JP5922181B2 - Control device and control method for foam aqueous solution generator - Google Patents

Description

  The present invention relates to a control device and a control method for a foam aqueous solution generator used in a foam fire extinguishing facility provided in a storage tank or the like for storing dangerous substances such as petroleum.

  Since the structural example of the conventional foam fire extinguishing equipment was shown in FIG. 6, it demonstrates based on the figure.

  When a fire breaks out, the fire extinguishing equipment control panel 9 is operated to select a protection zone to be extinguished, and the pressurized water supply device 1 is activated via the fire pump control panel 6, thereby pumping up the water from the water tank 2 and pumping it out. The water and the foam fire extinguishing agent pumped from the foam stock solution tank 3 by the pressure are mixed at a predetermined ratio in the mixer 4 to generate a fire-extinguishing foam aqueous solution. And either the division selection valve 11, 12, 21, 22, 41, 42 or the fire hydrant valve 31, 32 which is the 2nd valve of the foam fire extinguisher which performs fire extinguishing, and the secondary pressure control which is the 1st valve Of the valves 10, 20, 30, 40, the one connected to the section selection valve or the fire hydrant valve is opened, the foam fire extinguishing water solution is supplied to the foam fire extinguishing apparatus in the selected protective section, and the foam fire extinguishing apparatus extinguishes the fire. A fire-fighting foam is produced by mixing outside air with a foam foam solution to extinguish the fire.

  For example, when performing fire extinguishing of the oil tank T1, the secondary pressure control valve 10 and the partition selection valve 11 are opened, and the fire-extinguishing foam aqueous solution is pumped to the air foam chamber C disposed on the upper side surface of the oil tank T1. Then, the closing mechanism inside the air foam chamber is opened by the pressure, and foaming is performed here to cover the liquid surface of the oil tank T1 with a fire-extinguishing foam to perform suffocation fire extinguishing.

  In addition to the air foam chamber C, the foam fire extinguishing apparatus that performs fire extinguishing with foam includes foam monitor nozzles N1, N2, foam fire hydrants M1, M2, fixed foam heads H1, H2, etc. The flow rate of the aqueous foam solution for fire fighting is different. More specifically, the flow rate of the foam-extinguishing foam aqueous solution required by the foam-extinguishing device is determined by the primary pressure of the foam-extinguishing device. In consideration of pressure loss due to the diameter and length of piping up to the foam extinguishing device, a piping system is provided so that a necessary pressure is obtained for each protection section, and the secondary pressure control valves 10, 20, 30 and 40, set the delivery pressure of the secondary pressure control valve 10, 20, 30, 40 so as to obtain the necessary pressure for each foam extinguishing device, so as to obtain a predetermined fire fighting foam aqueous solution flow rate ing.

  In the above-mentioned conventional equipment, as long as the device for mixing the fire-extinguishing water and the foam fire-extinguishing agent, the pressurized water supply device and the foam-extinguishing agent pumping device are inverter-controlled pumps, and the fire-extinguishing water and the foam extinguishing agent are mixed in the mixing unit. Pressure measuring means is provided on the primary side of each of the two orifices provided, and the pump is controlled so that the pressure becomes equal to obtain a predetermined mixing ratio, or the flow rate pumped from each pump is Patent Document 1 or 2 discloses a foam extinguishing agent mixing system that monitors and controls to obtain a predetermined mixing ratio.

JP 2010-069198 A JP 2010-0669455 A

  However, the flow rate of the fire-extinguishing foam aqueous solution required by the fire-extinguishing device varies greatly. For example, if there is a foam monitor nozzle that requires a large flow rate of a fire-fighting foam solution of about 2000 liters per minute, a small-flow fire extinguisher such as a foam hydrant that requires 100 liters per minute or a fixed foam head that requires 50 liters per minute There is also. That is, the flow rate of the fire-extinguishing foam aqueous solution varies greatly depending on the type and quantity of the foam-extinguishing apparatus that operates.

