EP2015016A1 - Wärmetauscher für Heizbottich - Google Patents

Wärmetauscher für Heizbottich Download PDF

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Publication number
EP2015016A1
EP2015016A1 EP08159940A EP08159940A EP2015016A1 EP 2015016 A1 EP2015016 A1 EP 2015016A1 EP 08159940 A EP08159940 A EP 08159940A EP 08159940 A EP08159940 A EP 08159940A EP 2015016 A1 EP2015016 A1 EP 2015016A1
Authority
EP
European Patent Office
Prior art keywords
exchanger
configuration
sleeve
tank
shaft
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.)
Withdrawn
Application number
EP08159940A
Other languages
English (en)
French (fr)
Inventor
Jacques Giordano
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.)
Jacques Giordano Industries SA
Original Assignee
Jacques Giordano Industries SA
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 Jacques Giordano Industries SA filed Critical Jacques Giordano Industries SA
Publication of EP2015016A1 publication Critical patent/EP2015016A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0206—Heat exchangers immersed in a large body of liquid
    • F28D1/0213—Heat exchangers immersed in a large body of liquid for heating or cooling a liquid in a tank
    • 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
    • F28D7/08—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 otherwise bent, e.g. in a serpentine or zig-zag
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0132—Auxiliary supports for elements for tubes or tube-assemblies formed by slats, tie-rods, articulated or expandable rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/02—Flexible elements
    • 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 invention relates to a heat exchanger for heating a liquid contained in a tank. It applies more particularly to heat exchangers comprising at least one tube disposed in contact with the liquid to be heated and inside which circulates a heating fluid.
  • heating assemblies comprising a tank and a heat exchanger mounted integrally and indémontable in the tank.
  • These indestructible heating assemblies induce strong constraints during their design, during their assembly as well as during maintenance or repair operations. In particular, a failure of either the exchanger or the vessel usually requires complete replacement of the heater assembly.
  • heating assemblies comprising a tank and a heat exchanger removably mounted in the tank.
  • the exchanger generally comprises a single tube defining an almost closed contour or a plurality of parallel tubes forming a beam and passing through the vessel from one side.
  • exchangers are introduced into the tank through one or more openings in the tank. For each of these openings, the joining of the exchanger on the tank and the tightness of the assembly are provided by a flange. These flanges, because of the functions they provide must meet strong mechanical, physical and chemical requirements.
  • the existing assemblies sometimes have a mechanical resistance and a sealing reliability too limited. However, these characteristics are all the more sensitive that the tank is subjected to significant pressure.
  • a heat exchanger for heating a liquid contained in a tank, the exchanger comprising at least one tube in which circulates a heating fluid and in contact which the liquid is placed, the exchanger being arranged to pass alternately from an insertion configuration to an operating configuration.
  • the geometry of the structure of the exchanger is designated by configuration.
  • the geometry of the exchanger closely influences the size and distribution of the heat exchange surfaces between the reheating fluid and the liquid to be heated. Furthermore, in existing heating assemblies the geometry of the exchanger conditions the dimensions of the opening through which the latter must be introduced into the tank. The dimensions of the flange are therefore directly related to the geometry of the exchanger.
  • the invention makes it possible to decorrelate the configuration of the exchanger during insertion and that of the exchanger during operation. Indeed, the invention makes it possible to introduce the exchanger into the tank when it is in a first so-called insert configuration and then deploy it and use it in the second configuration designated operating configuration.
  • the exchanger according to the invention reduces the dimensions of the opening of the tank and at the same time the dimensions of the flange.
  • the invention makes it possible to limit the manufacturing costs of the flanges and to improve the mechanical stability as well as the tightness of the heating assembly.
  • the invention makes it possible to house an exchanger in this vessel whose operating geometry offers a range and / or a distribution of the exchange surfaces that is significantly more favorable to heat exchange than a conventional exchanger whose geometry does not vary.
  • the method comprises a step in which the exchanger is introduced into the vessel in a main insertion direction and in which, during the transition from the insertion configuration to the operating configuration, the maximum section of the vessel is increased. the exchanger in a plane transverse to the main direction of insertion.
  • the method comprises a step where a tool is used to cooperate with a deployment system carried by the exchanger to pass alternately the exchanger from the insertion configuration to the operating configuration.
  • the assembly comprises a tank 20, an exchanger 1 and a flange 30.
  • the tank 20 defines a heating chamber for the liquid to be heated.
  • the chamber is in fluid communication with liquid inlet and outlet circuits to be heated.
  • the tank 20 has an opening 21 to receive and maintain the position of the exchanger 1 in the chamber
  • the exchanger 1 is in fluid communication with a heating fluid supply circuit on the one hand and with a heating fluid discharge circuit on the other hand.
  • the circulation of a reheating fluid inside the pipes and tubes 2 allows a heat exchange between this reheating fluid and the liquid to be heated contained in the tank 20.
  • the function of the flange 30 is to seal the heating assembly and to maintain the heat exchanger 1 in the tank 20.
  • it can also be provided that it ensures the centering of the heat exchanger 1 at the level of the heat exchanger 1. of the opening.
  • the flange 30 is a conventional flange. It comprises, for example, a gasket and fastening elements which secure it to the tank 20.
  • the exchanger 1 comprises an inlet pipe 10, a plurality of tubes 2 forming a bundle and an outlet pipe 11.
  • the tubes 2 are deformable and flexible.
  • they have a corrugated structure and consist of stainless steel. They are distributed in a circular manner around a common shaft 3, the shaft 3 extending in a direction subsequently designated longitudinal direction.
  • the shaft 3 is hollow and participates in the circulation of the heating fluid in the exchanger 1. It thus forms a rigid tube 2.
  • the deployment system comprises a plurality of deployment devices sharing the same sleeve 5.
  • the deployment system is arranged so that the sliding of the sleeve 5 along the shaft 3 causes the spacing or the approximation of the rings 6 relative to the shaft 3 in a plane transverse to the longitudinal direction.
  • the tubes 2 are arranged so that when no stress is applied to them, they are arranged substantially parallel to each other and relative to the shaft 3.
  • the tubes 2 are distributed concentrically around the shaft 3 so as to define, in a plane transverse to the longitudinal direction, a circle centered on the shaft 3 and passing through each of the rings 6. This plane transverse to the longitudinal direction and containing said circle is referred to as the plane of the rings 6.
