EP1132114A1 - Méthode et appareil pour mélanger un gaz comprimé à un fluide moussant anti-incendie - Google Patents

Méthode et appareil pour mélanger un gaz comprimé à un fluide moussant anti-incendie Download PDF

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Publication number
EP1132114A1
EP1132114A1 EP01890058A EP01890058A EP1132114A1 EP 1132114 A1 EP1132114 A1 EP 1132114A1 EP 01890058 A EP01890058 A EP 01890058A EP 01890058 A EP01890058 A EP 01890058A EP 1132114 A1 EP1132114 A1 EP 1132114A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing agent
mixing chamber
compressed gas
line
propellant
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.)
Withdrawn
Application number
EP01890058A
Other languages
German (de)
English (en)
Inventor
Andreas Zeller
Peter Kranl
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.)
Lenzing Technik GmbH
Original Assignee
Lenzing Technik GmbH
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 Lenzing Technik GmbH filed Critical Lenzing Technik GmbH
Publication of EP1132114A1 publication Critical patent/EP1132114A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/02—Making of fire-extinguishing materials immediately before use of foam

Definitions

  • the invention relates to a device and a method for admixing a compressed gas to a foam-forming extinguishing liquid.
  • extinguishing devices For firefighting operations that require rapid intervention at the site Emergency vehicles, e.g. B. at airports so-called advance vehicles with extinguishing devices used, which the entire intended for the respective purpose Carry the amount of extinguishing agent with you.
  • extinguishing devices are e.g. B. from DE-C 2846150 and known by the applicant under the name "Poly extinguishing systems".
  • the extinguishing agent is in a storage container by means of a Propellants, e.g. B. by compressed air, pressurized and by means of this pressure Ejection device transported.
  • the foam-forming extinguishing agent liquid can already be premixed, or during use by adding foam agent to a primary extinguishing agent, mostly water.
  • Foaming can be caused by the addition of air from the environment through the Suction effect of the foam agent conveyed in the ejection device.
  • CAFS Compressed Air Foam System
  • the present invention has as its object in extinguishing devices in which the Extinguishing agent is released from storage containers by means of a gas under pressure, inexpensive to integrate a CAF system and a device for admixing compressed gas to a foam-forming extinguishing liquid places that quickly without great expenditure on equipment and control technology fire extinguishing device with CAF system.
  • a device for admixing a compressed gas to a foam-forming extinguishing agent liquid consisting of a source of blowing agent (9, 14) which blowing agents, e.g. B. air, under pressure, one Extinguishing agent storage container (7) for holding extinguishing agent liquid and propellant, a mixing chamber (6) for admixing a compressed gas for Extinguishing agent liquid for producing a homogeneous dispersion, a first line (10) from the propellant source to the extinguishing agent reservoir and a second line (12) to Conveying the extinguishing agent from the extinguishing agent reservoir to the mixing chamber, and is characterized in that a third line (11) is provided which the Mixing chamber (6) with the blowing agent source (9, 14) connects.
  • a third line (11) is provided which the Mixing chamber (6) with the blowing agent source (9, 14) connects.
  • An advantage of the invention is that the same gas, which is used as a blowing agent Promotion of the extinguishing agent serves at the same time to form the homogeneous gas / extinguishing agent dispersion (CAF) can be used.
  • CAF homogeneous gas / extinguishing agent dispersion
  • the compressed gas of the mixing chamber from the Extinguishing agent supply container supplied.
  • the third line connects the Mixing chamber with the extinguishing agent reservoir.
  • the third line can also be from the branch off the first line.
  • the compressed gas from the propellant source if necessary after pressure reduction, fed directly into the third line and subsequently fed to the mixing chamber.
  • the source of blowing agent is directly with the Mixing chamber connected.
  • the extinguishing agent is removed from the pressurized extinguishing agent reservoir via the second line is brought out and reaches the mixing chamber.
  • the flow of the Extinguishing agent created negative pressure allows compressed gas from the third Line for the generation of CAF foam in this mixing chamber into the extinguishing agent can be introduced.
  • a homogeneous gas / extinguishing agent dispersion is formed.
  • the embodiment according to the invention correspondingly the third, is particularly advantageous Line from the extinguishing agent storage container leads to the mixing chamber or from the first line branches.
  • the quasi-static operating pressure in the extinguishing agent reservoir is higher than that of the flowing extinguishing agent, so that the compressed gas from the third line into the Mixing chamber can be introduced. It has been shown that this Embodiment due to the dependence of the pressure of the flowing extinguishing agent on the flow velocity (and thus the quantity of the product) regardless of the set quantity of the extinguishing agent automatically a constant ratio of compressed gas and extinguishing agent. This means that complex, In particular, electronic controls are dispensed to use CAF foam with approximately to produce the same composition. One can speak of a self-regulation become.
  • pressure vessels in which the propellant such. B. air or Nitrogen, which is contained in compressed form, can be used.
  • the propellant such. B. air or Nitrogen
  • included commercially available pressure vessels e.g. B. compressed air or nitrogen bottles, usually compressed gas in an amount of 4 1 to 50 1 under a pressure of 200000 hPa to 300000 hPa.
  • pressure vessels can be used.
  • the pressure of the propellant source is controlled by means of a Pressure regulator reduced to the desired operating pressure and the blowing agent reaches via a first line into the extinguishing agent reservoir and builds the desired one there Pressure on.
  • blowing agent source consists of a conventional compressor system.
  • the foam-forming extinguishing agent liquid consists of a primary extinguishing agent, mainly water and a foaming agent consisting of a commercially available Foaming agent and possibly other additives.
  • the foam-forming extinguishing liquid can already be used as a premix in the Extinguishing agent storage containers are available. Alternatively, it is located in the extinguishing agent reservoir only the primary extinguishing agent, whereby here by means of an admixing system which between Extinguishing agent storage container and mixing chamber is arranged by admixing Foam agent The foam-forming extinguishing agent liquid is generated during operation.
  • the object of the invention is also achieved by a method, one Extinguishing agent liquid in an extinguishing agent reservoir (7) with propellant from a Propellant source (9, 14) is pressurized by this pressure to a Mixing chamber (6) is transported and in this mixing chamber with a compressed gas is mixed, and which is characterized in that the compressed gas of the Mixing chamber (6) from the propellant source (9, 14) is supplied.
  • Fig. 1, 1 denotes a central, mechanical or electronic control by means of which the device and its operation can be controlled.
  • the extinguishing agent is either as Premix or as a primary extinguishing agent in the extinguishing agent reservoir 7 before.
  • the source of propellant consists of pressure vessels 9, in which the Propellants such as As air or nitrogen, is contained in compressed form and wherein Propellant is removed from these pressure vessels.
  • a Shut-off device 3 and a pressure regulating device 5 are provided.
  • a first line 10 connects the Propellant source with the extinguishing agent reservoir 7.
  • the control the shut-off device 3 is opened and propellant passes through the first line 10 into the Extinguishing agent storage container 7 until the one set by means of the pressure control element 5 Operating pressure in the extinguishing agent reservoir 7 is reached.
  • the propellant source consists of a conventional one Compressor system 14, in which case ambient air to the desired Operating pressure is compressed and the propellant thus the compressor system is removed.
  • the extinguishing agent becomes due to the operating pressure built up in the extinguishing agent reservoir conveyed to the mixing chamber 6 via a second line 12.
  • a shut-off valve can also be used here 2 is provided, which is controlled by the controller 1.
  • an admixing system for foaming agents is provided (not with which the extinguishing agent in front of the mixing chamber is a foam agent is added.
  • compressed gas is used with the foam-forming Extinguishing agent mixed in the mixing chamber 6, the compressed gas via a third Line 11 is introduced due to the lower pressure of the flowing extinguishing agent.
  • the compressed gas can directly from the mixing chamber 6 (not shown) Blowing agent source or via a connecting line 8 from the first line 10 to the third line 11 are supplied.
  • Another option is to remove the compressed gas from the Feed extinguishing agent reservoir 7 to the mixing chamber 6.
  • the foam-forming extinguishing agent reaches the mixing chamber 6 via a Extinguishing agent delivery line 13 to an ejection device (not shown). By the pressure release after ejection, the extinguishing foam is formed.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
EP01890058A 2000-03-10 2001-03-05 Méthode et appareil pour mélanger un gaz comprimé à un fluide moussant anti-incendie Withdrawn EP1132114A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1682000U 2000-03-10
AT0016800U AT4222U1 (de) 2000-03-10 2000-03-10 Vorrichtung und verfahren zum zumischen eines komprimierten gases zu einer schaumbildenden löschmittelflüssigkeit