  On the other hand, in a mixer using a general Venturi effect, the flow rate range is 100 to 450 liters per minute, 200 to 900 liters per minute, 300 to 1350 liters per minute, 400 to 1800 liters per minute, 700 per minute. A large number of models are prepared in accordance with the flow range of use, up to 3150 liters and 1900 to 8550 liters per minute. In addition, mixers with a particularly wide flow rate range are available in models of 80 to 2000 liters per minute and 200 to 5000 liters per minute, but they are very expensive and may be used depending on the foam fire extinguishing equipment. It is not always possible to respond within the flow range. Therefore, it is difficult for the conventional mixer to maintain a constant mixing ratio in the foam extinguishing equipment in which the flow rate of the extinguishing foam aqueous solution is different for each operated foam extinguishing apparatus.

  In addition, conventional foam extinguishing agents were used at a dilution rate of about 3%, but in recent years, foam extinguishing agents used at a dilution rate of about 1% have appeared, so that the foam stock solution tank can be expected to be downsized. became. However, it is difficult to accurately mix at a high dilution rate with a conventional mixer using a general Venturi effect, and it is even more difficult in the situation where the flow rate range of the fire-fighting foam aqueous solution is large as described above. . Patent Documents 1 and 2 show that the pressurized water supply device can control the mixing ratio of the fire-extinguishing water and the foam fire-extinguishing agent and the flow rate of the fire-extinguishing water by inverter control. No control is disclosed up to the control corresponding to the flow rate of the fire-fighting foam aqueous solution, which varies greatly depending on the quantity.

  The invention controls the generation of foam aqueous solution that controls to a predetermined mixing ratio and flow rate even when the flow rate of the foam aqueous solution for firefighting changes greatly according to the foam extinguishing device to be operated, and a foam extinguishing agent with a high dilution rate is used. The object is to obtain a device and a control method.

