EP4323072A1 - Système de mélange pour unités d'extinction d'incendie et son procédé de maintenance - Google Patents

Système de mélange pour unités d'extinction d'incendie et son procédé de maintenance

Info

Publication number
EP4323072A1
EP4323072A1 EP22721708.0A EP22721708A EP4323072A1 EP 4323072 A1 EP4323072 A1 EP 4323072A1 EP 22721708 A EP22721708 A EP 22721708A EP 4323072 A1 EP4323072 A1 EP 4323072A1
Authority
EP
European Patent Office
Prior art keywords
extinguishing agent
line
proportioning
motor
pump
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
EP22721708.0A
Other languages
German (de)
English (en)
Inventor
Fritz Zimmermann
Andreas Hulinsky
Jörn Erlenmaier
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.)
Firedos GmbH
Original Assignee
Firedos 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 Firedos GmbH filed Critical Firedos GmbH
Publication of EP4323072A1 publication Critical patent/EP4323072A1/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
    • 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
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/04—Control of fire-fighting equipment with electrically-controlled release

Definitions

  • the present invention relates to a proportioning system for fire extinguishing systems and a method for its maintenance.
  • a fire extinguishing system within the meaning of the present invention is a system having a pump, a line system and a proportioning system for an extinguishing agent additive, with which an extinguishing agent can be discharged, 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 installed so-called monitor, i. H. a large nozzle, or a permanently installed sprinkler system in a building. However, it can also be a mobile system on a vehicle or roll-off container.
  • Such fire extinguishing systems are usually operated with water as the extinguishing agent.
  • the extinguishing agent is usually first given an extinguishing agent additive, here a
  • Foaming agent added in a specific ratio 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, the so-called admixture rate, is typically between 0.5% and 6%.
  • Another extinguishing agent additive that can be added to the extinguishing agent is a wetting agent, which reduces the surface tension of the extinguishing agent, in particular the extinguishing water.
  • the extinguishing water can thus wet larger areas, in particular on the leaves of trees, and can therefore be used more efficiently. Furthermore, the extinguishing water can penetrate deeper into the forest floor due to the reduced surface tension, for example to extinguish deeper embers.
  • foaming agents that can also be used as wetting agents (then possibly with different admixture rates, in particular with a minimum admixture rate of 0.1%).
  • the invention is partially described below using the example of water as the extinguishing agent and foaming agent as the extinguishing agent additive. However, this is not to be understood as limiting.
  • the invention can also be used when adding any extinguishing agent additives to any extinguishing agent.
  • both the extinguishing agent and the extinguishing agent additive in an extinguishing agent tank or in an extinguishing agent additive tank or via an extinguishing agent supply line or via a Extinguishing agent additive supply line are provided. If the extinguishing agent is provided in an extinguishing agent tank, an extinguishing agent pump is also required, which pumps the extinguishing agent out of the extinguishing agent tank, pressurizes it and feeds it to the admixing system.
  • the components just mentioned are not necessarily part of the proportioning system itself.
  • the mixture to be produced from the extinguishing agent and the extinguishing agent additive i. H. the premix
  • a foaming agent as an extinguishing agent additive is then conducted in the form of a premix flow through a foaming nozzle, in which ambient air is sucked in by the premix flow and mixed with the premix. This activates the foaming 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 foaming agent can also be supplied to the premix in the form of compressed air.
  • CAFS Compressed Air Foam System
  • the admixing system has an admixing pump, through which the extinguishing agent additive can be conveyed and admixed to the extinguishing agent.
  • the proportioning pump is driven by a motor which in turn is driven by a flow of the extinguishing agent itself.
  • the proportioning system thus has a water motor which is driven by the flow of extinguishing water.
  • 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 proportioning pump is then routed through an extinguishing agent additive outlet line from the proportioning pump into a proportioning line, where it is mixed with the flow of extinguishing agent in order to produce the premix.
  • This design of the proportioning system in which the proportioning pump is driven by the flow of extinguishing agent that is present anyway, has the advantage that the proportioning pump does not require any drive energy, in particular electricity, from the outside, making the proportioning system very fail-safe. Furthermore, the delivery rate of the admixing pump is essentially proportional to the speed of the engine, which in turn is essentially proportional to the flow rate of the extinguishing agent stream. In this way, an essentially constant proportioning rate is automatically achieved without the need for further control or regulation devices.
  • the object of the present invention is therefore to reduce the effort involved in maintaining a proportioning system for a fire extinguishing system.
