EP0077268B1 - Wärmetauscher mit schraubenförmig angeordneten Rohren - Google Patents

Wärmetauscher mit schraubenförmig angeordneten Rohren Download PDF

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Publication number
EP0077268B1
EP0077268B1 EP19820401846 EP82401846A EP0077268B1 EP 0077268 B1 EP0077268 B1 EP 0077268B1 EP 19820401846 EP19820401846 EP 19820401846 EP 82401846 A EP82401846 A EP 82401846A EP 0077268 B1 EP0077268 B1 EP 0077268B1
Authority
EP
European Patent Office
Prior art keywords
bundle
head
heat exchanger
faces
wedge
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
Application number
EP19820401846
Other languages
English (en)
French (fr)
Other versions
EP0077268A1 (de
Inventor
Paul Landet
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.)
Creusot Loire SA
Original Assignee
Creusot Loire 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 Creusot Loire SA filed Critical Creusot Loire SA
Publication of EP0077268A1 publication Critical patent/EP0077268A1/de
Application granted granted Critical
Publication of EP0077268B1 publication Critical patent/EP0077268B1/de
Expired 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies

Definitions

  • the present invention relates to a heat exchanger composed of bundles of helical windings of tubes, such as a steam generator with convection bundles.
  • the subject of the present invention is a device for bracing and supporting the helical windings of tubes of a heat exchanger which effectively ensures radial and longitudinal immobilization in an inexpensive manner and with great ease of implementation.
  • the exchanger according to the invention comprises at least one bundle constituted by at least one helical winding of tube, and it is characterized in that it comprises a plurality of shims which are each constituted by a rod having two bearing faces parallel separated by a thickness corresponding to the spacing between two neighboring turns of said bundle so as to be inserted between said turns and by a flared head forming a wedge, said head being welded to said turns.
  • the head forms two planar and divergent faces. These faces are formed on two branches, the wedge having the shape of a Y.
  • the exchanger comprises bracing bars which are mounted longitudinally in each annular space separating two bundles nested one inside the other.
  • Figure 1 is an elevational view of a portion of the exchanger according to the invention.
  • FIG. 2 is a longitudinal section, along II-II, of the exchanger of FIG. 1.
  • the exchanger according to the invention consists of an enclosure, not shown, in which a heat-carrying gas circulates and inside which are housed bundles 1, 2 of tubes which are bathed by the gas and which channel a fluid such as water vapor.
  • the drawings show only two partially represented beams but the number of beams can be greater.
  • Each bundle 1 or 2 is composed of several helical windings 11 or 21 of tubes having the same mean winding cylinder.
  • Each winding 11 or 21 is formed of a tube 111 or 211 wound helically on the winding cylinder 12 or 22 with a sufficient pitch so that at least one intermediate winding can be accommodated between the turns of said winding.
  • the helical windings of the same mean diameter of a bundle are nested one inside the other.
  • the helices of the windings of the same winding cylinder have the same direction and their pitch is identical.
  • the bundles 1 and 2 are nested one inside the other so that the respective winding cylinders 12 and 22 of different diameters have the same axis 7.
  • Two neighboring bundles such as 1 and 2 can be made up of windings whose helices have opposite meanings. If the inner bundle 1 consists of windings whose propellers are on the right, the outer bundle 2 then consists of windings whose propellers are on the left and vice versa.
  • the exchanger comprises a plurality of shims 4 which are each inserted between two adjacent tubular turns of the same bundle.
  • each wedge 4 is therefore inserted between two turns of two helical windings.
  • Each wedge is constituted by a rod 41 having two flat and parallel faces 411 separated by a thickness which corresponds to the spacing between two neighboring turns of the same beam.
  • the bearing faces 411 are in contact with the generatrices of the two neighboring turns at minimum spacing.
  • the rod 41 is connected to a flared head 42 forming a corner.
  • This head provides two support faces 421 which are planar and symmetrical with respect to the median plane of symmetry of the rod extending parallel to the faces 411 and at equal distance from the latter. These bearing faces 421 which diverge from the rod 41 act as abutments for implementation, and are applied against the generators of two neighboring turns. This head is oriented towards the outside of the winding because the positioning of the wedge takes place from the outside.
  • the two bearing faces 421 are formed on the outer faces of two branches formed by a V-notch, these branches being symmetrical with respect to the median plane of the rod defined above.
  • the wedge thus has a Y shape.
  • the flared head 42 of the wedge has two flats 422 which are welded to the two neighboring turns, by two weld beads 5, the spacing of the two beads being greater than the thickness of the wedge .
  • the exchanger has, parallel to the longitudinal axis 7, at least one alignment of shims 4 each inserted between two neighboring turns.
  • the exchanger has three alignments of this type so that over 360 ° - that is to say that for a current interval between two turns - there are three shims marked 4.
  • the exchanger has, in each annular space between two neighboring bundles, a set of spacer bars 6. These bars are mounted longitudinally in this space to facilitate winding and ensure the relative positioning of the two neighboring bundles. These bars can support the beams.
  • Each bundle 1 or 2 could consist of a single helical tube winding.

