EP0135668B1 - Echangeur de chaleur avec un passage de gaz - Google Patents

Echangeur de chaleur avec un passage de gaz Download PDF

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Publication number
EP0135668B1
EP0135668B1 EP84105684A EP84105684A EP0135668B1 EP 0135668 B1 EP0135668 B1 EP 0135668B1 EP 84105684 A EP84105684 A EP 84105684A EP 84105684 A EP84105684 A EP 84105684A EP 0135668 B1 EP0135668 B1 EP 0135668B1
Authority
EP
European Patent Office
Prior art keywords
tubes
flue
wall
bent
exchanger according
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
EP84105684A
Other languages
German (de)
English (en)
Other versions
EP0135668A2 (fr
EP0135668A3 (en
Inventor
Heinz Ammann
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.)
Trasformazione Societaria sulzer AG
Original Assignee
Gebrueder Sulzer AG
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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0135668A2 publication Critical patent/EP0135668A2/fr
Publication of EP0135668A3 publication Critical patent/EP0135668A3/de
Application granted granted Critical
Publication of EP0135668B1 publication Critical patent/EP0135668B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
    • F22B37/148—Tube arrangements for the roofs

Definitions

  • the invention relates to a heat exchanger with a gas flue, which consists of wall tubes which extend essentially parallel to its longitudinal axis, are gas-tightly welded to one another and through which a medium flows, and which at least at one end has pipes which are also gas-tightly welded to one another and through which a medium flows is completed, which run transverse to the longitudinal axis of the throttle cable.
  • This object is achieved according to the invention in that all of the pipes terminating at one end of the gas train are connected on the medium side to at least 80% of the wall pipes of the gas train.
  • This solution in which at least 80% of the medium flowing through the wall pipes reaches the entire pipe end of the throttle cable, leads to surprisingly simple designs, for practically all cross-sectional shapes of the gas cable. Any differences in pipe lengths are much smaller with the new solution than with the known heat exchanger.
  • a vertical throttle cable 1 of a heat exchanger for example a steam generator, has the shape of a straight prism with an octagonal cross section.
  • Each of the eight sides of the prism 1 consists of tubes 15 which run in the longitudinal direction of the throttle cable and which are welded to one another in a gas-tight manner via webs 6 and form the boundary walls of the throttle cable.
  • the tubes 15 are bent inwards by 90 ° and form essentially horizontal tubes 5. These tubes are then guided parallel to each other on the prism side in the direction of the center of the gas cable.
  • the parallel guidance of the tubes 5 within each triangular surface assigned to an octagon side (FIG.
  • all the wall pipes 15 of the throttle cable 1 are thus continued into the ceiling 20, so that all of the ceiling pipes with 100% of the wall pipes of the gas cable are connected in series on the medium side.
  • the differences in the pipe lengths of each octagon side with the associated triangular surface are practically the same, so that the heat absorption of the coolant flowing in the pipes - seen over the entire throttle cable - becomes more uniform and thus the coolant states when the coolant enters the collectors 22 are more uniform.
  • the working medium is combined in a manner not shown and either supplied to further heating surfaces of the steam generator or directly to a consumer.
  • the vertical throttle cable 1 serving, for example, as a steam generator combustion chamber has the shape of a straight, hexagonal prism with six identical sides.
  • the sides are in turn formed by wall tubes 15 which run in the longitudinal direction of the throttle cable 1 and which are welded tightly to one another by means of webs 6.
  • the tubes are bent inwards by approximately 90 ° from three sides which are not adjacent to one another and, as tubes 5 ', together form a first layer 3 of the ceiling 2 of the accelerator cable.
  • the remaining three sides of the prism are also bent inwards by 90 ° on a second height plane D lying approximately above the first height plane C and together form tubes 5 ′′ a second layer 4 of the ceiling 2.
  • the tubes 5 'originating from the wall of the throttle cable 1 lying on the left in FIG. 3 extend with the associated webs 6 to a point at which the two outermost tubes of this wall extend onto the adjacent outermost tube 5' meet other two walls of this layer; one of these two positions is designated E in FIG. 3.
  • the tubes 5 'coming from the left without webs 6 are bent upwards and - after a further 90 ° bend - open horizontally into an end collector 8.
