WO2006021674A1 - Deformable exchanger - Google Patents

Deformable exchanger Download PDF

Info

Publication number
WO2006021674A1
WO2006021674A1 PCT/FR2005/002058 FR2005002058W WO2006021674A1 WO 2006021674 A1 WO2006021674 A1 WO 2006021674A1 FR 2005002058 W FR2005002058 W FR 2005002058W WO 2006021674 A1 WO2006021674 A1 WO 2006021674A1
Authority
WO
WIPO (PCT)
Prior art keywords
diameter
fluid
envelope
circuit
exchanger
Prior art date
Application number
PCT/FR2005/002058
Other languages
French (fr)
Inventor
Jean-Marie Gueguen
Original Assignee
Societe Spirec
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Societe Spirec filed Critical Societe Spirec
Priority to PL05796036T priority Critical patent/PL1784613T3/en
Priority to EP05796036A priority patent/EP1784613B1/en
Priority to AT05796036T priority patent/ATE464523T1/en
Priority to DE602005020641T priority patent/DE602005020641D1/en
Priority to US11/659,615 priority patent/US20080073064A1/en
Publication of WO2006021674A1 publication Critical patent/WO2006021674A1/en

Links

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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/04—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being formed by spirally-wound plates or laminae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G13/00—Appliances or processes not covered by groups F28G1/00 - F28G11/00; Combinations of appliances or processes covered by groups F28G1/00 - F28G11/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/02—Removable elements

Definitions

  • the present invention relates to exchangers and in particular exchangers intended to ensure a heat exchange between two fluids.
  • the heat exchangers using fluids consist of two circuits isolated from each other but which are in the highest possible thermal contact, and which are respectively traversed by the two fluids.
  • the maintenance of heat exchangers, and in particular their cleaning is generally a long and difficult operation to perform efficiently, or even sometimes impossible.
  • cleaning sometimes consists of eliminating, for example, the scale that has settled in the exchanger throughout the use of the latter.
  • brazed plate type exchangers are not removable and therefore their circuits are also difficult to clean.
  • the present invention aims to provide means for a user to perform such cleaning, and this simply and quickly.
  • the present invention thus relates to a heat exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact, a first fluid circuit, or beam, consisting of a spiral winding of two walls. and the second circuit being constituted by an enclosure containing the beam, each circuit having its own fluid inlet and outlet means, characterized in that the beam is elastically deformable under the effect of an overpressure or a depression.
  • the enclosure will preferably be of tubular shape and, when the internal pressure of the beam is equal to its external pressure, its external diameter will be slightly less than or equal to the internal diameter of the enclosure. The difference in diameter between the inner face of the enclosure and the outer face of the beam will be less than 6% of the diameter of the latter.
  • the tubular casing may comprise two bottoms, at least one of which may be removable, these bottoms being traversed respectively by the means of entry and exit of the fluids, and means capable of sealing between the bottoms and the input and output means of the beam fluid.
  • These inlet and outlet means may consist respectively of two longitudinal tubes and the means capable of sealing between the tubes and the bottoms may consist of O-rings or a gland.
  • the present invention also relates to a method of intervention, such as for example a cleaning, on a beam of a spiral-type exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact a first fluid circuit, or beam, consisting of a spiral winding of two walls, or a beam, and the second circuit consisting of a volume delimited by an envelope containing the beam, each circuit comprising its own input means and fluid outlet, characterized in that it comprises the steps of: subject, before removal, the beam to a depression and / or a relative cooling with respect to its envelope, so as to make it contract, once the beam extracted from its envelope interrupt the depression,
  • the beam can be made so that it is deformable under the effect of a pressure difference between the beam and the enclosure of an overpressure or a vacuum and give it a lower outer diameter .
  • the inner diameter of the envelope and apply to the beam periodic overpressures and / or depressions to change its outer diameter and break the fragile elements that can adhere to the walls (scale) that are deposited on him.
  • the method may include a preliminary step of disconnecting the beam from its circuit.
  • a limiter will be placed around the beam whose internal diameter will be equal to the maximum diameter that is wish not to exceed.
  • This limiter may consist of a ring or a sleeve.
  • Figure 1 is a schematic cross-sectional view of an exchanger according to the invention.
  • FIG. 2 is a perspective view of an exchanger forming beam shown in FIG. 1.
  • FIG. 3 is a perspective view of the envelope enclosing the beam shown in FIG.
  • Figures 4 and 5 are perspective views of a beam of an exchanger according to the invention respectively equipped with a sleeve and rings for limiting its outer diameter.
  • FIGS. 1 to 3 show an exchanger according to the invention which essentially consists of an envelope 1 which is intended to receive a beam 3.
  • the beam 3 consists of a spiral winding of two sheet sheets 5 which are spaced from each other and welded in order to provide a fluid circuit between them.
  • the spacing of these two sheets of sheet metal 5 is ensured by a series of "pins" 7 which are created and distributed over the surface of the sheet before folding it. These pins 7, once the winding performed, also ensure a regular and controlled spacing between the turns.
  • the space between the two sheets of folded sheet comprises a supply duct 9 and a discharge duct 11.
  • the envelope 1 consists of a cylindrical tube 13 whose inner diameter corresponds to the outer diameter of the beam 3, so as to receive it.
  • the casing 1, as shown in FIG. 3, has a fluid supply duct 15 and a discharge duct 17.
  • the tube 13 is closed on the one hand by a bottom 19 which is fixed and which is traversed by the exhaust duct 11 of the bundle 3 with the interposition of an O-ring seal 23 and on the other hand, at its other end, by a removable bottom 25 and which, for this purpose, is held by clamping flanges 27 which bear on a flange 29 of the tube 13.
  • An O-ring 31 ensures the seal between the cover 25 and the supply duct 9 of the beam 3.
  • the intervention can be made easier and more effective if the beam 3 is expanded beyond its nominal diameter by applying this time an overpressure. Care should be taken during this operation not to deform beyond the elastic limit of the material used, so that it can resume its nominal diameter from the end of cleaning and the interruption of the overpressure.
  • the vacuum pump is disconnected so that the beam resumes its dimensions and nominal form.
  • the beam 3 can be made to act simultaneously on the beam is depression and cooling, or the pressure and heating.
  • the beam 3 it is possible to give the beam 3 a diameter smaller than the internal diameter of the casing 1.
  • Such an arrangement is particularly advantageous in that it allows for an automatic or almost automatic elimination of fragile deposits (eg limestones ) that occur on the walls of the beam. It suffices to subject the beam, for example during its operation, to an overpressure (or depression) of the fluid that passes through it to deform and burst the tartar plates that cover it. These operations can even be performed automatically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Gas Separation By Absorption (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Power Steering Mechanism (AREA)

