EP2935749B1 - Building with a protection device with a curtain - Google Patents

Building with a protection device with a curtain Download PDF

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Publication number
EP2935749B1
EP2935749B1 EP13815473.7A EP13815473A EP2935749B1 EP 2935749 B1 EP2935749 B1 EP 2935749B1 EP 13815473 A EP13815473 A EP 13815473A EP 2935749 B1 EP2935749 B1 EP 2935749B1
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EP
European Patent Office
Prior art keywords
curtain
building
explosion
confinement device
confinement
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
Application number
EP13815473.7A
Other languages
German (de)
French (fr)
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EP2935749A1 (en
Inventor
Thibault Derode
Jean-Marc TUGAYÉ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ArianeGroup SAS
Original Assignee
Airbus Defence and Space SAS
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Publication date
Application filed by Airbus Defence and Space SAS filed Critical Airbus Defence and Space SAS
Publication of EP2935749A1 publication Critical patent/EP2935749A1/en
Application granted granted Critical
Publication of EP2935749B1 publication Critical patent/EP2935749B1/en
Active legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/12—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/12—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas
    • E06B5/125—Closures for relieving excess pressure inside the building
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/70—Power-operated mechanisms for wings with automatic actuation
    • E05F15/72—Power-operated mechanisms for wings with automatic actuation responsive to emergency conditions, e.g. fire
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/18—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against harmful radiation
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/06—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type
    • E06B9/0692—Shutters, movable grilles, or other safety closing devices, e.g. against burglary collapsible or foldable, e.g. of the bellows or lazy-tongs type comprising flexible sheets as closing screen
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
    • E06B9/02—Shutters, movable grilles, or other safety closing devices, e.g. against burglary
    • E06B9/08—Roll-type closures
    • E06B9/11—Roller shutters
    • E06B9/17—Parts or details of roller shutters, e.g. suspension devices, shutter boxes, wicket doors, ventilation openings
    • E06B9/17007—Shutter boxes; Details or component parts thereof

