EP2240735B1 - Shutter having a swellable peripheral seal, and shutting system comprising it for a multiple-chamber furnace port - Google Patents
Shutter having a swellable peripheral seal, and shutting system comprising it for a multiple-chamber furnace port Download PDFInfo
- Publication number
- EP2240735B1 EP2240735B1 EP09710608.2A EP09710608A EP2240735B1 EP 2240735 B1 EP2240735 B1 EP 2240735B1 EP 09710608 A EP09710608 A EP 09710608A EP 2240735 B1 EP2240735 B1 EP 2240735B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air chamber
- shutter
- core
- inflation
- air
- 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.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/02—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge of multiple-chamber type with permanent partitions; Combinations of furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B13/00—Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
- F27B13/06—Details, accessories, or equipment peculiar to furnaces of this type
- F27B13/08—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
Definitions
- the invention relates to the field of so-called "rotating fire” chamber furnaces for the firing of carbonaceous blocks, more particularly carbon anodes and cathodes intended for the electrolytic production of aluminum, and the invention more particularly to provide a shutter for closing a chamber hollow chamber skylight, and a shutter system comprising at least one shutter, but preferably a plurality of shutters, according to the invention to optimize the shutter. sealing of the so-called "fire suction" zone, during the operation of a rotating furnace.
- the baking oven comprises two parallel casings, extending along a longitudinal axis along the length of the oven, only one of which is shown on the figure 1 and each comprising a carcass 1 with two lateral walls, longitudinal, vertical and parallel, on a bottom, which walls and bottom are lined internally with a heat insulation 2, each casing also comprising a succession of transverse chambers 3 separated from each other by transverse walls 4.
- Each chamber 3 is constituted, in its length, that is to say in the transverse direction of the oven, by the alternately juxtaposing cavities 5 open at their upper part to enable the loading of the carbonaceous blocks 6 to be cooked and the unloading of the cooled cooked blocks 6, and in which are stacked the carbonaceous blocks 6 to be cooked, and hollow partitions 7
- These partitions 7 of a chamber 3 are in the longitudinal extension of the hollow partitions 7 of the other chambers 3 of the same span, and these hollow partitions 7 are in communication with each other by dormers 8 at the upper part of their transverse wall facing longitudinal passages formed at this level in the transverse walls 4, so that the hollow partitions 7 form rows of longitudinal partitions, arranged parallel to the length of the furnace and in which will flow gaseous fluids (combustion air, combustible gases and gases and combustion fumes) for preheating and cooking the carbon blocks 6, then cooling them.
- gaseous fluids combustion air, combustible gases and gases and combustion fumes
- the hollow partitions 7 further comprise a baffle device 9 to elongate and distribute more uniformly the path of the flue gases or fumes, and a series of transverse spacers 10, distributed over their entire surface, to ensure the mechanical maintenance of their thin walls, as shown on the cuts of Figures 2a and 2b .
- the hollow partitions 7 are also provided, at their upper part, closable openings 11, said openings, formed in a crown block 12 of the corresponding chamber 3 of the furnace.
- the baffles 9 of the new generation partition 7 are distinguished from those of the partition 7 of the figure 2a , in that they allow the distribution of combustion gases throughout the partition without constituting an obstacle to the passage of gases.
- the shutters are introduced by shutters 11 so as to close skylights 8 of the partitions 7 of a chamber 3 of the oven, which requires to remove the removable lids of these openers 11.
- the shutters commonly used today in revolving furnaces are constituted by a fixed plate, or manually deployable, connected to a handling rod, which allows to engage a shutter in a hollow partition by doing so. go through a quarney and position it and hold it next to a skylight 8 to close.
- the positioning of the shutter in the partition 7 is to wedge the plate of the shutter against the skylight 8 of the gas passage. This positioning of the shutter is a delicate operation, because the reduced passage section of the aperture 11 offers little freedom of movement. With the aging of the hollow partitions 7, the shutter setting operation becomes more difficult and cases of infiltration of cold air become very common.
- the problem underlying the invention is to overcome the aforementioned drawbacks, while allowing a closure of the dormers with a seal at least as good as that provided by the inflatable bladder shutter of the state of the art, and suitable for ovens of this type whose hollow partitions are stiffened by staggered spacers, and, in general, the object of the invention is to provide a shutter more suitable than those known to the various requirements of practice.
- the handling operations and more particularly the phases of insertion and removal of the shutter in a partition through a quarl, are facilitated because performed while the air chamber is deflated, which also protects the room to air against frictional wear in contact with walls and walls.
- the peripheral seal formed by the air chamber completes the obstruction of the gas passage window ensuring a perfect seal, independently of the deformations of the partitions.
- the housing provided in the core for receiving the air chamber may be a peripheral groove formed in the periphery of the core and in which the air chamber arranged in protruding inflatable coil is retracted, in the inflated state, out of said groove to form the peripheral seal.
- the core of the shutter comprises two rigid plates of substantially the same planar shape, preferably elongated rectangular shapes with bevelled and metallic corners, fixed rigidly opposite and at a distance from each other. one of the other by spacers, and delimiting between them a housing which receives the inflatable air chamber and which opens peripherally between the two plates to allow the formation of the peripheral seal in the inflated state of said air chamber.
- the two plates of the core are advantageously fixed together removably, so as to allow the replacement of a damaged air chamber.
- a material which is substantially airtight and resistant to heat, to the temperatures and to the corrosive properties of the combustion gases and fumes, and which can be elastically deformable such as an elastomer material, a polyurethane sheet or a silicone rubber, and / or flexible, such as a NYLON® or PTFE fabric.
- the shutter is advantageously equipped with a device for retraction of the air chamber in the deflated state in the core.
- the retraction device may comprise at least one resiliently deformable return member, such as at least one elastic cord internal to the air chamber, or at least one elastic strap external to the air chamber. which is expanded by inflating the air chamber and elastically retracts to its state of relaxation, deflating the air chamber, by retracting said air chamber into the core.
- at least one resiliently deformable return member such as at least one elastic cord internal to the air chamber, or at least one elastic strap external to the air chamber.
- the retraction device may comprise a pantograph folding mechanism disposed in the air chamber so that the inflation of the latter causes the separation of two flanges connected to one another by at least one pantograph, and the opening of the pantograph or pantographs by compressing at least one return spring, the relaxation of which upon deflation of the air chamber causes the closing of the pantograph (s) and the folding of the inner tube into its housing in the soul.
- the shutter of the invention is preferably provided with a handling rod integral with the core, by a lower end portion of the stem, preferably slightly bent with respect to an upper end portion of the stem, is equipped with a guide rod and stall to facilitate the positioning of the shutter in the hollow wall and the setting of the shutter on said furnace.
- the handling rod is advantageously at least partially tubular and equipped, at one end of the tubular part, with a quick connector for connection to an inflation / deflation system with a supply of compressed air, the other end the tubular portion of the rod being connected to the interior of the air chamber.
- the shutter is also advantageously equipped with a device for visual control of the inflation pressure of the air chamber and if the handling rod is at least partially tubular, this visual control device is preferably a manometer mounted on the stem.
- the core of the shutter according to the invention is arranged so as to allow the wedging of the shutter against the base of the corresponding skylight, and / or between said base of the shutter. skylight and an internal spacer to the corresponding partition.
- the invention also relates to a closure system for closing off at least one hollow partition of a rotating furnace and which is characterized in that it comprises at least one shutter according to the invention and as defined herein. above, and a tube inflating / deflating system, comprising a coupling, preferably fast and self-sealing, connection to a compressed air supply, and connected to a pressure regulator, itself connected to a inflation or deflation selection valve connected, on the one hand, to the air chamber of said at least one shutter, for its inflation, via a safety valve and an individual manual control of inflation and deflation of said air chamber, and, secondly, a discharge venturi, connected to said air chamber by said individual control and a valve controlled by said selection valve, for selectively controlling the isolation of the venturi when the a tube is inflated, and the supply of the venturi compressed air to allow deflation of said air chamber by suction.
