EP3661608A2 - Procédé et dispositif permettant de produire de la mousse d'extinction d'incendie à l'aide d'un gaz à pouvoir d'extinction - Google Patents

Procédé et dispositif permettant de produire de la mousse d'extinction d'incendie à l'aide d'un gaz à pouvoir d'extinction

Info

Publication number
EP3661608A2
EP3661608A2 EP18759258.9A EP18759258A EP3661608A2 EP 3661608 A2 EP3661608 A2 EP 3661608A2 EP 18759258 A EP18759258 A EP 18759258A EP 3661608 A2 EP3661608 A2 EP 3661608A2
Authority
EP
European Patent Office
Prior art keywords
foaming
section
component
extinguishing water
compressed gas
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.)
Pending
Application number
EP18759258.9A
Other languages
German (de)
English (en)
Inventor
Evert JONKER
Marcel RUESINK
Joachim BÖKE
Roland Stephan
Michael HARNACK
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.)
Minimax GmbH and Co KG
Original Assignee
Minimax GmbH and Co KG
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 Minimax GmbH and Co KG filed Critical Minimax GmbH and Co KG
Publication of EP3661608A2 publication Critical patent/EP3661608A2/fr
Pending legal-status Critical Current

Links

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
    • A62C5/027—Heavy foam
    • 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
    • A62C5/022—Making of fire-extinguishing materials immediately before use of foam with air or gas present as such
    • A62C5/024—Apparatus in the form of pipes
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/005—Delivery of fire-extinguishing material using nozzles
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C31/00—Delivery of fire-extinguishing material
    • A62C31/02—Nozzles specially adapted for fire-extinguishing
    • A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C5/00—Making of fire-extinguishing materials immediately before use
    • A62C5/002—Apparatus for mixing extinguishants with water
    • 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
    • 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
    • A62C5/022—Making of fire-extinguishing materials immediately before use of foam with air or gas present as such
    • 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
    • A62C99/0036—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using foam

