EP1213557B1 - Structure de tubes, structure de passage de fluides et échangeur de chaleur - Google Patents

Structure de tubes, structure de passage de fluides et échangeur de chaleur Download PDF

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Publication number
EP1213557B1
EP1213557B1 EP01660221A EP01660221A EP1213557B1 EP 1213557 B1 EP1213557 B1 EP 1213557B1 EP 01660221 A EP01660221 A EP 01660221A EP 01660221 A EP01660221 A EP 01660221A EP 1213557 B1 EP1213557 B1 EP 1213557B1
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EP
European Patent Office
Prior art keywords
tube structure
flow channel
tube
wall
heat exchanger
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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
EP01660221A
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German (de)
English (en)
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EP1213557A2 (fr
EP1213557A3 (fr
Inventor
Tuomas Lehtiniemi
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Valmet Power Oy
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Metso Power Oy
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Publication of EP1213557A3 publication Critical patent/EP1213557A3/fr
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Publication of EP1213557B1 publication Critical patent/EP1213557B1/fr
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    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
    • F28F9/12—Arrangements for sealing elements into header boxes or end plates by dismountable joints by flange-type connections

Definitions

  • the invention relates to a tube structure for heat exchangers according to the preamble portion of claim 1.
  • the invention also relates to a combination of a flow channel structure for a first heat transfer medium and one or more tube structures for a second heat transfer medium arranged to be used as a part of a heat exchanger, as defined in the preamble portion of claim 11.
  • the invention also relates to a heat exchanger according to the preamble portion of claim 13.
  • the invention also relates to the use of a tube structure or a combination of a flow channel structure and one or more tube structures as part of a pre-heater for air in a boiler plant, and to the use of a heat exchanger as a pre-heater for air in a boiler plant.
  • the tube structure, combination of a flow channel structure and one or more tube structures, and heat exchanger according to the invention are intended to be used particularly, but not solely, when heat is to be transferred from flue gases of the boiler plant to the combustion air to be introduced into the furnace of the boiler plant.
  • the structure is a pre-heater for air, a so-called Luvo heat exchanger structure.
  • these heat exchanger structures comprise horizontal tubes which are connected in a gas-tight manner to vertical tube plates which normally also constitute two of the walls of the flue gas channel forming the flow channel.
  • the combustion air flows inside the tubes, and the flue gases discharged from the furnace of the boiler plant flow outside the tubes, transversely with respect to the tubes. Naturally, the flow can also be arranged vice versa according to the practical application.
  • the Luvo heat exchanger is formed of one or more tube banks which are assembled in such a way that a group of single tubes are connected at opposite ends to two wall plates which partly form the wall structure of the flow channel and are provided with openings at the locations of the tubes, to form a tube bank by welding either directly or by means of an intermediate sleeve connected to the tube.
  • the problem lies particularly in that strong corrosion is present in the tubes of the tube banks placed in the coldest part of the flue gas channel, when the temperature of the flue gases is close to or within the range of the acid dew point.
  • Manufacturing by welding limits the number of available materials, because the tubes and the wall plates which form at least part of the wall structure of the flue gas channel must be weldable to each other. Also, it is not possible to use coatings on the outer surface of the tubes, because coatings do not stand the heat developed by welding without being damaged, and the coating of the welded location cannot be repaired afterwards.
  • the tube bank assembled by welding has such a structure that the ready welded tube bank cannot be coated afterwards.
  • Document US-A-1790897 shows a solution according to the preamble portions of independent claims 1, 11 and 13.
  • the tube structure comprises, at its both ends, fixing means for fixing the tube structure to the walls of the flow channel in a releasable manner.
  • Another way of fixing tube structures to walls of a flow channel in a releasable manner is shown in document GB-A-1061854 .
  • GB 533935 A describes a conventional way of fixing tubes to walls by welding.
  • a flow channel structure and one or more tube structures according to the invention is primarily characterized by the features set forth in the characterizing portion of claim 11.
  • heat exchanger according to the invention is primarily characterized by the features set forth in the characterizing portion of claim 13.
  • the threading at the first end of the tube structure serves as fixing means for a nut, by protruding outside the first wall of the flow channel in its installed position.
