other 200 based on the inner tube 210.

En fonctionnement, ces deux ensembles 100 et 200 sont en appui l'un sur l'autre sans jeu. Toutefois, lors d'une dilatation différentielle entre le tube extérieur 110 et le tube intérieur 210, un léger coulissement est autorisé entre ces deux ensembles au niveau des extrémités des tubes.In operation, these two assemblies 100 and 200 rest against one another without play. However, during a differential expansion between the outer tube 110 and the inner tube 210, a slight sliding is allowed between these two sets. at the ends of the tubes.

Le tube intérieur 210 se prolonge à chacune de ses extrémités par une paroi tronconique 220 (qui peut être un embout complet ou une paroi tronquée). Le tube extérieur 110 est, lui, équipé à ses extrémités d'une contre-bride 115 qui reçoit, de manière amovible, une bride 130. La bride 130 forme, dans sa zone centrale, une bague 135.The inner tube 210 is extended at each of its ends by a frustoconical wall 220 (which may be a complete nozzle or a truncated wall). The outer tube 110 is itself equipped at its ends with a counter-flange 115 which removably receives a flange 130. The flange 130 forms, in its central zone, a ring 135.

La paroi tronconique 220 est introduite dans la bague 135 suffisamment pour assurer l'appui sans jeu. Lorsque le tube intérieur 210 se dilate typiquement de manière plus forte que le tube extérieur 110, la paroi tronconique 220 pénètre plus avant dans la bague 135, générant ainsi un appui bague/paroi tronconique plus intense.The frustoconical wall 220 is introduced into the ring 135 sufficiently to ensure the support without play. When the inner tube 210 becomes typically expands more strongly than the outer tube 110, the frustoconical wall 220 penetrates further into the ring 135, thus generating a more intense frustoconical ring / wall support.

Cet appui est donc assuré aussi bien en basse température qu'en haute température. Un tel appui renforcé est mis à profit pour la circulation d'un courant électrique de chauffage, fourni par simple raccordement à une source par l'extérieur du dispositif.This support is therefore provided both in low temperature and high temperature. Such reinforced support is used for the circulation of an electric heating current, provided by simple connection to a source from outside the device.

Ainsi, le tube extérieur 110 est muni, à son extrémité, d'une collerette annulaire plane (ou contre-bride) 115 à laquelle il est fixé par soudage sur l'ensemble de sa périphérie. Cette contre-bride 115 forme également point de contact entre le dispositif et une liaison conductrice reliée à une source électrique. Plus précisément, une liaison électrique est maintenue par pincement, serrage ou soudure, sur cette contre-bride 115 à l'aide de la tête d'une vis traversant la contre-bride.Thus, the outer tube 110 is provided at its end with a flat annular collar (or counter-flange) 115 to which it is fixed by welding on its entire periphery. This counter-flange 115 also forms a point of contact between the device and a conductive connection connected to an electrical source. More specifically, an electrical connection is maintained by clamping, clamping or welding on this counter-flange 115 by means of the head of a screw passing through the counter-flange.

La contre-bride 115 est ici traversée au total par des vis réparties sur son pourtour, dont le rôle principal est de maintenir, en appui sur cette contre-bride 115, un second élément 130 formant également une partie annulaire pleine et plate 132, et portant en son centre la bague 135 de mise en contact.The counter-flange 115 is here traversed in total by screws distributed around its periphery, the main role of which is to maintain, bearing on this counter-flange 115, a second element 130 also forming a solid and flat annular portion 132, and carrying in its center the contact ring 135.

Cet élément 130, ci-après appelé bride (bride folle), est représenté en vue de face à la figure 2. Il présente une zone intérieure à plusieurs lumières 134 au centre desquelles se trouve la bague 135. Plus précisément, la bague 135 est reliée à la partie annulaire pleine et plate 132 de cette bride par trois profilés radiaux 136 entre lesquels sont formées trois lumières 134 correspondantes.This element 130, hereinafter referred to as a flange (loose flange), is shown in front view in FIG. 2. It has an interior zone with several lumens 134 at the center of which is the ring 135. More specifically, the ring 135 is connected to the solid and flat annular portion 132 of this flange by three radial sections 136 between which are formed three corresponding lights 134.