- a coupling preferably fast and self-sealing, connection to a compressed air supply
- a pressure regulator itself connected
- the shutter system according to the invention comprises a shutter according to the invention and as presented above respectively for each of the partitions. hollow of said oven chamber, the shutters being connected in parallel with the inflation / deflation valve and with the venturi of discharge of an inflation / deflation system common to the inner tubes of the shutters.
- the shutters are advantageously assembled on a common gateway, extending above said furnace chamber, and equipped with a respective support arm to support each shutter in the extended position of the corresponding hollow partition, and a connection to a compressed air distribution network and / or at least one air compressor for supplying the inflation / deflation system.
- the shutter 13 comprises a central core 14, rigid and sufficiently refractory to withstand the temperature of the gases and fumes circulating in the hollow partitions 7 and passing through the dormers 8, this rigid core 14, for example in a metal material, being of substantially rectangular shape elongated in plan, to be arranged facing a skylight 8 of a hollow wall 7 of the furnace, and thus close most of the gas passage section by this skylight 8.
- the shutter 13 also comprises an inflatable air chamber 15, visible on the figure 3b representing the shutter 13 with the air chamber 15 in the inflated state, wherein this air chamber 15 forms a peripheral pneumatic seal 16, which surrounds the central rigid core 14 over its entire perimeter, while in the deflated state, represented on the figure 3a , the air chamber 15 is not visible because retracted inside a housing in the central core 14.
- the peripheral pneumatic seal 16 which protrudes around the periphery of the central core 14, completes the closure of the gas passage section by the skylight 8, which is mainly provided by the central core 14, as visible on the figure 3a .
- the skylight 8 is completely sealed, with sealing, in that the pneumatic peripheral seal 16 closes the clearance between the periphery of the central core 14 and the surrounding walls and walls of the hollow partition 7.
- the rigid core 14 consists of two metal plates 17a and 17b, of the same elongated rectangular shape with beveled or rounded tops, which are fixed facing and at a distance from one another by three tubular spacers 18, against the ends of which the plates 17a and 17b are fixed by screws 18a through washers 18b applied against the faces external plates 17a and 17b, and passing holes drilled in these plates to be screwed into the opposite ends threaded tubular spacers 18.
- the air chamber 15 is an airbag occupying the volume 19 delimited between the two plates 17a and 17b and wherein said air chamber 15 surrounds the spacers 18, each passing through a correspondingly shaped passageway 20 formed in the air chamber 15, shown in the inflated state on the figure 3c , so that its periphery constitutes the peripheral pneumatic seal 16 which protrudes out of the housing 19 between the plates 17a and 17b over the entire perimeter of these plates.
- the two plates 17a and 17b of the core 14 of the obturator 13 with inflatable air chamber 15 of the figure 3c are fixed together in a removable manner, so that in case of damage to the air chamber 15, it can be easily replaced, after unscrewing the screws 18a.
- the inflatable air chamber 15, whatever its state, inflated or deflated, is retained by the struts 18 in the housing 19.
- the air chamber 15 In the position of use of the shutter 13 (see figure 3b ), as the inflated air chamber is exposed, at least at the peripheral air seal 16, to gases and fumes which are relatively hot, the air chamber 15 must be made of a material which is not only substantially impervious to an inflation gas, in practice compressed air, but also substantially resistant to the heat, temperatures and corrosive properties of said combustion gases and fumes, at the hollow partitions 7 of the chamber 3 including skylights 8 must be closed.
- an elastically deformable membrane made, for example, of an elastomeric material or of a polyurethane sheet or of a silicone rubber, or else a flexible membrane, for example a textile structure such as a textile fabric.
- NYLON® or PTFE or in NOMEX®, or a composite membrane made of a polyurethane or silicone matrix reinforced by a textile reinforcement, for example fabric or non-woven NYLON® or PTFE. It can also be a sheet of flexible textile structure covered with a coating of NOMEX®, NYLON® or PTFE.
- the shutter 13 also comprises a handling rod 21, a so-called lower end portion 21a is integral with the rigid core 14 of the shutter 13, so that an operator can maneuver the opposite end portion said upper 21b of this rod 21 to pass the core 14 and the air chamber 15 deflated by a quarl 11 in the immediate vicinity of a skylight 8 to be closed, the introduction of the shutter 13 in the corresponding hollow partition 7, or to removal of the shutter 13 of this partition 7, as well as to operate the shutter 13 in the partition 7 and position it appropriately opposite the skylight 8, the air chamber 15 is still deflated, and retracted or retracted into the housing 19 between the two plates 17a and 17b of the core 14, not only to facilitate these handling operations in the insertion, removal or positioning of the shutter 13, but also to protect the air chamber 15 deflated against chafing and tearing in contact with walls, walls, spacers 10 and shutters 11.
- the rod 21 is slightly bent between its lower end portions 21a and 21b upper, which facilitates the positioning of the core 14 inclined and facing the skylight 8 (see figure 3a ), the structure of the core 14 with its two plates 17a and 17b spaced being favorable to a support and a good wedging of the lower end of the shutter 13, in the position of use, by overlapping a ridge on the base 8a of the dormer 8, and while the core 14 extends between the base 8a skylight 8, spacers 8b which subdivide this skylight 8 in several passages, on one side, and on the other side, a spacer 10 internal to the corresponding hollow partition 7.
- the upper end portion 21b rod which always protrudes out of the quarlet 11 when the shutter 13 is in a good use position, is equipped with a guide rod 22 and wedging, which facilitates the positioning of the shutter 13 by the operator in the hollow partition 7, in particular for the small rotational movements about the axis of the upper end portion of the rectilinear rod 21b, and which also facilitates the setting of the shutter 13 in use position on the oven, as shown in the figures 3a and 3b , by pressing the cane 22 on the crown block 12.
- Inflation and deflation of the air chamber 15 are provided by the handling rod 21, which is tubular over its entire length, and which is connected to the inside of the air chamber 15 by a sealing connection connecting the end. lower part of the rod 21 to the air chamber 15, while the upper end of this rod 21 is equipped with a self-closing fast connector 23, for the selective connection of the air chamber 15 of the shutter 13 to a supply of compressed air, for inflation, and the atmosphere, for deflation.
- This quick coupling 23 allows, as represented on the figure 4 , to connect a compressed air supply 24 to a system 25 for inflating / deflating the air chamber 15 of the shutter 13 of the Figures 3a to 3c to form a shutter system for a hollow partition window 8, in which the inflating / deflating system 25 can be integrated into the shutter 13 being supported directly by its handling rod 21 and / or its rod 22. guiding and wedging.
- the quick connector 23 connects the compressed air supply 24 to a filter 26 followed by a pressure regulator 27 of the type controlled by the supply pressure, itself connected to a first of the three channels of a valve 28 with two positions for selecting the inflating and deflating configurations of the air chamber 15.
- This valve 28 comprises a manual lever 29, the maneuver of which makes it possible to differentiate the inflation and deflation configurations.
- the pneumatic valve 28 is connected by a second channel to a safety valve 30, also controlled by its intake pressure, and itself connected to a valve or valve 31 for manual control of inflation or deflation of the air chamber 15, whose pressure inflation is indicated by a pressure gauge 32, fitted to the shutter 13, and for example mounted on its rod 21, as device or indicator visual control of the inflation pressure of the air chamber 15.
- this second channel of the selection valve 28 is also connected to the suction nozzle of a discharge venturi 33, via a controlled valve 34, controlled by the selection valve 28 so to be closed when the valve 28 is in the inflation configuration, and open when the valve 28 is in the deflation configuration.
- the third channel of the selection valve 28 is connected to the discharge venturi 33, so that in the deflation configuration of the selection valve 28, the latter supplies the discharge venturi 33 with compressed air, generating a negative pressure. discharge in the suction nozzle and the pipe coming from the pilot valve 34, the safety valve 30, the manual control 31 and the air chamber 15. It is understood that once the inflation or deflation configuration chosen at the selection valve 28, the operator manually actuates the control 31 to inflate the air chamber 15 with compressed air, or to deflate it through the discharge depression generated in the venturi 33 then supplied with air compressed by the selection valve 28.