  • the threading is provided on the outer surface of a sleeve whose outer diameter is smaller than the outer diameter of the main tube of the tube structure. A part of the sleeve is placed inside the main tube and the sleeve is fixed at its outer surface to the main tube.
  • the fixing can be accomplished by a welded joint.
  • the above-presented solutions yield a tube structure, a combination of a flow channel structure and one or more tube structures and a heat exchanger whose materials and/or coatings can be selected primarily by taking into account their corrosion and erosion resistance as well as their strength against possible vibrations or other mechanical loads.
  • a heat exchanger implemented according to the primary characteristics of the invention is free from deformations which are typical of a welded structure and whose reparation would cause additional costs.
  • the tube structure, the combination of a flow channel structure and one or more tube structures, and the heat exchanger according to the invention can be easily maintained fit for duty, because the tube structures of the heat exchanger can even be exchanged one by one, if necessary, in the flow channel structure which may thus be placed in its actual use location, e.g. in a flue gas channel of a boiler plant.
  • the tube structure P shown in Fig. 1 is intended to be placed in connection with a heat exchanger, wherein the tube structure P is fixed between opposite walls 1, 2 of the flow channel VK, or the like, for a first heat transfer medium EV in the heat exchanger (Fig. 2).
  • a second heat transfer medium TV is arranged to flow through the tube structure P.
  • the tube structure P comprises, at its both ends 3, 4, fixing means 5, 6 for fixing the tube structure P in a releasable manner to the walls 1, 2 of the flow channel.
  • the first fixing means 5 at the first end 3 is a threading which is arranged to protrude outside the first wall 1 of the flow channel VK when the tube structure P is in installed position.
  • the second fixing means 6 of the tube structure P is, in turn, a collar flange located at the second end 4 of the tube structure P and protruding from its outer surface.
  • the collar flange is arranged to be located outside the second wall 2 of the flow channel VK when the tube structure P is in installed position.
  • the first fixing means 5 is, in the embodiment shown in the drawings, provided on the outer surface of a sleeve 8 fixed at the first end 7a of a main tube 7 which forms the actual flow channel for the second heat transfer medium TV in the tube structure P.
  • a part of the sleeve 8 is placed inside the main tube 7 and the sleeve 8 is fixed, at its outer surface, to the main tube 7.
  • the sleeve 8 is fixed by a welded joint 9 between the outer surface 8a of the sleeve 8 and the front surface 7b at the first end 7a of the main tube.
  • the welded joint 9 forms an annular sealing surface 10, which faces the first end 3 of the tube structure P and whose outer surface is preferably conical.
  • the sealing surface is sealed against a counter surface 11 in the first wall 1 and facing the flow channel VK, when the tube structure P is in installed position as shown in Fig. 2.
  • the collar flange 12 forming the second fixing means 6 is placed in connection with a sleeve unit 13 attached to the outer surface of the main tube, wherein the sleeve unit 13 is placed around the main tube 7 in its longitudinal direction, to extend substantially in the flow channel VK, as shown in Fig. 2.
  • the sleeve unit 13 is connected, at its end opposite to the collar flange 12, by a welded joint 14 to the outer surface of the main tube 7.
  • the outer surface of the sleeve unit 13 is cylindrical, and the diameter of its preferably circular inner hole 13a is greater than the diameter of the cross-section of the outer surface of the main tube 7, the sleeve unit 13 being, substantially over its whole length, off the outer surface of the main tube 7.
  • the collar flange 12 at the second end 4 of the tube structure P protrudes diagonally from the outer surface of the sleeve unit 13 and forms a sealing surface 12a by its surface facing the flow channel VK.
  • the sealing surface 12a is sealed against the counter surface 15 of the second wall 2, directed away from the flow channel VK.
  • the second heat transfer medium TV flowing in the tube structure P is arranged to flow into the tube structure P through the second end 4 of the tube structure P.
  • the dimensions and the material and/or the coating of the sleeve construction can be selected so that the whole tubular structure P is resistant at this critical point of the heat exchanger, where the temperature difference between the first EV and second TV heat transfer media is the greatest and which thus has the greatest risk of temperatures below the dew point.
  • the flow channel structure according to the invention is arranged to be used as a part of the heat exchanger to restrict the cross-sectional area for the flow of the first heat transfer medium EV.
  • the closed flow channel having a closed cross-sectional shape achieved by means of the wall structure forming the flow channel structure has a first wall 1 and a second wall 2, between which one or several tube structures P are placed in the flow channel VK, the second heat transfer medium TV thus flowing through the tube structures P.