Ces trois profilés 136 sont répartis à 120° l'un de l'autre, séparant entre eux les lumières 134 qui s'étendent autour de la bague 135. Les lumières 134 s'étendent en arc de cercle autour de la bague 135 sur une largeur, mesurée radialement, qui correspond au diamètre de la section interne du tube extérieur 110.These three profiles 136 are distributed at 120 ° to one another, separating the lights 134 which extend around the ring 135. The lights 134 extend in an arc around the ring 135 on a ring. width, measured radially, which corresponds to the diameter of the inner section of the outer tube 110.

Ainsi, lorsque la bride 130 est rapportée sur la contre-bride 115 du tube extérieur, les lumières 134 prolongent l'espace situé entre les deux tubes. La partie annulaire pleine de cette bride 130 recouvre la contre-bride 115 soudée sur le tube extérieur 110, et la bague 135 vient en serrage autour de la paroi ou embout conique 220 portée par le tube intérieur 210. Ainsi le liquide à chauffer traverse la bride 130 en circulant dans ses lumières 134.Thus, when the flange 130 is attached to the flange 115 of the outer tube, the lights 134 extend the space between the two tubes. The full annular portion of this flange 130 covers the counter-flange 115 welded to the outer tube 110, and the ring 135 is clamped around the wall or conical end 220 carried by the inner tube 210. Thus the liquid to be heated passes through the flange 130 circulating in its lights 134.

Les profilés 136 sont suffisamment fins pour autoriser une déformation radiale de la bague 135 sous l'effet d'une pénétration de la paroi conique 220. En d'autres termes, les profilés 136 se compriment ou s'étendent selon l'écartement imposé à la bague 135, sans que le col 132 de la bride 130 ne s'y oppose par sa rigidité.The profiles 136 are thin enough to allow radial deformation of the ring 135 under the effect of penetration of the conical wall 220. In other words, the profiles 136 are compressed or extend according to the spacing imposed on the ring 135, without the neck 132 of the flange 130 is opposed by its rigidity.

La mise en place initiale de la bride 130 se fait par serrage de celle-ci contre la contre-bride ou col 115 du tube extérieur, générant une mise en appui progressive de la bague 135 sur la paroi conique 220. Ce serrage se fait ici à froid, serrage suffisant pour assurer le contact électrique entre les deux tubes 110 et 210. La bague 135 est ici choisie à surface intérieure conique, d'inclinaison égale à celle de la paroi conique 220 portée par le tube intérieur 210. Ainsi la surface de contact est d'étendue optimale.The initial installation of the flange 130 is done by clamping it against the counter-flange or neck 115 of the outer tube, generating a progressive bearing of the ring 135 on the conical wall 220. This clamping is done here cold, sufficient clamping to ensure electrical contact between the two tubes 110 and 210. The ring 135 is here chosen conical inner surface, inclined equal to that of the conical wall 220 carried by the inner tube 210. Thus the surface contact is of optimal extent.

La paroi conique est ici fermée de sorte qu'elle forme un bouchon du tube intérieur 210.The conical wall is here closed so that it forms a plug of the inner tube 210.

L'ensemble est assemblé mécaniquement en ajustement serré à froid par visserie ou par toute technique que ce soit. L'ensemble est démontable tube par tube.The assembly is assembled mechanically in a cold fit by screws or any other technique. The set is removable tube by tube.

En fonctionnement, le tube intérieur 210 se dilatant un peu plus que le tube extérieur 110, un serrage mécanique au niveau de la bague 135 se trouve naturellement renforcé sur l'ensemble de cette surface de contact conique.In operation, the inner tube 210 expands a little more than the outer tube 110, a mechanical clamping at the ring 135 is naturally reinforced on all of this conical contact surface.

