EP0912868A1 - Wärmetauscherausstattung für mindestens drei flüssigkeiten - Google Patents

Wärmetauscherausstattung für mindestens drei flüssigkeiten

Info

Publication number
EP0912868A1
EP0912868A1 EP97931891A EP97931891A EP0912868A1 EP 0912868 A1 EP0912868 A1 EP 0912868A1 EP 97931891 A EP97931891 A EP 97931891A EP 97931891 A EP97931891 A EP 97931891A EP 0912868 A1 EP0912868 A1 EP 0912868A1
Authority
EP
European Patent Office
Prior art keywords
plates
bundle
fluid
fluids
sealed enclosure
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.)
Granted
Application number
EP97931891A
Other languages
English (en)
French (fr)
Other versions
EP0912868B1 (de
Inventor
William Levy
Dominique Sabin
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.)
Alfa Laval Packinox SAS
Original Assignee
Packinox 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 Packinox SA filed Critical Packinox SA
Publication of EP0912868A1 publication Critical patent/EP0912868A1/de
Application granted granted Critical
Publication of EP0912868B1 publication Critical patent/EP0912868B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies
    • 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
    • F28D9/0006—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 plate-like or laminated conduits being enclosed within a pressure vessel
    • 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
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids

Definitions

  • the present invention relates to a heat exchange installation used to cool or heat a first fluid by heat exchange with at least two other fluids.
  • the heat exchange installations include heat exchangers which are generally of two types.
  • the first type of heat exchanger comprises a bundle of U-shaped tubes or a bundle of straight tubes in which one of the fluids circulates.
  • the second type of heat exchanger comprises a sealed enclosure in which is placed a bundle of plates arranged contiguously and parallel to each other.
  • the plates made of thin sheets, most often made of stainless steel, have edges with a smooth surface and a central part provided with corrugations by which they are in contact with each other and by which they delimit channels forming circuits of circulation of independent fluids.
  • This type of plate bundle heat exchanger works with various fluids such as liquids or gases or a two-phase mixture. With this type of plate heat exchanger, circulating the two fluids in the respective circuits, there is a heat exchange between these two fluids which allows to heat one of the fluids and cool the other fluid or vice versa.
  • Each plate heat exchanger consists of a sealed enclosure in which is disposed a bundle of plates delimiting two circuits, one of which is intended for the main fluid to be heated or cooled.
  • the connecting pipes between the different exchangers for the transfer of the main fluid between these exchangers constitute unnecessary and parasitic pressure drop zones and calorie loss zones which reduces the yields of the heat exchange installation. .
  • the object of the invention is to avoid the drawbacks mentioned above by proposing a compact heat exchange installation which makes it possible to reduce the pressure losses as well as the weight and the size of this installation and to increase the yields.
  • the invention therefore relates to a heat exchange installation between at least three fluids, characterized in that it comprises: - an elongated sealed enclosure,
  • the means for entering the first fluid are formed by a tube passing through the sealed enclosure and connected to a collector disposed on the inlet of the corresponding circuit of the first bundle of plates,
  • the connecting means for the circulation of the first fluid between the two bundles of plates are formed by a tube connected by one of its ends to a manifold disposed on the outlet of the corresponding circuit of the first bundle of plates and by the other of its ends to a collector arranged on the input of the corresponding circuit of the second bundle of plates,
  • the means for leaving the first fluid are formed by a tube passing through the sealed enclosure and connected to a collector disposed on the outlet of the corresponding circuit of the second bundle of plates,
  • the means for entering the second fluid of the first bundle of plates are formed by a tube passing through the sealed enclosure and connected to a manifold disposed on the input of the corresponding circuit of the first bundle of plates,
  • the means for outputting the second fluid from the first bundle of plates are formed by a tube passing through the sealed enclosure and connected to a collector disposed on the output of the corresponding circuit of the first bundle of plates,
  • the inputs of the circulation circuits of the first fluid and of the second fluid into the first bundle of plates are located on the same end of said first bundle of plates for a co-current circulation of said fluids
  • the inputs of the circuits for circulation of the first fluid and of the second fluid in the first bundle of plates are located respectively on an opposite end of said first bundle of plates for a counter-current circulation of said fluids
  • the means for entering the third fluid are formed by a tube opening into the sealed enclosure and communicating with the inlet of the corresponding circuit of the second bundle of plates,
  • the means for outputting the third fluid are formed by a tube passing through the sealed enclosure and connected to a collector disposed on the output of the corresponding circuit of the second bundle of plates, the inputs of the circuits for circulation of the first fluid and of the third fluid in the second bundle of plates are located on the same end of said second bundle of plates for a co-current circulation of said fluids,