- FIG. figure 5 And n together shutters 13 a, 13 b, ... 13 n -1 and 13 n, each of which is designed to close a window 8 of one of the n partitions crates7 respectively, 7b, ... 7 n -1 and 7 n of the chamber 3 concerned.
- shutters 13 a, 13 b, ... 13 n -1 and 13 n each of which is designed to close a window 8 of one of the n partitions crates7 respectively, 7b, ... 7 n -1 and 7 n of the chamber 3 concerned.
- These shutters each identical to that described above and shown schematically on the Figures 3a to 3c , are assembled on a common gateway closure whose mechanical structure is schematically represented at 35 on the figure 5 And extends over the chamber 3 of the oven, that is to say transversely above the hollow partitions 7 a to 7 n.
- This shutter gateway 35, the air chambers 15 of inflatable obturators 13 a-13 n and individual manual control of inflation or deflation 31a to 31 n are respectively connected in parallel, via the safety valve 30, on the one hand to the selection valve 28 with manual lever 29 and, on the other hand, to the venturi of discharge 33 of an inflation / deflation system 25 which is common to all the air chambers 15 of the shutters 13 a to 13 n and which constitutes a general pneumatic control system mounted on the bridge 35, which is furthermore equipped with a support arm (not shown) for supporting each respective shutter 13 a to 13 n, when the shutter is out of the hollow wall 7 a to 7 n corresponding, to facilitate movement of the shutter gateway 35 carrying with it all the shutters 13 a to 13 n and their general inflation / deflation control system 25, supplied from a compressed air distribution network by a connection such as 23 or by at least one air compressor, mounted on the gateway of FIG. shutter 35, to provide a main supply or backup of the system 25 compressed air.
- the air chamber 15 is equipped with a retraction device, two embodiments of which comprise resiliently deformable return members, are schematically represented on the Figures 6a and 6b .
- this retraction device comprises, for example, five elastic beads 36, each of which is an elastic ring bonded against the inner face of the air chamber 15, so that these rings 36 are expanded, by elastic deformation, by inflating the air chamber 15 between the two plates 17a and 17b, and that, upon deflation of the air chamber 15, the cords 36 retract elastically to their state of relaxation, and participate in the deflation of the air chamber 15 which is thus entirely retracted inside the housing 19 between the two plates 17a and 17b. It is understood that the elastic retraction of the cords 36 assists the discharge venturi 33 deflation.
- the device for retraction of the air chamber 15 comprises, as elastically deformable return members, a set of external elastic strips 37, which surround the air chamber 15 to retract during deflation, after their expansion by elastic deformation when inflating this air chamber 15.
- the retraction device comprises a pantograph folding mechanism, shown deployed on the Figure 6c when the air chamber 15 is inflated, and folded over the figure 6d , by retracting the air chamber 15 between the plates 17a and 17b of the core 14.
- This mechanism comprises, for example, two rigid flanges 38a and 38b, parallel and spaced from each other, fixed on the inner edges of the air chamber 15, and connected to one another by a pantograph 39 with two compasses and a simple compass 40, the pantograph 39 dams as the compass 40 being hinged to pivot about parallel pivots between them and in the plane of the flanges 38a and 38b, and perpendicular to a central axis 41 of the mechanism itself secured to the plates 17a and 17b, on which the arms of the pantograph 39 and the compass 40 are also pivotable and around which are mounted helical springs 42 compressed against stops 43 by the axial displacement of the central axis 41 when the two flanges 38a and 38b deviate from one another to the inflation of the air chamber 15, because of the opening of the compass 40 and two compasses constituting the pantograph 39.
- the relaxation of the springs 42 previously compressed by the inflation causes the closure of the pantograph 39 and the compass 40, which controls the bringing together of the two flanges 38a and 38b of one another and the folding of the air chamber 15 in its housing 19 in the core 14.
- the folding mechanism of the inner edges of the air chamber may be completed by a folding mechanism of the lower and upper edges 38c and 38d consisting of a return rod 44 connected to the return spring 45 compressed against the abutment 46 itself secured to one of the plates of the shutter 17a or 17b.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Air-Flow Control Members (AREA)
Description
L'invention concerne le domaine des fours à chambres dits à « feu tournant », pour la cuisson de blocs carbonés, plus particulièrement d'anodes et de cathodes en carbone destinées à la production par électrolyse de l'aluminium, et l'invention a plus particulièrement pour objet un obturateur pour obturer une lucarne de cloison creuse de four à chambres, ainsi qu'un système d'obturation comportant au moins un obturateur, mais de préférence une pluralité d'obturateurs, selon l'invention afin d'optimiser l'étanchéité de la zone dite « d'aspiration du feu », lors du fonctionnement d'un four à feu tournant.The invention relates to the field of so-called "rotating fire" chamber furnaces for the firing of carbonaceous blocks, more particularly carbon anodes and cathodes intended for the electrolytic production of aluminum, and the invention more particularly to provide a shutter for closing a chamber hollow chamber skylight, and a shutter system comprising at least one shutter, but preferably a plurality of shutters, according to the invention to optimize the shutter. sealing of the so-called "fire suction" zone, during the operation of a rotating furnace.
Des fours à feu tournant pour cuire des anodes sont décrits notamment dans les documents de brevet suivants :
Le four à cuire (FAC) comprend deux cuvelages parallèles, s'étendant selon un axe longitudinal sur la longueur du four, dont un seul est représenté sur la
Les cloisons creuses 7 comportent, en outre, un dispositif de chicanes 9 pour allonger et répartir plus uniformément le trajet des gaz ou fumées de combustion, et une série d'entretoises transversales 10, réparties sur toute leur surface, pour assurer le maintien mécanique de leur parois minces, comme représenté sur les coupes des
Pour isoler les cloisons 7 du four en amont des zones de cuisson, afin de permettre le transfert complet des fumées vers une rampe d'aspiration et éviter toute infiltration d'air froid à l'origine d'une baisse de rendement thermique et de la détérioration des équipements par corrosion issue de la fonnation de composés acides, des obturateurs sont introduits par des ouvreaux 11 de sorte à obturer des lucarnes 8 des cloisons 7 d'une chambre 3 du four, ce qui impose de retirer les couvercles amovibles de ces ouvreaux 11.To isolate the
Les obturateurs communément utilisés aujourd'hui dans les fours à feu tournant sont constitués d'une plaque fixe, ou déployable manuellement, reliée à une tige de manutention, qui permet d'engager un obturateur dans une cloison creuse en le faisant passer par un ouvreau et de le positionner puis le maintenir en regard d'une lucarne 8 à obturer.The shutters commonly used today in revolving furnaces are constituted by a fixed plate, or manually deployable, connected to a handling rod, which allows to engage a shutter in a hollow partition by doing so. go through a quarney and position it and hold it next to a
Le positionnement de l'obturateur dans la cloison 7 consiste à caler la plaque de l'obturateur contre la lucarne 8 de passage des gaz. Ce positionnement de l'obturateur est une opération délicate, car la section de passage réduite de l'ouvreau 11 offre peu de liberté de mouvement. Avec le vieillissement des cloisons creuses 7, l'opération de calage de l'obturateur devient plus difficile et les cas d'infiltration d'air froid deviennent très fréquents.The positioning of the shutter in the
Par les brevets
Le problème à la base de l'invention est de remédier aux inconvénients précités, tout en permettant une obturation des lucarnes avec une étanchéité au moins aussi bonne que celle procurée par l'obturateur à vessie gonflable de l'état de la technique, et en convenant aux fours de ce type dont les cloisons creuses sont rigidifiées par des entretoises en quinconce, et, de manière générale, le but de l'invention est de proposer un obturateur convenant mieux que ceux qui sont connus aux diverses exigences de la pratique.The problem underlying the invention is to overcome the aforementioned drawbacks, while allowing a closure of the dormers with a seal at least as good as that provided by the inflatable bladder shutter of the state of the art, and suitable for ovens of this type whose hollow partitions are stiffened by staggered spacers, and, in general, the object of the invention is to provide a shutter more suitable than those known to the various requirements of practice.