Definitions

  • the invention relates to the field of the containment of processes involving high risks of emission of particularly toxic or radioactive substances.
  • the present invention aims to provide a solution for reconfinement with a very short response time, with high efficiency and tightness, with high reliability and resistant to the aggressions related to the initial explosion: shock wave, fragments, deformation of the building.
  • the invention proposes using a dry curtain, oversized with respect to the dimensions of the surface to be reconfined, designed to operate autonomously and which is protected against the initial explosion.
  • the present invention proposes a building provided with a confinement device according to claim 1.
  • the latter comprises an envelope in which the curtain is arranged, the device being such that the adapted envelope to release and deploy the curtain in response to the surge wave emitted by the explosion.
  • the device further comprises a lintel of the frame of the opening and the dry curtain is placed on an outer face of the lintel with respect to the interior of the building where the explosion is likely to occur.
  • the curtain material is advantageously constituted by a woven fabric of a technical fabric coated on both sides with one or more layers of a material adapted to ensure the tightness of the curtain and chemically compatible with the gases released during the treatment. 'explosion.
  • the curtain is advantageously provided with horizontal stiffeners.
  • the curtain preferably has a lower ballast bar for assisting the deployment of the curtain.
  • the ballast bar is advantageously provided with a seal under the curtain, said seal being adapted to seal the curtain at the bottom of the curtain.
  • the containment device further comprises a gas extraction system to put the building in depression after the explosion, to press the curtain against a frame of the opening.
  • the curtain is folded into a trunk comprising a lower tear-off panel which, under the action of the explosion pressure wave, is adapted to eject the trunk and release the curtain likely to to deploy under the sole action of gravity.
  • the device comprises retractable pneumatic actuators of release of the curtain, comprises pyrotechnic igniters actuators cylinders and includes an explosion detection chain adapted to generate an electrical signal of activation of the igniters.
  • the device comprises retractable electric actuators for releasing the curtain and an explosion detection chain adapted to generate an electrical signal for actuating the cylinders.
  • the device advantageously comprises a flexible envelope in which the curtain is coiled or coiled, the envelope being retained by the cylinders by means of eyelets retaining the flexible envelope before retraction of the cylinders.
  • the curtain unfolds preferably following the relaxation of the envelope following retraction of the cylinders.
  • the device advantageously comprises a secure power supply.
  • the invention provides a device comprising a dry curtain arranged to be able to confine or reconfiner a discharge zone, for example a door, in response to an explosion.
  • the device of the invention is designed to be of rapid deployment and unlikely to be faulted following an explosion.
  • the curtain 3 is placed in a chest 1 itself placed on the outer face of the lintel of the door to be reconfiner.
  • the device disposed outside the building to be reconfiner is thus protected by the lintel projections from an explosion.
  • the curtain is attached to an interface plate 12 itself fixed to the wall above the door.
  • the sheet is of small thickness which allows to obtain a relatively flexible interface, able to withstand the deformation of the lintel under the constraint of the surge waves of an explosion.
  • the curtain material is chosen according to the required chemical resistance performance but typically consists of a woven fabric coated on both sides with one or more layers of one or more sealing materials, the weft being further provided with horizontal stiffeners distributed over the entire height of the curtain.
  • the curtain comprises a lower ballast bar 4 which is provided with a gasket 5, for example a foam gasket, EPDM whose function is notably to compensate for differences in the height of the floor or the curtain or for parallelism between the curtain and the wall. floor and which ensures the tightness of the curtain at the bottom, the height of the rolled curtain is slightly higher, for example of the order of 1 cm, the distance between the top of the curtain wire and the ground.
  • a gasket 5 for example a foam gasket, EPDM whose function is notably to compensate for differences in the height of the floor or the curtain or for parallelism between the curtain and the wall. floor and which ensures the tightness of the curtain at the bottom, the height of the rolled curtain is slightly higher, for example of the order of 1 cm, the distance between the top of the curtain wire and the ground.
  • the building may also be provided with a not shown gas extraction system, this system to put the room in depression after the explosion and thus to ensure better peripheral sealing of the curtain by pressing against the frame of the opening.
  • the device comprises a tear-off panel 8 in visual range of the explosion center.
  • This panel attached to the trunk 1 will, under the action of the surge wave of an explosion, eject the chest and release the curtain that unfolds and falls under the sole action of gravity, because of its weight and weight of the ballast bar located at the bottom of the curtain.
  • the curtain is arranged in skeins in a steel sheet box.
  • An upper wall 110 of the box is placed on a support 6 linked to an interface plate by mounting links 2 and the box 1 holds in simple support on the support 6.
  • Two lifting interfaces 11 welded to the trunk allow easy assembly of the assembly using a forklift.
  • the support 6 of the trunk consists of two brackets arranged at the ends of the curtain and not hindering are deployment, on which rest steel bars that extend above the curtain and supporting the trunk 1.
  • the ejection of the chest is caused by the stress of the surge wave on the tear panel 8 which is positioned under the lintel.
  • the transmitted pulse then causes the rotation and ejection of the trunk and the release of the curtain 3.
  • the introduction of struts 7 makes it possible to transmit the tearing force to the entire trunk and not to deform only the tearout panel 8.
  • the curtain falls and unfolds under its weight and that of the ball bar 4 and is pressed against the frame around the opening.
  • This ballast bar 4 comprises a foam compensation gasket 5 which makes it possible to seal the lower part of the curtain.
  • Stiffeners 9 are regularly distributed in the curtain 3.
  • the stiffeners are according to the example constituted by a profile. To position this profile, a strip of fabric is sewn locally on the fabric of the curtain, for example leaving a longitudinal opening and the profile is slid through the opening between the two fabrics.
  • the length of the profile is such that the profile rests on the lintels of the door so as to retain the curtain but the profiles are shorter than the width of the curtain so that curtain strips beyond the profiles keep their flexibility and can make joint with the wall.
  • the curtain requires no energy or other consumable, it can thus ensure its function without interventions or maintenance.
  • the trunk can for example be made of sheet steel 2 mm and have a tear panel of about 0.3 m high.
  • the mass of the trunk is then about 150 kg.
  • a small explosion for example fixed at 40 g of TNT, located on the ground at 5 m from the door, will generate a dynamic overpressure peak of about 7,000 Pa on the tear-off panel, which leads to a peak of dynamic stress of 5%. 600 N, more than enough to ensure the trunk is torn off.
  • the duration of installation of the curtain can be estimated to less than one second since its deployment corresponds approximately to a free fall of 4 m of height.
  • trunk can be divided over the width of the door in several parts so that a deformation of the wall after the explosion does not block the system of descent of the curtain.
  • the Figure 1B represents the curtain deployed along the door frame with the compensation seal 5 which rests on the floor.
  • Figures 2A and 2B is a controlled device that uses a dry curtain released by retractable cylinders.
  • the cylinders are retractable pneumatic cylinders.
  • the curtain 27 is wound on itself and held in a flexible storage envelope 26, fixed on the one hand to the main structure 33 and on the other hand suspended to two retractable cylinders 23 via two metal buckles. sliding support on the rod 45 of each cylinder 23.
  • the main structure 33 is itself secured to the lintel of the room to be protected and the jacks 23 are integral with the main structure 33.
  • the igniters comprise an electrical resistance on which is a pyrotechnic mixture.
  • a current of sufficient intensity circulates in the resistance during a given time, the pyrotechnic mixture burns which generates a gas actuating the pneumatic cylinder.
  • the cover 21 is connected to the main structure 33 and comprises a vertical return 210 which limits the stroke of the metal loops or eyelets on the rods 45 of each cylinder 23. This makes it possible to prevent an inadvertent fall of the curtain by the exit of the metal loops. rods of the cylinders.
  • a pin 24 can be put in place during assembly / disassembly of the assembly or its maintenance to prevent inadvertent fall of the curtain 27.
  • Two side panels 30 protect the curtain from mechanical side aggression.
  • the electrical signal emitted by the detection chain causes the ignition of the two igniters 22 and consequently the retraction of the axes of the cylinders 23.
  • This movement of the axes releases the metal loops of the envelope of storage 26 which fades to the passage of the curtain 27 which is deployed under the action of gravity driven by its weight and the weight of the ballast bar 28.
  • the ballast bar 28 here also comprises a foam compensation joint 29 which makes it possible to seal the lower part of the curtain.
  • the curtain 27 may in particular be made of a technical fabric coated with a material suitable for sealing the curtain.
  • the material coating the curtain must be a material chemically compatible with the gases released during the explosion, ie a material that does not degrade in contact with these gases.
  • the material is for example a qualified material NBC (nuclear, bacteriological, chemical) or even NRBC (nuclear, radiation, bacteriological, chemical).
  • NBC nuclear, bacteriological, chemical
  • NRBC nuclear, radiation, bacteriological, chemical
  • An example may be the material supplied by the company Saint-Gobain under the brand Coretech Shelterguard 1450.
  • the curtain fabric may in particular be made of aramid fibers.
  • the duration of placement of the curtain can be estimated to less than one second.
  • the curtain can perform its function without requiring energy input and without consuming water or other fluid which allows to consider implementing other actions of securing the building without being pressed by time.
  • the cylinders 40 are electric cylinders directly controlled by an electrical signal from an explosion detection chain.
  • This chain comprises according to the example a sensor 41, according to the example disposed at the device of the invention or the opposite side of the main structure and a detector electronics unit 42 connected to a power supply by a cable 43.
  • the electronic box 42 may optionally be provided with an incorporated backup battery. It can be arranged near the curtain as shown but can also be realized in a large electronic cabinet with several functions and located in a room adjacent to the test room.
  • the senor 41 may be positioned elsewhere than near the curtain, its position in particular to be provided for a good detection of the explosion.
  • the back plate 25 promotes sealing of the top of the curtain against the door frame by coming to press the curtain and the storage envelope and compensating the thickness of the carrier structure 33.
  • the jack device can act to release a hatch instead of the casing 26.

Description

Arrière plan de l'inventionBackground of the invention Domaine de l'inventionField of the invention

L'invention concerne le domaine du confinement de procédés comportant des risques élevés d'émission de substances particulièrement toxiques ou radioactives.The invention relates to the field of the containment of processes involving high risks of emission of particularly toxic or radioactive substances.

Elle concerne plus généralement la sécurisation des infrastructures mettant en jeu des processus à haut risque lorsque sont présents des risques d'explosion (pyrotechnique, chimique, ...) et des risques d'émission de substances chimiques toxiques ou de substances radioactives.It more generally concerns the security of infrastructures involving high-risk processes when there are risks of explosion (pyrotechnic, chemical, etc.) and risks of emission of toxic chemical substances or radioactive substances.

