EP4041443B1 - Système de mélange conçu pour des dispositifs d'extinction d'incendie et procédé pour faire fonctionner un tel système de mélange - Google Patents

Système de mélange conçu pour des dispositifs d'extinction d'incendie et procédé pour faire fonctionner un tel système de mélange Download PDF

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Publication number
EP4041443B1
EP4041443B1 EP20789026.0A EP20789026A EP4041443B1 EP 4041443 B1 EP4041443 B1 EP 4041443B1 EP 20789026 A EP20789026 A EP 20789026A EP 4041443 B1 EP4041443 B1 EP 4041443B1
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EP
European Patent Office
Prior art keywords
admixing
extinguishing agent
pump
line
agent additive
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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.)
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Application number
EP20789026.0A
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German (de)
English (en)
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EP4041443A1 (fr
Inventor
Andreas Hulinsky
Alexander Schlepp
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Firedos GmbH
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Firedos GmbH
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Publication of EP4041443A1 publication Critical patent/EP4041443A1/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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B01F23/451—Mixing liquids with liquids; Emulsifying using flow mixing by injecting one liquid into another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/49—Mixing systems, i.e. flow charts or diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7176—Feed mechanisms characterised by the means for feeding the components to the mixer using pumps
    • B01F35/717613—Piston pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/83—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices
    • B01F35/831—Forming a predetermined ratio of the substances to be mixed by controlling the ratio of two or more flows, e.g. using flow sensing or flow controlling devices using one or more pump or other dispensing mechanisms for feeding the flows in predetermined proportion, e.g. one of the pumps being driven by one of the flows

Definitions

  • the present invention relates to a proportioning system for fire extinguishing systems.
  • a fire extinguishing system in the sense of the present invention is a system having a pump, a line system and a foam agent admixing system with which an extinguishing agent can be dispensed, in particular through nozzles, foam pipes or foam generators.
  • the fire extinguishing system can be a stationary system such as a fire extinguishing system in a tank farm with a permanently mounted so-called monitor, i.e. H. a large jet pipe, or a permanently installed sprinkler system in a building. But it can also be a mobile system on a vehicle or roll-off container.
  • Such fire extinguishing systems are usually operated with water as an extinguishing agent.
  • an extinguishing agent additive here a foam agent
  • the extinguishing agent-extinguishing agent additive mixture (the so-called "premix") is foamed in a nozzle by supplying air and applied to the fire to be extinguished.
  • the volume ratio of the extinguishing agent additive to the extinguishing agent is typically between 0.5% and 6%.
  • extinguishing agent additive that can be mixed with the extinguishing agent is a wetting agent, which reduces the surface tension of the extinguishing agent, in particular the extinguishing water. This is advantageous, for example, when fighting forest fires because the extinguishing water can wet larger areas, especially on the leaves of trees, and can therefore be used more efficiently. Furthermore, the reduced surface tension allows the extinguishing water to penetrate deeper into the forest floor, for example in order to extinguish deeper pockets of embers.
  • foaming agents that can also be used as wetting agents (if necessary with other admixing rates, in particular with a minimum admixing rate of 0.1%).
  • the invention is described below in part using the example of water as an extinguishing agent and foam agent as an extinguishing agent additive. However, this should not be construed as limiting.
  • the invention can also be used when admixing any extinguishing agent additives to any extinguishing agent.
  • both the extinguishing agent and the extinguishing agent additive can be provided in an extinguishing agent tank or in an extinguishing agent additive tank or via an extinguishing agent supply line or via an extinguishing agent additive supply line.
  • an extinguishing agent pump is also required, which conveys the extinguishing agent from the extinguishing agent tank, pressurizes it and feeds it to the admixing system.
  • the components just mentioned are not part of the proportioning system itself.
  • the mixture to be produced from the extinguishing agent and the extinguishing agent additive i.e. H.
  • the premix is then passed in the form of a premix stream through a foaming nozzle, in which ambient air is sucked in through the premix stream and mixed with the premix. This activates the foam agent in the premix and foams the premix so that an extinguishing agent foam emerges from the foaming nozzle and can be applied to the fire.