  • the tubes 5' coming from the other two sides of the first Layer 3 initially runs similarly to those coming from the outside to a point F (FIG.
  • the first layer 3 of the ceiling 2 contains three triangular openings 13, one of which is partially visible in FIG. 3. These openings are covered by the tubes 5 ′′ forming the second layer 4. About half of the tubes 5 ′′ coming from one side of the throttle cable form a central strip which is guided so far towards the center of the gas cable 1 that it projects beyond the closest point E or F of the triangular surface in the first layer 3. At this end of each middle strip, the tubes 5 "are bent vertically upwards and, after a further bend, are guided horizontally into a collector 7.
  • each middle strip On both sides of each middle strip, the remaining tubes 5" coming from the associated throttle cable wall are guided about half as far as that Pipes of the middle strip and then bent vertically upwards and finally, after a further bend, bent horizontally and connected to the intermediate collector 7 into which the pipes of the middle strip also open.
  • the webs 6 of the second layer 4 run between the tubes 5 ′′ only in the height plane D.
  • the intermediate collectors 7 are connected to the end collector 8 by means of connecting tubes 12 (FIG. 4).
  • the intermediate collectors 7, like the end collector 8, are arranged essentially horizontally, the intermediate collectors 7 and the end collector 8 being at right angles to the pipes 5 ′′ or 5 ′ opening into them.
  • the connecting pipes 12 and those outside the first layer 3 and the second layer 4 running sections of the pipes 5 'and 5 "have the necessary flexibility due to their length and their course to be able to absorb deformations due to different thermal expansions in the ceiling 2 or due to earthquakes.
  • the supports 9 are connected in a known manner, not shown, to the ceiling 2 by means of a fixed connection in the middle and a plurality of connections distributed over their length and sliding in their longitudinal direction, and at their ends by means of joints to the vertical walls of the throttle cable 1.
  • bending stresses on the ceiling 2 are absorbed by the beams 9 and passed on to the walls of the gas cable 1 as pure tensile or compressive stress, the sliding connections and the joints absorbing thermal expansions in the longitudinal direction of the beams 9.
  • the pipes 5 ′′ guided around the supports 9 are at such a distance from the supports that they can perform their function undisturbed.
  • sheet metal strips 11 connect the first layer 3 to the second layer 4, so that the interior of the throttle cable 1 is sealed from its surroundings.
  • cover plates 10 are welded to the underside of the second layer 4, parallel to each edge of the triangular openings, each of which connects two adjacent tubes 5 "in such a way that adjacent cover plates 10 touch and all cover plates 10 together have flat surfaces
  • the sheet metal strips 11 are welded tightly to these flat surfaces and to those tubes 5 'which delimit the openings 13, approximately at the height of the longitudinal axis of these tubes, so that the welding points are easily accessible from below, both during manufacture and later also for any inspections.
  • both ends of the cover plates 10 are extended up to the webs 6 between the tubes 5 "and are tightly welded to these webs.
  • the exemplary embodiment according to FIGS. 7 and 8 relates to a ceiling 20 of a throttle cable 1 with a regular octagonal cross section.
  • the wall tubes 15 of the throttle cable 1 are bent outwards near its upper end and are guided in intermediate collectors 21;
  • Such a collector 21 is provided parallel to each side of the throttle cable 1.
  • the pipes 5 leaving each intermediate collector 21 run parallel to each other and enter the gas duct 1 between two wall pipes 15 to form the ceiling 20. In the ceiling 20, too, they run parallel to one another up to the edge 24, where they meet tubes 5 from an adjacent intermediate collector 21.
  • the tubes 5 are bent upwards at the edge 24 from the ceiling 20 and open into collectors 22 which run along the edges 24.
  • the length of the pipe sections projecting upward from the ceilings 20 is dimensioned such that they have sufficient flexibility to be able to compensate for deformations caused by thermal expansion or earthquakes without problems.
  • the intermediate collectors 21 in the medium flow differently than shown in FIG. 7.
  • the wall pipes 15 of a wall of the throttle cable 1 can be connected via the associated intermediate collector to pipes 5 which are not in the triangular section of the ceiling 20 adjoining the wall mentioned.
  • penetrations such as manholes can also be made in the ceiling in a known manner.

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)

Claims (14)