On notera qu'un courant, appliqué sur les contre-brides 115 situées aux deux extrémités du dispositif, ne circule pas seulement dans la paroi du tube extérieur 110. Il circule également par contact de la contre-bride 115 à la bride 130, puis du contour de la bride 130 à la bague 135 par l'intermédiaire des profilés 136, de la bague 135 au tube intérieur 210 par l'intermédiaire de l'appui conique, puis dans le tube intérieur 210. Le retour de courant se fait selon le même trajet, à l'autre extrémité du dispositif.It will be noted that a current, applied on the counter-flanges 115 situated at the two ends of the device, does not circulate only in the wall of the outer tube 110. It also circulates by contact of the counter-flange 115 with the flange 130, then from the contour of the flange 130 to the ring 135 via the profiles 136, the ring 135 to the inner tube 210 through the conical support, then into the inner tube 210. The current return is done according to the same path, at the other end of the device.

Bien entendu l'invention ne se limite pas à un seul mode de réalisation et les fonctions décrites ici pourront être adoptées selon d'autres modalités de mise en oeuvre.Of course, the invention is not limited to a single embodiment and the functions described here can be adopted according to other implementation modalities.

Ainsi, la bride 130 comportant la bague conique 135 peut avoir différentes formes, par exemple ronde, ovale, carrée, rectangulaire. Elle peut être assujettie par soudure, brasure ou par assemblage mécanique démontable à d'autres structures mécaniques telles que shunt électrique, borne électrique, bride, tuyauterie. Elle assure la continuité électrique par contact de préférence démontable entre deux pièces concentriques.Thus, the flange 130 comprising the conical ring 135 can have different shapes, for example round, oval, square, rectangular. It can be secured by welding, brazing or mechanical assembly removable to other mechanical structures such as electrical shunt, electrical terminal, flange, piping. It ensures electrical continuity by preferably removable contact between two concentric parts.

Cette bride 130 est construite en tous types de matériaux conducteurs de l'électricité. Elle peut comporter sur sa structure ou dans sa structure des parties métalliques démontables ou non, pour assurer une bonne continuité électrique, par exemple cuivre, alu, argent, or.This flange 130 is constructed of all types of electrically conductive materials. It can have on its structure or in its structure metal parts removable or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.

Les profilés 136 supportant la bague 135 et permettant la continuité électrique sont faits en tous types de matériaux conducteurs de l'électricité. Ils peuvent comporter sur leur structure ou dans leur structure des parties métalliques démontables ou non, pour assurer une bonne continuité électrique, par exemple cuivre, alu, argent, or. Ils sont soit usinés dans la pièce, soit soudés, brasés sur la pièce ou serrés mécaniquement par toute technique que ce soit. Ces profilés ne sont pas limités en nombre, en dimension et en géométrie.The profiles 136 supporting the ring 135 and allowing electrical continuity are made of all types of electrically conductive materials. They may have on their structure or in their structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold. They are either machined in the room, welded, brazed on the piece or mechanically tightened by any technique. These profiles are not limited in number, size and geometry.

La bague 135, permettant la continuité électrique entre la bride 130 et la pièce concentrique 210, peut avoir différentes formes, par exemple, ronde, ovale, carrée, rectangulaire, et est réalisée en tous types de matériaux conducteurs de l'électricité. Elle peut comporter sur sa structure ou dans sa structure des parties métalliques démontables ou non, pour assurer une bonne continuité électrique, par exemple cuivre, alu, argent, or.The ring 135, allowing the electrical continuity between the flange 130 and the concentric piece 210, can have different shapes, for example, round, oval, square, rectangular, and is made of all types of electrically conductive materials. It can have on its structure or in its structure metal parts removable or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.