  • the air required to foam the foam agent can also be supplied to the premix in the form of compressed air.
  • a CAFS system Compressed Air Foam System
  • the admixing system has an admixing pump through which the extinguishing agent additive can be conveyed and mixed with the extinguishing agent.
  • the admixing pump is driven by a motor, which in turn is driven by a flow of the extinguishing agent itself.
  • the admixing system thus has a water motor that is driven by the extinguishing water flow.
  • the output shaft of the water motor is coupled to the input shaft of the proportioning pump, for example by a clutch.
  • the extinguishing agent additive conveyed by the admixing pump is then passed through an extinguishing agent additive output line from the admixing pump into an admixing line and mixed there with the extinguishing agent stream in order to generate the premix.
  • This structure of the admixing system in which the admixing pump is driven by the extinguishing agent flow that is already present, has the advantage that the admixing pump does not require any drive energy, in particular electricity, from outside, which means that the admixing system is very fail-safe. Furthermore, the delivery rate of the admixing pump is essentially proportional to the speed of the motor, which in turn is essentially proportional to the flow rate of the extinguishing agent stream. In this way, a substantially constant admixing rate is automatically achieved without the need for further control or regulation devices.
  • a proportioning system for fire extinguishing systems it is desirable to be able to set different values for the proportioning rate. This makes it possible, for example, to use different extinguishing agent additives that require different admixing rates (for example 6% or 4%), or, as mentioned above, the same extinguishing agent additive can be used once as a foam agent and by changing the admixing rate (for example from 2% to 0.1%) be used once as a wetting agent.
  • a structurally simple way to change the admixing rate in a admixing system with the structure described above is to design the admixing pump as a piston pump, in particular as a plunger pump, and to specifically reduce the delivery rate of the piston pump by switching off one or more cylinders. Since the admixing rate is proportional to the delivery rate of the admixing pump, this also results in a corresponding one Reduction of the mixing rate. In the case of a piston pump with six cylinders, the mixing rate can be reduced from 6% to 5% by switching off one cylinder or from 6% to 4% by switching off two cylinders.
  • the "switching off" of a specific cylinder is to be understood as meaning that no extinguishing agent additive conveyed by this cylinder reaches the extinguishing agent additive output line directly and is therefore mixed with the extinguishing agent in the admixing line.
  • the extinguishing agent additive conveyed by the cylinder in question can be diverted and conveyed back into the extinguishing agent additive tank or into the extinguishing agent additive inlet line, so that it is not lost, but is available for renewed delivery by the admixing pump and admixture with the extinguishing agent.
  • the second option mentioned for the so-called cylinder deactivation is preferred because it is easier to control the extinguishing agent additive flow than to mechanically decouple and shut down the pistons from one or more cylinders of the piston pump. Therefore, only this second option for returning the extinguishing agent additive to the admixing pump will be considered below.
  • the admixing rate can be reduced in this way either from 3% to 2% by switching off one cylinder or from 3% to 1% by switching off two cylinders.
  • the invention is therefore based on the object of implementing cylinder deactivation more easily and safely in an admixing system for fire extinguishing systems with the structure described above.
  • the invention is based on an admixing system for fire extinguishing systems for admixing an extinguishing agent additive, in particular a foam agent, to an extinguishing agent, in particular water.
  • the admixing system has a motor that can be driven by a flow of extinguishing agent, in particular a water motor, with an input for supplying the extinguishing agent to the engine, in particular from an extinguishing agent tank or from an extinguishing agent supply line, an output for discharging the extinguishing agent from the engine and an output that can be driven by the engine output shaft.
  • a flow of extinguishing agent in particular a water motor
  • the admixing system also has an admixing pump for conveying the extinguishing agent additive with a drive shaft which is coupled to the output shaft of the motor, an input for providing the extinguishing agent additive, in particular from an extinguishing agent additive tank or from an extinguishing agent additive supply line, and at least one output for discharging the extinguishing agent from the admixing pump promoted extinguishing agent additive.
  • the admixing system has an extinguishing agent additive input line with a first, input-side end and a second, pump-side end, the pump-side end being fluidly connected to the inlet of the admixing pump.
