EP2958641B1 - Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator - Google Patents

Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator Download PDF

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Publication number
EP2958641B1
EP2958641B1 EP14710002.8A EP14710002A EP2958641B1 EP 2958641 B1 EP2958641 B1 EP 2958641B1 EP 14710002 A EP14710002 A EP 14710002A EP 2958641 B1 EP2958641 B1 EP 2958641B1
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EP
European Patent Office
Prior art keywords
actuator
installation according
piston
water
membrane
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.)
Not-in-force
Application number
EP14710002.8A
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German (de)
French (fr)
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EP2958641A2 (en
Inventor
Maurice Kadoche
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Vactec SAS
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Vactec SAS
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Publication date
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Priority to PL14710002T priority Critical patent/PL2958641T3/en
Publication of EP2958641A2 publication Critical patent/EP2958641A2/en
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Publication of EP2958641B1 publication Critical patent/EP2958641B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/62—Pipe-line systems dry, i.e. empty of extinguishing material when not in use
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems

Definitions

  • the field of the invention is that of the design and manufacture of fire fighting equipment and installations. More specifically, the invention relates to a trigger device designed for firefighting installations called "vacuum”.
  • the role of an automatic fire extinguishing system using sprinklers is to detect, as soon as possible, a fire and then automatically trigger the extinguishing system, at least locally, while emitting an alarm.
  • the purpose of the installation is to contain as much as possible the fire, before the arrival of the firefighters who then take over the installation to extinguish the fire.
  • the fuse is calibrated to burst when a certain temperature is exceeded, thus releasing the nozzle from its sealing cap.
  • underwater systems are not suitable for sites with frost risks. Indeed, in case of frost, the water can not flow.
  • the gel can cause damage to the piping of the installation (deformation or burst pipes).
  • the installation is then put out of water.
  • the site to be protected is heated to avoid any risk of frost.
  • energy consumption, and therefore the heating bill can be considerable, even prohibitive.
  • Another way to fight against freezing is to add an antifreeze to the water of the installation, such as glycol, which is a toxic and carcinogenic product.
  • the water can in some cases take up to 60 seconds to reach the sprinkler whose fuse is burst, which is certainly in line with the standard in force but may be too long vis-à-vis vis of some fire starts.
  • vacuum systems have been designed.
  • a vacuum is created in the pipes extending between a general valve and the set of sprinklers.
  • all the pipes separating the valve from the sprinklers are under vacuum.
  • vacuum is an active energy that serves as a functional source for sprinkler monitoring. Indeed, if a fuse of one of the sprinklers bursts, the atmospheric pressure wins the entire installation, which causes the change of state of an actuator which, in turn, opens the general valve of arrival of water. It follows that the water invades quickly and without obstacles the entire installation to the sprinklers, the water flowing through the sprinkler (s) where the fuse has burst. The still active vacuum in the networks quickly attracts the extinguishing water to the sprinklers whose fuse has burst.
  • the tripping time of the actuator is very short, since when a fuse bursts, the "vacuum" installation immediately generates a phenomenon of suction of the air outside the installation. It should be noted that this suction can be beneficial, the suction effect on the fire focus to reduce the intensity of it.
  • the water inlet time of the sprinkler with the fuse blown is less than 60 seconds.
  • the trigger that is to say the watering of the sprinkler network, is obtained using a device comprising an actuator.
  • Such an actuator comprises a body in which open a water inlet duct and a water outlet duct capable of being placed in communication with each other.
  • a spring R is mounted in the body C of the actuator, this spring R being mounted in tension and coupled to the ogive O so that the spring tends to pull the ogive out of its closed position .
  • the sprinkler system when the sprinkler system is under vacuum, it sucks the warhead into a closed position of the conduit C1, with a force greater than that calibrated in a predetermined manner of the spring R.
  • the sprinkler system when the sprinkler system is set the atmospheric pressure (by bursting a fuse from at least one of the sprinklers of the installation), the suction force of the warhead is removed and the spring pulls the warhead (to the left on the figure 1 ), which links the conduits C2 and C3, leading to the triggering of the installation.
  • the warhead can leave, even stealthily, its position. shutter, which may be sufficient for the spring R to exert traction superior to the suction power initially present in the conduit C1.
  • the actuator then takes its position authorizing the triggering of the impoundment of the installation.
  • the purpose of the invention is to propose a fire-fighting installation, of the type implementing a vacuum network of sprinklers, which is not or only slightly subject to unexpected tripping.
  • the invention also aims to provide such a facility to achieve its commissioning quickly and convenient way.
  • a fire-fighting installation including a network of vacuum sprinklers, the installation integrating a device for triggering the setting water of the sprinkler network, the triggering device comprising at least one actuator comprising a body into which a water inlet duct and a water outlet pipe that can be placed in communication, an organ of the actuator being able to authorize / prohibit the placing in communication of the water intake pipe with the water supply pipe so that the prohibition of the communication of the two conduits maintains the network of vacuum sprinklers while the communication of the two pipes triggers the impoundment of the sprinkler network.
  • the setting of the triggering device is done automatically by the vacuum of the sprinkler network.
  • said membrane is advantageously mounted in an enclosure, so as to form a sealed deformable partition between two passages opposite to each other formed in the enclosure, namely a primary conduit communicating with the sprinkler system and a secondary passage through which an axis coupled to the yoke can slide, said axis being secured to the membrane and a ballast.
  • the enclosure is then advantageously delimited by a bell and a closure disk, the membrane being clamped between the bell and the disk.
  • said axis is also coupled to a spring for pushing the membrane towards the second position.
  • said spring is mounted in compression bearing on a wheel adjustable in position on said axis.
  • the locking means comprises a tilting locking spacer mounted at one end of a pivoting lever connected by the other of its ends to the yoke.
  • the lever is advantageously pivotally mounted on the actuator.
  • the actuator comprises a piston movable in a cavity of the body, and has an outer portion extending out of said cavity and being provided with a ring on which the locking means is intended to act.
  • a spring is advantageously mounted in the cavity of the body of the actuator so as to push the piston out of the cavity when the stirrup is in said second position.
  • the spring has a first end cooperating with the piston and a second end, opposite to the first, bearing on a plate of the body, said plate having a central finger on which the spring is threaded.
  • the actuator comprises a piston movable in a cavity of the body and the water inlet conduit communicates with a pipe which controls the general valve for flooding the sprinkler system, the valve general being closed when the pilot line is in pressurized water and open when the pilot line is depressurized, the piston being movable between a closed position and the inlet conduit maintaining the pressure in the pilot line and a release position authorizing the communication of the arrival conduit with the departure conduit.
  • the starting conduit communicates with a water draining circuit.
  • the actuator comprises a piston movable in a cavity of the body, the body having a first end through which the piston can move, and a second end opposite to the first, the starting conduit being formed in the second end or between the starting duct and the second end, the starting duct communicating with a circuit at atmospheric pressure.
  • Such a starting pipe positioned in this way and being at atmospheric pressure, tends to promote the movement of the piston, in particular at the start of its change of state to go to the trigger position.
  • the actuator comprises a piston movable in a body cavity, a third conduit being formed in the body and being capable of being placed in communication with the arrival conduit in said second position. of the stirrup, the third conduit communicating with a hydraulic alarm circuit.
  • the actuator according to the invention can trigger simultaneously, or almost, the impoundment of the sprinkler system and the activation of the hydraulic alarm.
  • the commissioning of such an installation provides for the evacuation of the sprinkler network S, the vacuum thus also being present in the line 21 leading to the trigger device 2.
  • the triggering device 2 keeps the control chamber of the general valve 3 under water pressure, which keeps it in a closed position.
  • the sprinkler network S starts at atmospheric pressure, which also propagates at the line 21, which switches the state of the trigger device 2, which then allows , as will be described in more detail below, the pressure drop in the control chamber of the general valve 3, which will cause the opening of the latter and the impoundment of the sprinkler network S.
  • an actuator intended to be integrated in an installation according to the invention comprises a body 40, in the form of a cylinder, having a central cavity 400, and into which a conduit 41 for supplying water and a conduit 42 of water flow, the two conduits being capable of being put in communication with each other.
  • the actuator also incorporates a piston 43, constituting an actuator member adapted to allow / prohibit the placing in communication of the conduit 41 with the conduit 42.
  • the water supply pipe communicates with a pilot line 22 connected to the control chamber of the general valve 3 ( figure 2 ), the latter being closed when the pilot line 22 is in pressurized water and open when the pilot line is depressurized.
  • the conduit 42 of water flow communicates with a water drain circuit 23, at atmospheric pressure.
  • the piston 43 of the actuator is movable between a closed position of the duct 41, which maintains the pressure in the pilot line 22 (resulting in a closed position of the general valve 3), and a position of release allowing the communication of the conduit 41 of water inlet with the conduit 42 of water flow, which causes the pressure in the control chamber of the general valve and causes the opening thereof, and thus the impoundment of the sprinkler system.
  • the body 40 of the actuator further has a third conduit 44, capable of being placed in communication with the conduit 41 of water inlet when the piston 43 is in the release position, such as that illustrated by the figure 5 .
  • This third conduit 44 communicates with a hydraulic alarm circuit 24 ( figure 2 ).
  • the piston 43 comprises a closing portion 430, which is extended by an axis 431, an outer portion 432 extends out of the body 40 of the actuator.
  • This portion 432 has at its end a ball 433 gripping.
  • the portion 432 has, outside the body of the actuator, a ring 434, bearing against the body of the actuator in the waiting position thereof.
  • the closing portion 430 of the piston has a central recess 435 forming a housing for a spring 436, mounted in the body of the actuator so as to push the piston 43 out of the cavity during the change of state of the 'actuator.
  • the spring 436 is thus mounted in compression in the central recess of the piston sealing portion, in the actuator's waiting position, as illustrated by the figure 4 .
  • the spring 436 has a first end 4360 housed in the central recess of the closing portion of the piston, and intended to cooperate therewith, while the second end 4361 of the spring, opposite the first, is in abutment. on a plate 45 constituting the bottom of the body of the actuator.
  • This plate has a central finger 451 on which is threaded the end 4361 of the spring.
  • the piston is advantageously guided in translation on the one hand at its axis 431 and, secondly, thanks to the spring 436.
  • the conduit 42 of water flow is formed in the plate 45 and is connected, as indicated above, to a drain circuit 23, put at atmospheric pressure in the waiting position of the installation.
  • the master actuator 5 of a trigger device according to the invention is described below with reference to the Figures 6 and 7 .
  • the membrane 51 is mounted in the master actuator so that it is clamped between the bell 501 and the disk 502, this over the entire periphery of the membrane. It is understood that, according to this arrangement, the entire surface of the membrane, or almost, is exposed to the pressure in the chamber 50.
  • the membrane is therefore the sensitive member of the master actuator, likely to cause change state of the latter under the effect of the pressure change in the enclosure. And only the bursting of the fuse of a sprinkler can cause a pressure change in the chamber, unlike the actuator of the prior art whose chamber is at atmospheric pressure, which, in case of slight movement of the warhead under the effect of shaking or vibration, allows the change of state of the actuator.
  • the master actuator is intended to act on the actuator 4 by a movement of the stirrup 54, from a first position to a second position, the first position of the stirrup corresponding to the first position of the membrane 51 illustrated by the figure 6 , and the second position of the stirrup corresponding to the second position of the diaphragm illustrated by the figure 7 .
  • the bell 501 has in its upper part an opening 5011 placing the interior of the enclosure 50 in communication with a primary duct 500 connected to the line 21 illustrated by FIG. figure 2 .
  • the ballast 53 has on its upper face reliefs intended to prevent the ballast constitutes a shutter of the primary conduit 500, in the waiting position of the master actuator corresponding to the first position of the membrane and the stirrup. In this way, the risk of the ballast being plated at the inlet of the primary duct is eliminated by a suction effect, which would lead to failure of the trip.
  • the disc 502 has meanwhile a secondary passage 5021 through which the shaft 52 coupled to the yoke 54 can slide.
  • a spring 55 is in contact at one of its ends with the axis 52, by means of a wheel 520 and, at the other of its ends, with the end of the secondary passage 5021.
  • the spring 55 In the position illustrated by the figure 6 , the spring 55 is compressed and tends to exert on the axis 52, via the wheel 520, a downward force conjugating with that of the ballast 53.
  • the spring In the position illustrated by the figure 7 the spring is at rest.
  • the force of the spring 55 is calibrated according to the weight of the ballast.
  • the compression of the spring 55 can be preset by changing the position of the wheel 520, the position thereof can be changed along the axis 52.
  • the stirrup 54 is coupled to a lever 6.
  • the lever 6 has at one of its ends an oblong slot 61 in which can slide a lug 540 provided at the lower end of the stirrup 54.
  • the lever 6 has at its opposite end to the oblong slot 61 a locking means 60, intended to hold the actuator in the position illustrated by FIG. figure 4 or, conversely, to release the latter so that it can move towards and to the position illustrated by the figure 5 .
  • the locking means 60 in the locking position, acts on the ring 434 carried by the axis 431 of the piston.
  • the lever is pivoted between the position illustrated by the figure 4 and the position illustrated by the figure 5 .
  • the lever 6 is pivotally mounted about an axis 62 carried by the body 40 of the shutter.
  • the position of the axis 62 is significantly closer to the end of the yoke lever side than that of the side of the locking means, so as to increase as much as possible the amplitude of the movement of the lever at the end lever on the side of the locking means with respect to the yoke side.
  • the locking means 60 takes the form of a spacer 63 pivotally mounted at the end of the lever 6 about an axis 64.
  • the locking means 60 can pivot about its axis 64, thus allowing the circular movement of the corresponding end of the lever, and to disengage from the locking position.
  • the locking spacer may take the form of a head having an inverted U-shaped recess in which the outer portion 432 of the piston is housed in the locking position.
  • the operation of the triggering device is as follows.
  • the shutter constituted by the ballast 53 falls towards the disk 502, driving the membrane 51, and by moving, via the axis 52, the stirrup 54 towards the low.
  • the lug 540 of the bracket 54 present in the oblong slot 61 then pushes the corresponding end of the lever downwards, causing the lever 6 to pivot about its axis 62 and, consequently, the rise of the spacer 63 locking up, simultaneously with the tilting thereof about its axis 64.
  • the lever acts as a transmission member between the yoke and the locking means in position of the piston of the actuator .
  • the piston 43 of the actuator is then released and the spring 432 pushes the piston towards the position illustrated by the figure 5 , in the triggering position of the impedance of the sprinkler system.
  • the stroke of the piston is provided in such a way that the duct 41 communicates on the one hand with the conduit 42 for the flow of water and, on the other hand, with the third conduit 44.
  • the pressure drop in the pilot line causes the change of state of the general valve 3, described hereinafter with reference to the figure 8 .
  • This opening corresponds to the triggering of the installation in case of fire, and the opening of the valve allows the watering of the sprinkler network.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)