  • the inputs of the circuits for circulation of the first fluid and of the third fluid in the second bundle of plates are located respectively on an opposite end of said second bundle of plates for a counter-current circulation of said fluids
  • the means for holding the first bundle of plates are arranged at the outlet of the first fluid from said bundle of plates and comprise, on the one hand, two plates having substantially the shape of a half-disc, linked to the corresponding collectors and , on the other hand, two plates having substantially the shape of a half-disc, linked to the internal wall of the sealed enclosure, said plates being in abutment one on the other and allowing expansion of said first bundle of plates towards the inlet of the first fluid,
  • the means for holding the second bundle of plates are arranged at the entry of the first fluid into said bundle of plates and comprise, on the one hand, two plates having substantially the shape of a half-disc, linked to the collectors correspondents and, on the other hand, two plates having substantially the shape of a half-disc, linked to the internal wall of the sealed enclosure, said plates being in abutment one on the other and allowing expansion of said second bundle of plates towards the outlet of the first fluid.
  • FIG. 1 is a schematic view in partially cutaway perspective of a heat exchange installation according to the invention
  • FIG. 2 is a schematic view in longitudinal section of the heat exchange installation according to the invention
  • FIG. 2 is a sectional view along line 3-3 of FIG. 2,
  • FIG. 4 is a schematic cross-sectional view of a portion of the first bundle of plates of the heat exchange installation according to the invention
  • FIG. 5 is a diagrammatic view in cross section of a portion of the second bundle of plates of the heat exchange installation according to the invention
  • - Fig. 6 is a view in longitudinal section and on a larger scale showing the means for holding the bundles of plates in the sealed enclosure.
  • FIGs. 1 to 3 there is shown an installation intended to carry out a heat exchange between a first fluid A constituted by a liquid or a gas or biphasic mixture and at least two fluids B and C each constituted by a liquid or a gas or a biphasic mixture .
  • This heat exchange installation is intended for example to cool the first fluid A with fluids B and C or to heat this first fluid A.
  • the first fluid A is cooled by two fluids B and C respectively.
  • this first fluid A can be cooled by more than two other fluids.
  • the heat exchange installation shown in Figs. 1 to 3 comprises a sealed enclosure 1 of elongated shape and of circular section, for example.
  • This sealed enclosure 1 is provided with organs support, not shown, intended to rest on a receiving surface and this sealed enclosure 1 is preferably arranged vertically.
  • the bundles of plates 10 and 40 are separated from each other.
  • the first bundle of plates 10 has a generally parallelepiped shape and constitutes the exchange surface necessary for the heat transfer between the fluids A and B. As shown in FIG. 4, the first bundle of plates 10 is formed by a stack of thin metal plates 11 and for example of stainless steel, provided with corrugations 12.
  • the plates 11 of the plate bundle 10 are parallel to each other and are in contact with each other at the level of the corrugations 12 so as to delimit channels forming independent fluid circulation circuits.
  • the plates 11 form between them a first longitudinal circuit for the first fluid A, extending over the entire length of the bundle of plates 10 and a second longitudinal circuit b for the second fluid B, also extending over the entire length of the bundle of plates 10.
  • the second bundle of plates 40 has a generally parallelepiped shape and constitutes the exchange surface necessary for the heat transfer between the fluids A and C.
  • this second bundle of plates 40 is formed by a stack of metal plates 41, of small thickness and for example of stainless steel, provided with corrugations 42.
  • the plates 41 of the plate bundle 40 are parallel to each other and are in contact with each other at the level of the corrugations 42 so as to delimit channels forming independent fluid circulation circuits.
  • These plates 41 form between them a first longitudinal circuit for the first fluid A, extending over the entire length of the bundle of plates 40 and a second longitudinal circuit c for the third fluid C, also extending over the entire length of the plate bundle 40.
  • the heat exchange installation also includes:
  • the means for entering the first fluid A into the circuit a first bundle of plates 10 are formed by a tube 13 passing in leaktight manner enclosure 1 and connected to a manifold 14 disposed on the inlet of circuit a of the first bundle of plates 10.
  • the connecting means for the circulation of the first fluid A between the two bundles of plates 10 and 40 are formed by a tube 15 connected by one of its ends to a manifold 16 disposed on the outlet of the circuit a of the first bundle of plates 10 and by the other of its ends to a collector 43 placed on the input of the circuit a of the second bundle of plates 40.
  • the means for outputting the first fluid A from the second bundle of plates 40 are formed by a tube 44 passing in leaktight manner through the enclosure 1 and connected to a manifold 45 disposed on the outlet of the circuit a of said second bundle of plates 40.