  • the first 1 and second 2 walls are connected at their edges by end walls (not shown) to achieve said flow channel with a closed cross-section.
  • the first 1 and second 2 walls comprise at least one compatible pair 17, 18 of holes (in practical applications, however, several pairs 17, 18 of holes being placed at regular spacings in the walls 1 and 2), to place at least one tube structure P through the second hole 18 of the pair 17, 18 of holes to the flow channel structure in a sealed and releasable manner.
  • each pair 17, 18 of holes is formed in such a way that the hole 17 in the first wall 1 of the flow channel structure substantially corresponds, in its diameter, to the inner diameter of the cross-sectional shape of the tube structure P at the location of the flow channel, wherein the edge of the first hole 17 facing the flow channel is provided with a counter surface 11 to be used in the sealing between the tube structure and the first wall 1, the counter surface 11 being placed in abutment with the sealing surface 10 of the tube structure P.
  • the sleeve 8 fixed at the first end 7a of the main tube 7 protrudes through the first hole 17 outside the first wall 1 of the flow channel structure.
  • the diameter of the second hole 18, through which the tube structure P is thus installed into the flow channel VK is equal to or greater than the greatest outer diameter of the cross-section of the tube structure P (in practice, the outer diameter of the sleeve structure 13) at the flow channel VK, wherein the edge of the second hole 18 directed away, i.e. outwards from the flow channel VK is provided with a diagonal annular counter surface 15 which is to be used in the sealing between the tube structure P and the second wall 2 and which is connected to the sealing surface 12a of the collar flange 12 when the tube structure P is in installed position.
  • the heat exchanger comprises, in the above-described manner, a combination of a flow channel structure (walls 1, 2 and end walls connecting them) and at least one tube structure P placed therein.
  • the tube structures P are thus installed through the second wall 2 in such a way that the first end 3 of the tube structure P is introduced from the outside of the flow channel structure through the second hole 18 into and through the flow channel VK, until the sleeve 8 meets the first hole 17 of said pair of holes, through which the sleeve 8 is led to the position shown in Fig. 2.
  • the layout of the portions sealed against each other in the flow channel structure and in each tube structure P is dimensioned so that a good sealing is achieved after tightening with tightening means in the position shown in Fig. 2. If necessary, it is possible to use separate sealing materials to be placed between the sealing surfaces to secure the sealing effect accomplished with the sealing and counter surfaces (10, 11 and 12a, 15).
  • the first fixing means 5 of the tube structure P is thus a threading formed on the outer surface of the sleeve 8 at the first end 3 of the tube structure P, arranged to protrude outside the first wall 1 of the flow channel VK when the tube structure P is in installed position.
  • a nut 19, or the like is arranged to be installed outwardly of the heat exchanger (Fig. 3), wherein the first wall 1 of the flow channel structure is locked at the first hole 17 between the first end 3 of the tube structure P and the nut 19 or the like.
  • the nut 19 serves thus in the locking of the first end 3 of the tube structure P as a tightening member acting on the tube structure in the axial direction.
  • the second fixing means 6 of the tube structure P is an annular collar flange 12 located at the second end 4 of the tube structure P and protruding from its outer surface.
  • the collar flange is arranged to be located outside the second wall 2 of the flow channel VK when the tube structure P is in installed position.
  • a press plate 20 or the like to be installed outwardly from the heat exchanger, is arranged to be used in the fixing, wherein the collar flange 12 is locked between the second wall 2 of the flow channel VK and the press plate 20 or the like, connected to each other with a locking means 21, 22.
  • the press plate 20 or the like is arranged to fix several, preferably four collar flanges 121, 122, 123, 124 belonging to different tube structures P1-P4 (such tube structures P1-P4 are next to each other in the heat exchanger) and located at fixed distance from its centre (Fig. 4).
  • the locking means 21, 22 consists of a stud bolt 21, which is connected (for exmple by a threaded hole fit) to the second wall 2 of the flow channel VK, protrudes from its outer surface and is arranged to extend through a central hole 20a in the press plate 20 or the like, wherein a tightening nut 22 or the like, belonging to the locking means, is installed on the stud bolt 21 outside the press plate 20.
  • the tightening nut 22 or the like and the press plate 20, which can be several for one tube structure P in the manner shown by Fig. 3, serve in the locking of the second end 4 of the tube structure P as a tightening member acting on the tube structure in the axial direction and bringing about a force effect in the tube structure in the same direction as does the tightening member (nut 19) of its opposite, first end 3.

