EP4477277A2 - Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction - Google Patents

Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction Download PDF

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Publication number
EP4477277A2
EP4477277A2 EP24209806.9A EP24209806A EP4477277A2 EP 4477277 A2 EP4477277 A2 EP 4477277A2 EP 24209806 A EP24209806 A EP 24209806A EP 4477277 A2 EP4477277 A2 EP 4477277A2
Authority
EP
European Patent Office
Prior art keywords
pump
signal
designed
stop signal
provision
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
EP24209806.9A
Other languages
German (de)
English (en)
Other versions
EP4477277A3 (fr
Inventor
Joachim BÖKE
Stephan BLUDAU
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.)
Mecon GmbH
Original Assignee
Mecon 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
Priority claimed from DE102024101000.2A external-priority patent/DE102024101000A1/de
Application filed by Mecon GmbH filed Critical Mecon GmbH
Publication of EP4477277A2 publication Critical patent/EP4477277A2/fr
Publication of EP4477277A3 publication Critical patent/EP4477277A3/fr
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C35/00—Permanently-installed equipment
    • A62C35/58—Pipe-line systems
    • A62C35/68—Details, e.g. of pipes or valve systems
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C37/00—Control of fire-fighting equipment
    • A62C37/50—Testing or indicating devices for determining the state of readiness of the equipment

Definitions

  • the present invention relates to a water extinguishing system, comprising an extinguishing fluid supply configured to provide an extinguishing fluid, at least one pump configured to convey the extinguishing fluid from the extinguishing fluid supply into a feed line to the pipe system of the water extinguishing system, a control unit configured to controllably operate the at least one pump, which control unit is designed to start and operate the pump for a pump test run when a start signal is provided and to end the pump test run and stop the pump when a stop signal is provided.
  • the invention relates to a method for operating a water extinguishing system with an extinguishing fluid supply set up to provide an extinguishing fluid, at least one pump set up to convey the extinguishing fluid from the extinguishing fluid supply into a feed line to the pipe system of the water extinguishing system and a control unit set up for the controllable operation of the at least one pump, which is designed to start and operate the pump for a pump test run when a start signal is provided and to terminate the pump test run and stop the pump when a stop signal is provided, comprising the following steps: starting and operating the pump for the purpose of the pump test run by means of the control unit when a start signal is provided, ending the pump test run and stopping the operation of the pump when a stop signal is provided.
  • Such water extinguishing systems or sprinkler systems are used in fire fighting.
  • a pump is preferably started, which delivers an extinguishing fluid to the nozzles or sprinklers.
  • the extinguishing fluid used is water or water with extinguishing agent additives, such as foam or wetting agents.
  • water extinguishing systems are therefore understood to mean all extinguishing systems that are operated using a fluid extinguishing agent.
  • such water extinguishing systems regularly include pressure switch devices that for example, they are designed as pressure switches. Such pressure switches generate a switching signal when the pressure drops below a predefined or predetermined threshold value. This switching signal can be used, for example, to initiate further processes, such as starting a pump or several pumps. The switching signal can also be fed to a central control unit for further processing as a signal for a pressure drop.
  • a nozzle or sprinkler opens in the event of a fire so that an extinguishing fluid, preferably water or water with fire-retardant additives, can be applied to fight the fire.
  • an alarm valve opens to make the extinguishing fluid available to the nozzles or sprinklers.
  • the alarm valve is controlled, for example, via a fire alarm control panel. Opening a sprinkler or nozzle causes a pressure drop in the pipe system carrying the extinguishing fluid.
  • Such pressure switching devices, especially for sprinkler pumps are subject to national standards and guidelines, for example VdS CEA 4001 2000-04 : 2021-01 (07).
  • the guideline stipulates that at least one pressure switch is provided to start each pump. It is also possible for two such pressure switches to be connected electrically in series.
  • the standards EN 12845:2020-11 and EN 5 12845:2015+A1:2019 are also relevant here. Regular checks and maintenance are required to maintain the operational readiness of such extinguishing systems.
  • the VdS 2212 guideline stipulates weekly checks by the system operator on the water extinguishing system.
  • the tests also include a check of the pump start. For example, a monthly test run is required for electrically operated pumps according to the guidelines of FM Global or the NFPA, and a weekly pump test run is required for diesel pumps. According to VdS CEA 4001 and EN 12845, a weekly pump test run is also required for electric pumps.