Les faces intérieures de contact sont de préférence géométriquement identiques aux faces de l'embout tronconique 220 du tube intérieur 210. La bague 135 est soit usinée dans la pièce, soit soudée, brasée sur la pièce ou serrée mécaniquement par toute technique que ce soit. Elle n'est pas limitée en dimension.The inner contact faces are preferably geometrically identical to the faces of the frustoconical tip 220 of the inner tube 210. The ring 135 is either machined in the workpiece, or welded, brazed to the workpiece or mechanically clamped by any technique whatsoever. It is not limited in size.

L'embout 220 du tube intérieur 210 peut avoir différentes formes, par exemple, conique, conique tronqué, conique décentré et est réalisé en tout type de matériau conducteur de l'électricité.The tip 220 of the inner tube 210 may have different shapes, for example, conical, truncated conical, conical off-center and is made of any type of electrically conductive material.

L'embout 220 peut comporter sur sa structure ou dans sa structure des parties métalliques démontables ou non, pour assurer une bonne continuité électrique, par exemple cuivre, aluminium, argent, or. Il est soit usiné dans la pièce, soit soudé, brasé sur la pièce, ou serré mécaniquement par toute technique que ce soit. L'embout 220 n'est pas limité en dimension.The tip 220 may comprise on its structure or in its structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold. It is either machined in the workpiece, welded, brazed on the workpiece, or mechanically tightened by any technique. The tip 220 is not limited in size.

La contre-bride 115 peut avoir différentes formes, par exemple ronde, ovale, carrée, rectangulaire. Elle est préférentiellement soudée sur le tube extérieur 110 et est réalisée dans tout type de matériau conducteur. Elle peut comporter sur sa structure ou dans sa structure des parties métalliques démontables ou non, pour assurer une bonne continuité électrique, par exemple cuivre, aluminium, argent, or.The counter-flange 115 can have different shapes, for example round, oval, square, rectangular. It is preferably welded to the outer tube 110 and is made of any type of conductive material. It may comprise on its structure or in its structure removable metal parts or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.

Elle peut être assujettie par soudure, brasure ou par assemblage mécanique démontable à d'autres structures mécaniques telles que shunt (court-circuit) électrique, borne électrique, bride. Elle assure le raccordement électrique de l'installation.It can be secured by welding, brazing or mechanical assembly removable to other mechanical structures such as shunt (electrical short circuit), electrical terminal, flange. It ensures the electrical connection of the installation.

Selon une variante avantageuse de l'invention, la paroi conique (220) ou la bague (135) est portée par le tube intérieur (210) et l'autre de ces deux éléments (220, 135) est porté par une pièce montée (130) libérable sur le tube extérieur (110).According to an advantageous variant of the invention, the conical wall (220) or the ring (135) is carried by the inner tube (210) and the other of these two elements (220, 135) is carried by a mounted part ( 130) releasable on the outer tube (110).

Avantageusement, l'élément formant la bague (135) au voisinage de son centre, porte des moyens de fixation à sa périphérie (132), qui sont aptes à coopérer avec des moyens (115) situés à la périphérie du tube extérieur (110).Advantageously, the element forming the ring (135) near its center, carries fastening means at its periphery (132), which are adapted to cooperate with means (115) located at the periphery of the outer tube (110). .

Là encore, les moyens de fixation de l'élément (130) portant la bague (135) sont préférentiellement de type libérables.Again, the fastening means of the element (130) carrying the ring (135) are preferably releasable type.

Les moyens de fixation de l'élément (130) portant la bague (135) sont par exemple constitués par un autre col (132) et de moyens aptes à maintenir cet autre col (132) sur le col (115) du tube extérieur (110).The fastening means of the element (130) carrying the ring (135) are for example constituted by another neck (132) and means able to hold this other neck (132) on the neck (115) of the outer tube ( 110).

