FR2461221A1 - Heat exchanger tube support plate - fits in grooves in ends of fixed ring inside exchanger - Google Patents
Heat exchanger tube support plate - fits in grooves in ends of fixed ring inside exchanger Download PDFInfo
- Publication number
- FR2461221A1 FR2461221A1 FR7918032A FR7918032A FR2461221A1 FR 2461221 A1 FR2461221 A1 FR 2461221A1 FR 7918032 A FR7918032 A FR 7918032A FR 7918032 A FR7918032 A FR 7918032A FR 2461221 A1 FR2461221 A1 FR 2461221A1
- Authority
- FR
- France
- Prior art keywords
- bolts
- tubes
- bores
- blades
- outer shell
- 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.)
- Pending
Links
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
- F28F9/0135—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening
- F28F9/0136—Auxiliary supports for elements for tubes or tube-assemblies formed by grids having only one tube per closed grid opening formed by intersecting strips
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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)
Abstract
Description
La présente invention concerne un dispositif de support du réseau de tubes d'un faisceau tubulaire d'échange de chaleur entre un premier fluide circulant dans les tubes et un second fluide circulant autour des tubes dans une direction générale parallèle à celle du premier, comprenant des jeux entrecroisés de lames parallèles tangentes aux parois des tubes. The present invention relates to a device for supporting the network of tubes of a tube bundle of heat exchange between a first fluid circulating in the tubes and a second fluid circulating around the tubes in a general direction parallel to that of the first, comprising interlocking sets of parallel blades tangent to the walls of the tubes.
On connait déjà des dispositifs de support de tubes consistant en jeux entrecroisés de plats parallèles. De tels dispositifs créent une perte de charge notable sur l'écoulement du fluide circulant autour des tubes, du fait de la fraction importante de la section droite qu'ils occupent. There are already known tube support devices consisting of interlocking sets of parallel plates. Such devices create a significant pressure drop on the flow of fluid circulating around the tubes, due to the large fraction of the cross section they occupy.
Par ailleurs, ltécoulement de ce fluide tend à être laminaire, ce qui entraine un coefficient d'échange de chaleur relativement faible.
Furthermore, the flow of this fluid tends to be laminar, which results in a relatively low heat exchange coefficient.
La présente invention a pour but de remédier à ces inconvénients, et de procurer un dispositif de support de tubes qui ne crée qu'une perte de charge relativement faible sur l'écoulement du fluide circulant autour des tubes et maintienne un bon coefficient d'échange de chaleur, tout en étant d'une structure simple, facile à monter et éventuellement à démonter pour changer une de ses pièees. The object of the present invention is to remedy these drawbacks, and to provide a tube support device which creates only a relatively low pressure drop on the flow of the fluid circulating around the tubes and maintains a good exchange coefficient. heat, while being of a simple structure, easy to assemble and possibly disassemble to change one of its traps.
Le dispositif de support selon l'invention est caractérisé en ce qu'il comprend deux jeux superposés de lames parallèles munies d'ondulations transversales à la direction d'écoulement des fluides, un jeu supérieur et un jeu inférieur, assujettis l'un à 11 autre le long du bord inférieur du jeu supérieur et du bord supérieur du jeu inférieur, et se croisant selon un angle aigu égal à l'angle au sommet d'une maille du réseau de tubes. The support device according to the invention is characterized in that it comprises two superimposed sets of parallel blades provided with corrugations transverse to the direction of flow of the fluids, an upper clearance and a lower clearance, each subject to 11 other along the lower edge of the upper set and the upper edge of the lower set, and crossing at an acute angle equal to the angle at the top of a mesh of the network of tubes.
Il répond en outre de préférence à au moins l'une des caractéristiques suivantes - Les bords inférieur du jeu supérieur et supérieur du jeu inférieur de lames parallèles sont munis d'encoches équidistantes dans lesquelles ils s'engagent mutuellement. It also preferably meets at least one of the following characteristics - The lower edges of the upper set and the upper set of the lower set of parallel blades are provided with equidistant notches in which they engage mutually.
