EP0891208B1 - Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen - Google Patents
Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen Download PDFInfo
- Publication number
- EP0891208B1 EP0891208B1 EP97915442A EP97915442A EP0891208B1 EP 0891208 B1 EP0891208 B1 EP 0891208B1 EP 97915442 A EP97915442 A EP 97915442A EP 97915442 A EP97915442 A EP 97915442A EP 0891208 B1 EP0891208 B1 EP 0891208B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- inert gas
- extinguishing
- liquid
- extinguishing agent
- added
- 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.)
- Expired - Lifetime
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
-
- 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 invention relates to a method and an apparatus for mixing liquid inert gas with a liquid extinguishing agent (such as water) and subsequent atomization for fire fighting. This takes place in stationary - and application in mobile fire extinguishing systems.
- a liquid extinguishing agent such as water
- WO 95/24274 describes a method and an apparatus for atomizing Liquid extinguishing agent with a feed for extinguishing agent, a dispenser for Gas, a reservoir and an admixing unit are known.
- the proposed The process works with a plug flow that only emerges at the nozzle outlet takes on a pulsating character.
- both media point to the Mixing device to the same pressure since the gaseous agent from the Container is used as a blowing agent for the extinguishing agent.
- the use of liquid inert gas is not described.
- the object of the invention was, in the case of stationary spray water extinguishing systems for Extinguishing the amount of liquid extinguishing agent usually required in conventional extinguishing systems is used to reduce.
- inert gas is added to the liquid extinguishing agent in liquid form in front of the nozzle.
- inert gas here does not refer to the state of matter at the time of addition to the liquid extinguishing agent, but the inert gas is added to the liquid extinguishing agent in liquid form.
- Liquid inert gas can be added either by adding it to the extinguishing agent at elevated pressure or by adding the extinguishing agent to it at elevated pressure.
- the liquid extinguishing agent (water) is usually in the network with one Pressure of 8-10 bar performed, regardless of the water supply, such as. B. City water network, tanks, etc.
- the liquid inert gas is fed into the pipeline network at an increased pressure.
- suitable admixing devices and devices for controlling the pressure in the line network such as check valve, shut-off valve, control valve for the media
- Drop sizes and throwing distances can be influenced by different nozzles become. Throwing distances of up to 10 m can be achieved.
- Liquid CO 2 is preferably added to the liquid extinguishing agent water.
- Bubble Flow is generated by adding more inert gas than in solution can go.
- This two-phase bubble flow in the piping system can on the nozzle with simple means an aerosol with the optimal drop size for the Firefighting are generated.
- the advantage here is that the liquid inert gas is in the liquid extinguishing agent high pressure predominantly dissolves and in this way with the drops generated Cause of the fire, since the dynamic process of degassing takes longer than the transportation time. This leads to an improvement in the extinguishing effect because thereby further splitting the drops in flight to the source of the fire with the Advantage that with the fine water mist generated also hidden fire better can be deleted.
- the surface area of the liquid extinguishing agent is considerably enlarged by the formation of microdroplets in the area of the fire, in particular by the segregation of liquid extinguishing agent and inert gas.
- the inert gas e.g. CO 2
- the excess of energy in the fire area is reduced to such an extent that a high extinguishing effect is achieved which cannot be achieved by using microdroplets alone without the addition of preferably liquid inert gas.
- the amount of inert gas added is optimized.
- the optimization can either already take place during the project planning by specifying a maximum amount of CO 2 in relation to the extinguishing object.
- the amount of liquid inert gas added is regulated depending on the concentration in the extinguishing area during the extinguishing in order not to exceed the maximum MAK value of 10,000 ppm or, as is customary in Inergen extinguishing systems ( ⁇ 4% by volume).
- the amount of the added liquid inert gas also regulated according to the course of the fire.
- a device which, in addition to a supply for liquid extinguishing agent and dispensing devices for liquid Extinguishing agent, characterized in that at least one reservoir for liquid Inert gas and at least one mixing unit for mixing liquid Extinguishing agent and liquid inert gas is provided.
- This special admixing unit is preferably placed horizontally or vertically in front of the nozzles in the pipeline network assembled.
- At least one detector for determining the Concentration of the inert gas in the extinguishing area with at least one Evaluation device, and this with at least one control device for control the amount of liquid inert gas associated.
