EP1789143B1 - Procede et systeme de production de mousse a air comprime pour la lutte contre les incendies et la decontamination - Google Patents

Procede et systeme de production de mousse a air comprime pour la lutte contre les incendies et la decontamination Download PDF

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Publication number
EP1789143B1
EP1789143B1 EP05755066.7A EP05755066A EP1789143B1 EP 1789143 B1 EP1789143 B1 EP 1789143B1 EP 05755066 A EP05755066 A EP 05755066A EP 1789143 B1 EP1789143 B1 EP 1789143B1
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EP
European Patent Office
Prior art keywords
foaming agent
additive
stream
water
foam
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Not-in-force
Application number
EP05755066.7A
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German (de)
English (en)
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EP1789143B8 (fr
EP1789143A2 (fr
Inventor
Tino KRÜGER
Günther DORAU
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SOGEPI SA
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SOGEPI SA
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Publication of EP1789143A2 publication Critical patent/EP1789143A2/fr
Application granted granted Critical
Publication of EP1789143B1 publication Critical patent/EP1789143B1/fr
Publication of EP1789143B8 publication Critical patent/EP1789143B8/fr
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    • 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 process for the production of compressed air foam for fire fighting and decontamination, in which a main water flow is mixed with a foaming agent and the water foaming agent mixture is foamed in a VerDumungsumble with a compressed air flow, and further relates to an arrangement for carrying out the process.
  • compressed air foam generation in the aforementioned type is from the publications US 4,474,680 A and DE 102 31 740 B3 known, the publication disclose compressed air foam generations, which provide a supply of additives to the compressed air foams from a plurality of storage containers.
  • compressed air should always be understood as meaning also extinguishable compressed gases.
  • the firefighting and decontamination of objects with compressed air foam have proven themselves in many applications.
  • ready-made application-specific mixtures of shampoo formers and certain additives are provided.
  • the invention is therefore an object of the invention to provide a method for compressed air foam production, which ensures a high efficiency in the type of fire or decontamination different conditions of use and application in the effect achieved and the amount of funds used and in terms of environmental impact, and low device technology effort to provide a facility for performing the method.
  • the basic idea of the invention is in other words that in the compressed air foam production, that is, directly at the place of use, in a stream supplied to the main water flow from a foaming agent or directly into the main water stream at least one particular additive is added to the respective type of fire or adapted to the respective decontamination purpose and ensures an optimal effect of the compressed air foam in terms of a fast and safe fire fighting or decontamination. It was found that this already the feed each a single special additive is sufficient and that in particular with the exactly metered separate introduction of the additive in the foam flow good mixing in the foaming agent and in particular a uniform, fine distribution in extinguishing or decontamination foam with the result of maximum effectiveness of the additive with low consumption and reduced Environmental pollution is guaranteed. In particular, so different types of fire and different and differently contaminated objects can be effectively combated or decontaminated.
  • the additive is first injected into an auxiliary and motive water stream, by sucking the respective additive according to the water jet pump principle, wherein a drawn from the main water flow for the extinguishing or decontamination agent auxiliary and motive water flow is generated by the same Zumischpumpe, which is also the foaming agent sucked from a foaming agent container.
  • the introduction of the additive and the foaming agent in a water jet already ensures a good premix and finally for a uniform distribution in the main water flow.
  • the admixing of foaming agent and additive takes place in different mixing ratios, in dependence on a pressure and a water volume flow control of the auxiliary and motive water flow in conjunction with the adjustable speed of the admixing pump.
  • a pressure and a water volume flow control of the auxiliary and motive water flow in conjunction with the adjustable speed of the admixing pump.
  • an antifreeze or detergent can be introduced into the system.
  • the foam pressure and thus the quality of the compressed air foam produced with the additive and the foaming agent can also be influenced by modifying the foaming time with the aid of a valve arrangement.
  • the inventive arrangement for carrying out the method comprises in the case of Additivzumischung to the foaming agent integrated into the main water flow mixer, in which the main water flow is mixed with the additive-water-foaming agent mixture.
