EP1293230A1 - Method and device for fire fighting - Google Patents

Method and device for fire fighting Download PDF

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Publication number
EP1293230A1
EP1293230A1 EP01122164A EP01122164A EP1293230A1 EP 1293230 A1 EP1293230 A1 EP 1293230A1 EP 01122164 A EP01122164 A EP 01122164A EP 01122164 A EP01122164 A EP 01122164A EP 1293230 A1 EP1293230 A1 EP 1293230A1
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EP
European Patent Office
Prior art keywords
extinguishing
gas
liquid
pressure
nozzle
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
EP01122164A
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German (de)
French (fr)
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EP1293230B1 (en
Inventor
Bruno Dr. Covelli
Markus Dr. Müller
Patrick Fernandes
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.)
Siemens Schweiz AG
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Siemens Building Technologies AG
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Publication date
Application filed by Siemens Building Technologies AG filed Critical Siemens Building Technologies AG
Priority to ES01122164T priority Critical patent/ES2277878T3/en
Priority to AT01122164T priority patent/ATE346659T1/en
Priority to DK01122164T priority patent/DK1293230T3/en
Priority to EP01122164A priority patent/EP1293230B1/en
Priority to DE50111557T priority patent/DE50111557D1/en
Publication of EP1293230A1 publication Critical patent/EP1293230A1/en
Application granted granted Critical
Publication of EP1293230B1 publication Critical patent/EP1293230B1/en
Anticipated expiration legal-status Critical
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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 relates to a method for fire extinguishing with an extinguishing gas, in which supplied the flame area an extinguishing gas and thereby the atmospheric oxygen to a Value is displaced 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, is a complete Deletion not always possible.
  • New extinguishing techniques use water mist or Spray mist whose effect in the protection of rooms similar to that of conventional sprinkler or Sprühflutanlagen is.
  • the fire is indeed dominated but not necessarily deleted because 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 by international Covered by the guidelines and there is no basis for the interpretation of such Extinguishing systems for a safe extinguishing of all fire sizes in a protected area.
  • the oxygen depletion in the oxidation zone is carried out with inert or chemical quenching gases achieved by mixing the supply air to the fire with the extinguishing gas, the oxygen content is diluted in the reaction zone so that the oxidation reaction stops.
  • inert or chemical quenching gases achieved by mixing the supply air to the fire with the extinguishing gas, the oxygen content is diluted in the reaction zone so that the oxidation reaction stops.
  • Application becomes complete with extinguishing gases within a few seconds Deletion achieved. Since the fire is not cooled, there is a risk that when the extinguishing concentration in the ambient air of the fire decreases, the oxidation reaction starts again. For this reason, the extinguishing gas concentration in the environment must be Keep the fire for several minutes, resulting in high consumption Extinguishing gas and appropriate means for storing these extinguishing gas amounts means.
  • the delimitation of the oxygen supply to the reaction zone is usually done with foam extinguishing systems. Because of the consequential damage and the demanding application technology the foam extinguishing technology is no longer preferred today. There are also foam extinguishing systems not suitable for combating many incipient fires.
  • the invention will now be the extinguishing method with quenching gases and the corresponding Extinguishing systems are improved so that a renewed start of the oxidation reaction after a Extinguishing with inert gas if the extinguishing concentration in the ambient air decreases Fire is prevented as possible.
  • the extinguishing method according to the invention thus combines the advantages of gas quenching with the Cooling effect of a water spray system, whereby the additional cooling and wetting of the Fire environment after-ignition of the fire with decrease of the extinguishing gas concentration after flooding is sustainably prevented.
  • the extinguishing gas concentration needs after the flooding is no longer as long to maintain as pure gas extinguishing.
  • relatively complicated technical means are required.
  • a first preferred embodiment of the method according to the invention is characterized in that that water is used as extinguishing liquid.
  • a second preferred embodiment of the method according to the invention is characterized in that that the sprayed mixture of extinguishing gas and extinguishing liquid only a small Has volume fraction of extinguishing liquid.
