EP1512435B1 - Verfahren und Gerät zum Löschen von Metallbränden - Google Patents

Verfahren und Gerät zum Löschen von Metallbränden Download PDF

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Publication number
EP1512435B1
EP1512435B1 EP04018219A EP04018219A EP1512435B1 EP 1512435 B1 EP1512435 B1 EP 1512435B1 EP 04018219 A EP04018219 A EP 04018219A EP 04018219 A EP04018219 A EP 04018219A EP 1512435 B1 EP1512435 B1 EP 1512435B1
Authority
EP
European Patent Office
Prior art keywords
extinguishing
extinguishing agent
fire
liquid
fire extinguisher
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
EP04018219A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1512435A3 (de
EP1512435A2 (de
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/de
Publication of EP1512435A3 publication Critical patent/EP1512435A3/de
Application granted granted Critical
Publication of EP1512435B1 publication Critical patent/EP1512435B1/de
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

  • 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, and the metals aluminum, cerium, iridium, niobium and Palladium and also magnesium oxide.
  • extinguishing metal fires with extinguishing agents known today one does not speak of an actual extinguishing process, but only of a covering, which is related to the nature of extinguishing agents used to date.
  • the currently used extinguishing agents are salt (sodium chloride-potassium chloride), extinguishing powder fire class D, sand and gray castor chips.
  • salt sodium chloride-potassium chloride
  • extinguishing powder fire class D sand and gray castor chips.
  • An extinguishing process as such is currently not possible with all these extinguishing agents. But if the burning metal is only covered by the extinguishing agent, the deletion process can take several hours, even days. This represents an untenable condition for metal processors.
  • extinguishing powder also has the disadvantage that contamination of the production equipment occurs to a very high degree when a fire is to be extinguished in the area of a production plant. This requires lengthy and complex cleaning work and therefore large downtime of expensive manufacturing equipment. Furthermore, the dust formation during firefighting with powder also results in a corresponding health risk for the firefighting personnel, since the fine powder dust remains in the lungs after inhalation and can no longer be excreted.
  • the invention is therefore based on the object to provide a method for extinguishing metal fires, with which the indicated problems can be avoided at least to a considerable extent.
  • the invention operates in contrast to the prior art with a liquid extinguishing agent, which is completely anhydrous and thereby not subject to the risk of fire acceleration in water-reactive metals.
  • the liquid extinguishing agent also has no components which contain a risk potential due to dissociation or other reactions during the extinguishing process.
  • the liquid extinguishing agent used in the method according to the invention consists essentially of polydimethyl siloxane with solids and perfluoro-polyether. It is therefore 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 hazardous reactions during the deletion 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 ⁇ Dimethyl silicate 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 substance, and the latter effect, namely the formation of a glazing-like layer above the source of the fire, at the same time inhibits the entry of new atmospheric oxygen , Furthermore, due to the relatively good heat conduction, the glass-like layer forming forms contributes to rapid cooling of the fire.
  • the abovementioned proportions of solids to the polydimethyl siloxane may be, for example, melanin or boron and should not exceed 10% of the volume. These solids are helpful in masking 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 fire fighting extremely important.
  • 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 to violently, for example, in surge form or full jet form, applied, for example, to burning or liquid sodium, it may possibly come 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 undesirable reactions of the burning metal can be caused.
  • liquid extinguishing agent described above has a relatively high viscosity of 100 to 350 mPa.s, in the method according to the invention, this requires the application of a correspondingly high pressure to produce the fine extinguishing agent jets, if they are to have a good throwing distance.
  • the extinguishing device according to the invention for carrying out the method according to the invention operates at an operating pressure of at least 10 bar. This can be achieved with the liquid extinguishing agent a throw of about 4 m, which means a greater security for the user during the deletion.
  • Previously known metal fire extinguishers 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 working with supercharged fire extinguisher with an extinguishing agent container in which the liquid Extinguishing agent is subjected to the corresponding operating pressure, an extinguishing agent hose and an extinguishing agent head having a nozzle assembly through which a plurality of fine extinguishing agent jets are generated, which are preferably directed somewhat perpendicular to the fire hearth surface.
  • the working pressure of the extinguishing device should, as already mentioned, preferably be at least 10 bar to preferably about 34 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 may, as seen in the drawing, be angled slightly upwards, for example, about 30 °, and know on its underside a variety of fine outlet nozzles for generating thin extinguishing agent jets, which is substantially perpendicular to the extinguishing head end piece. 3 escape.
  • the extinguishing gun be held so that the extinguishing agent impinges almost vertically from above the fire. This applies both when the extinguishing gun is held substantially directly over the fire, so even if the extinguishing gun is held obliquely upward that a throw of the extinguishing agent beam is achieved by a few meters and the extinguishing agent beam in the arc and then turn about perpendicular to the burning metal from above.
  • the nozzle configuration of the extinguisher according to the invention also allows effective extinguishing on metal working machines in which metal fires occur, since the extinguishing agent can be effectively introduced into the narrowest column of machines in which burning metal chips can be located.
  • the flow rate for a metal fire extinguisher may be a maximum of about 301 / min.
  • Working pressure of the extinguisher and nozzle configuration must therefore be coordinated so that you get a suitable flow rate, because only then the correct extinguishing success can be achieved.
  • the extinguisher is designed so that it can be quickly refilled by the operator and immediately ready for use.
  • the invention described above thus brings considerable advantages in the fight against metal fires.
  • the extinguisher can be very simple and operate.
  • the fire is carefully dosed with extinguishing liquid by the special nozzle configuration.
  • a wetting of the surface takes place, so a deletion process in the true sense, and also the fire and adjacent surfaces is cooled by the liquid extinguishing agent.
  • liquid extinguishing agent eliminates the hitherto when using extinguishing powder very problematic heavy contamination of manufacturing machinery and equipment, so far the major downtime and cleaning work of manufacturing machines can be largely avoided.

