EP0144040A2 - Device for holding together adjacent vertical tube sections of a loop-type heat exchanger - Google Patents

Device for holding together adjacent vertical tube sections of a loop-type heat exchanger Download PDF

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Publication number
EP0144040A2
EP0144040A2 EP84114067A EP84114067A EP0144040A2 EP 0144040 A2 EP0144040 A2 EP 0144040A2 EP 84114067 A EP84114067 A EP 84114067A EP 84114067 A EP84114067 A EP 84114067A EP 0144040 A2 EP0144040 A2 EP 0144040A2
Authority
EP
European Patent Office
Prior art keywords
section
welded
sections
adjacent
tubes
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
EP84114067A
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German (de)
French (fr)
Other versions
EP0144040A3 (en
EP0144040B1 (en
Inventor
Jean Fournier
Henri Patron
Paul Meynard
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.)
Stein Industrie SA
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Stein Industrie 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 Stein Industrie SA filed Critical Stein Industrie SA
Priority to AT84114067T priority Critical patent/ATE27736T1/en
Publication of EP0144040A2 publication Critical patent/EP0144040A2/en
Publication of EP0144040A3 publication Critical patent/EP0144040A3/en
Application granted granted Critical
Publication of EP0144040B1 publication Critical patent/EP0144040B1/en
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
    • 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
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/202—Suspension and securing arrangements for contact heating surfaces
    • 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
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/355—Heat exchange having separate flow passage for two distinct fluids
    • Y10S165/40—Shell enclosed conduit assembly
    • Y10S165/401—Shell enclosed conduit assembly including tube support or shell-side flow director
    • Y10S165/416—Extending transverse of shell, e.g. fin, baffle

Definitions

  • the present invention relates to a device for securing adjacent vertical sections close to tubes of a heat exchanger forming loops between an inlet and an outlet by which they are suspended from a rigid structure.
  • Document FR-A-1259288 has already proposed a device for securing adjacent tubes of an exchanger, comprising a male element welded to one of the two adjacent tubes, and two female elements welded to the other tube and coming to block the male element.
  • Such devices are relatively complex. They require in the case of document FR-A-1259288 different parts of complex shapes, and in the case of document US-A-2809616 eight parts and six welding operations by junction device.
  • the object of the present invention is to provide a device for securing the sections of vertical tubes which transfers the weight of the sections of the central part to the inlet and outlet sections, without however giving rise to stresses liable to produce deformations, cracks or weld breaks, but which is simple and quick to implement.
  • each section is provided with a hollow element projecting on its side facing the outside of the bundle, welded to it according to two generatrices, coming from press on the external surface of the neighboring section, and having a beak oriented downwards, while the neighboring section is provided opposite an analogous element, also welded on it according to two generatrices, coming to bear on the external surface of the first section below the first element, and provided with an upwardly facing spout fitting into the spout of the first element.
  • each section disposed on the inner side relative to the adjacent section with which it is secured is further provided with a cleat welded to its generatrix closest to the adjacent section below the lowest point of the hollow element , and at a sufficiently small distance from the height of the spouts to prevent the disengagement of the hollow elements for securing the two sections.
  • the superheater element comprises three tubes in parallel, forming four loops 5, 6, 7, 8, the sections of inlet tubes shown in 1 being subject to a fixed structure 3 and the sections of tubes of outlet shown in 2 to a fixed structure 4.
  • the securing device represented generally at 9, disposed in the upper part of the exchanger, comprises elements for securing adjacent sections, starting from the sections of the central loop, on the one hand to the left, on the other hand to the right, in order to transmit half the weight of the tubes to the inlet sections, and the other half to the outlet sections.
  • FIGS. 2 and 3 show on a larger scale hollow elements for securing two adjacent tubes 10 and 11.
  • the element 12 is welded to the tube section 10 by the weld beads 14 and 24. Its oblong internal opening comes into contact along the contour 16 with the adjacent section 11, and comprises a beak 18 oriented downwards, resting on the upper part of the element 13. The latter is welded to the section 11 by the weld beads 15 and 25. Its internal opening comes into contact with the section 10 along the contour 17, and has a beak 19 oriented upwards, pressing on the lower part of the element 12. The edges 20 of the spout 18 and 21 of the spout 19 appear in FIG. 3.
  • a cleat 22 is welded to the tube 10, below the element 13, and close enough to the latter so that it cannot disengage from the element 12, given the height of their spouts 18 and 19.
  • Figure 4 shows in perspective a fastening element before welding on a tube.
  • Generally rectangular in shape it has two flat edges 26, 27, along which it is welded to the corresponding tube, separated by a depression 28 of circular shape and of radius equal to the radius of the tubes, so as to be applied to the tube, and on the other side two flat edges 29, 30, separated by a depression 31 also of circular shape and of the same radius, so as to come to be applied on the adjacent tube. It is also pierced with an oblong opening 32, and ends downwards with a spout 18.