  • the admixing system has an admixing line with a first, engine-side end and a second, output-side end, the engine-side end being fluidly connected to the output of the engine.
  • the admixing system has an extinguishing agent additive output line with a first, pump-side end and a second, admixing-line-side end, the pump-side end being connected in a fluid-conducting manner to the at least one outlet of the admixing pump and the admixing-line-side end to the admixing line at an admixing point.
  • the admixing pump is a piston pump, in particular a plunger pump, with several cylinders and has at least two outlets on, whereby each output is connected in a fluid-conducting manner to at least one cylinder and each cylinder to exactly one output.
  • the admixing system further has a reflux line with a first, pump outlet-side end and a second, pump-inlet-side end, with at least a first, reflux-capable output of the admixing pump being fluidly connected via a switching device either to the pump-output-side end of the reflux line or to the pump-side end of the extinguishing agent additive output line is, the remaining, non-backflow-capable outputs of the admixing pump are connected in a fluid-conducting manner to the pump-side end of the extinguishing agent additive output line and the pump-inlet end of the return flow line is connected in a fluid-conducting manner to the extinguishing agent additive input line or to the inlet of the admixing pump.
  • each returnable output preferably has its own switching device.
  • two points in the admixing system are "connected in a fluid-conducting manner" can in the present context mean that the two points are directly connected in such a way that a fluid, in particular an extinguishing agent or an extinguishing agent additive, can be transferred from one of the two points to the other point can flow.
  • a fluid in particular an extinguishing agent or an extinguishing agent additive
  • This can be the case in particular if both points are on a line or at the end of a line and the pipes implementing the lines merge directly into one another at the two points - which therefore effectively coincide - so that the interior spaces of the pipes involved have a common, form a continuous cavity.
  • two points in the admixing system are "connected in a fluid-conducting manner" can also mean that further devices, in particular pipes or pipe networks, are arranged between the two points, so that the fluid can flow through these devices from one point to the other.
  • the flow of the fluid is preferably not affected by flow-controlling or flow-influencing devices such as valves, flaps, pumps or the like.
  • the cylinder deactivation is implemented in such a way that only the pump head cover of the admixing pump itself has to be modified, but the majority of the pump can be used in its original state. This increases the operational reliability of the proportioning system.
  • the implementation of the cylinder deactivation is also structurally simple, since essentially only the switching device and the return flow line have to be provided as additional elements. In this way, the object on which the invention is based is achieved.
  • a pressure-maintaining valve is arranged in the return flow line to generate a counterpressure on the extinguishing agent additive flowing through the return flow line.
  • the at least one returnable outlet is fluidly connected to exactly one cylinder.
  • the at least one returnable outlet can also be connected in a fluid-conducting manner to two, three or more than three cylinders.
  • the admixing pump has two, three or more than three reflux-capable outlets. If each returnable output has its own switching device, a corresponding number of different admixing rates can be set by switching several switching devices in the direction of the return flow line. If, for example, in a proportioning pump with six cylinders each cylinder is fluidly connected to its own return-flow-capable outlet, the proportioning rate can be increased from 6% to 5%, 4%, 3% by switching off one, two, three, four or five cylinders. , 2% and 1% respectively.
  • the admixing pump has exactly three cylinders. In practice, this represents a good compromise for a proportioning system between the delivery capacity of the proportioning pump and its costs as well as the flexibility in setting the proportioning rate. This means that in In this case, by switching off one or two cylinders, the admixing rate can be reduced, for example, from 3% to 2% or 1% if all three cylinders have the same volume.
  • the admixing pump can of course also have a different number of cylinders, in particular exactly one, exactly two, exactly four or more than four cylinders.
  • the switching device is a directional control valve, in particular a ball valve.
  • This is a structurally simple element for switching fluid flows in a pipe system.
  • the switching device can be switched over by means of an electric drive.
  • the admixing rate can also be changed by a remote control device such as a control center of a fire extinguishing center by actuating the electrical drive of the switching device via a wired or wireless connection from the control device and thereby switching off one or more cylinders in the admixing pump. their shutdown is lifted again.