The control apparatus of the foam aqueous solution generation device according to the present invention is the mixing of the foam fire extinguishing chemical stored in the foam stock solution tank into one place with one foam extinguishing chemical liquid feeding means to the fire extinguishing water pumped by one pressurized water feeding device. A control device for a foam aqueous solution generator that pumps to a point and mixes at a predetermined ratio to generate a fire extinguishing foam aqueous solution , each of the pipes branching from one outlet of the foam aqueous solution generator and reaching a protective compartment and data specifying the normally closed closing unit interposed, the target liquid feed pressure value and the target density value of the extinguishing foam solution to be sent from said foam solution generating unit, a storage unit for pre-registered in accordance with the protection partition the , A fire detection means or a selection means for selecting a protection zone to be extinguished based on manual operation, and a liquid feeding pressure of the foam aqueous solution for fire extinguishing sent from the foam aqueous solution generator is measured at the outlet of the foam aqueous solution generator Pressure measuring hand And a concentration measuring means for measuring the concentration at the outlet of the aqueous foam solution generator, a signal input section for inputting each measured value, and a selection means from the storage section in the event of a fire . The target liquid supply pressure value, the target concentration value, and the data for specifying the opening / closing means corresponding to the selected protection section are read, and the target liquid supply pressure value and the measured value of the pressure measurement means are compared. The pressurized water feeding apparatus is feedback-controlled so that the measured value becomes the target liquid supply pressure value, and the measured value is compared with the target concentration by comparing the target concentration value with the measured value of the concentration measuring means. feedback controlling the fire-extinguishing foams fluid feeding means so that, and a control unit for opening the identified said switching means is a foam device which flow is different requiring extinguishing foam solution, air foams Ji Nba, foam monitor nozzle, foam fire hydrants, of the fixed foam head, different types of one in even if the extinguishing of the at least two protective compartment foam device is provided, the flow rate required for the foam devices operating A fire extinguishing foam aqueous solution having a concentration of 5 and 10 can be generated and delivered only to the selected protective compartment .
Moreover, the control apparatus of the foam aqueous solution production | generation apparatus which concerns on this invention is one place with one foam fire-extinguishing chemical | medical agent liquid delivery means for the foam water extinguisher stored in the foam stock solution tank to the fire-extinguishing water pumped by one pressurization water supply apparatus. A foam aqueous solution generating device that generates a foam aqueous solution for fire extinguishing by being pumped to a mixing point and mixing at a predetermined ratio, and is a pipe that branches from one outlet of the foam aqueous solution generating device to reach a protection section Data for specifying normally closed opening / closing means intervening in each of the above, a target liquid feed pressure value of the foam aqueous solution for fire extinguishing sent from the foam aqueous solution generation device, and a mixing ratio of the foam fire extinguishing agent mixed in the fire extinguishing water, A storage unit that registers in advance according to the protection zone, a fire detection means or a selection means for selecting a protection zone to be extinguished based on manual operation, and a liquid supply pressure of the foam aqueous solution for fire extinguishing sent from the foam aqueous solution generator The foam water soluble Pressure measuring means for measuring at the outlet of the generating device, and flow rate measuring means for measuring the flow rate before the foam fire-extinguishing agent is mixed with water for fire-fighting that is pumped from the pressurized water feeding device are connected, respectively. A signal input unit to which the measured value is input, and, in the event of a fire, data for specifying the target liquid supply pressure value, the mixing ratio, and the opening / closing unit corresponding to the protection section selected by the selection unit from the storage unit; And the target liquid feeding pressure value is compared with the measured value of the pressure measuring means, and the pressurized water feeding device is feedback-controlled so that the measured value becomes the target liquid feeding pressure value, and the flow rate measurement is performed. A control unit that controls the foam extinguishing chemical liquid feeding means so as to achieve the mixing ratio according to the measured value of the means, and opens the specified opening / closing means, and has different flow rates that require a fire-fighting foam aqueous solution. Disappear Operates in any one of at least two or more protective compartments with different types of foam extinguishing devices: air foam chambers, foam monitoring nozzles, foam hydrants, fixed foam heads The present invention is characterized in that a foam aqueous solution for fire extinguishing having a flow rate and a mixing ratio required by the foam fire extinguishing device can be generated and delivered only to the selected protection section.
Moreover, the control method of the foam aqueous solution production | generation apparatus which concerns on this invention is one place with one foam fire-extinguishing chemical | medical agent liquid delivery means for the foam water extinguisher stored in the foam stock solution tank to the fire-extinguishing water pumped by one pressurized water supply apparatus. This is a method for controlling a foam aqueous solution generator that generates a foam aqueous solution for fire extinguishing by pumping to a mixing point and generating a foam aqueous solution for fire extinguishing. Only the piping is controlled to open, and the liquid feed pressure measurement value is compared with the liquid feed pressure measurement value of the foam aqueous solution for fire extinguishing sent from the foam aqueous solution generator and the target liquid feed pressure value registered according to the protection zone. Feedback control of the pressurized water supply device so that the target liquid supply pressure value becomes the target liquid supply pressure value, and the concentration measurement value of the fire-fighting foam aqueous solution delivered from the foam aqueous solution generation device and the target concentration value registered according to the protection zone Compared with the dark The foam extinguishing agent liquid feeding means is feedback-controlled so that the measured value becomes the target concentration value, and is a foam extinguisher with different flow rates that require a foam aqueous solution for extinguishing. Air foam chamber, foam monitor nozzle, foam fire hydrant, fixed Even if extinguishing is performed in any of at least two or more protective compartments provided with different types of foam extinguishing devices among the foam heads, it generates a foam aqueous solution for extinguishing with the flow rate and concentration required by the operating foam extinguishing device. It is possible to send only to the selected protection section.
Moreover, the control method of the foam aqueous solution production | generation apparatus which concerns on this invention is one place with one foam fire-extinguishing chemical | medical agent liquid delivery means for the foam water extinguisher stored in the foam stock solution tank to the fire-extinguishing water pumped by one pressurized water supply apparatus. This is a method for controlling a foam aqueous solution generator that generates a foam aqueous solution for fire extinguishing by pumping to a mixing point and generating a foam aqueous solution for fire extinguishing. Only the piping is controlled to open, and the liquid feed pressure measurement value is compared with the liquid feed pressure measurement value of the foam aqueous solution for fire extinguishing sent from the foam aqueous solution generator and the target liquid feed pressure value registered according to the protection zone. Feedback control of the pressurized water feeding device so that the target liquid feeding pressure value becomes the target liquid feeding pressure value, and according to the flow rate measurement value before the foam fire-extinguishing agent pressure-fed from the pressurized water feeding device is mixed To achieve the target mixture ratio There are different types of foam extinguishing devices among air foam chambers, foam monitoring nozzles, foam fire hydrants, fixed foam heads that control the extinguishing chemical liquid delivery means and have different flow rates that require fire extinguishing foam aqueous solution. In addition, even if extinguishing is performed in any one of at least two or more protective compartments, a fire extinguishing foam aqueous solution having a flow rate and a mixing ratio required by the activated foam extinguishing device can be generated and sent only to the selected protective compartment. And

