EP1231051B1 - Method and apparatus for producing corrugated sheets and apparatus for treating fluids - Google Patents
Method and apparatus for producing corrugated sheets and apparatus for treating fluids Download PDFInfo
- Publication number
- EP1231051B1 EP1231051B1 EP02290285A EP02290285A EP1231051B1 EP 1231051 B1 EP1231051 B1 EP 1231051B1 EP 02290285 A EP02290285 A EP 02290285A EP 02290285 A EP02290285 A EP 02290285A EP 1231051 B1 EP1231051 B1 EP 1231051B1
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- Prior art keywords
- strip
- rectilinear
- dies
- corrugation
- region
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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.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D13/00—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form
- B21D13/02—Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form by pressing
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- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
Definitions
- the present invention relates to a method of manufacturing, from a band of possibly perforated sheet metal material, a structured packing wave whose general surface is generated substantially by scanning a repetitive profile parallel to the edges of the sheet.
- the strip following a non-rectilinear guideline over at least a part of its length and having a main orientation oblique with respect to the edges of the strip in which the strip is bent-stamped in successive steps, by means of two strips opposed to reciprocal relative movement of approach-away, these strips having substantially conjugate active surfaces of the two faces of the wave.
- Cross-corrugated packings are used in various devices: mixers for a single phase, devices for heat exchange and / or material between two fluids.
- a particular application is distillation, especially air distillation.
- packings consist of modules or "packs” each of which is formed of a stack of corrugated strips obliquely, alternately in one direction and the other. These strips may be perforated or not, and made from smooth or textured sheets, usually metal. Examples are described in GB-A-1 004 046 and in CA-A-1 095 827.
- the strips are contained in vertical general planes.
- the modules are generally rotated 90 ° around the axis of the column from one module to the next, and it has been shown that these changes of direction cause, at the interfaces between the modules, bottlenecks which limit the processing capacity of the module. column.
- WO-A-97/16247 and EP-A-401682 describe a wave whose generatrices are curved at each end to become vertical at the upper and lower edges of the module.
- EP-A-1025985 discloses a method of manufacturing a cardboard humidification panel whose general surface is generated substantially by scanning a repetitive profile parallel to the edges of the strip, following a non-rectilinear guideline over at least a portion of its length and having a main orientation oblique to the edges of the strip, and folding is performed -drawing the band in successive steps, by means of two opposite strips with reciprocal relative movement of approach-away, these strips having substantially conjugate active surfaces of the two faces of the wave. While this method is known for folding cardboard, it has not been used to form metallic waves.
- the object of the invention is to make it possible to industrially produce such waves in a particularly economical manner and, more generally, to manufacture industrially waves whose generators have various shapes.
- the invention also relates to a device according to claim 11.
- the wave 1 shown in FIG. 1, assumed in a horizontal general plane, is a folded thin metal foil made of aluminum, copper or stainless steel which has two parallel lateral edges 2 and 3. Each edge forms a zig-zag repeating profile 4. zag 5 substantially rectilinear sides, with upper tops 6 and lower 7 radius as small as possible.
- the wave is generated by the scanning of the profile 4 parallel to the edges 2 and 3 along a directing line 8.
- This line 8 (FIGS. 1 and 3) has, over most of its length, a rectilinear running portion 9, inclined at 45 ° with respect to the edges 2 and 3, and it curves at each end along an arc 10 which ends on the corresponding edge, substantially perpendicular to it.
- the two arches 10 have opposing concavities, which gives the line 8 a general S shape elongated.
- the wave thus comprises a series of upper and lower wave peaks, having the same elongated S shape.
- the wave 1 is made from a thin flat metal strip by simple folding-stamping by means of a device A which comprises two opposite strips, lower 11 and upper 12, reciprocating relative movement of approach-away.
- Each strip comprises, in the direction of the other strip, two teeth, respectively 13-14 and 15-16, whose active surfaces have the three-dimensional shape of the corresponding face of the wave, these teeth being arranged to interpenetrate.
- the teeth thus have generatrices which each comprise a rectilinear main region extending through curved end regions, and define four convex peaks 13A to 16A and two recesses 13B and 15B of similar shape.
- the starting strip 17 is advanced in steps along the arrow F, parallel to these edges, by means of a feed mechanism 18, while the strips are spaced apart from one another. the other, the step in advance being equal to the pitch of the undulation. After each advance, the strips are brought closer to each other and deform the metal, which fills substantially the entire space between the strips, as shown in Figure 8.
- the manufacture of the wave is thus performed quickly, economically and reliably.