A cet effet, l'invention a pour objet un obturateur à joint d'étanchéité gonflable pour lucarne de cloison creuse de four à chambres dit « à feu tournant », qui se caractérise en ce qu'il comprend :
- une âme rigide, de forme sensiblement rectangulaire allongée, destinée à être disposée en regard d'une lucarne de cloison creuse dudit four, afin d'obturer la majeure partie de la section de passage de gaz par ladite lucarne, et
- au moins une chambre à air gonflable, escamotée à l'état dégonflé dans un logement de l'âme, et format, à l'état gonflé, un joint d'étanchéité périphérique, faisant saillie autour du pourtour de l'âme, que ledit joint entoure sur toute sa périphérie afin de compléter l'obturation de ladite lucarne.
- a rigid core, of substantially elongated rectangular shape, intended to be arranged opposite a hollow partition window of said furnace, in order to close most of the gas passage section by said dormer, and
- at least one inflatable air chamber, retracted in a deflated state in a housing of the core, and in the inflated state, a peripheral gasket protruding around the periphery of the core, that said seal surrounds around its periphery to complete the closure of said skylight.
Ainsi, à l'état gonflé de la chambre à air, la majeure partie de la section de passage des gaz par la lucarne est obturée par l'âme de l'obturateur, tandis que le joint d'étanchéité périphérique gonflé ainsi réalisé obture le reste de la section de passage des gaz constitué par le jeu périphérique entre l'âme et les parois latérales de la cloison creuse, la base de la lucarne et la paroi supérieure de la cloison creuse.Thus, in the inflated state of the air chamber, most of the gas passage section through the skylight is closed by the core of the shutter, while the swollen peripheral gasket thus formed closes the the remainder of the gas passage section constituted by the peripheral clearance between the core and the side walls of the hollow partition, the base of the dormer and the upper wall of the hollow partition.
Les opérations de manutention, et plus particulièrement les phases d'insertion et de retrait de l'obturateur dans une cloison à travers un ouvreau, sont facilitées car effectuées alors que la chambre à air est dégonflée, ce qui permet également de protéger cette chambre à air contre l'usure par frottement au contact des murs et parois.The handling operations, and more particularly the phases of insertion and removal of the shutter in a partition through a quarl, are facilitated because performed while the air chamber is deflated, which also protects the room to air against frictional wear in contact with walls and walls.
A l'état gonflé, le joint d'étanchéité périphérique formé par la chambre à air complète l'obstruction de la lucarne de passage des gaz en assurant une parfaite étanchéité, indépendamment des déformations des cloisons.In the inflated state, the peripheral seal formed by the air chamber completes the obstruction of the gas passage window ensuring a perfect seal, independently of the deformations of the partitions.
Dans un premier mode de réalisation, le logement prévu dans l'âme pour recevoir la chambre à air peut être une gorge périphérique ménagée dans le pourtour de l'âme et dans laquelle s'escamote la chambre à air agencée en boudin gonflable faisant saillie, à l'état gonflé, hors de ladite gorge pour former le joint d'étanchéité périphérique.In a first embodiment, the housing provided in the core for receiving the air chamber may be a peripheral groove formed in the periphery of the core and in which the air chamber arranged in protruding inflatable coil is retracted, in the inflated state, out of said groove to form the peripheral seal.
Dans une forme de réalisation de structure avantageusement plus simple et plus économique, l'âme de l'obturateur comprend deux plaques rigides sensiblement de même forme en plan, de préférence rectangulaires allongées à coins biseautés et métalliques, fixées rigidement en regard et à distance l'une de l'autre par des entretoises, et délimitant entre elles un logement qui reçoit la chambre à air gonflable et qui s'ouvre périphériquement entre les deux plaques pour autoriser la formation du joint d'étanchéité périphérique à l'état gonflé de ladite chambre à air.In an embodiment of a structure which is advantageously simpler and more economical, the core of the shutter comprises two rigid plates of substantially the same planar shape, preferably elongated rectangular shapes with bevelled and metallic corners, fixed rigidly opposite and at a distance from each other. one of the other by spacers, and delimiting between them a housing which receives the inflatable air chamber and which opens peripherally between the two plates to allow the formation of the peripheral seal in the inflated state of said air chamber.
Dans cette réalisation, les deux plaques de l'âme sont avantageusement fixées entre elles de manière démontable, de sorte à permettre le remplacement d'une chambre à air endommagée.In this embodiment, the two plates of the core are advantageously fixed together removably, so as to allow the replacement of a damaged air chamber.
Pour réaliser la chambre à air, on utilise un matériau sensiblement étanche à l'air et résistant à la chaleur, aux températures et aux propriétés corrosives des gaz et fumées de combustion, et pouvant être élastiquement déformable, tel qu'une matière élastomère, une feuille de polyuréthane ou un caoutchouc de silicone, et/ou souple, tel qu'un tissu en NYLON® ou en PTFE.In order to produce the inner tube, a material which is substantially airtight and resistant to heat, to the temperatures and to the corrosive properties of the combustion gases and fumes, and which can be elastically deformable, such as an elastomer material, a polyurethane sheet or a silicone rubber, and / or flexible, such as a NYLON® or PTFE fabric.
Pour garantir une excellente protection de la chambre à air, l'obturateur est avantageusement équipé d'un dispositif d'escamotage de la chambre à air à l'état dégonflé dans l'âme.To ensure excellent protection of the inner tube, the shutter is advantageously equipped with a device for retraction of the air chamber in the deflated state in the core.
Dans un premier mode de réalisation, le dispositif d'escamotage peut comprendre au moins un organe de rappel élastiquement déformable, tel qu'au moins un cordon élastique interne à la chambre à air, ou au moins une lanière élastique externe à la chambre à air, qui est mis(e) en expansion par le gonflage de la chambre à air et qui se rétracte élastiquement vers son état de relaxation, au dégonflage de la chambre à air, en escamotant ladite chambre à air dans l'âme.In a first embodiment, the retraction device may comprise at least one resiliently deformable return member, such as at least one elastic cord internal to the air chamber, or at least one elastic strap external to the air chamber. which is expanded by inflating the air chamber and elastically retracts to its state of relaxation, deflating the air chamber, by retracting said air chamber into the core.
Dans un autre mode réalisation, le dispositif d'escamotage peut comprendre un mécanisme de repli par pantographe, disposé dans la chambre à air de sorte que le gonflage de cette dernière provoque l'écartement de deux flasques reliés l'un à l'autre par au moins un pantographe, et l'ouverture du ou des pantographes en comprimant au moins un ressort de rappel, dont la détente au dégonflage de la chambre à air entraîne la fermeture du ou des pantographes et le repli de la chambre à air dans son logement dans l'âme.In another embodiment, the retraction device may comprise a pantograph folding mechanism disposed in the air chamber so that the inflation of the latter causes the separation of two flanges connected to one another by at least one pantograph, and the opening of the pantograph or pantographs by compressing at least one return spring, the relaxation of which upon deflation of the air chamber causes the closing of the pantograph (s) and the folding of the inner tube into its housing in the soul.
L'obturateur de l'invention est de préférence muni d'une tige de manutention solidaire de l'âme, par une partie d'extrémité inférieure de tige, de préférence faiblement coudée par rapport à une partie d'extrémité supérieure de tige, laquelle est équipé d'une canne de guidage et de calage afin de faciliter le positionnement de l'obturateur dans la cloison creuse et le calage de l'obturateur sur ledit four.The shutter of the invention is preferably provided with a handling rod integral with the core, by a lower end portion of the stem, preferably slightly bent with respect to an upper end portion of the stem, is equipped with a guide rod and stall to facilitate the positioning of the shutter in the hollow wall and the setting of the shutter on said furnace.