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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 (4)

1. Wärmetauscher mit mindestens einem Bündel (1, 2) bestehend aus mindestens einer schraubenförmigen Rohrwicklung, dadurch gekennzeichnet, dass er mehrere Unterlagen (4) aufweist bestehend jeweils aus einer zwischen zwei Schraubenwindungen eingefügten Stange (41) mit zwei Parallelstützflächen (411), die durch eine dem Abstand zwischen zwei benachbarten Schraubenwindungen dieses Bündels entsprechenden Dicke (e) und durch einen trichterförmig erweiterten als Keil ausgebildeten Kopf (42) getrennt sind, wobei dieser Kopf an diese Schraubenwindungen geschweisst ist.
2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, dass der Kopf (42) zwei auseinanderlaufende Planflächen (421) bildet.
3. Wärmetauscher nach Anspruch 2, dadurch gekennzeichnet, dass die divergierenden Planflächen (421) an zwei Schenkeln angeordnet sind, wobei die Unterlage als Y ausgebildet ist.
4. Wärmetauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er in jedem kreisförmigen Raum zwischen zwei ineinandergeschachtelten Bündeln (1, 2) Längsverstrebungen umfasst.
EP19820401846 1981-10-09 1982-10-08 Wärmetauscher mit schraubenförmig angeordneten Rohren Expired EP0077268B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8119063A FR2514481A1 (fr) 1981-10-09 1981-10-09 Echangeur a enroulements helicoidaux de tubes
FR8119063 1981-10-09

Publications (2)

Publication Number Publication Date
EP0077268A1 EP0077268A1 (de) 1983-04-20
EP0077268B1 true EP0077268B1 (de) 1984-05-09

Family

ID=9262904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401846 Expired EP0077268B1 (de) 1981-10-09 1982-10-08 Wärmetauscher mit schraubenförmig angeordneten Rohren

Country Status (3)

Country Link
EP (1) EP0077268B1 (de)
DE (1) DE3260146D1 (de)
FR (1) FR2514481A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8716522D0 (en) * 1987-07-14 1987-08-19 Hick Hargreaves & Co Ltd Securing tie

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR807020A (fr) * 1935-06-12 1936-12-31 Cie Gen De Constr De Fours Dispositif de liaison étanche et élastique pour tubes formant parois de chaudières tubulaires ou d'autres appareils
BE559078A (de) * 1956-07-10
DE2921406A1 (de) * 1979-05-26 1980-12-04 Deggendorfer Werft Eisenbau Gitterrost fuer die rohre eines rohrbuendel-apparates, z.b. eines waermetauschers

Also Published As

Publication number Publication date
FR2514481B1 (de) 1983-12-02
FR2514481A1 (fr) 1983-04-15
EP0077268A1 (de) 1983-04-20
DE3260146D1 (en) 1984-06-14

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