Definitions

  • the present invention relates to a method and a device for producing compressed air foam, in particular for fire fighting and / or reduction of release consequences.
  • the invention relates to such a method or apparatus in which extinguishing water admixed with foam is prepared and the fire-extinguishing water admixed with foam is foamed with the addition of compressed gas.
  • Such methods and devices are known for the production of so-called compressed air foam (CAF).
  • US 201 1/0127051 A1 relates to a pressure air foam system comprising one or more optional fluid pumps, one or more mixer devices, one or more optional foam systems, one or more optional gas compressors, and a system controller. Also described is a method of using the compressed air foam system.
  • US 2003/0047327 A1 relates to a fire suppression device with a nozzle which allows variable air mixing, and to a method for producing a foam discharge with such a nozzle.
  • WO 201 1/085208 A2 relates to a foaming tube for a fire fighting nozzle comprising a tubular body having a longitudinal axis and a passageway extending therethrough configured to direct a mixture of foam and water from a firefighting nozzle.
  • the passage has a larger diameter than the nozzle outlet to provide an expansion tube for the foam / water mixture.
  • the object is achieved in a method and an apparatus for producing Druckiuftschaum of the type mentioned by the features of the characterizing parts of the independent claims.
  • the object is achieved by a process for the production of compressed air foam, the process comprising providing extinguishing water admixed with foaming agent and foaming the foaming agent mixed with extinguishing water with the addition of compressed gas.
  • the compressed gas has a chemical extinguishing agent.
  • Compressed foam such as CAF
  • CAF Compressed foam
  • a chemical extinguishing agent requires a significantly lower concentration and is therefore easier to apply even over a large area, for example a pool of liquid.
  • a combination of the chemical extinguishing agent, for example, with inert gases for oxygen displacement is also advantageously usable in some embodiments.
  • the extinguishing water admixed with foaming agent can either be provided as part of the process by admixing foam with the extinguishing water or can already be provided in premixed form, for example in a tank.
  • the fire-extinguishing water admixed with foaming agent can also be referred to as extinguishing agentS based on the familiar usage.
  • the chemical extinguishing agent comprises a chemical quenching powder.
  • Dry chemical powders as are known, for example, from powder extinguishing systems, are particularly suitable for suppressing combustion.
  • the chemical quenchers are in particular those extinguishing powders of fire classes B and C, which inhibit, i. the anti-catalytic extinguishing effect cause.
  • a compressed air foam produced by the manufacturing method according to the invention thus contains in the air chambers or air bubbles surrounded by the extinguishing water admixed with Schaummiitel, a chemical extinguishing powder or a different chemical Löstittei, such as a chemical quenching gas that is released in a destruction of the compressed air foam and promotes an inhibition of the flames.
  • the Druckiuftschaum invention shows an increased firefighting effect, namely by combining the extinguishing effect of the foam with the inhibiting effect of the chemical extinguishing agent
  • the compressed gas further comprises an inert gas and / or air.
  • the compressed air can Ambient air or preferably comprise any known inert gas for fire fighting.
  • ambient air is the ease of manufacture, for example, at the point of manufacture of the compressed air foam via a compressor.
  • On-site generation of inert gas e.g. with a nitrogen generator is also possible.
  • inert gases have an increased fire protection efficiency, as they create a focal inert environment upon destruction of the foam, which is particularly effective in combination with the foam and the chemical extinguishing agent.
  • the foaming step in the flow direction of the foaming agent mixed with foaming agent is formed in two stages.
  • the extinguishing water mixed with Schaummittei is passed through a jet regulator.
  • the jet regulator is preferably designed as a screen with external gas addition or as a siphon with and without gas addition, but may also have any other suitable shape.
  • the compressed gas is added. Characterized in that the compressed gas is supplied in a second foaming, a particularly good distribution of the chemical Löschmitteis is made possible in the compressed air foam. At the same time, a particularly resistant and at the same time light foam, i. with a relatively small proportion of extinguishing water, provided.
  • the second stage of the foaming and the possibility of controlling the admixed amount of gas makes it possible to adjust the desired properties of the foam.
  • a single-stage or more than two-stage foaming is possible.
  • the extinguishing water admixed with foaming agent is foamed during a foaming route.
  • the compressed gas is added in a section of the expanding section foam section.
  • the cross section increases can be taken by the introduction of the compressed gas suitable influence on the extinguishing foam.
  • the compressed gas is supplied via a plurality of nozzles arranged on the section of increasing cross-section.
  • the plurality of nozzles in particular together with valves arranged in the supply, permit a precise control of the admixture of the chemical extinguishing agent and the adjustment of the state of the foam, as well as of the foaming.
  • a condition of the foam is spoken in the range of CAF especially from wet to dry.
  • the control of the valve or valves with the nozzles and thus the introduction of the compressed gas or the chemical extinguishing agent can be adapted to the requirements of the actual fire or the dangers of the place of use, such. the cover of the pool for evaporation reduction or fire fighting.
  • the extinguishing water is provided via a fire-extinguishing water line
  • the foaming agent is mixed with the extinguishing water via a foaming-mixture component lying in the path of the extinguishing-water line.
  • the foaming agent admixing component is in particular a venturi nozzle, but in other embodiments it can also be configured differently.
  • the foam can also be mixed by gravity or by means of a pump with the extinguishing water, in other embodiments, the already with the Schaummittei staggered extinguishing water, for example in a tank, can be provided.
  • a selectable adjusted additive is additionally added to the extinguishing water. Through the additive, the fire-fighting effect of the extinguishing foam can be further improved.
  • the object is further achieved according to the invention in a second aspect by a method for producing compressed air foam, wherein the method comprises providing extinguishing water admixed with foaming agent and foaming the Schaumschwittei admixed extinguishing water with the addition of compressed gas.
  • the step of foaming is formed in two stages in the flow direction of the foaming agent mixed with foaming agent, wherein in a first foaming the foam center! admixed extinguishing water through a jet regulator, in particular a siphon-like gas mixture or a gas supply with subsequent sieve, is performed and wherein in a second foaming the compressed gas is added.
  • the improved fire fighting or reduction of release consequences is already achieved by the two-stage foaming without any special requirements for the compressed gas. Nevertheless, it is also possible to combine the method according to this aspect with the compressed gas having the chemical extinguishing agent and / or one of the embodiments described in relation to the first aspect in order to improve the firefighting or further reduce the consequences of the release ,
  • the object is further according to a third aspect by a method for firefighting and / or to mitigate Störfallkonsequenzen, the method comprises using a compressed air foam produced according to the first or second aspect.
