EP0891208B1 - Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes - Google Patents

Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes Download PDF

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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
Application number
EP97915442A
Other languages
German (de)
English (en)
Other versions
EP0891208A1 (fr
Inventor
Manfred Russwurm
Frederic Aebischer
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.)
MIMX HOLDINGS & Co KG GmbH
MINIMAX HOLDING GmbH
General Electric Switzerland GmbH
Minimax GmbH and Co KG
Original Assignee
ABB Asea Brown Boveri Ltd
Minimax GmbH and Co KG
Preussag AG Minimax
Asea Brown Boveri AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Asea Brown Boveri Ltd, Minimax GmbH and Co KG, Preussag AG Minimax, Asea Brown Boveri AB filed Critical ABB Asea Brown Boveri Ltd
Priority to EP97915442A priority Critical patent/EP0891208B1/fr
Publication of EP0891208A1 publication Critical patent/EP0891208A1/fr
Application granted granted Critical
Publication of EP0891208B1 publication Critical patent/EP0891208B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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)

Claims (13)

  1. Procédé pour atomiser un agent d'extinction liquide dans des installations d'extinction, caractérisé en ce que du gaz inerte sous forme liquéfiée est ajouté à l'agent d'extinction en amont de la buse pour produire un écoulement à bulles à deux phases, « bubble flow », le gaz inerte étant injecté sous une pression élevée par rapport à l'agent d'extinction.
  2. Procédé suivant la revendication 1, caractérisé en ce que du CO2 est ajouté comme gaz inerte à l'agent d'extinction.
  3. Procédé suivant l'une des revendications 1 et 2, caractérisé en ce que les gaz inertes sont ajoutés par intermittence.
  4. Procédé suivant les revendications 1 à 3, caractérisé en ce que la quantité de gaz inerte ajoutée est supérieure à celle passant en solution dans l'agent d'extinction liquide.
  5. Procédé suivant l'une des revendications 1 à 4, caractérisé en ce que les agents s'écoulant dans la canalisation sont atomisés à la sortie de cette dernière de sorte qu'ils forment un aérosol, brouillard d'eau.
  6. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce que la quantité du gaz inerte liquéfié ajouté est réglée en fonction de la concentration de gaz inerte dans la zone d'extinction.
  7. Procédé suivant l'une des revendications 1 à 5, caractérisé en ce que la quantité du gaz inerte liquéfié ajouté est réglée d'après l'allure de l'incendie.
  8. Procédé suivant l'une des revendications 1 à 7, caractérisé en ce que l'atomisation est assurée au moyen de buses d'extinction d'un angle d'ouverture réglable, et l'angle d'ouverture est réglé en fonction du foyer et de l'allure de l'incendie, en particulier au moyen de la pression sur les buses d'extinction.
  9. Dispositif pour atomiser un agent d'extinction dans des installations d'extinction avec une arrivée (1) pour de l'agent d'extinction liquide, avec un dispositif de distribution (5) pour l'agent d'extinction, caractérisé en ce que sont prévus au moins une unité de mélange (3) pour du gaz inerte liquéfié, disposée en amont du dispositif de distribution (5), et au moins un réservoir (2) pour du gaz inerte liquéfié.
  10. Dispositif suivant la revendication 9, caractérisé en ce qu'un réservoir est disposé comme unité de mélange, réservoir dans lequel le gaz inerte liquéfié est ajouté en continu à l'agent d'extinction en circulation.
  11. Dispositif suivant l'une des revendications 9 et 10, caractérisé en ce qu'au moins un détecteur (6) pour la détermination de la concentration du gaz inerte dans la zone d'extinction (4) est relié à au moins un dispositif d'évaluation (7), et ce dernier est relié à au moins un dispositif de réglage (8) de la quantité du gaz inerte.
  12. Dispositif suivant l'une des revendications 9 à 11, caractérisé en ce qu'au moins un détecteur est disposé pour la détermination de l'allure de l'incendie et pour la commande de l'extinction.
  13. Dispositif suivant l'une des revendications 9 à 12, caractérisé en ce que les dispositifs de distribution (5) pour de l'agent d'extinction liquide présentent des angles d'ouverture réglables et l'angle d'ouverture est réglable en fonction de la quantité de gaz inerte liquéfié ajoutée.
EP97915442A 1996-03-30 1997-03-26 Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes Expired - Lifetime EP0891208B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97915442A EP0891208B1 (fr) 1996-03-30 1997-03-26 Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP96105159 1996-03-30
EP96105159 1996-03-30
EP96114586A EP0798019A1 (fr) 1996-03-30 1996-09-12 Méthode et appareil pour l'atomisation d'un agent extincteur liquide pour installation d'extinction d'incendie stationnaire
EP96114586 1996-09-12
EP97915442A EP0891208B1 (fr) 1996-03-30 1997-03-26 Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes
PCT/EP1997/001550 WO1997036651A1 (fr) 1996-03-30 1997-03-26 Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes

