EP0740767B1 - Wärmetauscher für kontaminierte flüssigkeit - Google Patents

Wärmetauscher für kontaminierte flüssigkeit Download PDF

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Publication number
EP0740767B1
EP0740767B1 EP95902175A EP95902175A EP0740767B1 EP 0740767 B1 EP0740767 B1 EP 0740767B1 EP 95902175 A EP95902175 A EP 95902175A EP 95902175 A EP95902175 A EP 95902175A EP 0740767 B1 EP0740767 B1 EP 0740767B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
calender
connector
bellows
fluid
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.)
Expired - Lifetime
Application number
EP95902175A
Other languages
English (en)
French (fr)
Other versions
EP0740767A1 (de
Inventor
François Noel REMY
Patrick Grandclement
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.)
Electricite de France SA
Original Assignee
Electricite de France 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 Electricite de France SA filed Critical Electricite de France SA
Publication of EP0740767A1 publication Critical patent/EP0740767A1/de
Application granted granted Critical
Publication of EP0740767B1 publication Critical patent/EP0740767B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F28F9/0236—Header boxes; End plates floating elements
    • F28F9/0239—Header boxes; End plates floating elements floating header boxes
    • 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
    • F28D7/16—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 arranged in parallel spaced relation
    • F28D7/1607—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 arranged in parallel spaced relation with particular pattern of flow of the heat exchange media, e.g. change of flow direction
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0054—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for nuclear applications

Definitions

  • the present invention relates to devices heat exchange and especially those intended to cool a hot fluid that has been contaminated with substances radioactive and coming out of a reactor nuclear.
  • This type of device consists of a first heat exchanger, generally called heat exchanger intermediate heat, which performs a first exchange of heat, between the hot and contaminated fluid leaving the reactor and a first coolant, and a second heat exchanger which performs a second exchange of heat between the first coolant and a second coolant, the latter being discharged outside.
  • One of the main goals of the designers of nuclear power plants is to make the heat exchanger intermediate as mechanically resistant as possible constraints imposed on it, due to differences between deformations of circulation tubes coolant and those of the radiator grille the exchanger, traversed by the hot fluid.
  • a bellows and a wall are provided.
  • deformable (French patents N ° 712 359 and No. 1286722) in the intermediate heat exchanger, which have the function of absorbing the deformations mentioned above.
  • US-A patent No. 3850231 proposes a device having an intermediate heat exchanger in which are provided with two bellows which the hot fluid must cross before you can contaminate the fluid cooling and a means, housed in the defined closed space by the two bellows, the grille and the floating head, to detect leakage of hot fluid through the first bellows.
  • French patent FR-A-1286722 and US-A-3850231 actually improve the resistance to mechanical deformation due to expansion by introducing a bellows which collects these deformations.
  • sealing against hot contaminated fluid is reduced by the fact that the hot contaminated fluid is in direct contact with the bellows through which it can flee more easily.
  • the present invention relates to a device heat exchange which has characteristics of mechanical resistance to deformations due to the gradient of temperatures which are as good as those of the exchangers of the prior art and which, while comprising only one heat exchanger, has sealing characteristics significantly improved, so this exchange device heat, to a single heat exchanger, can be placed in backup circuits of a nuclear reactor for cool the contaminated hot fluid leaving the reactor enclosure by a fluid cooling, directly from the environment outdoor, including in nuclear power plants old ones lacking space to accommodate a device for two exchangers.
  • the heat exchanger designed according to the invention includes the features of claim 1.
  • the bellows is closer along the axis of the grille of the welded and crimped tubular plate grille as from the top of the floating head.
  • the heat exchanger is more waterproof and more mechanically resistant than those of the prior art, and in particular, that those according to FR-A-1286722 and US-A-3850231.
  • connection associated with the bellows is the same side of the grille as the fluid inlet fitting hot, in particular, on the same generator of the grille. It follows that the bellows is close to the as immediate as possible from the point of the contact zone hot fluid-tubular plate where the gradient of temperatures is maximum. By placing the bellows as close as possible from this point on the plate, we make sure even greater efficiency of the bellows to collect deformations.
  • the sealing and mechanical resistance of the heat exchanger according to the invention allow it to be used in a circuit rescue from an enclosure of a nuclear reactor which, in the in the event of an accident, cools the hot contaminated fluid leaving the enclosure by a cooling fluid directly pourable outside.
  • the heat exchanger shown has a grille 1 comprising a bundle of tubes 2 substantially rights for the passage of the coolant.
  • This bundle of tubes 2 which is only shown partially, is mounted between tubular plates 3.
  • the tubes 2 are welded and crimped over the entire thickness of the tubular plates 3.
  • the grille 1 is terminated by a head 4 in which an inlet connection 9 (of outlet) of the coolant.
  • a head 5 is mounted floating the radiator grille 1.
  • a radiator grille is provided inlet (outlet) connection for hot contaminated fluid.
  • a connection 8 for coolant outlet (inlet) is provided on the head 5 mounted floating. Connection 8 is partly consisting of a bellows 10.
  • Connection 8 along axis ZZ ', is closer to the tube plate 3 only from the top of the floating head 5.
  • bellows 10 collects more quickly the deformations taking place in the area of connection of the tube plate with the grille, area where the temperature gradient is maximum.
  • the angle formed in a plane normal to the axis ZZ 'between the projection of the axis XX 'on the plane and the projection of the axis YY' on this same plan sucks.
  • the bellows is thus also as close as possible to the area where the gradient of temperature is maximum, which allows it to collect deformations quickly.

