EP1293230B1 - Method and device for fire fighting - Google Patents

Method and device for fire fighting Download PDF

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Publication number
EP1293230B1
EP1293230B1 EP01122164A EP01122164A EP1293230B1 EP 1293230 B1 EP1293230 B1 EP 1293230B1 EP 01122164 A EP01122164 A EP 01122164A EP 01122164 A EP01122164 A EP 01122164A EP 1293230 B1 EP1293230 B1 EP 1293230B1
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EP
European Patent Office
Prior art keywords
extinguishing
gas
liquid
pipe system
nozzle
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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.)
Expired - Lifetime
Application number
EP01122164A
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German (de)
French (fr)
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EP1293230A1 (en
Inventor
Bruno Dr. Covelli
Markus Dr. Müller
Patrick Fernandes
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Siemens Schweiz AG
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Siemens Schweiz AG
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Priority to AT01122164T priority Critical patent/ATE346659T1/en
Priority to DK01122164T priority patent/DK1293230T3/en
Priority to DE50111557T priority patent/DE50111557D1/en
Priority to ES01122164T priority patent/ES2277878T3/en
Priority to EP01122164A priority patent/EP1293230B1/en
Publication of EP1293230A1 publication Critical patent/EP1293230A1/en
Application granted granted Critical
Publication of EP1293230B1 publication Critical patent/EP1293230B1/en
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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/008—Making of fire-extinguishing materials immediately before use for producing other mixtures of different gases or vapours, water and chemicals, e.g. water and wetting agents, water and gases
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0072—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using sprayed or atomised water