- the strip 17 may be perforated before folding, or in a separate perforation station located upstream of the device A, or within this device.
- the convex peaks of the teeth 13A to 16A have a reduced height, as represented at 19, in phantom in Figure 8 and in solid lines in Figure 9. More precisely, with respect to a reference horizontal plane, the level of the vertex of each tooth gradually decreases from a value H, in the rectilinear portion 9, to a value H- ⁇ H at the location of the edge 2 or 3.
- the metal is less stressed in its toric regions, where there remains a free space between itself and at least one of the two strips in the closed position thereof, as shown in Figure 9.
- the wave 1 may then have a slightly reduced height near its edges, which does not have any particular disadvantage for the resulting packing modules.
- the variant of Figure 10 uses other means to facilitate the shaping of the regions 10. In case, we do not limit the elongation of the metal as in the previous variant, but we modify the physical properties to allow this elongation in good conditions.
- a metal annealing station B upstream of the station A folding-stamping.
- the annealing concerns at least the marginal regions of the strip 17 in which the regions 10 will be formed, and possibly the whole of the strip.
- station B is located between the perforation station C and the station A of folding-pressing. But station B can be upstream of station C.
- the invention makes it possible to produce waves having very varied shapes of corrugations from smooth or structured (for example embossed) sheets, which makes it possible to improve the properties of the resultant criss-cross packings.
- the invention is applicable to other types of structured packings, for example to fan packings.
- These packings examples of which are described in WO-A-86/06296 and 90/10497 as well as in EP-A-845 293, define, after folding-stamping and stacking, a set of layers of fixed fans for stirring. fluid. In this case, it is the general surface of each wave which conforms to the definition indicated above.
- FIG. 11 a portion of an air distillation column 20, comprising a distillation section 21 disposed in the cylindrical shell 22 of the column.
- the section 21 is constituted by a corrugated-crossed packing itself formed of a stack of packing modules 23.
- Each module 23 consists of a stack of waves 1, each located in a vertical general plane, cut to length from the folded strip 17 and whose general wave directions are inverted from one wave to another, the edges 2 and 3 being arranged horizontally.
- Each module 22 is rotated 90 ° with respect to the next module around the vertical axis X-X of the column.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Catalysts (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Air Bags (AREA)
Abstract
Description
La présente invention est relative à un procédé de fabrication, à partir d'une bande de matière métallique en feuille éventuellement perforée, d'une onde de garnissage structuré dont la surface générale est générée sensiblement par balayage d'un profil répétitif parallèlement aux bords de la bande, suivant une ligne directrice non rectiligne sur au moins une partie de sa longueur et ayant une orientation principale oblique par rapport aux bords de la bande dans lequel on effectue un pliage-emboutissage de la bande par pas successifs, au moyen de deux réglettes opposées à mouvement relatif alternatif de rapprochement-éloignement, ces réglettes possédant des surfaces actives sensiblement conjuguées des deux faces de l'onde.The present invention relates to a method of manufacturing, from a band of possibly perforated sheet metal material, a structured packing wave whose general surface is generated substantially by scanning a repetitive profile parallel to the edges of the sheet. the strip, following a non-rectilinear guideline over at least a part of its length and having a main orientation oblique with respect to the edges of the strip in which the strip is bent-stamped in successive steps, by means of two strips opposed to reciprocal relative movement of approach-away, these strips having substantially conjugate active surfaces of the two faces of the wave.
Les garnissages ondulés-croisés sont utilisés dans divers appareils : mélangeurs pour une phase unique, dispositifs d'échange de chaleur et/ou de matière entre deux fluides. Une application particulière est la distillation, notamment la distillation d'air.Cross-corrugated packings are used in various devices: mixers for a single phase, devices for heat exchange and / or material between two fluids. A particular application is distillation, especially air distillation.
Ces garnissages sont constitués de modules ou « packs » dont chacun est formé d'un empilement de bandes ondulées en oblique, alternativement dans un sens et dans l'autre. Ces bandes peuvent être perforées ou non, et réalisées à partir de feuilles lisses ou texturées, généralement métalliques. Des exemples sont décrits dans GB-A-1 004 046 et dans CA-A-1 095 827.These packings consist of modules or "packs" each of which is formed of a stack of corrugated strips obliquely, alternately in one direction and the other. These strips may be perforated or not, and made from smooth or textured sheets, usually metal. Examples are described in GB-A-1 004 046 and in CA-A-1 095 827.