Publications (1)

Publication Number Publication Date
EP1132114A1 true EP1132114A1 (fr) 2001-09-12

Family

ID=3483363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01890058A Withdrawn EP1132114A1 (fr) 2000-03-10 2001-03-05 Méthode et appareil pour mélanger un gaz comprimé à un fluide moussant anti-incendie

Country Status (2)

Country Link
EP (1) EP1132114A1 (fr)
AT (1) AT4222U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7458427B2 (en) 2000-03-03 2008-12-02 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846150C2 (de) 1978-10-24 1982-05-06 Erich 7918 Illertissen Müller Schnelleinsatz-Schaumlöscheinheit
US5255747A (en) 1992-10-01 1993-10-26 Hale Fire Pump Company Compressed air foam system
DE19520265A1 (de) * 1995-06-02 1996-12-05 Alfons Millitzer Brandschutz U Verfahren und Vorrichtung zum Herstellen von Löschschaum
WO1998051374A2 (fr) * 1997-05-14 1998-11-19 Nauchno-Issledovatelsky Institut Nizkikh Temperatur Pri Mai (Moskovskom Aviatsionnom Institute-Tekhnicheskom Universitete) Appareil anti-incendie
US5881817A (en) 1997-07-18 1999-03-16 Mahrt; David M. Cold compressed air foam fire control apparatus
WO2000012177A1 (fr) * 1998-08-12 2000-03-09 Edvardsen Odd J Procede de production d'une mousse d'extinction, tete d'ajutage et systeme utilises dans une installation d'extinction d'incendie

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2846150C2 (de) 1978-10-24 1982-05-06 Erich 7918 Illertissen Müller Schnelleinsatz-Schaumlöscheinheit
US5255747A (en) 1992-10-01 1993-10-26 Hale Fire Pump Company Compressed air foam system
DE19520265A1 (de) * 1995-06-02 1996-12-05 Alfons Millitzer Brandschutz U Verfahren und Vorrichtung zum Herstellen von Löschschaum
WO1998051374A2 (fr) * 1997-05-14 1998-11-19 Nauchno-Issledovatelsky Institut Nizkikh Temperatur Pri Mai (Moskovskom Aviatsionnom Institute-Tekhnicheskom Universitete) Appareil anti-incendie
US5881817A (en) 1997-07-18 1999-03-16 Mahrt; David M. Cold compressed air foam fire control apparatus
WO2000012177A1 (fr) * 1998-08-12 2000-03-09 Edvardsen Odd J Procede de production d'une mousse d'extinction, tete d'ajutage et systeme utilises dans une installation d'extinction d'incendie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7458427B2 (en) 2000-03-03 2008-12-02 Ulrich Braun Mixing chamber for producing compressed air foam for fire extinguishing devices

Also Published As

Publication number Publication date
AT4222U1 (de) 2001-04-25

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