  • the invention further relates to an extinguishing system for carrying out said method, with a compressed gas storage with at least one pressure vessel with quenching gas, at least a Gasaustrittsdüse and a conduit system containing gas extinguishing system.
  • the extinguishing system according to the invention is characterized in that the gas extinguishing system is supplemented by a system for the addition of extinguishing liquid in the piping system.
  • a first preferred embodiment of the extinguishing system according to the invention is characterized in that that the admixture of extinguishing liquid to form a two-phase flow takes place in the conduit 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 system for admixing extinguishing liquid contains a liquid with at least one liquid container with extinguishing liquid, an extinguishing liquid line from the liquid storage to the said piping system and a Contains pressure line between the piping system and the liquid reservoir.
  • a third preferred embodiment of the extinguishing system according to the invention is characterized in that that the compressed gas storage several compressed gas tanks and an intermediate This and the conduit system provided collecting tube, that between the Collecting tube and the conduit system, a first pressure-reducing element is arranged, and that the pressure line branches off from the manifold and contains a second pressure reduction element.
  • a fourth preferred embodiment of the extinguishing system according to the invention is characterized in that that at a flooding, wherein the at least one gas outlet nozzle Extinguishing gas is supplied and distributed in the protected area, via the manifold and the second Pressure reduction element, the headspace of the at least one liquid container with quenching gas superimposed and thereby extinguishing liquid from the at least one liquid container in the Pressed line system and in this together with the extinguishing gas of at least one Nozzle is supplied.
  • a further preferred embodiment of the extinguishing system according to the invention is characterized characterized in that the at least one nozzle acts as a two-fluid nozzle and simultaneously with the extinguishing gas sprayed extinguishing liquid.
  • the extinguishing system consists sacredsgemäss from a line system 1 with nozzles 2, as Dual-fluid nozzles for simultaneous spraying of extinguishing gas and extinguishing liquid provided are.
  • the quenching gas for example an inert gas, is in a pressurized gas reservoir 3 with several each one high pressure valve 4 having pressure vessels 5.
  • a collecting pipe 6 is provided between these and the conduit system 1.
  • the collecting pipe 6 is connected to the line system 1 via a first gas throttle 7, through which throttled the delivery pressure in the pipe system 1 to an optimal nozzle pressure becomes.
  • the reference numeral 8 is a device for triggering the high-pressure valves 4 bezeic-net. This can be actuated by hand or triggered by a fire alarm device be.
  • the arrangement of the first gas throttle 7 becomes the phenomenon of the critical flow Compressible media exploited by throttling to the discharge pressure during extinguishing keep as constant as possible.
  • the delivery pressure changes only slowly and guarantees during the decisive deletion / flooding phase an optimal nozzle pressure.
  • the by the Throttle 7 caused pressure reduction causes when opening the valves 4 in the pipe system 1 and at the nozzles 2 no dangerous water hammer occurs.
  • the Line system 1 materials are used, which have no high-pressure quality need.
  • a water spray system which essentially consists of a water reservoir 9 with at least one water tank 10 and a dip tube 11 per water tank 10 and from a connecting line 12 of the dip tube or the dip tubes 11 to the line system 1 consists.
  • a pressure line 13 which via a second gas throttle 14th to the at least one water tank 10 is guided and opens into the headspace.
  • the second gas throttle 14 the gas pressure from the manifold 6 is reduced so that he on the differential pressure of the gas flow in the piping system 1 after the first gas throttle 7sregelnd is set.
  • water spray system water storage and water tank are not restrictive but generally stand for “extinguishing liquid”. So, for example instead of water, heptafluoropropane can be used.
  • the extinguishing gas of the at least one nozzle 2 via the line system. 1 fed and distributed in the protected area.
  • the manifold 6 via the second Throttle 14 of the headspace of the water tank 10 is superimposed with quenching gas and thereby Water from the water tanks 10 in the line 12 and thus pressed into the line system 1.
  • the conduit system 1 thus flows a water-gas mixture to the nozzles 2, from which simultaneously extinguishing gas and a small volume of water is sprayed.