Description

Le domaine de l'invention est celui de la conception et de la fabrication des équipements et installations de lutte contre les incendies. Plus précisément, l'invention concerne un dispositif de déclenchement conçu pour les installations de lutte contre les incendies dites « sous vide ».The field of the invention is that of the design and manufacture of fire fighting equipment and installations. More specifically, the invention relates to a trigger device designed for firefighting installations called "vacuum".

Le rôle d'une installation d'extinction automatique d'incendie mettant en oeuvre des sprinklers est de détecter, le plus tôt possible, un foyer d'incendie puis de déclencher automatiquement le système d'extinction, au moins localement, ceci tout en émettant une alarme. L'installation a pour objectif de contenir le plus possible l'incendie, avant l'arrivée des sapeurs-pompiers qui prennent alors le relais de l'installation pour éteindre l'incendie.The role of an automatic fire extinguishing system using sprinklers is to detect, as soon as possible, a fire and then automatically trigger the extinguishing system, at least locally, while emitting an alarm. The purpose of the installation is to contain as much as possible the fire, before the arrival of the firefighters who then take over the installation to extinguish the fire.

Dans le domaine de l'invention, les installations de lutte contre les incendies sont classées en trois catégories, à savoir :

  • les systèmes « sous eau » ;
  • les systèmes « sous air » ;
  • les systèmes « sous vide ».
In the field of the invention, the fire-fighting installations are classified in three categories, namely:
  • underwater systems;
  • "under the air"systems;
  • "vacuum" systems.

Dans ces trois systèmes, les sprinklers sont montés en réseau de façon à être régulièrement répartis sur le site à protéger. Classiquement, les sprinklers comprennent :

  • un raccord de fixation, permettant de relier le sprinkler à une tuyauterie, ce raccord de fixation présentant un ajutage destiné au passage de l'eau à libérer pour éteindre l'incendie ;
  • un fusible ;
  • un opercule d'obturation de l'ajutage, maintenu en position d'obturation par le fusible.
In these three systems, the sprinklers are networked so as to be regularly distributed on the site to be protected. Classically, sprinklers include:
  • a fixing connection, for connecting the sprinkler to a pipe, this fixing fitting having a nozzle for the passage of water to release to extinguish the fire;
  • a fuse;
  • a sealing cap of the nozzle, held in the closed position by the fuse.

Le fusible est calibré pour éclater lorsqu'une certaine température est dépassée, libérant ainsi l'ajutage de son opercule d'obturation.The fuse is calibrated to burst when a certain temperature is exceeded, thus releasing the nozzle from its sealing cap.

Dans les systèmes « sous eau », l'ensemble de la tuyauterie de l'installation est remplie d'eau, ceci jusqu'aux sprinklers. L'eau est donc en attente derrière le moyen d'obturation et lorsque le fusible éclate, l'eau s'écoule au travers de l'ajutage du raccord du sprinkler dont le fusible a éclaté.In "underwater" systems, all the piping in the installation is filled with water, right down to the sprinklers. The water is therefore waiting behind the sealing means and when the fuse bursts, the water flows through the nozzle of the sprinkler fitting whose fuse has burst.

Le temps de libération de l'eau est donc immédiat, ce qui est particulièrement avantageux. En revanche, les systèmes « sous eau », ne sont pas adaptés pour les sites présentant des risques de gel. En effet, en cas de gel, l'eau ne peut pas s'écouler. De plus, le gel peut causer des détériorations à la tuyauterie de l'installation (déformation voire éclatement des tuyaux). Dans certains cas, l'installation est alors mise hors d'eau. Dans d'autres cas, le site à protéger est chauffé pour éviter tout risque de gel. Pour les sites à protéger présentant une surface relativement importante, la consommation d'énergie, et par conséquent la facture de chauffage, peut s'avérer considérable, voire prohibitive. Une autre façon de lutter contre le gel est d'ajouter à l'eau de l'installation un antigel, tel que du glycol qui est un produit toxique et cancérigène.The time of release of water is immediate, which is particularly advantageous. In contrast, "underwater" systems are not suitable for sites with frost risks. Indeed, in case of frost, the water can not flow. In addition, the gel can cause damage to the piping of the installation (deformation or burst pipes). In some cases, the installation is then put out of water. In other cases, the site to be protected is heated to avoid any risk of frost. For sites to protect with a relatively large area, energy consumption, and therefore the heating bill, can be considerable, even prohibitive. Another way to fight against freezing is to add an antifreeze to the water of the installation, such as glycol, which is a toxic and carcinogenic product.

Dans les systèmes « sous air », l'ensemble de l'installation est hors d'eau. L'ensemble de la tuyauterie de l'installation est maintenue sous pression. Lorsque les fusibles éclatent, la pression d'air est libérée par le ou les sprinklers en question et l'eau, également sous pression, tend à « pousser » l'air hors de l'installation jusqu'à arriver à l'orifice ou aux orifices libérés de façon à s'échapper par ceux-ci.In "under air" systems, the whole installation is out of water. All the piping of the installation is kept under pressure. When the fuses burst, the air pressure is released by the sprinkler (s) in question and the water, also under pressure, tends to "push" the air out of the installation until it reaches the orifice or to the orifices released so as to escape through them.

Avec un tel système, l'eau peut dans certains cas mettre jusqu'à 60 secondes pour parvenir au sprinkler dont le fusible est éclaté, ce qui est certes conforme à la norme en vigueur mais qui peut s'avérer trop long vis-à-vis de certains départs d'incendie.With such a system, the water can in some cases take up to 60 seconds to reach the sprinkler whose fuse is burst, which is certainly in line with the standard in force but may be too long vis-à-vis vis of some fire starts.

En outre, les systèmes « sous air » ne s'affranchissent pas totalement des problèmes liés au gel. En effet, de la condensation peut se créer dans les tuyauteries d'une installation « sous air », ce qui peut nuire à certains composants de l'installation et mettre en échec la protection.In addition, the "under air" systems do not completely overcome the problems related to freezing. Indeed, condensation can occur in the pipes of an installation "under air", which can harm some components of the installation and defeat the protection.

