EP2594319B1 - Assembly for extinguishing or making inert with a synthetic liquid extinguishing agent - Google Patents

Assembly for extinguishing or making inert with a synthetic liquid extinguishing agent Download PDF

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Publication number
EP2594319B1
EP2594319B1 EP11189697.3A EP11189697A EP2594319B1 EP 2594319 B1 EP2594319 B1 EP 2594319B1 EP 11189697 A EP11189697 A EP 11189697A EP 2594319 B1 EP2594319 B1 EP 2594319B1
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EP
European Patent Office
Prior art keywords
extinguishing agent
extinguishing
fire
installation according
nozzles
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EP11189697.3A
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German (de)
French (fr)
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EP2594319A1 (en
Inventor
Wolfgang Habitzl
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Minimax GmbH and Co KG
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Minimax GmbH and Co KG
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Priority to ES11189697.3T priority Critical patent/ES2685512T3/en
Priority to EP11189697.3A priority patent/EP2594319B1/en
Priority to US13/671,705 priority patent/US9387352B2/en
Publication of EP2594319A1 publication Critical patent/EP2594319A1/en
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Publication of EP2594319B1 publication Critical patent/EP2594319B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/02—Permanently-installed equipment with containers for delivering the extinguishing substance
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
    • A62C37/10—Releasing means, e.g. electrically released
    • A62C37/11—Releasing means, e.g. electrically released heat-sensitive
    • A62C37/16—Releasing means, e.g. electrically released heat-sensitive with thermally-expansible links