- This detector can be used with the detector to determine the concentration of the Inert gases form a unit in the extinguishing area and in particular as a combined one Measuring device for electromagnetic radiation and according to the principle of Smoke detectors and heat detectors should be designed.
- the opening angles of the dispensing devices for liquid extinguishing agent are adjustable, the opening angle being determined by the admixed amount of liquid inert gas.
- the device according to the invention has a check valve (9).
- the extinguishing water is mixed with the liquid inert gas flowing out of the reservoir (2).
- Suitable shut-off devices and a control valve (8) are arranged between the reservoir (2) and the admixing unit (3).
- the control valve is preferably connected to an evaluation device (7) for a detector (6) for the extinguishing nozzles (5) defining the extinguishing area (4).
- the shut-off devices are e.g. B. opened via a fire alarm system, not shown, and after a delay time, depending on the water supply, the control valve (8) is switched. This circuit can switch the control valve (8) to intermittent or continuous flow in order to clear the way for the liquid inert gas as a pressure increasing and inerting medium.
- the pressure and temperature in the pipe system can be determined by the ratio of the Inert gas and adjusted by the amount of extinguishing agent dispensed per unit of time become.
- the gas dissolves during the residence time in the pipe system and due to the increased pressure in the extinguishing liquid. This increases the volume and thus the pressure in the pipe system.
- the extinguishing agent When the extinguishing agent emerges from the nozzle and on its way to the fire material, it segregates the extinguishing medium into its components with simultaneous aerosol formation liquid extinguishing agent. However, a large proportion of the gas passes without Separation directly into the fire zone.
- the amount of CO 2 released into the extinguishing area (4) remains below the toxicity limit.
- the water initially emerges as a jet when it leaves the pipe system and is broken down into the finest drops only on the flight to the source of the fire, which results in larger throwing distances, or it emerges as the finest drops with a short range.
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)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Description
Bei Gaslöschanlagen, deren Löscheffekt u. a. auf der Absenkung der Sauerstoffkonzentration durch Inertisierung im Löschbereich besteht, ist ein erheblicher Aufwand für die Absicherung, insbesondere bei CO2-Löschanlagen, wegen der Personengefährdung erforderlich. Andere Löschgase, die bisher zum Einsatz kamen, wie z. B. Halon, sind zum Teil aus gesetzlicher Vorschrift nicht mehr einsetzbar. Weitere Löschmittel, wie z. B. Argon, sind relativ teuer.
Die Zugabe von flüssigem Inertgas kann erfolgen, indem entweder dieses mit erhöhtem Druck dem Löschmittel oder das Löschmittel diesem mit erhöhtem Druck zugemischt wird.
Hierdurch werden an den Löschdüsen nicht nur die Wasseraustrittsgeschwindigkeiten, sondern auch die Tropfenverteilung und die Wurfweite erhöht.
Anhand einer schematischen Darstellung eines Ausführungsbeispiels werden das erfindungsgemäße Verfahren und die Vorrichtung näher erläutert.
Das Steuerventil ist bevorzugt mit einer Auswerteeinrichtung (7) für einen Detektor (6) für die den Löschbereich (4) definierenden Löschdüsen (5) verbunden.
Die Absperreinrichtungen werden z. B. über eine nicht dargestellte Brandmeldeanlage geöffnet und nach einer Verzögerungszeit, in Abhängigkeit von der Wasserzuführung, wird das Regelventil (8) geschaltet.
Diese Schaltung kann das Regelventil (8) auf intermittierenden oder auf kontinuierlichen Durchfluß schalten, um den Weg für das flüssige Inertgas als Druckerhöhungs- und Inertisierungsmedium freizugeben.
Im Rohrsystem erfolgt damit eine Volumen- und somit auch Druckerhöhung.
Das Wasser tritt, je nach eingesetzter Düse, beim Verlassen des Rohrsystems vorerst als Strahl aus und zerkleinert sich in feinste Tropfen erst auf dem Flug zum Brandherd, wodurch größere Wurfweiten erzielt werden, bzw. es tritt als feinste Tropfen mit geringer Reichweite aus.