  • the means of entry of the second fluid B into the first bundle of plates 10 are formed by a tube 17 passing in leaktight manner the enclosure 1 and connected to a manifold 18 disposed on the inlet of circuit b of said first bundle of plates 10 .
  • the means for outputting the second fluid B from the first bundle of plates 10 are formed by a tube 19 passing in leaktight manner through the enclosure 1 and connected to a manifold 20 disposed on the outlet of the circuit b of said first bundle of plates 10.
  • the circulation of fluids A and B in the first bundle of plates 10 is against the current and, consequently, the inlet for fluid A and the outlet for fluid B are located on the same end of the bundle of plates 10 and the outlet of the fluid A and the inlet of the fluid B are located on the opposite end of the said bundle of plates 10.
  • the circulation of the fluids A and B in the first bundle of plates 10 can be co-current and in this case the inlets of the fluids A and B are located on the same end of said first bundle of plates 10.
  • outlets of the fluids A and B are also located on the same end of this first bundle of plates 10.
  • the means of entry of the third fluid C into the second bundle of plates 40 are formed by a tube 46 opening into the sealed enclosure 1 and communicating with the inlet of the circuit c of said second bundle of plates 40.
  • the third fluid C therefore circulates in circuit c of the second bundle of plates 40 and is also diffused inside the sealed enclosure 1 so as to pressurize said bundles of plates 10 and 40.
  • the means for outputting the third fluid C from the second bundle of plates 40 are formed by a tube 47 passing in leaktight manner through the enclosure 1 and connected to a manifold 48 disposed at the outlet of the circuit c of said second bundle of plates 40.
  • the circulation of fluids A and C in the second bundle of plates 40 is against the current so that the inlets of fluids A and C are located on opposite ends of the second bundle of plates 40.
  • the circulation of the fluids A and C in the second bundle of plates 40 can be co-current and in this case the inflows of the fluids
  • a and C are located on the same end of the second bundle of plates 40.
  • the means for holding the first bundle of plates 10 are arranged at the outlet of the fluid A from this bundle of plates 10 and the means for holding the second bundle of plates 40 are arranged at the entry of fluid A into this bundle of plates 40.
  • the means for holding the first bundle of plates 10 comprise two plates, respectively 25 and 26, having substantially the shape of a half-disc.
  • These plates 25 and 26 include stiffening spacers 27 welded to said plates.
  • the plates 25 and 26 and the spacers 27 are connected to the collectors 16 and 18, for example by welding.
  • the means for holding the first bundle of plates 10 also comprise two plates, respectively 28 and 29, having substantially the shape of a half-disc.
  • These plates 28 and 29 also include stiffening spacers 30 fixed to said plates by welding.
  • the plates 28 and 29 are fixed by means of their external edges to the internal wall of the sealed enclosure 1, for example by welding.
  • the plates 25 and 26 support the first bundle of plates 10 and rest on the plates 28 and 29 integral with the sealed enclosure 1 which allows expansion of the first bundle of plates 10 towards the inlet of the first fluid A, c 'is to say towards the end of the sealed enclosure 1.
  • the means for holding the second bundle of plates 40 comprise two plates, respectively 50 and 51, having substantially the shape of a half-disc and with stiffening spacers 52.
  • the plates 50 and 51 as well as the spacers 52 are fixed to the collectors 43 and 48, for example by welding.
  • the means for holding the second bundle of plates 40 also comprise two plates, respectively 53 and 54, having substantially the shape of a half-disc and provided with stiffening spacers 55 fixed on said plates 53 and 54 by welding.
  • the plates 50 and 51 secured to the second bundle of plates 40 rest on the plates 53 and 54 secured to the sealed enclosure 1 which allows the second bundle of plates 40 to expand towards the outlet of the first fluid A from this second bundle of plates 40, that is to say towards the end of the sealed enclosure 1.
  • the bundles of plates 10 and 40 can expand mainly in two opposite directions thereby reducing any stress on the connecting pipe 15 between these two bundles of plates 10 and 40.
  • the first fluid A to be heated or cooled is introduced through the pipe 13 and through the manifold 14 into the circuit a of the first bundle of plates 10.
  • This fluid A circulates in the circuit a over the entire length of the first bundle of plates 10.
  • the second fluid B is introduced via the tubing 17 and the manifold 18 into circuit b of the first bundle of plates 10.
  • This fluid B circulates over the entire length of the first bundle of plates 10 and leaves the heat exchange installation via the manifold 20 and the outlet pipe 19.
  • the third fluid C leaves the circuit c of the second bundle of plates 40 through the manifold 48 and the outlet pipe 47.
  • the fluid A thus cooled or heated leaves the heat exchange installation via the manifold 45 and the tubing 44.
  • the envelope constituting the sealed enclosure 1 provides airtightness to the atmosphere and allows external pressurization of the bundles of plates 10 and 40 by the fluid C which is introduced into the sealed enclosure 1.
  • the heat exchange installation according to the invention makes it possible to obtain a large differential between the inlet temperature of the main fluid and its outlet temperature and therefore to increase the yields, while reducing the overall size by 1 ' installation.