Publications (2)

Publication Number Publication Date
EP0891208A1 EP0891208A1 (fr) 1999-01-20
EP0891208B1 true EP0891208B1 (fr) 2000-10-18

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP96114586A Withdrawn EP0798019A1 (fr) 1996-03-30 1996-09-12 Méthode et appareil pour l'atomisation d'un agent extincteur liquide pour installation d'extinction d'incendie stationnaire
EP97915442A Expired - Lifetime EP0891208B1 (fr) 1996-03-30 1997-03-26 Procede et dispositif pour atomiser un agent d'extinction dans des installations d'extinction fixes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP96114586A Withdrawn EP0798019A1 (fr) 1996-03-30 1996-09-12 Méthode et appareil pour l'atomisation d'un agent extincteur liquide pour installation d'extinction d'incendie stationnaire

Country Status (12)

Country Link
US (1) US6173790B1 (fr)
EP (2) EP0798019A1 (fr)
JP (1) JP4031832B2 (fr)
KR (1) KR20000005148A (fr)
CN (1) CN1092071C (fr)
AT (1) ATE196996T1 (fr)
AU (1) AU722952B2 (fr)
DE (1) DE59702499D1 (fr)
ES (1) ES2153188T3 (fr)
NZ (1) NZ332157A (fr)
PT (1) PT891208E (fr)
WO (1) WO1997036651A1 (fr)

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KR101269878B1 (ko) * 2010-07-29 2013-06-07 충북대학교 산학협력단 화학반응을 이용한 미세 물분무 소화시스템
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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
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、灭火系统和设置该系统的消防车
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
WO2018213214A1 (fr) * 2017-05-16 2018-11-22 Robert Czarnek Système d'extinction d'incendie à brouillard d'eau
US11129848B2 (en) 2017-08-08 2021-09-28 Perricone Hydrogen Water Company, Llc Medication enhancement using hydrogen
US20190046561A1 (en) 2017-08-08 2019-02-14 Perricone Hydrogen Water Company, Llc Barriers for glass and other materials
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系统及使用方法

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Also Published As

Publication number Publication date
EP0798019A1 (fr) 1997-10-01
CN1218416A (zh) 1999-06-02
PT891208E (pt) 2001-03-30
NZ332157A (en) 2000-08-25
AU722952B2 (en) 2000-08-17
AU2291997A (en) 1997-10-22
US6173790B1 (en) 2001-01-16
DE59702499D1 (de) 2000-11-23
WO1997036651A1 (fr) 1997-10-09
JP2001501839A (ja) 2001-02-13
JP4031832B2 (ja) 2008-01-09
EP0891208A1 (fr) 1999-01-20
CN1092071C (zh) 2002-10-09
ATE196996T1 (de) 2000-11-15
KR20000005148A (ko) 2000-01-25
ES2153188T3 (es) 2001-02-16

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