EP3006092A1 - Fire-protection device of a starter-controller device of an electrical installation - Google Patents

Fire-protection device of a starter-controller device of an electrical installation Download PDF

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Publication number
EP3006092A1
EP3006092A1 EP15189047.2A EP15189047A EP3006092A1 EP 3006092 A1 EP3006092 A1 EP 3006092A1 EP 15189047 A EP15189047 A EP 15189047A EP 3006092 A1 EP3006092 A1 EP 3006092A1
Authority
EP
European Patent Office
Prior art keywords
protection device
starter
fire
temperature
controller device
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.)
Granted
Application number
EP15189047.2A
Other languages
German (de)
French (fr)
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EP3006092B1 (en
Inventor
Grégory Dedina
Bernard Loiacono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
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Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3006092A1 publication Critical patent/EP3006092A1/en
Application granted granted Critical
Publication of EP3006092B1 publication Critical patent/EP3006092B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C3/00Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C35/00Permanently-installed equipment
    • A62C35/02Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/026Permanently-installed equipment with containers for delivering the extinguishing substance the extinguishing material being put under pressure by means other than pressure gas, e.g. pumps
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C35/00Permanently-installed equipment
    • A62C35/02Permanently-installed equipment with containers for delivering the extinguishing substance
    • A62C35/11Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone
    • A62C35/13Permanently-installed equipment with containers for delivering the extinguishing substance controlled by a signal from the danger zone with a finite supply of extinguishing material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02Housings; Casings; Bases; Mountings
    • H01H2071/0292Housing or frames containing grooves or slots for guiding movable parts
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device