  • the admixing system 1 is supplied with extinguishing water from an extinguishing water tank (not shown).
  • the extinguishing water is pumped out of the extinguishing water tank by an extinguishing water pump 27 and filtered through a filter 32.
  • the water motor 2 preferably works according to the reciprocating piston or rotation principle.
  • the extinguishing water reaches the motor-side end 11 of the admixing line 10 and is from there passed through the admixing line 10 to its output end 12, to which the consumer or consumers of the fire extinguishing system, such as one or more sprinkler nozzles or also connect a frothing nozzle and an extinguishing monitor (neither shown).
  • the consumer or consumers of the fire extinguishing system such as one or more sprinkler nozzles or also connect a frothing nozzle and an extinguishing monitor (neither shown).
  • Part of the extinguishing water conveyed by the extinguishing water pump 27 is branched off into a flushing line 47 before (i.e. upstream) the water motor 2, provided that the shut-off valve 18 arranged therein is open, filtered in a filter 19 and sent to an admixing pump 6 as flushing water via a check valve 20 whose input 7 is supplied.
  • the admixing pump 6 can be flushed with extinguishing water without having to keep a separate supply of flushing water for this purpose.
  • the output shaft 5 of the water motor 2 is connected to the drive shaft 9 of the admixing pump 6 via a clutch 25. With the output shaft 5 of the water motor 2, the drive shaft 9 of the admixing pump 6 is also set in a rotational movement and in turn drives the admixing pump 6.
  • the admixing pump 6 is preferably a plunger pump or an adjustable plunger pump with three cylinders.
  • the extinguishing agent additive in particular a foam agent, is provided in the extinguishing agent additive tank 24.
  • the extinguishing agent additive passes through an extinguishing agent additive input line 35 from its inlet end 36, which is fluidly connected to the extinguishing agent additive tank 24, via a shut-off valve 39, a sight glass 17, through which the proper delivery of the extinguishing agent additive can be checked, and a check valve 33 to the pump-side end 37 the extinguishing agent additive input line 35 and thus to the inlet 7 of the admixing pump 6.
  • the check valve 33 prevents flushing water from the flushing line 47 from getting into the extinguishing agent additive input line 35.
  • the extinguishing agent additive is sucked in by the admixing pump 6, pressurized by it and conveyed to the outlets 8a, 8b of the admixing pump 6.
  • the admixing pump 6 is protected from excessive pressure by a pressure relief valve 38.
  • the admixing pump 6 has two outputs 8a and 8b.
  • the non-returnable outlet 8a is fluidly connected to the third cylinder and the returnable outlet 8b to the first and second cylinders of the admixing pump 6.
  • the non-returnable outlet 8a can also be connected to two cylinders, such as the second and third cylinders, and the returnable outlet 8b can be connected to one cylinder, such as the first cylinder.
  • the extinguishing agent additive conveyed by the third cylinder first reaches the 3-way "admixing/returning" ball valve 34 via a delivery line 40 for the third cylinder, the function of which is described in more detail below and in the corresponding one “Mixing” position of the 3-way ball valve 34 into the pump-side end 14 of the extinguishing agent additive output line 13.
  • the delivery line 40 for the third cylinder can be vented via a vent valve 46, with any air contained in the extinguishing agent additive being able to flow out into the ambient air via a hose 42 and an overflow opening 43.
  • the Pressure of the extinguishing agent additive in the delivery line 40 can be monitored via a pressure gauge 45, which is connected to the delivery line 40 via a stopcock 21.
  • a pressure compensation tank 22 is connected to the delivery line 40.
  • the pressure compensation tank 22 acts as a pulsation damper and dampens pulsations in the extinguishing agent additive flow, which are generated by the oscillating movement of the pistons of the admixing pump 6, which is preferably designed as a plunger pump.
  • the pressure compensation tank 22 can in particular be a pressure wind vessel or a tubular membrane pulsation damper.
  • the extinguishing agent additive reaches the admixing line end 15 of the extinguishing agent additive output line 13 via a check valve 26, where it is fluidly connected to the admixing line 10.