Abstract

The invention concerns a heat exchanger comprising two mutually isolated fluid circuits in close thermal contact, a first fluid circuit, or bundle (3), consisting of a helical winding of two walls and the second circuit consisting of a chamber containing the bundle (3), each circuit including its own fluid input and output means. Said heat exchanger is characterized in that the bundle is elastically deformable under the effect of excess pressure or low pressure.

Description

ECHANGEUR DEFORMABLE DEFORMABLE EXCHANGER
La présente invention concerne les échangeurs et notamment les échangeurs destinés à assurer un échange thermique entre deux fluides . Sur un plan général on sait que les échangeurs de chaleur mettant en oeuvre des fluides sont constitués de deux circuits isolés l'un de l'autre mais qui sont en contact thermique le plus élevé possible, et qui sont respectivement parcourus par les deux fluides. On sait également que l'entretien des échangeurs de chaleur, et en particulier leur nettoyage, est généralement une opération longue et difficile à réaliser de façon efficace, voire même parfois impossible. On sait enfin qu'un tel nettoyage consiste parfois à éliminer par exemple le tartre qui s'est déposé dans l'échangeur au long de l'utilisation de celui-ci.The present invention relates to exchangers and in particular exchangers intended to ensure a heat exchange between two fluids. On a general level, it is known that the heat exchangers using fluids consist of two circuits isolated from each other but which are in the highest possible thermal contact, and which are respectively traversed by the two fluids. It is also known that the maintenance of heat exchangers, and in particular their cleaning, is generally a long and difficult operation to perform efficiently, or even sometimes impossible. Finally, it is known that such cleaning sometimes consists of eliminating, for example, the scale that has settled in the exchanger throughout the use of the latter.
Les échangeurs de type dit à plaques et joints constitués à partir de plus de feuilles de tôle sont démontables plaque par plaque si bien qu'il est ainsi possible d'accéder à leurs circuits, même s'il s'agit là d'une opération longue à mettre en oeuvre. Cependant ces échangeurs, en raison de leur conception même, sont donc d'une exploitation coûteuse.The so-called plates and seals type exchangers made from more sheets of sheet metal can be dismantled plate by plate so that it is thus possible to access their circuits, even if this is an operation. long to implement. However, these exchangers, because of their very design, are therefore an expensive operation.
Par ailleurs, les échangeurs de type à plaques brasées ne sont pas démontables et donc leurs circuits sont également difficilement nettoyables.Furthermore, brazed plate type exchangers are not removable and therefore their circuits are also difficult to clean.
C'est pourquoi on s'est tourné vers les échangeurs spirales qui sont constitués à partir de deux feuilles de tôle qui sont enroulées et sont maintenues écartées l'une de l'autre par des picots. Après enroulement on procède à la soudure des bords de feuille de tôle de façon à créer deux circuits de fluide indépendants, à savoir un premier circuit compris entre les deux feuilles de tôle enroulées et soudées et un second circuit compris entre les différentes spires de l'enroulement. Pour des raisons relevant du mode de construction, l'utilisateur n'a pas accès aussi bien à l'espace compris entre les deux feuilles enroulées, qu'à celui compris entre les diverses spires de l'enroulement, si bien qu'il est dans l'impossibilité de réaliser un nettoyage mécanique efficace de cet échangeur et que l'on doit alors se contenter de nettoyage de type chimique, ce qui est souvent insuffisant pour certaines applications .This is why we turned to the spiral exchangers which consist of two sheets of sheet metal which are wound and are kept apart from each other by pins. After winding, the edges of sheet metal are welded so as to create two independent fluid circuits, namely a first circuit between the two sheets wound and welded sheet and a second circuit between the different turns of the winding. For reasons relating to the method of construction, the user does not have access to the space between the two rolled sheets as well as that between the various turns of the winding, so that it is in the impossibility of performing an effective mechanical cleaning of this exchanger and that one must then be content with cleaning chemical type, which is often insufficient for some applications.
Or ces échangeurs, de par leur constitution, nécessitent pour un bon entretien efficace que l'on puisse accéder non seulement aux enroulements eux-mêmes mais également à leur espace interspires. Or celui-ci est des plus réduits ce qui rend encore plus problématique leur nettoyage des échangeurs surtout lorsqu'il s'agit d'éliminer des dépôts tels que le tartre de ceux-ciHowever these exchangers, by their constitution, require for a good efficient maintenance that we can access not only the windings themselves but also their interspires space. But this one is more reduced which makes even more problematic their cleaning exchangers especially when it comes to removing deposits such as the scale of these
Cependant, nombre d'applications qui seraient ouvertes à ce type d' échangeurs, telles que des utilisations dans le domaine de l'alimentaire, du médical, de la pharmacie, de la chimie fine, ou de électronique notamment, impliquent des nettoyages périodiques d'une grande efficacité.However, many applications that would be open to this type of exchanger, such as uses in the food, medical, pharmaceutical, fine chemicals, or electronics in particular, involve periodic cleaning of 'a great efficiency.
La présente invention a pour but de proposer des moyens permettant à un utilisateur de réaliser un tel nettoyage, et ceci de façon simple et rapide.The present invention aims to provide means for a user to perform such cleaning, and this simply and quickly.