  • Such pump test runs serve to check the functionality of the entire chain of components and their interaction, from the generation of a pressure drop, the correct functionality of the pressure switching device to the start of the pump or pumps.
  • a pressure switch device for this purpose in such water extinguishing systems, which has two pressure switches connected in series as pressure detection devices. Alternatively, two pressure switches are connected in parallel and are set up in such a way that they work as electrical contacts. Both pressure switches must be tested for functionality in such a pump test run. The provision of the switching signal at the predetermined pressure threshold value for both pressure switches and the starting of the pump by switching signal initiation must be tested.
  • Such a pressure switching device known from the prior art can be considered as a component of a pump test device, which comprises the central control unit mentioned, in particular a pump control cabinet, a sprinkler pump control cabinet or a combination of fire alarm control panel and pump control cabinet.
  • the pump test device is designed to start the pump when a predefined pressure drop is generated.
  • the pressure switches of the pressure switching device are provided with a supply line to a main line, which leads the extinguishing fluid from the pump outlet to the pipe system with the nozzles or sprinklers.
  • the supply line establishes a fluid-conducting connection from the main line to the two pressure switches connected in series.
  • this is divided into a first supply line to a first pressure switch and a second supply line to a second pressure switch.
  • the supply line has, for example, shut-off valves, preferably in the form of a first shut-off valve and a second shut-off valve, as well as valves for draining extinguishing fluid to generate the necessary pressure drop to start the sprinkler pump, and pressure gauges.
  • the weekly test run of the pump is carried out manually by a trained person. According to the state of the art published in standards and guidelines, it is therefore always necessary for trained personnel to be present on site during such a test run.
  • Such a pump test run is carried out, for example, in water extinguishing systems equipped with two of the pressure switches as follows: A first shut-off valve in the first supply line is operated manually so that the the fluid connection from the main line to the first pressure switch is interrupted so that when a pressure drop is generated for the test run, the first pressure switch does not detect this pressure drop and therefore cannot generate a switching signal. In this way, only the function of the second pressure switch and the subsequent components is tested. If a pressure switch or pressure sensor is present, the start can be carried out using a 2/3-way solenoid valve activated by the "pump controller".
  • the valve in the second supply line is then opened manually to create a pressure drop.
  • the second pressure switch then creates a switching signal at a certain switching pressure reading, which is read by the maintenance staff on the pressure gauge, when the pressure drop is created.
  • This signal is sent via a signal-conducting connection to the central control unit to start the pump.
  • the pump is started and in practice the test run is ended when the pump's normal operating parameters are reached.
  • the test run then takes place by starting the pump via the first pressure switch.
  • a second shut-off valve in the second supply line is manually operated so that the fluid connection from the main line to the second pressure switch is interrupted so that if a pressure drop is generated for the test run, the second pressure switch does not detect this pressure drop and cannot generate a switching signal.
  • the valve in the first supply line is then manually opened to generate a pressure drop.
  • the first pressure switch When the pressure drop is generated, at a certain switching pressure measurement value, which is read by the maintenance staff on the pressure gauge, the first pressure switch generates a switching signal. This signal is sent via a signal connection to the central control unit to start the pump.
  • the switching pressure measured values of the two pressure switches recorded in this way are then compared by the maintenance personnel with the specified threshold values of the pressure switches in order to determine whether the switching pressure measured values recorded correspond to the predefined threshold values within the permitted or specified tolerance.
  • the disadvantage of the known water extinguishing systems and the known method mentioned is that the pump test run must be carried out manually. In particular, it is necessary for a suitably trained person to be present on site during such a pump test run to monitor the parameters. Carrying out such a pump test run is therefore very labor-intensive. If a fire occurs during a pump test run, there is also a risk, particularly with automation, that the pump will be stopped at the end of the pump test run when the stop signal is provided. When carrying out such a pump test run, there is therefore the problem that the pump is stopped despite the fire having occurred and the supply of extinguishing agent is interrupted in an impermissible and dangerous way.
  • control unit has a signal suppression unit which is set up to temporarily suppress the provision of the stop signal in the event of a fire, and the signal suppression unit is designed without a computer program sequence. In this way, it is ensured that the pump is always prevented from being switched off in the event of a fire.
  • control unit according to the invention is designed as a priority circuit which suppresses the provision of the stop signal in the event of a fire. This ensures that a reliable supply of extinguishing agent is always guaranteed if a fire occurs during a pump test run. This offers the possibility for the first time of carrying out a pump test run as automatically as possible.