De façon générale, les systèmes « sous eau » et « sous air » présentent les inconvénients suivants :

  • ils sont sujets à l'embouage et, par conséquent, au colmatage ;
  • ils sont sujets à la corrosion, ce qui peut évidemment conduire à une installation hors d'usage en tout ou partie et mettre en échec la protection ;
  • ils peuvent être l'objet de fuites d'eau non visibles ;
  • ils permettent le développement des micro-organismes dans les canalisations de l'installation.
In general, underwater and underwater systems have the following disadvantages:
  • they are subject to sludging and, consequently, clogging;
  • they are subject to corrosion, which can obviously lead to an installation out of order in whole or in part and defeat the protection;
  • they can be the object of non-visible water leaks;
  • they allow the development of micro-organisms in the pipes of the installation.

Il en résulte qu'ils nécessitent, entre autres, des traitements antigel et anticorrosion (impliquant le recours à des produits nocifs).As a result, they require, inter alia, anti-freeze and anti-corrosion treatments (involving the use of harmful products).

Par ailleurs, ils nécessitent des opérations de rinçage après utilisation.Moreover, they require rinsing operations after use.

En outre, ils impliquent des temps de mise en service relativement longs, en fonction de l'étendue de l'installation, qui peuvent aller de une à quatre heures pour les systèmes « sous eau » et de deux heures et plus pour les systèmes « sous air ».In addition, they involve relatively long commissioning times, depending on the extent of the installation, which can range from one to four hours for "underwater" systems and two hours or more for "wet" systems. under the air.

Pour pallier l'ensemble de ces inconvénients, les systèmes « sous vide » ont été conçus. Dans les systèmes « sous vide », on crée un vide dans les canalisations s'étendant entre une vanne générale et l'ensemble des sprinklers. En d'autres termes, toutes les canalisations séparant la vanne des sprinklers sont sous vide.To overcome all these drawbacks, the "vacuum" systems have been designed. In "vacuum" systems, a vacuum is created in the pipes extending between a general valve and the set of sprinklers. In other words, all the pipes separating the valve from the sprinklers are under vacuum.

Dans ces systèmes, le vide constitue une énergie active qui sert de source fonctionnelle à la surveillance des sprinklers. En effet, si un fusible d'un des sprinklers éclate, la pression atmosphérique gagne l'ensemble de l'installation, ce qui provoque le changement d'état d'un actionneur qui, à son tour, ouvre la vanne générale d'arrivé d'eau. Il s'en suit que l'eau envahit rapidement et sans obstacles l'ensemble de l'installation jusqu'aux sprinklers, l'eau s'écoulant par le ou les sprinklers dont le fusible a éclaté. Le vide encore actif dans les réseaux attire rapidement l'eau d'extinction vers les sprinklers dont le fusible a éclaté.In these systems, vacuum is an active energy that serves as a functional source for sprinkler monitoring. Indeed, if a fuse of one of the sprinklers bursts, the atmospheric pressure wins the entire installation, which causes the change of state of an actuator which, in turn, opens the general valve of arrival of water. It follows that the water invades quickly and without obstacles the entire installation to the sprinklers, the water flowing through the sprinkler (s) where the fuse has burst. The still active vacuum in the networks quickly attracts the extinguishing water to the sprinklers whose fuse has burst.

Le temps de déclenchement de l'actionneur est très court, dans la mesure où, lorsqu'un fusible éclate, l'installation « sous vide » engendre immédiatement un phénomène d'aspiration de l'air extérieur à l'installation. Il est à noter que cette aspiration peut être bénéfique, l'effet d'aspiration sur le foyer d'incendie tendant à réduire l'intensité de celui-ci.The tripping time of the actuator is very short, since when a fuse bursts, the "vacuum" installation immediately generates a phenomenon of suction of the air outside the installation. It should be noted that this suction can be beneficial, the suction effect on the fire focus to reduce the intensity of it.

Le temps d'arrivée d'eau au sprinkler dont le fusible a éclaté est inférieur à 60 secondes.The water inlet time of the sprinkler with the fuse blown is less than 60 seconds.

On comprend donc que, du fait de l'absence d'eau ou de condensation dans une installation d'un système « sous vide », on obtient les résultats suivants :

  • pas de corrosion, donc pas d'embouage ni de colmatage ;
  • la garantie d'obtenir la densité d'eau d'extinction requise ;
  • pas de développement de micro-organismes ;
  • pas de fuites d'eau possibles (l'eau étant par défaut absente dans les canalisations de l'installation conduisant aux sprinklers) ;
  • aucune nécessité de traitement antigel ou anticorrosif ;
  • pas de rinçage nécessaire avant mise en service de l'installation.
It is therefore understood that, due to the absence of water or condensation in an installation of a "vacuum" system, the following results are obtained:
  • no corrosion, so no fogging or clogging;
  • the guarantee of obtaining the density of extinguishing water required;
  • no development of micro-organisms;
  • no water leakage possible (water is by default absent in the pipelines of the installation leading to the sprinklers);
  • no need for antifreeze or anticorrosive treatment;
  • no rinsing necessary before putting the plant into operation.

En outre, comme cela va être expliqué plus en détails par la suite, le temps de mise en service d'une installation avec un système « sous vide » s'opère extrêmement rapidement, sous une minute environ.In addition, as will be explained in more detail later, the commissioning time of an installation with a "vacuum" system operates extremely quickly, under a minute or so.

Dans les systèmes sous vide, le déclenchement, c'est à dire la mise en eau du réseau de sprinklers, est obtenu à l'aide d'un dispositif comprenant un actuateur.In vacuum systems, the trigger, that is to say the watering of the sprinkler network, is obtained using a device comprising an actuator.

Un tel actuateur comprend un corps dans lequel débouchent un conduit d'arrivée d'eau et un conduit de départ d'eau susceptibles d'être mis en communication l'un avec l'autre.Such an actuator comprises a body in which open a water inlet duct and a water outlet duct capable of being placed in communication with each other.

Un organe de l'actuateur est mobile entre deux positions, à savoir :

  • une position d'interdiction de la mise en communication des deux conduits, ce qui correspond à un maintien sous vide du réseau de sprinklers ;
  • une position d'autorisation de la mise en communication du conduit d'arrivée d'eau avec le conduit de départ d'eau, ce qui déclenche la mise en eau du réseau de sprinklers.
An actuator member is movable between two positions, namely:
  • a position prohibiting the communication between the two conduits, which corresponds to a vacuum hold of the sprinkler network;
  • a position of authorization of the communication of the water inlet conduit with the water outlet conduit, which triggers the impoundment of the sprinkler network.

Un tel actuateur est notamment décrit par le document de brevet publié sous le numéro FR-2 724 323 .Such an actuator is described in particular by the patent document published under the number FR-2,724,323 .

En référence à la figure 1, l'actuateur de l'art antérieur décrit par le document de brevet FR-2 724 323 comprend un corps de cylindre C présentant :

  • un conduit axial C1, communiquant avec le réseau sous vide de sprinklers ;
  • un conduit d'arrivée d'eau C2 ;
  • un conduit de départ d'eau C3, communiquant avec le circuit de déclenchement de la mise en eau du réseau de sprinklers.
With reference to the figure 1 , the actuator of the prior art described by the patent document FR-2,724,323 comprises a cylinder body C having:
  • an axial duct C1 communicating with the vacuum network of sprinklers;
  • a water inlet duct C2;
  • a water flow conduit C3, communicating with the circuit for tripping the impounding of the sprinkler network.

En position d'attente de l'installation (donc en l'absence d'incendie), une ogive O obture les trois conduits, C1, C2 et C3.In the waiting position of the installation (therefore in the absence of fire), a ogive O closes the three ducts, C1, C2 and C3.

En outre, un ressort R est monté dans le corps C de l'actuateur, ce ressort R étant monté en traction et couplé à l'ogive O de telle sorte que le ressort tend à tirer l'ogive hors de sa position d'obturation.In addition, a spring R is mounted in the body C of the actuator, this spring R being mounted in tension and coupled to the ogive O so that the spring tends to pull the ogive out of its closed position .

Ainsi, lorsque le réseau de sprinklers est sous vide, il aspire l'ogive dans une position d'obturation du conduit C1, avec une force supérieure à celle calibrée de façon prédéterminée du ressort R. En revanche, lorsque le réseau de sprinklers est mis la pression atmosphérique (par éclatement d'un fusible d'au moins un des sprinklers de l'installation), la force d'aspiration de l'ogive est supprimée et le ressort tire l'ogive (vers la gauche sur la figure 1), ce qui met en relation les conduits C2 et C3, conduisant au déclenchement de l'installation.Thus, when the sprinkler system is under vacuum, it sucks the warhead into a closed position of the conduit C1, with a force greater than that calibrated in a predetermined manner of the spring R. However, when the sprinkler system is set the atmospheric pressure (by bursting a fuse from at least one of the sprinklers of the installation), the suction force of the warhead is removed and the spring pulls the warhead (to the left on the figure 1 ), which links the conduits C2 and C3, leading to the triggering of the installation.

Or, il a été constaté que, en cas de secousses ou de vibrations (par exemple dues à des coups de bélier, à des déflagrations légères consécutives au passage de véhicules...), l'ogive peut quitter, même furtivement, sa position d'obturation, ce qui peut suffire au ressort R pour exercer une traction supérieure au pouvoir d'aspiration initialement présent dans le conduit C1. L'actuateur prend alors sa position autorisant le déclenchement de la mise en eau de l'installation.However, it has been found that, in the event of shaking or vibrations (for example due to water hammer, slight explosions following the passage of vehicles ...), the warhead can leave, even stealthily, its position. shutter, which may be sufficient for the spring R to exert traction superior to the suction power initially present in the conduit C1. The actuator then takes its position authorizing the triggering of the impoundment of the installation.

Bien entendu, dans une telle situation, aucun sprinkler n'a son fusible éclaté, et il ne s'opère donc aucun écoulement d'eau. Toutefois, il est nécessaire de faire venir un technicien pour procéder à la remise en service de l'installation, c'est à dire à la vidange du réseau de sprinklers et à sa mise sous vide, puis à la remise en service de l'installation.Of course, in such a situation, no sprinkler has its fuse burst, and there is therefore no flow of water. However, it is necessary to bring a technician to proceed with the return to service of the installation, that is to say the emptying of the sprinkler system and its evacuation, then the return to service of the installation.