La présente invention a ainsi pour objet un échangeur de chaleur comprenant deux circuits de fluides isolés l'un de l'autre en contact d'échange thermique intime, un premier circuit de fluide, ou faisceau, étant constitué par un enroulement spirale de deux parois et le second circuit étant constitué par une enceinte contenant le faisceau, chaque circuit comportant ses propres moyens d'entrée et de sortie de fluide, caractérisé en ce que le faisceau est déformable élastiquement sous l'effet d'une surpression ou d'une dépression. Suivant l'invention l'enceinte sera préférentiellement de forme tubulaire et, lorsque la pression interne du faisceau sera égale à sa pression externe son diamètre externe sera légèrement inférieur ou égal au diamètre interne de l'enceinte. La différence de diamètre entre la face interne de l'enceinte et la face externe du faisceau sera inférieure à 6% du diamètre de ce dernier.The present invention thus relates to a heat exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact, a first fluid circuit, or beam, consisting of a spiral winding of two walls. and the second circuit being constituted by an enclosure containing the beam, each circuit having its own fluid inlet and outlet means, characterized in that the beam is elastically deformable under the effect of an overpressure or a depression. According to the invention, the enclosure will preferably be of tubular shape and, when the internal pressure of the beam is equal to its external pressure, its external diameter will be slightly less than or equal to the internal diameter of the enclosure. The difference in diameter between the inner face of the enclosure and the outer face of the beam will be less than 6% of the diameter of the latter.
L'enveloppe tubulaire pourra comporter deux fonds, dont l'un au moins pourra être amovible, ces fonds étant respectivement traversés par les moyens d'entrée et de sortie des fluides, et des moyens aptes à assurer l'étanchéité entre les fonds et les moyens d'entrée et de sortie du fluide du faisceau. Ces moyens d'entrée et de sortie pourront être respectivement constitués de deux tubes longitudinaux et les moyens aptes à assurer l'étanchéité entre les tubes et les fonds pourront être constitués de joints toriques ou d'un presse-étoupe.The tubular casing may comprise two bottoms, at least one of which may be removable, these bottoms being traversed respectively by the means of entry and exit of the fluids, and means capable of sealing between the bottoms and the input and output means of the beam fluid. These inlet and outlet means may consist respectively of two longitudinal tubes and the means capable of sealing between the tubes and the bottoms may consist of O-rings or a gland.
La présente invention a également pour objet un procédé d'intervention, tel que par exemple un nettoyage, sur un faisceau d'un échangeur de type spirale comportant deux circuits de fluides isolés l'un de l'autre en contact d'échange thermique intime, un premier circuit de fluide, ou faisceau, étant constitué par un enroulement spirale de deux parois, ou faisceau, et le second circuit étant constitué par un volume délimité par une enveloppe contenant le faisceau, chaque circuit comportant ses propres moyens d'entrée et de sortie de fluide, caractérisé en ce qu'il comporte les étapes consistant à : soumettre, avant son retrait, le faisceau à une dépression et/ou à un refroidissement relatif par rapport à son enveloppe, de façon à le faire se contracter, une fois le faisceau extrait de son enveloppe interrompre la dépression,The present invention also relates to a method of intervention, such as for example a cleaning, on a beam of a spiral-type exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact a first fluid circuit, or beam, consisting of a spiral winding of two walls, or a beam, and the second circuit consisting of a volume delimited by an envelope containing the beam, each circuit comprising its own input means and fluid outlet, characterized in that it comprises the steps of: subject, before removal, the beam to a depression and / or a relative cooling with respect to its envelope, so as to make it contract, once the beam extracted from its envelope interrupt the depression,
- procéder à l'intervention sur le faisceau,- carry out the intervention on the beam,
- soumettre de nouveau le faisceau à une dépression et/ou à un refroidissement relatif par rapport à son enveloppe, afin de le faire se contracter avant sa mise en place dans l'enveloppe, remettre le faisceau à la pression et/ou à la température ambiante une fois qu'il a été remis en place dans son enveloppe.- Re-submit the beam to a vacuum and / or a relative cooling with respect to its envelope, to make it contract before its introduction into the envelope, put the beam back to the pressure and / or temperature once it has been put back in its envelope.
Suivant l'invention on pourra réaliser le faisceau de façon qu'il soit déformable sous l'effet d'une différence de pression entre le faisceau et l'enceinte d'une surpression ou d'une dépression et lui donner un diamètre externe inférieur. au diamètre interne de l'enveloppe et appliquer au faisceau des surpressions et/ou des dépressions périodiques afin de modifier son diamètre externe et briser les éléments fragiles qui peuvent adhères aux parois (tartre) qui se déposent sur lui.According to the invention the beam can be made so that it is deformable under the effect of a pressure difference between the beam and the enclosure of an overpressure or a vacuum and give it a lower outer diameter . to the inner diameter of the envelope and apply to the beam periodic overpressures and / or depressions to change its outer diameter and break the fragile elements that can adhere to the walls (scale) that are deposited on him.
Le procédé pourra comporter une étape préliminaire consistant à déconnecter le faisceau de son circuit. On pourra également suivant l'invention favoriser l'opération d'intervention en soumettant le faisceau, une fois celui-ci extrait de son enveloppe, et avant l'intervention, à une surpression et/ou à un échauffement relatif par rapport à l'enveloppe, qui aura pour effet d'écarter les spires de l'enroulement les unes des autres. l'The method may include a preliminary step of disconnecting the beam from its circuit. According to the invention, it is also possible to favor the intervention operation by subjecting the beam, once it has been extracted from its envelope, and before the intervention, to an overpressure and / or a relative heating with respect to the envelope, which will have the effect of spreading the turns of the winding from each other. the