Definitions

  • the present invention relates to a fire protection device of a starter-controller device of an electrical installation, the starter-controller device being adapted to be connected to an electric power conductor.
  • the invention lies in the field of fire protection in devices for starting and controlling electrical installations.
  • Such devices for starting and controlling electrical installations comprise electrical power conductors with separable-contact conductors.
  • the electrical conductors are connected at connection terminals.
  • One of the main known causes of fire is the loosening of the connection terminals, which causes a rise in temperature in the starter-controller device at the connection terminals, the energy stored following this rise in temperature can cause a thermal runaway and a fire start.
  • a locally caused fire spreads quickly to the electrical panel of the electrical installation, or even buildings electrically connected by the electrical installation.
  • the document FR2979149 describes a thermal monitoring system of the connection terminals of an electrical connection device.
  • the proposed system allows, in case of detection by the thermal monitoring means of a temperature rise above a predetermined threshold, to cut the connections of the electrical connection device.
  • a simple cut of the electrical connections does not stop the progression of the fire, and therefore such a system does not guarantee sufficient security in case of fire departure already present .
  • the present invention aims to overcome this disadvantage, by providing a protection device that ensures better safety in the event of fire.
  • the invention proposes a device for the fire protection of a starter-controller device of an electrical installation according to claim 1.
  • the device of the invention comprises temperature sensors able to detect a temperature above a predetermined threshold, close to the electric power conductors of the starter-controller device, and allows, thanks to the arrangement of the various elements, a rapid injection of an extinguishing agent towards said electric power conductors.
  • a fire extinguishing agent is released so as to extinguish any fire departure and to prevent the spread of fire at the connected electrical installation.
  • the protective device according to the invention may also have one or more of the features according to the dependent claims 2 to 5.
  • the invention relates to a fire protection system of an electrical installation, comprising a starter-controller device of the electrical installation and a fire protection device as briefly described above, the fire protection device being adapted to be fixed in front position to the starter-controller device.
  • the figure 1 illustrates in semi-perspective a complete system of fire protection 1, comprising a starter-controller device 2 adapted to be connected to an electrical installation via electrical conductors not shown in the figure.
  • a spatial reference (x, y, z) is represented on the figure 1 .
  • the figure 2 illustrates the elements of the figure 1 along the y axis.
  • Such a starter-controller device 2 has a function of protection and control of single-phase or three-phase motors, in particular implementing an overcurrent protection function (or disjunction function) and an isolating and power isolating function.
  • the electrical conductors are each adapted to be connected to the starter-controller device 2 at a respective connection terminal 6a, 6b, 6c.
  • connection terminals are provided for the three-phase phase electrical conductors.
  • connection terminals between 2 and 4 More generally, a number of connection terminals between 2 and 4 is envisaged.
  • the system 1 also comprises a fire protection device 10 adapted to be connected to the starter-controller device 2 and to protect the device 2 against a possible fire departure due to a temperature rise above a predetermined threshold, noted threshold S.
  • the fire protection device 10 is illustrated on the one hand as a separate module on the right side of the figure 1 , and recessed in the front position in the starter-controller device 2.
  • the protective device 10 comprises a housing 12, preferably of substantially parallelepipedal shape, of small width l, substantially equal to the width of the starter-controller device 2, so as to embed it at a location provided in this device, and to low height H, of the order of 20mm.
  • the protective device 10 comprises, on its front face 14 which will be positioned at the front of the starter-controller device 2, a cartridge striker element 16, whose operation in connection with a cartridge 17 containing fire extinguishing agent. , which is not visible on Figures 1 and 2 , will be described later.
  • a light indicator 18, able to indicate the state of the fire protection device is also present on its front face 14.
  • two injection elements 20a, 20b which are hollow, for example tubular, allow the injection of a fire extinguishing agent. to the electrical power conductors of the starter-controller device.
  • the injection elements 20a, 20b are located in the spatial proximity of the cartridge 17 containing the extinguishing agent, allowing rapid release. from this extinguishing agent to the electrical power conductors of the starter-controller device 2.
  • the extinguishing agent used is, for example, a gas, for example CO 2 , or a foam.
  • a gas for example CO 2
  • a foam in general, any type of fluid or gaseous extinguishing agent of electrical origin is usable.
  • the protection device 10 is adapted to be embedded in the starter-controller device 2, and the elements 20a, 20b for injecting a fire extinguishing agent are intended to be positioned in the housings 22a, 22b of the starter-controller device 2.
  • the protective device 10 also has on its rear surface 14 'temperature sensors 24a, 24b, which are positioned, when the protection device 10 is embedded in the starter-controller device 2, in hollow locations 26a, 26b, level of electrical power conductors.
  • the temperature sensors 24a, 24b are located near the injection elements 20a, 20b, at the level of the electrical power conductors, and have a portion protruding on the rear face 14 'of the protection device 10.
  • the temperature sensors 24a, 24b are able to measure the temperature as close as possible to the electric power conductors, so as to allow a rapid triggering as soon as the temperature at the level of the electrical power conductors exceeds a predetermined threshold value and the injection elements 20a, 20b are able to inject the extinguishing agent directly at the electrical power conductors where the over-temperature has been detected.
  • the temperature sensors 24a, 24b are electrically connected to the striker element 16, so as to allow its triggering and the release of the extinguishing agent, as soon as the temperature exceeds a predetermined temperature threshold S.
  • the temperature threshold S is 110 ° C.
  • the housing 12 of the protection device 10 comprises at least one mechanical connecting member 28 which is capable of making a mechanical connection, via a connection interface 30 of the starter-controller device 2, for controlling a lock mechanism allowing the opening and closing the electrical connection of the electrical power conductors in their respective connection terminals.
  • the mechanical connecting element 28 is movable in the slot 31 of the starter-controller device, and is brought, according to an operation which will be described below, to be positioned in three distinct positions corresponding to ON, OFF and TRIP positions, respectively on, stop and safety trigger.
  • a change of position of the mechanical connecting element 28 from a position corresponding to an electrical connection to a position corresponding to an electrical disconnection makes it possible to modify the position of the connection control member 32 / disconnection (on / off) of the starter-controller device 2.
  • This mechanical connecting element 28 is also an electrical connection control element.
  • the protection device 10 allows, via the mechanical connection element 28, to maintain a locked disconnection position (TRIP position) following the detection of a fire departure.
  • the figure 3 illustrates in section a protection device 10 according to one embodiment of the invention.
  • the protection device 10 comprises, in addition to the elements already described above, a locking spring 40 and a locking piston 42, a trigger element 44, a trigger spring 46 and a reset lever 48.
  • the rearming lever is accessible via a side wall of the housing 12, by a slot 49 pierced in this paroilateral.
  • the cartridge striker 16 is triggered and pierces the cartridge 17, resulting in the release of the extinguishing agent. towards the injection elements 20a, 20b.
  • the cartridge 17 is positioned substantially facing the injection elements 20a, 20b, with great spatial proximity, preferably of the order of 15mm.
  • the reactivity of the fire protection system set up by the fire protection device 10 is very great.
  • the extinguishing agent foam or gas, also fills the hollow spaces 50 of the protection device, which causes a displacement of the locking piston 42 along the z axis.
  • the trigger element 44 is released and rotated along the axis z under the action of the trigger spring 46.
  • the displacement of the trigger element 44 modifies the position of the mechanical connecting element 28, in translation along the x axis, and the position of the reset lever 48.
  • the protection device 10 further comprises a light pipe 51, the color of which is modified as a function of the position of the trigger element 44 and which indicates, by its end 18 visible on the front face 14 of the housing 12 of the protective device 10 the state of the safety device.
  • the end 18 of the light pipe 51 forms a light indicator of the state of the protection device 10.
  • the locking piston 42 In operation mode before triggering, the locking piston 42 is in a first rest position, and the locking spring 40 is compressed.
  • the trigger element 44 is in the up position, held by the trigger spring 46.
  • the link element is in position f.
  • the reset lever 48 is in a first position P1, which is a low position, as illustrated in FIG. figure 5 .
  • the locking piston 42 moves along the z-axis, under the effect of the locking spring 40, actuated by the extinguishing agent released.
  • the displacement of the locking piston 42 causes the displacement of the trigger element 44, which moves from position f or g to position h.
  • the position of the mechanical interface 30 is modified by the change of position of the connecting element 28 for electrical connection control of the fire-fighting device, and the control member 32 (on / off) of the starter-controller device 2 is locked in the OFF position (see figure 8 operating state Ef), therefore in the disconnected position of the electric power conductors.
  • the light pipe 51 and the light indicator 18 indicate, by a color change, a tripping of the security system.
  • the protection device 10 the power conductors are open and the reset is locked. Manual reset is possible later.
  • the protection device 10 can operate several times after resetting, and after changing the cartridge 17 containing a extinguishing agent, it is not limited to a single use.
  • the fire protection device makes it possible to act for the rapid extinction of a possible fire departure at the connection terminals or the electrical power conductors of a starter-controller device. an electrical installation, while ensuring electrical disconnection and holding in the disconnected position.

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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)
  • Thermally Actuated Switches (AREA)