  • the object is further achieved by a device for producing compressed air foam.
  • the apparatus comprises an extinguishing water feed component for supplying extinguishing water, a foam mixing component for mixing foaming agent to the extinguishing water, and a foaming component for foaming the foaming agent-added fire-extinguishing water with the addition of compressed gas.
  • the compressed gas includes a chemical extinguishing agent.
  • the flow component comprises a first foaming component with a jet control component for foaming the foaming agent mixed with foaming agent and a second foaming component for adding the compressed gas.
  • the foaming component according to this embodiment thus enables the two-stage, advantageous foaming.
  • the jet control component is preferably designed as a sieve.
  • the first foaming component is preferably alternatively or additionally designed as a chamber with a slightly higher external pressure, so that here always a gas / air admixture can take place.
  • the second foaming component comprises a foaming section of increasing cross-section, the second foaming component having at least one valve and a plurality of nozzles via which the compressed gas can be fed, which are arranged on the section of the foaming section with increasing cross-section
  • composition or the state of the final foam, including the concentration of the chemical extinguishing agent therein, are set.
  • the apparatus can be appropriately set according to the requirements of the case of fire or evaporation reduction / cooling.
  • the plurality of nozzles are arranged rotationally symmetrical about a central axis of the Schwarzumungsumble.
  • the rotationally symmetrical arrangement allows a particularly uniform distribution of the compressed gas in the foam produced.
  • the plurality of nozzles are arranged axially with respect to a flow direction of the Schwarzumungsumble in multiple planes.
  • a plurality of different nozzles are automatically arranged at locations with different cross section of the flow path, since the nozzles are arranged just in the area in which increases the cross section of the Shuumungsumble.
  • the multiple axial positions of the nozzles further improve the distribution of the compressed gas in the foam and hence the foam produced.
  • the device is designed for mobile use. Thus, it is possible that the device is transported as close to the fire and the Pressure foam is thus generated in the vicinity of the planned Einsaizort.
  • the device can also be mounted in a stationary manner.
  • the object is achieved by a device for producing compressed air foam, the device comprising an extinguishing water inflow component for supplying extinguishing water, a foaming agent admixing component for admixing foamed rubber to the extinguishing water and a foaming component for foaming the foaming agent-added extinguishing water with the addition of compressed gas having.
  • the foaming component comprises a first foaming component with a jet component for foaming the extinguishing water admixed with foamed material, in particular a siphon-like gas mixture or a gas feed with a subsequent sieve, and a second foaming component for adding the compressed gas.
  • the improved firefighting or reduction of release consequences is already achieved by the two-stage foaming without any special requirements for the compressed gas.
  • the device according to this aspect with the compressed gas having the chemical extinguishing agent and / or one of the embodiments described with regard to the further aspects in order to improve the firefighting or further reduce the consequences of the release ,
  • the object is achieved by use of an apparatus for producing compressed air foam wherein a compressed gas comprising a chemical extinguishing agent is used with the apparatus.
  • the advantageous effects according to the invention can also be obtained in known devices for the production of compressed air foam, if they are operated with a compressed gas comprising a chemical extinguishing agent.
  • a compressed gas comprising a chemical extinguishing agent.
  • FIG. 1 shows a device according to the invention for the production of pressure foam in schematic cross-section
  • Figure 2 shows another embodiment of a device for the production of
  • Compressed air foam according to a method of the invention in a perspective, schematic view.
  • FIG. 1 shows a device 10 for the production of compressed air foam in cross-section or schematically in a side view, in the cross-section of Figure 1 is a flow path of the extinguishing water along a central axis 12 of the device 10 shown from left to right, this course is not is set and also different, in particular curved, etc., can run.
  • the device 10 has an extinguishing water feed component 20 for supplying extinguishing water.
  • the extinguishing water inflow component 20 may be connected to a fire hose or the like on the left side. in the flow path of the fire-extinguishing water is followed by the extinguishing water inflow component 20 a foaming agent mixing component 30 for adding foaming agent to the extinguishing water.
  • the foaming agent admixing component 30 is designed as a Venturi nozzle, wherein the foaming agent is sucked in through an opening in the tapered cross section of the Venturi nozzle as it flows through the extinguishing water by means of negative pressure.
  • the extinguishing water admixed with foaming agent may already be provided in a suitable container (see Fig. 2) or admixed with a pump or bladder tank without venturi.
  • a foaming component 40 for foaming the foam with! mixed extinguishing water with the addition of compressed gas.
  • the foaming component 40 is designed in two stages, wherein initially a first foaming component 42 generates a first foaming.
  • the first foaming component 42 has, for example, a sieve or a chamber with a slightly higher external pressure, wherein the chamber ensures that there is always a gas / air mixing.
  • the first foaming component is followed by a second foaming component 44 for adding the compressed gas.
  • the second foaming component 44 integrates a foaming section with increasing cross-section, so that in the meantime an enlargement of the diameter, which improves foaming.
  • a plurality of valves 46 are arranged, through which the compressed gas, which comprises chemical extinguishing agent, is supplied.
  • the nozzles 46 are arranged in this example in three axially parallel planes, each of which a valve 46 are shown indicated on an upper and a lower side of the cross section.
  • the number and arrangement of the nozzles 46 is not limited to this, with the nozzles 46 preferably arranged rotationally symmetrically about the center axis 12 allowing extinguishing foam to be produced in a particularly uniform manner.
  • the device 10 has an application component 50, which is set up to dispense the foamed extinguishing foam.
  • Figure 2 shows a perspective, schematic view of an apparatus 10 for the production of compressed air foam.
  • a dispensing component 50 which is configured as a fire-extinguishing pistol and which can be removed from the housing shown via a fire hose 52.
  • An extinguishing agent container 32 and an extinguishing gas container 48 are connected via a blasting chamber head, which takes over the function of the foaming component 40, via the extinguishing hose 52 with the Ausbringkomponente 50.
  • the extinguishing gas cylinder 48 is already an extinguishing gas that comprises a chemical extinguishing agent, contain or it is einhelibar.
  • the compressed gas contained in the extinguishing gas cylinder 48 acts as a driving center! the foaming, for example, the content of the extinguishing agent container 32.
  • the extinguishing agent tank 32 already contained the extinguishing water admixed with foaming agent.
  • an extinguishing water supply to the designed as a mixing head component which then acts as Schaumffenzumischkomponente 30, are connected.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Extinguishing Compositions (AREA)