Afin d'éviter de soumettre le faisceau à une pression trop forte ayant pour conséquences de déformer le métal constituant l'enroulement au delà de sa limite élastique on disposera autour du faisceau un limiteur dont le diamètre interne sera égal au diamètre maximal que l'on souhaite ne pas dépasser. Ce limiteur pourra être constitué d'une bague ou d'un fourreau.In order to avoid subjecting the beam to too high a pressure having the consequences of deforming the metal constituting the winding beyond its elastic limit, a limiter will be placed around the beam whose internal diameter will be equal to the maximum diameter that is wish not to exceed. This limiter may consist of a ring or a sleeve.
On décrira ci-après, à titre d'exemple non limitatif, une forme d'exécution de la présente invention, en référence au dessin annexé sur lequel :An embodiment of the present invention will be described hereinafter by way of nonlimiting example, with reference to the appended drawing in which:
La figure 1 est une vue schématique en coupe transversale d'un échangeur suivant l'invention.Figure 1 is a schematic cross-sectional view of an exchanger according to the invention.
La figure 2 est une vue en perspective d'un faisceau constituant échangeur représenté sur la figure 1. La figure 3 est une vue en perspective de l'enveloppe renfermant le faisceau représenté sur la figure 2.FIG. 2 is a perspective view of an exchanger forming beam shown in FIG. 1. FIG. 3 is a perspective view of the envelope enclosing the beam shown in FIG.
Les figures 4 et 5 sont des vues en perspective d'un faisceau d'un échangeur suivant l'invention respectivement équipé d'un manchon et de bagues de limitation de son diamètre extérieur.Figures 4 and 5 are perspective views of a beam of an exchanger according to the invention respectively equipped with a sleeve and rings for limiting its outer diameter.
On a représenté sur les figures 1 à 3 un échangeur suivant l'invention qui est essentiellement constitué d'une enveloppe 1 qui est destinée à recevoir un faisceau 3.FIGS. 1 to 3 show an exchanger according to the invention which essentially consists of an envelope 1 which is intended to receive a beam 3.
Le faisceau 3 est constitué d'un enroulement spirale de deux feuilles de tôle 5 qui sont écartées l'une de l'autre et soudées afin de prévoir entre elles un circuit de fluide.The beam 3 consists of a spiral winding of two sheet sheets 5 which are spaced from each other and welded in order to provide a fluid circuit between them.
L'écartement de ces deux feuilles de tôle 5 est assuré par une série de "picots" 7 qui sont créés et répartis sur la surface de la tôle avant le pliage de celle-ci. Ces picots 7, une fois l'enroulement effectué, assurent également un écartement régulier et contrôlé entre les spires. L'espace compris entre les deux feuilles de tôle pliées comporte un conduit d'alimentation 9 et un conduit d'évacuation 11.The spacing of these two sheets of sheet metal 5 is ensured by a series of "pins" 7 which are created and distributed over the surface of the sheet before folding it. These pins 7, once the winding performed, also ensure a regular and controlled spacing between the turns. The space between the two sheets of folded sheet comprises a supply duct 9 and a discharge duct 11.
L'enveloppe 1 est constituée d'un tube cylindrique 13 dont le diamètre interne correspond au diamètre externe du faisceau 3, de façon à pouvoir recevoir celui-ci. L'enveloppe 1, ainsi que représenté sur la figure 3, possède un conduit d'alimentation 15 en fluide et un conduit d'évacuation 17. Le tube 13 est fermé d'une part par un fond 19 qui est fixe et qui est traversé par le conduit d'évacuation 11 du faisceau 3 avec interposition d'un joint torique d'étanchéité 23 et d'autre part, à son autre extrémité, par un fond 25 amovible et qui, à cet effet, est maintenu par brides de serrage 27 qui prennent appui sur une collerette 29 du tube 13. Un joint torique 31 assure 1'étanchéité entre le couvercle 25 et le conduit d'alimentation 9 du faisceau 3. Ainsi, par un simple démontage du fond amovible 25 on a un accès au faisceau 3, après avoir soit déconnecté celui-ci des tuyaux d'alimentation reliés à ses conduites 9 et 11, soit en disposant d'une sortie 11 de longueur suffisante.The envelope 1 consists of a cylindrical tube 13 whose inner diameter corresponds to the outer diameter of the beam 3, so as to receive it. The casing 1, as shown in FIG. 3, has a fluid supply duct 15 and a discharge duct 17. The tube 13 is closed on the one hand by a bottom 19 which is fixed and which is traversed by the exhaust duct 11 of the bundle 3 with the interposition of an O-ring seal 23 and on the other hand, at its other end, by a removable bottom 25 and which, for this purpose, is held by clamping flanges 27 which bear on a flange 29 of the tube 13. An O-ring 31 ensures the seal between the cover 25 and the supply duct 9 of the beam 3. Thus, by a simple disassembly of the removable bottom 25 one has access to beam 3, after having disconnected it from the supply pipes connected to its lines 9 and 11, or by having an outlet 11 of sufficient length.
On sait que ce type d'échangeurs nécessite un jeu minimal entre le faisceau 3 et la face interne du tube dans lequel il est disposé. Or dans certains échangeurs notamment en acier inoxydable qui sont destinés à des applications qui requièrent une attention particulière, notamment dans le domaine de la pharmacie ou dans le domaine alimentaire, il est nécessaire que le faisceau puisse être retiré de son enveloppe sans, au cours de cette opération, former des rayures sur la paroi interne du tube, de telles rayures constituant notamment des lieux de nidations pour les bactéries.It is known that this type of exchanger requires a minimum clearance between the beam 3 and the inner face of the tube in which it is disposed. However, in certain heat exchangers, particularly stainless steel heat exchangers, which are intended for applications requiring particular attention, in particular in the field of pharmacy or in the food industry, it is necessary for the bundle to be withdrawn from its envelope without, during this operation, forming scratches on the inner wall of the tube, such scratches constituting in particular nesting sites for bacteria.