En outre, lors de la mise en service de l'installation, un tel actuateur de l'art antérieur s'avère peu pratique. En effet, il est nécessaire de repousser l'ogive vers le conduit C1 et de maintenir cette pression jusqu'à ce que la dépression dans le conduit C1 soit suffisante pour engendrer une aspiration sur l'ogive supérieure à la force du ressort R, et donc le maintien en position d'obturation de celle-ci. D'autres actuateurs sont connus des documents US 2 699 217 A et US 2 865 457 A . L'invention a notamment pour objectif de pallier ces inconvénients de l'art antérieur.In addition, during the commissioning of the installation, such actuator of the prior art proves impractical. Indeed, it is necessary to push the warhead to the conduit C1 and maintain this pressure until the vacuum in the conduit C1 is sufficient to cause suction on the upper warhead to the force of the spring R, and therefore holding in the closed position thereof. Other actuators are known documents US 2,699,217 A and US 2,865,457 A . The invention particularly aims to overcome these disadvantages of the prior art.

Plus précisément, l'invention a pour objectif de proposer une installation de lutte contre les incendies, du type mettant en oeuvre un réseau sous vide de sprinklers, qui ne soit pas ou peu sujet aux déclenchements inopinés.More precisely, the purpose of the invention is to propose a fire-fighting installation, of the type implementing a vacuum network of sprinklers, which is not or only slightly subject to unexpected tripping.

L'invention a également pour objectif de fournir une telle installation permettant de réaliser sa mise en service de façon rapide et pratique.The invention also aims to provide such a facility to achieve its commissioning quickly and convenient way.

Ces objectifs, ainsi que d'autres qui apparaîtront par la suite, sont atteints à l'aide d'une installation de lutte contre les incendies, incluant un réseau de sprinklers sous vide, l'installation intégrant un dispositif de déclenchement de la mise sous eau du réseau de sprinklers, le dispositif de déclenchement comprenant au moins un actuateur comprenant un corps dans lequel débouche un conduit d'arrivée d'eau et un conduit de départ d'eau susceptibles d'être mis en communication, un organe de l'actuateur étant apte à autoriser/interdire la mise en communication du conduit d'arrivée d'eau avec le conduit de départ d'eau de telle sorte que l'interdiction de la mise en communication des deux conduits maintienne le réseau de sprinklers sous vide tandis que la mise en communication des deux conduits déclenche la mise en eau du réseau de sprinklers.These objectives, as well as others that will appear later, are achieved with the aid of a fire-fighting installation, including a network of vacuum sprinklers, the installation integrating a device for triggering the setting water of the sprinkler network, the triggering device comprising at least one actuator comprising a body into which a water inlet duct and a water outlet pipe that can be placed in communication, an organ of the actuator being able to authorize / prohibit the placing in communication of the water intake pipe with the water supply pipe so that the prohibition of the communication of the two conduits maintains the network of vacuum sprinklers while the communication of the two pipes triggers the impoundment of the sprinkler network.

Selon l'invention, le dispositif de déclenchement est caractérisé en ce qu'il comprend :

  • un actionneur maître sensible à la pression présente dans le réseau de sprinklers et susceptible de déplacer un étrier d'une première à une deuxième position ;
  • un moyen de verrouillage en position de l'organe de l'actuateur interdisant la mise en communication des deux conduits ;
  • un organe de transmission entre ledit étrier et ledit moyen de verrouillage apte à permettre à l'organe de l'actuateur de passer dans la position autorisant la mise en communication des deux conduits lorsque l'étrier est dans ladite deuxième position,
ledit actionneur maître comprenant une membrane mobile entre une première position correspondant à un état sous vide du réseau de sprinklers et une deuxième position correspondant à une mise à la pression atmosphérique du réseau de sprinklers, lesdites première et deuxième positions correspondant auxdites première et deuxième positions de l'étrier.According to the invention, the triggering device is characterized in that it comprises:
  • a pressure-sensitive master actuator present in the sprinkler array and capable of moving a stirrup from a first to a second position;
  • a locking means in position of the actuator member prohibiting the placing in communication of the two conduits;
  • a transmission member between said stirrup and said locking means adapted to allow the actuator member to pass into the position authorizing the communication of the two ducts when the stirrup is in said second position,
said master actuator comprising a movable membrane between a first position corresponding to a vacuum state of the sprinkler array and a second position corresponding to an atmospheric pressure setting of the sprinkler array, said first and second positions corresponding to said first and second positions of stirrup.

Ainsi, grâce à l'invention, on dissocie les moyens structurels du dispositif de déclenchement en deux parties, à savoir :

  • l'une constituée par l'actionneur maître, sensible à la pression présente dans le réseau de sprinklers, et susceptible d'initier le déclenchement (la mise sous eau) de l'installation ;
  • l'autre, recevant l'information de l'actionneur maître, et pilotant la mise en communication des deux conduits de l'actuateur susceptible de commander la mise en eau du réseau de sprinklers.
Thus, thanks to the invention, the structural means of the tripping device are divided into two parts, namely:
  • one constituted by the master actuator, sensitive to the pressure present in the sprinkler system, and likely to initiate the trigger (the watering) of the installation;
  • the other, receiving information from the master actuator, and controlling the communication of the two actuator conduits that may control the impregnation of the sprinkler system.

Ces deux fonctions étaient réunies dans l'ogive de l'actuateur de l'art antérieur.These two functions were united in the warhead of the actuator of the prior art.

Selon l'invention, en dissociant les deux fonctions, on autorise éventuellement de légères variations d'état de l'actionneur maître, sans que cela entraine directement et automatiquement le changement d'état de l'actuateur.According to the invention, by dissociating the two functions, it is possible to allow slight variations in the state of the master actuator, without this directly and automatically leading to the change of state of the actuator.

On évite de cette façon les déclenchements inopinés de l'installation.In this way, unintentional tripping of the installation is avoided.

Par ailleurs, comme cela va apparaître plus clairement par la suite, lors de la mise en service de l'installation, la mise en état du dispositif de déclenchement se fait automatiquement par la mise sous vide du réseau de sprinklers.Moreover, as will become clearer later, during the commissioning of the installation, the setting of the triggering device is done automatically by the vacuum of the sprinkler network.

De plus, avec la membrane de l'actionneur maître, et comme cela va apparaître plus clairement par la suite, on obtient un organe qui peut être dimensionné de façon à assurer simultanément :

  • l'étanchéité entre l'amont et l'aval de la membrane ;
  • une bonne réactivité et une amplitude de changement d'état satisfaisante, par un dimensionnement approprié de la membrane de façon à ce qu'elle présente une surface optimale.
In addition, with the membrane of the master actuator, and as it will appear more clearly later, we obtain an organ that can be sized to ensure simultaneously:
  • the seal between the upstream and the downstream of the membrane;
  • a good reactivity and a satisfactory amplitude of change of state, by a suitable dimensioning of the membrane so that it has an optimal surface.

Dans ce cas, ladite membrane est avantageusement montée dans une enceinte, de façon à former une cloison déformable étanche entre deux passages opposés l'un à l'autre ménagés dans l'enceinte, à savoir un conduit primaire communiquant avec le réseau de sprinklers et un passage secondaire au travers duquel un axe couplé à l'étrier peut coulisser, ledit axe étant solidarisé à la membrane et à un lest.In this case, said membrane is advantageously mounted in an enclosure, so as to form a sealed deformable partition between two passages opposite to each other formed in the enclosure, namely a primary conduit communicating with the sprinkler system and a secondary passage through which an axis coupled to the yoke can slide, said axis being secured to the membrane and a ballast.

L'enceinte est alors avantageusement délimitée par une cloche et un disque de fermeture, la membrane étant pincée entre la cloche et le disque.The enclosure is then advantageously delimited by a bell and a closure disk, the membrane being clamped between the bell and the disk.

Selon un mode de réalisation particulier, ledit axe est également couplé à un ressort destiné à repousser la membrane vers la deuxième position.According to a particular embodiment, said axis is also coupled to a spring for pushing the membrane towards the second position.

Avantageusement, ledit ressort est monté en compression en appui sur une molette réglable en position sur ledit axe.Advantageously, said spring is mounted in compression bearing on a wheel adjustable in position on said axis.

Ainsi, il est possible d'adapter la force exercée par le ressort, en vue de régler la réactivité de l'actionneur maître.Thus, it is possible to adapt the force exerted by the spring, in order to adjust the reactivity of the master actuator.

Selon un mode de réalisation particulier, le moyen de verrouillage comprend une entretoise de verrouillage basculante montée à une extrémité d'un levier pivotant relié par l'autre de ses extrémités à l'étrier.According to a particular embodiment, the locking means comprises a tilting locking spacer mounted at one end of a pivoting lever connected by the other of its ends to the yoke.

On obtient de cette façon un ensemble mécanique lié au verrouillage/déverrouillage qui peut être réalisé de façon à impliquer des courses telles que le déclenchement du dispositif ne peut être engendré par de simples variations ou secousses s'exerçant sur l'actionneur maître.In this way, a mechanical assembly related to the locking / unlocking which can be achieved so as to involve strokes such that the triggering of the device can not be generated by simple variations or shaking on the master actuator.

Dans ce cas, le levier est avantageusement monté pivotant sur l'actuateur.In this case, the lever is advantageously pivotally mounted on the actuator.

Selon un mode de réalisation préférentiel, l'actuateur comprend un piston mobile dans une cavité du corps, et présente une portion externe s'étendant hors de ladite cavité et étant pourvue d'une bague sur laquelle le moyen de verrouillage est destiné à agir.According to a preferred embodiment, the actuator comprises a piston movable in a cavity of the body, and has an outer portion extending out of said cavity and being provided with a ring on which the locking means is intended to act.

Dans ce cas, un ressort est avantageusement monté dans la cavité du corps de l'actuateur de façon à repousser le piston hors de la cavité lorsque l'étrier est dans ladite deuxième position.In this case, a spring is advantageously mounted in the cavity of the body of the actuator so as to push the piston out of the cavity when the stirrup is in said second position.

Un tel agencement permet d'obtenir un changement d'état de l'actuateur de façon instantanée ou quasiment.Such an arrangement makes it possible to obtain a change of state of the actuator instantaneously or almost.

Préférentiellement, le ressort présente une première extrémité coopérant avec le piston et une deuxième extrémité, opposée à la première, en appui sur une platine du corps, ladite platine présentant un doigt central sur lequel le ressort est enfilé.Preferably, the spring has a first end cooperating with the piston and a second end, opposite to the first, bearing on a plate of the body, said plate having a central finger on which the spring is threaded.

De cette façon, on obtient un positionnement radial du ressort, qu'il soit à l'état tendu ou détendu. On évite ainsi qu'il prenne une déformation, par exemple dans le sens d'une courbure longitudinale, qui pourrait nuire au bon fonctionnement de l'actuateur, par exemple en freinant le changement d'état de l'actuateur lors du déclenchement de l'installation.In this way, a radial positioning of the spring is obtained, whether in the stretched or relaxed state. It avoids that he takes a deformation, for example in the direction of a longitudinal curvature, which could adversely affect the proper functioning of the actuator, for example by braking the change of state of the actuator when triggering the installation.

