FR2719370A1 - Corrosive fluid heat exchanger - Google Patents

Corrosive fluid heat exchanger Download PDF

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Publication number
FR2719370A1
FR2719370A1 FR9405292A FR9405292A FR2719370A1 FR 2719370 A1 FR2719370 A1 FR 2719370A1 FR 9405292 A FR9405292 A FR 9405292A FR 9405292 A FR9405292 A FR 9405292A FR 2719370 A1 FR2719370 A1 FR 2719370A1
Authority
FR
France
Prior art keywords
tubes
tube
heat exchanger
seal
exchanger body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR9405292A
Other languages
French (fr)
Inventor
Barrault Jean-Luc
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SOFATH
Original Assignee
SOFATH
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 SOFATH filed Critical SOFATH
Priority to FR9405292A priority Critical patent/FR2719370A1/en
Publication of FR2719370A1 publication Critical patent/FR2719370A1/en
Pending legal-status Critical Current

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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/187—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding at least one of the parts being non-metallic, e.g. heat-sealing plastic elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/022—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of two or more media in heat-exchange relationship being helically coiled, the coils having a cylindrical configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
    • F28F19/04—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of rubber; of plastics material; of varnish
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The heat exchanger has an exchanger housing traversed by one or more tubes. The interior tubes are formed by a metallic section (22) and a plastics covering (23).The tubes are each sealed by a weld (24) where the tube passes through the heat exchanger body. Alternatively, there can be an O-ring clamped by a plug.

Description

La présente invention concerne un dispositif permettant de réaliser un échangeur de chaleur entre deux fluides dont un peut être très corrosif, le circuit véhiculant ce fluide corrosif étant insensible à la corrosion. The present invention relates to a device for producing a heat exchanger between two fluids, one of which can be very corrosive, the circuit carrying this corrosive fluid being insensitive to corrosion.

On connait déjà les échangeurs multitubulaires constitués de plusieurs tube droits ou en forme d'épingle, en métal inoxydable, et dont l'enveloppe extérieure est en métal inoxydable ou en matière plastique. We already know multitubular exchangers made up of several straight or pin-shaped tubes, made of stainless metal, and whose outer casing is made of stainless metal or plastic.

On connait déjà les échangeurs co-axiaux constitués de tubes de grande longueur enroulés avec le tube extérieur et réalisés en tube inoxydable ou tubes en matière plastique, ou entièrement en matière plastique. There are already known co-axial exchangers consisting of very long tubes wound with the outer tube and made of stainless tube or plastic tubes, or entirely of plastic.

Ces échangeurs présentent l'inconvénient de ne pas résister à certains agents corrosifs pour les parties métalliques ou l'inconvénient de ne pas résister à la pression sous température pour la partie en matière plastique. These exchangers have the drawback of not resisting certain corrosive agents for the metal parts or the drawback of not resisting the pressure under temperature for the plastic part.

C'est d'une manière générale un but de l'invention de fournir un dispositif qui ne présente pas les inconvénients des échangeurs connus et décrits ci-dessus. It is generally an object of the invention to provide a device which does not have the drawbacks of the exchangers known and described above.

C'est en particulier un but de l'invention de fournir un dispositif permettant de réaliser un échangeur dont un circuit résiste à la pression sous haute température et dont l'autre circuit est totalement insensible à la corrosion due aux agents chimiques ou aux courants vagabonds ou permet d'utiliser un fluide de qualité alimentaire. It is in particular an object of the invention to provide a device making it possible to produce an exchanger, one circuit of which resists pressure under high temperature and the other circuit of which is completely insensitive to corrosion due to chemical agents or stray currents. or allows the use of a food grade fluid.

Le dispositif selon l'invention est constitué pour le premier fluide, d'un tube métallique recouvert de matière plastique autour duquel circule le deuxième fluide contenu dans une enveloppe en matière plastique. Aux extrémités de l'échangeur, l'étanchéité entre le revêtement plastique du tube intérieur et le tube extérieur est réalisée par plusieurs moyens décrits ci-dessous. The device according to the invention consists, for the first fluid, of a metal tube covered with plastic material around which the second fluid contained in a plastic envelope circulates. At the ends of the exchanger, the seal between the plastic coating of the inner tube and the outer tube is achieved by several means described below.

La figure 1 représente en coupe le dispositif selon l'invention. Figure 1 shows in section the device according to the invention.

La figure 2 représente un moyen d'étanchéité. Figure 2 shows a sealing means.

La figure 3 représente un autre moyen d'étanchéité. Figure 3 shows another sealing means.

La figure 4 représente une variante. Figure 4 shows a variant.

