EP1512435A2 - Procédé et appareil pour l'extinction d'incendies des métaux - Google Patents

Procédé et appareil pour l'extinction d'incendies des métaux Download PDF

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Publication number
EP1512435A2
EP1512435A2 EP04018219A EP04018219A EP1512435A2 EP 1512435 A2 EP1512435 A2 EP 1512435A2 EP 04018219 A EP04018219 A EP 04018219A EP 04018219 A EP04018219 A EP 04018219A EP 1512435 A2 EP1512435 A2 EP 1512435A2
Authority
EP
European Patent Office
Prior art keywords
extinguishing
extinguishing agent
liquid
fire
metal
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
EP04018219A
Other languages
German (de)
English (en)
Other versions
EP1512435B1 (fr
EP1512435A3 (fr
Inventor
Anton Neumeir
Reinhard Effenberger
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.)
HNE Technologie AG
Original Assignee
HNE Technologie AG
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 HNE Technologie AG filed Critical HNE Technologie AG
Publication of EP1512435A2 publication Critical patent/EP1512435A2/fr
Publication of EP1512435A3 publication Critical patent/EP1512435A3/fr
Application granted granted Critical
Publication of EP1512435B1 publication Critical patent/EP1512435B1/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
    • A62C17/00—Hand fire-extinguishers essentially in the form of pistols or rifles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D1/00—Fire-extinguishing compositions; Use of chemical substances in extinguishing fires
    • A62D1/0028—Liquid extinguishing substances