Pour résoudre cette difficulté on fait en sorte que le faisceau 3 soit déformable au niveau de son diamètre sous l'effet d'une contrainte. Pour rendre ainsi le faisceau déformable on jouera sur l'épaisseur et la nature de l'acier utilisé.To solve this problem, it is made sure that the beam 3 is deformable at its diameter under the effect of a constraint. To make the deformable beam thus we will play on the thickness and the nature of the steel used.
Sur un échangeur assemblé que l'on souhaite démonter on provoquera la rétraction du faisceau 3 en reliant l'une des entrées 9 ou 11 de celui-ci à une pompe à vide, après avoir obturé l'autre entrée, afin de créer un vide partiel. On pourra alors démonter le faisceau sans risquer de rayer la face interne de l'enveloppe 1. Une fois le faisceau 3 démonté on supprimera le vide de façon qu'il se dilate et reprenne son diamètre naturel initial, puis on procédera à l'intervention (notamment à un nettoyage mécanique) sur celui-ci.On an assembled exchanger which it is desired to disassemble, it will cause the retraction of the beam 3 by connecting one of the inputs 9 or 11 thereof to a vacuum pump, after having closed the other input, in order to create a vacuum part. It will then be possible to dismantle the beam without the risk of scratching the inner face of the casing 1. Once the beam 3 has been dismantled, the vacuum will be eliminated so that it expands and resumes its initial natural diameter, then the procedure will be carried out. (including mechanical cleaning) on it.
L'intervention pourra être rendue plus facile et plus efficace si l'on dilate le faisceau 3 au delà de son diamètre nominal en lui appliquant cette fois ci une surpression. On prendra soin au cours de cette opération de ne pas le déformer au delà de la limite élastique du matériau utilisé, afin qu'il puisse reprendre son diamètre nominal dès la fin du nettoyage et de l'interruption de la surpression.The intervention can be made easier and more effective if the beam 3 is expanded beyond its nominal diameter by applying this time an overpressure. Care should be taken during this operation not to deform beyond the elastic limit of the material used, so that it can resume its nominal diameter from the end of cleaning and the interruption of the overpressure.
Afin de limiter la déformation à une valeur maximale contrôlée du faisceau 3 on pourra, ainsi que représenté sur la figure 4, entourer celui-ci, avant d'appliquer la surpression, d'une bague ou d'un manchon 20 dont le diamètre interne est égal au diamètre maximal possible que peut prendre le faisceau 3 sans subir de déformation au delà de sa limite élastique. On peut également faire appel à des bagues 20, ainsi que représenté sur a figure 5.In order to limit the deformation to a maximum controlled value of the beam 3, it is possible, as shown in FIG. 4, to surround the latter, before applying the overpressure, with a ring or a sleeve 20 whose internal diameter is equal to the maximum possible diameter that can take the beam 3 without undergoing deformation beyond its elastic limit. It is also possible to use rings 20, as shown in FIG.
Une fois l'intervention sur le faisceau terminé on fait de nouveau le vide dans celui-ci de façon à pouvoir le mettre en place facilement dans l'enveloppe 1, puis on déconnecte la pompe à vide de façon que le faisceau reprenne ses dimensions et forme nominales.Once the intervention on the finished beam is evacuated in it so that it can be easily put into place in the envelope 1, then the vacuum pump is disconnected so that the beam resumes its dimensions and nominal form.
On peut également suivant l'invention faire appel à une variation relative de température pour faire se contracter ou se dilater le faisceau. Ainsi, avant le démontage du faisceau de son enveloppe, on pourra faire circuler dans le faisceau un liquide fortement refroidi, notamment voisin de ou même inférieur à 0°C, afin de le faire se contracter, et on pourra, dans le même temps, soumettre l'enveloppe à une température supérieure à la température ambiante afin de la faire se dilater.It is also possible according to the invention to use a relative variation in temperature to contract or expand the beam. Thus, before dismounting the bundle of its envelope, it will be possible to circulate in the bundle a strongly cooled liquid, in particular close to or even below 0 ° C., in order to make it contract, and it will be possible, at the same time, to subject the envelope to a temperature above room temperature to expand.
Bien entendu, suivant l'invention on pourra faire agir de façon simultanée sur le faisceau soit la dépression et le refroidissement, soit la surpression et le chauffage. Pour certaines applications il est possible de donner au faisceau 3 un diamètre inférieur au diamètre interne de l'enveloppe 1. Une telle disposition est particulièrement intéressante en ce qu'elle permet de réaliser une élimination automatique ou quasi automatique des dépôts fragiles (ex. calcaires) qui se produisent sur les parois du faisceau. Il suffit en effet de soumettre le faisceau, par exemple au cours de son fonctionnement, à une surpression (ou une dépression) du fluide qui le traverse pour le déformer et faire éclater les plaquettes de tartre qui le recouvrent. Ces opérations peuvent même être réalisées de façon automatique. Of course, according to the invention can be made to act simultaneously on the beam is depression and cooling, or the pressure and heating. For some applications it is possible to give the beam 3 a diameter smaller than the internal diameter of the casing 1. Such an arrangement is particularly advantageous in that it allows for an automatic or almost automatic elimination of fragile deposits (eg limestones ) that occur on the walls of the beam. It suffices to subject the beam, for example during its operation, to an overpressure (or depression) of the fluid that passes through it to deform and burst the tartar plates that cover it. These operations can even be performed automatically.