Definitions

  • the invention relates to a system for extinguishing and / or inerting according to the preamble of the first claim.
  • Prior art for liquid extinguishing agents such as water and aqueous solutions are fire extinguishing systems in which this extinguishing liquid is stored in extinguishing agent containers and is conveyed by a suitable conveyor such as a pump through pipes to the extinguishing nozzles and discharged through this to the fire or in a room to be inerted becomes.
  • Synthetic extinguishing agents are stored in liquid containers in pressure vessels. Since in most cases the internal vapor pressure of the extinguishing agent is not sufficient to transport the extinguishing agent in the prescribed time through a pipeline and to ensure the required minimum nozzle pressure, in most cases pressurization with a gas, eg. Nitrogen. At the nozzles evaporates the liquid extinguishing agent, creating a gaseous Lösch capablees extinguishing agent-air mixture is formed.
  • Synthetic liquid extinguishing or inerting agents are extinguishing agents such as halogenated hydrocarbons, fluorocarbons fluoroketones or synthetic fluids with comparable properties.
  • the document US 2002/027143 A1 discloses a liquefied gas quench plant in a quench tank and special sputter nozzles.
  • the extinguishing agent is hereby stored in the quench tank at a pressure of up to 100 psig, based on room temperature of 25 ° C.
  • the extinguishing agent is forced through the piping network by a propellant gas under high pressure, which is stored in a separate container and introduced into the extinguishing agent container. There is no control of the application of the amount of extinguishing agent via a fire alarm and / or control center or concentration sensors.
  • EP 0557275 B1 describes a fire extinguishing procedure that uses different synthetic extinguishing agents to prevent fire in a confined space.
  • DE 100 51 662 A1 describes a method for extinguishing a fire which has broken out within a closed space by means of nitrogen, compressed gas cylinders serving to store and store this gas.
  • DE 10 2006 048 015 A1 describes a fire extinguishing system for a housing in which an extinguishing agent container with chemical liquids is arranged as extinguishing agent, wherein as extinguishing NOVEC 1230, HFC 227a, HFC 125, fat Ex, argon or N 2 are arranged, wherein a propellant gas from a charging cartridge discharges the extinguishing agent ,
  • the extinguishing agent container is in any case a pressure vessel.
  • DE 696 01 861 T2 describes a fire extinguishing agent which comprises at least one partially fluorinated compound and a process for extinguishing, combating or preventing fires using such compositions, said fire extinguishing agent also being called C 4 F 9 OCH 3 .
  • the vapor pressure of said synthetic liquid extinguishing agent at 21 ° C may be between 50 and 0.1 bar.
  • synthetic liquid extinguishing media with too low a vapor pressure with a gas e.g. Nitrogen permanent or superimposed upon release with pressure. Therefore, it is assumed in the storage, transport, delivery and spreading over extinguishing nozzles in plants of this type that these extinguishing agents are gases for the approved and costly pressure vessels, extinguishing nozzles, valves, pipe networks, filling and monitoring equipment As well as special components are required, making the creation and operation of fire extinguishing systems with synthetic liquid extinguishing agent is extremely expensive.
  • the solution according to the invention provides a system for extinguishing and inerting with a synthetic liquid, which consists of the extinguishing agent container, the conveyor for the extinguishing agent, the pipeline to the nozzles and fittings, with an event detector is arranged, detects the fire signals and to a fire detector and / or control center forwards.
  • a synthetic liquid extinguishing agent is stored in a preferably closed extinguishing agent tank at a low vapor pressure of ⁇ 3 bar based on 21 ° C.
  • a conveyor promotes the synthetic extinguishing agent via a pipe to nozzles over which it is evaporated until a certain concentration is achieved in the space to be monitored. This concentration is measured and regulated by a concentration sensor and can be calculated in advance by appropriate calculations and design of the system.
  • the synthetic extinguishing agent is a non-flammable, non-flammable, electrically non-conductive liquid extinguishing agent, advantageously having a vapor pressure at 25 ° of 25 to 28 KPa, preferably 26.8 KPa.
  • the synthetic liquid extinguishing agent at 21 ° C has a density of 1,400 to 1,800 kg / m 3 .
  • liquid extinguishing agents are FK-5-1-12,], 1,1,1,2,2,4,5,5,5-NONAFLUORO-4- (TRIFLUOROMETHYL) -3-PENTANONE (C4F9OCH3) or other synthetic fluids like fluoroketones with comparable properties.
  • the extinguishing agent container is a closed extinguishing agent container, which may be made of plastic, metal or other suitable materials. On it openings for receiving or for connection of level monitoring, a drying cartridge with valve, filling openings, removal openings are arranged.
  • the extinguishing agent containers are only designed for an operating pressure of up to 3 bar. This allows cost-effective solutions and requires less effort for technical approvals.
  • a level monitoring such as a mechanical float or electrical level monitoring such as ultrasound. From the level monitoring, a signal can be given via electrical lines or via radio to a fire alarm and / or control center.
  • a drying cartridge with valve can be arranged in the extinguishing agent container.
  • This can be a single or reusable dehumidification cartridge for dehumidifying the air flowing in during extinguishing agent extraction.
  • An integrated valve then optionally diverts a resulting overpressure into the environment in the container. This overpressure should be at 2 bar. The response value depends on the extinguishing agent used.
  • a dehumidifier such as a dehumidifier.
  • a drying cartridge e.g. a pressure relief device for overpressure and underpressure, e.g. a valve or a combination of these devices.
  • the systems are equipped with a pressure relief valve to compensate for the volume reduction caused by the discharge of the extinguishing agent. As a rule, this air is sucked from the outside.
  • a gas e.g. Nitrogen
  • a pump which is suitable for conveying or for increasing the pressure of liquid media.
  • the drive can be done electrically or pneumatically.
  • the conduits used to convey the synthetic liquid extinguishing agent can be made of metal, plastic or other suitable materials.
  • the pipelines are designed for the usual pressure of 16 bar, as they are common for conventional water systems.
  • the nozzles for dispensing the synthetic liquid extinguishing agent are nozzles used for the fine atomization of water, e.g. Full or hollow cone nozzles.
  • extinguishing agent container may also be advantageous to arrange several extinguishing agent container.
  • one or more concentration sensors are arranged, which are designed as oxygen or extinguishing agent sensors, the detected value of which enables a direct determination of the extinguishing agent concentration in the relevant room.
  • This value serves as a controlled variable for the quantity of extinguishing agent to be delivered.
  • it is forwarded to the fire alarm and / or control center, which controls the discharge of the amount of extinguishing agent via the conveyor after a predetermined value or limit.
  • event messages are arranged. These may advantageously be automatic event reporting. These detect deviations from the normal state of the environment such as e.g. Fire characteristics or signals that indicate thermal decomposition and whose cause may be a fire or a fire or smoldering fire or physical characteristics of any other incident that may cause a fire. Furthermore, the signals detected by the event detector are called fire signals.
  • the smoke detectors CO detectors, fire gas detectors, flame detectors, radiation detectors, Rauchansaugsysteme and manual triggering devices such as manual call points.
  • the fire alarm and control unit carries out all the monitoring, control, regulation, alarms, switching off and on and forwarding of operating states required for the function of the system.
  • the fire alarm and control center can be connected both to the conveyor and to the level monitoring device. Furthermore, the fire alarm and / or control center detects and processes the signals of the event report.
  • the solution according to the invention has the advantage that it is less expensive and requires less technical effort compared to previous systems with synthetic liquid extinguishing agents.
  • the extinguishing agent container which is designed only up to 3 bar and the application with a conveyor, no additional pressurization of the extinguishing agent is required, an additional storage volume in the pressure vessel of the extinguishing agent and / or additional pressure vessel with the gas for pressurization accounts. Also, maintenance and service work is facilitated and simplified, since the refilling of the extinguishing agent is not carried out in pressure vessels.
  • the figure shows the schematic representation of the fire extinguishing system according to the invention, in which an extinguishing agent container 1 contains the liquid synthetic extinguishing agent FK-5-1-12, wherein in the closed extinguishing agent container only the autogenous pressure of the extinguishing agent up to 3 bar at 21 ° C prevails.
  • the extinguishing agent tank level control 2 is arranged, which is designed as a mechanical float and is in communication with the fire alarm and / or control unit 9.
  • a drying cartridge 3.1 with valve 3.2 or separated a drying cartridge 3.1 and a valve 3.2 (not shown separately).
  • the drying cartridge 3.1 is a device with which the inflowing air is dehumidified when extinguishing agent is removed.
  • a pipe 5 leads to the nozzles 6, via which the extinguishing agent is evaporated in the space to be extinguished or rendered inert in the form of a gas, wherein a conveyor 4 in the pipeline 5 promotes the synthetic liquid extinguishing agent to the nozzles 6.
  • an electrical line 10 is arranged, which is monitored for wire breakage and / or short circuit, with the conveyor 4 a, or then can be switched off, in a preferred embodiment, this shutdown occurs when a certain extinguishing agent concentration is reached in the space to be deleted.
  • at least one concentration sensor 7 is arranged, which measures the current oxygen or extinguishing agent concentration and transmits a signal to the fire alarm and / or control center 9.
  • At least one event detector For detecting a specific event in the protected area such as a fire in this at least one event detector is arranged, which in case he receives a signal deviating from the normal environmental conditions, which receives a potential danger situation such as a fire, a signal to the fire alarm and / or Control unit 9 and thus triggers an alarm and activates the conveyor 4.