Claims (13)
- Verfahren zur Verdüsung von flüssigem Löschmittel in Löschanlagen, dadurch gekennzeichnet,
daß dem Löschmittel Inertgas in flüssiger Form zur Erzeugung einer Zweiphasen-Blasenströmung, Bubble Flow, vor der Düse zugegeben wird, wobei das Inertgas mit einem gegenüber dem Löschmittel erhöhten Druck eingegeben wird. - Verfahren nach Anspruch 1, dadurch gekennzeichnet,
daß dem Löschmittel als Inertgas CO2 zugegeben wird. - Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet,
daß die Inertgase intermittierend zugegeben werden. - Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet,
daß die zugegebene Inertgasmenge größer ist als jene, die in Lösung mit dem flüssigen Löschmittel geht. - Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet,
daß die in der Rohrleitung strömenden Mittel am Austritt der Rohrleitung derart verdüst werden, daß sie ein Aerosol, Wassernebel, bilden. - Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Menge des zugegebenen flüssigen Inertgases in Abhängigkeit von der Inertgaskonzentration im Löschbereich geregelt wird. - Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet,
daß die Menge des zugegebenen flüssigen Inertgases nach dem Brandverlauf geregelt wird. - Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet,
daß die Verdüsung mittels Löschdüsen mit regelbarem Öffnungswinkel erfolgt und der Öffnungswinkel in Abhängigkeit vom Brandherd und vom Brandverlauf, insbesondere mittels des Druckes an den Löschdüsen, geregelt wird. - Vorrichtung zum Verdüsen von Löschmittel in Löschanlagen mit einer Zufuhr (1) für flüssiges Löschmittel, mit einer Abgabeeinrichtung (5) für das Löschmittel,
dadurch gekennzeichnet, daß wenigstens eine vor der Abgabeeinrichtung (5) angeordnete Zumischeinheit (3) für flüssiges Inertgas und wenigstens ein Reservoir (2) für flüssiges Inertgas vorgesehen sind. - Vorrichtung nach Anspruch 9, dadurch gekennzeichnet.
daß als Zumischeinheit ein Behälter angeordnet ist, in dem das flüssige Inertgas kontinuierlich dem durchströmenden Löschmittel zugegeben wird. - Vorrichtung nach einem der Ansprüche 9 oder 10, dadurch gekennzeichnet,
daß wenigstens ein Detektor (6) zur Bestimmung der Konzentration des Inertgases im Löschbereich (4) mit wenigstens einer Auswerteeinrichtung (7) und diese mit wenigstens einer Regeleinrichtung (8) zur Regelung der Menge des Inertgases verbunden ist. - Vorrichtung nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet,
daß wenigstens ein Detektor zur Bestimmung des Brandverlaufs und zur Steuerung der Löschung angeordnet ist. - Vorrichtung nach einem der Ansprüche 9 bis 12, dadurch gekennzeichnet,
daß die Ausgabeeinrichtungen (5) für flüssiges Löschmittel einstellbare Öffnungswinkel aufweisen und der Öffnungswinkel in Abhängigkeit von der zugemischten flüssigen Inertgasmenge einstellbar ist.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97915442A EP0891208B1 (de) | 1996-03-30 | 1997-03-26 | Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96105159 | 1996-03-30 | ||
EP96105159 | 1996-03-30 | ||
EP96114586A EP0798019A1 (de) | 1996-03-30 | 1996-09-12 | Verfahren und Vorrichtung zur Verdüsung von flüssigem Löschmittel in stationären Löschanlagen |
EP96114586 | 1996-09-12 | ||
PCT/EP1997/001550 WO1997036651A1 (de) | 1996-03-30 | 1997-03-26 | Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen |
EP97915442A EP0891208B1 (de) | 1996-03-30 | 1997-03-26 | Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0891208A1 EP0891208A1 (de) | 1999-01-20 |
EP0891208B1 true EP0891208B1 (de) | 2000-10-18 |
Family
ID=26141841