Claims

REVENDICATIONS
1.- Echangeur de chaleur comprenant deux circuits de fluides isolés l'un de l'autre en contact d'échange thermique intime, un premier circuit de fluide, ou faisceau1.- Heat exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact, a first fluid circuit, or beam
(3) , étant constitué par un enroulement spirale de deux parois et le second circuit étant constitué par une enceinte contenant le faisceau (3) , chaque circuit comportant ses propres moyens d'entrée et de sortie de fluide, caractérisé en ce que le faisceau est déformable élastiquement sous l'effet d'une surpression ou d'une dépression.(3) being constituted by a spiral winding of two walls and the second circuit consisting of an enclosure containing the beam (3), each circuit having its own fluid inlet and outlet means, characterized in that the beam is elastically deformable under the effect of an overpressure or a depression.
2.- Echangeur suivant la revendication 1 caractérisé en ce que la dite enceinte est de forme tubulaire et lorsque la pression interne du faisceau est égale à sa pression externe son diamètre externe est légèrement inférieur ou égal au diamètre interne de l'enceinte.2.- exchanger according to claim 1 characterized in that said enclosure is of tubular shape and when the internal pressure of the beam is equal to its external pressure, its outer diameter is slightly less than or equal to the internal diameter of the enclosure.
3.- Echangeur suivant la revendication 2 caractérisé en ce que la différence de diamètre entre la face interne de l'enceinte et la face externe du faisceau est inférieur au plus à 6% du diamètre de ce dernier.3.- exchanger according to claim 2 characterized in that the difference in diameter between the inner face of the chamber and the outer face of the beam is less than at most 6% of the diameter of the latter.
4.- Echangeur suivant l'une des revendications précédentes caractérisé en ce que l'enveloppe tubulaire (1) comporte deux fonds (19,25) dont l'un au moins est amovible et qui sont respectivement traversés par les moyens d'entrée (9) et de sortie (11) du fluide, et des moyens aptes à assurer l'étanchéité entre les fonds et les moyens d'entrée et de sortie du fluide du faisceau (3) .4.- exchanger according to one of the preceding claims characterized in that the tubular casing (1) comprises two funds (19,25) of which at least one is removable and which are respectively crossed by the input means ( 9) and outlet (11) of the fluid, and means adapted to ensure sealing between the bottoms and the input and output means of the beam fluid (3).
5.- Echangeur suivant la revendication 4 caractérisé en ce que les moyens aptes à assurer l'étanchéité entre les tubes et le fonds sont constitués de joints toriques (23,31) ou d'un presse-étoupe. 5.- exchanger according to claim 4 characterized in that the means for sealing between the tubes and the fund consist of O-rings (23,31) or a gland.
6.- Dispositif limiteur du diamètre externe d'un faisceau (3) d'un échangeur suivant l'une des revendications précédentes, caractérisé en ce qu'il est constitué d'au moins un élément calibré (20). dont le diamètre interne est égal au diamètre externe maximal que l'on souhaite admissible et qui est destiné à être disposé autour de celui-ci' après qu'il ait été sorti de l'enveloppe (1) afin d'en contrôler le diamètre lorsqu'on le soumet à une surpression et/ou une élévation contrôlée de température. 6.- limiting device of the outer diameter of a beam (3) of an exchanger according to one of the preceding claims, characterized in that it consists of at least one calibrated element (20). whose internal diameter is equal to the maximum outer diameter that is eligible desired and which is intended to be arranged around the latter after it has been removed from the casing (1) in order to control the diameter when subjected to an overpressure and / or a controlled rise in temperature.
7.- Dispositif suivant la revendication 6 caractérisé en ce que le susdit élément est constitué d'une bague ou d'un fourreau (20) .7.- Device according to claim 6 characterized in that the aforesaid element consists of a ring or a sleeve (20).
8.- Procédé d'intervention, tel que notamment un nettoyage, sur un faisceau d'un échangeur de chaleur de type spirale comportant deux circuits de fluides isolés l'un de l'autre en contact d'échange thermique intime, un premier circuit de fluide étant constitué par un enroulement spirale de deux parois, ou faisceau, et le second circuit étant constitué par un volume délimité par une enveloppe contenant le faisceau, chaque circuit comportant ses propres moyens d'entrée et de sortie de fluide, caractérisé en ce qu'il comporte les étapes consistant à : soumettre, avant son retrait, le faisceau à une dépression, et/ou à un refroidissement relatif par rapport à son enveloppe, de façon à le faire se contracter, remettre le faisceau à la pression et/ou à la température ambiante une fois qu'il a été extrait de son enveloppe afin de lui faire recouvrer ses dimensions initiales, - procéder à l'intervention sur le faisceau, - soumettre de nouveau le faisceau à une dépression et/ou à un refroidissement relatif par rapport à son enveloppe, afin de le faire se contracter avant sa mise en place dans l'enveloppe, - remettre le faisceau à la pression et/ou à la température ambiante une fois qu' il a été remis en place dans son enveloppe.8.