  • the control unit according to the invention is preferably set up in such a way that the suppression of the provision of the stop signal is suppressed at least during the pump test run.
  • the signal suppression is preferably implemented using analog or digital circuits. Suppression is also preferably implemented using hard-wired relay or contactor combinations.
  • control unit has a signal suppression unit that is set up to suppress the provision of the stop signal in the event of a fire, at least temporarily. In this way, it is ensured that the pump is always prevented from switching off in the event of a fire.
  • control unit according to the invention is designed as a priority circuit that suppresses the provision of the stop signal in the event of a fire. This ensures that a reliable supply of extinguishing agent is always guaranteed if a fire occurs during a pump test run. This offers the possibility for the first time of carrying out a pump test run as automatically as possible.
  • control unit according to the invention is set up in such a way that the suppression of the provision of the stop signal is suppressed at least during the pump test run. More preferably, it is set up to suppress the provision of the stop signal for a predetermined blocking time that goes beyond the actual pump test run duration.
  • control unit is designed as a separate control unit which is installed in the water extinguishing system according to the invention in addition to a control cabinet which is already present for controlling the water extinguishing system. It is also possible for the control unit according to the invention to be integrated in the said control cabinet.
  • An expedient embodiment of the invention is characterized in that the water extinguishing system further comprises a fire alarm control panel which is designed to provide a fire alarm signal in the event of a fire, wherein the signal suppression unit is designed to suppress the provision of the stop signal when a fire alarm signal is provided.
  • the fire alarm control panel is advantageously designed to determine whether a fire event has occurred via a plurality of fire detectors. If the fire alarm control panel detects that a fire has occurred, it provides the fire alarm signal.
  • the fire alarm control panel is also advantageously designed to suppress the provision of the stop signal during the pump test run in order to reliably prevent the pump from being switched off in the event of a fire.
  • a further expedient embodiment of the invention is characterized in that a flow monitor is arranged between the supply line and the pipe system, which is designed to cause the signal suppression unit to suppress the provision of the stop signal when the flow monitor detects a volume flow of the extinguishing fluid.
  • the flow monitor thus reliably detects whether or not one or more sprinklers have already been opened by a fire event. If all sprinklers or the alarm valve are closed, the pump builds up a static pre-pressure in the supply line during a test run. The volume flow through the flow monitor is zero in this case.
  • the previously described flow monitor according to the invention is thus designed as a fire detection system, by means of which the occurrence of a fire event is detected even during a pump test run and the stop signal is then suppressed by means of the signal suppression unit. In this way, it is possible to reliably detect a fire event during an ongoing pump test run and to stop the pump and thus always ensure a reliable, continuous supply of extinguishing fluid.
  • control unit comprises a pump start device, wherein the pump start device is designed to provide the start signal to start the pump when the volume flow is detected by means of the flow monitor.
  • the extinguishing fluid in the supply line is subjected to a static pre-pressure for this purpose.
  • the program start device provides the start signal mentioned to start the pump.
  • the flow monitor fulfils a dual function. On the one hand, it is designed to detect the opening of one or more sprinklers in the event of a fire during a pump test run and to temporarily block the pump from being switched off. On the other hand, it is designed to reliably detect the opening of one or more of the sprinklers or the alarm valve in systems with open nozzles caused by a fire when the pump is switched off and there is static pre-pressure in the supply line.
  • a preferred development of the invention is characterized in that the flow monitor is designed to suppress the provision of the stop signal if the detected volume flow exceeds a predetermined minimum volume flow. If the detected volume flow exceeds the size of the predetermined minimum volume flow, this is a clear indicator of a fire event. Switching off the pump at the end of the pump test run is thus reliably avoided in the event of a fire and the supply of extinguishing fluid is ensured.
  • the flow monitor is designed as a flow switch.
  • the flow monitor is thus advantageously designed to be particularly robust against interference and false triggering.
  • a further expedient embodiment of the invention is characterized in that the signal suppression unit comprises a first controllable electromagnetic switch with a controllable first working contact, wherein the stop signal is electrically guided via the first working contact in such a way that the provision of the stop signal is suppressed when the fire alarm signal is provided by opening the first working contact.
  • the suppression of the stop signal is carried out on the hardware side.
  • the suppression of the stop signal is thus predetermined in terms of circuitry and free of further control components, in particular those that are computer program-based.
  • the suppression of the stop signal is also set up redundantly to the other control components.