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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)

Claims (3)

  1. Wärmetauscher zur indirekten Wärmeübertragung zwischen einem zu kühlenden heißen, kontaminierten Fluid und einem Kühlfluid, aufweisend einen zylindrischen Mantel (1), welcher einen Behälter bildet und an einem Ende einen Kopf (4) trägt, in dem ein Einlaßstutzen (9) für das Kühlfluid angebracht ist, ein Paar in dem Behälter montierter Rohrplatten (3), von denen eine fest mit dem Mantel verbunden ist und die andere mit einer Abschlußhaube einen Schwimmkopf (5) bildet, in dem ein Auslaßstutzen (8) für das Kühlfluid sitzt, ein Bündel von im wesentlichen zueinander parallelen Rohren (2), deren beide Enden an den Rohrplatten befestigt sind, einen Stutzen (7) für den Einlaß des kontaminierten, heißen Fluids in den Behälter, der zwischen den Rohrplatten in den Mantel eingearbeitet ist, einen Stutzen (6) für den Auslaß des heißen, kontaminierten Fluids, der zwischen den Rohrplatten in den Mantel eingearbeitet ist, wobei der Stutzen (8) für den Auslaß des Kühlfluids zumindest teilweise aus einem Faltbalg (10) besteht,
    dadurch gekennzeichnet, daß die Rohre (2), die das Rohrbündel bilden, über die gesamte Dicke der Rohrplatte gebördelt und angeschweißt sind, die mit der Abschlußhaube den Schwimmkopf (5) bildet, und daß diese Rohrplatte ebenfalls auf ihrer gesamten Umfangslinie gebördelt und angeschweißt ist.
  2. Wärmetauscher nach Anspruch 1,
    dadurch gekennzeichnet, daß der Stutzen (8), der zumindest teilweise aus einem Faltbalg (10) besteht, von der Achse des Mantels aus gesehen näher bei der an den Mantel gebördelten und angeschweißten Rohrplatte liegt als beim Scheitel des Schwimmkopfs.
  3. Wärmetauscher nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß der Stutzen (8) und der Stutzen (7) auf derselben Mantellinie des Zylinders liegen.
EP95902175A 1993-05-26 1994-11-25 Wärmetauscher für kontaminierte flüssigkeit Expired - Lifetime EP0740767B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306307A FR2705769B1 (fr) 1993-05-26 1993-05-26 Echangeur de chaleur pour fluide contaminé.
PCT/FR1994/001375 WO1996017216A1 (fr) 1993-05-26 1994-11-25 Echangeur de chaleur pour fluide contamine

Publications (2)

Publication Number Publication Date
EP0740767A1 EP0740767A1 (de) 1996-11-06
EP0740767B1 true EP0740767B1 (de) 2001-02-28

Family

ID=26230356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95902175A Expired - Lifetime EP0740767B1 (de) 1993-05-26 1994-11-25 Wärmetauscher für kontaminierte flüssigkeit

Country Status (7)

Country Link
EP (1) EP0740767B1 (de)
BG (1) BG63057B1 (de)
DE (1) DE69426781D1 (de)
FR (1) FR2705769B1 (de)
RU (1) RU2145697C1 (de)
SK (1) SK91996A3 (de)
WO (1) WO1996017216A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2705769B1 (fr) * 1993-05-26 1995-08-11 Electricite De France Echangeur de chaleur pour fluide contaminé.
DE60006813T2 (de) * 2000-09-15 2004-09-23 Toyo Radiator Co., Ltd. Wärmetauscher
CN109458861B (zh) * 2018-12-18 2023-10-10 营口庆营石化设备有限公司 一种具有双重密封的浮头换热器
RU2725120C1 (ru) * 2019-09-23 2020-06-29 Общество с ограниченной ответственностью "Полесье" (ООО "Полесье") Теплообменник

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR712359A (fr) * 1931-02-28 1931-10-01 Delas Condenseurs Perfectionnement aux condenseurs à surface et appareils analogues comportant des tubes fixés rigidement à leurs deux extrémités
FR1286722A (fr) * 1961-01-20 1962-03-09 Buckley & Taylor Ltd Perfectionnements aux échangeurs de chaleur, condenseurs et analogues
US3857442A (en) * 1971-04-12 1974-12-31 Westinghouse Electric Corp Heat exchanger having a head with an integral radiation shield
US3850231A (en) * 1973-05-24 1974-11-26 Combustion Eng Lmfbr intermediate heat exchanger
FR2431346A1 (fr) * 1978-07-18 1980-02-15 British Nuclear Fuels Ltd Procede de realisation d'un faisceau tubulaire pour echangeur de chaleur, faisceau tubulaire obtenu et echangeur de chaleur le comportant
FR2705769B1 (fr) * 1993-05-26 1995-08-11 Electricite De France Echangeur de chaleur pour fluide contaminé.

Also Published As

Publication number Publication date
DE69426781D1 (de) 2001-04-05
BG63057B1 (bg) 2001-02-28
FR2705769A1 (fr) 1994-12-02
FR2705769B1 (fr) 1995-08-11
RU2145697C1 (ru) 2000-02-20
EP0740767A1 (de) 1996-11-06
BG100732A (bg) 1997-03-31
SK91996A3 (en) 1997-10-08
WO1996017216A1 (fr) 1996-06-06

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