- Intervention method, such as in particular cleaning, on a beam of a spiral type heat exchanger comprising two fluid circuits isolated from each other in intimate heat exchange contact, a first circuit fluid being constituted by a spiral winding of two walls, or beam, and the second circuit consisting of a volume delimited by an envelope containing the beam, each circuit having its own fluid inlet and outlet means, characterized in that it comprises the steps of: subject, before removal, the beam to a depression, and / or a relative cooling with respect to its envelope, so as to make it contract, put the beam back to the pressure and / or at room temperature once it has been removed from its envelope in order to recover its initial dimensions, - proceed to the intervention on the beam, - resubmit the beam to a depression and / or a relative cooling with respect to its envelope, in order to make it shrink before it is placed in the envelope, - put the beam back to the pressure and / or the room temperature once it has been put back in its envelope.
9.- Procédé suivant la revendication 8 caractérisé en ce qu'il comporte une étape préliminaire consistant à déconnecter le faisceau de son circuit.9. A process according to claim 8 characterized in that it comprises a preliminary step of disconnecting the beam of its circuit.
10.- Procédé suivant l'une dés revendications 8 ou 9 caractérisé en ce qu'il comporte une étape intermédiaire consistant, avant l'étape d'intervention sur le faisceau, à soumettre le faisceau à une surpression et/ou à une augmentation de température par rapport à la température ambiante, de façon à le faire se dilater.10.- Method according to one of claims 8 or 9 characterized in that it comprises an intermediate step consisting, before the step of intervention on the beam, to subject the beam to an overpressure and / or an increase of temperature relative to the ambient temperature, so as to make it expand.
11.- Procédé suivant la revendication 10 caractérisé en ce que, avant l'application au faisceau (3) de ladite surpression et/ou de ladite augmentation de température, on dispose autour de celui-ci un dispositif limiteur de son diamètre suivant l'une des revendications 4 ou 5.11. A process according to claim 10 characterized in that, before the application to the beam (3) of said overpressure and / or said temperature increase, there is disposed around it a limiting device of its diameter according to the one of claims 4 or 5.
12.- Procédé suivant l'une des revendications 8 à 11 caractérisé en ce qu'il consiste à réaliser le faisceau (3) de façon qu'il soit déformable sous l'effet d'une différence de pression entre le faisceau et l'enceinte et à lui donner un diamètre externe inférieur au diamètre interne de l'enveloppe (1) et à appliquer au faisceau des surpressions et/ou des dépressions périodiques afin de modifier son diamètre externe. 12.- A method according to one of claims 8 to 11 characterized in that it consists in producing the beam (3) so that it is deformable under the effect of a pressure difference between the beam and the enclosure and to give it an external diameter smaller than the internal diameter of the casing (1) and to apply to the beam of the overpressures and / or periodic depressions in order to modify its external diameter.
PCT/FR2005/002058 2004-08-09 2005-08-09 Deformable exchanger WO2006021674A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL05796036T PL1784613T3 (en) 2004-08-09 2005-08-09 Intervention method on a heat exchanger
EP05796036A EP1784613B1 (en) 2004-08-09 2005-08-09 Intervention method on a heat exchanger
AT05796036T ATE464523T1 (en) 2004-08-09 2005-08-09 INTERVENTION METHOD FOR A HEAT EXCHANGER
DE602005020641T DE602005020641D1 (en) 2004-08-09 2005-08-09 Intervention procedure for a heat exchanger
US11/659,615 US20080073064A1 (en) 2004-08-09 2005-08-09 Deformable Exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0408753A FR2874080A1 (en) 2004-08-09 2004-08-09 DEFORMABLE EXCHANGER
FR0408753 2004-08-09

Publications (1)

Publication Number Publication Date
WO2006021674A1 true WO2006021674A1 (en) 2006-03-02

Family

ID=34949843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2005/002058 WO2006021674A1 (en) 2004-08-09 2005-08-09 Deformable exchanger

Country Status (8)

Country Link
US (1) US20080073064A1 (en)
EP (1) EP1784613B1 (en)
AT (1) ATE464523T1 (en)
DE (1) DE602005020641D1 (en)
ES (1) ES2344357T3 (en)
FR (1) FR2874080A1 (en)
PL (1) PL1784613T3 (en)
WO (1) WO2006021674A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101461701B1 (en) * 2007-12-11 2014-11-13 알파 라발 코포레이트 에이비 A spiral heat exchanger