  • a further expedient embodiment of the invention is characterized in that the first controllable electromagnetic switch is set up in such a way that the provision of the stop signal is automatically suppressed in the event of a power failure, in that the first working contact opens automatically in the absence of a power supply.
  • this always ensures that the provision of the stop signal is reliably suppressed in every case, even in the event of a power failure. A failure or switching off of the power supply therefore does not affect the suppression of the provision of the stop signal according to the invention.
  • a preferred development of the invention is characterized in that the signal suppression unit comprises a second controllable electromagnetic switch with a controllable second working contact, wherein the stop signal is electrically guided via the second working contact such that the provision of the stop signal is suppressed by the flow monitor when the volume flow of the extinguishing fluid is detected by the second working contact opening.
  • the signal suppression unit comprises a second controllable electromagnetic switch with a controllable second working contact, wherein the stop signal is electrically guided via the second working contact such that the provision of the stop signal is suppressed by the flow monitor when the volume flow of the extinguishing fluid is detected by the second working contact opening.
  • the first working contact and the second working contact are connected in series.
  • the first working contact and the second working contact thus form an interruption chain which is designed to suppress the provision of the stop signal as soon as one of the two working contacts is opened.
  • the working contacts are designed as a safety signaling chain via which the stop signal is routed. Opening one or both working contacts always leads to a suppression of the provision of the stop signal and ensures that the pump continues to run in the cases mentioned.
  • the water extinguishing system comprises a control center which is set up to initiate a pump test run on manual input and/or automatically and is designed to initiate the pump test run and to start the pump and to provide the stop signal to end the pump test run and to stop the pump.
  • the control center is preferably designed as a logic unit, for example as a programmable logic controller or the like, and forms a subunit of the control unit.
  • a preferred development of the invention is characterized in that the control center and/or the control unit is designed to suppress the provision of the stop signal in the event of a fire.
  • the suppression of the provision of the stop signal in the control center and/or the control unit is carried out by software.
  • the suppression of the provision of the stop signal is designed redundantly. In particular, this ensures that in the event of a failure or malfunction of the control center and/or the control unit in the event of a fire, the provision of the stop signal is always prevented by means of the signal suppression unit in order to always ensure the supply of extinguishing fluid.
  • the signal suppression unit is designed to be free of computer program execution. In this way, a high level of reliability and constant functionality of the signal suppression unit is ensured.
  • the signal suppression is preferably implemented using analog or digital circuits. Suppression is also preferably implemented using hard-wired relay or contactor combinations.
  • the object is achieved by a corresponding method with the features mentioned at the outset, in any case by temporarily suppressing the provision of the stop signal in the event of a fire by means of a signal suppression unit of the control unit, wherein the signal suppression unit is designed to be free of computer program execution.
  • the object is further achieved by a corresponding method with the features mentioned at the outset, in any case by temporarily suppressing the provision of the stop signal in the event of a fire by means of a signal suppression unit of the control unit.
  • a preferred development of the invention is characterized by providing a fire alarm signal by means of a fire alarm control panel in the event of a fire and suppressing the provision of the stop signal by means of the signal suppression unit when the fire alarm signal is provided.
  • a further expedient embodiment of the invention is characterized by detecting a volume flow of the extinguishing fluid by means of a flow monitor arranged between the supply line and the pipe system and causing the signal suppression unit to suppress the provision of the stop signal if a volume flow of the extinguishing fluid is detected by the flow monitor.
  • a further expedient embodiment of the invention is characterized by providing the start signal for starting the pump if the volume flow is detected by means of the flow monitor.
  • a preferred development of the invention is characterized by Initiating a pump test run by means of a control center by manual input and/or automatically, comprising the steps of: initiating the pump test run and starting the pump by providing the start signal and optionally terminating the pump test run to stop the pump by providing the stop signal.
  • a further expedient embodiment of the invention is characterized by suppressing the provision of the stop signal in the event of fire by means of the control center and/or the control unit.
  • the water extinguishing system according to the invention and the method comprise an extinguishing fluid supply 10 which is used to provide a - not shown in the drawing shown - extinguishing fluid is designed and arranged.
  • the extinguishing fluid supply 10 is designed, for example, as an extinguishing fluid tank or extinguishing agent supply line.
  • the water extinguishing system comprises at least one pump 14 designed to convey the extinguishing fluid from the extinguishing fluid supply 10 into a feed line 12 to a pipe system 13 of the water extinguishing system.
  • the pump 14 comprises a motor 15, which is preferably designed as a diesel motor or electric motor.