  • an additive container is provided which is in operative connection with the admixing pump.
  • the admixing pump is connected to the main water flow for providing the auxiliary and motive water flow via a bypass line, to which the additive container and then the foaming agent container are connected in the flow direction first via a Venturi admixer.
  • the admixing pump is preferably driven by a pneumatic motor, which removes the required drive air from the main air flow for the compressed air foaming and which can be controlled via an air pressure regulator and an air volume regulator.
  • a pneumatic motor which removes the required drive air from the main air flow for the compressed air foaming and which can be controlled via an air pressure regulator and an air volume regulator.
  • the pneumatic motor and a speed-controlled DC motor can be used, for which also the zero offset described below, the non-stalling motors can be applied.
  • the Venturi-Zumischer are assigned a pressure sensor and a water pressure regulator upstream and downstream of a water volume flow regulator. About the respective pressure conditions and flow rates can be controlled by the required foaming agent and additive content can be adjusted.
  • the mixer is provided with two injection nozzles with different k-value.
  • compressed air foams can be provided according to the particular application, that is on the type of fire or decontamination, mixed with a locally mixed in different magnitude, evenly distributed in the foam additive and so one enable efficient firefighting and decontamination.
  • the system is also simple in design, since the energy sources compressed air and water, which are required anyway for the generation of compressed foam, are used to operate the admixing system for the foaming agent and additive. In each case the same foaming only different additives need to be kept ready, but - mixed without demixing or clumping - fine and evenly distributed in the foaming agent and distributed equally contained in extinguishing or decontamination foam and thus can develop their full effect.
  • the system is supplied by a fire pump or a pressure water reservoir (not shown) water, which passes through a water filter 2, a water pressure regulator 3, a water volume flow sensor 4 and a water pressure sensor 5 in a mixer 6.
  • a mixture of a commercial foaming agent (SB) and a different fires or Dekontaminierungser Morrisissen for the specific application specific second component (Add) is supplied.
  • the water volume flow mixed with the two components (foaming agent and additive) passes via a first and a second water volume flow control valve 8 or 9 into a first or second expansion section 10 and 11, in which the respective water mixture is foamed with the aid of compressed air.
  • the first or second compressed-air foam produced in this way flows via foam pressure sensors 12 or 13 and electro-pneumatically controlled valves 14, 15 and 16, 17, which form a closed control loop with the controller 1 for adjusting the foam consistency and thus the respective foam quality respective foam ejection device (not shown).
  • the supply of compressed air into the VerMmungsumblen 10, 11 carried by a compressed air source or a compressor (not shown) via an air filter 18, an air pressure regulator 19, an air pressure sensor 20 and the respective VerDmungsplex 10, 11 respectively upstream first and second air flow control valves 21st
  • the mixer 6 in the water volume flow is a foaming agent and adapted to the particular application additive, with a certain Brand targeted and effective than previously can be combated, injected.
  • the admixture takes place from a foam container 23 and an additive container 24, which was filled prior to use with an adapted to the type of fire or decontaminated substances and highly effective, but not permanently and homogeneously miscible additive with the foaming agent.
  • the foaming agent tank 23 and the additive tank 24 are connected to a bypass line 25 which branches off from the total water volume flow behind the water filter 2 and ends at the other end in the injection nozzles 7 of the mixer 6.
  • a Zumischpumpe 26 is involved, in the Bypas Gustav 25 a water pressure regulator 27, a Venturi 28 and a water volume flow controller 29 are connected upstream.
  • the additive container 24 is connected via a valve 30, while a delivery line from the Schaumsentner notioner 23 before the admixing pump 26 opens directly into the bypass line 25.
  • a valve 31 for flushing and venting the admixing pump 26 and a flow meter 32 are involved.
  • the admixing pump 26 is driven by a pneumatic motor 33, which is connected via an air pressure regulator 34 for adjusting the operating pressure and an air volume flow control valve 35 for controlling the engine speed to the compressed air supply behind the air filter 18.
  • foaming agent with additive is injected into the funded by the mixer 6 water volume flow.
  • the foaming agent-additive-water mixture flows via the water volume flow control valve 8 and / or 9 and the Druckbuchschaumerzeuger 10 and / or 11, in the air volume flow control valve 21 and / or 22 compressed air with predetermined pressure and volume parameters is introduced.