Dans ce cas, la tige de manutention est avantageusement au moins partiellement tubulaire et équipée, à une extrémité de la partie tubulaire, d'un raccord rapide de connexion à un système de gonflage/dégonflage avec une alimentation en air comprimé, l'autre extrémité de la partie tubulaire de la tige étant raccordée à l'intérieur de la chambre à air.In this case, the handling rod is advantageously at least partially tubular and equipped, at one end of the tubular part, with a quick connector for connection to an inflation / deflation system with a supply of compressed air, the other end the tubular portion of the rod being connected to the interior of the air chamber.
En outre, l'obturateur est également avantageusement équipé d'un dispositif de contrôle visuel de la pression de gonflage de la chambre à air et si la tige de manutention est au moins partiellement tubulaire, ce dispositif de contrôle visuel est de préférence un manomètre monté sur la tige.In addition, the shutter is also advantageously equipped with a device for visual control of the inflation pressure of the air chamber and if the handling rod is at least partially tubular, this visual control device is preferably a manometer mounted on the stem.
Dans tous les modes de réalisation, il est avantageux que l'âme de l'obturateur selon l'invention soit agencée de sorte à permettre le calage de l'obturateur contre la base de la lucarne correspondante, et/ou entre ladite base de la lucarne et une entretoise interne à la cloison correspondante.In all the embodiments, it is advantageous that the core of the shutter according to the invention is arranged so as to allow the wedging of the shutter against the base of the corresponding skylight, and / or between said base of the shutter. skylight and an internal spacer to the corresponding partition.
L'invention a également pour objet un système d'obturation, pour obturer au moins une lucarne de cloison creuse de four à feu tournant et qui se caractérise en ce qu'il comprend au moins un obturateur selon l'invention et tel que défini ci-dessus, et un système de gonflage/dégonflage de chambre à air, comportant un raccord, de préférence rapide et auto-obturant, de connexion à une alimentation en air comprimé, et relié à un régulateur de pression, lui-même relié à une vanne de sélection de gonflage ou dégonflage reliée, d'une part, à la chambre à air dudit au moins un obturateur, pour son gonflage, par l'intermédiaire d'une soupape de sécurité et d'une commande manuelle individuelle de gonflage et dégonflage de ladite chambre à air, et, d'autre part, à un venturi de décharge, connecté à ladite chambre à air par ladite commande individuelle et un clapet piloté par ladite vanne de sélection, pour commander sélectivement l'isolement du venturi lorsque la chambre à air est gonflée, et l'alimentation du venturi en air comprimé pour permettre le dégonflage de ladite chambre à air par aspiration.The invention also relates to a closure system for closing off at least one hollow partition of a rotating furnace and which is characterized in that it comprises at least one shutter according to the invention and as defined herein. above, and a tube inflating / deflating system, comprising a coupling, preferably fast and self-sealing, connection to a compressed air supply, and connected to a pressure regulator, itself connected to a inflation or deflation selection valve connected, on the one hand, to the air chamber of said at least one shutter, for its inflation, via a safety valve and an individual manual control of inflation and deflation of said air chamber, and, secondly, a discharge venturi, connected to said air chamber by said individual control and a valve controlled by said selection valve, for selectively controlling the isolation of the venturi when the a tube is inflated, and the supply of the venturi compressed air to allow deflation of said air chamber by suction.
Dans une forme préférée de réalisation, pour obturer les lucarnes des cloisons creuses d'une même chambre dudit four, le système d'obturation selon l'invention comprend un obturateur selon l'invention et tel que présenté ci-dessus respectivement pour chacune des cloisons creuses de ladite chambre du four, les obturateurs étant connectés en parallèle à la vanne de gonflage/dégonflage et au venturi de décharge d'un système de gonflage/dégonflage commun aux chambres à air des obturateurs.In a preferred embodiment, for closing the dormers of the hollow partitions of the same chamber of said furnace, the shutter system according to the invention comprises a shutter according to the invention and as presented above respectively for each of the partitions. hollow of said oven chamber, the shutters being connected in parallel with the inflation / deflation valve and with the venturi of discharge of an inflation / deflation system common to the inner tubes of the shutters.
Dans ce cas, pour faciliter les opérations d'avancement de feu, les obturateurs sont avantageusement rassemblés sur une passerelle d'obturation commune, s'étendant au-dessus de ladite chambre du four, et équipée d'un bras de support respectif pour supporter chaque obturateur en position sortie de la cloison creuse correspondante, et d'un raccord à un réseau de distribution d'air comprimé et/ou d'au moins un compresseur d'air pour l'alimentation du système de gonflage/dégonflage.In this case, to facilitate the fire advancement operations, the shutters are advantageously assembled on a common gateway, extending above said furnace chamber, and equipped with a respective support arm to support each shutter in the extended position of the corresponding hollow partition, and a connection to a compressed air distribution network and / or at least one air compressor for supplying the inflation / deflation system.
D'autres avantages et caractéristiques de l'invention ressortiront de la description donnée ci-dessous, à titre non limitatif, d'exemples de réalisation décrits en référence aux dessins annexés sur lesquels :
- la
figure 1 représente partiellement et schématiquement, en perspective et en coupe transversale avec arrachement, un cuvelage d'un four à feu tournant, - les
figures 2a et2b sont des vues en coupe longitudinale de deux réalisations de cloisons creuses pour four selon lafigure 1 , lesfigures 1, 2a et2b ayant déjà été décrites ci-dessus, - les
figures 3a et3b sont des vues partielles schématiques représentant un obturateur selon l'invention, positionné devant une lucarne à obturer, respectivement à l'état dégonflé du joint d'étanchéité périphérique sur lafigure 3a et à l'état gonflé de ce joint sur lafigure 3b , - la
figure 3c est une vue en perspective éclatée d'un exemple de réalisation de l'âme et de la chambre à air d'un obturateur selon l'invention, - la
figure 4 est une représentation schématique d'un système de gonflage/dégonflage pneumatique de la chambre à air d'un obturateur de l'invention, - la
figure 5 est une représentation schématique d'un système d'obturation comprenant autant d'obturateurs qu'une chambre du four comprend de cloisons et dont les chambres à air sont gonflées et dégonflées à l'aide d'un système de gonflage/dégonflage à air comprimé commun. - les
figures 6a et 6b représentent schématiquement deux dispositifs d'escamotage à organes de rappel élastiquement déformables, pour escamoter la chambre à air à l'état dégonflé dans l'âme, et - les
figures 6c et 6d représentent un dispositif d'escamotage de la chambre à air qui comprend un mécanisme à pantographe, dans les positions respectivement déployée et rentrée.
- the
figure 1 represents partially and schematically, in perspective and in cross-section with tearing, a casing of a rotating furnace, - the
Figures 2a and2b are views in longitudinal section of two embodiments of hollow partitions for furnace according to thefigure 1 , theFigures 1, 2a and2b having already been described above, - the
figures 3a and3b are partial schematic views showing a shutter according to the invention, positioned in front of a skylight to be closed, respectively in the deflated state of the peripheral seal on thefigure 3a and in the inflated state of this joint on thefigure 3b , - the
figure 3c is an exploded perspective view of an exemplary embodiment of the core and the inner tube of a shutter according to the invention, - the
figure 4 is a schematic representation of a pneumatic inflating / deflating system of the air chamber of a shutter of the invention, - the
figure 5 is a schematic representation of a shutter system comprising as many shutters as an oven chamber comprises partitions and whose air chambers are inflated and deflated using a compressed air inflation / deflation system common. - the
Figures 6a and 6b schematically represent two retraction devices with elastically deformable return members, to retract the air chamber in the deflated state in the core, and - the
Figures 6c and 6d represent a device for retraction of the air chamber which comprises a pantograph mechanism, in the respectively extended and retracted positions.