  • a motor control unit 16 is connected upstream of the motor 15, which is designed to operate the motor 15 of the pump 14 in a controllable manner.
  • a control unit 17 is set up to start and operate the pump 14 for a pump test run when a start signal is provided and to end the pump test run and stop the pump 14 when a stop signal is provided.
  • the control unit 17 provides the start and stop signal, which is processed by the motor control unit 16 in order to operate the motor 15 of the pump 14 in a controllable manner as described above.
  • the engine control unit 16 is set up to start or allow the engine 15 to start and operate it. If the engine 15 is, for example, an internal combustion engine such as a diesel engine, the engine control unit 16 includes the required electric starter and all control components required to operate the engine 15. If an electric motor or a three-phase synchronous or asynchronous motor is used, the engine control unit 16 includes, for example, an appropriately programmed and configured frequency converter in order to carry out the functions mentioned in a control-variable manner.
  • the control unit 17 comprises a signal suppression unit 18 which is designed to temporarily suppress the provision of the stop signal in the event of a fire.
  • the signal suppression unit 18 is designed to prevent the stop signal from being sent to the control unit 17 during a fire in order to prevent the pump 15 from stopping in any case.
  • Temporary suppression is to be understood as meaning that the stop signal is suppressed for a predetermined minimum or blocking time or even permanently.
  • the stop and start signals are preferably transmitted by means of a signal-conducting connection 19 from the control unit 17 to the engine control unit 16.
  • the signal-conducting connection 19 is preferably set up as a wired or wireless interface, for example as a signal bus system.
  • pressure gauges 19, 20 are arranged on the suction and pressure sides of the pump 14, by means of which the pressure of the extinguishing fluid is measured and displayed on both the suction side and the pressure side of the pump 14.
  • the pressure gauges 19, 20 are alternatively designed as pressure sensors.
  • the suction side of the pump 14 is further preferably designed to be shut off from the extinguishing fluid supply 10 by means of a first shut-off valve 21.
  • a second shut-off valve 22 is arranged on the pressure side of the pump 14, by means of which the pressure side of the pump 14 with the supply line 12 can be shut off from the pipe system 13.
  • the water extinguishing system further comprises a fire alarm control panel 23.
  • the fire alarm control panel 23 is set up to provide a fire alarm signal in the event of a fire.
  • the fire alarm control panel 23 is set up in particular to determine whether a fire event has occurred via a plurality of fire detectors (not shown in the drawing). If the fire alarm control panel 23 detects such a fire event, it provides the fire alarm signal as described above.
  • the signal suppression unit 18 is set up to suppress the provision of the stop signal when the fire alarm signal is provided in order to reliably prevent the pump 14 or the motor 15 from being switched off in the event of a fire.
  • the signal suppression device 18 is preferably designed as an integral part of the control unit 17.
  • the control unit 17 thus provides all functionalities for controlling the motor 15 or the pump 14, including the previously described signal suppression.
  • the signal suppression device 18 - as in Fig. 2 shown schematically - designed as a separate unit.
  • a flow monitor 24 is arranged between the supply line 12 and the pipe system 13. This is designed to cause the signal suppression unit 18 to suppress the provision of the stop signal when the flow monitor 24 detects a volume flow of the extinguishing fluid.
  • the flow monitor 24 is therefore designed to detect whether one or more of the sprinklers have already been opened due to a fire event or not. If all sprinklers in the closed state, the pump 14 builds up a static pre-pressure in the supply line 12 during a test run in the extinguishing fluid supply 10. The volume flow through the flow monitor 24 is zero in this case.
  • extinguishing agent flows from the supply line 12 through the flow monitor 24 into the pipe system 13, so that the latter detects a volume flow that deviates from zero. In this way, it is possible to reliably detect a fire event during a pump test run and prevent the pump 14 from stopping, thus ensuring a reliable, continuous supply of extinguishing agent fluid at all times.
  • a further expedient embodiment of the invention is characterized in that the control unit 17 comprises a pump start device (not shown in the drawing).
  • the pump start device is designed to provide the start signal to start the pump, for example when the volume flow is detected by means of the flow monitor 24.
  • a pressure sensor 25 or pressure switch 25 is preferably also connected to the pump start device. This is designed to provide the start signal when a pressure drop is detected by the pressure sensor 25.
  • a backflow preventer 26 is preferably arranged between the supply line 12 and the pipe system 13.