  • the foam quality of the compressed air foam (not shown) by means of foam ejection devices depends on the flow rate and thus the residence time of the foam in the expansion section 10, 11 and is determined by the foam pressure determined by the foam pressure sensors 12, 13 with the valves 14, 15 and 16, respectively. 17 regulated (foam pressure control).
  • the rotational speed of the pneumatic motor 33 of the admixing pump 26 is controlled via the air volume flow control valve 35.
  • the control target signal for the engine speed forms the controller 1 in connection with the pump characteristic from the setpoint specification for the foaming / additive admixing rate and the actual value of the water volume flow sensor 4.
  • the pressure sensor 32 measures the pressure difference between the output pressure at the admixing pump 26 and the flow pressure of the water at the inlet of the mixer 6.
  • the foaming agent / additive mixture is injected via the injection nozzles 7 in the water stream.
  • the volume flows flowing through the respective injection nozzle 7 as a function of the differential pressure are stored in the controller 1 as a parameter table.
  • a pressure-dependent mixing control of the foaming agent and of the additive is realized by way of the setpoint specifications in comparison with the water volume flow determined with the water volume flow sensor 4, the speed control of the mixing pump 26, the abovementioned pressure difference measurement and the parameter tables stored in the controller 1.
  • the admixture of smaller or defined within certain limits volume flows with an injection nozzle 7 with a small k-value, while at higher flow rates via the valve 36, the second injection nozzle 7 is switched on with a larger k value and thus a maximum volume flow is secured to the admixture of foaming agent-additive mixture.
  • the respective compressed-air foam generator 10, 11 is preceded by a volume flow control valve 8, 9 for the water-foaming agent-additive mixture and an air volume flow control valve 21, 22, in order to be able to provide very small volume flows, in particular during decontamination.
  • the admixture of the foaming agent and the other - according to the respective fire or the respective Dekontaminationsaufgabe specific - component is carried out with the admixing pump 26 - is - driven to adjust the flow - with the over the air flow control valve 35 in the speed controllable pneumatic motor 33.
  • About the connected to the main water flow bypass line is sucked by the admixing pump 26 - via the water pressure regulator 27 and the Venturi 28 and the water volume flow regulator 29 - water.
  • the pneumatic motors are usually designed as Druckbuchlamellenmotore are not stalled at a certain speed, ie stop at low speeds with high torques, so that on the one hand in an accident, no mechanical damage to be feared, on the other hand, the Zumischpumpen not directly continuously from standstill can be driven to the maximum speed, in the Bypastechnisch on the suction side of the admixing pump 26 is a defined by the water pressure regulator 27 and the water volume flow controller 29 water volume flow injected in a size that would promote the Zumischpumpe 26 at AbBrugecard or AbBrugecompiere the pneumatic motor 33. In order to the injected water volume flow is allowed to flow, the admixing pump 26 must rotate at the stall speed.
  • the auxiliary water volume flow can be shut off by closing the water volume flow regulator 29 and the entire delivery volume of the admixing pump 26 can be used to convey foam.
  • the zero offset of the non-stalling pneumatic motor 33 caused by the arrangement described above can equally be used for speed-controlled DC motors that can be used instead of the pneumatic motor.
  • auxiliary water flow at a set pressure by the water pressure regulator 27 Venturi 28 is sucked under reducing the differential pressure with the help of the water volume flow controller 29 from the additive tank 24 with the valve 30 open the foaming agent in case of need zuzumischende second component proportional to the differential pressure and with the auxiliary water flow intensively mixed, if by means of the air volume flow control valve at the same time the speed of the admixing pump 26 is increased.
  • the admixing pump 26 sucks simultaneously with the auxiliary water volume flow and the additive also the foaming agent from the foaming agent tank 23, wherein both partial streams are mixed intensively with each other.
  • the main water flow in the mixer 6 can thus at the same time a foaming agent and additionally a suitable for the specific application case additive are added, so that with a particular special compressed air foam targeted, highly effective fire fighting or decontamination is possible.
  • the foaming agent and the additive can be mixed in the respectively required order of magnitude in a variable ratio.
  • the foaming agent and the additive can also be mixed in each case alone, for the foaming agent in the size between zero and a maximum relative to the delivery volume of the mixing pump 26 and for the additive up to 1.6 times the auxiliary flowing through the Venturi 28 and motive water flow.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Nozzles (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Accessories For Mixers (AREA)
  • Fire-Extinguishing Compositions (AREA)