Definitions

  • the present invention is in the field of fire extinguishing with an extinguishing gas, in which the flame area an extinguishing gas is supplied and thereby the atmospheric oxygen is displaced to a value below the extinguishing concentration.
  • the cooling of the fuel is carried out with an extinguishing liquid, usually water.
  • an extinguishing liquid usually water.
  • This method can control a fire and prevent its spread.
  • the extinguishing liquid often does not reach all the hidden fires, a complete erasure is not always possible.
  • New extinguishing techniques use water mist or spray, which has the same effect of protecting rooms from conventional sprinkler or deluge systems.
  • the fire is controlled but not necessarily deleted, since a deletion occurs only when the fire evaporates so much water that the oxygen concentration drops to extinguishing concentration.
  • this method of extinguishing is not covered by international guidelines and there are no bases for the design of such extinguishing systems for a safe extinguishing of all fire sizes in a protected area.
  • the oxygen depletion in the oxidation zone is achieved with inert or chemical quenching gases, wherein by mixing the supply air to the fire with the quenching gas, the oxygen content in the reaction zone is diluted so that the oxidation reaction stops. If used correctly, extinguishing gases can be completely extinguished within a few seconds. However, since the source of the fire is not cooled, there is the danger that the oxidation reaction will restart when the extinguishing concentration in the ambient air of the fire compartment decreases. For this reason, the extinguishing gas concentration in the vicinity of the fire must be maintained for several minutes, which means a high consumption of extinguishing gas and corresponding means for storing these extinguishing gas quantities.
  • foam extinguishing systems are not suitable for combating many emergence fires.
  • the invention relates to an extinguishing system for fire extinguishing with a quenching gas, with a compressed gas storage, at least one pressure vessel for the quenching gas, at least one gas outlet nozzle and a conduit system containing gas extinguishing system with which the flame area an extinguishing gas supplied and thereby the atmospheric oxygen to a value below Extinguishing concentration is displaced, and with a gas extinguishing system supplementing and a liquid storage containing system for the addition of extinguishing liquid in the line system.
  • the extinguishing gas is supplied to the extinguishing liquid and a mixing space, wherein valves are provided in the respective lines.
  • this extinguishing system is to be improved so that the delivery pressure is kept as constant as possible during the deletion.
  • the pressurized gas reservoir has a plurality of pressurized gas containers and a collecting pipe arranged between them and the line system, that a first pressure reduction element is arranged between the collecting pipe and the line system, and that a pressure line for liquid supply branches off from the collecting pipe contains second depressurizing element.
  • a first preferred embodiment of the extinguishing system according to the invention is characterized in that the admixing of extinguishing liquid takes place with the formation of a two-phase flow in the line system and in the at least one nozzle.
  • a second preferred embodiment of the extinguishing system according to the invention is characterized in that the liquid reservoir contains at least one liquid container with extinguishing liquid and an extinguishing liquid pipe from the liquid reservoir to the said pipe system.
  • a third preferred embodiment of the extinguishing system according to the invention is characterized in that, for admixing extinguishing liquid via the collecting tube and the second pressure-reducing element, the head space of the at least one liquid container is superimposed with extinguishing gas and thereby extinguishing liquid is pressed out of the at least one liquid container into the conduit system and together thereinto is supplied with the extinguishing gas of the at least one nozzle.
  • a further preferred embodiment of the extinguishing system according to the invention is characterized in that the at least one nozzle acts as a two-substance nozzle and simultaneously sprays extinguishing liquid with the extinguishing gas.
  • the extinguishing system consists according to the representation of a line system 1 with nozzles 2, which are provided as two-fluid nozzles for simultaneous spraying of quenching gas and extinguishing liquid.
  • the extinguishing gas for example an inert gas, is in a compressed gas storage 3 with several pressure vessels 5 each having a high pressure valve 5. When using only one pressure vessel 5, this is connected directly to the line system 1, when using multiple pressure vessel 5 is between them and the line system. 1 a manifold 6 is provided.
  • the collecting pipe 6 is connected to the pipe system 1 via a first gas throttle 7, by means of which the delivery pressure in the pipe system 1 is throttled to an optimum nozzle pressure.
  • the reference numeral 8 denotes a device for triggering the high-pressure valves 4.
  • the arrangement of the first gas throttle 7 exploits the phenomenon of the critical flow of compressible media by throttling in order to keep the delivery pressure as constant as possible during the deletion.
  • the delivery pressure changes only slowly and guarantees optimal nozzle pressure during the decisive deletion / flooding phase.
  • the pressure reduction caused by the throttle 7 means that when opening the valves 4 in the line system 1 and the nozzles 2 no dangerous water hammer occurs.
  • materials are used, which need not have high-pressure quality.
  • the previously described part of the inventive extinguishing system corresponds to a known gas extinguishing system.
  • heptafluoropropane can be used instead of water.
  • the extinguishing gas is supplied to the at least one nozzle 2 via the line system 1 and distributed in the protected area.
  • the headspace of the water tank 10 is superimposed with quenching gas from the manifold 6 via the second gas throttle 14 and thereby pressed water from the water tanks 10 into the conduit 12 and thus into the conduit system 1.
  • the conduit system 1 thus flows a water-gas mixture to the nozzles 2, from which at the same extinguishing gas and a small volume fraction of water is sprayed.

Abstract

To extinguish fires, an extinguishing gas is directed at the flames to displace oxygen from the ambient air. An extinguishing liquid is mixed with the gas, to be sprayed together at the flames as a fine mist to give a wetting and a cooling action. The mixing of the extinguishing liquid is a two-phase flow in a channel system (1) and at least at one jet (2). The liquid is water, delivered from water tanks (10) at a water supply unit (9). The gas is held in pressure vessels (5) at a gas supply station (3).

Description

Die vorliegende Erfindung liegt auf dem Gebiet der Brandlöschung mit einem Löschgas, bei welchem dem Flammbereich ein Löschgas zugeführt und dadurch der Luftsauerstoff auf einen Wert unterhalb der Löschkonzentration verdrängt wird.The present invention is in the field of fire extinguishing with an extinguishing gas, in which the flame area an extinguishing gas is supplied and thereby the atmospheric oxygen is displaced to a value below the extinguishing concentration.

In der Feuerlöschtechnik kommen bekanntlich drei physikalische Prinzipien zur Anwendung:

  • Kühlung des Brandstoffes unter die Oxidationstemperatur
  • Sauerstoffverarmung in der Oxidationszone
  • Abgrenzung der Sauerstoffzufuhr zur Reaktionszone.
In fire extinguishing technology, three physical principles are known to be used:
  • Cooling of the fuel below the oxidation temperature
  • Oxygen depletion in the oxidation zone
  • Delimitation of the oxygen supply to the reaction zone.