Comme représenté sur les
Ainsi, à l'état gonflé de la chambre à air 15, le joint d'étanchéité pneumatique périphérique 16, qui fait saillie autour du pourtour de l'âme centrale 14, vient compléter l'obturation de la section de passage des gaz par la lucarne 8, qui est principalement assurée par l'âme centrale 14, comme visible sur la
De manière pratique, comme représenté sur la
En position d'utilisation de l'obturateur 13 (voir
L'obturateur 13 comprend également une tige de manutention 21, dont une partie d'extrémité dite inférieure 21 a est solidaire de l'âme rigide 14 de l'obturateur 13, de sorte qu'un opérateur puisse manoeuvrer la partie d'extrémité opposée dite supérieure 21b de cette tige 21 pour faire passer l'âme 14 et la chambre à air 15 dégonflée par un ouvreau 11 à proximité immédiate d'une lucarne 8 à obturer, à l'introduction de l'obturateur 13 dans la cloison creuse 7 correspondante, ou au retrait de l'obturateur 13 de cette cloison 7, ainsi que pour manoeuvrer l'obturateur 13 dans la cloison 7 et le positionner de manière appropriée en regard de la lucarne 8, la chambre à air 15 étant toujours dégonflée, et rétractée ou escamotée dans le logement 19 entre les deux plaques 17a et 17b de l'âme 14, non seulement pour faciliter ces opérations de manutention à l'insertion, au retrait ou au positionnement de l'obturateur 13, mais également pour protéger la chambre à air 15 dégonflée contre l'usure par frottement et les déchirements au contact des murs, parois, entretoises 10 et ouvreaux 11.The
Pour faciliter ces manoeuvres, la tige 21 est légèrement coudée entre ses parties d'extrémités inférieure 21a et supérieure 21b, ce qui facilite le positionnement de l'âme 14 inclinée et en regard de la lucarne 8 (voir
De plus, la partie d'extrémité supérieure de tige 21b, qui fait toujours saillie hors de l'ouvreau 11 lorsque l'obturateur 13 est en bonne position d'utilisation, est équipée d'une canne 22 de guidage et de calage, qui facilite le positionnement de l'obturateur 13 par l'opérateur dans la cloison creuse 7, en particulier pour les petits mouvements de rotation autour de l'axe de la partie d'extrémité supérieure de tige 21b rectiligne, et qui facilite également le calage de l'obturateur 13 en position d'utilisation sur le four, comme représenté sur les
En position d'obturation complète de la lucarne 8 (
Le gonflage et le dégonflage de la chambre à air 15 sont assurés par la tige de manutention 21, qui est tubulaire sur toute sa longueur, et qui est reliée à l'intérieur de la chambre à air 15 par un raccord étanche raccordant l'extrémité inférieure de la tige 21 à la chambre à air 15, tandis que l'extrémité supérieure de cette tige 21 est équipée d'un raccord rapide auto-obturant 23, pour la connexion sélective de la chambre à air 15 de l'obturateur 13 à une alimentation en air comprimé, pour le gonflage, et à l'atmosphère, pour le dégonflage.Inflation and deflation of the
Ce raccord rapide 23 permet, comme représenté sur la
Sur la
Le raccord rapide 23 relie l'alimentation en air comprimé 24 à un filtre 26 suivi d'un régulateur de pression 27, du type piloté par la pression d'alimentation, lui-même relié à une première des trois voies d'une vanne 28 à deux positions de sélection des configurations de gonflage et dégonflage de la chambre à air 15. Cette vanne 28 comporte un levier manuel 29 dont la manoeuvre permet de différencier les configurations gonflage et dégonflage. Dans la configuration gonflage, la vanne pneumatique 28 est reliée par une deuxième voie à une soupape de sécurité 30, également pilotée par sa pression d'admission, et elle-même reliée à une vanne ou robinet 31 de commande manuelle de gonflage ou dégonflage de la chambre à air 15, dont la pression de gonflage est indiquée par un manomètre 32, équipant l'obturateur 13, et par exemple monté sur sa tige 21, à titre de dispositif ou indicateur de contrôle visuel de la pression de gonflage de la chambre à air 15.The
En parallèle, cette deuxième voie de la vanne de sélection 28 est également reliée à l'ajutage d'aspiration d'un venturi de décharge 33, par l'intermédiaire d'un clapet piloté 34, piloté par la vanne de sélection 28 de sorte à être fermé lorsque la vanne 28 est en configuration de gonflage, et ouvert lorsque la vanne 28 est en configuration de dégonflage.In parallel, this second channel of the
Enfin, la troisième voie de la vanne de sélection 28 est reliée au venturi de décharge 33, de sorte qu'en configuration de dégonflage de la vanne de sélection 28, cette dernière alimente le venturi de décharge 33 en air comprimé, générant une dépression de décharge dans l'ajutage d'aspiration et la conduite venant du clapet piloté 34, de la soupape de sécurité 30, de la commande manuelle 31 et de la chambre à air 15. On comprend qu'une fois la configuration de gonflage ou dégonflage choisie au niveau de la vanne de sélection 28, l'opérateur actionne manuellement la commande 31 pour gonfler la chambre à air 15 avec de l'air comprimé, ou pour la dégonfler grâce à la dépression de décharge générée dans le venturi 33 alors alimenté en air comprimé par la vanne de sélection 28.Finally, the third channel of the
Comme il est nécessaire d'obturer une lucarne 8 dans chacune des cloisons creuses 7 d'une même chambre 3 du four, une réalisation avantageuse du système d'obturation est représentée sur la
Dans l'installation de la
En outre, pour garantir, au dégonflage d'une chambre à air 15, un escamotage complet de cette chambre à air dans le logement 19 dans l'âme rigide 14 de l'obturateur 13 correspondant, la chambre à air 15 est équipée d'un dispositif d'escamotage, dont deux exemples de réalisation, comportant des organes de rappel élastiquement déformables, sont schématiquement représentés sur les
Sur la
Sur la
En plus de tels organes de rappel élastiquement déformables, ou à la place de ces derniers, il est possible que le dispositif d'escamotage comprenne un mécanisme de repli par pantographe, représenté déployé sur la
Bien entendu, d'autres variantes de dispositif de rétraction ou d'escamotage de la chambre à air à l'état dégonflé dans le logement de l'âme sont possibles et, sur l'installation de la
Claims (15)
- A shutter (13) with inflatable seal (16), for a port (8) of a hollow partition (7) of a multichamber (3) ring furnace, characterized in that it comprises:- a rigid core (4) of a substantially rectangular elongated shape, for placement next to a port (8) of a hollow partition (7) of said furnace in order to seal off the major portion of the flow area for the gas passing through said port (8), and- at least one inflatable air chamber (15), which is retracted into a housing (19) in the core (14) in its deflated state, and which forms a peripheral seal (16) protruding around the edge of the core (14) in its inflated state, such that said seal (16) extends along the entire periphery of the core (14) in order to complete the sealing off of said port (8).
- The shutter according to claim 1, characterized in that the housing (19) is a peripheral groove along the periphery of the core (14), into which the air chamber (15) retracts, said air chamber being an inflatable tube which in the inflated state protrudes outside said groove to form the peripheral seal (16).
- The shutter according to claim 1, characterized in that the core (14) comprises two rigid plates (17a, 17b), substantially of the same flat shape, rigidly fixed by spacers (18) to be apart from and facing one another, and delimiting between them a housing (19) which receives the inflatable air chamber (15) and which is peripherally open between the two plates (17a, 17b) to allow the formation of the peripheral seal (16) when said air chamber (15) is in the inflated state.
- The shutter according to claim 3, characterized in that the two plates (17a, 17b) of the core (14) are fixed to each other in a manner which can be disassembled for replacement of a damaged air chamber (15).
- The shutter (13) according to any of claims 1 to 4, characterized in that said air chamber (15) is made of a material that is substantially airtight and is resistant to heat and to the temperatures and corrosive properties of the combustion gases and fumes of the furnace, and is elastically deformable, such as an elastomer, a polyurethane sheet, or silicone rubber, and/or is flexible, such as NYLON® or PTFE fabric.
- The shutter according to any one of claims 1 to 5, characterized in that it is equipped with a device (36, 37) to retract the deflated air chamber (15) into the core (14).