Dans le cas des colonnes de distillation, les bandes sont contenues dans des plans généraux verticaux. Les modules sont généralement tournés de 90° autour de l'axe de la colonne d'un module au suivant, et on a montré que ces changements de direction provoquent, aux interfaces entre les modules, des engorgements qui limitent la capacité de traitement de la colonne.In the case of distillation columns, the strips are contained in vertical general planes. The modules are generally rotated 90 ° around the axis of the column from one module to the next, and it has been shown that these changes of direction cause, at the interfaces between the modules, bottlenecks which limit the processing capacity of the module. column.
Divers moyens ont été proposés pour limiter cet engorgement. En particulier, WO-A-97/16 247 et EP-A-401682 décrivent une onde dont les génératrices sont incurvées à chaque extrémité pour devenir verticales aux bords supérieur et inférieur du module.Various means have been proposed to limit this waterlogging. In particular, WO-A-97/16247 and EP-A-401682 describe a wave whose generatrices are curved at each end to become vertical at the upper and lower edges of the module.
EP-A-1025985 décrit un mode de fabrication d'un panneau d'humidification en carton dont la surface générale est générée sensiblement par balayage d'un profil répétitif parallèlement aux bords de la bande, suivant une ligne directrice non rectiligne sur au moins une partie de sa longueur et ayant une orientation principale oblique par rapport aux bords de la bande, et on effectue un pliage-emboutissage de la bande par pas successifs, au moyen de deux réglettes opposées à mouvement relatif alternatif de rapprochement-éloignement, ces réglettes possédant des surfaces actives sensiblement conjuguées des deux faces de l'onde. Si ce procédé est connu pour plier du carton, il n'a pas été utilisé pour former des ondes métalliques.EP-A-1025985 discloses a method of manufacturing a cardboard humidification panel whose general surface is generated substantially by scanning a repetitive profile parallel to the edges of the strip, following a non-rectilinear guideline over at least a portion of its length and having a main orientation oblique to the edges of the strip, and folding is performed -drawing the band in successive steps, by means of two opposite strips with reciprocal relative movement of approach-away, these strips having substantially conjugate active surfaces of the two faces of the wave. While this method is known for folding cardboard, it has not been used to form metallic waves.
L'invention a pour but de permettre de réaliser industriellement de telles ondes de façon particulièrement économique et, plus généralement, de fabriquer industriellement des ondes dont les génératrices ont des formes variées.The object of the invention is to make it possible to industrially produce such waves in a particularly economical manner and, more generally, to manufacture industrially waves whose generators have various shapes.
A cet effet, le procédé de fabrication suivant l'invention est caractérisé en ce que la bande est en matière métallique et en ce que dans au moins une région non rectiligne, au moins certains, sommets convexes d'au moins une réglette ont une hauteur réduite par rapport à celle d'une région rectiligne adjacente. Le procédé suivant l'invention peut comporter une ou plusieurs des caractéristiques suivantes :
- les surfaces actives des réglettes sont formées de telle sorte que la hauteur des ondulations des l'onde est réduite sur une région comprenant au moins un bord de l'onde et/ou l'angle formé par les ondulations est modifié (de préférence réduit) sur une région comprenant au moins un bord de l'onde par rapport à l'angle formé par les ondulations dans une région centrale de l'onde.
- tous les sommets convexes des deux réglettes ont une hauteur réduite dans une ou chaque région non rectiligne ;
- ladite réduction de hauteur est progressive à partir de ladite région rectiligne adjacente ;
- on perfore la bande avant d'effectuer le pliage-emboutissage ;
- on effectue un recuit de la bande avant son pliage-emboutissage, au moins dans les régions de cette bande qui correspondent aux régions non rectilignes de la ligne directrice ;
- on effectue le recuit près avoir perforé la bande ;
- la ligne directrice a une partie principale rectiligne et au moins une partie d'extrémité incurvée qui se termine sensiblement perpendiculairement aux bords de l'onde.
- la ligne directrice a une forme en S allongé, avec une partie principale rectiligne et deux parties d'extrémité incurvées qui se terminent sensiblement perpendiculairement aux bords de l'onde ;
- le profil est en zig-zag à côtés sensiblement rectilignes ;
- le procédé comprend l'étape de faire avancer la bande de matière métallique en feuille (17) par pas successifs entre les réglettes en position d'ouverture de celles-c ; et,
- l'onde est une onde de garnissage ondulé-croisé.
- the active surfaces of the strips are formed such that the height of the waves of the wave is reduced over a region comprising at least one edge of the wave and / or the angle formed by the waves is modified (preferably reduced) on a region comprising at least one edge of the wave with respect to the angle formed by the undulations in a central region of the wave.