Abstract

A system for interlocking closely adjacent verical lengths (10, 11, FIG. 2) of tube in a heat exchanger in which the tubes form loops between an inlet and an outlet and in which the tubes are suspended from a rigid structure by said inlet and outlet. Starting from the middle lengths, each length is provided with a hollow member (12) projecting on its side towards the outside of the bundle, welded to the tube along two generator lines (14, 24), and resting against the outer face of the adjacent length, and including a downwardly projecting lip (18), while the adjacent length is provided with an opposite like member (13) likewise welded thereto along two generator lines (15, 25), pressing against the outer face of the first length below the first member, and fitted with an upwardly projecting lip (19) engaging with the lip of the first member.

Description

La présente invention concerne un dispositif de solidarisation de tronçons verticaux adjacents rapprochés de tubes d'un échangeur de chaleur formant des boucles entre une entrée et une sortie par lesquelles ils sont suspendus à une structure rigide.The present invention relates to a device for securing adjacent vertical sections close to tubes of a heat exchanger forming loops between an inlet and an outlet by which they are suspended from a rigid structure.

En effet, dans de tels échangeurs, le poids des tronçons des tubes disposés dans la partie centrale entraînerait des déformations si ce poids n'était pas reporté sur les tronçons externes reliés à l'entrée et à la sortie. On a déjà proposé de transmettre leur poids en solidarisant rigidement tous les tronçons de tubes dans la zone la plus haute au moyen de petits éléments ronds ou carrés soudés entre les tronçons. Ce dispositif rigide est soumis à des contraintes résultant, outre le poids des tubes,

  • - des différences de dilatation entre les diverses boucles, dont les températures moyennes sont différentes, du fait du réchauffage du fluide circulant dans l'échangeur de son entrée à sa sortie,
  • - des vibrations pouvant survenir en fonctionnement,
  • - de phénomènes de balancement des panneaux de tubes à l'intérieur de la chambre de combustion,
  • - du retrait des soudures, celles-ci étant effectuées sur un ensemble rigide.
Indeed, in such exchangers, the weight of the sections of the tubes arranged in the central part would cause deformations if this weight were not transferred to the external sections connected to the inlet and the outlet. It has already been proposed to transmit their weight by rigidly securing all the sections of tubes in the highest zone by means of small round or square elements welded between the sections. This rigid device is subjected to stresses resulting, in addition to the weight of the tubes,
  • - differences in expansion between the various loops, the average temperatures of which are different, due to the heating of the fluid circulating in the exchanger from its inlet to its outlet,
  • - vibrations that may occur during operation,
  • - rocking phenomena of the tube panels inside the combustion chamber,
  • - the removal of the welds, these being carried out on a rigid assembly.

Ces contraintes risquent d'entraîner des déformations et des fissurations ou même des ruptures de certaines soudures.These stresses risk causing deformations and cracks or even ruptures of certain welds.

Il a déjà été proposé dans le document FR-A- 1259288 un dispositif de solidarisation de tubes adjacents d'un échangeur, comprenant un élément mâle soudé sur l'un des deux tubes adjacents, et deux éléments femelles soudés sur l'autre tube et venant bloquer l'élément mâle.Document FR-A-1259288 has already proposed a device for securing adjacent tubes of an exchanger, comprising a male element welded to one of the two adjacent tubes, and two female elements welded to the other tube and coming to block the male element.

Il a aussi été proposé dans le document US-A- 2809616 un dispositif de solidarisation de tubes adjacents d'un échangeur, comprenant de chaque côté des deux tubes adjacents trois pièces de jonction, l'une à hauteur médiane soudée à l'un des tubes, et les deux autres disposées respectivement au-dessus et au-dessous de la première, soudées à l'autre tube. Ces pièces sont réunies par un goujon vertical qui les traverse.There has also been proposed in document US-A-2809616 a device for securing adjacent tubes of an exchanger, comprising on each side of the two adjacent tubes three junction pieces, one at mid-height welded to one of the tubes, and the other two arranged respectively above and below the first, welded to the other tube. These parts are joined by a vertical stud which crosses.