La figure 5 représente le montage de plusieurs joints d'étanchéité.  Figure 5 shows the mounting of several seals.

La figure 6 représente l'enroulement en serpentin. Figure 6 shows the coil winding.

Le dispositif représenté sur la figure 1 comporte un corps d'échangeur 1 comportant un orifice d'entrée 2 et un orifice de sortie 3 du fluide primaire. Le corps d'échangeur 1 est traversé longitudinalement par des tubes 5 et 6 véhiculant le fluide secondaire. Le nombre de ces tubes décrits ici avec les repères 5 et 6 peut varier entre un et plusieurs centaines. L'étanchéité entre le fond 4 du corps d'échangeur 1 est réalisée par la jonction 7 qui est soit une soudure, soit un joint mécanique de type presse étoupe. The device shown in FIG. 1 comprises a heat exchanger body 1 comprising an inlet orifice 2 and an outlet orifice 3 for the primary fluid. The exchanger body 1 is traversed longitudinally by tubes 5 and 6 carrying the secondary fluid. The number of these tubes described here with the references 5 and 6 can vary between one and several hundred. The seal between the bottom 4 of the exchanger body 1 is produced by the junction 7 which is either a weld or a mechanical seal of the cable gland type.

Le dispositif représenté sur la figure 2 est un détail du tube 22 véhiculant le fluide secondaire. Ce tube 22 est recouvert, par exemple par extrusion à chaud, d'une matière plastique 23 protégeant le tube métallique 22 de la corrosion. The device shown in Figure 2 is a detail of the tube 22 conveying the secondary fluid. This tube 22 is covered, for example by hot extrusion, with a plastic material 23 protecting the metal tube 22 from corrosion.

Le tube 22 est métallique pour résister à la pression du fluide qu'il véhicule. Le tube 22 et son revêtement 23 traverse le fond 21 du corps d'échangeur. Une soudure 24 assure l'étanchéité du corps d'échangeur.The tube 22 is metallic to resist the pressure of the fluid which it carries. The tube 22 and its coating 23 crosses the bottom 21 of the exchanger body. A weld 24 seals the exchanger body.

La figure 3 représente un autre moyen pour réaliser l'étanchéité entre le corps 31 et le ou les tubes 32. Ce moyen est composé d'un joint 33 par exemple torique, placé dans un lamage 34. La pièce 35 entrant dans le lamage 34, assure la déformation du joint 33 qui vient ainsi se serrer autour du tube 32 et au fond du lamage 34. La pièce 35 est serrée par des moyens de pression 36, par exemple des vis. FIG. 3 represents another means for sealing between the body 31 and the tube or tubes 32. This means consists of a seal 33, for example an O-ring, placed in a counterbore 34. The part 35 entering the counterbore 34 , ensures the deformation of the seal 33 which is thus tightened around the tube 32 and at the bottom of the counterbore 34. The part 35 is tightened by pressure means 36, for example screws.

La figure 4 représente le moyen pour réaliser simultanément l'étanchéité sur plusieurs tubes 48. Le corps d'échangeur 41 et sa sortie 42 de fluide primaire, est terminé par un embout 44 étanché grâce au joint 43. Des joints 45 reposant au fond de lamages sont pressés par la pièce 46, elle même serrée par l'écrou 47. La déformation des joints 45 assure l'étanchéité entre le fond de corps d'échangeur 44 et les tubes 48. FIG. 4 represents the means for simultaneously carrying out the sealing on several tubes 48. The exchanger body 41 and its outlet 42 of primary fluid, is terminated by an end piece 44 sealed by means of the seal 43. Seals 45 resting at the bottom of counterbores are pressed by the part 46, itself tightened by the nut 47. The deformation of the seals 45 provides sealing between the bottom of the exchanger body 44 and the tubes 48.

La figure 5 représente un détail de montage des joints 53 dont le nombre sur chaque tube 51 est supérieur à un de manière à augmenter la qualité de l'étanchéité entre le tube 51 et le corps d'échangeur 52. FIG. 5 represents a mounting detail of the seals 53, the number of which on each tube 51 is greater than one so as to increase the quality of the seal between the tube 51 and the exchanger body 52.

Des entretoises 54 permettent à chaque joint une déformation optimale par le serrage de la bride 55.  Spacers 54 allow each joint to be deformed optimally by tightening the flange 55.