Die Kühlung des Brandstoffes wird mit einer Löschflüssigkeit, in der Regel Wasser, durchgeführt. Mit dieser Methode kann ein Brand beherrscht und dessen Ausbreitung verhindert werden. Da jedoch die Löschflüssigkeit oft nicht alle versteckten Brandherde erreicht, ist eine vollständige Löschung nicht immer möglich. Neue Löschtechniken verwenden Wassernebel oder Sprühnebel, deren Wirkung beim Schutz von Räumen ähnlich der von herkömmlichen Sprinkler- oder Sprühflutanlagen ist. Der Brand wird zwar beherrscht aber nicht unbedingt gelöscht, da eine Löschung nur dann erfolgt, wenn das Feuer so viel Wasser verdampft, dass die Sauerstoffkonzentration auf Löschkonzentration sinkt. Ausserdem ist diese Löschart nicht durch intemationale Richtlinien abgedeckt und es bestehen keine Grundlagen für die Auslegung derartiger Löschanlagen für eine sichere Löschung aller Feuergrössen in einem Schutzbereich.The cooling of the fuel is carried out with an extinguishing liquid, usually water. This method can control a fire and prevent its spread. However, since the extinguishing liquid often does not reach all the hidden fires, a complete erasure is not always possible. New extinguishing techniques use water mist or spray, which has the same effect of protecting rooms from conventional sprinkler or deluge systems. Although the fire is controlled but not necessarily deleted, since a deletion occurs only when the fire evaporates so much water that the oxygen concentration drops to extinguishing concentration. In addition, this method of extinguishing is not covered by international guidelines and there are no bases for the design of such extinguishing systems for a safe extinguishing of all fire sizes in a protected area.

Die Sauerstoffverarmung in der Oxidationszone wird mit inerten oder chemischen Löschgasen erreicht, wobei durch eine Vermischung der Zuluft zum Feuer mit dem Löschgas der Sauerstoffgehalt in der Reaktionszone so verdünnt wird, dass die Oxidationsreaktion abbricht. Bei vorschriftsgemässer Anwendung wird mit Löschgasen innerhalb weniger Sekunden eine vollständige Löschung erreicht. Da der Brandherd nicht gekühlt wird, besteht jedoch die Gefahr, dass bei Abnahme der Löschkonzentration in der Umgebungsluft des Brandherds die Oxidationsreaktion wieder startet. Aus diesem Grund muss die Löschgaskonzentration in der Umgebung des Brandes über mehrere Minuten aufrecht erhalten bleiben, was einen hohen Verbrauch an Löschgas und entsprechende Mittel zur Bevorratung dieser Löschgasmengen bedeutet.The oxygen depletion in the oxidation zone is achieved with inert or chemical quenching gases, wherein by mixing the supply air to the fire with the quenching gas, the oxygen content in the reaction zone is diluted so that the oxidation reaction stops. If used correctly, extinguishing gases can be completely extinguished within a few seconds. However, since the source of the fire is not cooled, there is the danger that the oxidation reaction will restart when the extinguishing concentration in the ambient air of the fire compartment decreases. For this reason, the extinguishing gas concentration in the vicinity of the fire must be maintained for several minutes, which means a high consumption of extinguishing gas and corresponding means for storing these extinguishing gas quantities.

Die Abgrenzung der Sauerstoffzufuhr zur Reaktionszone erfolgt in der Regel mit Schaumstoff-Löschanlagen. Wegen der Nachfolgeschäden und der anforderungsreichen Applikationstechnik wird die Schaumstoff-Löschtechnik heute nicht mehr bevorzugt. Ausserdem sind Schaumstoff-Löschanlagen für die Bekämpfung von vielen Entstehungsbränden nicht geeignet.The delimitation of the oxygen supply to the reaction zone is usually done with foam extinguishing systems. Because of the subsequent damage and the application-demanding application technology, the foam extinguishing technology is no longer preferred today. In addition, foam extinguishing systems are not suitable for combating many emergence fires.