Selon une autre caractéristique de l'invention, l'actuateur comprend un piston mobile dans une cavité du corps et le conduit d'arrivée d'eau communique avec une canalisation qui pilote la vanne générale de mise en eau du réseau de sprinklers, la vanne générale étant fermée quand la canalisation pilote est en eau sous pression et ouverte quand la canalisation pilote est hors pression, le piston étant mobile entre une position d'obturation et le conduit d'arrivée maintenant la pression dans la canalisation pilote et une position de libération autorisant la mise en communication du conduit d'arrivée avec le conduit de départ.According to another characteristic of the invention, the actuator comprises a piston movable in a cavity of the body and the water inlet conduit communicates with a pipe which controls the general valve for flooding the sprinkler system, the valve general being closed when the pilot line is in pressurized water and open when the pilot line is depressurized, the piston being movable between a closed position and the inlet conduit maintaining the pressure in the pilot line and a release position authorizing the communication of the arrival conduit with the departure conduit.

Selon un mode de réalisation avantageux, le conduit de départ communique avec un circuit de vidange d'eau.According to an advantageous embodiment, the starting conduit communicates with a water draining circuit.

Selon un mode de réalisation préférentiel, l'actuateur comprend un piston mobile dans une cavité du corps, le corps présentant une première extrémité au travers de laquelle le piston peut se déplacer, et une deuxième extrémité opposée à la première, le conduit de départ étant ménagé dans la deuxième extrémité ou entre le conduit de départ et la deuxième extrémité, le conduit de départ communiquant avec un circuit à la pression atmosphérique.According to a preferred embodiment, the actuator comprises a piston movable in a cavity of the body, the body having a first end through which the piston can move, and a second end opposite to the first, the starting conduit being formed in the second end or between the starting duct and the second end, the starting duct communicating with a circuit at atmospheric pressure.

Un tel conduit de départ, positionné de cette façon et étant à la pression atmosphérique, tend à favoriser le déplacement du piston, en particulier au tout départ de son changement d'état pour aller vers la position de déclenchement.Such a starting pipe, positioned in this way and being at atmospheric pressure, tends to promote the movement of the piston, in particular at the start of its change of state to go to the trigger position.

Selon encore une autre caractéristique de l'invention, l'actuateur comprend un piston mobile dans une cavité du corps, un troisième conduit étant ménagé dans le corps et étant susceptible d'être mis en communication avec le conduit d'arrivée dans ladite deuxième position de l'étrier, le troisième conduit communiquant avec un circuit d'alarme hydraulique.According to yet another characteristic of the invention, the actuator comprises a piston movable in a body cavity, a third conduit being formed in the body and being capable of being placed in communication with the arrival conduit in said second position. of the stirrup, the third conduit communicating with a hydraulic alarm circuit.

Ainsi, l'actuateur selon l'invention permet de déclencher simultanément, ou quasiment, la mise en eau du réseau de sprinklers et l'activation de l'alarme hydraulique.Thus, the actuator according to the invention can trigger simultaneously, or almost, the impoundment of the sprinkler system and the activation of the hydraulic alarm.

L'invention concerne également un dispositif de déclenchement de la mise sous eau d'un réseau de sprinklers dans un système sous vide, comprenant au moins un actuateur comprenant un corps dans lequel débouche un conduit d'arrivée d'eau et un conduit de départ d'eau susceptibles d'être mis en communication, un organe de l'actuateur étant apte à autorisant/interdire la mise en communication du conduit d'arrivée d'eau avec le conduit de départ d'eau de telle sorte que l'interdiction de la mise en communication des deux conduits maintienne le réseau de sprinklers sous vide tandis que la mise en communication des deux conduits déclenche la mise en eau du réseau de sprinklers, caractérisé en ce qu'il comprend :

  • un actionneur maître sensible à la pression présente dans le réseau de sprinklers et susceptible de déplacer un étrier d'une première à une deuxième position, ledit actionneur maître comprenant une membrane mobile entre une première position correspondant à un état sous vide du réseau de sprinklers et une deuxième position correspondant à une mise à la pression atmosphérique du réseau de sprinklers, lesdites première et deuxième positions correspondant auxdites première et deuxième positions de l'étrier;
  • un moyen de verrouillage en position de l'organe de l'actuateur interdisant la mise en communication des deux conduits ;
  • un organe de transmission entre ledit étrier et ledit moyen de verrouillage apte à permettre à l'organe de l'actuateur de passer dans la position autorisant la mise en communication des deux conduits lorsque l'étrier est dans ladite deuxième position.
The invention also relates to a device for triggering the setting under water of a sprinkler system in a vacuum system, comprising at least one actuator comprising a body into which a water inlet duct and a starting duct open. water likely to be placed in communication, an actuator member being able to authorize / prohibit the communication of the water inlet conduit with the water outlet conduit so that the prohibition communicating the two conduits maintains the vacuum sprinkler network while the communication of the two conduits triggers the impounding of the sprinkler network, characterized in that it comprises:
  • a pressure-sensitive master actuator present in the sprinkler array and capable of moving a caliper from a first to a second position, said master actuator comprising a movable membrane between a first position corresponding to a vacuum state of the sprinkler array and a second position corresponding to an atmospheric pressure setting of the sprinkler array, said first and second positions corresponding to said first and second positions of the stirrup;
  • a locking means in position of the actuator member prohibiting the placing in communication of the two conduits;
  • a transmission member between said yoke and said locking means adapted to allow the actuator member to move into the position allowing the setting communicating the two ducts when the stirrup is in said second position.

D'autres caractéristiques et avantages de l'invention apparaitront plus clairement à la lecture de la description suivante d'un mode de réalisation préférentiel de l'invention, donnée à titre de simple exemple illustratif et non limitatif, et des dessins annexés parmi lesquels :

  • la figure 1 est une vue d'un actuateur selon l'art antérieur ;
  • la figure 2 est une représentation schématique d'une installation de lutte contre les incendies selon l'invention ;
  • la figure 3 est une vue d'un dispositif de déclenchement destiné à équiper une installation selon l'invention ;
  • les figures 4 et 5 sont des représentations schématiques d'un actuateur d'un dispositif de déclenchement selon l'invention, respectivement en position d'attente et en position déclenchée de l'installation ;
  • les figures 6 et 7 illustrent schématiquement un actionneur maître d'un dispositif de déclenchement selon l'invention, respectivement en position d'attente et en position déclenchée de l'installation ;
  • la figure 8 est une vue schématique d'une vanne générale de mise sous eau du réseau de sprinklers pilotée par un dispositif de déclenchement selon l'invention.
Other features and advantages of the invention will appear more clearly on reading the following description of a preferred embodiment of the invention, given by way of a simple illustrative and nonlimiting example, and the appended drawings in which:
  • the figure 1 is a view of an actuator according to the prior art;
  • the figure 2 is a schematic representation of a fire-fighting installation according to the invention;
  • the figure 3 is a view of a trigger device for equipping an installation according to the invention;
  • the Figures 4 and 5 are schematic representations of an actuator of a trigger device according to the invention, respectively in the waiting position and in the tripped position of the installation;
  • the Figures 6 and 7 schematically illustrate a master actuator of a trigger device according to the invention, respectively in the standby position and in the triggered position of the installation;
  • the figure 8 is a schematic view of a general valve underwater sprinkler network driven by a trigger device according to the invention.

En référence à la figure 2, une installation de lutte contre les incendies selon l'invention comprend :

  • un réseau de sprinklers S destiné à être maintenu sous vide en position d'attente (c'est à dire dans la configuration « hors incendie » de l'installation) ;
  • une pompe à vide 1 reliée au réseau de sprinklers S ;
  • un réservoir de régulation 10 ;
  • un dispositif de déclenchement 2 relié au circuit sous vide et à la pompe à vide 1 par l'intermédiaire d'une bouteille de déclenchement 20 ;
  • une vanne générale 3 connue de l'homme du métier par la désignation « Inbal » (marque déposée), pilotée par le dispositif de déclenchement 2, et destiné, en cas d'incendie, à permettre l'alimentation en eau du réseau de sprinklers S.
With reference to the figure 2 a fire-fighting installation according to the invention comprises:
  • a network of sprinklers S intended to be kept under vacuum in the waiting position (ie in the "non-fire" configuration of the installation);
  • a vacuum pump 1 connected to the sprinkler network S;
  • a regulating tank 10;
  • a trigger device 2 connected to the vacuum circuit and to the vacuum pump 1 via a trigger bottle 20;
  • a general valve 3 known to those skilled in the art by the designation "Inbal" (registered trademark), driven by the trigger device 2, and intended, in case of fire, to allow the water supply of the sprinkler system S.

Selon un principe connu de ce type d'installation, dont le principe a été décrit dans le document de brevet publié sous le numéro FR-2 724 323 , la mise en service d'une telle installation prévoit la mise sous vide du réseau de sprinklers S, le vide étant ainsi également présent dans la ligne 21 conduisant au dispositif de déclenchement 2. Tant que le vide est présent dans cette ligne 21, le dispositif de déclenchement 2 maintient sous pression en eau la chambre de contrôle de la vanne générale 3, ce qui maintient celle-ci dans une position de fermeture. Si le fusible de l'un des sprinklers éclate, le réseau de sprinklers S se met à la pression atmosphérique, qui se propage également au niveau de la ligne 21, ce qui fait basculer l'état du dispositif de déclenchement 2, qui autorise alors, comme cela va être décrit plus en détails par la suite, la chute de pression dans la chambre de contrôle de la vanne générale 3, ce qui va provoquer l'ouverture de cette dernière et la mise en eau du réseau de sprinklers S.According to a known principle of this type of installation, the principle of which has been described in the patent document published under the number FR-2,724,323 , the commissioning of such an installation provides for the evacuation of the sprinkler network S, the vacuum thus also being present in the line 21 leading to the trigger device 2. As long as the vacuum is present in this line 21, the triggering device 2 keeps the control chamber of the general valve 3 under water pressure, which keeps it in a closed position. If the fuse of one of the sprinklers bursts, the sprinkler network S starts at atmospheric pressure, which also propagates at the line 21, which switches the state of the trigger device 2, which then allows , as will be described in more detail below, the pressure drop in the control chamber of the general valve 3, which will cause the opening of the latter and the impoundment of the sprinkler network S.