Abstract

L'invention concerne un dispositif de protection anti-incendie (10) d'un dispositif démarreur-contrôleur (2) d'une installation électrique, le dispositif démarreur-contrôleur (2) étant apte à être connecté à un conducteur de puissance électrique et comprenant des moyens de surveillance thermique du ou des conducteurs de puissance électrique aptes à détecter une élévation de température, supérieure à un seuil prédéterminé. Ce dispositif de protection anti-incendie est adapté à être fixé mécaniquement au dispositif démarreur-contrôleur (2) via au moins un organe de liaison mécanique (28,30), lesdits moyens de surveillance thermique comprenant au moins un capteur de température (24a, 24b), comportant une portion en saillie sur une face du dispositif de protection, apte à capter une température au niveau des conducteurs de puissance du dispositif démarreur-contrôleur (2). Il comprend en outre une cartouche comprenant un agent d'extinction d'incendie et au moins un élément d'injection (20a, 20b), situé sur la même face du dispositif de protection que le ou les capteurs de température (24a, 24b), ladite cartouche étant située à l'intérieur du dispositif de protection (10), connectée auxdits capteurs de température (24a, 24b), l'élément d'injection (20a, 20b) étant apte à injecter l'agent d'extinction d'incendie vers les conducteurs de puissance électrique suite à une détection, par le capteur de température (24a, 24b), d'une température supérieure au seuil prédéterminé.The invention relates to a fire protection device (10) for a starter-controller device (2) of an electrical installation, the starter-controller device (2) being able to be connected to an electrical power conductor and comprising means for thermal monitoring of the electric power conductor (s) capable of detecting a rise in temperature, greater than a predetermined threshold. This fire protection device is adapted to be mechanically fixed to the starter-controller device (2) via at least one mechanical connecting member (28, 30), said thermal monitoring means comprising at least one temperature sensor (24a, 24b), having a portion protruding from one side of the protection device, capable of sensing a temperature at the power conductors of the starter-controller device (2). It further comprises a cartridge comprising a fire extinguishing agent and at least one injection element (20a, 20b), located on the same face of the protection device as the temperature sensor or sensors (24a, 24b). , said cartridge being located inside the protection device (10), connected to said temperature sensors (24a, 24b), the injection element (20a, 20b) being able to inject the extinguishing agent fire towards the electrical power conductors following detection by the temperature sensor (24a, 24b) of a temperature above the predetermined threshold.

Description

La présente invention concerne un dispositif de protection anti-incendie d'un dispositif démarreur-contrôleur d'une installation électrique, le dispositif démarreur-contrôleur étant apte à être connectée à un conducteur de puissance électrique.The present invention relates to a fire protection device of a starter-controller device of an electrical installation, the starter-controller device being adapted to be connected to an electric power conductor.

Elle concerne également un système de protection anti-incendie associé.It also relates to an associated fire protection system.

L'invention se situe dans le domaine de la protection contre les incendies dans les dispositifs de démarrage et de contrôle d'installations électriques.The invention lies in the field of fire protection in devices for starting and controlling electrical installations.

De tels dispositifs de démarrage et de contrôle d'installations électriques comprennent des conducteurs électriques de puissance dotés de conducteurs à contacts séparables. Les conducteurs électriques sont connectés au niveau de bornes de raccordement. Une des principales causes d'incendie connues est le desserrage des bornes de raccordement, qui provoque une montée en température dans le dispositif démarreur-contrôleur au niveau des bornes de raccordement, l'énergie emmagasinée suite à cette élévation de température pouvant provoquer un emballement thermique et un démarrage d'incendie. Un incendie provoqué localement se propage rapidement au niveau du tableau électrique de l'installation électrique, voire des bâtiments reliés électriquement par l'installation électrique.Such devices for starting and controlling electrical installations comprise electrical power conductors with separable-contact conductors. The electrical conductors are connected at connection terminals. One of the main known causes of fire is the loosening of the connection terminals, which causes a rise in temperature in the starter-controller device at the connection terminals, the energy stored following this rise in temperature can cause a thermal runaway and a fire start. A locally caused fire spreads quickly to the electrical panel of the electrical installation, or even buildings electrically connected by the electrical installation.

Il est connu de surveiller une montée en température au niveau de bornes de raccordement par des moyens de surveillance thermique.It is known to monitor a rise in temperature at connection terminals by thermal monitoring means.

Le document FR2979149 décrit un système de surveillance thermique des bornes de raccordement d'un dispositif de connexion électrique. Le système proposé permet, en cas de détection par les moyens de surveillance thermique d'une élévation de température supérieure à un seuil prédéterminé, de couper les connexions du dispositif de connexion électrique. Cependant, dans le cas d'un départ d'incendie, une simple coupure des connexions électriques ne permet pas d'arrêter la progression du feu, et donc un tel système ne garantit pas une sécurité suffisante en cas de départ d'incendie déjà présent.The document FR2979149 describes a thermal monitoring system of the connection terminals of an electrical connection device. The proposed system allows, in case of detection by the thermal monitoring means of a temperature rise above a predetermined threshold, to cut the connections of the electrical connection device. However, in the case of a fire, a simple cut of the electrical connections does not stop the progression of the fire, and therefore such a system does not guarantee sufficient security in case of fire departure already present .

La présente invention a pour objectif de remédier à cet inconvénient, en proposant un dispositif de protection qui permet d'assurer une meilleure sécurité en cas de départ d'incendie.The present invention aims to overcome this disadvantage, by providing a protection device that ensures better safety in the event of fire.

A cet effet, l'invention propose un dispositif de protection anti-incendie d'un dispositif démarreur-contrôleur d'une installation électrique selon la revendication 1.For this purpose, the invention proposes a device for the fire protection of a starter-controller device of an electrical installation according to claim 1.

Avantageusement, le dispositif de l'invention comporte des capteurs de température aptes à détecter une température supérieure à un seuil prédéterminé, à proximité des conducteurs de puissance électrique du dispositif démarreur-contrôleur, et permet, grâce à l'agencement des divers éléments, une injection rapide d'un agent d'extinction vers lesdits conducteurs de puissance électrique.Advantageously, the device of the invention comprises temperature sensors able to detect a temperature above a predetermined threshold, close to the electric power conductors of the starter-controller device, and allows, thanks to the arrangement of the various elements, a rapid injection of an extinguishing agent towards said electric power conductors.

Ainsi, lorsqu'une température supérieure au seuil prédéterminé est détectée, un agent d'extinction d'incendie est libéré de manière à éteindre tout départ d'incendie et d'éviter la propagation de feu au niveau de l'installation électrique connectée.Thus, when a temperature above the predetermined threshold is detected, a fire extinguishing agent is released so as to extinguish any fire departure and to prevent the spread of fire at the connected electrical installation.