  • the mixing point 16 is also located there, where the extinguishing agent additive is mixed with the extinguishing water.
  • the check valve 26 prevents extinguishing water from reaching the extinguishing agent additive output line 13 via the admixing point 16.
  • the extinguishing agent additive conveyed by the first and second cylinders passes via a first delivery line 41a for the first and second cylinders to a “cylinder switch-off” ball valve 28.
  • the extinguishing agent additive passes over a second delivery line 41b for the first and second cylinders also to the 3-way ball valve "mixing/return" 34 and from there, when the 3-way ball valve 34 is in the appropriate position, in the same way as the extinguishing agent additive conveyed by the third cylinder Extinguishing agent additive output line 13 and is mixed into the extinguishing water in the admixing line 10 at the admixing point 16.
  • the volume ratio between the admixed extinguishing agent additive and the extinguishing water, ie the admixing rate is essentially constant unless the cylinder deactivation is used.
  • the admixing rate is, for example, 3%.
  • the extinguishing agent additive conveyed by the first and second cylinders passes from the first delivery line 41a into the pump outlet end 30 of the return flow line 29, through the return flow line 29 to its pump inlet end 31 and enters there again the proportioning pump 6, either at its inlet 7 or - as in Fig. 1 shown - at a separate inlet of the admixing pump 6.
  • a pressure maintaining valve 23 generates a counterpressure on the extinguishing agent additive flowing through the return flow line 29, which generates essentially the same pressure conditions in the first and second cylinders as in the third cylinder of the admixing pump 6 and in this way ensures a quiet Run of the proportioning pump 6 ensures.
  • the admixing rate is, for example, only 1% instead of 3%, since only the third cylinder delivers extinguishing agent additive into the extinguishing agent additive output line 13 and thus only a third of the maximum amount of extinguishing agent additive is mixed into the extinguishing water per unit of time.
  • the 3-way ball valve 34 can also be brought into the “return” position. In this position of the 3-way ball valve 34, the extinguishing agent additive from the delivery line 40 for the third cylinder and possibly from the second delivery line 41b for the first and second cylinders is not directed to the admixing point 16, but back into the extinguishing agent additive tank via a return line 44 24.
  • the admixing rate can be measured in this operating mode of the admixing system 1 by further measuring devices (not shown). However, the extinguishing agent additive is not actually mixed into the extinguishing water and is therefore not lost during the control measurement.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Nozzles (AREA)

Claims (10)

  1. Système d'ajout et de mélange (1) pour des installations d'extinction d'incendie pour la production d'un prémélange de mélange agent extincteur/additif d'agent extincteur par ajout et mélange d'un additif d'agent extincteur, en particulier d'un agent moussant, à un agent extincteur, en particulier de l'eau, avec
    - un moteur (2) pouvant être entraîné par un flux d'agent extincteur, en particulier un moteur à eau, avec une entrée (3) pour l'amenée de l'agent extincteur au moteur (2), en particulier à partir d'un réservoir d'agent extincteur ou à partir d'une conduite d'alimentation d'agent extincteur, une sortie (4) pour l'évacuation de l'agent extincteur du moteur (2) et un arbre de sortie (5) pouvant être entraîné par le moteur (2),
    - une pompe d'ajout et de mélange (6) pour transporter l'additif d'agent extincteur, avec un arbre d'entraînement (9), lequel est couplé à l'arbre de sortie (5) du moteur (2), une entrée (7) pour la fourniture de l'additif d'agent extincteur, en particulier à partir d'un réservoir d'additif d'agent extincteur (24) ou à partir d'une conduite d'alimentation d'additif d'agent extincteur, et au moins une sortie (8a, 8b) pour l'évacuation de l'additif d'agent extincteur transporté par la pompe d'ajout et de mélange (6),