- Les lames comportent des languettes d'extrémité, et une couronne d'accrochage solidaire de la virole externe est muni d'encoches correspondantes dans lesquelles lesdites languettes sont fixées.- The blades have end tabs, and a fastening ring integral with the outer shell is provided with corresponding notches in which said tabs are fixed.
- La couronne d'accrochage comporte des saillies vers l'extérieur à flancs verticaux munies d'alésages verticaux de logement de boulons de solidarisation avec la virole externe.- The attachment ring has outward projections with vertical sides provided with vertical bores for housing bolts for securing with the outer shell.
- La virole externe est munie d'une couronne fixe soudée sur son pourtour interne et comportant des évidements de logement des saillies de la couronne d'accrochage, et dans l'un au moins de ses épaulements supérieur et inférieur, de part et d'autre desdits évidements, des trous borgnes taraudés d'axe vertical pour le vissage de boulons de serrage contre ledit épaulement de l'une au moins de deux barres de support desdits boulons de solidarisation s'appuyant sur lesdits épaulements.- The external ferrule is provided with a fixed crown welded on its internal periphery and comprising recesses for housing the projections of the hooking crown, and in at least one of its upper and lower shoulders, on both sides. other of said recesses, tapped blind holes of vertical axis for the screwing of tightening bolts against said shoulder of at least one of two support bars of said securing bolts resting on said shoulders.
- L'une des barres de support est munie d'alésages de passage des boulons de solidarisation avec la virole externe, et l'autre barre de support d'alésages taraudés de vissage desdits boulons, et de part et d'autre de ceux-ci d'alésages de passage des boulons de serrage de ladite barre de support contre l'épau- lement correspondant.- One of the support bars is provided with bores for the passage of the fastening bolts with the external ferrule, and the other support bar with tapped bores for screwing said bolts, and on either side of these. ci of bores for the passage of the tightening bolts of said support bar against the corresponding shoulder.
Il est décrit ci-après, à titre d'exemple et en référence aux figures du dessin annexé, un dispositif de support des tubes d'un faisceau tubulaire selon I'invention. There is described below, by way of example and with reference to the figures of the appended drawing, a device for supporting the tubes of a tube bundle according to the invention.
La figure 1 représente le dispositif en perspective en vue éclatée. Figure 1 shows the device in exploded view.
La figure 2 représente une vue générale en plan de dessus de l'échangeur. FIG. 2 represents a general plan view from above of the exchanger.
La figure 3 représente à échelle agrandie avec coupe partielle le détail III de la figure 2. FIG. 3 represents on an enlarged scale with partial section the detail III of FIG. 2.
La figure 4 représente une coupe verticale selon l'axe IV-IV de la figure 3. FIG. 4 represents a vertical section along the axis IV-IV of FIG. 3.
La figure 5 représente une coupe verticale selon l'axe V-V de la figure 3. FIG. 5 represents a vertical section along the axis V-V of FIG. 3.
Dans la figure 1, on voit un seul tube 1 du faisceau tubulaire, supposé vertical . Ce tube est enserré dans une zone supérieure entre deux lames d'un jeu 2 de lames parallèles telles que 4, munies d'ondulations horizontales 5, 6, 7 (en creux sur la figure). Il est maintenu dans une zone inférieure entre deux lames d'un jeu 3 de lames parallèles telles -que 8, munies d'ondulations horizontales 9, 10, 11 (en relief sur la figure). Les tubes du faisceau étant supposés disposés en quinconce (voir fig. 3), les deux jeux de lames font un angle de 600. Ils s'emboitent l'un dans l'autre grâce à des encoches telles que 12 du bord inférieur du jeu supérieur, dans lesquelles viennent s'engager des encoches telles que 13 du bord supérieur du jeu inférieur. In Figure 1, we see a single tube 1 of the tube bundle, assumed to be vertical. This tube is clamped in an upper zone between two blades of a set 2 of parallel blades such as 4, provided with horizontal undulations 5, 6, 7 (recessed in the figure). It is held in a lower zone between two blades of a set 3 of parallel blades such as -que 8, provided with horizontal undulations 9, 10, 11 (in relief in the figure). The bundle tubes being supposed to be staggered (see fig. 3), the two sets of blades make an angle of 600. They fit into each other thanks to notches such as 12 on the bottom edge of the set upper, in which engage notches such as 13 of the upper edge of the lower clearance.