- all the convex vertices of the two strips have a reduced height in one or each non-rectilinear region;
- said height reduction is progressive from said adjacent rectilinear region;
- the web is perforated before folding and stamping;
- annealing of the web prior to its bending-stamping, at least in regions of this web that correspond to the non-rectilinear regions of the guideline;
- the annealing is carried out after having perforated the band;
- the guideline has a rectilinear main portion and at least one curved end portion that terminates substantially perpendicular to the edges of the wave.
- the guideline has an elongated S-shape, with a rectilinear main portion and two curved end portions that terminate substantially perpendicular to the edges of the wave;
- the profile is zig-zag with substantially rectilinear sides;
- the method comprises the step of advancing the strip of sheet metal material (17) in successive steps between the strips in the open position thereof; and,
- the wave is a wave of cross-corrugated packing.
L'invention a également pour objet un dispositif selon la revendication 11.The invention also relates to a device according to
Des exemples de mise en oeuvre de l'invention vont maintenant être décrits en regard des dessins annexés, sur lesquels :
- la Figure 1 représente en perspective une onde réalisée conformément à l'invention ;
- la Figure 2 représente en perspective deux réglettes de pliage-emboutissage pour la fabrication de cette onde ;
- la Figure 3 est une vue en plan de l'onde en cours de fabrication;
- les Figures 4 et 5 sont des vues prises respectivement suivant les lignes IV-IV et V-V de la Figure 3, illustrant la fabrication de l'onde ;
- la Figure 6 est une vue en bout correspondante, suivant la flèche VI de la Figure 3 ;
- la Figure 7 est une vue analogue à la Figure 6 d'une variante ;
- les Figures 8 et 9 sont des vues agrandies, respectivement, des détails VIII de la Figure 8 et IX de la Figure 7 ;
- la Figure 10 représente schématiquement une autre variante du procédé de l'invention ; et
- la Figure 11 représente schématiquement une partie d'une colonne de distillation d'air suivant l'invention.
- Figure 1 shows in perspective a wave made according to the invention;
- Figure 2 shows in perspective two fold-stamping strips for the manufacture of this wave;
- Figure 3 is a plan view of the wave during manufacture;
- Figures 4 and 5 are views taken respectively along the lines IV-IV and VV of Figure 3, illustrating the manufacture of the wave;
- Figure 6 is a corresponding end view, along the arrow VI of Figure 3;
- Figure 7 is a view similar to Figure 6 of a variant;
- Figures 8 and 9 are enlarged views, respectively, of details VIII of Figure 8 and IX of Figure 7;
- Figure 10 schematically shows another variant of the method of the invention; and
- Figure 11 schematically shows a portion of an air distillation column according to the invention.
L'onde 1 représentée à la Figure 1, supposée dans un plan général horizontal, est une feuille métallique mince pliée en aluminium, cuivre ou acier inoxydable qui présente deux bords latéraux parallèles 2 et 3. Chaque bord forme un profil répétitif 4 en zig-zag à côtés 5 sensiblement rectilignes, avec des sommets supérieurs 6 et inférieurs 7 de rayon aussi petit que possible.The wave 1 shown in FIG. 1, assumed in a horizontal general plane, is a folded thin metal foil made of aluminum, copper or stainless steel which has two parallel lateral edges 2 and 3. Each edge forms a zig-zag repeating profile 4. zag 5 substantially rectilinear sides, with upper tops 6 and lower 7 radius as small as possible.
L'onde est générée par le balayage du profil 4 parallèlement aux bords 2 et 3, suivant une ligne directrice 8. Cette ligne 8 (Figures 1 et 3) comporte sur la plus grande partie de sa longueur une partie courante 9 rectiligne, inclinée à 45° par rapport aux bords 2 et 3, et elle s'incurve à chaque extrémité suivant un arc 10 qui se termine sur le bord correspondant, sensiblement perpendiculairement à celui-ci. Les deux arcs 10 ont des concavités opposées, ce qui confère à la ligne 8 une forme générale en S allongé. L'onde comporte ainsi une série de sommets d'ondes, inférieurs et supérieurs, ayant la même forme en S allongé.The wave is generated by the scanning of the profile 4 parallel to the edges 2 and 3 along a directing line 8. This line 8 (FIGS. 1 and 3) has, over most of its length, a rectilinear running portion 9, inclined at 45 ° with respect to the edges 2 and 3, and it curves at each end along an
Alternativement seule une extrémité de la partie rectiligne 9 s'incurve suivant un arc 10 qui se termine sur le bord correspondant, sensiblement perpendiculairement à celui-ci.Alternatively only one end of the rectilinear part 9 curves in an
L'onde 1 est réalisée à partir d'une bande métallique mince plane par simple pliage-emboutissage au moyen d'un dispositif A qui comprend deux réglettes opposées, inférieure 11 et supérieure 12, à mouvement relatif alternatif de rapprochement-éloignement.The wave 1 is made from a thin flat metal strip by simple folding-stamping by means of a device A which comprises two opposite strips, lower 11 and upper 12, reciprocating relative movement of approach-away.