Die Erfindung betrifft eine Löschanlage zur Brandlöschung mit einem Löschgas, mit einer eine Druckgasbevorratung, mindestens einen Druckbehälter für das Löschgas, mindestens eine Gasaustrittsdüse und ein Leitungssystem enthaltenden Gaslösch-Anlage, mit welcher dem Flammbereich ein Löschgas zugeführt und dadurch der Luftsauerstoff auf einen Wert unterhalb der Löschkonzentration verdrängt wird, und mit einer die Gaslösch-Anlage ergänzenden und eine Flüssigkeitsbevorratung enthaltenden Anlage zur Zumischung von Löschflüssigkeit in das Leitungssystem.
Bei einer in der WO-A-95/24274 beschriebenen Löschanlage dieser Art wird das Löschgas der Löschflüssigkeit und einem Mischraum zugeführt, wobei in den betreffenden Leitungen Ventile vorgesehen sind. Durch die Erfindung soll diese Löschanlage so verbessert werden, dass der Förderdruck während des Löschens möglichst konstant gehalten wird.
Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass die Druckgasbevorratung mehrere Druckgasbehälter sowie ein zwischen diesen und dem Leitungssystem angeordnetes Sammelrohr aufweist, dass zwischen dem Sammelrohr und dem Leitungssystem eine erstes Druckabbau-Element angeordnet ist, und dass vom Sammelrohr eine Druckleitung zur Flüssigkeitsbevorratung abzweigt, welche ein zweites Druckabbau-Element enthält.
Eine erste bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass die Zumischung von Löschflüssigkeit unter Bildung einer Zweiphasenströmung im Leitungssystem und in der mindestens einen Düse erfolgt.
Eine zweite bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass Flüssigkeitsbevorratung mindestens einen Flüssigkeitsbehälter mit Löschflüssigkeit und eine Löschflüssigkeits-Leitung von der Flüssigkeitsbevorratung zu dem genannten Leitungssystem enthält.
Eine dritte bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass zur Zumischung von Löschflüssigkeit über das Sammelrohr und das zweite Druckabbau-Element der Kopfraum des mindestens einen Flüssigkeitsbehälters mit Löschgas überlagert und dadurch Löschflüssigkeit aus dem mindestens einen Flüssigkeitsbehälter in das Leitungssystem gepresst und in diesem zusammen mit dem Löschgas der mindestens einen Düse zugeführt wird.
Eine weitere bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass die mindestens eine Düse als Zweistoffdüse wirkt und gleichzeitig mit dem Löschgas Löschflüssigkeit versprüht.
Im folgenden wird die Erfindung anhand eines in der einzigen Zeichnung dargestellten Ausführungsbeispiels näher erläutert; dieses Ausführungsbeispiel zeigt eine schematische Darstellung einer erfindungsgemässen Löschanlage.The invention relates to an extinguishing system for fire extinguishing with a quenching gas, with a compressed gas storage, at least one pressure vessel for the quenching gas, at least one gas outlet nozzle and a conduit system containing gas extinguishing system with which the flame area an extinguishing gas supplied and thereby the atmospheric oxygen to a value below Extinguishing concentration is displaced, and with a gas extinguishing system supplementing and a liquid storage containing system for the addition of extinguishing liquid in the line system.
In an extinguishing system of this type described in WO-A-95/24274, the extinguishing gas is supplied to the extinguishing liquid and a mixing space, wherein valves are provided in the respective lines. By the invention, this extinguishing system is to be improved so that the delivery pressure is kept as constant as possible during the deletion.
This object is achieved according to the invention in that the pressurized gas reservoir has a plurality of pressurized gas containers and a collecting pipe arranged between them and the line system, that a first pressure reduction element is arranged between the collecting pipe and the line system, and that a pressure line for liquid supply branches off from the collecting pipe contains second depressurizing element.
A first preferred embodiment of the extinguishing system according to the invention is characterized in that the admixing of extinguishing liquid takes place with the formation of a two-phase flow in the line system and in the at least one nozzle.
A second preferred embodiment of the extinguishing system according to the invention is characterized in that the liquid reservoir contains at least one liquid container with extinguishing liquid and an extinguishing liquid pipe from the liquid reservoir to the said pipe system.
A third preferred embodiment of the extinguishing system according to the invention is characterized in that, for admixing extinguishing liquid via the collecting tube and the second pressure-reducing element, the head space of the at least one liquid container is superimposed with extinguishing gas and thereby extinguishing liquid is pressed out of the at least one liquid container into the conduit system and together thereinto is supplied with the extinguishing gas of the at least one nozzle.
A further preferred embodiment of the extinguishing system according to the invention is characterized in that the at least one nozzle acts as a two-substance nozzle and simultaneously sprays extinguishing liquid with the extinguishing gas.
In the following the invention will be explained in more detail with reference to an embodiment shown in the single drawing; This embodiment shows a schematic representation of an inventive extinguishing system.