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103765154B (en) * 2011-05-20 2015-12-02 Equitec控股公司 For carrying out the method for heat exchange, removable heat exchange cassette and heat-exchange system between heat-exchange fluid and perishable farm products fluid
FR2982662B1 (en) 2011-11-15 2014-01-03 Faurecia Sys Echappement SPIRAL-SHAPED EXCHANGER AND METHOD OF MANUFACTURING SUCH EXCHANGER
FI20135362A (en) 2013-04-12 2014-10-13 Vahterus Oy Procedure for cleaning a plate heat exchanger and plate heat exchanger
JP7303647B2 (en) * 2019-03-20 2023-07-05 株式会社Subaru spiral heat exchanger
KR20220027562A (en) * 2020-08-27 2022-03-08 엘지전자 주식회사 Heat exchanger

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2007386A1 (en) * 1970-02-18 1971-09-02 Union Rheinische Braunkohlen Heat exchanger for strongly corrosive medium
FR2096719A2 (en) * 1969-12-22 1972-02-25 Jouet Etienne Heat exchanger - with easily accessible coil and minimal thermal distortion
US3823458A (en) * 1968-12-27 1974-07-16 E Jouet Method of manufacturing a spirally wound heat exchanger
US4402361A (en) * 1980-08-29 1983-09-06 Inquimet Sociedad Anonima Industrial Comercial Y Agraria Heat exchanger
DE19810185C1 (en) * 1998-03-10 1999-10-21 Renzmann Und Gruenewald Gmbh Spiral flow heat exchanger
FR2811068A1 (en) * 2000-06-29 2002-01-04 Pierre Cantau Wine heating-cooling container heat exchanger has pair of spaced plates with gap forming one heat exchange circuit and space between spirally wound plates forming second circuit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3823458A (en) * 1968-12-27 1974-07-16 E Jouet Method of manufacturing a spirally wound heat exchanger
FR2096719A2 (en) * 1969-12-22 1972-02-25 Jouet Etienne Heat exchanger - with easily accessible coil and minimal thermal distortion
DE2007386A1 (en) * 1970-02-18 1971-09-02 Union Rheinische Braunkohlen Heat exchanger for strongly corrosive medium
US4402361A (en) * 1980-08-29 1983-09-06 Inquimet Sociedad Anonima Industrial Comercial Y Agraria Heat exchanger
DE19810185C1 (en) * 1998-03-10 1999-10-21 Renzmann Und Gruenewald Gmbh Spiral flow heat exchanger
FR2811068A1 (en) * 2000-06-29 2002-01-04 Pierre Cantau Wine heating-cooling container heat exchanger has pair of spaced plates with gap forming one heat exchange circuit and space between spirally wound plates forming second circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101461701B1 (en) * 2007-12-11 2014-11-13 알파 라발 코포레이트 에이비 A spiral heat exchanger

Also Published As

Publication number Publication date
EP1784613B1 (en) 2010-04-14
DE602005020641D1 (en) 2010-05-27
ES2344357T3 (en) 2010-08-25
US20080073064A1 (en) 2008-03-27
PL1784613T3 (en) 2010-09-30
FR2874080A1 (en) 2006-02-10
ATE464523T1 (en) 2010-04-15
EP1784613A1 (en) 2007-05-16

Similar Documents

Publication Publication Date Title
EP1784613B1 (en) Intervention method on a heat exchanger
WO1994016272A1 (en) Heat exchanger element and method and device for producing same
FR2468823A1 (en) JOINT FOR TUBES FOR THE PETROLEUM INDUSTRY
FR2844331A1 (en) PROCESS FOR PRODUCING A SEALED TUBULAR JOINT WITH PLASTIC EXPANSION
CA3046735A1 (en) Reactor for the hydrothermal oxidation treatment of an organic material in a reaction medium
EP0192506B1 (en) Fluid heater, especially a sanitary hot water storage heater
EP1532407A1 (en) Condensing heat exchanger with double bundle of tubes
FR2920268A1 (en) MILK TRANSFER FACILITY FROM A TRAINING MACHINE UNTIL A STORAGE TANK
FR2469667A1 (en) Water heater energy source conversion system - uses interspace(s) between condenser tube and sheath tube filled with thermal conductive material
FR2631434A1 (en) CAP FOR HEAT EXCHANGER TUBE
EP0123599B1 (en) Dismountable fastening device for an internal structure in an envelope such as a conduit or a recipient
EP3082880B1 (en) Thermal-treatment vessel for a liquid contaminated by pathogenic agents, decontamination facility comprising such a vessel and associated decontamination method
BE883735A (en) TUBE FOR COIL OF WIRE, OF LENGTH TYPE VARIABLE IN AXIAL DIRECTION
EP0451066A1 (en) Cooking steam generator with drain device
EP0173602A1 (en) Emergency heat exchanger for cooling the primary fluid of a nuclear reactor, and method of assembling this heat exchanger
FR2811068A1 (en) Wine heating-cooling container heat exchanger has pair of spaced plates with gap forming one heat exchange circuit and space between spirally wound plates forming second circuit
EP0552122A1 (en) Heat-exchanger
FR3121845A1 (en) Decontamination installation and associated process
EP0059941A2 (en) Method of evaporating a pure liquid
EP4086555B1 (en) Low maintenance heat exchange device
FR2680566A1 (en) Plate exchanger
FR2811069A1 (en) Dual function cooling-heating container for wine has standard evaporator-condenser and dual heat exchangers
FR2817332A1 (en) Tubular coil for heat exchanger consists of two horizontal spirals, each connected to its own vertical connecting pipe and linked by connecting section, coils being connected to vertical pipes on their outside or inside surface
FR2703767A1 (en) Heat exchanger having a bundle of closely spaced tubes and a boiler thus equipped
BE481338A (en)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2005796036

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 2005796036

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 11659615

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 11659615

Country of ref document: US