1. Echangeur thermique comportant un dispositif de tirage de gaz (1), qui se compose de tuyaux formant paroi (15) sensiblement parallèles à son axe longitudinal, soudés les uns aux autres de manière étanche aux gaz et véhiculant un milieu, et qui est fermé à l'une de ses extrémités au moins par des tuyaux (5) également soudés les uns aux autres de manière étanche, véhiculant un milieu et s'étendant transversalement à l'axe longitudinal du dispositif de tirage de gaz (1), caractérisé en ce que la totalité des tuyaux (5) fermant l'une des extrémités du dispositif de tirage de gaz (1) sont, s'agissant du milieu, raccordés à 80% au moins des tuyaux formant paroi (15) du dispositif de tirage de gaz (1).
2. Echangeur thermique selon la revendication 1, caractérisé en ce que les tuyaux formant paroi (15) sont repliés de 90° environ en direction de l'espace intérieur entouré par le dispositif de tirage de gaz (1) pour constituer des tuyaux (5) fermant l'une des extrémités du dispositif de tirage de gaz (1).
3. Echangeur thermique selon la revendication 1, caractérisé en ce que les tuyaux formant paroi (15) sont repliés de 90° environ en direction de l'espace intérieur entouré par le dispositif de tirage de gaz (1) pour constituer les tuyaux (5) fermant l'une des extrémités du dispositif de tirage de gaz (1) et s'étendent dans un plan, parallèlement les uns aux autres, sous forme de groupes, en ce que les tuyaux de fermeture (5) sont repliés à partir de leur plan respectif parallèlement à l'axe longitudinal du dispositif de tirage de gaz (1) dans les zones (24), où ils rencontrent les tuyaux (5) de fermeture des autres groupes et débouchent dans des collecteurs (22) qui s'étendent parallèlement aux zones (14) dans lesquelles les groupes de tuyaux se rencontrent.
4. Echangeur thermique selon l'une des revendications 1 à 3, caractérisé en ce qu'à la transition entre les tuyaux formant paroi (15) et les tuyaux (5) fermant l'une des extrémités du dispositif de tirage de gaz (1), il est prévu au minimum un collecteur (21) raccordant les tuyaux (15, 5) mentionnés.
5. Echangeur thermique selon la revendication 4, caractérisé en ce que le collecteur (21) constitue un mélangeur pour le milieu qui le traverse.
6. Echangeur thermique selon l'une des revendications 1 à 5, caractérisé en ce que l'écartement des tuyaux formant paroi (15) dans le dispositif de tirage de gaz (1) et celui des tuyaux (5) fermant l'une des extrémités du dispositif de tirage de gaz (1) sont les mêmes.
7. Echangeur thermique selon la revendication 1, caractérisé en ce que le dispositif de tirage de gaz (1) présente une section transversale polygonale comportant plus de quatre sommets et un nombre pair de côtés de même longueur, en ce que les tuyaux formant paroi (15) d'une paroi sur deux du dispositif de tirage de gaz (1) sont, à la hauteur d'un premier plan (C), près de l'extrémité à fermer du dispositif de tirage de gaz, repliés vers l'intérieur de 90° environ et amenés respectivement sur un emplacement (E, F), situé sur une ligne de jonction qui relie respectivement les deux points auxquels se rencontrent les tuyaux extrêmes repliés (5') de chaque paroi sur deux voisine, en ce que les prolongements d'une partie au moins des tuyaux repliés (5') amenés jusqu'à la ligne de jonction remplissent la surface interne délimitée par les lignes de jonction et en ce que les tuyaux formant paroi (15) des autres parois du dispositif de tirage de gaz (1) sont, à la hauteur d'un deuxième plan (D) situé près de l'extrémité à fermer du dispositif de tirage de gaz, repliés vers l'intérieur de 90° environ et amenés suffisamment loin pour recouvrir une surface triangulaire (13), qui est délimitée par celle des autres parois concernées et par chacun des tuyaux repliés (5') extrêmes des deux parois voisines de cette autre paroi concernée.
8. Echangeur thermique selon la revendication 7, caractérisé en ce que l'écartement des tuyaux formant paroi (15) dans le dispositif de tirage de gaz (1) et, pour les tuyaux repliés (5') à partir d'une paroi sur deux du dispositif de tirage de gaz (1), l'écartement jusqu'à la ligne de jonction sont les mêmes.
9. Echangeur thermique selon la revendication 8, caractérisé en ce que l'écartement des tuyaux formant paroi (15) dans le dispositif de tirage de gaz (1) et celui des tuyaux (5") recouvrant les surfaces triangulaires (13) sont les mêmes.
10. Echangeur thermique selon la revendication 8 ou 9, caractérisé en ce que l'écartement des tuyaux (5') qui remplissent la surface interne délimitée par les lignes de jonction est plus petit que celui des tuyaux (5') repliés à partir d'une paroi sur deux du dispositif de tirage de gaz (1).
11. Echangeur thermique selon la revendication 7, caractérisé en ce que les tuyaux (5') repliés à partir d'une paroi sur deux du dispositif de tirage de gaz (1) débouchent dans un collecteur commun (8) et en ce que les tuyaux (5") repliés à partir des autres parois du dispositif de tirage de gaz (1) débouchent respectivement dans un collecteur (7), après avoir recouvert la surface triangulaire correspondante (13).
12. Echangeur thermique selon la revendication 11, caractérisé en ce que les collecteurs (7), dans lesquels débouchent les tuyaux (5") repliés à partir des autres parois du dispositif de tirage de gaz (1), sont reliés au collecteur commun (8).
13. Echangeur thermique selon la revendication 11, dont le dispositif de tirage de gaz (1) comporte un axe longitudinal vertical, caractérisé en ce qu'à l'extérieur du dispositif de tirage de gaz (1), à proximité des tuyaux (5', 5") fermant l'une des extrémités de celui-ci, sont placés plusieurs supports (9) parallèles les uns aux autres, situés entre les collecteurs (7), dans lesquels débouchent les tuyaux (5") repliés à partir des autres parois du dispositif de tirage de gaz, d'une part, et les tuyaux (5', 5") fermant l'extrémité du dispositif de tirage de gaz d'autre part, en même temps qu'ils s'étendent parallèlement au collecteur commun (8) et qu'ils sont raccordés de manière articulée aux parois du dispositif de tirage de gaz (1).
14. Echangeur thermique selon la revendication 11, caractérisé en ce que le collecteur commun (8) au moins constitue un mélangeur pour le milieu qui le traverse.
EP84105684A 1983-08-31 1984-05-18 Echangeur de chaleur avec un passage de gaz Expired EP0135668B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH4774/83 1983-08-31
CH477483 1983-08-31