Son objectif est d'assurer une protection collective en sécurité industrielle et civile.Its purpose is to provide collective protection in industrial and civil security.

Arrière plan technologiqueTechnological background

Lorsqu'un procédé met en présence des risques élevés d'explosion avec des risques élevés d'émission de substances particulièrement toxiques ou radioactives, il est souhaitable d'assurer un confinement du procédé dans une infrastructure telle qu'un bâtiment s'opposant à la dissémination de ces substances.When a process involves high risks of explosion with high risks of emission of particularly toxic or radioactive substances, it is desirable to ensure a confinement of the process in an infrastructure such as a building opposed to the dissemination of these substances.

En fonction de la quantité d'énergie mise en jeu en cas d'explosion, il peut être illusoire, ou tout du moins prohibitif, de réaliser un bâtiment totalement étanche à l'explosion.Depending on the amount of energy involved in an explosion, it may be illusory, or at least prohibitive, to make a building completely explosion-proof.

Dans le cas d'un bâtiment non étanche, il est possible de limiter la quantité d'effluents émis en définissant une surface de décharge qui va permettre de conserver l'intégrité du bâtiment, cette surface de décharge fonctionnant en soupape de décharge.In the case of an unsealed building, it is possible to limit the amount of effluent emitted by defining a discharge surface that will allow to maintain the integrity of the building, this discharge surface operating as a relief valve.

Dans le cadre de la présente invention on se place dans une configuration pour laquelle le bâtiment résiste à l'explosion et ne s'effondre pas.In the context of the present invention is placed in a configuration for which the building is resistant to the explosion and does not collapse.

Même si une partie des substances toxiques ou radioactives est émise au moment de l'explosion au travers de la surface de décharge du bâtiment, un reconfinement immédiat du bâtiment au niveau de la surface de décharge est très bénéfique et permet de fortement limiter, voire annuler, les émissions gazeuses ou particulaires après l'explosion et ainsi de limiter les risques d'effets délétères sur les personnels et les populations environnantes.Even if some of the toxic or radioactive substances are emitted at the time of the explosion through the discharge surface of the building, an immediate reconfinement of the building at the level of the discharge surface is very beneficial and can strongly limit or cancel , gaseous or particulate emissions after the explosion and thus limit the risk of deleterious effects on staff and surrounding populations.

Les solutions de confinement pour une protection collective dans le domaine des risques industriels sont à des stades de développement différents.Containment solutions for collective protection in the field of industrial risks are at different stages of development.

En cas d'incendie, le confinement par rideau d'eau déclenché sur détection incendie et cloisonnement coupe-feu sont aujourd'hui largement utilisés et de nombreux dispositifs réalisés selon sur ce principe sont disponibles.In case of fire, water curtain containment triggered on fire detection and fire partitioning are widely used today and many devices made according to this principle are available.

La réalisation de zones de confinement d'émissions gazeuses ou particulaires est bien connue pour les installations ne comportant pas de risque d'explosion.The realization of gaseous or particulate emission confinement zones is well known for non-explosive installations.

Pour des zones totalement déconfinées les technologies d'abattement par rideau d'eau sont largement employées.For totally unconfined areas, water curtain abatement technologies are widely used.

Les inconvénients du confinement par rideau d'eau sont son efficacité décroissante dans le temps et son autonomie limitée ou nécessitant une alimentation continue en eau.The disadvantages of water curtain containment are its decreasing efficiency over time and its limited autonomy or requiring a continuous supply of water.

Il existe aussi une technologie de reconfinement par porte mobile automatique ou commandée mais le problème principal est de garantir l'état fonctionnel de la porte après les effets de l'explosion et notamment l'onde de choc, les chocs de fragments ou la déformation du bâtiment.There is also a technology for automatic or controlled mobile door reconfinement, but the main problem is to guarantee the functional state of the door after the effects of the explosion and in particular the shock wave, the shocks of fragments or the deformation of the door. building.

En outre ces portes ont un temps de mise en oeuvre non négligeable.In addition these doors have a time of implementation not negligible.

Le document US 6 588 705 B1 concerne un écran de protection déployable de protection contre des projectiles et le document WO 01/32266 A2 décrit un dispositif barrière qui se déploie par gonflage.The document US 6,588,705 B1 a deployable protection shield for projectile protection and the document WO 01/32266 A2 discloses a barrier device that deploys by inflation.

Brève description de l'inventionBrief description of the invention

La présente invention vise à fournir une solution de reconfinement à très court temps de réponse, à haute efficacité et étanchéité, à haute fiabilité et résistante aux agressions liées à l'explosion initiale : onde de choc, fragments, déformation du bâtiment.The present invention aims to provide a solution for reconfinement with a very short response time, with high efficiency and tightness, with high reliability and resistant to the aggressions related to the initial explosion: shock wave, fragments, deformation of the building.

Pour ce faire l'invention propose d'utiliser un rideau sec, surdimensionné par rapport aux dimensions de la surface à reconfiner, conçu pour fonctionner de manière autonome et qui est protégé vis à vis de l'explosion initiale.To do this, the invention proposes using a dry curtain, oversized with respect to the dimensions of the surface to be reconfined, designed to operate autonomously and which is protected against the initial explosion.

Plus particulièrement la présente invention propose un bâtiment muni d'un dispositif de confinement selon la revendication 1. Selon un mode de réalisation préférentiel du dispositif, ce dernier comporte une enveloppe dans lequel le rideau est disposé, le dispositif étant tel que l'enveloppe adaptée à libérer et déployer le rideau en réponse à l'onde de surpression émise par l'explosion.More particularly, the present invention proposes a building provided with a confinement device according to claim 1. According to a preferred embodiment of the device, the latter comprises an envelope in which the curtain is arranged, the device being such that the adapted envelope to release and deploy the curtain in response to the surge wave emitted by the explosion.

Le dispositif comporte en outre un linteau de l'encadrement de l'ouverture et le rideau sec est placé sur une face externe du linteau par rapport à l'intérieur du bâtiment où l'explosion est susceptible de se produire.The device further comprises a lintel of the frame of the opening and the dry curtain is placed on an outer face of the lintel with respect to the interior of the building where the explosion is likely to occur.