Claims (11)

  1. Procédé de production de mousse à air comprimé pour la lutte contre l'incendie et la décontamination, dans lequel un flux d'eau principal (A) est mélangé à un flux d'agent moussant et le mélange eau-agent moussant est soumis à un flux d'air comprimé (B) dans une section de moussage (10, 11), dans lequel au moins un additif (Add) adapté à la destination respective et spécifique pour la lutte contre l'incendie ou la décontamination, est injecté dans le flux d'agent moussant et/ou le flux d'eau principal (A), et dans lequel lors du mélange de l'additif au flux d'agent moussant, ce flux est généré par une pompe de mélange (26) entraînée pneumatiquement ou électriquement et reliée à un réservoir d'agent moussant (23), ladite pompe aspire en outre un flux d'eau auxiliaire et propulseur (C) dans le flux d'eau principal (A) et injecte celui-ci dans la pompe de mélange (26) pour en décaler le point zéro, l'additif (Add) étant d'abord aspiré dans un réservoir (24) séparé au moyen du flux d'eau auxiliaire et propulseur (C), ensuite mélangé avec ce flux et pompé dans le mélange additif-eau de l'agent moussant.
  2. Procédé selon la revendication 1, caractérisé en ce que l'agent moussant (SB) et l'additif (Add) sont injectés dans le flux d'eau principal (A) dans un rapport de mélange variable avec le flux d'eau auxiliaire et propulseur (C), leur part respective étant comprise entre zéro et une valeur maximale.
  3. Procédé selon la revendication 2, caractérisé en ce que le flux d'eau auxiliaire et propulseur (C) est réglé par une régulation de pression et de débit volumique d'eau en relation avec la vitesse de rotation de la pompe de mélange (26), l'agent moussant (SB) et l'additif (Add) étant mélangés l'un à l'autre en proportion variable dans le flux d'eau auxiliaire et propulseur (C) en fonction de la pression différentielle mesurée pour l'additif (Add) par un mélangeur de type Venturi (28) et de la vitesse de rotation de la pompe de mélange (26).
  4. Procédé selon la revendication 1, caractérisé en ce que sélectivement l'agent moussant (SB) seul, dans une quantité comprise entre zéro et une valeur maximale relative au volume de débit de refoulement de la pompe de mélange (26), ou l'additif (Add) seul est mélangé dans le flux d'eau principal (A) avec le flux d'eau auxiliaire et propulseur (C).
  5. Procédé selon la revendication 1, caractérisé en ce que la qualité de la mousse à air comprimé formée au moyen de l'agent moussant (SB) et de l'additif (Add) est en outre réglée, quant à sa vitesse d'écoulement et au temps de séjour dans la section de moussage (10, 11) du générateur de mousse à air comprimé, par régulation de la pression de mousse au moyen de vannes (14, 15, 16, 17).
  6. Dispositif pour l'exécution du procédé selon la revendication 1, avec un mélangeur (6) intégré au flux d'eau principal (A) pour un agent moussant (SB) et une section de moussage (10, 11) traversée par le mélange eau-agent moussant, où aboutit un flux d'air comprimé principal (B) pour le moussage du mélange eau-agent moussant, ainsi qu'une pompe de mélange (26) entraînée par un moteur pneumatique (33) ou un moteur à courant continu à régulation de vitesse pour l'aspiration et le refoulement dans le mélangeur (6) de l'agent moussant (SB) contenu dans un réservoir d'agent moussant (23), caractérisé par un réservoir d'additif (24) relié de manière complémentaire à la pompe de mélange (26) et rempli d'un additif spécifique pour la lutte contre l'incendie ou la décontamination, et où lors du mélange de l'additif au flux d'agent moussant la pompe de mélange (26) est reliée au flux d'eau principal (A) par une conduite de dérivation (25) et est traversée par un flux d'eau auxiliaire et propulseur (C), le réservoir d'agent moussant (23) et le réservoir d'additif (24) étant raccordés à la conduite de dérivation par un mélangeur de type Venturi (28) intégré à la conduite de dérivation ; un capteur de pression (37) étant affecté au mélangeur de type Venturi, et un régulateur de pression d'eau (27) étant présenté en amont et un régulateur de débit volumique d'eau (30) en aval du mélangeur de type Venturi.
  7. Dispositif selon la revendication 6, caractérisé en ce qu'un moteur pneumatique (33) entraînant la pompe de mélange (26) est raccordé au flux d'air principal (B) pour la préparation d'un flux d'air d'entraînement (D), un régulateur de pression d'air (34) et une vanne de réglage de débit volumique d'air (35) étant intégrés à une conduite d'amenée pour le flux d'air d'entraînement (D).
  8. Dispositif selon la revendication 6, caractérisé en ce qu'une vanne (30) pour la fermeture de la conduite de connexion est intégrée à une conduite de connexion entre le mélangeur de type Venturi (28) et le réservoir d'additif (24).
  9. Dispositif selon la revendication 6, caractérisé en ce qu'un capteur de pression (32) et une vanne (31) raccordée à un récipient collecteur sont disposés dans la conduite de connexion entre la pompe de mélange (26) et le mélangeur (6).
  10. Dispositif selon la revendication 6, caractérisé en ce qu'au moins deux buses d'injection (7) de valeurs k différentes raccordées à la conduite de connexion avec la pompe de mélange (26) sont affectées au mélangeur (6), et en ce qu'une vanne (36) est montée en amont de la buse d'injection (7) de valeur k supérieure.
  11. Dispositif selon la revendication 6, caractérisé en ce qu'un capteur de pression de mousse (12, 13) et un dispositif de vanne (14, 15 ; 16, 17) pour le réglage de la pression de mousse sont montés en aval du générateur de mousse à air comprimé (10, 11).
EP05755066.7A 2004-06-28 2005-05-19 Procede et systeme de production de mousse a air comprime pour la lutte contre les incendies et la decontamination Not-in-force EP1789143B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004032020A DE102004032020B4 (de) 2004-06-28 2004-06-28 Verfahren und Anordnung zur Herstellung von Druckluftschaum zur Brandbekämpfung und Dekontamination
PCT/DE2005/000959 WO2006000177A2 (fr) 2004-06-28 2005-05-19 Procede et systeme de production de mousse a air comprime pour la lutte contre les incendies et la decontamination