Le dispositif de protection selon l'invention peut également présenter une ou plusieurs des caractéristiques selon les revendications dépendantes 2 à 5.The protective device according to the invention may also have one or more of the features according to the dependent claims 2 to 5.

Selon un deuxième aspect, l'invention concerne un système de protection anti-incendie d'une installation électrique, comprenant un dispositif démarreur-contrôleur de l'installation électrique et un dispositif de protection anti-incendie tel que brièvement décrit ci-dessus, le dispositif de protection anti-incendie étant apte à être fixé en position frontale au dispositif démarreur-contrôleur.According to a second aspect, the invention relates to a fire protection system of an electrical installation, comprising a starter-controller device of the electrical installation and a fire protection device as briefly described above, the fire protection device being adapted to be fixed in front position to the starter-controller device.

D'autres caractéristiques et avantages de l'invention ressortiront de la description qui en est donnée ci-dessous, à titre indicatif et nullement limitatif, en référence aux figures annexées, parmi lesquelles :

  • la figure 1 représente une vue éclatée en perspective d'un système de protection anti-incendie selon un mode de réalisation de l'invention ;
  • la figure 2 représente une vue du système de protection de la figure 1, comprenant une vue du fond du dispositif de protection ;
  • la figure 3 représente en détail un dispositif de protection anti-incendie selon un mode de réalisation de l'invention ;
  • la figure 4 est une vue en coupe transversale du dispositif de protection anti-incendie dans un premier mode de fonctionnement ;
  • la figure 5 est une vue de côté du dispositif de protection anti-incendie dans le premier mode de fonctionnement ;
  • la figure 6 est une vue de côté du dispositif de protection anti-incendie dans un deuxième mode de fonctionnement ;
  • la figure 7 est une vue en coupe transversale du dispositif de protection anti-incendie dans le deuxième de fonctionnement ;
  • la figure 8 illustre le fonctionnement du dispositif démarreur-contrôleur sous l'action du dispositif de protection anti-incendie dans deux états différents.
Other features and advantages of the invention will emerge from the description given below, by way of indication and in no way limiting, with reference to the appended figures, among which:
  • the figure 1 is an exploded perspective view of a fire protection system according to one embodiment of the invention;
  • the figure 2 represents a view of the protection system of the figure 1 , comprising a bottom view of the protection device;
  • the figure 3 shows in detail a fire protection device according to one embodiment of the invention;
  • the figure 4 is a cross-sectional view of the fire protection device in a first mode of operation;
  • the figure 5 is a side view of the fire protection device in the first mode of operation;
  • the figure 6 is a side view of the fire protection device in a second mode of operation;
  • the figure 7 is a cross-sectional view of the fire protection device in the second operating mode;
  • the figure 8 illustrates the operation of the starter-controller device under the action of the fire protection device in two different states.

Dans la description qui suit, les mêmes références indiquées sur différentes figures représentent les mêmes éléments.In the following description, the same references indicated in different figures represent the same elements.

La figure 1 illustre en semi-perspective un système complet de protection anti-incendie 1, comprenant un dispositif démarreur-contrôleur 2 apte à être connecté à une installation électrique via des conducteurs électriques non représentés sur la figure.The figure 1 illustrates in semi-perspective a complete system of fire protection 1, comprising a starter-controller device 2 adapted to be connected to an electrical installation via electrical conductors not shown in the figure.

Un repère spatial (x,y,z) est représenté sur la figure 1.A spatial reference (x, y, z) is represented on the figure 1 .

La figure 2 illustre les éléments de la figure 1 selon l'axe y.The figure 2 illustrates the elements of the figure 1 along the y axis.

Un tel dispositif démarreur-contrôleur 2 a une fonction de protection et de commande de moteurs monophasés ou triphasés, implémentant notamment une fonction de protection contre les surintensités (ou fonction de disjonction) et une fonction d'isolement et de sectionnement de puissance.Such a starter-controller device 2 has a function of protection and control of single-phase or three-phase motors, in particular implementing an overcurrent protection function (or disjunction function) and an isolating and power isolating function.

Les conducteurs électriques sont aptes chacun à être raccordé au dispositif démarreur-contrôleur 2 au niveau d'une borne de raccordement respective 6a, 6b, 6c.The electrical conductors are each adapted to be connected to the starter-controller device 2 at a respective connection terminal 6a, 6b, 6c.

Dans l'exemple, trois bornes de raccordement sont prévues pour les conducteurs électriques de phase de courant triphasé.In the example, three connection terminals are provided for the three-phase phase electrical conductors.

De manière plus générale, un nombre de bornes de raccordement compris entre 2 et 4 est envisagé.More generally, a number of connection terminals between 2 and 4 is envisaged.

Le système 1 comprend également un dispositif de protection anti-incendie 10 apte à être raccordé au dispositif démarreur-contrôleur 2 et à protéger ce dispositif 2 contre un éventuel départ d'incendie dû à une élévation de température supérieure à un seuil prédéterminé, noté seuil S.The system 1 also comprises a fire protection device 10 adapted to be connected to the starter-controller device 2 and to protect the device 2 against a possible fire departure due to a temperature rise above a predetermined threshold, noted threshold S.

Le dispositif de protection anti-incendie 10 est illustré d'une part en tant que module séparé sur la partie droite de la figure 1, et encastré en position frontale dans le dispositif démarreur-contrôleur 2.The fire protection device 10 is illustrated on the one hand as a separate module on the right side of the figure 1 , and recessed in the front position in the starter-controller device 2.