De tels dispositifs sont relativement complexes. Ils nécessitent dans le cas du document FR-A- 1259288 des pièces différentes de formes complexes, et dans le cas du document US-A- 2809616 huit pièces et six opérations de soudage par dispositif de jonction.Such devices are relatively complex. They require in the case of document FR-A-1259288 different parts of complex shapes, and in the case of document US-A-2809616 eight parts and six welding operations by junction device.

La présente invention a pour but de procurer un dispositif de solidarisation des tronçons de tubes verticaux qui reporte le poids des tronçons de la partie centrale sur les tronçons d'entrée et de sortie, sans cependant entraîner de contraintes susceptibles de produire des déformations, fissurations ou ruptures de soudures, mais qui soit simple et de mise en oeuvre rapide.The object of the present invention is to provide a device for securing the sections of vertical tubes which transfers the weight of the sections of the central part to the inlet and outlet sections, without however giving rise to stresses liable to produce deformations, cracks or weld breaks, but which is simple and quick to implement.

Le dispositif selon l'invention est caractérisé en ce qu'à partir des tronçons centraux, chaque tronçon est muni d'un élément creux en saillie sur son côté tourné vers l'extérieur du faisceau, soudé sur lui selon deux génératrices, venant s'appuyer sur la surface externe du tronçon voisin, et comportant un bec orienté vers le bas, cependant que le tronçon voisin est muni en regard d'un élément analogue, également soudé sur lui selon deux génératrices, venant s'appuyer sur la surface externe du premier tronçon au-dessous du premier élément, et muni d'un bec orienté vers le haut s'emboîtant avec le bec du premier élément.The device according to the invention is characterized in that, starting from the central sections, each section is provided with a hollow element projecting on its side facing the outside of the bundle, welded to it according to two generatrices, coming from press on the external surface of the neighboring section, and having a beak oriented downwards, while the neighboring section is provided opposite an analogous element, also welded on it according to two generatrices, coming to bear on the external surface of the first section below the first element, and provided with an upwardly facing spout fitting into the spout of the first element.

De préférence, chaque tronçon disposé du côté intérieur par rapport au tronçon adjacent avec lequel il est solidarisé est en outre muni d'un taquet soudé sur sa génératrice la plus proche du tronçon adjacent au-dessous du point le plus bas de l'élément creux, et à une distance suffisamment faible par rapport à la hauteur des becs pour empêcher le déboîtement des éléments creux de solidarisation des deux tronçons.Preferably, each section disposed on the inner side relative to the adjacent section with which it is secured is further provided with a cleat welded to its generatrix closest to the adjacent section below the lowest point of the hollow element , and at a sufficiently small distance from the height of the spouts to prevent the disengagement of the hollow elements for securing the two sections.

Il est décrit ci-après à titre d'exemple et en référence aux figures du dessin annexé, un dispositif de solidarisation des tronçons verticaux voisins de tubes d'un élément de surchauffeur de vapeur pour chaudière.It is described below by way of example and with reference to the figures of the accompanying drawing, a device for securing the neighboring vertical sections of tubes of a steam superheater element for a boiler.

  • La figure 1 représente l'élément de surchauffeur en élévation.Figure 1 shows the superheater element in elevation.
  • La figure 2 représente en élévation les éléments creux de solidarisation de deux tronçons voisins soudés sur ceux-ci et en prise l'un sur l'autre.FIG. 2 shows in elevation the hollow elements for securing two neighboring sections welded thereon and in engagement one over the other.
  • La figure 3 représente les mêmes éléments en plan vus de dessus.Figure 3 shows the same plan elements seen from above.
  • La figure 4 représente en perspective un élément creux de solidarisation.Figure 4 shows in perspective a hollow fastening element.