  • the sleeve 5 is longitudinally disposed in a so-called non-operating position.
  • the so-called non-operating position and the stop stop 8 are situated on either side of the plane of the rings 6.
  • the sleeve 5 is moved away from the plane of the rings 6 by a distance L and the circle formed by the rings 6 has a diameter of dimension d.
  • the direction, in the longitudinal direction, from the non-operating position to the plane of the rings 6 is designated by the following direction of deployment 12.
  • the user moves the sleeve 5 in the deployment direction 12, it causes the rotation arms 7 and the distance of the rings 6 relative to the shaft 3 in the plane of the rings 6. This displacement is represented in FIG. figure 3 .
  • the rings 6 thus exert a stress on the tubes 2 and therefore cause the elastic deformation of the latter.
  • the displacement of the sleeve 5 thus causes a variation of the geometry of the exchanger 1.
  • the exchanger 1 When the sleeve 5 is longitudinally positioned to coincide substantially with the plane of the rings 6, the exchanger 1 is then placed in an unstable equilibrium position. The rings 6 then reach their maximum spacing position relative to the shaft 3. The geometry of the exchanger 1 therefore reaches its maximum dimension in a plane transverse to the longitudinal direction.
  • the sleeve 5 When in contact with the abutment 8, the sleeve 5 is disposed in a so-called operating position shown in FIG. Figures 4a and 4b . In this operating position, the sleeve 5 is away from the plane of the rings 6 by a distance I significantly less than the distance L.
  • the exchanger 1 When the sleeve 5 is in the operating position, the exchanger 1 has a second configuration designated operating configuration.
  • the tubes 2 In this operating configuration, the tubes 2 define a circle centered on the shaft 3, passing through each of the rings 6 and whose diameter is designated operating diameter D.
  • the operating diameter D is significantly greater than the non-operating diameter d .
  • the exchanger 1 is deformed and its geometry varies alternately from the insertion configuration to the operating configuration.
  • the thermal power exchanged between the heating fluid and the liquid to be heated depends in particular on the extent of the heat exchange surfaces between this fluid and this liquid. Moreover, this thermal power depends on the distribution of these exchange surfaces, that is to say their mutual distance and their arrangement in the volume defined by the tank.
  • the increase in the diameter of the circle formed by the rings 6 and consequently the increase in the geometry of the exchanger 1 makes it possible to increase the exchange surface, the mutual distance and the distribution in the tank of the surfaces. contact between the heating fluid and the liquid to be heated.
  • the insertion configuration passage to the operating configuration makes it possible to increase the thermal power that the exchanger 1 can transmit to the liquid contained in the tank.
  • the operating position In the operating position, the force exerted by the elasticity of the tubes 2 on the sleeve 5 tends to maintain the latter firmly in contact with the stop 8. Thus, the operating position is particularly stable.
  • a modification of this position requires exerting on the sleeve 5 a force whose intensity is large enough to overcome the elastic bias exerted by the tubes 2. This force must be directed in the longitudinal direction and in one direction, designated direction of retraction 13, opposite the direction of deployment 12. This force must be applied until the sleeve 5 passes beyond the plane of the rings 6.
  • the elastic bias exerted by the tubes 2 contributes to move the sleeve 5 in the retraction direction 13 to the non-operating position.
  • the exchanger 1 can thus be positioned again in the first configuration.
  • the insertion configuration also constitutes a position of stable equilibrium since the elasticity of the tubes 2 tends to maintain the sleeve 5 in this position by opposing any displacement of the latter in the deployment direction 12.
  • the alternative passage from the insertion configuration to the operating configuration is provided by the operator by moving the sleeve 5 in the direction of deployment 12 or retraction 13.
  • a tool specially adapted for firstly cooperating with the sleeve 5 and for the other hand to facilitate the movement thereof by the operator from outside the tank may for example have a substantially rectilinear shape with an end capable of cooperating with the sleeve 5 to allow a transmission of force as well directed in the direction of deployment 12 that retraction 13 and a second end can facilitate the gripping of the tool by the operator.
  • the exchanger 1 is disassembled by carrying out the assembly process in the opposite direction.
  • the invention makes it possible to use exchangers 1 whose distribution and size of the heat exchange surfaces are particularly well suited to large heat exchange while allowing the use of flanges 30 of reduced dimensions.
  • the Applicant has identified that a large opening on part of the tank 20 and in particular on the ferrule portion is a point of considerable mechanical weakness for the heating assembly. Furthermore, she has found that the reliability of the insulation of a large diameter flange 30 substantially complicates the insulation of the heating assembly. In addition, the cost of a heating assembly increases substantially with the dimensions of the flange 30. More particularly, the applicant has observed that the manufacture of a thick flange 30 requires expensive machining processes unlike a flange. 30 of small diameter. Indeed, a flange 30 of small diameter can be made of stamped sheet. Finally, a flange 30 is often associated with a seal which has proved all the more vulnerable that it is also large diameter.
  • the invention makes it possible to improve the reliability of the seal and the insulation, as well as the mechanical strength of a heating assembly.
  • these characteristics are all the more important as the vats 20 are often subjected to significant pressures.
  • the invention makes it possible to substantially reduce the cost price of the heating assembly.
  • it allows easy assembly and disassembly of the exchanger 1 and thus allows easy maintenance of the latter and the tank 20.
  • the heating assembly can be arranged so that the main direction of insertion is an oblique direction.
  • the inlet and outlet pipes can be mutually offset. These pipes can also be reversed with respect to the first embodiment described above.
  • the same tank 20 may be intended to receive several exchangers 1 according to the invention, each of these exchangers 1 being associated with a flange 30.
  • the advantages provided by the invention are all the more appreciable as the number of flanges 30 is high.
  • the number and dimensions of the tubes 2 will be easily adapted depending on the thermal power to be exchanged between the heating fluid and the liquid to be heated.
  • an actuating mechanism may be provided for moving the exchanger 1 from the insertion configuration to the operating configuration.
  • tubes 2 are deformable but not elastic.
  • locking means arranged to selectively lock and unlock the sleeve 5 in its operating position and in its non-operating position.
  • the invention is equally appreciable for a "serpentine" type heat exchanger, the tube or tubes of which do not form a bundle but define an almost closed outline, the lines of which Inlet and outlets are carried by the same flange.
  • the size of the flanges is also conditioned by the size of the exchange surfaces and by the geometry of the exchanger.

