EP1293230A1 - Verfahren zur Brandlöschung und Löschanlage - Google Patents
Verfahren zur Brandlöschung und Löschanlage Download PDFInfo
- 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
- Authority
- 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
Links
- 238000000034 method Methods 0.000 title claims description 15
- 239000007789 gas Substances 0.000 claims abstract description 65
- 239000007788 liquid Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000003595 mist Substances 0.000 claims abstract description 5
- 238000009736 wetting Methods 0.000 claims abstract description 4
- 230000005514 two-phase flow Effects 0.000 claims abstract description 3
- 238000010791 quenching Methods 0.000 claims description 8
- 230000000171 quenching effect Effects 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000012080 ambient air Substances 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000012217 deletion Methods 0.000 description 5
- 230000037430 deletion Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- 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.
Landscapes
- 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)
- Nozzles (AREA)
- Fire-Extinguishing Compositions (AREA)
- Alarm Systems (AREA)
Abstract
Description
- Kühlung des Brandstoffes unter die Oxidationstemperatur
- Sauerstoffverarmung in der Oxidationszone
- Abgrenzung der Sauerstoffzufuhr zur Reaktionszone.
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.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass als Löschflüssigkeit Wasser verwendet wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das versprühte Gemisch aus Löschgas und Löschflüssigkeit nur einen kleinen Volumenanteil an Löschflüssigkeit aufweist.
- 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.
- 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.
- 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.
- 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.
- 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.
- Löschanlage nach Anspruch 8, dadurch gekennzeichnet, dass die mindestens eine Düse (2) als Zweistoffdüse wirkt und gleichzeitig mit dem Löschgas Löschflüssigkeit versprüht.
- 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.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK01122164T DK1293230T3 (da) | 2001-09-15 | 2001-09-15 | Fremgangsmåde til brandslukning og slukningsanlæg |
DE50111557T DE50111557D1 (de) | 2001-09-15 | 2001-09-15 | Verfahren zur Brandlöschung und Löschanlage |
AT01122164T ATE346659T1 (de) | 2001-09-15 | 2001-09-15 | Verfahren zur brandlöschung und löschanlage |
ES01122164T ES2277878T3 (es) | 2001-09-15 | 2001-09-15 | Procedimiento para la extincion de incendios e instalacion de extincion. |
EP01122164A EP1293230B1 (de) | 2001-09-15 | 2001-09-15 | Verfahren zur Brandlöschung und Löschanlage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01122164A EP1293230B1 (de) | 2001-09-15 | 2001-09-15 | Verfahren zur Brandlöschung und Löschanlage |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1293230A1 true EP1293230A1 (de) | 2003-03-19 |
EP1293230B1 EP1293230B1 (de) | 2006-11-29 |
Family
ID=8178641
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01122164A Expired - Lifetime EP1293230B1 (de) | 2001-09-15 | 2001-09-15 | Verfahren zur Brandlöschung und Löschanlage |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1293230B1 (de) |
AT (1) | ATE346659T1 (de) |
DE (1) | DE50111557D1 (de) |
DK (1) | DK1293230T3 (de) |
ES (1) | ES2277878T3 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010040771A1 (de) * | 2008-10-07 | 2010-04-15 | Amrona Ag | Inertgasfeuerlöschanlage zur minderung des risikos und zum löschen von bränden in einem schutzraum |
US8662192B2 (en) | 2002-03-28 | 2014-03-04 | Kidde Ip Holding Limited | Fire and explosion suppression |
EP2873443A3 (de) * | 2013-11-13 | 2016-03-09 | Apparatebau Gauting GmbH | Brandschutzeinrichtung und Verfahren zur Brandbekämpfung |
US10058722B2 (en) | 2015-02-18 | 2018-08-28 | Apparatebau Gauting Gmbh | Fire protection device and method for fire fighting |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
-
2001
- 2001-09-15 DE DE50111557T patent/DE50111557D1/de not_active Expired - Lifetime
- 2001-09-15 DK DK01122164T patent/DK1293230T3/da active
- 2001-09-15 EP EP01122164A patent/EP1293230B1/de not_active Expired - Lifetime
- 2001-09-15 AT AT01122164T patent/ATE346659T1/de active
- 2001-09-15 ES ES01122164T patent/ES2277878T3/es not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Cited By (8)
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 (de) * | 2008-10-07 | 2010-04-15 | Amrona Ag | Inertgasfeuerlöschanlage zur minderung des risikos und zum löschen von bränden in einem schutzraum |
EP2186546A1 (de) * | 2008-10-07 | 2010-05-19 | Amrona AG | Inertgasfeuerlöschanlage zur Minderung des Risikos und zum Löschen von Bränden in einem Schutzraum |
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 (ru) * | 2008-10-07 | 2014-02-10 | Амрона Аг | Система пожаротушения инертным газом для снижения опасности возгорания и тушения пожара в защищенном помещении |
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 (de) * | 2013-11-13 | 2016-03-09 | Apparatebau Gauting GmbH | Brandschutzeinrichtung und Verfahren zur Brandbekämpfung |
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 |
---|---|
DE50111557D1 (de) | 2007-01-11 |
ATE346659T1 (de) | 2006-12-15 |
EP1293230B1 (de) | 2006-11-29 |
DK1293230T3 (da) | 2007-03-12 |
ES2277878T3 (es) | 2007-08-01 |
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