- The shutter according to claim 6, characterized in that the retraction device comprises at least one elastically deformable return member (36, 37), such as at least one elastic cord (36) internal to the air chamber, or at least one elastic strap (37) external to the air chamber (15), which expands as the air chamber (15) is inflated and which elastically retracts to its relaxed state as the air chamber (15) is deflated, retracting said air chamber (15) into the core (14).
- The shutter according to claim 6, characterized in that the retraction device comprises a pantograph collapsing mechanism (39), arranged in the air chamber (15) such that the inflation of said air chamber causes two shields (38a, 38b) connected to each other by at least one pantograph (39) to move apart, and the opening of the pantograph or pantographs (39) compresses at least one return spring (42) which, when the air chamber (15) deflates, is released and causes the pantograph or pantographs (39) to close and the air chamber (15) to collapse into its housing (19) in the core (14).
- The shutter (13) according to any one of claims 1 to 8, characterized in that it is equipped with a maneuvering shaft (21) secured to the core (14), by a lower end portion (21a) of the shaft, preferably slightly angled relative to an upper end portion (21b) of the shaft which is equipped with a guide and brace piece (22) to facilitate positioning the shutter (13) inside the hollow partitions (7) and bracing the shutter (13) in place on said furnace.
- The shutter according to claim 9, characterized in that the maneuvering shaft (21) is at least partially tubular and is equipped at one end of the tubular portion with a quick coupling connector (23) for connecting to an inflation/deflation system (25) with a compressed air supply (24), the other end of the tubular portion of the shaft (21) being connected to the inside of the air chamber (15).
- The shutter according to either of claims 9 or 10, characterized in that it is equipped with a visual control device to monitor the inflation pressure of the air chamber (15), for example a gauge (32) mounted on the shaft (21).
- The shutter according to any one of claims 1 to 11, characterized in that the rigid core (14) is arranged to allow bracing the shutter (13) against the base (8a) of the corresponding port (8), and/or between said base (8a) of the port (8) and a spacer (10) internal to the corresponding partition (7).
- A sealing system for sealing off at least one port (8) of a hollow partition (7) of a multichamber (3) ring furnace, characterized in that it comprises at least one shutter (13) according to any one of claims 1 to 12, and an air chamber (15) inflation/deflation system (25), comprising a connector (23), preferably a quick coupling and self-sealing connector, for connecting to a compressed air supply (24), and connected to a pressure regulator (27), itself connected to an inflation/deflation selector valve (28) connected on the one hand to the air chamber (15) of said at least one shutter (13), for inflating it by means of a safety valve (30) and an individual manual control (31) of the inflation and deflation of said air chamber (15), and on the other hand to a discharge venturi (33), connected to said air chamber (15) by said individual control (31) and a pilot valve (34) controlled by said selector valve (28), for selectively controlling the isolation of the venturi (33) when the air chamber (15) is inflated and the supply of compressed air to the venturi (33) to permit said air chamber (15) to deflate by suction.
- The sealing system according to claim 13, for sealing off ports (8) of hollow partitions (7) of the same chamber (3) of said furnace, characterized in that it comprises a shutter (13a to 13n) respectively for each of the hollow partitions (7a to 7n) of said chamber (3), the shutter (13a to 13n) being connected in parallel to the inflation/deflation selector valve (28) and to the discharge venturi (33) of an inflation/deflation system (25) common to the air chambers (15) of the shutter (13a to 13n).
- The sealing system according to claim 14, characterized in that the shutters (13a to 13n) are placed together on a common sealing platform (35), extending above said furnace chamber (3) and equipped with a respective supporting arm to support each shutter (13a to 13n) positioned outside the corresponding hollow partition (7a to 7n), and with a connector (23) to a compressed air distribution network (24) and/or to at least one air compressor such that the inflation/deflation system (25) is supplied with air.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0850921A FR2927410B1 (en) | 2008-02-13 | 2008-02-13 | SHUTTER WITH INFLATABLE PERIPHERAL SEAL AND SHUTTER SYSTEM COMPRISING THE SAME FOR ROOM OVEN LUCARNE |
PCT/FR2009/050177 WO2009101330A1 (en) | 2008-02-13 | 2009-02-05 | Shutter having a swellable peripheral seal, and shutting system comprising it for a multiple-chamber furnace port |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2240735A1 EP2240735A1 (en) | 2010-10-20 |
EP2240735B1 true EP2240735B1 (en) | 2014-06-25 |
Family
ID=39577523
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09710608.2A Active EP2240735B1 (en) | 2008-02-13 | 2009-02-05 | Shutter having a swellable peripheral seal, and shutting system comprising it for a multiple-chamber furnace port |
Country Status (9)
Country | Link |
---|---|
US (1) | US8826900B2 (en) |
EP (1) | EP2240735B1 (en) |
CN (1) | CN101983309B (en) |
AU (1) | AU2009213961B2 (en) |
CA (1) | CA2713905C (en) |
FR (1) | FR2927410B1 (en) |
RU (1) | RU2480695C2 (en) |
WO (1) | WO2009101330A1 (en) |
ZA (1) | ZA201005607B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9534510B2 (en) * | 2011-03-07 | 2017-01-03 | Dynamis Energy, Llc | System and method for thermal chemical conversion of waste |
RU180116U1 (en) * | 2018-03-30 | 2018-06-04 | Общество с ограниченной ответственностью "КПД ИНЖИНИРИНГ" (ООО "КПД ИНЖИНИРИНГ") | FLIP DEVICE FOR INDUCTION FURNACE |
CN114361599B (en) * | 2021-12-29 | 2024-03-08 | 广州小鹏汽车科技有限公司 | Cell formation sealing member, cell formation device, and cell formation method |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3052265A (en) * | 1960-06-06 | 1962-09-04 | Shell Oil Co | Apparatus for closing pipelines |
US3593971A (en) * | 1969-07-16 | 1971-07-20 | Calvin C Blackman | Fluid inflatable seal |
US3706462A (en) * | 1970-05-28 | 1972-12-19 | Wallace B Lilly | Inflatable safety device |
US3804364A (en) * | 1971-07-28 | 1974-04-16 | Danfoss As | Bag diaphragms and bag diaphragm operated air dampers |
US3841256A (en) * | 1973-11-26 | 1974-10-15 | R Etchelecou | Device for temporarily sealing holes in boats |
GB1495559A (en) * | 1973-12-06 | 1977-12-21 | Atomic Energy Authority Uk | Use of sealing members in a method of explosively welding pipes together |
SU654843A1 (en) * | 1976-04-23 | 1979-03-30 | Предприятие П/Я А-1837 | Multibatch furnace for roasting carbon-containing materials and articles |
SE436302B (en) * | 1980-05-28 | 1984-11-26 | Nitro Nobel Ab | DEVICE FOR LOADING UPDATED DRILL HALLS WITH EXPLOSIVES |
US4373377A (en) * | 1980-10-27 | 1983-02-15 | United Technologies Corporation | Universal tail pipe connector |
NL178188C (en) * | 1980-10-29 | 1986-02-03 | Petroles Cie Francaise | VALVE. |
US4649896A (en) * | 1984-08-14 | 1987-03-17 | Formosa David J | Device for stopping air leakage through fireplace flues |
DE3760518D1 (en) | 1986-06-17 | 1989-10-05 | Pechiney Aluminium | Process and device to optimize the firing in an open chamber furnace for burning carbonaceous blocks |
FR2616525B1 (en) * | 1987-06-09 | 1989-09-08 | Pechiney Aluminium | DEVICE AND METHOD FOR SEALING THE PARTITIONS OF A ROTATING FIRE CHAMBER OVEN FOR COOKING CARBON BLOCKS |
WO1991019147A1 (en) | 1990-05-29 | 1991-12-12 | Alcoa Of Australia Limited | Method and apparatus for control of carbon baking furnaces |