Chaque réglette comporte en direction de l'autre réglette deux dents, respectivement 13-14 et 15-16, dont les surfaces actives ont la forme tridimensionnelle de la face correspondante de l'onde, ces dents étant disposées de façon à s'interpénétrer. Les dents ont ainsi des génératrices qui comportent chacune une région principale rectiligne se prolongeant par des régions d'extrémités incurvées, et définissent quatre sommets convexes 13A à 16A et deux creux 13B et 15B de forme analogue.Each strip comprises, in the direction of the other strip, two teeth, respectively 13-14 and 15-16, whose active surfaces have the three-dimensional shape of the corresponding face of the wave, these teeth being arranged to interpenetrate. The teeth thus have generatrices which each comprise a rectilinear main region extending through curved end regions, and define four convex peaks 13A to 16A and two
Comme schématisé sur les Figures 4 à 6, la bande 17 de départ est avancée par pas suivant la flèche F, parallèlement à ces bords, au moyen d'un mécanisme d'avancement 18, pendant que les réglettes sont écartées l'une de l'autre, le pas d'avance étant égal au pas de l'ondulation. Après chaque avance, les réglettes sont rapprochées l'une de l'autre et déforment le métal, lequel emplit sensiblement la totalité de l'espace qui sépare les réglettes, comme illustré sur la Figure 8.As diagrammatically shown in FIGS. 4 to 6, the starting
Comme connu, et bien que ceci n'ait pas été représenté sur la Figure 3, le pliage-emboutissage provoque une déviation d'ensemble de la bande, vers le bas en considérant la Figure 3.As known, and although this has not been shown in FIG. 3, the bending-stamping causes an overall deflection of the strip, downwards considering FIG.
La fabrication de l'onde est ainsi réalisée rapidement, économiquement et de façon fiable.The manufacture of the wave is thus performed quickly, economically and reliably.
Comme connu en soi, la bande 17 peut être perforée avant son pliage, soit dans un poste de perforation séparé situé en amont du dispositif A, soit au sein même de ce dispositif.As known per se, the
Pour certains paramètres du profil 4 et de la ligne directrice 8, et/ou pour certains types de perforations de la bande 17, il peut être utile de recourir à la variante des Figures 7 et 9, qui permet de réduire l'allongement du métal au sommet des ondulations, dans les régions 10 où la ligne directrice 8 est incurvée.For certain parameters of the profile 4 and the guideline 8, and / or for certain types of perforations of the
Dans cette variante, dans les régions incurvées, les sommets convexes des dents 13A à 16A ont une hauteur réduite, comme représenté en 19, en trait mixte sur la Figure 8 et en trait plein sur la Figure 9. Plus précisément, par rapport à un plan horizontal de référence, le niveau du sommet de chaque dent diminue progressivement d'une valeur H, dans la partie rectiligne 9, à une valeur H-ΔH à l'emplacement du bord 2 ou 3.In this variant, in the curved regions, the convex peaks of the teeth 13A to 16A have a reduced height, as represented at 19, in phantom in Figure 8 and in solid lines in Figure 9. More precisely, with respect to a reference horizontal plane, the level of the vertex of each tooth gradually decreases from a value H, in the rectilinear portion 9, to a value H-ΔH at the location of the edge 2 or 3.
Grâce à cette modification, le métal est moins sollicité dans ses régions toriques, où il subsiste un espace libre entre lui-même et au moins l'une des deux réglettes en position de fermeture de celles-ci, comme représenté sur la Figure 9.With this modification, the metal is less stressed in its toric regions, where there remains a free space between itself and at least one of the two strips in the closed position thereof, as shown in Figure 9.
L'onde 1 peut posséder alors une hauteur légèrement réduite près de ses bords, ce qui ne présente pas d'inconvénient particulier pour les modules de garnissage résultants.The wave 1 may then have a slightly reduced height near its edges, which does not have any particular disadvantage for the resulting packing modules.