  • the invention is based on an admixture system for fire extinguishing systems for producing an extinguishing agent-extinguishing agent additive mixture (premix) by admixing an extinguishing agent additive, in particular a foaming agent, to an extinguishing agent, in particular water.
  • the admixing system has the following components and lines: a motor that can be driven by an extinguishing agent flow, in particular a water motor, with at least one feed device for feeding the extinguishing agent to the motor, in particular from an extinguishing agent tank or from an extinguishing agent supply line, at least one outlet device for discharging the extinguishing agent from the motor and a motor shaft that can be driven by the motor, an extinguishing agent inlet line with an end on the motor side which is connected to the at least one feed device of the motor, and an end on the extinguishing agent feed side which can be connected in particular to an extinguishing agent tank or to an extinguishing agent supply line, a proportioning pump for delivering the Extinguishing agent additives, preferably a piston pump and more preferably a plunger pump, with a drive shaft which is coupled to the motor shaft of the motor, at least one feed device for providing de s extinguishing agent additive, in particular from an
  • the proportioning system has remote control means for transmitting and executing a command for automatically starting or shutting down the engine and the proportioning pump and/or timer means for automatically starting or shutting down the engine and the proportioning pump, the remote control means and/or the timer means enabling the automatic starting or Allow the engine and proportioner pump to be shut down without the presence of an operator at the proportioner system.
  • the time control means are preferably designed in such a way that they switch the motor and the proportioning pump on or off according to specific, in particular freely definable, time specifications, preferably at specific time intervals and/or when a specific time has elapsed since the last (automatic or manual) commissioning or decommissioning has elapsed.
  • the admixture system also has remote readout means for automatically acquiring and transmitting data relating to the state of the admixture system, the remote readout means allowing this data to be automatically acquired and transmitted without an operator being present at the admixture system.
  • the admixing system also has an extinguishing agent pump for pumping extinguishing agent from an extinguishing agent tank and for feeding it to the engine, the at least one output device of which is connected to the end of the extinguishing agent inlet line on the extinguishing agent feed side, and the remote control means and/or the time control means are therefor set up to start up and shut down the extinguishing agent pump.
  • an extinguishing agent flow is generated in the extinguishing agent inlet line, which drives the motor, which also drives the proportioning pump coupled to the motor and delivers extinguishing agent additive.
  • the functionality of all essential components of the proportioning system can be tested.
  • the extinguishing agent inlet line has an extinguishing agent valve for supplying extinguishing agent from an extinguishing agent supply line to the engine, and the remote control means and/or the timing means are set up to open and close the extinguishing agent valve.
  • the admixing system also has a bypass line for the engine, which is fluidly connected to the extinguishing agent inlet line at an end on the engine inlet side and to the admixing line at an end on the engine outlet side.
  • a line circuit is created within the proportioning system, consisting of the part of the proportioning line between the end of the proportioning line on the engine side and the end of the bypass line on the engine outlet side, the bypass line itself and the part of the extinguishing agent inlet line between the end of the bypass line on the engine inlet side and the end of the extinguishing agent inlet line on the engine side.
  • the motor is also located in this line circuit. It is thus possible for extinguishing agent to circulate through the line circuit and through the motor without extinguishing agent being supplied at the extinguishing agent supply end of the extinguishing agent input line and/or extinguishing agent being discharged at the output end of the admixing line. In this way, the proportioning system can be tested and maintained as a self-contained system with minimal logistical effort.
  • the extinguishing agent lines are always filled with extinguishing agent - even if the admixing system is idle for a long time the line circuit mentioned is always filled with extinguishing agent and therefore does not have to be filled with extinguishing agent for maintenance operations.
  • the proportioning system also has a drive device which is set up to set the motor in rotation and the motor is set up to supply extinguishing agent contained in the circuit described above through this circuit pump.
  • the motor is set in rotation by the drive device and is operated as a pump, the aforementioned circulation of extinguishing agent in the line circuit and thus the self-contained test operation of the proportioning system can be implemented in a simple manner.
  • the proportioning pump is also started up by the motor and delivers the extinguishing agent additive, which means that all the essential components of the proportioning system can be put into operation and tested again.
  • the remote control means and/or the time control means are set up to activate and deactivate the drive device.
  • the drive device is a drive motor, in particular an electric motor, the motor shaft of which is connected to the motor shaft of the motor for the extinguishing agent in a selectively torque-transmitting manner, in particular via a freewheel and/or via an elastic coupling.