Publications (3)

Publication Number Publication Date
EP0135668A2 EP0135668A2 (fr) 1985-04-03
EP0135668A3 EP0135668A3 (en) 1985-12-11
EP0135668B1 true EP0135668B1 (fr) 1988-08-24

Family

ID=4282306

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84105684A Expired EP0135668B1 (fr) 1983-08-31 1984-05-18 Echangeur de chaleur avec un passage de gaz

Country Status (6)

Country Link
US (1) US4546731A (fr)
EP (1) EP0135668B1 (fr)
JP (1) JPS6060404A (fr)
CA (1) CA1247479A (fr)
DE (1) DE3473636D1 (fr)
PL (1) PL248386A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3713912C1 (de) * 1987-04-25 1988-07-21 Babcock Werke Ag Kuehler fuer durch Vergasung erzeugte Gase
IT1285478B1 (it) * 1996-10-04 1998-06-08 Bono En S P A Generatore di calore a fluido diatermico,con controllo selettivo del flusso
US6793013B2 (en) * 2003-01-09 2004-09-21 Foster Wheeler Energy Corporation Polygonal heat exchange chamber including a tapered portion lined with water tube panels and method of lining a tapered portion of a polygonal heat exchange chamber with such panels
US10131574B2 (en) 2013-06-17 2018-11-20 Corning Incorporated Antimicrobial glass articles and methods of making and using same
CN104344401B (zh) * 2013-08-09 2016-09-14 中国科学院工程热物理研究所 带变截面水冷柱的循环流化床锅炉炉膛
JP2017511785A (ja) 2014-02-13 2017-04-27 コーニング インコーポレイテッド 強度および抗菌性を高めたガラス、およびそれを製造する方法

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE1104108B (de) * 1955-07-13 1961-04-06 Walther & Cie Ag Schmelzkammerfeuerung mit mehreren von oben befeuerten Teilbrennkammern
US2871832A (en) * 1956-03-12 1959-02-03 Combustion Eng Novel method relating to steam generators
US3299858A (en) * 1965-05-05 1967-01-24 Babcock & Wilcox Ltd Vapor generator wall construction
US3511217A (en) * 1968-09-18 1970-05-12 Foster Wheeler Corp Dual circulation vapor generator
AT315876B (de) * 1971-08-25 1974-06-10 Waagner Biro Ag Dampfkessel
DE2153965B2 (de) * 1971-10-29 1974-09-12 Kraftwerk Union Ag, 4330 Muelheim Dampferzeuger mit ebenem Brennkammerboden
US3814062A (en) * 1972-05-27 1974-06-04 Siegener Ag Waste heat boiler with boiler walls and wall portions of finned pipes
CH653360A5 (de) * 1980-09-19 1985-12-31 Sulzer Ag Heissgaskuehler an einer kohlevergasungsanlage.
US4394849A (en) * 1981-06-22 1983-07-26 Foster Wheeler Energy Corporation Vapor generator having drainable tube bends around burner openings extending through furnace boundary walls formed in part by angularly extending fluid flow tubes
US4355602A (en) * 1981-08-10 1982-10-26 Cedar Dunes Investments Ltd. Boiler
DE3173990D1 (en) * 1981-09-15 1986-04-10 Sulzer Ag Steam generator with a superheater tubular wall

Also Published As

Publication number Publication date
US4546731A (en) 1985-10-15
PL248386A1 (en) 1985-04-09
JPH0585803B2 (fr) 1993-12-08
JPS6060404A (ja) 1985-04-08
EP0135668A2 (fr) 1985-04-03
CA1247479A (fr) 1988-12-28
DE3473636D1 (en) 1988-09-29
EP0135668A3 (en) 1985-12-11

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