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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

Die Erfindung betrifft eine Anlage zum Löschen und/oder Inertisieren entsprechend dem Oberbegriff des ersten Patentanspruches.
Stand der Technik für flüssige Löschmittel wie Wasser und wässrige Lösungen sind Feuerlöschanlagen, in welchen diese Löschflüssigkeit in Löschmittelbehältern gelagert wird und mit einer geeigneten Fördereinrichtung wie einer Pumpe durch Rohre zu den Löschdüsen gefördert wird und durch diese auf den Brandherd oder in einen zu inertisierenden Raum ausgebracht wird.The invention relates to a system for extinguishing and / or inerting according to the preamble of the first claim.
Prior art for liquid extinguishing agents such as water and aqueous solutions are fire extinguishing systems in which this extinguishing liquid is stored in extinguishing agent containers and is conveyed by a suitable conveyor such as a pump through pipes to the extinguishing nozzles and discharged through this to the fire or in a room to be inerted becomes.

Synthetische Löschmittel werden flüssig in Druckbehältern gelagert. Da in den meisten Fällen der Eigendampfdruck der Löschmittel nicht ausreicht um das Löschmittel in der vorgeschriebenen Zeit durch eine Rohrleitung zu befördern und den erforderlichen Düsenmindestdruck sicher zu stellen, erfolgt in den meisten Fällen eine Druckbeaufschlagung mit einem Gas, z. B. Stickstoff. An den Düsen verdampft das flüssige Löschmittel, wodurch ein gasförmiges löschwirksames Löschmittel-Luft-Gemisch entsteht. Synthetische flüssige Lösch- oder Inertisierungsmittel sind Löschmittel wie halogenierte Kohlenwasserstoffe, Fluorkohlenwasserstoffe Fluorketone bzw. synthetische Flüssigkeiten mit vergleichbaren Eigenschaften. Alle Komponenten der Löschanlage (Rohre, Ventile, Behälter, Düsen) müssen für den entsprechenden Druck mindestens für 25 bar ausgelegt sein. Dies erfordert einen entsprechenden technischen und finanziellen Aufwand. Auch die verwendete Druckbeaufschlagung erfordert zusätzliches Speichervolumen im Druckbehälter oder zusätzliche Druckbehälter mit dem Gas zur Druckbeaufschlagung.Synthetic extinguishing agents are stored in liquid containers in pressure vessels. Since in most cases the internal vapor pressure of the extinguishing agent is not sufficient to transport the extinguishing agent in the prescribed time through a pipeline and to ensure the required minimum nozzle pressure, in most cases pressurization with a gas, eg. Nitrogen. At the nozzles evaporates the liquid extinguishing agent, creating a gaseous Löschwirksames extinguishing agent-air mixture is formed. Synthetic liquid extinguishing or inerting agents are extinguishing agents such as halogenated hydrocarbons, fluorocarbons fluoroketones or synthetic fluids with comparable properties. All components of the extinguishing system (pipes, valves, containers, nozzles) must be designed for the corresponding pressure at least for 25 bar. This requires a corresponding technical and financial effort. The pressure applied requires additional storage volume in the pressure vessel or additional pressure vessel with the gas to pressurize.

Das Dokument US 2002/027143 A1 offenbart eine Löschanlage mit verflüssigtem Gas in einem Löschbehälter und speziellen Zerstäubungsdüsen. Das Löschmittel wird hierbei im Löschbehälter mit einem Druck von bis zu 100 psig, bezogen auf Raumtemperatur von 25 °C, gelagert. Das Löschmittel wird durch ein unter hohem Druck stehendes Treibgas, welches in einem separaten Behälter gelagert ist und in den Löschmittelbehälter eingebracht wird, durch das Rohrleitungsnetz gedrückt. Es erfolgt keine Regelung der Ausbringung der Löschmittelmenge über eine Brandmelder- und/oder Steuerzentrale oder über Konzentrationssensoren.The document US 2002/027143 A1 discloses a liquefied gas quench plant in a quench tank and special sputter nozzles. The extinguishing agent is hereby stored in the quench tank at a pressure of up to 100 psig, based on room temperature of 25 ° C. The extinguishing agent is forced through the piping network by a propellant gas under high pressure, which is stored in a separate container and introduced into the extinguishing agent container. There is no control of the application of the amount of extinguishing agent via a fire alarm and / or control center or concentration sensors.

EP 0557275 B1 beschreibt ein Feuerlöschverfahren, bei dem unterschiedliche synthetische Löschmittel eingesetzt werden, um in einem abgeschlossenen Raum einen Brand nicht entstehen zu lassen. EP 0557275 B1 describes a fire extinguishing procedure that uses different synthetic extinguishing agents to prevent fire in a confined space.

Der Einsatz von N2 und CO2 zur Inertisierung wird in DE 44 32 346 C1 beschrieben.The use of N 2 and CO 2 for inerting is described in DE 44 32 346 C1 described.

DE 100 51 662 A1 beschreibt ein Verfahren zum Löschen eines innerhalb eines geschlossenen Raumes ausgebrochenen Feuers mittels Stickstoff, wobei Druckgasflaschen zur Aufbewahrung und Lagerung dieses Gases dienen. DE 100 51 662 A1 describes a method for extinguishing a fire which has broken out within a closed space by means of nitrogen, compressed gas cylinders serving to store and store this gas.