    - une conduite d'entrée d'additif d'agent extincteur (35) avec une première extrémité côté entrée (36) et une deuxième extrémité côté pompe (37), dans lequel l'extrémité côté pompe (37) est en liaison fluidique avec l'entrée (7) de la pompe d'ajout et de mélange (6),
    - une conduite d'ajout et de mélange (10) avec une première extrémité côté moteur (11) et une deuxième extrémité côté sortie (12), dans lequel l'extrémité côté moteur (11) est en liaison fluidique avec la sortie (4) du moteur (2),
    - une conduite de sortie d'additif d'agent extincteur (13) avec une première extrémité côté pompe (14) et une deuxième extrémité côté conduite d'ajout et de mélange (15), dans lequel l'extrémité côté pompe (14) est en liaison fluidique avec l'au moins une sortie (8a) de la pompe d'ajout et de mélange (6) et l'extrémité côté conduite d'ajout et de mélange (15) avec la conduite d'ajout et de mélange (10) en un emplacement d'ajout et de mélange (16),
    caractérisé en ce que
    la pompe d'ajout et de mélange (6) est une pompe à piston, en particulier une pompe à piston plongeur, avec plusieurs cylindres et présente au moins deux sorties (8a, 8b), dans lequel chaque sortie (8a, 8b) est en liaison fluidique avec au moins un cylindre et chaque cylindre avec exactement une sortie (8a, 8b), et que
    le système d'ajout et de mélange (1) présente en outre une conduite de retour (29) avec une première extrémité côté sortie de pompe (30) et une deuxième extrémité côté entrée de pompe (31), dans lequel au moins une première sortie (8a) présentant une capacité de retour de la pompe d'ajout et de mélange (6) est en liaison fluidique avec soit l'extrémité côté sortie de pompe (30) de la conduite de retour (29) soit avec l'extrémité côté pompe (14) de la conduite de sortie d'additif d'agent extincteur (13) de manière à pouvoir être inversée par l'intermédiaire d'un dispositif d'inversion (28), les autre sorties (8a) ne présentant pas de capacité de retour de la pompe d'ajout et de mélange (6) sont en liaison fluidique avec l'extrémité côté pompe (14) de la conduite de sortie d'additif d'agent extincteur (13) et l'extrémité côté entrée de pompe (31) de la conduite de retour (29) est en liaison fluidique avec la conduite d'entrée d'additif d'agent extincteur (35) ou avec l'entrée (7) de la pompe d'ajout et de mélange (6).
  2. Système d'ajout et de mélange (1) selon la revendication 1, caractérisé en ce qu'une soupape de maintien de pression (23) pour la production d'une contre-pression sur l'additif d'agent extincteur s'écoulant à travers la conduite de retour (29) est disposée dans la conduite de retour (29).
  3. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la au moins une sortie (8b) présentant une capacité de retour est en liaison fluidique avec exactement un cylindre.
  4. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la au moins une sortie (8b) présentant une capacité de retour est en liaison fluidique avec deux, trois ou plus de trois cylindres.
  5. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la pompe d'ajout et de mélange (6) présente deux, trois ou plus de trois sorties (8b) présentant une capacité de retour.
  6. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la pompe d'ajout et de mélange (6) présente exactement trois cylindres.
  7. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que la pompe d'ajout et de mélange (6) présente exactement un, exactement deux, exactement quatre ou plus de quatre cylindres.
  8. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'inversion (28) est un distributeur, en particulier un robinet à tournant sphérique.
  9. Système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif d'inversion (28) peut être inversé au moyen d'un entraînement électrique.