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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)
  • Rigid Pipes And Flexible Pipes (AREA)

Claims (19)

  1. Structure de tubes pour des échangeurs de chaleur, dans laquelle la structure de tubes (P) est prévue pour être fixée entre des parois opposées (1, 2) d'un canal d'écoulement (VK), ou autre, pour un premier milieu de transfert de chaleur (EV) d'un échangeur de chaleur, et dans laquelle un second milieu de transfert de chaleur (TV) est agencé pour s'écouler à travers la structure de tubes (P), et la structure de tubes (P) comprend, à ses deux extrémités (3, 4), des moyens de fixation (5, 6) pour fixer la structure de tubes (P) aux parois (1, 2) du canal d'écoulement (VK) d'une manière amovible, caractérisée en ce que les premiers moyens de fixation (5) de la structure de tubes (P) sont un filetage à la première extrémité (3) de la structure de tubes (P), agencé pour faire saillie à l'extérieur de la première paroi (1) du canal d'écoulement (VK) quand la structure de tubes (P) est en position installée et placé sur la surface extérieure d'un manchon (8) fixé à la première extrémité (7a) d'un tube principal (7) qui forme le canal d'écoulement réel pour le second milieu de transfert de chaleur (TV), dans laquelle le diamètre extérieur du manchon (8) est plus petit que le diamètre extérieur du tube principal (7) et une partie du manchon (8) est placée à l'intérieur du tube principal (7) et le manchon (8) est fixé, au niveau de sa surface extérieure, au tube principal (7).
  2. Structure de tubes selon la revendication 1, caractérisée en ce que les seconds moyens de fixation (6) de la structure de tubes (P) sont un rebord évasé (12) situé à la seconde extrémité (4) de la structure de tubes (P) et faisant saillie depuis sa surface extérieure, ledit rebord évasé étant agencé pour être positionné à l'extérieur de la seconde paroi (2) du canal d'écoulement (VK) quand la structure de tubes (P) est en position installée.
  3. Structure de tubes selon la revendication 1 ou 2, caractérisée en ce que le manchon (8) est fixé au moyen d'un joint soudé (9) formé entre la surface extérieure du manchon (8) et la surface avant (7b) au niveau de la première extrémité (7a) du tube principal (7).
  4. Structure de tubes selon la revendication 3, caractérisée en ce que ledit joint soudé (9) forme une surface d'étanchéité de préférence conique (10) dans la structure de tubes (P), qui est fermée étanchement contre une surface opposée (11) située au niveau de la première paroi (1) et dirigée vers le canal d'écoulement (VK) quand la structure de tubes (P) est en position installée.
  5. Structure de tubes selon l'une quelconque des revendications 2 à 4, caractérisée en ce que le rebord évasé (12) formant les seconds moyens de fixation (6) est placé en liaison avec une unité de manchon (13) fixée sur la surface extérieure du tube principal (P).
  6. Structure de tubes selon la revendication 5, caractérisée en ce que l'unité de manchon (13) est placée autour du tube principal (P) pour s'étendre sensiblement dans le canal d'écoulement (VK).
  7. Structure de tubes selon la revendication 5 ou 6, caractérisée en ce que le diamètre du trou intérieur de la section de l'unité de manchon (13) est supérieure au diamètre de la section de la surface extérieure du tube principal (7), dans laquelle l'unité de manchon (13) est, sensiblement sur toute sa longueur, hors de la surface extérieure du tube principal (7).
  8. Structure de tubes selon la revendication 5, 6 ou 7, caractérisée en ce que l'unité de manchon (13) est connectée, à son extrémité opposée au rebord évasé (12), par un joint soudé (14) à la surface extérieure du tube principal (7).