Le matériau du rideau est avantageusement constitué d'une trame tissée d'un tissu technique enduite sur les deux faces d'une ou plusieurs couches d'un matériau adapté à assurer l'étanchéité du rideau et chimiquement compatible avec les gaz dégagés lors de l'explosion.The curtain material is advantageously constituted by a woven fabric of a technical fabric coated on both sides with one or more layers of a material adapted to ensure the tightness of the curtain and chemically compatible with the gases released during the treatment. 'explosion.

Le rideau est avantageusement muni de raidisseurs horizontaux.The curtain is advantageously provided with horizontal stiffeners.

Le rideau comporte préférablement une barre de lest inférieure d'aide au déploiement du rideau.The curtain preferably has a lower ballast bar for assisting the deployment of the curtain.

La barre de lest est avantageusement munie d'un joint sous le rideau, ledit joint étant adapté à assurer l'étanchéité du rideau en partie basse du rideau.The ballast bar is advantageously provided with a seal under the curtain, said seal being adapted to seal the curtain at the bottom of the curtain.

Avantageusement, le dispositif de confinement comporte en outre un système d'extraction des gaz permettant de mettre le bâtiment en dépression après l'explosion en sorte de plaquer le rideau contre un encadrement de l'ouverture.Advantageously, the containment device further comprises a gas extraction system to put the building in depression after the explosion, to press the curtain against a frame of the opening.

Selon un premier mode de réalisation, le rideau est replié dans un coffre comportant un panneau inférieur d'arrachement qui, sous l'action de l'onde de surpression d'une explosion, est adapté à éjecter le coffre et libérer le rideau susceptible de se déployer sous la seule action de la gravité.According to a first embodiment, the curtain is folded into a trunk comprising a lower tear-off panel which, under the action of the explosion pressure wave, is adapted to eject the trunk and release the curtain likely to to deploy under the sole action of gravity.

Selon un deuxième mode de réalisation, le dispositif comporte des vérins pneumatiques rétractables de libération du rideau, comporte des allumeurs pyrotechniques d'activation des vérins et comporte une chaîne de détection d'explosion adaptée pour générer un signal électrique d'activation des allumeurs.According to a second embodiment, the device comprises retractable pneumatic actuators of release of the curtain, comprises pyrotechnic igniters actuators cylinders and includes an explosion detection chain adapted to generate an electrical signal of activation of the igniters.

Selon un troisième mode de réalisation, le dispositif comporte des vérins électriques rétractables de libération du rideau et une chaîne de détection d'explosion adaptée à générer un signal électrique d'activation des vérins.According to a third embodiment, the device comprises retractable electric actuators for releasing the curtain and an explosion detection chain adapted to generate an electrical signal for actuating the cylinders.

Le dispositif comporte avantageusement une enveloppe souple dans laquelle le rideau est lové ou enroulé, l'enveloppe étant retenue par les vérins au moyen d'oeillets retenant l'enveloppe souple avant rétractation des vérins.The device advantageously comprises a flexible envelope in which the curtain is coiled or coiled, the envelope being retained by the cylinders by means of eyelets retaining the flexible envelope before retraction of the cylinders.

Dans ce cas, le rideau se déploie préférablement suite au relâchement de l'enveloppe suite à rétractation des vérins.In this case, the curtain unfolds preferably following the relaxation of the envelope following retraction of the cylinders.

Le dispositif comporte avantageusement une alimentation électrique sécurisée.The device advantageously comprises a secure power supply.

Brève description des dessinsBrief description of the drawings

D'autres caractéristiques et avantages de l'invention seront apparents à la lecture de la description qui suit d'exemples non limitatifs accompagnée des dessins qui représentent:

  • aux figures 1A et 1B: des vues en coupe de côté d'un dispositif selon un premier mode de réalisation de l'invention;
  • aux figures 2A et 2B: des vues en coupe de côté d'un dispositif selon un deuxième mode de réalisation de l'invention;
  • en figure 3 un détail d'un dispositif selon un troisième mode de réalisation de l'invention.
Other features and advantages of the invention will be apparent from the following description of non-limiting examples accompanied by the drawings which represent:
  • to the Figures 1A and 1B : side sectional views of a device according to a first embodiment of the invention;
  • to the Figures 2A and 2B : side sectional views of a device according to a second embodiment of the invention;
  • in figure 3 a detail of a device according to a third embodiment of the invention.

Description détaillée de modes de réalisation de l'inventionDETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

L'invention prévoit un dispositif comportant un rideau sec disposé de façon à pouvoir confiner ou reconfiner une zone de décharge, par exemple une porte, en réponse à une explosion. Le dispositif de l'invention est réalisé en sorte d'être de déploiement rapide et peu susceptible d'être mis en défaut suite à une explosion.The invention provides a device comprising a dry curtain arranged to be able to confine or reconfiner a discharge zone, for example a door, in response to an explosion. The device of the invention is designed to be of rapid deployment and unlikely to be faulted following an explosion.

L'exemple de réalisation décrit aux figures 1A et 1B respectivement avant déploiement et après déploiement du rideau sec correspond à un premier mode de réalisation de l'invention pour lequel le rideau est logé dans un coffre amovible.The exemplary embodiment described in Figures 1A and 1B respectively before deployment and after deployment of the dry curtain is a first embodiment of the invention for which the curtain is housed in a removable chest.

Selon la figure 1A, le rideau 3 est placé dans un coffre 1 lui-même placé sur la face externe du linteau de la porte à reconfiner.According to Figure 1A , the curtain 3 is placed in a chest 1 itself placed on the outer face of the lintel of the door to be reconfiner.

Le dispositif disposé à l'extérieur du bâtiment à reconfiner est ainsi protégé par le linteau des projections issues d'une explosion.The device disposed outside the building to be reconfiner is thus protected by the lintel projections from an explosion.

Le rideau est fixé à une tôle d'interface 12 elle-même fixée au mur au dessus de la porte. La tôle est de faible épaisseur ce qui permet d'obtenir une interface relativement souple, capable de supporter les déformations du linteau sous la contrainte des ondes de surpression d'une explosion.The curtain is attached to an interface plate 12 itself fixed to the wall above the door. The sheet is of small thickness which allows to obtain a relatively flexible interface, able to withstand the deformation of the lintel under the constraint of the surge waves of an explosion.