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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)
  • Alarm Systems (AREA)
  • Nozzles (AREA)
  • Fire-Extinguishing Compositions (AREA)

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 betrifft ein Verfahren zur 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 relates to a method for fire extinguishing with an extinguishing gas, in which supplied the flame area an extinguishing gas and thereby the atmospheric oxygen to a Value is displaced 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 internationale 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, is a complete Deletion not always possible. New extinguishing techniques use water mist or Spray mist whose effect in the protection of rooms similar to that of conventional sprinkler or Sprühflutanlagen is. The fire is indeed dominated but not necessarily deleted because a deletion occurs only when the fire evaporates so much water that the oxygen concentration drops to extinguishing concentration. Moreover, this method of extinguishing is not by international Covered by the guidelines and there is no basis for the interpretation 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 carried out with inert or chemical quenching gases achieved by mixing the supply air to the fire with the extinguishing gas, the oxygen content is diluted in the reaction zone so that the oxidation reaction stops. In accordance with regulations Application becomes complete with extinguishing gases within a few seconds Deletion achieved. Since the fire is not cooled, there is a risk that when the extinguishing concentration in the ambient air of the fire decreases, the oxidation reaction starts again. For this reason, the extinguishing gas concentration in the environment must be Keep the fire for several minutes, resulting in high consumption Extinguishing gas and appropriate means for storing these extinguishing gas amounts means.

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 consequential damage and the demanding application technology the foam extinguishing technology is no longer preferred today. There are also foam extinguishing systems not suitable for combating many incipient fires.

Durch die Erfindung sollen nun die Löschverfahren mit Löschgasen und die entsprechenden Löschanlagen so verbessert werden, dass ein erneuter Start der Oxidationsreaktion nach einer Löschung mit inertem Gas bei Abnahme der Löschkonzentration in der Umgebungsluft des Brandherdes möglichst verhindert wird.The invention will now be the extinguishing method with quenching gases and the corresponding Extinguishing systems are improved so that a renewed start of the oxidation reaction after a Extinguishing with inert gas if the extinguishing concentration in the ambient air decreases Fire is prevented as possible.

Diese Aufgabe wird für die Löschverfahren erfindungsgemäss dadurch gelöst, dass dem Löschgas zusätzlich eine Löschflüssigkeit beigemischt und zusammen mit dem Löschgas versprüht wird, so dass ein den Schutzbereich benetzender und kühlender feiner Flüssigkeitsnebel gebildet wird.This object is achieved according to the invention for the deletion method that the extinguishing gas additionally admixed with an extinguishing liquid and sprayed together with the extinguishing gas is formed, so that the protective area wetting and cooling fine liquid mist becomes.

Das erfindungsgemässe Löschverfahren verbindet also die Vorteile einer Gaslöschung mit dem Kühleffekt einer Wassersprühanlage, wobei durch die zusätzliche Kühlung und Benetzung der Brandumgebung ein Nachzünden des Feuers bei Abnahme der Löschgaskonzentration nach erfolgter Flutung nachhaltig verhindert wird. Dadurch braucht die Löschgaskonzentration nach der Flutung nicht mehr so lange wie bei reiner Gaslöschung aufrecht erhalten zu werden. In diesem Zusammenhang sei noch darauf hingewiesen, dass für die Aufrechterhaltung der Löschgaskonzentration relativ aufwendige technische Mittel erforderlich sind.The extinguishing method according to the invention thus combines the advantages of gas quenching with the Cooling effect of a water spray system, whereby the additional cooling and wetting of the Fire environment after-ignition of the fire with decrease of the extinguishing gas concentration after flooding is sustainably prevented. As a result, the extinguishing gas concentration needs after the flooding is no longer as long to maintain as pure gas extinguishing. In It should be noted that, in order to maintain the Extinguishing gas concentration relatively complicated technical means are required.

Eine erste bevorzugte Ausführungsform des erfindungsgemässen Verfahrens ist dadurch gekennzeichnet, dass als Löschflüssigkeit Wasser verwendet wird.A first preferred embodiment of the method according to the invention is characterized in that that water is used as extinguishing liquid.