DE4119709A1 (en) * | 1991-06-14 | 1992-12-17 | Maerz Ofenbau | OVEN FOR HEAT TREATMENT OF PIECE OF GOODS |
US5234374A (en) * | 1991-12-24 | 1993-08-10 | Mariusz Hyzyk | Air duct closure system |
US5601025A (en) * | 1992-09-23 | 1997-02-11 | Martin Marietta Energy Systems, Inc. | Robotic vehicle |
DE4315715C1 (en) * | 1993-05-11 | 1994-09-29 | Flucorrex Ag Flawil | Device for the leak-tight shutting off of a duct, opening etc. through which fluid flows, particularly in flues of firing systems |
US6004130A (en) * | 1997-08-06 | 1999-12-21 | Kaiser Aluminum & Chemical Corporation | Flue seal for a carbon anode baking furnace |
US6436335B1 (en) | 1997-08-25 | 2002-08-20 | Innovatherm Prof. Dr. Leisenberg Gmbh & Co. Kg | Method for controlling a carbon baking furnace |
FR2777072B1 (en) | 1998-04-03 | 2000-05-19 | Pechiney Aluminium | METHOD AND DEVICE FOR REGULATING ROTATING FIRE COOKING OVENS |
US6000323A (en) * | 1998-07-23 | 1999-12-14 | Schlegel; Dean J. | Trash compacting method and apparatus |
JP3784177B2 (en) | 1998-09-29 | 2006-06-07 | 株式会社沖データ | Driver IC |
US6059497A (en) * | 1999-08-25 | 2000-05-09 | Iannone; Pasquale A. | Air suspension apparatus for protecting a vehicle suspension and chassis during transport or storage |
EP1742003A1 (en) | 2005-07-04 | 2007-01-10 | Innovatherm Prof. Dr. Leisenberg GmbH & Co. KG | Method for running a process in an open anode firing furnace |
GB0516530D0 (en) * | 2005-08-11 | 2005-09-21 | Guest John Int Ltd | Improvements in or relating to liquid flow control devices |
CN2851879Y (en) * | 2005-11-24 | 2006-12-27 | 贵阳铝镁设计研究院 | Movable flue interface sealing structure |
FR2918164B1 (en) * | 2007-06-29 | 2009-09-25 | Solios Environnement Sa | METHOD OF MONITORING A SMOKE DUCT CONNECTING A COOKING FURNACE OF CARBON BLOCKS TO A FUME TREATMENT CENTER |
-
2008
- 2008-02-13 FR FR0850921A patent/FR2927410B1/en not_active Expired - Fee Related
-
2009
- 2009-02-05 AU AU2009213961A patent/AU2009213961B2/en not_active Ceased
- 2009-02-05 CA CA2713905A patent/CA2713905C/en not_active Expired - Fee Related
- 2009-02-05 WO PCT/FR2009/050177 patent/WO2009101330A1/en active Application Filing
- 2009-02-05 CN CN200980112396.6A patent/CN101983309B/en not_active Expired - Fee Related
- 2009-02-05 EP EP09710608.2A patent/EP2240735B1/en active Active
- 2009-02-05 US US12/866,275 patent/US8826900B2/en not_active Expired - Fee Related
- 2009-02-05 RU RU2010137860/02A patent/RU2480695C2/en not_active IP Right Cessation
-
2010
- 2010-08-05 ZA ZA2010/05607A patent/ZA201005607B/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2009101330A1 (en) | 2009-08-20 |
CN101983309B (en) | 2013-01-09 |
US20100313881A1 (en) | 2010-12-16 |
CA2713905A1 (en) | 2009-08-20 |
CN101983309A (en) | 2011-03-02 |
EP2240735A1 (en) | 2010-10-20 |
RU2480695C2 (en) | 2013-04-27 |
CA2713905C (en) | 2016-07-26 |
FR2927410B1 (en) | 2010-04-09 |
RU2010137860A (en) | 2012-03-20 |
FR2927410A1 (en) | 2009-08-14 |
ZA201005607B (en) | 2011-10-26 |
AU2009213961B2 (en) | 2013-03-28 |
AU2009213961A1 (en) | 2009-08-20 |
US8826900B2 (en) | 2014-09-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2069624B1 (en) | Removable air intake structure for turbojet engine nacelle | |
EP2240735B1 (en) | Shutter having a swellable peripheral seal, and shutting system comprising it for a multiple-chamber furnace port | |
EP0685321B1 (en) | Tyre assembling and vulcanizing | |
EP2344385B1 (en) | Turbojet engine nacelle with translatable upstream cowl | |
EP2179113B1 (en) | Flexible dual skin wall and device for tensioning a dual skin flexible wall | |
EP2829240B1 (en) | Surgical device | |
EP0312429A1 (en) | Inflatable double-walled multiple vaulted structure | |
EP3099967B1 (en) | Tool for working on the wall of a pipe and related method | |
CA2985826A1 (en) | Intermediate casing hub for an aircraft turbojet engine including a composite outlet pipe | |
FR2940398A1 (en) | SHUTTER FOR OPENING A JUNCTION TUBE OF AN ENCLOSURE AND A PIPE, IN PARTICULAR A STEAM GENERATOR OF A PRESSURE WATER REACTOR | |
FR2772814A1 (en) | Inflatable canopy roof | |
FR2721970A1 (en) | MULTIPLE GLAZING | |
FR2771451A1 (en) | PROTECTION DEVICE FOR REACTION ENGINE AIR INTAKE COVER, EQUIPPED WITH DEFROSTING SYSTEM | |
CA2740490A1 (en) | Turbojet engine nacelle | |
EP0828910B1 (en) | Deployable and collapsible inflatable dome | |
FR2528161A1 (en) | ROTARY OVEN WITH REPLACABLE SEALING DEVICES, SEALING DEVICES FOR THIS OVEN AND PROCEDURE FOR REPLACING THESE DEVICES | |
EP0473498B1 (en) | Apparatus for the evacuating of gases from a vertical launching missile module | |
EP0141738B1 (en) | Temporary cover for an opening inside a vessel, only accessible via an opening of smaller dimensions | |
FR2939067A1 (en) | BACKGROUND FOR CLOSING AT LEAST ONE OF THE ENDS OF A BODY OF TONNEAU AND TONNEAU EQUIPPED WITH SUCH A FOUNDATION | |
BE1018618A4 (en) | FIRE BARRIER. | |
EP0246992B1 (en) | Device for the introduction of a probe into a melting-reduction furnace | |
EP3408571A1 (en) | Flexible line with flooded annular space | |
FR3073542A1 (en) | SWIMMING POOL COMPRISING MEANS OF THERMAL INSULATION AND AIR SEALING IN ALL FACES OF THE BASIN | |
WO2024110718A1 (en) | Propulsion unit for an aircraft | |
FR3051490A1 (en) | BUILDING DELIMITATING AN INTERIOR SPACE BY AT LEAST ONE MOBILE ELEMENT FOR PASSING FROM A WINTER POSITION TO A SUMMER POSITION |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20100730 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
DAX | Request for extension of the european patent (deleted) | ||
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 602009024892 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: F27B0013020000 Ipc: F27D0001180000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: F27D 1/18 20060101AFI20140213BHEP Ipc: F27B 13/06 20060101ALI20140213BHEP Ipc: F27B 13/08 20060101ALI20140213BHEP Ipc: F27B 13/02 20060101ALI20140213BHEP |
|
INTG | Intention to grant announced |
Effective date: 20140303 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 674957 Country of ref document: AT Kind code of ref document: T Effective date: 20140715 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: FRENCH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602009024892 Country of ref document: DE Effective date: 20140807 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140926 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 674957 Country of ref document: AT Kind code of ref document: T Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: T2 Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141027 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20141025 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602009024892 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20150326 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20150205 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20150205 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150205 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20150205 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20160121 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20160121 Year of fee payment: 8 Ref country code: NO Payment date: 20160126 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20090205 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
REG | Reference to a national code |
Ref country code: NO Ref legal event code: MMEP |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MM Effective date: 20170301 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 Ref country code: NO Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170301 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20140625 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: PL Payment date: 20190114 Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602009024892 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200901 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20230119 Year of fee payment: 15 |