En référence à la figure 3, le dispositif de déclenchement 2 équipant une installation selon l'invention comprend :

  • un actuateur 4 ;
  • un actionneur maître 5 relié à la ligne 21 mentionnée précédemment, l'actionneur maître étant destiné à être sensible à la pression présente dans le réseau de sprinklers en vue de déplacer un étrier d'une première à une deuxième position tel que décrit ci-après.
With reference to the figure 3 , the triggering device 2 equipping an installation according to the invention comprises:
  • an actuator 4;
  • a master actuator 5 connected to the line 21 previously mentioned, the master actuator being intended to be sensitive to the pressure present in the sprinkler array in order to move a stirrup from a first to a second position as described below .

En référence aux figures 4 et 5, un actuateur destiné à être intégré dans une installation selon l'invention comprend un corps 40, sous forme d'un cylindre, présentant une cavité 400 centrale, et dans lequel débouchent un conduit 41 d'arrivée d'eau ainsi qu'un conduit 42 de départ d'eau, les deux conduits étant susceptibles d'être mis en communication l'un avec l'autre.With reference to Figures 4 and 5 , an actuator intended to be integrated in an installation according to the invention comprises a body 40, in the form of a cylinder, having a central cavity 400, and into which a conduit 41 for supplying water and a conduit 42 of water flow, the two conduits being capable of being put in communication with each other.

L'actuateur intègre en outre un piston 43, constituant un organe de l'actuateur apte à autoriser/interdire la mise en communication du conduit 41 avec le conduit 42.The actuator also incorporates a piston 43, constituting an actuator member adapted to allow / prohibit the placing in communication of the conduit 41 with the conduit 42.

Selon le principe de fonctionnement d'une installation de lutte contre les incendies mettant en oeuvre un réseau de sprinklers sous vide tel que rappelé précédemment, le conduit d'arrivée d'eau communique avec une canalisation pilote 22 reliée à la chambre de contrôle de la vanne générale 3 (figure 2), cette dernière étant fermée quand la canalisation pilote 22 est en eau sous pression et ouverte quand la canalisation pilote est hors pression.According to the operating principle of a fire-fighting installation using a vacuum sprinkler network as mentioned above, the water supply pipe communicates with a pilot line 22 connected to the control chamber of the general valve 3 ( figure 2 ), the latter being closed when the pilot line 22 is in pressurized water and open when the pilot line is depressurized.

Le conduit 42 de départ d'eau communique quant à lui avec un circuit de vidange d'eau 23, à la pression atmosphérique.The conduit 42 of water flow communicates with a water drain circuit 23, at atmospheric pressure.

Ainsi, le piston 43 de l'actuateur est mobile entre une position d'obturation du conduit 41, ce qui maintient la pression dans la canalisation pilote 22 (se traduisant par une position de fermeture de la vanne générale 3), et une position de libération autorisant la mise en communication du conduit 41 d'arrivée d'eau avec le conduit 42 de départ d'eau, ce qui fait chuter la pression dans la chambre de contrôle de la vanne générale et provoque l'ouverture de celle-ci, et donc la mise en eau du réseau de sprinklers.Thus, the piston 43 of the actuator is movable between a closed position of the duct 41, which maintains the pressure in the pilot line 22 (resulting in a closed position of the general valve 3), and a position of release allowing the communication of the conduit 41 of water inlet with the conduit 42 of water flow, which causes the pressure in the control chamber of the general valve and causes the opening thereof, and thus the impoundment of the sprinkler system.

Tel que cela apparaît sur les figures 4 et 5, le corps 40 de l'actuateur présente en outre un troisième conduit 44, susceptible d'être mis en communication avec le conduit 41 d'arrivée d'eau lorsque le piston 43 est dans la position de déclenchement, telle que celle illustrée par la figure 5. Ce troisième conduit 44 communique avec un circuit d'alarme hydraulique 24 (figure 2).As it appears on the Figures 4 and 5 , the body 40 of the actuator further has a third conduit 44, capable of being placed in communication with the conduit 41 of water inlet when the piston 43 is in the release position, such as that illustrated by the figure 5 . This third conduit 44 communicates with a hydraulic alarm circuit 24 ( figure 2 ).

Tel que cela apparaît sur les figures 4 et 5, le piston 43 comprend une portion d'obturation 430, qui se prolonge par un axe 431 dont une portion 432 externe s'étend hors du corps 40 de l'actuateur. Cette portion 432 présente à son extrémité une boule 433 de préhension. En outre, la portion 432 présente, hors du corps de l'actuateur, une bague 434, venant en appui contre le corps de l'actuateur en position d'attente de celui-ci.As it appears on the Figures 4 and 5 , the piston 43 comprises a closing portion 430, which is extended by an axis 431, an outer portion 432 extends out of the body 40 of the actuator. This portion 432 has at its end a ball 433 gripping. In addition, the portion 432 has, outside the body of the actuator, a ring 434, bearing against the body of the actuator in the waiting position thereof.

De plus, la portion d'obturation 430 du piston présente un évidement central 435 formant logement pour un ressort 436, monté dans le corps de l'actuateur de façon à repousser le piston 43 hors de la cavité lors du changement d'état de l'actuateur. Selon la configuration illustrée par les figures 4 et 5, le ressort 436 est donc monté en compression dans l'évidement central de la portion d'obturation du piston, dans la position d'attente de l'actuateur, tel qu'illustré par la figure 4.In addition, the closing portion 430 of the piston has a central recess 435 forming a housing for a spring 436, mounted in the body of the actuator so as to push the piston 43 out of the cavity during the change of state of the 'actuator. According to the configuration illustrated by the Figures 4 and 5 the spring 436 is thus mounted in compression in the central recess of the piston sealing portion, in the actuator's waiting position, as illustrated by the figure 4 .

En outre, en référence à la figure 5, le ressort 436 présente une première extrémité 4360 logée dans l'évidement central de la portion d'obturation du piston, et destiné à coopérer avec celui-ci, tandis que la deuxième extrémité 4361 du ressort, opposé à la première, est en appui sur une platine 45 constituant le fond du corps de l'actuateur. Cette platine présente un doigt central 451 sur lequel est enfilée l'extrémité 4361 du ressort.In addition, with reference to figure 5 , the spring 436 has a first end 4360 housed in the central recess of the closing portion of the piston, and intended to cooperate therewith, while the second end 4361 of the spring, opposite the first, is in abutment. on a plate 45 constituting the bottom of the body of the actuator. This plate has a central finger 451 on which is threaded the end 4361 of the spring.

Avec un tel montage, le piston est avantageusement guidé en translation d'une part au niveau de son axe 431 et, d'autre part, grâce au ressort 436.With such an assembly, the piston is advantageously guided in translation on the one hand at its axis 431 and, secondly, thanks to the spring 436.

Selon le présent mode de réalisation, le conduit 42 de départ d'eau est ménagé dans la platine 45 et est relié, comme indiqué précédemment, à un circuit de vidange 23, mis à la pression atmosphérique dans la position d'attente de l'installation.According to the present embodiment, the conduit 42 of water flow is formed in the plate 45 and is connected, as indicated above, to a drain circuit 23, put at atmospheric pressure in the waiting position of the installation.

On note que la partie arrière du piston susceptible d'être en contact avec la platine 45 présente des reliefs destinés à éviter tout effet ventouse entre le piston et la platine.Note that the rear portion of the piston may be in contact with the plate 45 has reliefs intended to avoid any suction effect between the piston and the plate.

L'actionneur maître 5 d'un dispositif de déclenchement selon l'invention est décrit ci-après en référence aux figures 6 et 7.The master actuator 5 of a trigger device according to the invention is described below with reference to the Figures 6 and 7 .

Tel que cela apparaît sur ces figures, un actionneur maître selon le présent mode de réalisation de l'invention comprend :

  • une enceinte 50 délimitée par une cloche 501, fermée à sa base par un disque de fermeture 502, ces deux éléments délimitant l'enceinte étant solidarisés entre eux par des moyens de vissage 503 répartis de façon périphérique autour de l'enceinte ;
  • une membrane 51, mobile entre une première position correspondant à un état sous vide du réseau de sprinklers, tel qu'illustré par la figure 6, et une deuxième position correspondant à une mise à la pression atmosphérique du réseau de sprinklers, tel qu'illustré par la figure 7 ;
  • un axe 52 solidarisé à la membrane 51, en position centrale de celle-ci ;
  • un lest 53 porté à l'extrémité de l'axe 52, et solidaire tant de l'axe 52 que de la membrane 51 ;
  • un étrier 54, dans le prolongement de l'axe 52 hors de l'enceinte 50.
As shown in these figures, a master actuator according to the present embodiment of the invention comprises:
  • an enclosure 50 delimited by a bell 501, closed at its base by a closure disk 502, these two elements delimiting the enclosure being joined together by screwing means 503 distributed peripherally around the enclosure;
  • a membrane 51, movable between a first position corresponding to a vacuum state of the sprinkler array, as illustrated by the figure 6 , and a second position corresponding to an atmospheric pressure setting of the sprinkler system, as illustrated by the figure 7 ;
  • an axis 52 secured to the membrane 51 in the central position thereof;
  • a ballast 53 carried at the end of the axis 52, and secured to both the axis 52 and the membrane 51;
  • a stirrup 54, in the extension of the axis 52 outside the enclosure 50.

La membrane 51 est montée dans l'actionneur maître de telle sorte qu'elle est pincée entre la cloche 501 et le disque 502, ceci sur toute la périphérie de la membrane. On comprend que, selon ce montage, toute la surface de la membrane, ou quasiment, est exposé à la pression régnant dans l'enceinte 50. La membrane constitue donc l'organe sensible de l'actionneur maître, susceptible d'engendrer le changement d'état de celui-ci sous l'effet du changement de pression dans l'enceinte. Et seul l'éclatement du fusible d'un sprinkler peut entraîner un changement de pression dans l'enceinte, contrairement à l'actuateur de l'art antérieur dont la chambre est à la pression atmosphérique, ce qui, en cas de léger mouvement de l'ogive sous l'effet de secousses ou de vibrations, permet le changement d'état de l'actuateur.The membrane 51 is mounted in the master actuator so that it is clamped between the bell 501 and the disk 502, this over the entire periphery of the membrane. It is understood that, according to this arrangement, the entire surface of the membrane, or almost, is exposed to the pressure in the chamber 50. The membrane is therefore the sensitive member of the master actuator, likely to cause change state of the latter under the effect of the pressure change in the enclosure. And only the bursting of the fuse of a sprinkler can cause a pressure change in the chamber, unlike the actuator of the prior art whose chamber is at atmospheric pressure, which, in case of slight movement of the warhead under the effect of shaking or vibration, allows the change of state of the actuator.