DE 10 2006 048 015 A1 beschreibt eine Feuerlöschanlage für ein Gehäuse, in der ein Löschmittelbehälter mit chemischen Flüssigkeiten als Löschmittel angeordnet ist, wobei als Löschmittel NOVEC 1230, HFC 227a, HFC 125, Fett Ex, Argon oder N2 angeordnet sind, wobei ein Treibgas aus einer Aufladepatrone das Löschmittel ausbringt. Der Löschmittelbehälter stellt in jedem Fall einen Druckbehälter dar. DE 10 2006 048 015 A1 describes a fire extinguishing system for a housing in which an extinguishing agent container with chemical liquids is arranged as extinguishing agent, wherein as extinguishing NOVEC 1230, HFC 227a, HFC 125, fat Ex, argon or N 2 are arranged, wherein a propellant gas from a charging cartridge discharges the extinguishing agent , The extinguishing agent container is in any case a pressure vessel.

DE 696 01 861 T2 beschreibt ein Feuerlöschmittel, welches mindestens eine teilweise fluorierte Verbindung umfasst und ein Verfahren, um Brände unter Verwendung solcher Zusammensetzungen zu löschen, zu bekämpfen oder zu verhindern, wobei zu den genannten Mitteln zum Feuerlöschen auch C4F9OCH3 genannt ist. DE 696 01 861 T2 describes a fire extinguishing agent which comprises at least one partially fluorinated compound and a process for extinguishing, combating or preventing fires using such compositions, said fire extinguishing agent also being called C 4 F 9 OCH 3 .

Der Dampfdruck der genannten synthetischen flüssigen Löschmittel bei 21°C kann zwischen 50 und 0,1 bar liegen. Um einen zum Ausbringen benötigten Mindestdruck zu haben werden synthetischen flüssigen Löschmittel mit einem zu geringen Dampfdruck mit einem Gas, z.B. Stickstoff permanent oder bei Auslösung mit Druck überlagert. Deshalb wird bei der Lagerung, dem Transport, der Förderung und dem Ausbringen über Löschdüsen in Anlagen dieser Art davon ausgegangen, dass es sich bei diesen Löschmitteln um Gase handelt, für die zulassungspflichtige und kostenaufwendige Druckbehälter, Löschdüsen, Ventile, Rohrnetze, Füll- und Überwachungseinrichtungen sowie Sonderbauteile erforderlich sind, wodurch das Erstellen und Betreiben von Feuerlöschanlagen mit synthetischem flüssigem Löschmittel ausgesprochen kostenaufwendig wird. Alle Komponenten, der Löschanlage (Rohre, Ventile, Behälter, Düsen) müssen für den entsprechenden Druck, mindesten für 25 bar ausgelegt sein. Dies erfordert einen entsprechenden technischen und finanziellen Aufwand. Auch die verwendete Druckbeaufschlagung erfordert zusätzliches Speichervolumen im Druckbehälter und/oder zusätzliche Druckbehälter mit dem Gas zur Druckbeaufschlagung.The vapor pressure of said synthetic liquid extinguishing agent at 21 ° C may be between 50 and 0.1 bar. In order to have a minimum pressure required for dispensing, synthetic liquid extinguishing media with too low a vapor pressure with a gas, e.g. Nitrogen permanent or superimposed upon release with pressure. Therefore, it is assumed in the storage, transport, delivery and spreading over extinguishing nozzles in plants of this type that these extinguishing agents are gases for the approved and costly pressure vessels, extinguishing nozzles, valves, pipe networks, filling and monitoring equipment As well as special components are required, making the creation and operation of fire extinguishing systems with synthetic liquid extinguishing agent is extremely expensive. All components of the extinguishing system (pipes, valves, tanks, nozzles) must be designed for the corresponding pressure, at least for 25 bar. This requires a corresponding technical and financial effort. The pressure applied also requires additional storage volume in the pressure vessel and / or additional pressure vessel with the gas for pressurization.

Es ist daher Aufgabe der Erfindung, eine Anlage zum Löschen und/oder Inertisieren zu entwickeln, die an die Eigenschaften des verwendeten Löschmittels angepasst ist.It is therefore an object of the invention to develop a system for extinguishing and / or inerting, which is adapted to the properties of the extinguishing agent used.

Diese Aufgabe wird durch eine Anlage nach den Merkmalen des ersten Patentanspruches gelöst.This object is achieved by a system according to the features of the first claim.

Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder.Subclaims give advantageous embodiments of the invention again.

Die erfindungsgemäße Lösung sieht eine Anlage zum Löschen und Inertisieren mit einer synthetischen Flüssigkeit vor, welche aus dem Löschmittelbehälter, der Fördereinrichtung für das Löschmittel, der Rohrleitung zu den Düsen und Armaturen besteht, wobei ein Ereignismelder angeordnet ist, der Brandsignale erfasst und an eine Brandmelder- und/oder Steuerzentrale weitermeldet.The solution according to the invention provides a system for extinguishing and inerting with a synthetic liquid, which consists of the extinguishing agent container, the conveyor for the extinguishing agent, the pipeline to the nozzles and fittings, with an event detector is arranged, detects the fire signals and to a fire detector and / or control center forwards.

In der Anlage wird ein synthetisches flüssiges Löschmittel in einem vorzugsweise geschlossenen Löschmittelbehälter bei geringem Dampfdruck von < 3 bar bezogen auf 21°C gelagert. Eine Fördereinrichtung fördert das synthetische Löschmittel über eine Rohrleitung zu Düsen, über die diese so lange verdampft wird, bis eine bestimmte Konzentration im zu überwachenden Raum erreicht wird. Diese Konzentration wird durch einen Konzentrationssensor gemessen und geregelt, und kann durch entsprechende Berechnungen und Auslegung der Anlage vorab berechnet werden. Das synthetische Löschmittel ist ein nicht brennbares, nicht entflammbares, elektrisch nicht leitendes flüssiges Löschmittel, vorteilhafterweise mit einem Dampfdruck bei 25° von 25 bis 28 KPa, vorzugsweise von 26,8 KPa, zu verwenden.In the plant, a synthetic liquid extinguishing agent is stored in a preferably closed extinguishing agent tank at a low vapor pressure of <3 bar based on 21 ° C. A conveyor promotes the synthetic extinguishing agent via a pipe to nozzles over which it is evaporated until a certain concentration is achieved in the space to be monitored. This concentration is measured and regulated by a concentration sensor and can be calculated in advance by appropriate calculations and design of the system. The synthetic extinguishing agent is a non-flammable, non-flammable, electrically non-conductive liquid extinguishing agent, advantageously having a vapor pressure at 25 ° of 25 to 28 KPa, preferably 26.8 KPa.