Le dispositif de protection 10 comporte un boîtier 12, de préférence de forme sensiblement parallélépipédique, de faible largeur ℓ, sensiblement égale à la largeur du dispositif démarreur-contrôleur 2, de manière à l'encastrer à un emplacement prévu dans ce dispositif, et de faible hauteur H, de l'ordre de 20mm.The protective device 10 comprises a housing 12, preferably of substantially parallelepipedal shape, of small width ℓ, substantially equal to the width of the starter-controller device 2, so as to embed it at a location provided in this device, and to low height H, of the order of 20mm.

Le dispositif de protection 10 comporte, sur sa face avant 14 qui sera positionnée à l'avant du dispositif démarreur-contrôleur 2, un élément 16 percuteur de cartouche, dont le fonctionnement en lien avec une cartouche 17 contenant agent d'extinction d'incendie, qui n'est pas visible sur les figures 1 et 2, sera décrit ultérieurement.The protective device 10 comprises, on its front face 14 which will be positioned at the front of the starter-controller device 2, a cartridge striker element 16, whose operation in connection with a cartridge 17 containing fire extinguishing agent. , which is not visible on Figures 1 and 2 , will be described later.

Un indicateur lumineux 18, apte à indiquer l'état du dispositif de protection anti-incendie est également présent sur sa face avant 14.A light indicator 18, able to indicate the state of the fire protection device is also present on its front face 14.

Sur la face arrière 14' du dispositif de protection 10, opposée à la face avant 14, deux éléments d'injection 20a, 20b, qui sont creux, par exemple tubulaires, permettent l'injection d'un agent d'extinction d'incendie vers les conducteurs de puissance électrique du dispositif démarreur-contrôleur.On the rear face 14 'of the protection device 10, opposite to the front face 14, two injection elements 20a, 20b, which are hollow, for example tubular, allow the injection of a fire extinguishing agent. to the electrical power conductors of the starter-controller device.

Avantageusement, les éléments d'injection 20a, 20b sont situés à proximité spatiale de la cartouche 17 contenant l'agent d'extinction, permettant une libération rapide de cet agent d'extinction vers les conducteurs de puissance électrique du dispositif démarreur-contrôleur 2.Advantageously, the injection elements 20a, 20b are located in the spatial proximity of the cartridge 17 containing the extinguishing agent, allowing rapid release. from this extinguishing agent to the electrical power conductors of the starter-controller device 2.

L'agent d'extinction utilisé est par exemple un gaz, par exemple du CO2, ou une mousse. De manière générale, tout type d'agent fluide ou gazeux d'extinction d'incendie d'origine électrique est utilisable.The extinguishing agent used is, for example, a gas, for example CO 2 , or a foam. In general, any type of fluid or gaseous extinguishing agent of electrical origin is usable.

Comme illustré sur les figures 1 et 2, le dispositif de protection 10 est apte à être encastré dans le dispositif démarreur-contrôleur 2, et les éléments 20a, 20b d'injection d'un agent d'extinction d'incendie sont destinés à se positionner dans des logements 22a, 22b du dispositif démarreur-contrôleur 2.As illustrated on Figures 1 and 2 , the protection device 10 is adapted to be embedded in the starter-controller device 2, and the elements 20a, 20b for injecting a fire extinguishing agent are intended to be positioned in the housings 22a, 22b of the starter-controller device 2.

Le dispositif de protection 10 comporte également sur sa face arrière 14' des capteurs de température 24a, 24b, qui sont positionnés, lorsque le dispositif de protection 10 est encastré dans le dispositif démarreur-contrôleur 2, dans des emplacements creux 26a, 26b, au niveau des conducteurs de puissance électrique.The protective device 10 also has on its rear surface 14 'temperature sensors 24a, 24b, which are positioned, when the protection device 10 is embedded in the starter-controller device 2, in hollow locations 26a, 26b, level of electrical power conductors.

Avantageusement, les capteurs de température 24a, 24b sont situés à proximité des éléments d'injection 20a, 20b, au niveau des conducteurs de puissance électrique, et comportent une portion en saillie sur la face arrière 14' du dispositif de protection 10.Advantageously, the temperature sensors 24a, 24b are located near the injection elements 20a, 20b, at the level of the electrical power conductors, and have a portion protruding on the rear face 14 'of the protection device 10.

Ainsi, les capteurs de température 24a, 24b sont aptes à mesurer la température au plus près des conducteurs de puissance électrique, de manière à permettre un déclenchement rapide dès que la température au niveau des conducteurs de puissance électrique dépasse une valeur de seuil prédéterminée et les éléments d'injection 20a, 20b sont aptes à injecter l'agent d'extinction directement au niveau des conducteurs de puissance électrique où la sur-température a été détectée.Thus, the temperature sensors 24a, 24b are able to measure the temperature as close as possible to the electric power conductors, so as to allow a rapid triggering as soon as the temperature at the level of the electrical power conductors exceeds a predetermined threshold value and the injection elements 20a, 20b are able to inject the extinguishing agent directly at the electrical power conductors where the over-temperature has been detected.

Les capteurs de température 24a, 24b sont liés électriquement à l'élément percuteur 16, de manière à permettre son déclenchement et la libération de l'agent d'extinction d'incendie, dès que la température dépasse un seuil de température S prédéterminé.The temperature sensors 24a, 24b are electrically connected to the striker element 16, so as to allow its triggering and the release of the extinguishing agent, as soon as the temperature exceeds a predetermined temperature threshold S.

De préférence, le seuil de température S est de 110°C.Preferably, the temperature threshold S is 110 ° C.

Le boîtier 12 du dispositif de protection 10 comprend au moins un organe de liaison mécanique 28 qui est apte à réaliser une liaison mécanique, via une interface de liaison 30 du dispositif démarreur-contrôleur 2, permettant de contrôler un mécanisme de serrure permettant l'ouverture et la fermeture de la connexion électrique des conducteurs de puissance électrique dans leurs bornes de raccordement respectives.The housing 12 of the protection device 10 comprises at least one mechanical connecting member 28 which is capable of making a mechanical connection, via a connection interface 30 of the starter-controller device 2, for controlling a lock mechanism allowing the opening and closing the electrical connection of the electrical power conductors in their respective connection terminals.