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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)
EP08159940A 2007-07-11 2008-07-08 Wärmetauscher für Heizbottich Withdrawn EP2015016A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0756404A FR2918742B1 (fr) 2007-07-11 2007-07-11 Echangeur de chaleur pour cuve de chauffage.

Publications (1)

Publication Number Publication Date
EP2015016A1 true EP2015016A1 (de) 2009-01-14

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ID=39319683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08159940A Withdrawn EP2015016A1 (de) 2007-07-11 2008-07-08 Wärmetauscher für Heizbottich

Country Status (2)

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EP (1) EP2015016A1 (de)
FR (1) FR2918742B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9809380B2 (en) * 2013-12-12 2017-11-07 Savannah River Nuclear Solutions, Llc Heat transfer unit and method for prefabricated vessel
US9957103B2 (en) * 2013-12-12 2018-05-01 Savannah River Nuclear Solutions, Llc Heat transfer unit and method for prefabricated vessel
US10859208B2 (en) 2018-05-31 2020-12-08 Savannah River Nuclear Solutions, Llc Heat transfer unit for prefabricated vessel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1632784A (en) * 1919-03-24 1927-06-21 Robert S Blair Heat-conducting apparatus
GB2063753A (en) * 1979-11-24 1981-06-10 Ind & Overseas Securities Ltd Core extraction and insertion apparatus
DD273496A1 (de) * 1988-06-28 1989-11-15 Bauakademie Ddr Rohrbuendelwaermeuebertrager fuer behaelter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1632784A (en) * 1919-03-24 1927-06-21 Robert S Blair Heat-conducting apparatus
GB2063753A (en) * 1979-11-24 1981-06-10 Ind & Overseas Securities Ltd Core extraction and insertion apparatus
DD273496A1 (de) * 1988-06-28 1989-11-15 Bauakademie Ddr Rohrbuendelwaermeuebertrager fuer behaelter

Also Published As

Publication number Publication date
FR2918742B1 (fr) 2015-01-02
FR2918742A1 (fr) 2009-01-16

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