Weiterhin ist es vorteilhaft, dass das synthetische flüssige Löschmittel bei 21°C eine Dichte von 1.400 bis 1.800 kg/m3 aufweist.Furthermore, it is advantageous that the synthetic liquid extinguishing agent at 21 ° C has a density of 1,400 to 1,800 kg / m 3 .

Als flüssige Löschmittel sind FK-5-1-12,], 1,1,1,2,2,4,5,5,5-NONAFLUORO-4-(TRIFLUOROMETHYL)-3-PENTANONE (C4F9OCH3) oder andere synthetische Flüssigkeiten wie Fluorketone mit vergleichbaren Eigenschaften geeignet.As liquid extinguishing agents are FK-5-1-12,], 1,1,1,2,2,4,5,5,5-NONAFLUORO-4- (TRIFLUOROMETHYL) -3-PENTANONE (C4F9OCH3) or other synthetic fluids like fluoroketones with comparable properties.

Der Löschmittelbehälter stellt einen geschlossenen Löschmittelbehälter dar, der aus Kunststoff, Metall oder anderen geeigneten Materialien bestehen kann. An ihm sind Öffnungen zur Aufnahme bzw. zum Anschluss von Füllstandsüberwachungen, einer Trocknungspatrone mit Ventil, Füllöffnungen, Entnahmeöffnungen angeordnet Die Löschmittelbehälter sind nur für einen Betriebsdruck von bis zu 3 bar ausgelegt. Dies ermöglicht kostengünstige Lösungen und erfordert einen geringeren Aufwand für die technischen Zulassungen.The extinguishing agent container is a closed extinguishing agent container, which may be made of plastic, metal or other suitable materials. On it openings for receiving or for connection of level monitoring, a drying cartridge with valve, filling openings, removal openings are arranged The extinguishing agent containers are only designed for an operating pressure of up to 3 bar. This allows cost-effective solutions and requires less effort for technical approvals.

Im Löschmittelbehälter kann eine Füllstandsüberwachung wie ein mechanischer Schwimmer oder eine elektrische Füllstandsüberwachung wie Ultraschall angeordnet sein. Von der Füllstandsüberwachung kann ein Signal über elektrische Leitungen oder aber auch über Funk an eine Brandmelder- und/oder Steuerzentrale gegeben werden.In the extinguishing agent tank can be arranged a level monitoring such as a mechanical float or electrical level monitoring such as ultrasound. From the level monitoring, a signal can be given via electrical lines or via radio to a fire alarm and / or control center.

Im Löschmittelbehälter kann eine Trocknungspatrone mit Ventil angeordnet werden. Das kann eine Ein- oder Mehrwegentfeuchtungspatrone zur Entfeuchtung der bei der Löschmittelentnahme nachströmenden Luft sein. Ein integriertes Ventil leitet dann gegebenenfalls im Behälter einen entstehenden Überdruck in die Umgebung ab. Dieser Überdruck sollte bei 2 bar liegen. Der Ansprechwert richtet sich nach dem jeweils verwendeten Löschmittel.In the extinguishing agent container, a drying cartridge with valve can be arranged. This can be a single or reusable dehumidification cartridge for dehumidifying the air flowing in during extinguishing agent extraction. An integrated valve then optionally diverts a resulting overpressure into the environment in the container. This overpressure should be at 2 bar. The response value depends on the extinguishing agent used.

Alternativ sind möglich, nur eine Entfeuchtungsvorrichtung wie z.B. eine Trocknungspatrone, eine Drucksicherung für Über - und Unterdrücke wie z.B. ein Ventil oder eine Kombination dieser Geräte. Die Anlagen sind mit einem Ventil zur Drucksicherung gegen Unterdruck ausgerüstet, um die beim Ausbringen des Löschmittels entstehende Volumenreduzierung auszugleichen. In der Regel wird hierbei Luft von Aussen angesaugt. Eine weitere Alternative kann der Ausgleich der Volumenreduzierung durch ein Gas, z.B. Stickstoff, erfolgen, welches von Aussen dem Löschbehälter zugeführt wird.Alternatively, it is possible to use only a dehumidifier, such as a dehumidifier. a drying cartridge, a pressure relief device for overpressure and underpressure, e.g. a valve or a combination of these devices. The systems are equipped with a pressure relief valve to compensate for the volume reduction caused by the discharge of the extinguishing agent. As a rule, this air is sucked from the outside. Another alternative may be to compensate for the volume reduction by a gas, e.g. Nitrogen, which is supplied from the outside of the extinguishing container.

Als Fördereinrichtung ist es vorteilhaft, eine Pumpe zu verwenden, die zum Fördern bzw. zur Druckerhöhung von flüssigen Medien geeignet ist. Der Antrieb kann elektrisch oder pneumatisch erfolgen.As a conveyor, it is advantageous to use a pump which is suitable for conveying or for increasing the pressure of liquid media. The drive can be done electrically or pneumatically.