L'élément de liaison mécanique 28 est mobile dans la fente 31 du dispositif démarreur-contrôleur, et est amené, selon un fonctionnement qui sera décrit ci-après, à se positionner selon trois positions distinctes correspondant à des positions ON, OFF et TRIP, respectivement marche, arrêt et déclenchement de sécurité.The mechanical connecting element 28 is movable in the slot 31 of the starter-controller device, and is brought, according to an operation which will be described below, to be positioned in three distinct positions corresponding to ON, OFF and TRIP positions, respectively on, stop and safety trigger.

Dans le système 1 proposé, un changement de position de l'élément de liaison mécanique 28, d'une position correspondant à une connexion électrique vers une position correspondant à une déconnexion électrique permet de modifier la position de l'organe de commande 32 de connexion/déconnexion (on/off) du dispositif démarreur-contrôleur 2.In the proposed system 1, a change of position of the mechanical connecting element 28 from a position corresponding to an electrical connection to a position corresponding to an electrical disconnection makes it possible to modify the position of the connection control member 32 / disconnection (on / off) of the starter-controller device 2.

Ainsi, un changement de position de l'élément de liaison mécanique 28 permet de changer l'état de connexion électrique des conducteurs. Cet élément de liaison mécanique 28 est également un élément de contrôle de connexion électrique.Thus, a change of position of the mechanical connecting element 28 makes it possible to change the state of electrical connection of the conductors. This mechanical connecting element 28 is also an electrical connection control element.

De plus, le dispositif de protection 10 permet, via l'élément de liaison mécanique 28, de maintenir une position de déconnexion verrouillée (position TRIP) suite à la détection d'un départ d'incendie.In addition, the protection device 10 allows, via the mechanical connection element 28, to maintain a locked disconnection position (TRIP position) following the detection of a fire departure.

La figure 3 illustre en coupe un dispositif de protection 10 selon un mode de réalisation de l'invention.The figure 3 illustrates in section a protection device 10 according to one embodiment of the invention.

Le dispositif de protection 10 comporte, outre les éléments déjà décrits ci-dessus, un ressort de verrouillage 40 et un piston de verrouillage 42, un élément déclencheur 44, un ressort déclencheur 46 ainsi qu'un levier de réarmement 48. Le levier de réarmement est accessible via une paroi latérale du boîtier 12, par une fente 49 percée dans cette paroilatérale.The protection device 10 comprises, in addition to the elements already described above, a locking spring 40 and a locking piston 42, a trigger element 44, a trigger spring 46 and a reset lever 48. The rearming lever is accessible via a side wall of the housing 12, by a slot 49 pierced in this paroilateral.

Lorsque les capteurs 24a, 24b détectent une élévation de la température au niveau des conducteurs de puissance supérieure au seuil de température prédéterminé, le percuteur de cartouche 16 se déclenche et perce la cartouche 17, ce qui entraîne la libération de l'agent d'extinction, vers les éléments d'injection 20a, 20b.When the sensors 24a, 24b detect a rise in the temperature at the power conductors greater than the predetermined temperature threshold, the cartridge striker 16 is triggered and pierces the cartridge 17, resulting in the release of the extinguishing agent. towards the injection elements 20a, 20b.

Avantageusement, la cartouche 17 est positionnée sensiblement en regard des éléments d'injection 20a, 20b, à grande proximité spatiale, de préférence de l'ordre de 15mm.Advantageously, the cartridge 17 is positioned substantially facing the injection elements 20a, 20b, with great spatial proximity, preferably of the order of 15mm.

Ainsi, suite à la libération de l'agent d'extinction par percussion de la cartouche 17, cet agent d'extinction est quasi immédiatement acheminé au niveau des conducteurs de puissance électrique du dispositif démarreur-contrôleur 2.Thus, following the release of the extinguishing agent by percussion of the cartridge 17, this extinguishing agent is almost immediately conveyed to the electric power conductors of the starter-controller device 2.

La réactivité du système de protection anti-incendie mise en place par le dispositif de protection anti-incendie 10 est très grande.The reactivity of the fire protection system set up by the fire protection device 10 is very great.

L'agent d'extinction, mousse ou gaz, remplit également les espaces creux 50 du dispositif de protection, ce qui provoque un déplacement du piston de verrouillage 42 suivant l'axe z.The extinguishing agent, foam or gas, also fills the hollow spaces 50 of the protection device, which causes a displacement of the locking piston 42 along the z axis.

Suite à ce déplacement, l'élément déclencheur 44 est libéré et entraîné en rotation selon l'axe z, sous l'action du ressort déclencheur 46.Following this movement, the trigger element 44 is released and rotated along the axis z under the action of the trigger spring 46.

Le déplacement de l'élément déclencheur 44 modifie la position de l'élément de liaison mécanique 28, en translation selon l'axe x, et ainsi que la position du levier de réarmement 48.The displacement of the trigger element 44 modifies the position of the mechanical connecting element 28, in translation along the x axis, and the position of the reset lever 48.

Le dispositif de protection 10 comprend en outre un conduit lumineux 51, dont la couleur est modifiée en fonction de la position de l'élément déclencheur 44 et qui indique, par son extrémité 18 visible sur la face avant 14 du boîtier 12 du dispositif de protection 10 l'état du dispositif de sécurité. Ainsi, l'extrémité 18 du conduit lumineux 51, forme un indicateur lumineux de l'état du dispositif de protection 10.The protection device 10 further comprises a light pipe 51, the color of which is modified as a function of the position of the trigger element 44 and which indicates, by its end 18 visible on the front face 14 of the housing 12 of the protective device 10 the state of the safety device. Thus, the end 18 of the light pipe 51 forms a light indicator of the state of the protection device 10.