La variante de la Figure 10 utilise d'autres moyens pour faciliter la mise en forme des régions 10. Dans cas, on ne limite pas l'allongement du métal comme dans la variante précédente, mais on en modifie les propriétés physiques pour permettre cet allongement dans de bonnes conditions.The variant of Figure 10 uses other means to facilitate the shaping of the
Pour cela, on prévoit un poste B de recuit du métal en amont du poste A de pliage-emboutissage. Le recuit intéresse au moins les régions marginales de la bande 17 dans lesquelles seront formées les régions 10, et éventuellement la totalité de la bande.For this, there is provided a metal annealing station B upstream of the station A folding-stamping. The annealing concerns at least the marginal regions of the
Cette variante s'applique plus particulièrement aux ondes perforées. Dans ce cas, comme illustré, le poste B se trouve entre le poste C de perforation et la poste A de pliage-emboutissage. Or le poste B peut se trouver en amont du poste C.This variant applies more particularly to perforated waves. In this case, as illustrated, station B is located between the perforation station C and the station A of folding-pressing. But station B can be upstream of station C.
Comme on le comprend, l'invention permet de réaliser des ondes ayant des ondulations de formes très variées à partir de feuilles lisses ou structurées (par exemple gaufrées), ce qui permet d'améliorer les propriétés des garnissages ondulés-croisés résultants. De plus, l'invention s'applique à d'autres types de garnissages structurés, par exemple aux garnissages à ventilateurs. Ces garnissages, dont des exemples sont décrits dans les WO-A-86/06 296 et 90/10 497 ainsi que dans EP-A-845 293, définissent après pliage-emboutissage et empilage un ensemble de couches de ventilateurs fixes de brassage de fluide. Dans ce cas, c'est la surface générale de chaque onde qui est conforme à la définition indiquée plus haut.As can be understood, the invention makes it possible to produce waves having very varied shapes of corrugations from smooth or structured (for example embossed) sheets, which makes it possible to improve the properties of the resultant criss-cross packings. In addition, the invention is applicable to other types of structured packings, for example to fan packings. These packings, examples of which are described in WO-A-86/06296 and 90/10497 as well as in EP-A-845 293, define, after folding-stamping and stacking, a set of layers of fixed fans for stirring. fluid. In this case, it is the general surface of each wave which conforms to the definition indicated above.
On a représenté sur la Figure 11 une partie d'une colonne de distillation d'air 20, comprenant un tronçon de distillation 21 disposé dans la virole cylindrique 22 de la colonne. Le tronçon 21 est constitué par un garnissage ondulé-croisé lui-même formé d'un empilement de modules de garnissage 23. Chaque module 23 est constitué d'un empilement d'ondes 1, situées chacune dans un plan général vertical, coupées à longueur à partir de la bande 17 pliée et dont les directions générales d'ondulation sont inversées d'une onde à l'autre, les bords 2 et 3 étant disposés horizontalement. Chaque module 22 est tourné de 90° par rapport au module suivant autour de l'axe vertical X-X de la colonne.There is shown in Figure 11 a portion of an
Claims (14)
- Method of manufacturing, from a strip (17) of sheet material, a structured packing corrugation (1), the overall surface of which is generated substantially by sweeping a repetitive profile (4) parallel to the edges (2, 3) of the strip, along a directrix (8) which is non-rectilinear over at least part of its length and having a main orientation which is oblique with respect to the edges of the strip, in which a folding-pressing operation is carried out on the strip (17) in successive steps, by means of two opposed dies (11, 12) with a relative movement alternating between coming together and moving apart, these dies having active surfaces (11, 12) which are substantially conjugate with the two faces of the corrugation, characterized in that the strip is made of metal and in that, in at least one non-rectilinear region, at least some convex apexes (13A to 16A) of at least one die (11, 12) have a reduced height compared with that of an adjacent rectilinear region.
- Method according to Claim 1, characterized in that all the convex apexes of the two dies (11, 12) have a reduced height in each or one non-rectilinear region.
- Method according to Claim 1 or 2. characterized in that the said reduction in height is progressive from the said adjacent rectilinear region.
- Method according to any one of Claims 1 to 3, characterized in that the strip (17) is perforated before the folding-pressing operation is carried out.
- Method according to any one of Claims 1 to 4, characterized in that the strip (17) is annealed before it undergoes folding-pressing, at least in the regions of this strip which correspond to the non-rectilinear regions (10) of the directrix (8).
- Method according to any one of Claims 1 to 5, characterized in that the directrix (8) has a rectilinear main part (9) and at least one curved end part (10) which ends substantially perpendicular to the edges (2, 3) of the corrugation (1).
- Method according to Claim 6, characterized in that the directrix (8) has an elongate S-shape, with a rectilinear main part (9) and two curved end parts (10) which end substantially perpendicular to the edges (2, 3) of the corrugation (1).