  9. Structure de tubes selon l'une quelconque des revendications 2 à 8, caractérisée en ce que le rebord évasé (12) au niveau de la seconde extrémité (4) de la structure de tubes (P) forme, par sa surface dirigée vers le canal d'écoulement (VK), une surface d'étanchéité (12) qui est fermée étanchement contre une surface opposée (15) située sur la seconde paroi (2) et s'éloignant du canal d'écoulement (VK).
  10. Structure de tubes selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la structure de tubes principale (7) et les parties qui y sont connectées, au moins sur les sections qui sont placés dans le canal d'écoulement (VK) quand la structure de tubes (P) est dans une position installée, sont recouverts avec un revêtement qui prend en compte les propriétés du premier milieu de transfert de chaleur (EV).
  11. Combinaison d'une structure de canal d'écoulement pour un premier milieu de transfert de chaleur (EV) et d'une ou plus structures de tube pour un second milieu de transfert de chaleur (TV) agencée pour être utilisée comme une partie d'un échangeur de chaleur, dans lequel la structure de canal d'écoulement produite au moyen d'une structure de paroi et ayant une forme en section fermée a des première et seconde parois (1, 2), entre lesquelles une ou plus structures de tube (P) sont placées dans le canal d'écoulement (VK), les première et seconde parois (1, 2) étant pourvues d'au moins une paire compatible (17, 18) de trous pour l'insertion d'au moins une structure de tubes (P) dans le second trou (18) de la paire (17, 18) de trous vers la structure de canal d'écoulement d'une manière étanche et amovible, caractérisée en ce que la structure de chaque paire (17, 18) de trous est formée de telle manière que le diamètre du premier trou (17) dans la première paroi (1) de la structure de canal d'écoulement correspond sensiblement au diamètre intérieur de la section de la structure de tubes (P) à l'emplacement du canal d'écoulement (VK), dans lequel le bord du premier trou (17) dirigé vers le canal d'écoulement est pourvu d'une surface opposée (11) destinée à être utilisée pour l'étanchéité entre la structure de tubes (P) et la première paroi (1), et de telle manière que le diamètre du trou (18) dans la seconde paroi (2) de la structure de canal d'écoulement est supérieur ou égal au diamètre extérieur de la section de la structure de tubes (P) à l'emplacement du canal d'écoulement (VK), dans lequel le bord du second trou (18) dirigé s'éloignant du canal d'écoulement (VK) est pourvu d'une surface opposée (15) destinée à être utilisée pour l'étanchéité entre la structure de tubes (P) et la seconde paroi (2).
  12. Combinaison selon la revendication 11, caractérisée en ce que la structure de tubes (P) est au niveau de ses deux extrémités (3, 4) bloquée dans la paroi (1, 2) par blocage de forme avec l'aide d'éléments de serrage agissant au niveau des deux extrémités du tube et de surfaces opposées (11, 10 et 15, 12a) entrant en contact l'une contre l'autre dans la direction axiale de la structure de tubes.
  13. Echangeur de chaleur comprenant une combinaison de structure de canal d'écoulement et une structure de tubes (P) placée dedans, dans lequel la structure de tubes (P) est fixée entre des parois opposées (1, 2) du canal d'écoulement (VK) ou autre de l'échangeur de chaleur, et dans lequel une premier milieu de transfert de chaleur (EV) s'écoule dans le canal d'écoulement (VK) et un second milieu de transfert de chaleur (TV) s'écoule à travers la structure de tubes (P), et la structure de tubes (P) comprend, à ses deux extrémités (3, 4) des moyens de fixation (5, 6) pour fixer la structure de tubes (P) d'une manière amovible aux parois du canal d'écoulement (VK), et en ce que les première et seconde parois (1, 2) de la structure de canal d'écoulement sont pourvues d'au moins une paire compatible (17, 18) de trous par lesquels au moins une structure de tubes (P) est placée