Definitions

  • Metal fires namely fire class D fires (magnesium alloys, aluminum alloys, Lithium alloys, sodium, etc.) make a great deal to this day Problem in firefighting. The reason for this is the violent reaction these metals (especially if they are alkali metals) with even the smallest Amounts of water. To accelerate the combustion process enough already in the surrounding high humidity.
  • Metals which are suitable for metal fires are in detail the alkali metals sodium, Potassium, lithium and cesium, further the metals magnesium, calcium and barium, all of which also react violently with water, as well as the metals aluminum, cerium, iridium, Niobium and palladium and also magnesium oxide.
  • Extinguishing media are salt (sodium chloride-potassium chloride), extinguishing powder fire class D, sand and gray cast chips. This can only be done covering the burning metal become. A deletion process as such is not present with all these extinguishing agents possible. If the burning metal but only covered by the extinguishing agent, the Delete process for several hours, even days. This poses for metal processors an untenable condition.
  • the invention is therefore based on the object, a method for extinguishing metal fires at least to a considerable extent with the identified problems can be avoided.
  • the invention operates in contrast to the prior art with a liquid extinguishing agent, which is completely anhydrous and therefore not the risk of fire acceleration is subject to water-reactive metals.
  • the liquid extinguishing agent also has no components caused by dissociation or other reactions during the deletion process contain a potential danger.
  • the liquid extinguishing agent used in the process according to the invention consists in essentially of polydimethyl siloxane with solids and perfluoro-polyether. It So it is constructed so that it contains no water components. This makes it possible to extinguish the metal fires described above without causing the dissociation of Water or dangerous reactions occurs during the extinguishing process.
  • the example of sodium gives, for example, the following reaction formula: R - [(CH 3 ) 2 Si- O- Si (CH) 3 ) 2 ] n + 2n Na + 1 / 2n O 2 -> 2n R- (CH 3 ) 2 Si- O 2 (-) + 2n Na (+) where R denotes the radical and n denotes the length of the polymer chain.
  • reaction formula Polydimethylsiloxane + alkali metal + oxygen ⁇ dimethylsilicate of the alkali metal
  • the first two effects namely the consumption of oxygen and the Consumption of alkali metal, minimize the available amount of combustible or oxidizing Substance, and the latter effect, namely the formation of a glazing-like Layer above the source of fire, at the same time insulates the entry of new atmospheric oxygen one. Furthermore, the forming glass-like layer due to the relative Good heat conduction for rapid cooling of the fire.
  • the abovementioned solids fractions for polydimethyl siloxane can be, for example Melanin or boron and should not exceed 10% of the volume. These solids are helpful in covering the source of the fire to stop unwanted reactions.
  • the liquid extinguishing agent may also contain perfluoro-polyether. This is not involved in the silicate formation reaction described above, but has a strong Cooling effect, which is known to be extremely important for firefighting.
  • the liquid extinguishing agent it is also essential to apply the liquid extinguishing agent carefully metered onto the burning metal. If the liquid extinguishing agent applied too vigorously, for example in surge form or full jet form, for example, on burning or liquid sodium, it may possibly lead to a reaction with the liquid metal, with the result that the fire is no longer manageable. It is also essential that when applying the liquid extinguishing agent to the burning metal, such as magnesium, the amount of extinguishing agent supplied is in a certain proportion to the mass of the metal, so that no unwanted reactions of the burning metal can be caused.
  • liquid extinguishing agent described above has a relatively high viscosity of 100 to 350 mPa.s, this requires the application of a correspondingly high pressure for generating the fine extinguishing agent jets, if this one should have good throw.
  • the extinguishing device according to the invention for carrying out the method according to the invention works with an operating pressure of at least 10 bar. This can be done with the liquid Extinguishing agent a throw of about 4 m can be achieved, which is a larger for the user Safety during the deletion process means.
  • Previously known metal fire extinguishers (Pulverlöschella) have a throw of only a maximum of about 0.5 m, so that the User is at risk because of the immediate proximity to the fire to a high degree.
  • the serving for carrying out the method extinguishing device according to the invention may be a with Charging pressure working fire extinguisher with an extinguishing agent tank in which the liquid Extinguishing agent is subjected to the appropriate operating pressure, an extinguishing agent hose and an extinguishing agent head having a nozzle assembly through a plurality of fine extinguishing agent jets are generated, which are preferably somewhat perpendicular be focused on the fire surface.
  • the working pressure of the extinguisher should, as already mentioned, preferably at least 10 bar to preferably about 34 lie bar.
  • the extinguishing pistol 1 has a nozzle head 2 in the form of a projecting from the extinguishing gun longer tubular body.
  • Whose front end portion 3 can, as seen in the drawing, angled slightly upwards be, for example, about 30 °, and know on its underside a variety of fine discharge nozzles for generating thin extinguishing agent jets, which substantially emerge perpendicular to the erase head end piece 3.
  • the extinguishing pistol held so be that the extinguishing agent impinges approximately vertically from above the fire. This applies both when the firing pistol is essentially directly above the source of the fire held, even if the extinguishing pistol is held so obliquely upwards, that a throw of the extinguishing agent beam of a few meters is achieved and the Extinguishing agent jet runs in the arc and then turn about vertically from above on the burning metal impinges.
  • the nozzle configuration of the extinguishing device according to the invention also allows an effective Extinguishing metalworking machines in which metal fires occur because the Extinguishing agent can also be effectively placed in the narrowest column of machinery, in which can be burning metal chips.
  • the erase device is designed so that it quickly by the operator himself is refillable and ready for use immediately.
  • the invention described above thus brings significant advantages in the fight against Metal fires.
  • the extinguishing agent for the fire class D can the extinguisher be very simple and operate.
  • the fire is going through The special nozzle configuration carefully dosed with extinguishing liquid applied. Thereby wetting of the surface takes place, ie a deletion process in the true sense, and, in addition, the combustible material as well as adjacent areas are affected by the liquid Extinguishing agent cooled.
  • liquid extinguishing agent By using the liquid extinguishing agent also eliminates the previously when using extinguishing powder very problematic heavy contamination of production machines and plants, thus reducing the hitherto large downtime and cleaning of production machines can be largely avoided.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Cookers (AREA)
EP04018219A 2003-09-08 2004-07-31 Procédé et appareil pour l'extinction d'incendies des métaux Expired - Lifetime EP1512435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10341382 2003-09-08
DE10341382A DE10341382A1 (de) 2003-09-08 2003-09-08 Verfahren und Gerät zum Löschen von Metallbränden

Publications (3)

Publication Number Publication Date
EP1512435A2 true EP1512435A2 (fr) 2005-03-09
EP1512435A3 EP1512435A3 (fr) 2005-04-27
EP1512435B1 EP1512435B1 (fr) 2008-01-02

Family

ID=34129695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018219A Expired - Lifetime EP1512435B1 (fr) 2003-09-08 2004-07-31 Procédé et appareil pour l'extinction d'incendies des métaux

Country Status (6)