Par exemple, la couleur noire indique un fonctionnement normal et la couleur rouge un déclenchement du mécanisme de protection suite à la détection d'une température supérieure au seuil de température.

  • Les figures 4 à 8 montrent plus en détail le fonctionnement du dispositif de protection 10.
  • Les figures 4 et 7 illustrent, en vue de côté, le mécanisme de protection du dispositif de protection anti-incendie selon deux modes de fonctionnement.
  • Les figures 5 et 6 sont des vues latérales du dispositif de protection 10, permettant de montrer la fente 49 et la position du levier de réarmement 48 correspondante.
  • La figure 8 illustre le dispositif démarreur contrôleur selon le plan x-z, et la position de l'interface de liaison 30, réceptrice de l'élément de liaison mécanique 28, dans la fente 31 suivant l'état avant déclenchement (état Ei), après déclenchement (état Ef) du mécanisme de protection du dispositif de protection 10.
  • La figure 4 illustre le fonctionnement du dispositif de protection 10 lorsque les températures captées sont inférieures au seuil de température, donc le mode de fonctionnement est normal.
For example, the black color indicates normal operation and the red color triggers the protection mechanism following detection of a temperature above the temperature threshold.
  • The Figures 4 to 8 show in more detail the operation of the protection device 10.
  • The Figures 4 and 7 illustrate, in side view, the protection mechanism of the fire protection device according to two modes of operation.
  • The Figures 5 and 6 are side views of the protection device 10, to show the slot 49 and the position of the reset lever 48 corresponding.
  • The figure 8 illustrates the controller starter device according to the xz plane, and the position of the link interface 30, receiving the mechanical link element 28, in the slot 31 according to the state before triggering (state Ei), after triggering (state Ef) of the protection mechanism of the protection device 10.
  • The figure 4 illustrates the operation of the protection device 10 when the sensed temperatures are below the temperature threshold, so the operating mode is normal.

Trois positions de l'élément de liaison 28, qui est l'extrémité de l'élément déclencheur 44, sont illustrées, notées f, g et h est correspondant respectivement aux positions ON, OFF et TRIP du mécanisme de serrure.Three positions of the connecting element 28, which is the end of the trigger element 44, are illustrated, denoted f, g and h is respectively corresponding to the ON, OFF and TRIP positions of the lock mechanism.

En mode de fonctionnement avant déclenchement, le piston de verrouillage 42 est dans une première position de repos, et le ressort de verrouillage 40 est compressé. L'élément déclencheur 44 est en position haute, maintenu par le ressort déclencheur 46. L'élément de liaison est en position f.In operation mode before triggering, the locking piston 42 is in a first rest position, and the locking spring 40 is compressed. The trigger element 44 is in the up position, held by the trigger spring 46. The link element is in position f.

Le levier de réarmement 48 est dans une première position P1, qui est une position basse, comme illustré à la figure 5.The reset lever 48 is in a first position P1, which is a low position, as illustrated in FIG. figure 5 .

Lorsqu'une augmentation de température au-delà du seuil de température prédéterminé est détectée, le piston de verrouillage 42 se déplace suivant l'axe z, sous l'effet du ressort de verrouillage 40, actionné par l'agent d'extinction libéré.When a temperature increase above the predetermined temperature threshold is detected, the locking piston 42 moves along the z-axis, under the effect of the locking spring 40, actuated by the extinguishing agent released.

Le déplacement du piston de verrouillage 42 entraîne le déplacement de l'élément déclencheur 44, qui passe de position f ou g en position h.The displacement of the locking piston 42 causes the displacement of the trigger element 44, which moves from position f or g to position h.

En parallèle, le levier de réarmement 48 passe en position P2, telle qu'illustrée à la figure 6.In parallel, the reset lever 48 moves to position P2, as illustrated in FIG. figure 6 .

La position de l'interface mécanique 30 est modifiée par le changement de position de l'élément de liaison 28 de contrôle de connexion électrique du dispositif anti-incendie, et l'organe de commande 32 (on/off) du dispositif démarreur-contrôleur 2 est verrouillé en position OFF (voir figure 8, état de fonctionnement Ef), donc en position de déconnexion des conducteurs de puissance électrique.The position of the mechanical interface 30 is modified by the change of position of the connecting element 28 for electrical connection control of the fire-fighting device, and the control member 32 (on / off) of the starter-controller device 2 is locked in the OFF position (see figure 8 operating state Ef), therefore in the disconnected position of the electric power conductors.

En parallèle, le conduit lumineux 51 et l'indicateur lumineux 18 indiquent, par un changement de couleur, un déclenchement du système de sécurité.In parallel, the light pipe 51 and the light indicator 18 indicate, by a color change, a tripping of the security system.

Ainsi, grâce au dispositif de protection 10, les conducteurs puissance sont ouverts et le réarmement est verrouillé. Un réarmement manuel est possible par la suite.Thus, thanks to the protection device 10, the power conductors are open and the reset is locked. Manual reset is possible later.

Avantageusement, le dispositif de protection 10 peut fonctionner à plusieurs reprises après réarmement, et après changement de la cartouche 17 contenant un agent d'extinction, il n'est pas limité à une seule utilisation.Advantageously, the protection device 10 can operate several times after resetting, and after changing the cartridge 17 containing a extinguishing agent, it is not limited to a single use.

Avantageusement, le dispositif de protection anti-incendie selon l'invention permet d'agir pour l'extinction rapide d'un départ éventuel de feu au niveau des bornes de raccordement ou des conducteurs de puissance électrique d'un dispositif démarreur-contrôleur d'une installation électrique, tout en assurant une déconnexion électrique et un maintien en position déconnectée.Advantageously, the fire protection device according to the invention makes it possible to act for the rapid extinction of a possible fire departure at the connection terminals or the electrical power conductors of a starter-controller device. an electrical installation, while ensuring electrical disconnection and holding in the disconnected position.