L'actionneur maître est destiné à agir sur l'actuateur 4 par un déplacement de l'étrier 54, d'une première position à une deuxième position, la première position de l'étrier correspondant à la première position de la membrane 51 illustrée par la figure 6, et la deuxième position de l'étrier correspondant à la deuxième position de la membrane illustrée par la figure 7.The master actuator is intended to act on the actuator 4 by a movement of the stirrup 54, from a first position to a second position, the first position of the stirrup corresponding to the first position of the membrane 51 illustrated by the figure 6 , and the second position of the stirrup corresponding to the second position of the diaphragm illustrated by the figure 7 .

La cloche 501 présente en sa partie supérieure une ouverture 5011 mettant en communication l'intérieur de l'enceinte 50 avec un conduit primaire 500 relié à la ligne 21 illustrée par la figure 2.The bell 501 has in its upper part an opening 5011 placing the interior of the enclosure 50 in communication with a primary duct 500 connected to the line 21 illustrated by FIG. figure 2 .

On note que le lest 53 présente sur sa face supérieure des reliefs destinés à éviter que le lest constitue un obturateur du conduit primaire 500, dans la position d'attente de l'actionneur maître correspondant à la première position de la membrane et de l'étrier. On s'affranchit de cette façon du risque que le lest ne reste plaqué à l'entrée du conduit primaire, par un effet ventouse, ce qui conduirait à une mise en échec du déclenchement.Note that the ballast 53 has on its upper face reliefs intended to prevent the ballast constitutes a shutter of the primary conduit 500, in the waiting position of the master actuator corresponding to the first position of the membrane and the stirrup. In this way, the risk of the ballast being plated at the inlet of the primary duct is eliminated by a suction effect, which would lead to failure of the trip.

Le disque 502 présente quant à lui un passage secondaire 5021 au travers duquel l'axe 52 couplé à l'étrier 54 peut coulisser.The disc 502 has meanwhile a secondary passage 5021 through which the shaft 52 coupled to the yoke 54 can slide.

Tel qu'illustré par les figures 6 et 7, un ressort 55 est en contact par l'une de ses extrémités avec l'axe 52, par l'intermédiaire d'une molette 520 et, par l'autre de ses extrémités, avec l'extrémité du passage secondaire 5021. Dans la position illustrée par la figure 6, le ressort 55 est comprimé et tend à exercer sur l'axe 52, par l'intermédiaire de la molette 520, une force dirigée vers le bas se conjuguant avec celle du lest 53. Dans la position illustrée par la figure 7, le ressort est au repos.As illustrated by Figures 6 and 7 a spring 55 is in contact at one of its ends with the axis 52, by means of a wheel 520 and, at the other of its ends, with the end of the secondary passage 5021. In the position illustrated by the figure 6 , the spring 55 is compressed and tends to exert on the axis 52, via the wheel 520, a downward force conjugating with that of the ballast 53. In the position illustrated by the figure 7 the spring is at rest.

Avec ce montage, on obtient une force suffisamment importante pour déclencher l'actionneur maître et faire basculer l'état de l'actuateur, ceci malgré la force en réaction de l'actuateur du fait de l'action de son propre ressort 436 qui tend à maintenir très fermement la bague 434 contre le moyen de verrouillage, ce qui tend donc à s'opposer au déverrouillage.With this assembly, a sufficiently large force is obtained to trigger the master actuator and to switch the state of the actuator, this in spite of the reaction force of the actuator due to the action of its own spring 436 which tends to very firmly hold the ring 434 against the locking means, which tends to oppose the unlocking.

Bien entendu, la force du ressort 55 est calibrée en fonction du poids du lest. En outre, la compression du ressort 55 peut être préréglée en modifiant la position de la molette 520, la position de celle-ci pouvant être modifiée le long de l'axe 52.Of course, the force of the spring 55 is calibrated according to the weight of the ballast. In addition, the compression of the spring 55 can be preset by changing the position of the wheel 520, the position thereof can be changed along the axis 52.

En référence aux figures 3 à 7, on décrit ci-après l'interaction de l'actionneur maître sur l'actuateur d'un dispositif de déclenchement selon l'invention.With reference to Figures 3 to 7 , hereinafter described the interaction of the master actuator on the actuator of a trigger device according to the invention.

En référence à la figure 3, on note que l'étrier 54 est couplé à un levier 6. Pour ce faire, le levier 6 présente à l'une de ses extrémités une lumière oblongue 61 dans laquelle peut coulisser un ergot 540 prévu à l'extrémité inférieure de l'étrier 54.With reference to the figure 3 , it is noted that the stirrup 54 is coupled to a lever 6. To do this, the lever 6 has at one of its ends an oblong slot 61 in which can slide a lug 540 provided at the lower end of the stirrup 54.

Le levier 6 présente à son extrémité opposée à la lumière oblongue 61 un moyen de verrouillage 60, destiné à maintenir l'actuateur dans la position illustrée par la figure 4 ou, inversement, à libérer celui-ci de telle sorte qu'il puisse se déplacer vers et jusqu'à la position illustrée par la figure 5.The lever 6 has at its opposite end to the oblong slot 61 a locking means 60, intended to hold the actuator in the position illustrated by FIG. figure 4 or, conversely, to release the latter so that it can move towards and to the position illustrated by the figure 5 .

Le moyen de verrouillage 60, en position de verrouillage, agit sur la bague 434 portée par l'axe 431 du piston.The locking means 60, in the locking position, acts on the ring 434 carried by the axis 431 of the piston.

Le levier est pivotant entre la position illustrée par la figure 4 et la position illustrée par la figure 5. Pour cela, le levier 6 est monté pivotant autour d'un axe 62 porté par le corps 40 de l'obturateur.The lever is pivoted between the position illustrated by the figure 4 and the position illustrated by the figure 5 . For this, the lever 6 is pivotally mounted about an axis 62 carried by the body 40 of the shutter.

On note que la position de l'axe 62 est notablement plus proche de l'extrémité du levier côté étrier que celle du côté du moyen de verrouillage, ceci de façon à augmenter le plus possible l'amplitude du déplacement du levier à l'extrémité du levier du côté du moyen de verrouillage par rapport à celle côté étrier.Note that the position of the axis 62 is significantly closer to the end of the yoke lever side than that of the side of the locking means, so as to increase as much as possible the amplitude of the movement of the lever at the end lever on the side of the locking means with respect to the yoke side.

En outre, le moyen de verrouillage 60 prend la forme d'une entretoise 63 montée pivotante à l'extrémité du levier 6 autour d'un axe 64.In addition, the locking means 60 takes the form of a spacer 63 pivotally mounted at the end of the lever 6 about an axis 64.

Ainsi, lors du pivotement du levier 6 de la position illustrée par la figure 4 vers la position illustrée par la figure 5, le moyen de verrouillage 60 peut pivoter autour de son axe 64, autorisant ainsi le déplacement circulaire de l'extrémité correspondante du levier, et permettant de se dégager de la position de verrouillage.Thus, during the pivoting of the lever 6 of the position illustrated by the figure 4 towards the position illustrated by the figure 5 , the locking means 60 can pivot about its axis 64, thus allowing the circular movement of the corresponding end of the lever, and to disengage from the locking position.

L'entretoise de verrouillage peut prendre la forme d'une tête présentant une échancrure en U inversé dans laquelle la portion externe 432 du piston vient se loger en position de verrouillage.The locking spacer may take the form of a head having an inverted U-shaped recess in which the outer portion 432 of the piston is housed in the locking position.

Le fonctionnement du dispositif de déclenchement est le suivant.The operation of the triggering device is as follows.

Lorsque le conduit 500 est à la pression atmosphérique, l'obturateur constitué par le lest 53 chute vers le disque 502, en entrainant la membrane 51, et en déplaçant, par l'intermédiaire de l'axe 52, l'étrier 54 vers le bas. L'ergot 540 de l'étrier 54 présent dans la lumière oblongue 61 pousse alors l'extrémité correspondante du levier vers le bas, provoquant le pivotement du levier 6 autour de son axe 62 et, par conséquent, la remontée de l'entretoise 63 de verrouillage vers le haut, simultanément avec le basculement de celui-ci autour de son axe 64. On comprend que le levier agi en tant qu'organe de transmission entre l'étrier et le moyen de verrouillage en position du piston de l'actuateur.When the duct 500 is at atmospheric pressure, the shutter constituted by the ballast 53 falls towards the disk 502, driving the membrane 51, and by moving, via the axis 52, the stirrup 54 towards the low. The lug 540 of the bracket 54 present in the oblong slot 61 then pushes the corresponding end of the lever downwards, causing the lever 6 to pivot about its axis 62 and, consequently, the rise of the spacer 63 locking up, simultaneously with the tilting thereof about its axis 64. It is understood that the lever acts as a transmission member between the yoke and the locking means in position of the piston of the actuator .

Le piston 43 de l'actuateur est alors libéré et le ressort 432 repousse le piston vers la position illustrée par la figure 5, dans la position de déclenchement de la mise en eau du réseau de sprinklers.The piston 43 of the actuator is then released and the spring 432 pushes the piston towards the position illustrated by the figure 5 , in the triggering position of the impedance of the sprinkler system.

La course du piston est prévue de telle sorte que le conduit 41 communique d'une part avec le conduit 42 de départ d'eau et, d'autre part, avec le troisième conduit 44.The stroke of the piston is provided in such a way that the duct 41 communicates on the one hand with the conduit 42 for the flow of water and, on the other hand, with the third conduit 44.

Il s'en suit un écoulement de l'eau sous pression présente dans le conduit 41 vers le conduit 42 et vers le conduit 44, provoquant une chute de pression dans la conduite pilote 22 et un déclenchement de l'alarme hydraulique reliée au troisième conduit 44.It follows a flow of pressurized water present in the conduit 41 to the conduit 42 and to the conduit 44, causing a pressure drop in the pilot line 22 and triggering of the hydraulic alarm connected to the third conduit 44.

La chute de pression dans la conduite pilote provoque le changement d'état de la vanne générale 3, décrite ci-après en référence à la figure 8.The pressure drop in the pilot line causes the change of state of the general valve 3, described hereinafter with reference to the figure 8 .