Die verwendeten Rohrleitungen zum Fördern des synthetischen flüssigen Löschmittels können aus Metall, Kunststoff oder sonstig geeigneten Materialien bestehen. Die Rohrleitungen sind für die übliche Druckstufe von 16 bar ausgelegt, wie sie für konventionelle Wasseranlagen üblich sind.The conduits used to convey the synthetic liquid extinguishing agent can be made of metal, plastic or other suitable materials. The pipelines are designed for the usual pressure of 16 bar, as they are common for conventional water systems.

Bei den Düsen für das Ausbringen des synthetischen flüssigen Löschmittels handelt es sich um Düsen, wie sie für die Feinzerstäubung von Wasser verwendet werden, z.B. Voll- oder Hohlkegeldüsen.The nozzles for dispensing the synthetic liquid extinguishing agent are nozzles used for the fine atomization of water, e.g. Full or hollow cone nozzles.

Vorteilhaft ist es, mehrere Fördereinrichtungen zwischen dem Löschmittelbehälter und den Düsen anzuordnen. Damit ist es möglich, das Löschmittel in unterschiedliche Bereiche auszubringen, in denen ein Löschvorgang durchgeführt werden soll.It is advantageous to arrange a plurality of conveyors between the extinguishing agent container and the nozzles. This makes it possible to deploy the extinguishing agent in different areas in which a deletion process is to be performed.

Statt eines Löschmittelbehälters kann auch vorteilhaft sein, mehrerer Löschmittelbehälter anzuordnen.Instead of an extinguishing agent container may also be advantageous to arrange several extinguishing agent container.

Im zu überwachenden und zu löschenden oder zu inertisierenden Raum sind ein oder mehrere Konzentrationssensoren angeordnet, die als Sauerstoff- oder Löschmittelsensoren ausgebildet sind, deren erfasster Wert einen direkten Aufschluss auf die Löschmittelkonzentration im betreffenden Raum ermöglichen. Dieser Wert dient als Regelgröße für die auszubringende Löschmittelmenge. Dazu wird er an die Brandmelder- und/oder Steuerzentrale weitergegeben, die nach einem vorgegebenen Wert oder Grenzwert das Ausbringen der Löschmittelmenge über die Fördereinrichtung steuert. Um ein Alarmsignal zur erfassen, sind Ereignismelder angeordnet. Dabei kann es sich vorteilhafterweise um automatische Ereignismelder handeln. Diese erkennen Abweichungen vom Normalzustand der Umgebung wie z.B. Brandkenngrößen oder Signale, die auf eine thermische Zersetzung hindeuten und deren Ursache ein Brand bzw. ein Entstehungs- oder Schwelbrandbrand sein können oder physikalische Merkmale eines sonstigen Störfalls, der einen Brand zur Folge haben kann. Im weiteren werden die Signale, die der Ereignismelder erfasst, Brandsignale genannt.In the space to be monitored and to be extinguished or to be inerted, one or more concentration sensors are arranged, which are designed as oxygen or extinguishing agent sensors, the detected value of which enables a direct determination of the extinguishing agent concentration in the relevant room. This value serves as a controlled variable for the quantity of extinguishing agent to be delivered. For this purpose, it is forwarded to the fire alarm and / or control center, which controls the discharge of the amount of extinguishing agent via the conveyor after a predetermined value or limit. In order to detect an alarm signal, event messages are arranged. These may advantageously be automatic event reporting. These detect deviations from the normal state of the environment such as e.g. Fire characteristics or signals that indicate thermal decomposition and whose cause may be a fire or a fire or smoldering fire or physical characteristics of any other incident that may cause a fire. Furthermore, the signals detected by the event detector are called fire signals.

Vorzugsweise sind das Rauchmelder, CO-Melder, Brandgasmelder, Flammenmelder, Strahlungsmelder, Rauchansaugsysteme und manuelle Auslöseeinrichtungen wie Handfeuermelder.Preferably, the smoke detectors, CO detectors, fire gas detectors, flame detectors, radiation detectors, Rauchansaugsysteme and manual triggering devices such as manual call points.

Die Brandmelde- und Steuerzentrale führt alle für die Funktion der Anlage erforderlichen Überwachungen, Steuerungen, Regelungen, Alarmierungen, Ab- bzw. Einschaltungen und Weiterleitungen von Betriebszuständen durch. Die Brandmelder- und Steuerzentrale kann sowohl mit der Fördereinrichtung als auch mit der Füllstandsüberwachungseinrichtung verbunden sein. Weiterhin erfasst und verarbeitet die Brandmelder- und/oder Steuerzentrale die Signale der Ereignismelder.The fire alarm and control unit carries out all the monitoring, control, regulation, alarms, switching off and on and forwarding of operating states required for the function of the system. The fire alarm and control center can be connected both to the conveyor and to the level monitoring device. Furthermore, the fire alarm and / or control center detects and processes the signals of the event report.

Zur Übertragung von Steuersignalen an Sensoren bzw. Aktuatoren sind elektrische Steuerleitungen angeordnet.For the transmission of control signals to sensors or actuators electrical control lines are arranged.