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96114586A Withdrawn EP0798019A1 (de) | 1996-03-30 | 1996-09-12 | Verfahren und Vorrichtung zur Verdüsung von flüssigem Löschmittel in stationären Löschanlagen |
EP97915442A Expired - Lifetime EP0891208B1 (de) | 1996-03-30 | 1997-03-26 | Verfahren und vorrichtung zur verdüsung von flüssigem löschmittel in stationären löschanlagen |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96114586A Withdrawn EP0798019A1 (de) | 1996-03-30 | 1996-09-12 | Verfahren und Vorrichtung zur Verdüsung von flüssigem Löschmittel in stationären Löschanlagen |
Country Status (12)
Country | Link |
---|---|
US (1) | US6173790B1 (de) |
EP (2) | EP0798019A1 (de) |
JP (1) | JP4031832B2 (de) |
KR (1) | KR20000005148A (de) |
CN (1) | CN1092071C (de) |
AT (1) | ATE196996T1 (de) |
AU (1) | AU722952B2 (de) |
DE (1) | DE59702499D1 (de) |
ES (1) | ES2153188T3 (de) |
NZ (1) | NZ332157A (de) |
PT (1) | PT891208E (de) |
WO (1) | WO1997036651A1 (de) |
Families Citing this family (31)
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RU2131379C1 (ru) * | 1998-02-06 | 1999-06-10 | Научно-исследовательский институт низких температур при Московском государственном авиационном институте - техническом университете | Способ пожаротушения с использованием летательного аппарата и устройство для его осуществления |
EP1078653A1 (de) | 1999-08-24 | 2001-02-28 | Asea Brown Boveri Ag | Vorrichtung zum Einbringen eines Inertgases in ein Löschmittel |
US6942040B1 (en) | 1999-09-20 | 2005-09-13 | Phan Dinh Phuong | Method, chemical and automatic fire extinguishing system using liquified CO2 to regulate the distribution of fire extinguishing agents |
DE60216244T2 (de) * | 2001-03-29 | 2007-05-10 | Kidde IP Holdings Ltd., Colnbrook, Slough | Mittel zum feuerlöschen und zur explosionsunterdrückung |
US20040163825A1 (en) * | 2001-03-29 | 2004-08-26 | Dunster Robert George | Fire and explosion suppression |
KR100441310B1 (ko) * | 2002-02-22 | 2004-07-21 | 주식회사 윈 | 소방용 워트 미스트 장치. |
GB2386835B (en) | 2002-03-28 | 2005-04-27 | Kidde Plc | Fire and explosion suppression |
US7258140B2 (en) * | 2002-10-16 | 2007-08-21 | Richard Acree | Portable pressurized gas supply apparatus for pneumatic equipment |
US20040226301A1 (en) * | 2003-05-14 | 2004-11-18 | Airwars Defense Lp, A Colorado Limited Partnership | Liquid nitrogen enabler |
DE102005023101B4 (de) * | 2005-05-13 | 2013-10-10 | Minimax Gmbh & Co. Kg | Verfahren zum Einbringen eines Inertgases und Anlage zum Inertisieren |
SG128596A1 (en) * | 2005-06-13 | 2007-01-30 | Victaulic Co Of America | High velocity low pressure emitter |
US7810577B2 (en) * | 2005-08-30 | 2010-10-12 | Federal Express Corporation | Fire sensor, fire detection system, fire suppression system, and combinations thereof |
EP1993977A4 (de) * | 2006-02-13 | 2010-01-20 | Halkey Roberts Corp | Vorrichtung und verfahren zur verwendung eines energetischen materials auf tetrazinbasis |
AR062764A1 (es) * | 2006-11-06 | 2008-12-03 | Victaulic Co Of America | Metodo y aparato para secar redes de canerias equipadas con rociadores |
EP2195095A4 (de) * | 2007-09-24 | 2013-12-04 | Utc Fire & Security Corp | Hybrides inertgasfeuerbekämpfungssystem |
KR101269878B1 (ko) * | 2010-07-29 | 2013-06-07 | 충북대학교 산학협력단 | 화학반응을 이용한 미세 물분무 소화시스템 |
US10532237B2 (en) | 2010-08-05 | 2020-01-14 | Victaulic Company | Dual mode agent discharge system with multiple agent discharge capability |
US20150297924A1 (en) * | 2011-10-14 | 2015-10-22 | Utc Fire & Security Corporation | Sprinkler system including a mixing device upstream of a sprinkler |