Les lames 4 du jeu supérieur comportent dans chacun de leurs coins supérieurs des languettes telles que 14, qui viennent s'engager dans des encoches telles que 15 fraisées dans le bord supérieur d'une couronne d'accrochage 16, fixée elle-même à la virole externe, comme on le verra ci-après. The blades 4 of the upper set have in each of their upper corners tongues such as 14, which engage in notches such as 15 milled in the upper edge of a hooking ring 16, itself fixed to the outer shell, as will be seen below.
Une partie 17 de ce bord supérieur a été arrachée pour montrer le dispositif de fixation. De façon analogue, les lames 8 du jeu inférieur sont munies dans chacun de leurs coins inférieurs de languettes telles que 18, qui viennent se loger dans des encoches telles que 19 fraisees dans le bord inférieur de la couronne d'accrochage. Les languettes telles que 14 et 18 sont ensuite soudées dans leur encoches 15, 19.A part 17 of this upper edge has been torn off to show the fixing device. Similarly, the blades 8 of the lower set are provided in each of their lower corners with tongues such as 18, which are received in notches such as 19 milled in the lower edge of the hooking ring. The tongues such as 14 and 18 are then welded into their notches 15, 19.
La fixation de la couronne d'accrochage à la virole de l'échangeur s'effectue elle-même comme suit. The attachment of the hooking ring to the shell of the exchanger is carried out itself as follows.
La couronne comporte de place en place sur son pourtour des fixations par redan. A cet effet, des saillies telles que 20 viennent s'engager dans des évidements 21 d'une couronne fixe 22 soudée par des cordons de soudure circulaires 23 et 24 à la virole externe 36. Les saillies 20 sont percées d'alésages 25 de passage de boulons de fixation 26 à extrémité filetée 26A. The crown has from place to place around its perimeter fastenings by step. To this end, protrusions such as 20 engage in recesses 21 of a fixed crown 22 welded by circular weld beads 23 and 24 to the outer ring 36. The protrusions 20 are pierced with bores 25 for passage of fixing bolts 26 with threaded end 26A.
Une barre de support supérieure 27 est percée d'alésages 28 de passage des boulons 26, et une barre de support inférieure 29 est percée de trous taraudés 30 de vissage de ces boulons. Par ailleurs, la couronne fixe 22 est percée de part et d'autre des évidements 21 et dans son épaulement inférieur 31 de trous borgnes taraudés de vissage de boulons 33 traversant les extrémités de la barre de fixation 29 dans des alésages 34.An upper support bar 27 is pierced with bores 28 for the passage of bolts 26, and a lower support bar 29 is pierced with tapped holes 30 for screwing these bolts. Furthermore, the fixed crown 22 is pierced on either side of the recesses 21 and in its lower shoulder 31 of tapped blind holes for screwing bolts 33 passing through the ends of the fixing bar 29 in bores 34.
La fixation de la couronne d'accrochage des lames 16 dans la couronne fixe 22 s'effectue en encastrant les saillies 20 dans les évidements 21, en appliquant resgsetivement les barres de support 27 et 29 sur les épaulements supérieur 35 et inférieur 31 de la couronne fixe, et en serrant la barre inférieure de fixation 29 contre l'épaulement inférieur 31 par engagement des vis 33 dans les alésages 34, puis vissage dans les trous borgnes 32. The attachment of the blade attachment ring 16 in the fixed ring 22 is effected by embedding the projections 20 in the recesses 21, by applying resgsetively the support bars 27 and 29 on the upper 35 and lower 31 shoulders of the ring. fixed, and by tightening the lower fixing bar 29 against the lower shoulder 31 by engagement of the screws 33 in the bores 34, then screwing in the blind holes 32.