Le matériau du rideau est choisi en fonction des performances de résistance chimique nécessaires mais est typiquement constitué d'une trame tissée enduite sur les deux faces d'une ou plusieurs couches d'un ou plusieurs matériaux d'étanchéité, la trame étant en outre munie de raidisseurs horizontaux répartis sur toute la hauteur du rideau.The curtain material is chosen according to the required chemical resistance performance but typically consists of a woven fabric coated on both sides with one or more layers of one or more sealing materials, the weft being further provided with horizontal stiffeners distributed over the entire height of the curtain.

Le rideau comporte une barre de lest inférieure 4 qui est munie d'un joint 5, par exemple un joint en mousse, EPDM dont la fonction est notamment de compenser des différences de hauteur du sol ou du rideau ou de parallélisme entre le rideau et le sol et qui permet d'assurer l'étanchéité du rideau en partie basse, la hauteur du rideau déroulé étant légèrement supérieure, par exemple de l'ordre de 1 cm, à la distance entre le fil haut du rideau et le sol.The curtain comprises a lower ballast bar 4 which is provided with a gasket 5, for example a foam gasket, EPDM whose function is notably to compensate for differences in the height of the floor or the curtain or for parallelism between the curtain and the wall. floor and which ensures the tightness of the curtain at the bottom, the height of the rolled curtain is slightly higher, for example of the order of 1 cm, the distance between the top of the curtain wire and the ground.

Le bâtiment peut en outre être muni d'un système d'extraction des gaz non représenté, ce système permettant de mettre en dépression le local après l'explosion et donc d'assurer une meilleure étanchéité périphérique du rideau en le plaquant contre l'encadrement de l'ouverture.The building may also be provided with a not shown gas extraction system, this system to put the room in depression after the explosion and thus to ensure better peripheral sealing of the curtain by pressing against the frame of the opening.

Le dispositif comprend un panneau d'arrachement 8 en portée visuelle du centre d'explosion.The device comprises a tear-off panel 8 in visual range of the explosion center.

Ce panneau fixé au coffre 1 va, sous l'action de l'onde de surpression d'une explosion, éjecter le coffre et libérer le rideau qui se déploie et chute alors sous la seule action de la gravité, du fait de son poids et du poids de la barre de lest située en partie basse du rideau.This panel attached to the trunk 1 will, under the action of the surge wave of an explosion, eject the chest and release the curtain that unfolds and falls under the sole action of gravity, because of its weight and weight of the ballast bar located at the bottom of the curtain.

Selon la figure 1A, le rideau est disposé en écheveaux dans un coffre en tôles d'acier. Une paroi supérieure 110 du coffre est posée sur un support 6 lié à une plaque d'interface par des liaisons de montage 2 et le coffre 1 tient en appui simple sur le support 6.According to Figure 1A , the curtain is arranged in skeins in a steel sheet box. An upper wall 110 of the box is placed on a support 6 linked to an interface plate by mounting links 2 and the box 1 holds in simple support on the support 6.

Deux interfaces de levage 11 soudées au coffre permettent un montage aisé de l'ensemble à l'aide d'un chariot à fourches.Two lifting interfaces 11 welded to the trunk allow easy assembly of the assembly using a forklift.

Le support 6 du coffre est constitué de deux équerres disposées aux extrémités du rideau et ne gênant pas sont déploiement, sur lesquelles reposent des barres en acier qui s'étendent au dessus du rideau et supportant le coffre 1.The support 6 of the trunk consists of two brackets arranged at the ends of the curtain and not hindering are deployment, on which rest steel bars that extend above the curtain and supporting the trunk 1.

Ainsi les supports 6 et les barres qui s'étendent entre eux sont reçus à l'intérieur du coffre. Cette conception selon laquelle la face supérieure 110 du coffre repose sur des barres permet lorsque le coffre est en train de s'éjecter, que la contrainte de surpression s'applique à l'intérieur du coffre et non sur le support pour poursuivre correctement l'éjection du coffre.Thus the supports 6 and the bars which extend between them are received inside the trunk. This design according to which the upper face 110 of the trunk rests on bars allows when the trunk is ejecting, that the overpressure stress is applied to the inside of the trunk and not on the support to continue correctly. ejection of the chest.

Le rideau pour sa part repose sur la face inférieure 111 du coffre.The curtain for its part rests on the underside 111 of the trunk.

L'éjection du coffre est provoquée par la contrainte de l'onde de surpression sur le panneau d'arrachement 8 qui est positionné sous le linteau. L'impulsion transmise provoque alors la rotation puis l'éjection du coffre et la libération du rideau 3. La mise en place de jambes de force 7 permet de transmettre l'effort d'arrachement à l'ensemble du coffre et non de déformer uniquement le panneau d'arrachement 8.The ejection of the chest is caused by the stress of the surge wave on the tear panel 8 which is positioned under the lintel. The transmitted pulse then causes the rotation and ejection of the trunk and the release of the curtain 3. The introduction of struts 7 makes it possible to transmit the tearing force to the entire trunk and not to deform only the tearout panel 8.

Dès que l'effacement du coffre est suffisant, le rideau chute et se déploie sous son poids et celui de la barre de lest 4 et vient se plaquer contre le dormant autour de l'ouverture.As soon as the erasure of the chest is sufficient, the curtain falls and unfolds under its weight and that of the ball bar 4 and is pressed against the frame around the opening.

Des moyens de freinage en fin de course réalisés ici par des adhésifs mécaniques 10 tels que connus sous la marque velcro liant le dernier écheveau, permettent de ralentir la barre de lest 4 en fin de chute et d'éviter sa détérioration.Braking means at the end of the stroke made here by mechanical adhesives 10 such as known under the brand velcro linking the last skein, allow to slow down the weight bar 4 at the end of the fall and to avoid its deterioration.

Cette barre de lest 4 comprend un joint de compensation en mousse 5 qui permet d'assurer l'étanchéité en partie basse du rideau.This ballast bar 4 comprises a foam compensation gasket 5 which makes it possible to seal the lower part of the curtain.

Des raidisseurs 9 sont régulièrement répartis dans le rideau 3.Stiffeners 9 are regularly distributed in the curtain 3.