- Method according to any one of Claims 1 to 7, characterized in that the profile (4) is zig-zag shaped with substantially rectilinear sides (5).
- Method according to any one of claims 1 to 8, characterized in that the corrugation (1) is a cross-corrugated packing corrugation.
- Method according to any one of claims 1 to 9, comprising the step of making the sheet-metal strip (17) advance in successive steps between the dies in the open position thereof.
- Device for implementing the method according to any one of Claims 1 to 10, characterized in that it comprises two opposed bending-drawing dies (11, 12), the generatrices of which comprise at least one non-rectilinear part and means to move these dies with a relative movement alternating between coming together and moving apart, characterised in that it comprises means (18) to make a strip (17) of sheet material advance in successive steps between the dies in the open position thereof and in that, in at least one non-rectilinear region, at least some convex apexes (13A to 16A) of at least one die (11, 12) have a height which progressively decreases from an adjacent rectilinear region.
- Device according to Claim 11, characterized in that all the convex apexes of the two dies (11, 12) have a height which progressively decreases in one or each non-rectilinear region.
- Device according to Claim 11 or 12, characterized in that it comprises means (B) for annealing the strip (17) at least in the region or regions thereof intended to be folded in a non-rectilinear manner, these annealing means being located upstream of the dies (11, 12).
- Device according to Claim 13, characterized in that the said annealing means (B) are located downstream or upstream of the perforation means (C) .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0101805A FR2820654B1 (en) | 2001-02-09 | 2001-02-09 | METHOD AND DEVICE FOR MANUFACTURING A STRUCTURED TRIM WAVE, AND APPARATUS FOR TREATING FLUIDS THEREOF |
| FR0101805 | 2001-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1231051A1 EP1231051A1 (en) | 2002-08-14 |
| EP1231051B1 true EP1231051B1 (en) | 2006-03-29 |
Family
ID=8859850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02290285A Expired - Lifetime EP1231051B1 (en) | 2001-02-09 | 2002-02-06 | Method and apparatus for producing corrugated sheets and apparatus for treating fluids |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US7024907B2 (en) |
| EP (1) | EP1231051B1 (en) |
| JP (1) | JP4274731B2 (en) |
| CN (1) | CN1244417C (en) |
| AT (1) | ATE321651T1 (en) |
| CA (1) | CA2370342A1 (en) |
| DE (1) | DE60210237T2 (en) |
| FR (1) | FR2820654B1 (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004050230A (en) * | 2002-07-19 | 2004-02-19 | Uchiyama Mfg Corp | Press forming method for metal sheet |
| CN100342200C (en) * | 2003-07-01 | 2007-10-10 | 华为技术有限公司 | Method for producing heat exchanger heat transfer unit |
| DE10337073A1 (en) * | 2003-08-12 | 2005-03-10 | Linde Ag | Method and device for producing an ordered packing |
| JP2008501498A (en) * | 2004-06-01 | 2008-01-24 | ナムローゼ・フェンノートシャップ・ベーカート・ソシエテ・アノニム | Sintered sintered metal fiber media |
| ATE474714T1 (en) * | 2004-11-19 | 2010-08-15 | Jochen Pflug | SEMI-CLOSED THERMOPLASTIC HONEYCOMB, ITS PRODUCTION PROCESS AND PRODUCTION EQUIPMENT |
| KR100832094B1 (en) * | 2007-06-11 | 2008-05-27 | 심우중 | Corrugated cardboard and cardboard pallet |
| US8082770B2 (en) * | 2008-03-21 | 2011-12-27 | Remy Technologies, L.L.C. | Apparatus and method for forming wire loops for a dynamoelectric machine |
| FR2939339B1 (en) * | 2008-12-04 | 2011-03-18 | Air Liquide | METHOD AND DEVICE FOR MANUFACTURING A STRUCTURAL TRAP WAVE, AND APPARATUS FOR PROCESSING FLUIDS THEREFOR |
| CA2842247C (en) * | 2011-07-21 | 2017-10-31 | Sulzer Chemtech Ag | A sheet forming tool and a method for the manufacture of a corrugated sheet |