Eine zweite bevorzugte Ausführungsform des erfindungsgemässen Verfahrens ist dadurch gekennzeichnet, dass das versprühte Gemisch aus Löschgas und Löschflüssigkeit nur einen kleinen Volumenanteil an Löschflüssigkeit aufweist.A second preferred embodiment of the method according to the invention is characterized in that that the sprayed mixture of extinguishing gas and extinguishing liquid only a small Has volume fraction of extinguishing liquid.

Die Erfindung betrifft weiter eine Löschanlage zur Durchführung des genannten Verfahrens, mit einer eine Druckgasbevorratung mit mindestens einem Druckbehälter mit Löschgas, mindestens eine Gasaustrittsdüse und ein Leitungssystem enthaltenden Gaslösch-Anlage.The invention further relates to an extinguishing system for carrying out said method, with a compressed gas storage with at least one pressure vessel with quenching gas, at least a Gasaustrittsdüse and a conduit system containing gas extinguishing system.

Die erfindungsgemässe Löschanlage ist dadurch gekennzeichnet, dass die Gaslösch-Anlage durch eine Anlage zur Zumischung von Löschflüssigkeit in das Leitungssystem ergänzt ist.The extinguishing system according to the invention is characterized in that the gas extinguishing system is supplemented by a system for the addition of extinguishing liquid in the piping system.

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.A first preferred embodiment of the extinguishing system according to the invention is characterized in that that the admixture of extinguishing liquid to form a two-phase flow takes place in the conduit system and in the at least one nozzle.

Eine zweite bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass die Anlage zur Zumischung von Löschflüssigkeit eine Flüssigkeitsbevorratung mit mindestens einem Flüssigkeitsbehälter mit Löschflüssigkeit, eine Löschflüssigkeits-Leitung von der Flüssigkeitsbevorratung zu dem genannten Leitungssystem und eine Druckleitung zwischen dem Leitungssystem und der Flüssigkeitsbevorratung enthält. A second preferred embodiment of the extinguishing system according to the invention is characterized in that the system for admixing extinguishing liquid contains a liquid with at least one liquid container with extinguishing liquid, an extinguishing liquid line from the liquid storage to the said piping system and a Contains pressure line between the piping system and the liquid reservoir.

Eine dritte bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass die Druckgasbevorratung mehrere Druckgasbehälter sowie ein zwischen diesen und dem Leitungssystem vorgesehenes Sammelrohr aufweist, dass zwischen dem Sammelrohr und dem Leitungssystem ein erstes Druckabbau-Element angeordnet ist, und dass die Druckleitung vom Sammelrohr abzweigt und ein zweites Druckabbau-Element enthält.A third preferred embodiment of the extinguishing system according to the invention is characterized in that that the compressed gas storage several compressed gas tanks and an intermediate This and the conduit system provided collecting tube, that between the Collecting tube and the conduit system, a first pressure-reducing element is arranged, and that the pressure line branches off from the manifold and contains a second pressure reduction element.

Eine vierte bevorzugte Ausführungsform der erfindungsgemässen Löschanlage ist dadurch gekennzeichnet, dass bei einer Flutung, bei welcher der mindestens einen Gasaustrittsdüse Löschgas zugeführt und im Schutzbereich verteilt wird, 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.A fourth preferred embodiment of the extinguishing system according to the invention is characterized in that that at a flooding, wherein the at least one gas outlet nozzle Extinguishing gas is supplied and distributed in the protected area, via the manifold and the second Pressure reduction element, the headspace of the at least one liquid container with quenching gas superimposed and thereby extinguishing liquid from the at least one liquid container in the Pressed line system and in this together with the extinguishing gas of at least one Nozzle is supplied.

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.A further preferred embodiment of the extinguishing system according to the invention is characterized characterized in that the at least one nozzle acts as a two-fluid nozzle and simultaneously with the extinguishing gas sprayed extinguishing liquid.