Country Link
US (1) US7604065B2 (fr)
EP (1) EP1512435B1 (fr)
AT (1) ATE382400T1 (fr)
AU (1) AU2004210505B2 (fr)
DE (2) DE10341382A1 (fr)
ES (1) ES2298653T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015137A1 (de) * 2009-03-31 2010-10-14 First Value Holdings Ltd. Verfahren zum Löschen von pyrotechnischen Stoffen
RU190725U1 (ru) * 2019-04-26 2019-07-10 Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") Противопожарное устройство

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013226945A1 (de) * 2013-12-20 2015-06-25 Continental Teves Ag & Co. Ohg Löschmittel für Metallbrände und Feuerlöscher

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB278004A (en) * 1926-09-25 1928-01-12 Excelsior Feuerloschgerate A G Improvements in or relating to foam fire-extinguishing apparatus
DE722749C (de) * 1938-06-19 1942-07-20 Messerschmitt Boelkow Blohm Verfahren und Vorrichtung zum Loeschen von Braenden hochmagnesiumhaltiger und aehnlicher Stoffe
DE756889C (de) * 1939-07-09 1954-10-04 Messerschmitt Boelkow Blohm Vorrichtung zum Loeschen von Braenden hochmagnesiumhaltiger und aehnlicher Stoffe
NL7110261A (fr) * 1970-07-30 1972-02-01
US3727841A (en) * 1971-09-07 1973-04-17 R Hengesbach Multiple jet fluid sprinkling, spraying and diffusing device
US3698482A (en) * 1971-09-29 1972-10-17 Factory Mutual Res Corp Fire protection system utilizing high-capacity direct discharge nozzles
JPS5124302B2 (fr) * 1972-10-26 1976-07-23
GB1476241A (en) * 1973-05-29 1977-06-10 Square D Co Arc-extinguishing materials
CS213620B1 (en) * 1977-12-23 1982-04-09 Eduard Vasatko Packing blowable foil
US4272414A (en) * 1978-05-26 1981-06-09 Monsanto Company Chemical retardants for forest fires
US4756839A (en) * 1986-03-26 1988-07-12 Curzon Jon L Fire extinguishing composition
GB9014766D0 (en) * 1990-07-03 1990-08-22 Ici Plc Fire retardant compositions
US5336847A (en) * 1991-05-09 1994-08-09 Fuji Electric Co., Ltd. Stationary induction apparatus containing uninflammable insulating liquid
DK0660754T3 (da) * 1992-09-15 1998-11-02 Goeran Sundholm Dyse med skruefjeder, der bringer væske i hvirvelbevægelse
GB2277830B (en) * 1993-05-04 1996-10-23 Programme 3 Patent Holdings High temperature storage battery
JPH07238178A (ja) * 1994-02-25 1995-09-12 Sekisui Chem Co Ltd 難燃性ポリオレフィン系樹脂発泡用組成物
WO1999037365A1 (fr) * 1998-01-23 1999-07-29 Fire Armour Pte Ltd. Embout comportant des ouvertures a orientation axiale et perpendiculaire
DE60042565D1 (de) * 1999-07-20 2009-08-27 3M Innovative Properties Co Feuerlöschzusammensetzung
US6540163B1 (en) * 2002-10-02 2003-04-01 Dustin Huang Water spray pistol
DE10249386B3 (de) * 2002-10-23 2004-07-08 Pingo Erzeugnisse Gmbh Mittel zur präventiven und abwehrenden Bekämpfung von Metallbränden
US6719331B1 (en) * 2003-01-30 2004-04-13 Ming Jen Chen Telescopic tube with water supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015137A1 (de) * 2009-03-31 2010-10-14 First Value Holdings Ltd. Verfahren zum Löschen von pyrotechnischen Stoffen
RU190725U1 (ru) * 2019-04-26 2019-07-10 Федеральное государственное автономное образовательное учреждение высшего образования "Южно-Уральский государственный университет (национальный исследовательский университет)" (ФГАОУ ВО "ЮУрГУ (НИУ)") Противопожарное устройство

Also Published As

Publication number Publication date
ATE382400T1 (de) 2008-01-15
EP1512435B1 (fr) 2008-01-02
US20050077056A1 (en) 2005-04-14
DE502004005808D1 (de) 2008-02-14
AU2004210505B2 (en) 2009-01-22
ES2298653T3 (es) 2008-05-16
US7604065B2 (en) 2009-10-20
AU2004210505A1 (en) 2005-03-24
EP1512435A3 (fr) 2005-04-27
DE10341382A1 (de) 2005-03-31

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