| US8720247B2 (en) * | 2011-11-22 | 2014-05-13 | Denso Corporation | Method for bending process and processing machine |
| JP6028671B2 (en) | 2013-04-24 | 2016-11-16 | トヨタ紡織株式会社 | Metal plate forming method and forming apparatus |
| JP6032115B2 (en) * | 2013-04-24 | 2016-11-24 | トヨタ紡織株式会社 | Metal plate forming method and forming apparatus |
| FR3025121B1 (en) * | 2014-08-28 | 2017-03-03 | Gaztransport Et Technigaz | FOLDING DEVICE AND METHOD FOR FORMING CORRUGATION IN AN ANGLE PIECE |
| US10479016B2 (en) * | 2015-01-26 | 2019-11-19 | Stephen J. Motosko | Polycarbonate panel having shallow bends |
| JP6798292B2 (en) * | 2016-12-07 | 2020-12-09 | トヨタ紡織株式会社 | Molding method and molding equipment for metal plates |
| US20220378190A1 (en) * | 2021-05-28 | 2022-12-01 | F.S.Korea Industries Inc. | Protection cover for cosmetic brush and its manufacturing method |
| CN114714673B (en) * | 2022-03-29 | 2024-01-02 | 青州市祥力轻工设备有限公司 | Continuous corrugated forming system for water curtain block paper tape |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL131987C (en) * | 1962-07-31 | |||
| NL300812A (en) * | 1963-02-07 | |||
| US3307387A (en) * | 1963-12-11 | 1967-03-07 | Rohr Corp | Method and apparatus for perforating and corrugating metallic ribbon |
| US3936340A (en) * | 1970-07-07 | 1976-02-03 | G. D. Searle & Co. | Method for making corrugated collimators for radiation imaging devices |
| DE2357892A1 (en) * | 1973-11-20 | 1975-05-22 | Siemens Ag | Honeycomb wall for screened room - S-shaped metal corrugations give good screening with mechanical strength |
| BE835140A (en) * | 1975-10-31 | 1976-02-16 | PROCESS FOR REPROFILING METAL CORRUGATED SHEETS AND PRESS FOR IMPLEMENTING THIS PROCESS | |
| US4450706A (en) * | 1982-02-08 | 1984-05-29 | Siemens Gammasonics, Inc. | Method and apparatus for forming collimator strips |
| SE454654B (en) * | 1986-09-24 | 1988-05-24 | Nordisk Kartro Ab | SET AND DEVICE FOR POSITIONING OF TOOLS RELATING TO A MATERIAL RANGE WITH REPEATED BASIC FORM |
| SE463082B (en) * | 1986-10-24 | 1990-10-08 | Nordisk Kartro Ab | DEVICE FOR PROFILING A STEP FORMATED MATERIAL COVER |
| US5168741A (en) * | 1990-11-20 | 1992-12-08 | Braunheim Stephen T | Method for forming a leading edge cover for jet engine blades |
| IT1306959B1 (en) * | 1999-01-15 | 2001-10-11 | Antonio Gigola | PROCESS AND PRESS FOR OBTAINING EUMIDIFYING DARKENING PANELS, IN PARTICULAR FOR POULTRY OR GREENHOUSE BREEDING, AND PANEL |
| US6357113B1 (en) * | 1999-11-04 | 2002-03-19 | Williams International Co., L.L.C. | Method of manufacture of a gas turbine engine recuperator |
-
2001
- 2001-02-09 FR FR0101805A patent/FR2820654B1/en not_active Expired - Fee Related
-
2002
- 2002-02-04 CA CA002370342A patent/CA2370342A1/en not_active Abandoned
- 2002-02-06 DE DE60210237T patent/DE60210237T2/en not_active Expired - Lifetime
- 2002-02-06 AT AT02290285T patent/ATE321651T1/en not_active IP Right Cessation
- 2002-02-06 EP EP02290285A patent/EP1231051B1/en not_active Expired - Lifetime
- 2002-02-07 JP JP2002030718A patent/JP4274731B2/en not_active Expired - Fee Related
- 2002-02-07 US US10/067,330 patent/US7024907B2/en not_active Expired - Lifetime
- 2002-02-08 CN CNB021045836A patent/CN1244417C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2370342A1 (en) | 2002-08-09 |
| DE60210237T2 (en) | 2006-12-28 |
| ATE321651T1 (en) | 2006-04-15 |
| FR2820654B1 (en) | 2003-09-26 |
| CN1244417C (en) | 2006-03-08 |
| CN1387964A (en) | 2003-01-01 |
| JP2002307109A (en) | 2002-10-22 |
| FR2820654A1 (en) | 2002-08-16 |
| JP4274731B2 (en) | 2009-06-10 |
| DE60210237D1 (en) | 2006-05-18 |
| US20020112811A1 (en) | 2002-08-22 |
| US7024907B2 (en) | 2006-04-11 |
| EP1231051A1 (en) | 2002-08-14 |
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