Les raidisseurs sont selon l'exemple constitués par un profilé. Pour positionner ce profilé, une bande de tissu est cousue localement sur le tissu du rideau par exemple en laissant une ouverture longitudinale et le profilé est glissé par l'ouverture entre les deux tissus.The stiffeners are according to the example constituted by a profile. To position this profile, a strip of fabric is sewn locally on the fabric of the curtain, for example leaving a longitudinal opening and the profile is slid through the opening between the two fabrics.

La longueur du profilé est telle que le profilé s'appuie sur les linteaux de la porte de façon à retenir le rideau mais les profilés sont plus courts que la largeur du rideau de telle façon que des bandes de rideau au delà des profilés gardent leur souplesse et puissent faire joint avec le mur.The length of the profile is such that the profile rests on the lintels of the door so as to retain the curtain but the profiles are shorter than the width of the curtain so that curtain strips beyond the profiles keep their flexibility and can make joint with the wall.

Ceci permet de constater que le rideau est libre sur ses côtés latéraux et dépasse sur les bords de l'encadrement.This shows that the curtain is free on its lateral sides and protrudes on the edges of the frame.

Une fois en place, le rideau ne nécessite aucun apport d'énergie ou autre consommable, il peut ainsi assurer sa fonction sans interventions ou maintenance.Once in place, the curtain requires no energy or other consumable, it can thus ensure its function without interventions or maintenance.

Pour une porte de 4 m de largeur, en considérant un débordement du rideau de 50 cm de chaque côté du dormant et en considérant des écheveaux d'environ 0,5 m, il faut un coffre sous forme d'un parallélépipède d'environ 0,6 x 0,4 x 5 m.For a door 4 m wide, considering a 50 cm curtain overhang on each side of the frame and considering skeins of approximately 0.5 m, a box in the form of a parallelepiped of approximately 0 is required. , 6 x 0.4 x 5 m.

Le coffre peut par exemple être réalisé en tôle d'acier de 2 mm et comporter un panneau d'arrachement d'environ 0,3 m de haut.The trunk can for example be made of sheet steel 2 mm and have a tear panel of about 0.3 m high.

La masse du coffre est alors d'environ 150 kg.The mass of the trunk is then about 150 kg.

Une faible explosion fixée par exemple à 40 g de TNT, localisée au sol à 5 m de la porte générera un pic de surpression dynamique d'environ 7 000 Pa sur le panneau d'arrachement ce qui conduit à un pic de contrainte dynamique de 5 600 N, largement suffisant pour assurer l'arrachement du coffre.A small explosion, for example fixed at 40 g of TNT, located on the ground at 5 m from the door, will generate a dynamic overpressure peak of about 7,000 Pa on the tear-off panel, which leads to a peak of dynamic stress of 5%. 600 N, more than enough to ensure the trunk is torn off.

La durée de mise en place du rideau peut être estimée à moins d'une seconde puisque son déploiement correspond approximativement à une chute libre de 4 m de haut.The duration of installation of the curtain can be estimated to less than one second since its deployment corresponds approximately to a free fall of 4 m of height.

Il s'agit d'une chute libre et aucun guide n'est réalisé sur les côtés de l'ouverture, de tels guides ne pouvant que ralentir la chute du rideau voir le bloquer en cas de déformation suite à l'explosion.It is a free fall and no guide is made on the sides of the opening, such guides can only slow down the fall of the curtain or block it in case of deformation following the explosion.

Il est à noter que le coffre peut être divisé sur la largeur de la porte en plusieurs parties pour qu'une déformation du mur suite à l'explosion ne bloque pas le système de descente du rideau.It should be noted that the trunk can be divided over the width of the door in several parts so that a deformation of the wall after the explosion does not block the system of descent of the curtain.

La figure 1B représente le rideau déployé le long de l'encadrement de la porte avec le joint de compensation 5 qui repose sur le sol.The Figure 1B represents the curtain deployed along the door frame with the compensation seal 5 which rests on the floor.

L'exemple des figures 2A et 2B correspond à un dispositif piloté qui utilise un rideau sec libéré par des vérins rétractables.The example of Figures 2A and 2B is a controlled device that uses a dry curtain released by retractable cylinders.

Selon ce mode de réalisation, les vérins sont des vérins pneumatiques rétractables.According to this embodiment, the cylinders are retractable pneumatic cylinders.

Ces vérins rétractables sont activés par des allumeurs pyrotechniques eux-mêmes mis à feu par un signal électrique provenant d'une chaîne de détection d'explosion. Cette chaîne de détection d'explosion pourra être du type de celle décrite dans le brevet US 6 031 462 A .These retractable cylinders are activated by pyrotechnic igniters themselves fired by an electrical signal from an explosion detection chain. This explosion detection chain may be of the type described in the patent US 6,031,462 A .

Le dispositif de ce mode de réalisation est un dispositif autonome dans la mesure où il utilise une alimentation électrique sécurisée, par exemple une alimentation secteur secourue par des batteries.The device of this embodiment is an autonomous device in that it uses a secure power supply, for example a mains power supply backed up by batteries.

Selon la figure 2A, le rideau 27 est enroulé sur lui même et retenu par dans une enveloppe de stockage souple 26, fixée d'une part sur la structure principale 33 et d'autre part suspendue à deux vérins rétractables 23 par l'intermédiaire de deux boucle métalliques en appui glissant sur la tige 45 de chaque vérin 23.According to Figure 2A , the curtain 27 is wound on itself and held in a flexible storage envelope 26, fixed on the one hand to the main structure 33 and on the other hand suspended to two retractable cylinders 23 via two metal buckles. sliding support on the rod 45 of each cylinder 23.

la structure principale 33 est elle-même solidaire du linteau du local à protéger et les vérins 23 sont solidaires de la structure principale 33.the main structure 33 is itself secured to the lintel of the room to be protected and the jacks 23 are integral with the main structure 33.

Chaque vérin 23, typiquement vérin de type double action monté en action de rétraction, est activé par un inflammateur pyrotechnique 22. Les deux allumeurs 22 sont activés par une chaîne de détection de surpression à capteur et contrôleur de type connu et non décrite ici.Each cylinder 23, typically double-acting type cylinder mounted retraction action, is activated by a pyrotechnic igniter 22. The two igniters 22 are activated by a sensor pressure sensing and control chain of known type and not described here.