Tel qu'illustré par cette figure, une telle vanne générale 3, connue de l'homme du métier sous la désignation de « vanne Inbal » comprend :

  • un corps externe 30 ;
  • une chambre de contrôle 31, s'étendant à l'intérieur du corps 30, est délimitée par un manchon déformable 310 ;
  • un disque d'étanchéité 32, occupant une position centrale à l'intérieur du corps 30 de la vanne, et étant porté par un ensemble support 320.
As illustrated by this figure, such a general valve 3, known to those skilled in the art under the designation "Inbal valve" comprises:
  • an outer body 30;
  • a control chamber 31, extending inside the body 30, is delimited by a deformable sleeve 310;
  • a sealing disc 32, occupying a central position within the body 30 of the valve, and being carried by a support assembly 320.

Lorsque de l'eau sous pression suffisante est présente dans la chambre de contrôle 31, le manchon 310 vient s'appliquer contre le disque d'étanchéité 32, ce qui correspond à la position fermée de la vanne générale 3.When water under sufficient pressure is present in the control chamber 31, the sleeve 310 is pressed against the sealing disc 32, which corresponds to the closed position of the general valve 3.

Dans cette position, de l'eau sous pression est cantonnée d'un côté de la vanne.In this position, pressurized water is confined to one side of the valve.

Lorsque la pression chute dans la chambre de contrôle 31, la pression à l'entrée de la vanne repousse le manchon 310 vers la paroi interne de la vanne, ouvrant le passage et permettant l'écoulement au travers de la vanne.When the pressure drops in the control chamber 31, the pressure at the inlet of the valve pushes the sleeve 310 towards the inner wall of the valve, opening the passage and allowing flow through the valve.

Cette ouverture correspond au déclenchement de l'installation en cas d'incendie, et l'ouverture de la vanne permet la mise en eau du réseau des sprinklers.This opening corresponds to the triggering of the installation in case of fire, and the opening of the valve allows the watering of the sprinkler network.

Claims (16)

  1. Device for triggering the filling of a sprinkler system (S) with water in a vacuum system, comprising at least one actuator (4) comprising a body (40) in which a water inlet pipe (41) and a water outlet pipe (42) open out, both able to be put in communication, a member of the actuator being able to allow/prevent the water inlet pipe being put in communication with the water outlet pipe so that the prevention of the communication of the two pipes maintains the sprinkler system under vacuum while putting the two pipes in communication triggers the filling of the sprinkler system with water, the triggering device comprising:
    - a master actuator (5) sensitive to the pressure present in the sprinkler system and able to move a yoke (54) from a first position to a second position;
    - a means (60) for locking the member of the actuator in position, preventing the two pipes from being put in communication;
    - a transmission member between said yoke (54) and said locking means (60) able to allow the member of the actuator to pass into the position allowing the putting of the two pipes in communication when the yoke is in said second position,
    characterised in that said master actuator (5) comprises a membrane (51) able to move between a first position corresponding to a state of the sprinkler system being under vacuum and a second position corresponding to an opening of the sprinkler system to atmospheric pressure, said first and second positions of the membrane (51) corresponding to said first and second positions of the yoke (54) .
  2. Firefighting installation, including a vacuum sprinkler system (S),
    characterised in that it includes the triggering device (2) according to claim 1.
  3. Firefighting installation according to claim 2, characterised in that said membrane (51) is mounted in a chamber (50), so as to form an impermeable deformable partition between two passages opposite each other provided in the chamber, namely a primary pipe (500) communicating with the sprinkler system and a secondary passage (5021) through which a spindle (52) coupled to the yoke can slide, said spindle (52) being secured to the membrane (51) and to a ballast (53).
  4. Firefighting installation according to claim 3, characterised in that the chamber (50) is delimited by a bell (501) and a closure disc (502), the membrane (51) being gripped between the bell (501) and the disc (502).
  5. Firefighting installation according to claim 3, characterised in that said spindle (52) is also coupled to a spring (55) intended to push the membrane (51) towards the second position.
  6. Firefighting installation according to claim 5, characterised in that said spring (55) is mounted under compression in abutment on a wheel (520) adjustable for position on said spindle (52).
  7. Firefighting installation according to claim 2, characterised in that the locking means (60) comprises a tilting locking strut (63) mounted at one end of a pivoting lever (6) connected by its other end to the yoke (54) .
  8. Firefighting installation according to claim 7, characterised in that the lever (6) is mounted pivotably on the actuator (4).
  9. Firefighting installation according to claim 2, characterised in that the actuator (4) comprises a piston (43) able to move in a cavity (400) in the body (40), and having an external portion (432) extending out of said cavity (400) and being provided with a ring (434) on which the locking means (60) is intended to act.
  10. Firefighting installation according to claim 9, characterised in that a spring (436) is mounted in the cavity (400) of the body of the actuator so as to push the piston (43) out of the cavity when the yoke (54) is in said second position.
  11. Firefighting installation according to claim 10, characterised in that the piston (43) has a central recess (435) forming a housing for a part of the spring (436) .
  12. Firefighting installation according to claim 10, characterised in that the spring (436) has a first end (4360) cooperating with the piston (43) and a second end (4361), opposite to the first, in abutment on a plate (45) of the body, said plate having a central finger (451) on which the spring (436) is fitted.
  13. Firefighting installation according to claim 2, characterised in that the actuator (4) comprises a piston (43) able to move in a cavity (400) in the body (4), and in that the water inlet pipe (41) communicates with a control channel (22) that controls the master valve (3) for filling the sprinkler system with water, the master valve (3) being closed when the control channel (22) is under pressurised water and open when the control channel (22) is depressurised, the piston (43) being able to move between a position of closing the inlet pipe (41) maintaining the pressure in the control channel (22) and a release position enabling the inlet pipe (41) to be put in communication with the outlet pipe (42).
  14. Firefighting installation according to claim 2, characterised in that the outlet pipe (42) communicates with a water drainage circuit (23).
  15. Firefighting installation according to claim 2, characterised in that the actuator (4) comprises a piston (43) able to move in a cavity (400) in the body (40), the body having a first end through which the piston (43) can move, and a second end opposite to the first, the outlet pipe (42) being provided in the second end, or between the outlet pipe (41) and the second end, the outlet pipe (42) communicating with a circuit at atmospheric pressure.
  16. Firefighting installation according to claim 2, characterised in that the actuator (4) comprises a piston (43) able to move in a cavity (400) in the body (40), a third pipe (44) being provided in the body (40) and being able to be put in communication with the inlet pipe (41) in said second position of the yoke (54), the third pipe (44) communicating with a hydraulic alarm circuit (24).
EP14710002.8A 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator Not-in-force EP2958641B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14710002T PL2958641T3 (en) 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1351519A FR3002154B1 (en) 2013-02-21 2013-02-21 FIRE FIGHTING APPARATUS, INCLUDING A VACUUM SPRINKLERS NETWORK, WHICH CAN BE TRIGGERED BY A PILOT ACTUATOR BY A MASTER ACTUATOR
PCT/FR2014/050285 WO2014128388A2 (en) 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator

Publications (2)

Publication Number Publication Date
EP2958641A2 EP2958641A2 (en) 2015-12-30
EP2958641B1 true EP2958641B1 (en) 2018-03-14

Family

ID=48468537

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14710002.8A Not-in-force EP2958641B1 (en) 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers that can be tripped by an actuator operated by a membrane-master actuator
EP14709997.2A Not-in-force EP2958639B1 (en) 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers which can be tripped by an actuator comprising a piston and being controlled by a master actuator

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP14709997.2A Not-in-force EP2958639B1 (en) 2013-02-21 2014-02-13 Firefighting installation including a network of vacuum sprinklers which can be tripped by an actuator comprising a piston and being controlled by a master actuator

Country Status (8)

Country Link
US (2) US10071272B2 (en)
EP (2) EP2958641B1 (en)
AU (2) AU2014220504B2 (en)
CA (2) CA2899175C (en)
FR (1) FR3002154B1 (en)
PL (2) PL2958641T3 (en)
RU (2) RU2648222C2 (en)
WO (2) WO2014128388A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2973026C (en) 2017-03-09 2018-12-04 Systemes Fireflex Inc. Pressure controller for fire protection system maintained under vacuum, and related method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357133A (en) * 1942-11-02 1944-08-29 Automatic Sprinkler Co Pressure actuated valve
US2699217A (en) * 1952-05-19 1955-01-11 Gerrit K Elmenhorst Sprinkler system
US2865457A (en) * 1957-08-08 1958-12-23 Dale M Jensen Fire extinguishing sprinkler system of dry-pipe type
US2969842A (en) * 1958-12-09 1961-01-31 Automatic Sprinkler Corp Accelerator for dry pipe sprinkler systems
SU142152A1 (en) * 1961-03-24 1961-11-30 И.М. Цудиков Vacuum sprinkler installation
US3685586A (en) * 1971-06-01 1972-08-22 Ato Inc Accelerator for dry pipe sprinkler systems
US3759331A (en) * 1972-04-27 1973-09-18 Factory Mutual Res Corp Fire protection system utilizing dry pipes normally maintained in a vacuum
FR2724323A1 (en) 1994-09-13 1996-03-15 Kadoche Maurice FIRE PROTECTION SYSTEM
US7673695B2 (en) 2006-06-02 2010-03-09 The Reliable Automatic Sprinkler Co., Inc. Dry pipe/deluge valve for automatic sprinkler systems
US7921577B2 (en) * 2006-09-12 2011-04-12 Victaulic Company Method and apparatus for drying sprinkler piping networks
US20090236104A1 (en) 2008-03-18 2009-09-24 Victaulic Company Negative pressure actuator

Also Published As

Publication number Publication date
AU2014220504A1 (en) 2015-08-13
EP2958639A2 (en) 2015-12-30
WO2014128388A2 (en) 2014-08-28
WO2014128384A2 (en) 2014-08-28
EP2958641A2 (en) 2015-12-30
WO2014128388A3 (en) 2014-12-18
CA2899175A1 (en) 2014-08-28
US9770613B2 (en) 2017-09-26
CA2899175C (en) 2020-12-15
RU2648222C2 (en) 2018-03-22
FR3002154A1 (en) 2014-08-22
PL2958641T3 (en) 2018-08-31
RU2015139352A (en) 2017-03-24
FR3002154B1 (en) 2015-12-04
RU2015139353A (en) 2017-03-27
AU2014220578B2 (en) 2017-02-02
WO2014128384A3 (en) 2014-12-18
CA2899162A1 (en) 2014-08-28
PL2958639T3 (en) 2018-08-31
US20160001112A1 (en) 2016-01-07
EP2958639B1 (en) 2018-03-14
AU2014220504B2 (en) 2017-02-16
US10071272B2 (en) 2018-09-11
US20160008643A1 (en) 2016-01-14
AU2014220578A1 (en) 2015-08-13
RU2648348C2 (en) 2018-03-23

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