Im folgenden wird die Erfindung anhand eines in der einzigen Zeichnung dargestellten Ausführungsbeispiels näher erläutert; dieses Ausführungsbeispiel zeigt eine schematische Darstellung einer erfindungsgemässen Löschanlage.In the following the invention with reference to an embodiment shown in the single drawing explained in more detail; This embodiment shows a schematic representation 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 bezeic-net. Diese kann von Hand betätigbar oder von einer Brandmeldeeinrichtung auslösbar sein.The extinguishing system consists Darstellungsgemäss from a line system 1 with nozzles 2, as Dual-fluid nozzles for simultaneous spraying of extinguishing gas and extinguishing liquid provided are. The quenching gas, for example an inert gas, is in a pressurized gas reservoir 3 with several each one high pressure valve 4 having pressure vessels 5. When using only one pressure vessel 5, this is connected directly to the line system 1, when using multiple Pressure vessel 5, a collecting pipe 6 is provided between these and the conduit system 1. The collecting pipe 6 is connected to the line system 1 via a first gas throttle 7, through which throttled the delivery pressure in the pipe system 1 to an optimal nozzle pressure becomes. The reference numeral 8 is a device for triggering the high-pressure valves 4 bezeic-net. This can be actuated by hand or triggered by a fire alarm device be.

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.The arrangement of the first gas throttle 7 becomes the phenomenon of the critical flow Compressible media exploited by throttling to the discharge pressure during extinguishing keep as constant as possible. The delivery pressure changes only slowly and guarantees during the decisive deletion / flooding phase an optimal nozzle pressure. The by the Throttle 7 caused pressure reduction causes when opening the valves 4 in the pipe system 1 and at the nozzles 2 no dangerous water hammer occurs. In addition, for the Line system 1 materials are used, which have no high-pressure quality need.

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.The previously described part of the inventive extinguishing system corresponds to a known Gas extinguishing system. This is now coupled according to illustration with a water spray system, which essentially consists of a water reservoir 9 with at least one water tank 10 and a dip tube 11 per water tank 10 and from a connecting line 12 of the dip tube or the dip tubes 11 to the line system 1 consists. From the manifold 6 branches off in front of the first throttle valve 7, a pressure line 13, which via a second gas throttle 14th to the at least one water tank 10 is guided and opens into the headspace. By the second gas throttle 14, the gas pressure from the manifold 6 is reduced so that he on the differential pressure of the gas flow in the piping system 1 after the first gas throttle 7 selbstregelnd is set.

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.The terms water spray system, water storage and water tank are not restrictive but generally stand for "extinguishing liquid". So, for example instead of water, heptafluoropropane can be used.

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.During a flooding, the extinguishing gas of the at least one nozzle 2 via the line system. 1 fed and distributed in the protected area. At the same time from the manifold 6 via the second Throttle 14 of the headspace of the water tank 10 is superimposed with quenching gas and thereby Water from the water tanks 10 in the line 12 and thus pressed into the line system 1. In the conduit system 1 thus flows a water-gas mixture to the nozzles 2, from which simultaneously extinguishing gas and a small volume of water is sprayed. This is done 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 danger that in the ambient air of the source of fire restarts the oxidation reaction, greatly reduced and practically excluded.

Claims (10)