  • the drive motor and in particular the electric motor as a drive motor has the advantage that it can be easily connected to the remote control means and/or the Time control means can be used and can be put into operation and put out of operation by them, in particular by electrical switching devices.
  • a clutch In order to achieve the necessary selective decoupling of the drive motor from the motor for the extinguishing agent, a clutch can be used which is closed or opened depending on the operating mode of the proportioning system.
  • a mechanical freewheel is therefore preferably used, which is configured in such a way that during maintenance operation of the admixing system it transmits torque from the rotating drive motor to the motor for the extinguishing agent, but when the drive motor is at a standstill, in particular during “real” operation of the admixing system, a rotation of the motor for the extinguishing agent allows, in which case no torque is transmitted.
  • the mechanical freewheel can be designed in the usual way, for example as a ratchet or roller freewheel.
  • an elastic coupling can be arranged between the drive motor and the motor for the extinguishing agent, in particular in addition to the clutch or the freewheel, in order not to transmit torque fluctuations of the drive motor or the motor for the extinguishing agent to the other motor, or at least in a damped manner .
  • the bypass line has a shut-off valve
  • the Remote control means and/or the timing means are arranged to open and close the shut-off valve.
  • bypass line is only open in maintenance mode and closed in "real" operation.
  • a switching device in particular a ball valve, is arranged in the extinguishing agent additive line, which is also fluidly connected to a return line, the switching device being switchable in such a way that an extinguishing agent additive flow from the pump-side end of the extinguishing agent additive line is selectively routed through the extinguishing agent additive line to the mixing point or into the return line, and wherein the remote control means and/or the time control means are set up to switch over the switching device.
  • the extinguishing agent additive stream can thus be routed during maintenance operation into the return line, which is preferably connected to the extinguishing agent additive tank and returns the extinguishing agent additive to it.
  • the proportioning pump can be operated, in which it delivers extinguishing agent additive and at the same time extinguishing agent circulates in the line circuit, without the extinguishing agent additive getting into the proportioning line.
  • the bypass line has at least one first measuring device, in particular a flow measuring device, preferably a magnetic-inductive flow measuring device, a pressure measuring device and/or a temperature measuring device, and the remote readout means are set up to read out data to be read out and transmitted to the first measuring device.
  • the measured values of the at least one first measuring device such as the flow rate, the pressure and/or the temperature of the extinguishing agent in the bypass line, are therefore available and can be evaluated there in order to check the functionality of the admixing system.
  • the proportioning pump has at least one second measuring device, in particular an oil level sensor and/or an oil quality sensor, and the remote reading means are set up to read and transmit data from the second measuring device.
  • the measured values of the at least one second measuring device such as the oil level and/or the oil quality in the proportioning pump, are also available for evaluation.
  • the return line has at least one third measuring device, preferably a flow measuring device and more preferably a magnetic-inductive flow measuring device, and the remote reading means are set up to read out and transmit data from the third measuring device.
  • the measured values of the at least one third measuring device such as the flow rate of the extinguishing agent additive in the return line, are also available for evaluation.
  • the engine has at least one fourth measuring device, in particular a tachometer, and the remote readout means are set up to read out and transmit data from the fourth measuring device. Accordingly, the measured values of the at least one fourth measuring device, such as the engine speed, are also available for evaluation.
  • the remote control means are removed from the components of the proportioning system for the commissioning and deactivation of which the remote control means are set up, and/or the remote readout means are removed from the components of the proportioning system whose data the remote readout means are set up to record and transmit arranged, in particular on a remote server computer.
  • the proportioning system has time control means, these are preferably arranged on or in the vicinity of the components of the proportioning system for whose activation and deactivation the time control means are set up. Thus, these components can be controlled “autonomously” by the proportioning system by the time control means.
  • the remote control means simultaneously have the function of time control means and are then also located remotely.
  • Remotely arranged is to be understood here as meaning that the remote control or remote readout means are not attached directly to the respective components of the proportioning system. Rather, the remote control or remote readout means can be connected to the admixing system via communication lines, preferably via telecommunications networks and more preferably via the Internet. They can be located in the same local building as the proportioning system itself, in a different building on the premises of the proportioning system operator, at the proportioning system manufacturer, or virtually anywhere else in the world. This allows the desired remote maintenance while saving travel time and travel costs for the maintenance personnel.