On introduit alors les boulons 26 dans les alésages 28 de la barre supérieure et 25 des saillies 20, et les visse dans les trous taraudés 30 de la barre inférieure 29.The bolts 26 are then introduced into the bores 28 of the upper bar and 25 of the projections 20, and are screwed into the tapped holes 30 of the lower bar 29.
On voit en figure 2 la structure générale de l'échangeur, comportant un faisceau tubulaire axial 40 à l'intérieur d'une enveloppe et de ses couronnes fixes et d'accrochage (ensemble désigné par la référence 41), et un faisceau tubulaire annulaire 42 à l'intérieur d'une virole et de ses couronnes fixe 22 et d'accrochage 16 (ensemble désigné par la référence 43). FIG. 2 shows the general structure of the exchanger, comprising an axial tubular bundle 40 inside an envelope and its fixed and attachment rings (assembly designated by the reference 41), and an annular tubular bundle 42 inside a ferrule and its fixed crowns 22 and attachment 16 (assembly designated by the reference 43).
La disposition d'ensemble des lames formant dispositif de support vis-à-vis des tubes et de la couronne d'accrochage est mieux visible en figure 3, correspondant au détail III de la figure 2. On y voit les tubes disposés en quinconce tels que 51, 52, 53, 54, se trouvant aux sommets d'un losange, et les deux jeux de lames 4 et 8 se coupant selon un angle de 600. The overall arrangement of the blades forming a support device with respect to the tubes and the attachment ring is better visible in FIG. 3, corresponding to detail III of FIG. 2. The tubes are arranged in staggered rows such as as 51, 52, 53, 54, being at the tops of a rhombus, and the two sets of blades 4 and 8 intersecting at an angle of 600.
Les lames 4 s'engagent par des languettes dans des encoches 15 du pourtour de la couronne d'accrochage 16.The blades 4 engage by tongues in notches 15 around the periphery of the attachment ring 16.
Les figures 4 et 5 montrent plus en détail les organes de fixation de la couronne d'accrochage des lames et des barres supérieure 27 et inférieure 29 à la couronne fixe 22. Les saillies 20 de la couronne d'accrochage des lames telles que 4, 8 s'assemblent à redan dans des évidements de la couronne fixe 22. Les barres supérieure 27 et inférieure 29 sont serrées contre la saillie 20 par les boulons 26 qui traversent les alésages 28 de la barre supérieure et 26 de la saillie 20 et se vissent dans lesalésages filetés 30 de la barre inférieure 29. Cette dernière est serrée contre I'épaulement inférieur de la couronne fixe 22 par des boulons 33 traversant ses alésages 34 et se vissant dans les alésages filetés 32. FIGS. 4 and 5 show in greater detail the members for fixing the ring for hooking the blades and upper 27 and lower bars 29 to the fixed ring 22. The projections 20 of the ring for hooking the blades such as 4, 8 are assembled stepwise in recesses of the fixed ring 22. The upper 27 and lower bars 29 are tightened against the projection 20 by the bolts 26 which pass through the bores 28 of the upper bar and 26 of the projection 20 and are screwed in the threaded bores 30 of the lower bar 29. The latter is tightened against the lower shoulder of the fixed crown 22 by bolts 33 passing through its bores 34 and being screwed into the threaded bores 32.