dans la structure de canal d'écoulement d'une manière étanche et amovible, caractérisé en ce que les premiers moyens de fixation (5) de la structure de tubes (P) sont un filetage situé à une première extrémité (3) de la structure de tubes (P), agencé pour faire saillie vers l'extérieur de la première paroi (1) du canal d'écoulement (VK) quand la structure de tubes (P) est en position installée, et placé sur la surface extérieure d'un manchon (8) fixé à la première extrémité (7a) d'un tube principal (7) qui forme le canal d'écoulement réel pour le second milieu de transfert de chaleur (TV), dans lequel le diamètre extérieur du manchon (8) est plus petit que le diamètre extérieur du tube principal (7) et une partie du manchon (8) est placée à l'intérieur du tube principal (7) et le manchon (8) est fixé, au niveau de sa surface extérieure, au tube principal (7), et la fixation est agencée pour être mise en oeuvre par un écrou (19) ou autre qui peut être installé à l'extérieur de l'échangeur de chaleur, dans lequel la première paroi (1) du canal d'écoulement (VK) est bloquée entre la première extrémité (3) de la structure de tubes (P) et l'écrou (19) ou autre.
  14. Echangeur de chaleur selon la revendication 13, caractérisé en ce que les seconds moyens de fixation (6) de la structure de tubes (P) sont un rebord évasé (12) situé au niveau de la seconde extrémité (4) de la structure de tubes (P) et faisant saillie depuis sa surface extérieure, le rebord évasé étant agencé pour être positionné à l'extérieur de la seconde paroi (2) du canal d'écoulement (VK) quand la structure de tubes (P) est en position installée, et en ce que la fixation est agencée pour être mise en oeuvre par une plaque de pression (20) ou autre qui peut être installée à l'extérieur de l'échangeur de chaleur, dans lequel le rebord évasé (12) est bloqué entre la seconde paroi (2) du canal d'écoulement (VK) et la plaque de pression (20) ou autre, fixées ensemble avec des moyens de blocage (21, 22).
  15. Echangeur de chaleur selon la revendication 14, caractérisé en ce que la plaque de pression (20) ou autre est agencée pour fixer plusieurs, de préférence quatre rebords évasés (121, 122, 123, 124) situés à une distance fixe de son centre et appartenant à différentes structures de tube (P1-P4).
  16. Echangeur de chaleur selon l'une quelconque des revendications 13 à 15, caractérisé en ce que les moyens de blocage (21, 22) de la seconde extrémité (4) de la structure de tubes consiste en un goujon (21) connecté à la seconde paroi (2) du canal d'écoulement (VK), faisant saillie depuis sa surface extérieure, et étant agencé pour s'étendre à travers la plaque de pression (20) ou autre, dans lequel un écrou de serrage (22) ou autre est installé sur le goujon (21) à l'extérieur de la plaque de pression (20).
  17. Echangeur de chaleur selon l'une quelconque des revendications 13 à 16, caractérisé en ce que le second milieu de transfert de chaleur (TV) s'écoulant dans la structure de tubes (P) est agencé pour s'écouler dans la structure de tubes (P) par la seconde extrémité (4) de la structure de tubes (P).
  18. Utilisation d'une structure de tubes selon l'une quelconque des revendications 1 à 10 ou d'une combinaison selon la revendication 11 ou 12, comme une partie d'une installation de préchauffage d'air d'une installation de chaudière.
  19. Utilisation d'un échangeur de chaleur selon l'une quelconque des revendications 13 à 17 comme installation de préchauffage d'air dans une installation de chaudière.
EP01660221A 2000-12-05 2001-12-05 Structure de tubes, structure de passage de fluides et échangeur de chaleur Expired - Lifetime EP1213557B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20002659 2000-12-05
FI20002659A FI116418B (fi) 2000-12-05 2000-12-05 Putkirakenne, virtauskanavarakenne ja lämmönvaihdin