  10. Procédé pour le fonctionnement d'un système d'ajout et de mélange (1) selon au moins l'une quelconque des revendications précédentes avec les étapes :
    - d'amenée d'un flux d'agent extincteur à l'entrée (3) du moteur (2),
    - d'entraînement du moteur (2) par le flux d'agent extincteur,
    - d'entraînement de l'arbre de sortie (5) du moteur (2) par le moteur (2),
    - d'évacuation de l'agent extincteur de la sortie (4) du moteur (2) dans la conduite d'ajout et de mélange (10),
    - d'entraînement de l'arbre d'entraînement (9) de la pompe d'ajout et de mélange (6) par l'arbre de sortie (5) du moteur (2),
    - d'entraînement de la pompe d'ajout et de mélange (6) par l'arbre d'entraînement (9) de celle-ci,
    - d'acheminement de l'additif d'agent extincteur par la conduite d'entrée d'additif d'agent extincteur (35) à l'entrée (7) de la pompe d'ajout et de mélange (6),
    - de transport de l'additif d'agent extincteur par la pompe d'ajout et de mélange (6),
    - d'évacuation de l'additif d'agent extincteur de la au moins une première sortie (8b) présentant une capacité de retour de la pompe d'ajout et de mélange (6) en fonction de la position du dispositif d'inversion (28) dans la conduite de retour (29) ou dans la conduite de sortie d'additif d'agent extincteur (13),
    - éventuellement, d'évacuation de l'additif d'agent extincteur de la conduite de retour (29) dans la conduite d'entrée d'additif d'agent extincteur (35) ou vers l'entrée (7) de la pompe d'ajout et de mélange (6),
    - d'évacuation de l'additif d'agent extincteur des sorties (8a) ne présentant pas de capacité de retour restantes de la pompe d'ajout et de mélange (6) dans la conduite de sortie d'additif d'agent extincteur (13),
    - d'ajout et de mélange de l'additif d'agent extincteur à l'agent extincteur dans la conduite d'ajout et de mélange (10) à l'emplacement d'ajout et de mélange (16),
    - de distribution du mélange (prémélange) agent extincteur/additif d'agent extincteur à l'extrémité côté sortie (12) de la conduite d'ajout et de mélange (10).
EP20789026.0A 2019-10-08 2020-10-02 Système de mélange conçu pour des dispositifs d'extinction d'incendie et procédé pour faire fonctionner un tel système de mélange Active EP4041443B1 (fr)

Applications Claiming Priority (2)

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DE102019215407.7A DE102019215407A1 (de) 2019-10-08 2019-10-08 Zumischsystem für Feuerlöschanlagen
PCT/EP2020/077630 WO2021069319A1 (fr) 2019-10-08 2020-10-02 Système de mélange conçu pour des dispositifs d'extinction d'incendie et procédé pour faire fonctionner un tel système de mélange

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EP (1) EP4041443B1 (fr)
CN (1) CN114502243B (fr)
DE (1) DE102019215407A1 (fr)
ES (1) ES2972537T3 (fr)
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DE3131522A1 (de) * 1981-08-08 1983-04-21 Jürgen Dipl.-Ing. 4800 Bielefeld Kornfeld Einrichtung zum dosierten einbringen von fluessigen zusaetzen zu einer unter druck stroemenden fluessigkeit
CN1005962B (zh) * 1985-07-17 1989-12-06 阿如那·本徒·守古人 用于输送和有效地混合(均匀化)两种或多种液体(气体)并使其液体的比例恒定但可调的混合泵
US4830589A (en) * 1988-09-08 1989-05-16 Hypro Corp. Variable stroke positive displacement pump
DE102004032020B4 (de) * 2004-06-28 2006-11-30 Schmitz Gmbh Feuerwehr- Und Umwelttechnik Verfahren und Anordnung zur Herstellung von Druckluftschaum zur Brandbekämpfung und Dekontamination
US8794255B2 (en) * 2011-08-25 2014-08-05 Dennis Wayne Crabtree Additive proportioning system
CN205626812U (zh) * 2016-04-28 2016-10-12 深圳市共安实业发展有限公司 一种机械泵入式平衡比例混合装置
DE102016217034A1 (de) * 2016-09-07 2018-03-08 Albert Ziegler Gmbh Verfahren zur Herstellung von Löschmittel zur Brandbekämpfung, Mischvorrichtung und Einsatzfahrzeug
CN107349545A (zh) * 2016-10-25 2017-11-17 中国石油化工股份有限公司 机械泵入式压缩气体泡沫灭火装置

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US20220401771A1 (en) 2022-12-22
ES2972537T3 (es) 2024-06-13
DE102019215407A1 (de) 2021-04-08
WO2021069319A1 (fr) 2021-04-15
PL4041443T3 (pl) 2024-04-15
CN114502243A (zh) 2022-05-13
CN114502243B (zh) 2023-05-23

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