Verfahren zur Brandlöschung mit einem Löschgas, bei welchem dem Flammbereich ein Löschgas zugeführt und dadurch der Luftsauerstoff auf einen Wert unterhalb der Löschkonzentration verdrängt wird, dadurch gekennzeichnet, dass dem Löschgas zusätzlich eine Löschflüssigkeit beigemischt und zusammen mit dem Löschgas versprüht wird, so dass ein den Schutzbereich benetzender und kühlender feiner Flüssigkeitsnebel gebildet wird.A method for fire extinguishing with an extinguishing gas, in which the flame area an extinguishing gas supplied and thereby the atmospheric oxygen is displaced to a value below the extinguishing concentration, characterized in that the extinguishing gas additionally admixed with an extinguishing liquid and is sprayed together with the extinguishing gas, so that a protection area wetting and cooling fine liquid mist is formed. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Löschflüssigkeit Wasser verwendet wird.A method according to claim 1, characterized in that water is used as extinguishing liquid. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das versprühte Gemisch aus Löschgas und Löschflüssigkeit nur einen kleinen Volumenanteil an Löschflüssigkeit aufweist.A method according to claim 1 or 2, characterized in that the sprayed mixture of extinguishing gas and extinguishing liquid has only a small volume fraction of extinguishing liquid. Löschanlage zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 3, mit einer eine Druckgasbevorratung (3), mindestens einen Druckbehälter (5) für das Löschgas, mindestens eine Gasaustrittsdüse (2) und ein Leitungssystem (1) enthaltenden Gaslösch-Anlage, dadurch gekennzeichnet, dass die Gaslösch-Anlage durch eine Anlage zur Zumischung von Löschflüssigkeit in das Leitungssystem (1) ergänzt ist.Extinguishing system for carrying out the method according to one of claims 1 to 3, with a compressed gas storage (3), at least one pressure vessel (5) for the extinguishing gas, at least one gas outlet nozzle (2) and a conduit system (1) containing gas extinguishing system, characterized in that the gas extinguishing system is supplemented by a system for adding extinguishing liquid to the line system (1). Löschanlage nach Anspruch 4, dadurch gekennzeichnet, dass die Zumischung von Löschflüssigkeit unter Bildung einer Zweiphasenströmung im Leitungssystem (1) und in der mindestens einen Düse (2) erfolgt.Extinguishing system according to claim 4, characterized in that the admixture of extinguishing liquid to form a two-phase flow in the conduit system (1) and in the at least one nozzle (2). Löschanlage nach Anspruch 5, dadurch gekennzeichnet, dass die Anlage zur Zumischung von Löschflüssigkeit eine Flüssigkeitsbevorratung (9) mit mindestens einem Flüssigkeitsbehälter (10) mit Löschflüssigkeit, eine Löschflüssigkeits-Leitung (12) von der Flüssigkeitsbevorratung (9) zu dem genannten Leitungssystem (1) und eine Druckleitung (13) zwischen dem Leitungssystem und der Flüssigkeitsbevorratung (9) enthält.Extinguishing system according to claim 5, characterized in that the system for admixing extinguishing liquid comprises a liquid reservoir (9) with at least one liquid container (10) with extinguishing liquid, an extinguishing liquid line (12) from the liquid reservoir (9) to said piping system (1). and a pressure line (13) between the conduit system and the liquid reservoir (9). Löschanlage nach Anspruch 6, dadurch gekennzeichnet, dass die Druckgasbevorratung (3) mehrere Druckgasbehälter (5) sowie ein zwischen diesen und dem Leitungssystem (1) angeordnetes Sammelrohr (6) aufweist, dass zwischen dem Sammelrohr (6) und dem Leitungssystem (1) eine erstes Druckabbau-Element (7) angeordnet ist, und dass die Druckleitung (13) vom Sammelrohr (6) abzweigt und ein zweites Druckabbau-Element (14) enthält.Extinguishing system according to claim 6, characterized in that the compressed gas reservoir (3) a plurality of compressed gas tank (5) and between these and the conduit system (1) arranged collecting tube (6) that between the collecting tube (6) and the conduit system (1) a first pressure-reducing element (7) is arranged, and that the pressure line (13) branches off from the collecting tube (6) and contains a second pressure-reducing element (14). Löschanlage nach Anspruch 7, dadurch gekennzeichnet, dass zur Zumischung von Löschflüssigkeit über das Sammelrohr (6) und das zweite Druckabbau-Element (14) der Kopfraum des mindestens einen Flüssigkeitsbehälters (10) mit Löschgas überlagert und dadurch Löschflüssigkeit aus dem mindestens einen Flüssigkeitsbehälter (10) in das Leitungssystem (1) gepresst und in diesem zusammen mit dem Löschgas der mindestens einen Düse (2) zugeführt wird.Extinguishing system according to claim 7, characterized in that for the mixing of extinguishing liquid via the collecting pipe (6) and the second pressure reducing element (14) the head space of the at least one liquid container (10) superimposed with extinguishing gas and thereby extinguishing liquid from the at least one liquid container (10 ) is pressed into the conduit system (1) and supplied therein together with the quenching gas of the at least one nozzle (2). Löschanlage nach Anspruch 8, dadurch gekennzeichnet, dass die mindestens eine Düse (2) als Zweistoffdüse wirkt und gleichzeitig mit dem Löschgas Löschflüssigkeit versprüht.Extinguishing system according to claim 8, characterized in that the at least one nozzle (2) acts as a two-fluid nozzle and simultaneously sprays extinguishing liquid with the extinguishing gas. Löschanlage nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass das zweite Druckabbau-Element (14) so ausgelegt und eingestellt ist, dass der Gasdruck aus dem Sammelrohr (6) so reduziert wird, dass er auf den Wirkdruck der Gasströmung im Leitungssystem (1) nach dem ersten Druckabbau-Element (7) selbstregelnd eingestellt ist.Extinguishing system according to one of claims 7 to 9, characterized in that the second pressure- reducing element (14) is designed and adjusted so that the gas pressure from the manifold (6) is reduced so that it depends on the differential pressure of the gas flow in the pipe system ( 1) is set self-regulating after the first pressure reduction element (7).
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
ES01122164T ES2277878T3 (en) 2001-09-15 2001-09-15 PROCEDURE FOR FIRE EXTINGUISHING AND EXTINGUISHING INSTALLATION.
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
EP01122164A EP1293230B1 (en) 2001-09-15 2001-09-15 Method and device for fire fighting
DE50111557T DE50111557D1 (en) 2001-09-15 2001-09-15 Process for fire extinguishing and extinguishing system