Claims (6)

Dispositif de protection anti-incendie (10) d'un dispositif démarreur-contrôleur (2) d'une installation électrique, le dispositif démarreur-contrôleur (2) étant apte à être connecté à au moins un conducteur de puissance électrique, le dispositif de protection (10) comprenant des moyens de surveillance thermique du ou des conducteurs de puissance électrique aptes à détecter une élévation de température, supérieure à un seuil prédéterminé,
caractérisé en ce qu'il est adapté à être fixé mécaniquement au dispositif démarreur-contrôleur (2) via au moins un organe de liaison mécanique (28,30),
en ce que lesdits moyens de surveillance thermique comprennent au moins un capteur de température (24a, 24b), comportant une portion en saillie sur une face du dispositif de protection, apte à capter une température au niveau des conducteurs de puissance électrique du dispositif démarreur-contrôleur (2),
et en ce qu'il comprend une cartouche (17) comprenant un agent d'extinction d'incendie et au moins un élément d'injection (20a, 20b), situé sur la même face du dispositif de protection que le ou les capteurs de température (24a, 24b), ladite cartouche étant située à l'intérieur du dispositif de protection (10), connectée auxdits capteurs de température (24a, 24b),
l'élément d'injection (20a, 20b) étant apte à injecter l'agent d'extinction d'incendie vers les conducteurs de puissance électrique suite à une détection, par le capteur de température (24a, 24b), d'une température supérieure au seuil prédéterminé,
le dispositif comportant en outre un piston de verrouillage (42), lié à un ressort de verrouillage (40), apte à être mis en mouvement lors de la libération de l'agent d'extinction d'incendie, et un élément déclencheur (44) apte à âtre déplacé selon un axe prédéterminé par déplacement du piston de verrouillage, et apte à entraîner un changement de position d'un élément de liaison mécanique (28,30) entre le dispositif de protection (10) et le dispositif démarreur contrôleur (2).
Fire protection device (10) of a starter-controller device (2) of an electrical installation, the starter-controller device (2) being adapted to be connected to at least one electrical power conductor, the device for protection device (10) comprising means for thermal monitoring of the electric power conductor (s) capable of detecting a temperature rise, greater than a predetermined threshold,
characterized in that it is adapted to be mechanically fixed to the starter-controller device (2) via at least one mechanical connecting member (28, 30),
in that said thermal monitoring means comprise at least one temperature sensor (24a, 24b), comprising a portion protruding on one side of the protection device, capable of sensing a temperature at the electrical power conductors of the starter device. controller (2),
and in that it comprises a cartridge (17) comprising a fire-extinguishing agent and at least one injection element (20a, 20b), located on the same face of the protection device as the one or more sensors of temperature (24a, 24b), said cartridge being located inside the protection device (10), connected to said temperature sensors (24a, 24b),
the injection element (20a, 20b) being able to inject the extinguishing agent towards the electric power conductors following detection, by the temperature sensor (24a, 24b), of a temperature greater than the predetermined threshold,
the device further comprising a locking piston (42), connected to a locking spring (40), capable of being set in motion upon release of the fire extinguishing agent, and a trigger element (44); ) adapted to be displaced by a predetermined axis by displacement of the locking piston, and adapted to cause a change of position of a mechanical connecting element (28,30) between the protection device (10) and the starter controller device ( 2).
Dispositif de protection anti-incendie (10) selon la revendication 1, caractérisé en ce que l'élément de liaison mécanique (28) est apte à prendre trois positions distinctes, comportant des positions de fonctionnement normal et une position de verrouillage, ladite position de verrouillage entraînant un verrouillage en position de déconnexion d'organe de commande (32) de connexion/déconnexion du dispositif démarreur-contrôleur (2).Fire protection device (10) according to claim 1, characterized in that the mechanical connecting element (28) is adapted to take three distinct positions, having normal operating positions and a locking position, said position of locking causing a lock in the disconnection position of control member (32) for connection / disconnection of the starter-controller device (2). Dispositif de protection anti-incendie (10) selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que ledit agent d'extinction d'incendie est un gaz ou une mousse.Fire protection device (10) according to any of claims 1 or 2, characterized in that said fire extinguishing agent is a gas or a foam. Dispositif de protection anti-incendie (10) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit seuil de température prédéterminé est de110°C.Fire protection device (10) according to any one of claims 1 to 3, characterized in that said predetermined temperature threshold is 110 ° C. Dispositif de protection anti-incendie (10) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la cartouche (17) comprenant un agent d'extinction d'incendie est positionnée sensiblement en regard du ou des éléments d'injection (20a, 20b).Fire protection device (10) according to any one of claims 1 to 4, characterized in that the cartridge (17) comprising a fire extinguishing agent is positioned substantially facing the injection element or elements (20a, 20b). Système de protection anti-incendie (1) d'une installation électrique, caractérisé en ce qu'il comprend un dispositif démarreur-contrôleur (2) de l'installation électrique et un dispositif de protection anti-incendie (10) conforme à l'une quelconque des revendications 1 à 5, le dispositif de protection anti-incendie (10) étant apte à être fixé en position frontale au dispositif démarreur-contrôleur.Fire protection system (1) of an electrical installation, characterized in that it comprises a starter-controller device (2) of the electrical installation and a fire protection device (10) according to the any one of claims 1 to 5, the fire protection device (10) being adapted to be fixed in front position to the starter-controller device.
EP15189047.2A 2014-10-09 2015-10-09 Fire-protection device of a starter-controller device of an electrical installation Active EP3006092B1 (en)

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US10463897B2 (en) 2019-11-05
FR3026956B1 (en) 2019-12-20
EP3006092B1 (en) 2021-09-15
US20160101305A1 (en) 2016-04-14

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