Publications (3)

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EP1213557A2 EP1213557A2 (fr) 2002-06-12
EP1213557A3 EP1213557A3 (fr) 2005-03-02
EP1213557B1 true EP1213557B1 (fr) 2007-08-08

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EP01660221A Expired - Lifetime EP1213557B1 (fr) 2000-12-05 2001-12-05 Structure de tubes, structure de passage de fluides et échangeur de chaleur

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EP (1) EP1213557B1 (fr)
AT (1) ATE369536T1 (fr)
DE (1) DE60129780T2 (fr)
ES (1) ES2288920T3 (fr)
FI (1) FI116418B (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005040610A1 (de) * 2005-08-27 2007-03-01 A. Monforts Textilmaschinen Gmbh & Co. Kg Rohrwärmetauscher

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1790897A (en) * 1931-02-03 brown
GB533935A (en) * 1939-10-21 1941-02-24 Arthur Guy Enock Improvements in tubular heat exchangers
US2816739A (en) * 1954-03-03 1957-12-17 Schutte & Koerting Co Tube and tube sheet assembly
GB1061854A (en) * 1964-08-12 1967-03-15 Babcock & Wilcox Ltd Improvements in or relating to tube banks
GB1244911A (en) * 1969-01-09 1971-09-02 British Iron Steel Research Improvements in and relating to ceramic recuperators
US4171014A (en) * 1972-11-28 1979-10-16 Sulzer Brothers Limited Arrangement for mounting tubes in a tank wall
FR2243386B1 (fr) * 1973-09-07 1976-11-19 Commissariat Energie Atomique
JPS5671799A (en) * 1979-11-14 1981-06-15 Kaneoka Kogyo Kk Tube and plate joining structure in multitubular heat exchanger
US5323849A (en) * 1993-04-21 1994-06-28 The United States Of America As Represented By The Secretary Of The Navy Corrosion resistant shell and tube heat exchanger and a method of repairing the same

Also Published As

Publication number Publication date
DE60129780D1 (de) 2007-09-20
FI20002659A (fi) 2002-06-06
DE60129780T2 (de) 2007-12-06
ATE369536T1 (de) 2007-08-15
FI20002659A0 (fi) 2000-12-05
FI116418B (fi) 2005-11-15
ES2288920T3 (es) 2008-02-01
EP1213557A2 (fr) 2002-06-12
EP1213557A3 (fr) 2005-03-02

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