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

Publications (2)

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

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EP (1) EP1293230B1 (en)
AT (1) ATE346659T1 (en)
DE (1) DE50111557D1 (en)
DK (1) DK1293230T3 (en)
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US8662192B2 (en) 2002-03-28 2014-03-04 Kidde Ip Holding Limited Fire and explosion suppression
EP2873443A3 (en) * 2013-11-13 2016-03-09 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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US3199600A (en) * 1962-04-17 1965-08-10 Jacobs Alan Fog-projecting fire extinguisher construction
WO1995024274A1 (en) * 1994-03-10 1995-09-14 Unitor Denmark A/S Method and nozzle for providing a flow with separated gas and liquid portions subjected to an acoustic field
WO2000041769A1 (en) * 1999-01-11 2000-07-20 New World Technologies Corp. Fire suppression apparatus and method

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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
WO1995024274A1 (en) * 1994-03-10 1995-09-14 Unitor Denmark A/S Method and nozzle for providing a flow with separated gas and liquid portions subjected to an acoustic field
WO2000041769A1 (en) * 1999-01-11 2000-07-20 New World Technologies Corp. Fire suppression apparatus and method

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Publication number Priority date Publication date Assignee Title
US8662192B2 (en) 2002-03-28 2014-03-04 Kidde Ip Holding Limited Fire and explosion suppression
WO2010040771A1 (en) * 2008-10-07 2010-04-15 Amrona Ag Inert gas fire extinguisher for reducing the risk and for extinguishing fires in a protected space
EP2186546A1 (en) * 2008-10-07 2010-05-19 Amrona AG Inert gas fire extinguisher for reducing the risk of and extinguishing fires in a protected area
AU2009301140B2 (en) * 2008-10-07 2013-03-28 Amrona Ag Inert gas fire extinguisher for reducing the risk and for extinguishing fires in a protected space
RU2506105C2 (en) * 2008-10-07 2014-02-10 Амрона Аг System of fire extinguishing with inert gas to reduce risk of fire and fire extinguishing in protected room
US9079054B2 (en) 2008-10-07 2015-07-14 Amrona Ag Inert gas fire extinguisher for reducing the risk and for extinguishing fires in a protected space
EP2873443A3 (en) * 2013-11-13 2016-03-09 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

Also Published As

Publication number Publication date
ATE346659T1 (en) 2006-12-15
DE50111557D1 (en) 2007-01-11
ES2277878T3 (en) 2007-08-01
DK1293230T3 (en) 2007-03-12
EP1293230B1 (en) 2006-11-29

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