Abstract

La présente invention concerne un procédé pour produire de la mousse à air comprimé ainsi qu'un dispositif correspondant. Ledit procédé comprend les étapes consistant à prendre un mélange d'eau d'extinction d'incendie et d'agent moussant, et à faire mousser le mélange d'eau d'extinction d'incendie et d'agent moussant en y ajoutant du gaz comprimé, le gaz comprimé contenant un agent extincteur chimique. Le procédé et le dispositif selon l'invention permettent de produire une mousse d'extinction d'incendie efficace grâce à l'effet inhibiteur de l'agent extincteur chimique.
EP18759258.9A 2017-08-01 2018-07-31 Procédé et dispositif permettant de produire de la mousse d'extinction d'incendie à l'aide d'un gaz à pouvoir d'extinction Pending EP3661608A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017117412.5A DE102017117412A1 (de) 2017-08-01 2017-08-01 Verfahren und Vorrichtung zur Herstellung von Löschschaum mit löschfähigem Gas
PCT/EP2018/070812 WO2019025473A2 (fr) 2017-08-01 2018-07-31 Procédé et dispositif permettant de produire de la mousse d'extinction d'incendie à l'aide d'un gaz à pouvoir d'extinction

Publications (1)

Publication Number Publication Date
EP3661608A2 true EP3661608A2 (fr) 2020-06-10

Family

ID=63364035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18759258.9A Pending EP3661608A2 (fr) 2017-08-01 2018-07-31 Procédé et dispositif permettant de produire de la mousse d'extinction d'incendie à l'aide d'un gaz à pouvoir d'extinction

Country Status (4)

Country Link
US (1) US20200230450A1 (fr)
EP (1) EP3661608A2 (fr)
DE (1) DE102017117412A1 (fr)
WO (1) WO2019025473A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110384883A (zh) * 2019-07-08 2019-10-29 中国石油化工股份有限公司 一种正压移动式三相泡沫发生装置和方法
CN110339508A (zh) * 2019-07-08 2019-10-18 中国石油化工股份有限公司 一种石化罐区用三相泡沫发生和喷射装置
CN113134204A (zh) * 2020-01-19 2021-07-20 山东昊星洁士新材料科技有限公司 一种混合射流消防装置
EP4209251A4 (fr) * 2020-09-04 2024-03-20 Kim, Jung Gyu Dispositif de buse de lutte contre l'incendie du type à évacuation par aspiration de fumée et de gaz toxique
CN113577607B (zh) * 2021-08-06 2022-09-16 国网安徽省电力有限公司电力科学研究院 压缩空气泡沫灭火系统用空气混合器及灭火系统
US11934208B2 (en) * 2021-11-30 2024-03-19 Tyco Fire Products Lp Variable orifice proportioner
US20240139566A1 (en) * 2022-10-28 2024-05-02 Christopher Smith Fire Suppression Device and Method of Use Thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030047327A1 (en) * 2001-09-13 2003-03-13 Gilbert Daniel A. Fire suppression apparatus with variable aeration mixing rate nozzle
DE102004032020B4 (de) 2004-06-28 2006-11-30 Schmitz Gmbh Feuerwehr- Und Umwelttechnik Verfahren und Anordnung zur Herstellung von Druckluftschaum zur Brandbekämpfung und Dekontamination
AT503421B1 (de) * 2006-04-12 2007-10-15 Walter Unverricht Feuerlöscheinrichtung unter verwendung von löschschaum
US8613325B2 (en) * 2009-11-27 2013-12-24 James D. Guse Compressed gas foam system
WO2011085208A2 (fr) * 2010-01-07 2011-07-14 Elkhart Brass Manufacturing Company, Inc. Tube d'expansion de mousse pour gicleur

Also Published As

Publication number Publication date
US20200230450A1 (en) 2020-07-23
WO2019025473A2 (fr) 2019-02-07
WO2019025473A3 (fr) 2019-04-11
DE102017117412A1 (de) 2019-02-07

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