  • the data transmitted by the remote readout means can be stored remotely by the components of the admixing system whose data the remote readout means are set up to record and transmit, in particular in a memory of a remote server computer or in a cloud memory .
  • cloud storage is intended here, in accordance with the term “cloud computing” commonly used in computer science, to designate a data storage device that can be distributed across a large number of physical storage locations and whose geographic position or geographic positions may be available to the user of the cloud -Memory is or are not known at all.
  • the user can access the cloud storage over the Internet and use it in a similar manner as if it were installed on a local machine.
  • the remote maintenance and remote reading means themselves, namely that they can be stored practically anywhere in the world in order to be evaluated immediately or later, in particular by comparing them with specified target values, with earlier ones Data from the same proportioning system or with data from other proportioning systems.
  • a method according to the invention for servicing a proportioning system according to the invention has the following steps:
  • the engine and the proportioning pump are started up by the remote control means and/or time control means,
  • the following step is carried out before the engine and the admixing pump are started up:
  • the switching device in the extinguishing agent additive line is switched over by the remote control means and/or timing means in such a way that an extinguishing agent additive flow is conducted from the pump-side end of the extinguishing agent additive line into the return line.
  • the switching device in the extinguishing agent additive line is switched over by the remote control means and/or timing means in such a way that an extinguishing agent additive stream is routed from the pump-side end of the extinguishing agent additive line through the extinguishing agent additive line to the mixing point.
  • a valve in the return line can be opened or closed in order to allow or prevent the outflow of extinguishing agent additive through the return line.
  • FIG. 1 shows a flow chart of a proportioning system according to the invention and a schematic representation of the remote maintenance and remote reading means and the communication lines for their connection.
  • the admixing system 1 is supplied with fire-fighting water, which is pumped out of a fire-fighting water tank by means of a fire-fighting water pump (neither of which is shown) and pressurized in the process.
  • the extinguishing water then flows through the extinguishing agent inlet line 17 from its end 19 on the extinguishing agent supply side to the feed device 3 of the water motor 2 and into it in order to drive it.
  • the water motor 2 preferably works according to the displacement principle, more preferably according to the reciprocating piston principle or according to the rotation principle.
  • the extinguishing water enters the admixing line 10 at its motor-side end 11.
  • the motor shaft 5 of the water motor 2 is connected to the drive shaft 9 of a proportioning pump 6, preferably via a clutch (not shown). With the motor shaft 5 of the water motor 2, the drive shaft 9 of the proportioning pump 6 is thus also set in rotation, as a result of which the proportioning pump 6 is driven.
  • the admixing pump 6 is preferably a plunger pump.
  • the admixing pump 6 delivers an extinguishing agent additive, in particular a foaming agent, which is provided in an extinguishing agent additive tank (not shown) and fed to the feed device 7 of the admixing pump 6 . There it is sucked in by the proportioning pump 6 , pressurized by the latter and conveyed to the output device 8 of the proportioning pump 6 .
  • the extinguishing agent additive reaches the pump-side end 14 of the extinguishing agent additive line 13.
  • the extinguishing agent additive first reaches a three-way ball valve 30 and, if this is in the "admixing" position, to the end 15 of the extinguishing agent additive line 13 on the admixing line side, where it is connected to the admixing line 10. There is also the mixing point 16 at which the extinguishing agent additive is mixed with the extinguishing water.
  • the volume ratio between the admixed extinguishing agent additive and the extinguishing water i. H. the proportioning rate, essentially constant, for example 3%.
  • the shut-off valve 29 in the bypass line 22 which is described in more detail below, is closed, so that no extinguishing water can flow from the proportioning line 10 into the bypass line 22 at the end 24 of the bypass line 22 on the engine outlet side.
  • the proportioning system 1 can also be operated in a maintenance operation, which will now be described:
  • the admixing system 1 has remote control means 20, through which a command for the automatic activation or deactivation of the water motor 2 and the admixing pump 6 can be transmitted, as well as remote readout means 21, through which data relating to the status of the admixing system 1 can be automatically recorded and transmitted , on.
  • time control means for the automatic activation or deactivation of the water motor 2 and the proportioning pump 6 can also be provided. However, these are not shown in the exemplary embodiment.
  • the remote control means 20 and the remote reading means 21 can be arranged in a local building 39, connected by a signal/control line 40, or, connected by an additional Internet connection 41, at any other desired location.
  • the remote control means 20 and/or the remote readout means 21 can be arranged in particular in a local programmable logic controller (PLC) 42 or on a server computer 37 on the Internet.