Die Löschanlage besteht darstellungsgemäss aus einem Leitungssystem 1 mit Düsen 2, die als Zweistoffdüsen zum gleichzeitigen Versprühen von Löschgas und Löschflüssigkeit vorgesehen sind. Das Löschgas, beispielsweise ein Inertgas, ist in einer Druckgasbevorratung 3 mit mehreren je ein Hochdruckventil 4 aufweisenden Druckbehältern 5. Bei Verwendung nur eines Druckbehälters 5, ist dieser direkt an das Leitungssystem 1 angeschlossen, bei Verwendung mehrerer Druckbehälter 5 ist zwischen diesen und dem Leitungssystem 1 ein Sammelrohr 6 vorgesehen. Das Sammelrohr 6 ist mit dem Leitungssystem 1 über eine erste Gasdrossel 7 verbunden, durch welche der Förderdruck im Leitungssystem 1 auf einen optimalen Düsendruck gedrosselt wird. Mit dem Bezugszeichen 8 ist eine Einrichtung zum Auslösen der Hochdruckventile 4 bezeichnet. Diese kann von Hand betätigbar oder von einer Brandmeldeeinrichtung auslösbar sein.
Durch die Anordnung der ersten Gasdrossel 7 wird das Phänomen der kritischen Strömung kompressibler Medien durch Drosseln ausgenützt, um den Förderdruck während des Löschens möglichst konstant zu halten. Der Förderdruck ändert sich nur langsam und garantiert während der massgeblichen Löschungs-/Flutungsphase einen optimalen Düsendruck. Die durch die Drossel 7 bewirkte Druckreduktion führt dazu, dass beim Öffnen der Ventile 4 im Leitungssystem 1 und an den Düsen 2 kein gefährlicher Wasserschlag auftritt. Ausserdem können für das
Leitungssystem 1 Materialien verwendet werden, welche keine Hochdruck-Qualität aufzuweisen brauchen.
Der bisher beschriebene Teil der erfindungsgemässen Löschanlage entspricht einer bekannten Gaslöschanlage. Diese ist nun darstellungsgemäss mit einer Wassersprühanlage gekoppelt, welche im wesentlichen aus einer Wasserbevorratung 9 mit mindestens einem Wasserbehälter 10 und einem Tauchrohr 11 pro Wasserbehälter 10 sowie aus einer Verbindungsleitung 12 von dem Tauchrohr oder den Tauchrohren 11 zum Leitungssystem 1 besteht. Vom Sammelrohr 6 zweigt vor der ersten Gasdrossel 7 eine Druckleitung 13 ab, die über eine zweite Gasdrossel 14 zu dem mindestens einen Wasserbehälter 10 geführt ist und in dessen Kopfraum mündet. Durch die zweite Gasdrossel 14 wird der Gasdruck aus dem Sammelrohr 6 so reduziert, dass er auf den Wirkdruck der Gasströmung im Leitungssystem 1 nach der ersten Gasdrossel 7 selbstregelnd eingestellt ist.
Die Ausdrücke Wassersprühanlage, Wasserbevorratung und Wasserbehälter sind nicht einschränkend zu verstehen, sondern stehen allgemein für "Löschflüssigkeit". So kann beispielsweise an Stelle von Wasser Heptafluoropropan verwendet werden.
Bei einer Flutung wird das Löschgas der mindestens einen Düse 2 über das Leitungssystem 1 zugeführt und im Schutzbereich verteilt. Gleichzeitig wird vom Sammelrohr 6 über die zweite Gasdrossel 14 der Kopfraum der Wasserbehälter 10 mit Löschgas überlagert und dadurch Wasser aus den Wasserbehältern 10 in die Leitung 12 und damit in das Leitungssystem 1 gepresst. Im Leitungssystem 1 strömt somit ein Wasser-Gas-Gemisch zu den Düsen 2, aus denen gleichzeitig Löschgas und ein kleiner Volumenanteil Wasser versprüht wird. Dadurch erfolgt einerseits die übliche Flutung mit Löschgas und es bildet sich andererseits ein Wasser-Sprühnebel, der die Kühlung des gefluteten Schutzbereichs übernimmt, so dass die Gefahr, dass in der Umgebungsluft des Brandherdes die Oxidationsreaktion wieder startet, sehr