Bien que le dispositif de support des tubes qui vient d'être décrit en référence aux figures du dessin paraisse préférable, on comprendra que diverses modifications peuvent lui être apportées sans sortir du cadre de l'invention, certains de ses organes pouvant être remplacés par d'autres qui joueraient le même rôle technique. Although the tube support device which has just been described with reference to the figures of the drawing appears preferable, it will be understood that various modifications can be made to it without departing from the scope of the invention, some of its members being able to be replaced by d others who would play the same technical role.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7918032A FR2461221A1 (en) | 1979-07-11 | 1979-07-11 | Heat exchanger tube support plate - fits in grooves in ends of fixed ring inside exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7918032A FR2461221A1 (en) | 1979-07-11 | 1979-07-11 | Heat exchanger tube support plate - fits in grooves in ends of fixed ring inside exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2461221A1 true FR2461221A1 (en) | 1981-01-30 |
Family
ID=9227775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7918032A Pending FR2461221A1 (en) | 1979-07-11 | 1979-07-11 | Heat exchanger tube support plate - fits in grooves in ends of fixed ring inside exchanger |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2461221A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0056744A2 (en) * | 1981-01-08 | 1982-07-28 | Georges Trepaud | Heat exchangers with bundles of straight or undulating tubes, especially on systems of supporting tubes, and method of realising such systems |
| FR2500144A1 (en) * | 1981-02-16 | 1982-08-20 | Trepaud Georges | Heat exchanger for stream generator etc. - has corrugated tubes and fixed and free radial supports at crests, with honeycomb structures and baffle rings between |
| EP0259575A1 (en) * | 1986-09-08 | 1988-03-16 | MAN Gutehoffnungshütte Aktiengesellschaft | Tube spacer grid for, e.g., steam generators |
| EP2887001A1 (en) * | 2013-12-18 | 2015-06-24 | Casale Sa | Tube heat exchange unit for internals of heat exchangers or reactors |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420297A (en) * | 1967-04-25 | 1969-01-07 | Combustion Eng | Heat exchanger tube support and spacing structure |
| DE2035011A1 (en) * | 1969-08-13 | 1971-02-25 | Combustion Eng | Pipe spacer device |
| DE2541986A1 (en) * | 1975-06-09 | 1976-12-16 | Breda Termomeccanica Spa | PROCESS FOR MANUFACTURING A GRATING COMPOSED OF TWO DIFFERENT MATERIALS, WHICH CAN REMAIN INITIALLY STIFF AND ALLOWS DIFFERENT THERMAL EXPANSIONS AFTER COMMISSIONING |
-
1979
- 1979-07-11 FR FR7918032A patent/FR2461221A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3420297A (en) * | 1967-04-25 | 1969-01-07 | Combustion Eng | Heat exchanger tube support and spacing structure |
| DE2035011A1 (en) * | 1969-08-13 | 1971-02-25 | Combustion Eng | Pipe spacer device |
| DE2541986A1 (en) * | 1975-06-09 | 1976-12-16 | Breda Termomeccanica Spa | PROCESS FOR MANUFACTURING A GRATING COMPOSED OF TWO DIFFERENT MATERIALS, WHICH CAN REMAIN INITIALLY STIFF AND ALLOWS DIFFERENT THERMAL EXPANSIONS AFTER COMMISSIONING |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0056744A2 (en) * | 1981-01-08 | 1982-07-28 | Georges Trepaud | Heat exchangers with bundles of straight or undulating tubes, especially on systems of supporting tubes, and method of realising such systems |
| EP0056744A3 (en) * | 1981-01-08 | 1982-08-04 | Georges Trepaud | Heat exchangers with bundles of straight or undulating tubes, especially on systems of supporting tubes, and method of realising such systems |
| FR2500144A1 (en) * | 1981-02-16 | 1982-08-20 | Trepaud Georges | Heat exchanger for stream generator etc. - has corrugated tubes and fixed and free radial supports at crests, with honeycomb structures and baffle rings between |
| EP0259575A1 (en) * | 1986-09-08 | 1988-03-16 | MAN Gutehoffnungshütte Aktiengesellschaft | Tube spacer grid for, e.g., steam generators |
| EP2887001A1 (en) * | 2013-12-18 | 2015-06-24 | Casale Sa | Tube heat exchange unit for internals of heat exchangers or reactors |
| WO2015091445A1 (en) * | 2013-12-18 | 2015-06-25 | Casale Sa | Tube heat exchange unit for internals of heat exchangers or reactors |
| US10655921B2 (en) | 2013-12-18 | 2020-05-19 | Casale Sa | Tube heat exchange unit for internals of heat exchangers reactors |
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