  • PLC local programmable logic controller
  • the data transmitted to the remote readout means 21 can in particular also be stored in a cloud memory 38 . The presence of an operator in the immediate vicinity of the admixing system 1 is therefore no longer required for maintenance, as a result of which pure remote maintenance operation is made possible.
  • the proportioning system 1 In the maintenance mode, the proportioning system 1 is not supplied with extinguishing water from an extinguishing water tank or from an extinguishing water supply line, i. H. the extinguishing agent supply end 19 of the extinguishing agent inlet line 17 does not have the extinguishing water flowing through it. Accordingly, no extinguishing water or premix is delivered to the consumer or consumers by the admixing system 1, d. H. the discharge-side end 12 of the proportioning line 10 is not flowed through by the extinguishing water or the premix. In this way, the maintenance operation runs practically “autonomously", i.e. without exchanging extinguishing water or premix between the proportioning system 1 and the other components of the fire extinguishing system.
  • the extinguishing water circulates in a line circuit, which essentially consists of a bypass line 22, more precisely the part of the proportioning line 10 between the engine-side end 11 of the proportioning line 10 and the engine-outlet-side end 24 of the bypass line 22, the bypass line 22 itself and the part of the extinguishing agent inlet line 17 between the engine-side end 23 of the bypass line 22 and the engine-side end 18 of the extinguishing agent inlet line 17.
  • the water motor 2 closes this line circuit between the engine-side end 18 of the extinguishing agent inlet line 17 and the engine-side end 11 of the proportioning line 10.
  • a flow measuring device 32 in particular a magnetic-inductive flow measuring device (MID), which is described in more detail below, and a shut-off valve 29 are arranged in the bypass line 22 and thus in the line circuit.
  • the shut-off valve 29 In the maintenance mode of the proportioning system 1, the shut-off valve 29 is open so that the extinguishing water can flow through the line circuit.
  • the shut-off valve 29 is preferably also opened and closed by the remote control means 20.
  • the water motor 2 acts as a pump and pumps extinguishing water through the line circuit mentioned. Since the proportioning system 1 in the exemplary embodiment is a so-called wet system, the lines of which are always filled with extinguishing water or extinguishing agent additive or premix, the line circuit does not have to be specially filled with extinguishing water for maintenance operations.
  • the invention can also be implemented in a so-called dry system, the lines of which are not always filled with extinguishing water or extinguishing agent additive or premix.
  • the line circuit does not necessarily have to be filled with extinguishing water.
  • the speed and the associated delivery volume of the water motor are used as a measure of the extinguishing agent flow.
  • the water motor 2 Since the water motor 2 is intended to function as a pump during maintenance operation, it must be rotated in this case by an additional drive device.
  • the water motor 2 is connected to the drive device 25, in the exemplary embodiment an electric motor, which optionally has a gear, in particular a reduction gear.
  • the motor shaft 26 of the drive device 25 is here connected to the motor shaft 5 of the water motor 2 .
  • the motor shaft 5 is preferably additionally led out of the housing of the water motor 2 on a side opposite the proportioning pump 6 .
  • a freewheel 27 is additionally arranged between the drive device 25 and the water motor 2, which transmits the torque of the drive device 25 to the water motor 2 during maintenance operation of the proportioning system 1 and thus causes it to rotate.
  • the freewheel 27 slips, so that the water motor 2 - in this case driven by the flow of extinguishing water in the extinguishing agent inlet line 17 - can rotate unhindered.
  • an elastic coupling 28 is arranged between the drive device 25 and the water motor 2, so that rotational irregularities in one of the two motors 25, 2 are not transmitted to the other.
  • the drive device 25 is switched on and off by the remote control means 20, for which purpose the switching functions of a PLC 42 can be used, for example.
  • the water motor 2 and thus the proportioning pump 6 are also put into operation or taken out of operation.
  • the circulation of the extinguishing water in the line circuit and thus the proper functioning of the water motor 2 is monitored by several measuring devices, namely by a pressure measuring device 33, a flow measuring device 32, which is a magnetic-inductive flow meter (MID) in the exemplary embodiment, and by a temperature measuring device 34, which can also be integrated in the flow measuring device 32.
  • the measured values of these measuring devices are recorded and transmitted by the remote reading means 21 and are therefore available for evaluation, possibly at a remote location.
  • the speed of the water motor 2 can also be measured by a corresponding measuring device, in particular a tachometer (not shown), and can be recorded and transmitted by the remote readout means 21 .