  • a preferred development of the invention is characterized in that the flow monitor 24 is designed to suppress the provision of the stop signal if the detected volume flow exceeds a predetermined minimum volume flow. If the detected volume flow exceeds the size of the predetermined minimum volume flow, this is a clear indicator of a fire event that has occurred. Switching off the pump 14 or the motor 15 at the end of the pump test run is thus reliably avoided in the event of a fire being detected and the supply of extinguishing fluid is ensured.
  • the flow monitor 24 is designed as a flow switch. The flow monitor is thus advantageously particularly robust against malfunctions and false triggering.
  • FIG. 4 shows another variant of the already in the Figures 1 and 2 shown versions.
  • Additional alarm valves 27, 28 are shown.
  • the nozzles/sprinklers 29 shown are hydraulically connected to the alarm valve 27.
  • the alarm valve 27 is controlled via a control system coupled to the fire alarm control panel 23.
  • Figure 5 shows a circuit diagram of the signal suppression unit 18, which is shown schematically as a simplified signal or circuit diagram.
  • the signal suppression unit 18 is preferably designed as a first controllable electromagnetic switch 30 with a controllable first working contact 31.
  • the stop signal is, for example, electrically routed via this first working contact 31 in such a way that the provision of the stop signal is suppressed when the fire alarm signal is provided by the first working contact 31 opening.
  • Fig. 5 the flow monitor 24 is not shown activated, i.e. closed in the resting state.
  • the stop signal that can be provided by a control center 32 is routed via the flow monitor 24, for example, to the first controllable electromagnetic switch 30.
  • the holding coil 33 is supplied with power and the switch 30 routes a stop signal, if provided, to the motor control unit 16 via the first working contact 31.
  • the control center 32 is designed in particular to initiate a pump test run upon manual input and/or automatically. Furthermore, the control center 32 is designed and configured to initiate the pump test run and to start the pump 14 by providing the start signal and to end the pump test run and to stop the pump 14 by providing the stop signal.
  • control center 32 and/or the control unit 17 is designed to suppress the provision of the stop signal in the event of a fire.
  • the signal suppression unit 18 is designed to be free of computer program execution.
  • the control center 32 is preferably designed as a logic unit, for example as a programmable logic controller or the like, and forms a subunit of the control unit 17.
  • the signal suppression unit 18 shown has a second controllable electromagnetic switch (not shown in the drawing) with a controllable second working contact.
  • the stop signal is electrically routed via the second working contact in such a way that the provision of the stop signal when the volume flow of the extinguishing fluid is detected by the flow monitor 24 is suppressed by the second working contact opening.
  • the second working contact is alternatively formed by the flow monitor 24 itself.
  • the first working contact 31 and the second working contact are preferably connected in series.

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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)
  • Control Of Positive-Displacement Pumps (AREA)
EP24209806.9A 2023-02-15 2024-01-19 Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction Pending EP4477277A3 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102023103637 2023-02-15
DE102024101000.2A DE102024101000A1 (de) 2023-02-15 2024-01-15 Löschanlage und Verfahren zum Betreiben einer solchen
EP24152749.8A EP4417270A1 (fr) 2023-02-15 2024-01-19 Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction

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EP24152749.8A Division EP4417270A1 (fr) 2023-02-15 2024-01-19 Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction

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EP4477277A2 true EP4477277A2 (fr) 2024-12-18
EP4477277A3 EP4477277A3 (fr) 2025-03-19

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EP24209806.9A Pending EP4477277A3 (fr) 2023-02-15 2024-01-19 Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction
EP24152749.8A Pending EP4417270A1 (fr) 2023-02-15 2024-01-19 Installation d'extinction et procédé de fonctionnement d'une telle installation d'extinction

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JP6282119B2 (ja) * 2014-01-10 2018-02-21 ホーチキ株式会社 自動弁装置点検システム
DE102018119776A1 (de) * 2018-08-14 2020-02-20 Minimax Viking Research & Development Gmbh Wasserlöschanlage und zugehöriges Verfahren zum Kontrollieren der Wasserlöschanlage
DE102019135815B3 (de) * 2019-12-27 2020-12-17 Minimax Viking Research & Development Gmbh Wasserlöschanlage, Steuereinrichtung, Gefahrenmeldezentrale, Verfahren zum Steuern eines Pumpentestlaufs in einer Wasserlöschanlage und Verwendung einer Fluidumleitung in einer Wasserlöschanlage für einen Pumpentestlauf einer Pumpe

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EP4477277A3 (fr) 2025-03-19
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