US10058722B2 (en) * | 2015-02-18 | 2018-08-28 | Apparatebau Gauting Gmbh | Fire protection device and method for fire fighting |
CN106693237A (zh) * | 2017-01-23 | 2017-05-24 | 山东宏达科技集团有限公司 | 一种雪雹发生及喷射装置 |
CN106823221A (zh) * | 2017-04-07 | 2017-06-13 | 山东宏达科技集团有限公司 | 一种液氮动力消防炮 |
CN106823220A (zh) * | 2017-04-07 | 2017-06-13 | 山东宏达科技集团有限公司 | 一种灭火方法、灭火***和设置该***的消防车 |
US11478670B2 (en) * | 2017-05-16 | 2022-10-25 | Robert Czarnek | Water-mist fire extinguishing system |
US20190046561A1 (en) | 2017-08-08 | 2019-02-14 | Perricone Hydrogen Water Company, Llc | Barriers for glass and other materials |
US11129848B2 (en) | 2017-08-08 | 2021-09-28 | Perricone Hydrogen Water Company, Llc | Medication enhancement using hydrogen |
CN109125997B (zh) * | 2018-07-26 | 2022-03-29 | 国家电网有限公司 | 一种灭火剂喷射装置 |
CN110242344B (zh) * | 2019-07-30 | 2024-04-30 | 鄂尔多斯市中北煤化工有限公司 | 一种向煤矿综采支架后方自动喷洒粉状防火材料的装置 |
US11123365B2 (en) | 2019-11-18 | 2021-09-21 | Perricone Hydrogen Water Company, Llc | Compositions comprising palmitoylethanolamide and hydrogen water, and methods thereof |
CN112675460A (zh) * | 2020-01-20 | 2021-04-20 | 湖北及安盾消防科技有限公司 | 快速释放的脉冲式灭火装置及电器设备 |
CN112675463A (zh) * | 2020-01-20 | 2021-04-20 | 湖北及安盾消防科技有限公司 | 密闭的脉冲式灭火装置及电器设备 |
CN111810218B (zh) * | 2020-06-16 | 2021-06-25 | 山东科技大学 | 一种井下液态co2相变动力多功能灌注***及使用方法 |
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US5377765A (en) * | 1993-02-22 | 1995-01-03 | Valkyrie Scientific Proprietary, L.C. | Method and means for extinguishing tank fires |
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DK0755286T3 (da) * | 1994-04-14 | 2000-06-05 | Goeran Sundholm | Brandbekæmpelsesinstallation til afgivelse af en væske-/gaståge |
FI98494C (sv) * | 1994-04-14 | 1997-07-10 | Goeran Sundholm | Anordning för eldsläckning |
DE4423400C2 (de) * | 1994-07-04 | 1998-02-05 | Siemens Ag | Verfahren und Vorrichtung zur Erzeugung eines Inertisierungsgases |
DE29510982U1 (de) * | 1995-07-13 | 1995-09-21 | Broemme, Albrecht, Dipl.-Ing., 12203 Berlin | Feuerlöscher |
-
1996
- 1996-09-12 EP EP96114586A patent/EP0798019A1/de not_active Withdrawn
-
1997
- 1997-03-26 AT AT97915442T patent/ATE196996T1/de active
- 1997-03-26 AU AU22919/97A patent/AU722952B2/en not_active Ceased
- 1997-03-26 ES ES97915442T patent/ES2153188T3/es not_active Expired - Lifetime
- 1997-03-26 EP EP97915442A patent/EP0891208B1/de not_active Expired - Lifetime
- 1997-03-26 NZ NZ332157A patent/NZ332157A/xx unknown
- 1997-03-26 DE DE59702499T patent/DE59702499D1/de not_active Expired - Lifetime
- 1997-03-26 WO PCT/EP1997/001550 patent/WO1997036651A1/de not_active Application Discontinuation
- 1997-03-26 PT PT97915442T patent/PT891208E/pt unknown
- 1997-03-26 CN CN97193540A patent/CN1092071C/zh not_active Expired - Fee Related
- 1997-03-26 JP JP53491697A patent/JP4031832B2/ja not_active Expired - Fee Related
- 1997-03-26 KR KR1019980707811A patent/KR20000005148A/ko not_active Application Discontinuation
- 1997-03-26 US US09/155,625 patent/US6173790B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
ATE196996T1 (de) | 2000-11-15 |
AU2291997A (en) | 1997-10-22 |
PT891208E (pt) | 2001-03-30 |
WO1997036651A1 (de) | 1997-10-09 |
US6173790B1 (en) | 2001-01-16 |
EP0891208A1 (de) | 1999-01-20 |
JP2001501839A (ja) | 2001-02-13 |
CN1092071C (zh) | 2002-10-09 |
EP0798019A1 (de) | 1997-10-01 |
JP4031832B2 (ja) | 2008-01-09 |
CN1218416A (zh) | 1999-06-02 |
ES2153188T3 (es) | 2001-02-16 |
DE59702499D1 (de) | 2000-11-23 |
KR20000005148A (ko) | 2000-01-25 |
AU722952B2 (en) | 2000-08-17 |
NZ332157A (en) | 2000-08-25 |
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