  • the admixing pump 6 is also put into operation by being coupled to the water motor 2 and delivers extinguishing agent additive from an extinguishing agent additive container (not shown). Since the line circuit described should not have any exchange with the environment during the maintenance operation, no extinguishing agent additive may get into the proportioning line 10 .
  • the three-way ball valve 30 is moved from the "admixing" position to the "return” position by the remote control means 20 during maintenance operation, whereby the extinguishing agent additive is fed into the return line 31 instead of to the admixing point 16 and from there back to the Extinguishing agent additive container is promoted.
  • the three-way ball valve 30 is switched over between the “mixing” position and the “return” position by the remote control means 20.
  • the three-way ball valve 30 preferably has an electric drive and more preferably a device for monitoring the position or which is actuated or monitored by the remote control means 20, in particular in the form of a PLC.
  • the admixing system 1 can also have a two-way ball valve (not shown), which is arranged in a flushing line (also not shown).
  • the flushing line branches off from the extinguishing agent inlet line 17 and leads to the feed device 7 of the proportioning pump 6.
  • the two-way ball valve can be switched between a closed and an open position. In “real" operation of proportioning system 1, the two-way ball valve is closed.
  • the two-way ball valve is open and releases the flushing line so that the extinguishing water can flow through it. In this way, the proportioning pump 6 can be flushed with extinguishing water.
  • the two-way ball valve can also have an electric drive and/or a device for monitoring the position, which is actuated or monitored by the remote control means 20 .
  • a further flow measuring device 36 again a magnetic-inductive flow meter (MID) in the exemplary embodiment, which can be used to monitor the extinguishing agent additive flow in the return line 31 and thus the proper functioning of the proportioning pump 6.
  • the measured values of the flow measuring device 36 are also recorded and transmitted by the remote readout means 21 and are therefore available for evaluation, possibly at a remote location.
  • the admixing rate can also be calculated and compared with a given target admixing rate.
  • Proper functioning of the proportioning pump 6 is also monitored by an oil level sensor and/or oil quality sensor 35, the measured values of which are also recorded and transmitted by the remote readout means 21 and, if necessary at a remote location, are available for evaluation.
  • Oil level sensor and/or oil quality sensor are oil level sensor and/or oil quality sensor

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

Abstract

La présente invention concerne un système de mélange (1) pour des unités d'extinction d'incendie, pour produire un mélange d'un agent d'extinction d'incendie et d'un additif d'extinction d'incendie (prémélange) en mélangeant un additif d'extinction d'incendie, en particulier un agent moussant, dans un extincteur d'incendie, en particulier de l'eau, ledit système de mélange comprenant un moteur (2) qui peut être entraîné par un écoulement d'agent d'extinction d'incendie, et une pompe de mélange (6) utilisée pour distribuer l'additif d'extinction d'incendie, qui est couplée au moteur (2) et entraînée par celui-ci. Le système de mélange (1) comprend des moyens de commande à distance (20) pour transmettre et exécuter une commande pour le démarrage ou l'arrêt automatique du moteur (2) et de la pompe de mélange (6), ainsi que des moyens de lecture à distance (21) pour détecter et transmettre automatiquement des données relatives à l'état du système de mélange (1). La présence d'un opérateur n'est donc pas nécessaire avec le système de mélange (1). Ces fonctions de maintenance à distance permettent l'opérabilité du système de mélange (1) à vérifier sans qu'un opérateur n'ait à entrer physiquement dans l'unité d'extinction d'incendie avec le système de mélange (1), ce qui permet de réduire significativement la complexité et les coûts de maintenance associés.
EP22721708.0A 2021-04-13 2022-04-08 Système de mélange pour unités d'extinction d'incendie et son procédé de maintenance Pending EP4323072A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021203613.9A DE102021203613A1 (de) 2021-04-13 2021-04-13 Zumischsystem für Feuerlöschanlagen und Verfahren zu seiner Wartung
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CN115645802A (zh) * 2022-10-28 2023-01-31 西安理工大学 一种集成式压缩空气泡沫灭火系统及其控制方法
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US6009953A (en) * 1997-02-25 2000-01-04 Hale Products, Inc. Foam pump system for firefighting apparatus
US9625915B2 (en) * 2009-09-15 2017-04-18 Rom Acquisition Corporation Complete integrated fireground control system and method
US20180272164A1 (en) * 2017-03-23 2018-09-27 Stephen Knight Portable remote fire suppression systems
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