Publications (3)

Publication Number Publication Date
EP1789143A2 EP1789143A2 (fr) 2007-05-30
EP1789143B1 true EP1789143B1 (fr) 2015-08-12
EP1789143B8 EP1789143B8 (fr) 2015-12-30

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EP05755066.7A Not-in-force EP1789143B8 (fr) 2004-06-28 2005-05-19 Procede et systeme de production de mousse a air comprime pour la lutte contre les incendies et la decontamination

Country Status (7)

Country Link
US (1) US8701789B2 (fr)
EP (1) EP1789143B8 (fr)
CN (1) CN1972731B (fr)
BR (1) BRPI0510825B1 (fr)
CA (1) CA2565290C (fr)
DE (1) DE102004032020B4 (fr)
WO (1) WO2006000177A2 (fr)

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CN117695568B (zh) * 2024-02-05 2024-05-07 新乡市金升消防科技有限公司 一种环保型泡沫比例混合装置

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DE102017117412A1 (de) 2017-08-01 2019-02-07 Minimax Gmbh & Co. Kg Verfahren und Vorrichtung zur Herstellung von Löschschaum mit löschfähigem Gas

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WO2006000177A3 (fr) 2006-05-11
DE102004032020A1 (de) 2006-01-19
DE102004032020B4 (de) 2006-11-30
BRPI0510825A (pt) 2007-11-27
US20070209807A1 (en) 2007-09-13
EP1789143B8 (fr) 2015-12-30
BRPI0510825B1 (pt) 2017-12-19
CN1972731B (zh) 2012-01-18
CA2565290A1 (fr) 2006-01-05
CA2565290C (fr) 2010-03-16
WO2006000177A2 (fr) 2006-01-05
CN1972731A (zh) 2007-05-30
EP1789143A2 (fr) 2007-05-30
US8701789B2 (en) 2014-04-22

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