stark reduziert und praktisch ausgeschlossen ist.The extinguishing system consists according to the representation of a line system 1 with nozzles 2, which are provided as two-fluid nozzles for simultaneous spraying of quenching gas and extinguishing liquid. The extinguishing gas, for example an inert gas, is in a compressed gas storage 3 with several pressure vessels 5 each having a high pressure valve 5. When using only one pressure vessel 5, this is connected directly to the line system 1, when using multiple pressure vessel 5 is between them and the line system. 1 a manifold 6 is provided. The collecting pipe 6 is connected to the pipe system 1 via a first gas throttle 7, by means of which the delivery pressure in the pipe system 1 is throttled to an optimum nozzle pressure. The reference numeral 8 denotes a device for triggering the high-pressure valves 4. This can be actuated by hand or be triggered by a fire alarm device.
The arrangement of the first gas throttle 7 exploits the phenomenon of the critical flow of compressible media by throttling in order to keep the delivery pressure as constant as possible during the deletion. The delivery pressure changes only slowly and guarantees optimal nozzle pressure during the decisive deletion / flooding phase. The pressure reduction caused by the throttle 7 means that when opening the valves 4 in the line system 1 and the nozzles 2 no dangerous water hammer occurs. In addition, for the
Line system 1 materials are used, which need not have high-pressure quality.
The previously described part of the inventive extinguishing system corresponds to a known gas extinguishing system. This is now according to the representation coupled with a Wassersprühanlage consisting essentially of a water storage 9 with at least one water tank 10 and a dip tube 11 per water tank 10 and a connecting line 12 of the dip tube or the dip tubes 11 to the line system 1. From the manifold 6 branches off before the first throttle valve 7 from a pressure line 13, which is guided via a second throttle valve 14 to the at least one water tank 10 and opens into the headspace. By the second throttle valve 14, the gas pressure from the manifold 6 is reduced so that it is adjusted to the differential pressure of the gas flow in the piping system 1 after the first throttle valve 7 is self-regulating.
The terms water spray system, water storage and water tank are not limiting, but are generally for "extinguishing liquid". For example, instead of water, heptafluoropropane can be used.
During a flooding, the extinguishing gas is supplied to the at least one nozzle 2 via the line system 1 and distributed in the protected area. At the same time, the headspace of the water tank 10 is superimposed with quenching gas from the manifold 6 via the second gas throttle 14 and thereby pressed water from the water tanks 10 into the conduit 12 and thus into the conduit system 1. In the conduit system 1 thus flows a water-gas mixture to the nozzles 2, from which at the same extinguishing gas and a small volume fraction of water is sprayed. As a result, on the one hand, the usual flooding with extinguishing gas and on the other hand forms a water spray, which takes over the cooling of the flooded protection area, so that the risk that the oxidation reaction starts again in the ambient air of the fire, is greatly reduced and practically excluded.