Dans la figure 1, l'élément de surchauffeur comporte trois tubes en parallèle, formant quatre boucles 5, 6, 7, 8, les tronçons de tubes d'entrée représentés en 1 étant assujettis à une structure fixe 3 et les tronçons de tubes de sortie représentés en 2 à une structure fixe 4. Le dispositif de solidarisaion, représenté globalement en 9, disposé dans la partie supérieure de l'échangeur, comporte des éléments de solidarisation de tronçons adjacents, à partir des tronçons de la boucle centrale, d'une part vers la gauche, d'autre part vers la droite, afin de transmettre la moitié du poids des tubes aux tronçons d'entrée, et l'autre moitié aux tronçons de sortie.In FIG. 1, the superheater element comprises three tubes in parallel, forming four loops 5, 6, 7, 8, the sections of inlet tubes shown in 1 being subject to a fixed structure 3 and the sections of tubes of outlet shown in 2 to a fixed structure 4. The securing device, represented generally at 9, disposed in the upper part of the exchanger, comprises elements for securing adjacent sections, starting from the sections of the central loop, on the one hand to the left, on the other hand to the right, in order to transmit half the weight of the tubes to the inlet sections, and the other half to the outlet sections.

Les figures 2 et 3 représentent à plus grande échelle des éléments creux de solidarisation de deux tubes adjacents 10 et 11.FIGS. 2 and 3 show on a larger scale hollow elements for securing two adjacent tubes 10 and 11.

L'élément 12 est soudé au tronçon de tube 10 par les cordons de soudure 14 et 24. Son ouverture interne oblongue vient au contact le long du contour 16 avec le tronçon adjacent 11, et comporte un bec 18 orienté vers le bas, reposant sur la partie supérieure de l'élément 13. Ce dernier est soudé au tronçon 11 par les cordons de soudure 15 et 25. Son ouverture interne vient au contact du tronçon 10 le long du contour 17, et présente un bec 19 orienté vers le haut, s'appuyant sur la partie inférieure de l'élément 12. Les arêtes 20 du bec 18 et 21 du bec 19 apparaissent sur la figure 3.The element 12 is welded to the tube section 10 by the weld beads 14 and 24. Its oblong internal opening comes into contact along the contour 16 with the adjacent section 11, and comprises a beak 18 oriented downwards, resting on the upper part of the element 13. The latter is welded to the section 11 by the weld beads 15 and 25. Its internal opening comes into contact with the section 10 along the contour 17, and has a beak 19 oriented upwards, pressing on the lower part of the element 12. The edges 20 of the spout 18 and 21 of the spout 19 appear in FIG. 3.

Pour éviter toute possibilité de déboîtement des deux éléments de solidarisation, un taquet 22 est soudé sur le tube 10, au-dessous de l'élément 13, et suffisamment près de celui-ci pour qu'il ne puisse pas se déboîter de l'élément 12, compte tenu de la hauteur de leurs becs 18 et 19.To avoid any possibility of disengagement of the two securing elements, a cleat 22 is welded to the tube 10, below the element 13, and close enough to the latter so that it cannot disengage from the element 12, given the height of their spouts 18 and 19.

La figure 4 représente en perspective un élément de solidarisation avant son soudage sur un tube. De forme générale rectangulaire, il comporte deux bords plans 26, 27, le long desquels il est soudé sur le tube correspondant, séparés par une dépression 28 de forme circulaire et de rayon égal au rayon des tubes, de façon à s'appliquer sur le tube, et de l'autre côté deux bords plans 29, 30, séparés par une dépression 31 également de forme circulaire et de même rayon, de façon à venir s'appliquer sur le tube adjacent. Il est percé en outre d'une ouverture oblongue 32, et se termine vers le bas par un bec 18.Figure 4 shows in perspective a fastening element before welding on a tube. Generally rectangular in shape, it has two flat edges 26, 27, along which it is welded to the corresponding tube, separated by a depression 28 of circular shape and of radius equal to the radius of the tubes, so as to be applied to the tube, and on the other side two flat edges 29, 30, separated by a depression 31 also of circular shape and of the same radius, so as to come to be applied on the adjacent tube. It is also pierced with an oblong opening 32, and ends downwards with a spout 18.

Claims (2)