La figure 6 représente le corps d'échangeur 65 enroulé sous forme de serpentin lorsque la longueur nécessaire à l'échange de chaleur est importante. Dans cette disposition, le fluide primaire entre par l'orifice 61 et sort par l'orifice 62 tandis que le fluide secondaire entre par l'orifice 63 et ressort par l'orifice 64. FIG. 6 represents the exchanger body 65 wound in the form of a coil when the length necessary for the heat exchange is significant. In this arrangement, the primary fluid enters through the orifice 61 and exits through the orifice 62 while the secondary fluid enters through the orifice 63 and exits through the orifice 64.

Le dispositif selon l'invention est destiné à la réalisation d'échangeurs de chaleur pour tous les domaines.  The device according to the invention is intended for the production of heat exchangers for all areas.

Claims (5)

REVENDICATIONS 1 - Dispositif d'échange de chaleur comportant un corps d'échangeur traversé par un ou plusieurs tubes, caractérisé en ce que les tubes intérieurs sont constitués d'une partie métallique 22 et d'un revêtement plastique 23. 1 - Heat exchange device comprising an exchanger body traversed by one or more tubes, characterized in that the inner tubes consist of a metal part 22 and a plastic coating 23. 2 - Dispositif selon la revendication I, caractérisé en ce que l'étanchéité des tubes 22 est assurée par une soudure 24 à la traversée de corps d'échangeur 21. 2 - Device according to claim I, characterized in that the sealing of the tubes 22 is ensured by a weld 24 at the crossing of the exchanger body 21. 3 - Dispositif d'échange de chaleur selon la revendication 1 caractérisé en ce que l'étanchéité entre le tube 32 qui traverse le corps 31 est assurée par un joint 33 déformé par la bride 35. 3 - Heat exchange device according to claim 1 characterized in that the seal between the tube 32 which passes through the body 31 is provided by a seal 33 deformed by the flange 35. 4 - Dispositif selon la revendication 3, caractérisée en ce que la bride 46 déforme simultanément plusieurs joints 45 assurant l'étanchéité autour de plusieurs tubes 48. 4 - Device according to claim 3, characterized in that the flange 46 simultaneously deforms several seals 45 ensuring the sealing around several tubes 48. 5 - Dispositif selon la revendication 3, caractérisée en ce que l'étanchéité est assurée par plusieurs joints 53 par tube, déformés par des entretoises 54 et par une bride 55.  5 - Device according to claim 3, characterized in that the seal is ensured by several joints 53 per tube, deformed by spacers 54 and by a flange 55.
FR9405292A 1994-04-28 1994-04-28 Corrosive fluid heat exchanger Pending FR2719370A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9405292A FR2719370A1 (en) 1994-04-28 1994-04-28 Corrosive fluid heat exchanger

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9405292A FR2719370A1 (en) 1994-04-28 1994-04-28 Corrosive fluid heat exchanger

Publications (1)

Publication Number Publication Date
FR2719370A1 true FR2719370A1 (en) 1995-11-03

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9405292A Pending FR2719370A1 (en) 1994-04-28 1994-04-28 Corrosive fluid heat exchanger

Country Status (1)

Country Link
FR (1) FR2719370A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864829A1 (en) * 1997-03-11 1998-09-16 Reto Schmid Process for recovering heat from exhaust gases,and manufacturing process

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755220A (en) * 1953-11-05 1956-08-22 Arthur James Reavell Improvements in or relating to heat exchangers
DE2033213A1 (en) * 1970-07-04 1972-01-13 Schorch Gmbh Heat exchanger tube seal - for electrical machine coolers comprising sealing ring in tube plate
GB2042117A (en) * 1979-01-19 1980-09-17 Sterling Drug Inc Corosion resistant joint assembly
US4461347A (en) * 1981-01-27 1984-07-24 Interlab, Inc. Heat exchange assembly for ultra-pure water
JPS61134596A (en) * 1984-12-06 1986-06-21 Toshiba Corp Heat exchanger for heat pump device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB755220A (en) * 1953-11-05 1956-08-22 Arthur James Reavell Improvements in or relating to heat exchangers
DE2033213A1 (en) * 1970-07-04 1972-01-13 Schorch Gmbh Heat exchanger tube seal - for electrical machine coolers comprising sealing ring in tube plate
GB2042117A (en) * 1979-01-19 1980-09-17 Sterling Drug Inc Corosion resistant joint assembly
US4461347A (en) * 1981-01-27 1984-07-24 Interlab, Inc. Heat exchange assembly for ultra-pure water
JPS61134596A (en) * 1984-12-06 1986-06-21 Toshiba Corp Heat exchanger for heat pump device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 10, no. 331 (M - 533)<2387> 11 November 1986 (1986-11-11) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864829A1 (en) * 1997-03-11 1998-09-16 Reto Schmid Process for recovering heat from exhaust gases,and manufacturing process

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