Claims (5)

  1. Extinguishing apparatus for fire extinguishing with an extinguishing gas, having a gas extinguishing apparatus containing a compressed gas reservoir (3), at least one pressure container (5) for the extinguishing gas, at least one gas outlet nozzle (2) and a pipe system (1), by which an extinguishing gas is delivered to the flame region and the atmospheric oxygen is thereby reduced to a value below the extinguishing concentration, and having an apparatus supplementing the gas extinguishing apparatus and containing a liquid reservoir (9) for admixing extinguishing liquid into the pipe system (1), characterized in that the compressed gas reservoir (3) comprises a plurality of compressed gas containers (5) and a manifold tube (6) arranged between them and the pipe system (1), in that a first gas throttle (7) is arranged between the manifold tube (6) and the pipe system (1), and in that a pressure pipe (13) which contains a second gas throttle (14) branches off from the manifold tube (6) to the liquid reservoir (9).
  2. Extinguishing apparatus according to Claim 1, characterized in that the admixture of extinguishing liquid is carried out with the formation of a two-phase flow in the pipe system (1) and in the at least one nozzle (2).
  3. Extinguishing apparatus according to Claim 2, characterized in that the liquid reservoir (9) contains at least one liquid container (10) with extinguishing liquid, and an extinguishing liquid pipe (12) from the liquid reservoir (9) to the said pipe system (1).
  4. Extinguishing apparatus according to Claim 3, characterized in that the headspace of the at least one liquid container (10) is filled with extinguishing gas for the admixture of extinguishing liquid via the manifold tube (6) and the second pressure-reducing element (14), and extinguishing liquid is thereby expelled from the at least one liquid container (10) into the pipe system (1) and delivered therein together with the extinguishing gas to the at least one nozzle (2).
  5. Extinguishing apparatus according to Claim 4, characterized in that the at least one nozzle (2) acts as a two-phase nozzle and simultaneously sprays extinguishing liquid with the extinguishing gas.
EP01122164A 2001-09-15 2001-09-15 Method and device for fire fighting Expired - Lifetime EP1293230B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT01122164T ATE346659T1 (en) 2001-09-15 2001-09-15 FIRE EXTINGUISHING METHOD AND EXTINGUISHING SYSTEM
DK01122164T DK1293230T3 (en) 2001-09-15 2001-09-15 Procedure for fire fighting and extinguishing systems
DE50111557T DE50111557D1 (en) 2001-09-15 2001-09-15 Process for fire extinguishing and extinguishing system
ES01122164T ES2277878T3 (en) 2001-09-15 2001-09-15 PROCEDURE FOR FIRE EXTINGUISHING AND EXTINGUISHING INSTALLATION.
EP01122164A EP1293230B1 (en) 2001-09-15 2001-09-15 Method and device for fire fighting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01122164A EP1293230B1 (en) 2001-09-15 2001-09-15 Method and device for fire fighting

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EP1293230A1 EP1293230A1 (en) 2003-03-19
EP1293230B1 true EP1293230B1 (en) 2006-11-29

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EP01122164A Expired - Lifetime EP1293230B1 (en) 2001-09-15 2001-09-15 Method and device for fire fighting

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Publication number Priority date Publication date Assignee Title
GB2386835B (en) 2002-03-28 2005-04-27 Kidde Plc Fire and explosion suppression
ES2351888T3 (en) * 2008-10-07 2011-02-11 Amrona Ag INSTALLATION OF FIRE EXTINGUISHING BY GAS INERTE TO REDUCE THE RISK AND EXTINGUISH FIRE IN A PROTECTED PREMISES.
EP2873443B1 (en) * 2013-11-13 2016-11-23 Apparatebau Gauting GmbH Fire protection equipment and method for extinguishing a fire
US10058722B2 (en) 2015-02-18 2018-08-28 Apparatebau Gauting Gmbh Fire protection device and method for fire fighting

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GB875267A (en) * 1957-09-02 1961-08-16 Automatiskt Brandalarm Ab Improvements in or relating to automatic fire-extinguishing installations
US3199600A (en) * 1962-04-17 1965-08-10 Jacobs Alan Fog-projecting fire extinguisher construction
RU2074544C1 (en) * 1994-03-10 1997-02-27 Владимир Семенович Терпигорьев METHOD FOR FIRE FIGHTING A GAS-LIQUID MIXTURE AND A GAS-LIQUID NOZZLE FOR ITS IMPLEMENTATION
AU2606400A (en) * 1999-01-11 2000-08-01 New World Technologies Corp. Fire suppression apparatus and method

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DK1293230T3 (en) 2007-03-12
ATE346659T1 (en) 2006-12-15
ES2277878T3 (en) 2007-08-01
EP1293230A1 (en) 2003-03-19
DE50111557D1 (en) 2007-01-11

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