Claims (9)

  1. Fluid heat-exchange device, comprising two tubes (110, 210), the outer tube (110) of which surrounds the inner tube (210), forming between them a fluid circulation space, electrical connection means (135, 220) for connection between these two tubes so that connecting the device to a power supply causes the two tubes (110, 210) to heat up by Joule heating, characterized in that the electrical connection means for connecting the two tubes comprise a conical wall (220) and a ring (135), each of these being fastened to a different tube from the inner (210) and outer (110) tubes, the ring (135) pressing all around on the conical wall (220) in such a way that a given differential expansion of the two tubes (110, 210) causes the conical wall (220) to press more strongly in the ring (135).
  2. Device according to Claim 1, characterized in that the conical wall (220) or the ring (135) is supported by the inner tube (210) and the other of these two elements (220, 135) is supported by a part (130) releasably mounted on the outer tube (110).
  3. Device according to Claim 1 or Claim 2, characterized in that the conical wall (220) is supported by the inner tube (210) and the ring (135) is mounted on the outer tube (110).
  4. Device according to any one of the preceding claims, characterized in that the ring (135) has a conical type internal surface.
  5. Device according to any one of the preceding claims, characterized in that it comprises an element forming the ring (135) near its centre and supporting fastening means on its periphery (132), which are capable of cooperating with means (115) located in the periphery of the outer tube (110), and having, between its periphery (132) and the ring (135), slots (134) for circulation of the fluid.
  6. Device according to Claim 5, characterized in that the means for fastening the element (130) carrying the ring (135) are releasable means.
  7. Device according to Claim 5 or Claim 6; characterized in that the outer tube (110) supports a collar (115) and in that the means for fastening the element (130) supporting the ring (135) are formed by another collar (132) and means capable of holding this other collar (132) against the collar (115) of the outer tube (110).
  8. Device according to any one of Claims 5 to 7, characterized in that the element (130) supporting the ring (135) includes a series of sections (136) extending substantially radially, between the ring (135) and the peripheral annular bearing (132), and providing the mechanical connection between the ring (135) and this part (132).
  9. Device according to Claim 7, characterized in that the annular flange (115) of the outer tube (110) forms means of contacting with an electrical connection.
EP20030291109 2002-05-13 2003-05-12 Double tube heat exchanger, having reinforced contact Expired - Lifetime EP1363083B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0205839 2002-05-13
FR0205839A FR2839603B1 (en) 2002-05-13 2002-05-13 DUAL TUBE HEAT EXCHANGE DEVICE WITH REINFORCED CONTACT

Publications (2)

Publication Number Publication Date
EP1363083A1 EP1363083A1 (en) 2003-11-19
EP1363083B1 true EP1363083B1 (en) 2006-06-21

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Application Number Title Priority Date Filing Date
EP20030291109 Expired - Lifetime EP1363083B1 (en) 2002-05-13 2003-05-12 Double tube heat exchanger, having reinforced contact

Country Status (4)

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EP (1) EP1363083B1 (en)
DE (1) DE60306257T2 (en)
ES (1) ES2266748T3 (en)
FR (1) FR2839603B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645702A (en) * 2019-11-05 2020-01-03 东莞珂洛赫慕电子材料科技有限公司 Be applied to water pipe of module and the module that generates heat of generating heat
CN110671812A (en) * 2019-11-14 2020-01-10 东莞珂洛赫慕电子材料科技有限公司 Instant heating type double-power heating module

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB238648A (en) * 1924-06-10 1925-08-27 Thomas Horace Mcquinn An improved electric water-heater
GB980454A (en) * 1960-12-14 1965-01-13 Ass Elect Ind Improvements in or relating to electrical resistance heaters

Also Published As

Publication number Publication date
DE60306257T2 (en) 2007-04-26
EP1363083A1 (en) 2003-11-19
FR2839603B1 (en) 2004-07-23
ES2266748T3 (en) 2007-03-01
DE60306257D1 (en) 2006-08-03
FR2839603A1 (en) 2003-11-14

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