Landscapes

  • 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)
  • Physical Or Chemical Processes And Apparatus (AREA)
EP97931891A 1996-07-19 1997-07-07 Wärmetauscher für mindestens drei flüssigkeiten Expired - Lifetime EP0912868B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9609115 1996-07-16
FR9609115A FR2751402B1 (fr) 1996-07-19 1996-07-19 Installation d'echange thermique entre au moins trois fluides
PCT/FR1997/001225 WO1998003831A1 (fr) 1996-07-19 1997-07-07 Installation d'echange thermique entre au moins trois fluides

Publications (2)

Publication Number Publication Date
EP0912868A1 true EP0912868A1 (de) 1999-05-06
EP0912868B1 EP0912868B1 (de) 2001-06-20

Family

ID=9494265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97931891A Expired - Lifetime EP0912868B1 (de) 1996-07-19 1997-07-07 Wärmetauscher für mindestens drei flüssigkeiten

Country Status (8)

Country Link
US (1) US6089313A (de)
EP (1) EP0912868B1 (de)
JP (1) JP4024862B2 (de)
AT (1) ATE202414T1 (de)
AU (1) AU3548397A (de)
DE (1) DE69705311T2 (de)
FR (1) FR2751402B1 (de)
WO (1) WO1998003831A1 (de)

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Also Published As

Publication number Publication date
JP2000514914A (ja) 2000-11-07
EP0912868B1 (de) 2001-06-20
FR2751402A1 (fr) 1998-01-23
FR2751402B1 (fr) 1998-10-09
DE69705311T2 (de) 2001-11-22
JP4024862B2 (ja) 2007-12-19
DE69705311D1 (de) 2001-07-26
AU3548397A (en) 1998-02-10
US6089313A (en) 2000-07-18
WO1998003831A1 (fr) 1998-01-29
ATE202414T1 (de) 2001-07-15

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