Die erfindungsgemäße Lösung hat den Vorteil, dass sie kostengünstiger ist und einen geringeren technischen Aufwand erfordert im Vergleich zu bisherigen Anlagen mit synthetischen flüssigen Löschmitteln. Durch Lagerung des Löschmittels im Löschmittelbehälter, der nur bis zu 3 bar ausgelegt ist und die Ausbringung mit einer Fördereinrichtung, ist keine zusätzliche Druckbeaufschlagung des Löschmittels erforderlich, ein zusätzliches Speichervolumen im Druckbehälter des Löschmittels und/oder zusätzliche Druckbehälter mit dem Gas zur Druckbeaufschlagung entfallen. Auch Wartungs- und Servicearbeiten sind erleichtert und vereinfacht, da das Nachfüllen des Löschmittels nicht in Druckbehältern erfolgt.The solution according to the invention has the advantage that it is less expensive and requires less technical effort compared to previous systems with synthetic liquid extinguishing agents. By storing the extinguishing agent in the extinguishing agent container, which is designed only up to 3 bar and the application with a conveyor, no additional pressurization of the extinguishing agent is required, an additional storage volume in the pressure vessel of the extinguishing agent and / or additional pressure vessel with the gas for pressurization accounts. Also, maintenance and service work is facilitated and simplified, since the refilling of the extinguishing agent is not carried out in pressure vessels.

Im Folgenden wird die Erfindung an einem Ausführungsbeispiel und einer Figur näher erläutert.In the following the invention will be explained in more detail with reference to an embodiment and a figure.

Die Figur zeigt die schematische Darstellung der erfindungsgemäßen Feuerlöschanlage, bei der ein Löschmittelbehälter 1 das flüssige synthetische Löschmittel FK-5-1-12 enthält, wobei im geschlossenen Löschmittelbehälter nur der Eigendruck vom Löschmittel bis zu 3 bar bei 21°C herrscht. Im Löschmittelbehälter ist eine Füllstandsüberwachung 2 angeordnet, die als mechanischer Schwimmer ausgeführt ist und mit der Brandmelder- und/oder Steuerzentrale 9 in Verbindung steht. Optional befindet sich am Löschmittelbehälter 1 eine Trocknungspatrone 3.1 mit Ventil 3.2 oder getrennt eine Trocknungspatrone 3.1 und ein Ventil 3.2 (getrennt nicht dargestellt). Damit kann Überdruck oberhalb von 3 bar und Unterdruck im Löschmittelbehälter 1 abgebaut werden. Bei der Trocknungspatrone 3.1 handelt es sich um ein Gerät, mit dem die nachströmende Luft bei Löschmittelentnahme entfeuchtet wird. Vom Löschmittelbehälter 1 führt eine Rohrleitung 5 zu den Düsen 6, über die das Löschmittel in den zu löschenden oder inertisierenden Raum in Form eines Gases verdampft wird, wobei eine Fördereinrichtung 4 in der Rohrleitung 5 das synthetische flüssige Löschmittel zu den Düsen 6 fördert.The figure shows the schematic representation of the fire extinguishing system according to the invention, in which an extinguishing agent container 1 contains the liquid synthetic extinguishing agent FK-5-1-12, wherein in the closed extinguishing agent container only the autogenous pressure of the extinguishing agent up to 3 bar at 21 ° C prevails. In the extinguishing agent tank level control 2 is arranged, which is designed as a mechanical float and is in communication with the fire alarm and / or control unit 9. Optionally located on the extinguishing agent container 1 is a drying cartridge 3.1 with valve 3.2 or separated a drying cartridge 3.1 and a valve 3.2 (not shown separately). Thus, overpressure above 3 bar and negative pressure in the extinguishing agent tank 1 can be reduced. The drying cartridge 3.1 is a device with which the inflowing air is dehumidified when extinguishing agent is removed. From the extinguishing agent tank 1 a pipe 5 leads to the nozzles 6, via which the extinguishing agent is evaporated in the space to be extinguished or rendered inert in the form of a gas, wherein a conveyor 4 in the pipeline 5 promotes the synthetic liquid extinguishing agent to the nozzles 6.

Da das synthetische flüssige Löschmittel an den Düsen gasförmig ausgebracht wird, also ein definierter Druck vorherrschen muss, funktioniert die gesamte Anlage ohne Druckmessung. Bei Anlagen, wo mehrere Löschbereiche von einem oder mehreren Löschmittelbehälter versorgt werden, sind in den Förderleitungen 5 Bereichsventile 11 angeordnet. Dieses dient zur selektiven Versorgung der Bereiche mit Lösch- oder Inertisierungsmittel.Since the synthetic liquid extinguishing agent is applied to the nozzles in gaseous form, ie a defined pressure must prevail, the entire system works without pressure measurement. In systems where multiple extinguishing areas are supplied by one or more extinguishing agent containers, 5 area valves 11 are arranged in the delivery lines. This serves to selectively supply the areas with extinguishing or inerting agent.

Zwischen der Fördereinrichtung und der Brandmelder- und Steuerzentrale 9 ist eine elektrische Leitung 10 angeordnet, die auf Drahtbruch und/oder Kurzschluss überwacht wird, mit der die Fördereinrichtung 4 ein, bzw. dann abgeschaltet werden kann, In einer bevorzugten Ausführungsform erfolgt diese Abschaltung, wenn eine bestimmte Löschmittelkonzentration im zu löschenden Raum erreicht ist. Dazu ist mindestens ein Konzentrationssensor 7 angeordnet, der die aktuelle Sauerstoff- oder Löschmittelkonzentration misst und ein Signal an die Brandmelder- und/oder Steuerzentrale 9 weitergibt.Between the conveyor and the fire alarm and control unit 9, an electrical line 10 is arranged, which is monitored for wire breakage and / or short circuit, with the conveyor 4 a, or then can be switched off, in a preferred embodiment, this shutdown occurs when a certain extinguishing agent concentration is reached in the space to be deleted. For this purpose, at least one concentration sensor 7 is arranged, which measures the current oxygen or extinguishing agent concentration and transmits a signal to the fire alarm and / or control center 9.