1/ Dispositif de solidarisation de tronçons verticaux adjacents rapprochés (10, 11, figure 2) de tubes d'un échangeur de chaleur, formant des boucles parallèles entre une entrée et une sortie par lesquelles ils sont suspendus à une structure rigide, caractérisé en ce qu'à partir des tronçons centraux, chaque tronçon est muni d'un élément creux (12) en saillie sur son côté tourné vers l'extérieur du faisceau, soudé sur lui selon deux génératrices (14, 24), et venant s'appuyer sur la surface externe du tronçon voisin, et comportant un bec (18) orienté vers le bas, cependant que le tronçon voisin est muni en regard d'un élément analogue (13), également soudé sur lui selon deux génératrices (15, 25), venant s'appuyer sur la surface externe du premier tronçon au-dessous du premier élément, et muni d'un bec (19) orienté vers le haut s'emboîtant avec le bec du premier élément.1 / Device for securing close adjacent vertical sections (10, 11, FIG. 2) of tubes of a heat exchanger, forming parallel loops between an inlet and an outlet by which they are suspended from a rigid structure, characterized in that that from the central sections, each section is provided with a hollow element (12) projecting on its side facing the outside of the bundle, welded on it according to two generatrices (14, 24), and coming to bear on the external surface of the neighboring section, and comprising a downwardly directed spout (18), while the neighboring section is provided opposite a similar element (13), also welded to it according to two generatrices (15, 25) , coming to bear on the external surface of the first section below the first element, and provided with a beak (19) oriented upwardly fitting with the beak of the first element. 2/ Dispositif selon la revendication 1, caractérisé en ce que chaque tronçon de tube disposé du côté intérieur par rapport au tronçon adjacent avec lequel il est solidarisé est en outre muni d'un taquet (20) soudé sur sa génératrice la plus proche du tronçon adjacent, au-dessous du point le plus bas de l'élément creux, et à une distance suffisamment faible par rapport à la hauteur des becs (18, 19) pour empêcher le déboîtement des éléments creux (12, 13) de solidarisation des deux tronçons.2 / Device according to claim 1, characterized in that each section of tube disposed on the inner side relative to the adjacent section with which it is secured is further provided with a cleat (20) welded to its generatrix closest to the section adjacent, below the lowest point of the hollow element, and at a sufficiently small distance from the height of the spouts (18, 19) to prevent the disengagement of the hollow elements (12, 13) from securing the two sections.
EP84114067A 1983-11-25 1984-11-22 Device for holding together adjacent vertical tube sections of a loop-type heat exchanger Expired EP0144040B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84114067T ATE27736T1 (en) 1983-11-25 1984-11-22 DEVICE FOR THE PERMANENT CONNECTION OF CLOSELY SECURING VERTICAL TUBE PARTS FOR A SERPENT-SHAPED TUBE HEAT EXCHANGER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8318815 1983-11-25
FR8318815A FR2555723B1 (en) 1983-11-25 1983-11-25 DEVICE FOR SOLIDARIZING ADJACENT VERTICAL LINKS CLOSE TO TUBES OF A LOOP HEAT EXCHANGER

Publications (3)

Publication Number Publication Date
EP0144040A2 true EP0144040A2 (en) 1985-06-12
EP0144040A3 EP0144040A3 (en) 1985-08-14
EP0144040B1 EP0144040B1 (en) 1987-06-10

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Application Number Title Priority Date Filing Date
EP84114067A Expired EP0144040B1 (en) 1983-11-25 1984-11-22 Device for holding together adjacent vertical tube sections of a loop-type heat exchanger

Country Status (9)

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US (1) US4550777A (en)
EP (1) EP0144040B1 (en)
JP (1) JPS60133294A (en)
KR (1) KR890003110B1 (en)
AT (1) ATE27736T1 (en)
DE (1) DE3464156D1 (en)
FR (1) FR2555723B1 (en)
IN (1) IN161829B (en)
ZA (1) ZA849172B (en)

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Cited By (3)

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DE3935815A1 (en) * 1989-10-27 1991-05-02 Degussa DUSTARM PIGMENT- BZW. DYE-FINE GRANULES
EP3578911A1 (en) * 2018-06-06 2019-12-11 Werner & Pfleiderer Industrielle Backtechnik GmbH Pipe heat exchanger for a baking oven
US11015881B2 (en) 2018-06-06 2021-05-25 Werner & Pfleiderer Industrielle Backtechnik Gmbh Pipe heat exchanger for a baking oven

Also Published As

Publication number Publication date
DE3464156D1 (en) 1987-07-16
FR2555723A1 (en) 1985-05-31
KR850003982A (en) 1985-06-29
FR2555723B1 (en) 1988-02-05
JPH0139040B2 (en) 1989-08-17
KR890003110B1 (en) 1989-08-22
EP0144040A3 (en) 1985-08-14
ZA849172B (en) 1985-07-31
EP0144040B1 (en) 1987-06-10
US4550777A (en) 1985-11-05
ATE27736T1 (en) 1987-06-15
IN161829B (en) 1988-02-06
JPS60133294A (en) 1985-07-16

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