Les allumeurs comportent une résistance électrique sur laquelle se trouve un mélange pyrotechnique. Lorsqu'un courant d'une intensité suffisante circule dans la résistance durant un temps donné, le mélange pyrotechnique brûle ce qui génère un gaz actionnant le vérin pneumatique.The igniters comprise an electrical resistance on which is a pyrotechnic mixture. When a current of sufficient intensity circulates in the resistance during a given time, the pyrotechnic mixture burns which generates a gas actuating the pneumatic cylinder.

Les vérins 23, les allumeurs 22 et le rideau 27 sont protégés des intempéries, de la poussière et des agressions mécaniques par un capot 21.The cylinders 23, the igniters 22 and the curtain 27 are protected from bad weather, dust and mechanical aggression by a cover 21.

Le capot 21 est lié à la structure principale 33 et comporte un retour vertical 210 qui vient limiter la course des boucles métalliques ou oeillets sur les tiges 45 de chaque vérin 23. Ceci permet d'éviter une chute intempestive du rideau par sortie des boucles métalliques des tiges des vérins.The cover 21 is connected to the main structure 33 and comprises a vertical return 210 which limits the stroke of the metal loops or eyelets on the rods 45 of each cylinder 23. This makes it possible to prevent an inadvertent fall of the curtain by the exit of the metal loops. rods of the cylinders.

De plus, une goupille 24 peut être mise en place lors des opérations de montage/démontage de l'ensemble ou sa maintenance afin d'empêcher une chute intempestive du rideau 27. Deux panneaux latéraux 30 protègent le rideau des agressions mécaniques latérales.In addition, a pin 24 can be put in place during assembly / disassembly of the assembly or its maintenance to prevent inadvertent fall of the curtain 27. Two side panels 30 protect the curtain from mechanical side aggression.

Suite à la détection d'une explosion, le signal électrique émis par la chaîne de détection provoque l'inflammation des deux allumeurs 22 et par suite la rétractation des axes des vérins 23. Ce mouvement des axes libère les boucles métalliques de l'enveloppe de stockage 26 qui s'efface au passage du rideau 27 qui se déploie sous l'action de la gravité entraîné par son poids et le poids de la barre de lest 28.Following the detection of an explosion, the electrical signal emitted by the detection chain causes the ignition of the two igniters 22 and consequently the retraction of the axes of the cylinders 23. This movement of the axes releases the metal loops of the envelope of storage 26 which fades to the passage of the curtain 27 which is deployed under the action of gravity driven by its weight and the weight of the ballast bar 28.

Ici aussi aucun guidage latéral n'est prévu le rideau tombant simplement le long de l'ouverture.Here also no lateral guidance is provided the curtain simply falling along the opening.

La barre de lest 28 comprend ici aussi un joint de compensation en mousse 29 qui permet d'assurer l'étanchéité en partie basse du rideau.The ballast bar 28 here also comprises a foam compensation joint 29 which makes it possible to seal the lower part of the curtain.

Des raidisseurs 31 sont régulièrement répartis dans le rideau 27 pour assurer la rigidité du rideau sous contraintes de pression. L'étanchéité du rideau contre l'encadrement de l'ouverture à protéger est également favorisée par une contre-plaque 25 qui vient plaquer le rideau 27 et l'enveloppe de stockage 26 en compensant l'épaisseur de la structure principale 33.Stiffeners 31 are evenly distributed in the curtain 27 to ensure the rigidity of the curtain under pressure constraints. The tightness of the curtain against the frame of the opening to be protected is also favored by a counterplate 25 which presses the curtain 27 and the storage envelope 26 by compensating for the thickness of the main structure 33.

Dans le présent mode de réalisation et dans le précédent, le rideau 27 peut notamment être constitué d'un tissu technique enduit d'un matériau adapté à assurer l'étanchéité du rideau.In the present embodiment and in the previous embodiment, the curtain 27 may in particular be made of a technical fabric coated with a material suitable for sealing the curtain.

Le matériau enduisant le rideau doit être un matériau chimiquement compatible avec les gaz dégagés lors de l'explosion c'est à dire un matériau ne se dégradant pas au contact de ces gaz.The material coating the curtain must be a material chemically compatible with the gases released during the explosion, ie a material that does not degrade in contact with these gases.

Le matériau est par exemple un matériau qualifié NBC (nucléaire, bactériologique, chimique) voire même NRBC (nucléaire, rayonnement, bactériologique, chimique).The material is for example a qualified material NBC (nuclear, bacteriological, chemical) or even NRBC (nuclear, radiation, bacteriological, chemical).

Un exemple peut être le matériau fourni par la société Saint-Gobain sous la marque Coretech Shelterguard 1450.An example may be the material supplied by the company Saint-Gobain under the brand Coretech Shelterguard 1450.

Le tissu du rideau peut notamment être réalisé en fibres aramides.The curtain fabric may in particular be made of aramid fibers.

Comme pour le premier mode de réalisation, la durée de mise en place du rideau peut être estimée à moins d'une seconde.As for the first embodiment, the duration of placement of the curtain can be estimated to less than one second.

Une fois en place comme représenté aux figures 1B et 2B, le rideau peut assurer sa fonction sans nécessiter d'apport d'énergie et sans consommer d'eau ou autre fluide ce qui permet d'envisager de mettre en oeuvre d'autres actions de sécurisation du bâtiment sans être pressé par le temps.Once in place as represented at Figures 1B and 2B , the curtain can perform its function without requiring energy input and without consuming water or other fluid which allows to consider implementing other actions of securing the building without being pressed by time.

En variante selon la figure 3, les vérins 40 sont des vérins électriques directement commandés par un signal électrique provenant d'une chaîne de détection d'explosion.Alternatively according to the figure 3 , the cylinders 40 are electric cylinders directly controlled by an electrical signal from an explosion detection chain.

Cette chaine comporte selon l'exemple un capteur 41, selon l'exemple disposé au niveau du dispositif de l'invention ou du côté opposé de la structure principale et un boîtier électronique détecteur 42 relié à une alimentation par un câble 43.This chain comprises according to the example a sensor 41, according to the example disposed at the device of the invention or the opposite side of the main structure and a detector electronics unit 42 connected to a power supply by a cable 43.