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Fire-Extinguishing Compositions (AREA)
  • Cookers (AREA)
EP04018219A 2003-09-08 2004-07-31 Verfahren und Gerät zum Löschen von Metallbränden Expired - Lifetime EP1512435B1 (de)

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 EP1512435A2 (de) 2005-03-09
EP1512435A3 EP1512435A3 (de) 2005-04-27
EP1512435B1 true EP1512435B1 (de) 2008-01-02

Family

ID=34129695

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018219A Expired - Lifetime EP1512435B1 (de) 2003-09-08 2004-07-31 Verfahren und Gerät zum Löschen von Metallbränden

Country Status (6)

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

Families Citing this family (3)

* 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
DE102013226945A1 (de) * 2013-12-20 2015-06-25 Continental Teves Ag & Co. Ohg Löschmittel für Metallbrände und Feuerlöscher
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

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 (es) * 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 (es) * 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
SG48413A1 (en) * 1992-09-15 1998-04-17 Sundholm Goeran Nozzle
US5607787A (en) * 1993-05-04 1997-03-04 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 (en) * 1998-01-23 1999-07-29 Fire Armour Pte Ltd. Nozzle with axially and perpendicularly directed apertures
ES2230125T5 (es) * 1999-07-20 2016-10-04 3M Innovative Properties Company Uso de cetonas fluoradas en composiciones extintoras de incendios
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

Also Published As

Publication number Publication date
DE10341382A1 (de) 2005-03-31
ES2298653T3 (es) 2008-05-16
AU2004210505B2 (en) 2009-01-22
US7604065B2 (en) 2009-10-20
EP1512435A3 (de) 2005-04-27
ATE382400T1 (de) 2008-01-15
AU2004210505A1 (en) 2005-03-24
EP1512435A2 (de) 2005-03-09
US20050077056A1 (en) 2005-04-14
DE502004005808D1 (de) 2008-02-14

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