Zum Erfassen eines konkreten Ereignisses im Schutzbereich wie einen Brand ist in diesem mindestens ein Ereignismelder angeordnet, der im Falle, dass er ein von den normalen Umgebungsbedingungen abweichendes Signal, welches eine potentielle Gefahrensituation wie einen Brand empfängt, ein Signal an die Brandmelder- und/oder Steuerzentrale 9 und somit einen Alarm auslöst und die Fördereinrichtung 4 aktiviert.For detecting a specific event in the protected area such as a fire in this at least one event detector is arranged, which in case he receives a signal deviating from the normal environmental conditions, which receives a potential danger situation such as a fire, a signal to the fire alarm and / or Control unit 9 and thus triggers an alarm and activates the conveyor 4.

Liste der verwendeten BezugszeichenList of reference numbers used

11
LöschmittelbehälterExtinguishing agent container
22
Füllstandsüberwachunglevel monitoring
33
3.1 Entfeuchtungsgerät, z.B. Trocknungspatrone mit Ventil
3.2 Drucksicherung, z.B. Ventil3.1 Dehumidifier, eg drying cartridge with valve
3.2 Pressure relief, eg valve
44
FördereinrichtungConveyor
55
Rohrleitungpipeline
66
Düsejet
77
Konzentrationssensorconcentration sensor
88th
Ereignismelderevent detector
99
Brandmelder- und SteuerzentraleFire alarm and control center
1010
elektrische Leitungelectrical line
1111
Bereichsventilarea valve

Claims (11)

  1. Installation for extinguishing and/or inerting with synthetic liquid extinguishing agent, comprising an extinguishing agent container (1), a conveyor device (4) for the extinguishing agent, a pipeline (5) and nozzles (6), a fire alarm and/or control centre (9), an incident alarm (8) which detects fire signals and transmits them to the fire alarm and/or control centre (9), and at least one concentration sensor (7) in the space which is intended to be monitored and extinguished or rendered inert,
    characterised in that the extinguishing agent container (1) is constructed only for an operating pressure of up to 3 bar and the pipeline (5) is constructed for a pressure stage of 16 bar,
    the synthetic liquid extinguishing agent constitutes a non-flammable, non-combustible electrically non-conductive liquid with a vapour pressure at 21°C of from 0.1 to 3 bar so that the extinguishing agent changes into the gas phase after being discharged from the nozzles,
    there is located on the extinguishing agent container (1) a drying cartridge for removing moisture from inflowing air when the extinguishing agent is removed and a valve for reducing excess pressure above 3 bar and reduced pressure in the extinguishing container (1),
    the conveying device (4) is arranged between the extinguishing agent container (1) and the nozzles (6) in the pipeline (5),
    there is arranged between the conveying device (4) and the fire alarm and/or control centre (9) an electrical line (10) which is monitored for wire breakage and/or short circuit and by means of which the conveying device (4) can be switched on or off,
    wherein the at least one concentration sensor (7) detects a value of the extinguishing agent concentration and transmits it as a control variable for the quantity of extinguishing agent which is intended to be discharged to the fire alarm and/or control centre (9),
    and the fire alarm and/or control centre (9) controls the discharge of the quantity of extinguishing agent via the conveying device (4) in accordance with a predetermined value or limit value of the control variable.
  2. Installation according to claim 1, characterised in that the switching-on of the extinguishing agent supply via the conveying device (4) is carried out by the at least one incident alarm (8).
  3. Installation according to claim 1 or 2, characterised in that the liquid synthetic extinguishing agent at a temperature of 21°C has a density of from 1400 kg/m3 to 1800 kg/m3.
  4. Fire extinguishing installation according to any one of claims 1 to 3, characterised in that the liquid extinguishing agent is an FK-5-1-12 (C4F9OCH3) or a fluoroketone.
  5. Fire extinguishing installation according to any one of claims 1 to 4, characterised in that the extinguishing agent container (1) constitutes a closed extinguishing agent container (1) which comprises plastics material or metal.
  6. Fire extinguishing installation according to any one of claims 1 to 5, characterised in that a filling level monitoring system (2) is arranged in the extinguishing agent container (1).
  7. Fire extinguishing installation according to any one of claims 1 to 6, characterised in that an electrical or a pneumatically operated pump is arranged as a conveying device (4) .
  8. Fire extinguishing installation according to claim 7, characterised in that a plurality of conveying devices (4) are arranged between the extinguishing agent container (1) and the nozzles (6).
  9. Fire extinguishing installation according to any one of claims 1 to 8, characterised in that between the conveying device (4) and the nozzles (6) a section valve (11) is arranged.
  10. Fire extinguishing installation according to any one of claims 1 to 8, characterised in that the filling level monitoring system (2) is connected to the fire alarm and/or control centre (9).
  11. Fire extinguishing installation according to any one of claims 1 to 9, characterised in that an automatic or a manual fire alarm is arranged as an incident alarm (8).
EP11189697.3A 2011-11-18 2011-11-18 Assembly for extinguishing or making inert with a synthetic liquid extinguishing agent Active EP2594319B1 (en)

Priority Applications (3)

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ES11189697.3T ES2685512T3 (en) 2011-11-18 2011-11-18 Installation for extinguishing or inerting with a liquid synthetic extinguishing agent
EP11189697.3A EP2594319B1 (en) 2011-11-18 2011-11-18 Assembly for extinguishing or making inert with a synthetic liquid extinguishing agent
US13/671,705 US9387352B2 (en) 2011-11-18 2012-11-08 System for extinguishing or inerting having a synthetic liquid extinguishing agent

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US9387352B2 (en) 2016-07-12

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