Le boîtier électronique 42 peut être pourvu éventuellement d'une batterie de secours incorporée. Il peut être disposé à proximité du rideau comme représenté mais peut aussi être réalisé dans une armoire électronique de grande dimensions regroupant plusieurs fonctions et située dans un local annexe au local d'essais.The electronic box 42 may optionally be provided with an incorporated backup battery. It can be arranged near the curtain as shown but can also be realized in a large electronic cabinet with several functions and located in a room adjacent to the test room.

De même le capteur 41 peut être positionné ailleurs qu'à proximité du rideau, sa position devant notamment être prévue pour une bonne détection de l'explosion.Similarly, the sensor 41 may be positioned elsewhere than near the curtain, its position in particular to be provided for a good detection of the explosion.

La figure 3 permet notamment de mieux visualiser l'enveloppe de stockage souple 26 similaire à celle du dispositif de la figure 2A et qui est par exemple réalisée à partir d'un morceau de tissu rectangulaire fixé sur un premier bord par des ancrages 44 dans le mur et retenue au travers de la structure porteuse 33 et comportant les oeillets 46 passés sur les tiges 45 des vérins 40 sur un second bord opposé au premier bord.The figure 3 allows in particular to better visualize the flexible storage envelope 26 similar to that of the device of the Figure 2A and which is for example made from a piece of rectangular fabric fixed on a first edge by anchors 44 in the wall and retained through the carrier structure 33 and having the eyelets 46 passed on the rods 45 of the cylinders 40 on a second edge opposite the first edge.

Comme dans le mode de réalisation précédent, la contre plaque 25 favorise l'étanchéité du haut du rideau contre l'encadrement de la porte en venant plaquer le rideau et l'enveloppe de stockage et en compensant l'épaisseur de la structure porteuse 33.As in the previous embodiment, the back plate 25 promotes sealing of the top of the curtain against the door frame by coming to press the curtain and the storage envelope and compensating the thickness of the carrier structure 33.

L'invention définie par les revendications n'est pas limitée aux exemples représentés et notamment s'applique à d'autres ouvertures que des portes. Par ailleurs le dispositif à vérins peut agir pour libérer une trappe au lieu de l'enveloppe 26.The invention defined by the claims is not limited to the examples shown and in particular applies to other openings than doors. Moreover, the jack device can act to release a hatch instead of the casing 26.

Claims (14)

  1. Building with a confinement device comprising a discharge surface to be confined or re-confined formed by an opening in the building such as a door, characterized in that the device is a confinement device in response to an explosion inside the building and comprises a lintel framing the opening, a dry curtain (3, 27) chosen so as to have dimensions larger than the dimensions of said opening, said curtain (3, 27) being placed on an external face of the lintel with respect to the interior of the building where the explosion is liable to occur, and a system for deploying the curtain which is sensitive to an overpressure wave emitted by said explosion, said deployment system permitting deployment by freefall of said dry curtain (3, 27) in response to the overpressure wave emitted by said explosion.
  2. Building with a confinement device according to Claim 1, in which the curtain (3, 27) is arranged in an envelope (1, 26) that is designed to release and deploy the curtain under the action of the deployment system in response to the overpressure wave emitted by the explosion.
  3. Building with a confinement device according to Claim 1 or 2, in which the material of the curtain consists of a woven substrate of technical textile coated on both faces with one or more coats of a sealing material that is chemically compatible with gases given off in an explosion.
  4. Building with a confinement device according to any one of the preceding claims, further comprising a gas extraction system by means of which it is possible to create a reduced pressure inside the building after the explosion so as to press the curtain against a frame of the opening.
  5. Building with a confinement device according to any one of the preceding claims, in which the confinement device comprises a case (1) in which the dry curtain (3, 27) is folded up, said case comprising a lower tear-off panel (8) which forms the deployment system and which, when stressed by the overpressure wave, is brought to eject the case and release the curtain that can deploy merely under the effect of gravity.
  6. Building with a confinement device according to any one of Claims 1 to 4, in which the deployment system comprises retractable pneumatic actuators (23) for releasing the curtain, pyrotechnic igniters (22) for activating the actuators and an explosion detection chain that generates an electrical ignitor activation signal when said explosion is detected.
  7. Building with a confinement device according to any one of Claims 1 to 4, in which the deployment system comprises retractable electric actuators (23) for releasing the curtain, and an explosion detection chain that generates an electrical actuator activation signal when said explosion is detected.
  8. Building with a confinement device according to Claim 6 or 7, in which the confinement device comprises a flexible envelope (26) in which the curtain (27) is coiled or wound, and in which the envelope (26) is held by the actuators (23) by means of eyelets that retain the flexible envelope before retraction of the actuators.
  9. Building with a confinement device according to any one of Claims 6 to 8, in which the confinement device comprises a secure electrical supply.
  10. Building with a confinement device according to any one of Claims 5 to 9, in which the curtain comprises a lower weighting bar (4, 28) to aid the deployment of the curtain.
  11. Building with a confinement device according to Claim 10, in which the weighting bar (4, 28) is provided with a seal (5, 29) below the curtain to ensure sealing of the curtain at the bottom part of the curtain.
  12. Building with a confinement device according to any one of Claims 5 to 11, in which the curtain is provided with horizontal stiffeners (9, 31).
  13. Building with a confinement device according to Claim 12, in which the length of the stiffeners is defined such that they press against the sides of the opening, and such that they are shorter than the width of the curtain.
  14. Building with a confinement device according to any one of Claims 5 to 13, in which the lateral sides of the curtain are free and extend past the lateral sides of the frame.
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FR1262332A FR2999637B1 (en) 2012-12-19 2012-12-19 DRY CURTAIN CONTAINMENT DEVICE
PCT/EP2013/077197 WO2014096073A1 (en) 2012-12-19 2013-12-18 Bomb blast curtain device

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Also Published As

Publication number Publication date
US20150361714A1 (en) 2015-12-17
EP2935749A1 (en) 2015-10-28
JP2016514220A (en) 2016-05-19
RU2015129609A (en) 2017-01-24
FR2999637B1 (en) 2017-12-22
FR2999637A1 (en) 2014-06-20
WO2014096073A1 (en) 2014-06-26

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