The control device and the control method of the foam aqueous solution generation device according to the present invention are optional even when the flow rate of the foam aqueous solution for fire extinguishing varies greatly according to the foam extinguishing device to be operated and a foam extinguishing agent with a high dilution rate is used. The air foam chamber, which is a foam fire extinguishing device that requires different flow rates of the fire-fighting foam aqueous solution, can be controlled to open only the pipes that reach the selected protection section by controlling to the predetermined mixing ratio and flow rate set to Fire extinguishing at a flow rate required by the foam fire extinguisher to be activated in any one of at least two or more protective compartments equipped with different types of foam fire extinguishing devices among foam monitor nozzles, foam hydrants and fixed foam heads An aqueous foam solution can be generated and delivered only to the selected protected compartment .

It is a structural example of the foam fire extinguishing equipment which concerns on Embodiment 1 of this invention. It is a structural example of the foam fire extinguishing equipment which concerns on Embodiment 2 of this invention. It is a structural example of the foam fire extinguishing equipment which concerns on Embodiment 3 of this invention. It is a structural example of the foam fire extinguishing equipment which concerns on Embodiment 4 of this invention. It is a structural example of the foam fire extinguishing equipment which concerns on Embodiment 5 of this invention. It is an example of composition of the conventional foam fire extinguishing equipment.

[Embodiment 1]
A foam fire extinguishing facility according to an embodiment of the present invention will be described with reference to FIG.

First, the fluid system configuration of the foam fire extinguishing facility according to the present embodiment will be described.
As a foam fire extinguisher suitable for extinguishing the protection target for each protection zone, a plurality of protection zones as fire fighting activity units are appropriately set according to the oil tanks T1, T2, which are the protection targets to be extinguished, parking lots, etc. A foam make chamber C, foam monitor nozzles N1 and N2, fixed foam heads H1 and H2, and foam fire hydrants M1 and M2 are disposed.

  The oil tanks T1 and T2 are provided with a foam make chamber C as a foam fire extinguisher. Section selection valves 11 and 12 as second valves that are normally closed are provided in the immediate vicinity of the protection sections set for each of the oil tanks T1 and T2, and the piping to which the foam make chamber C is connected is An opening valve 100 as a first valve that is normally closed is provided on the base end side via the partition selection valves 11 and 12.

  In the immediate vicinity of the protective compartment where the foam monitor nozzles N1 and N2 as the foam extinguishers are respectively provided, compartment selection valves 21 and 22 as second valves that are normally closed are provided, and the foam monitor nozzle N1 is provided. , N2 is connected via the section selection valves 21 and 22 with a release valve 200 as a first valve that is normally closed on the base end side.

  Foam hydrants M1 and M2 arranged as foam fire extinguishing devices are provided with hydrant valves 31 and 32 that are normally closed in the immediate vicinity of the primary side, and the pipes to which the foam hydrants M1 and M2 are connected are An open valve 300 as a first valve that is normally closed is provided on the base end side through the fire hydrant valves 31 and 32.

  In the parking lot, fixed foam heads H1 and H2 are provided as foam extinguishing devices. Section selection valves 41 and 42 as second valves that are normally closed are provided in the immediate vicinity of the protection sections set for each of the fixed foam heads H1 and H2, and the fixed foam heads H1 and H2 are connected thereto. The piping to be provided is provided with an opening valve 400 as a first valve that is normally closed at the base end portion via the section selection valves 41 and 42.

  As described above, the primary side of the section selection valves 11, 12, 21, 22, 41, 42 and the fire hydrant valves 31, 32, which are the second valves, combines a plurality of protective sections into a fire-fighting foam aqueous solution. It is connected to the secondary side of the open valves 100, 200, 300, and 400 that are the first valves via a pipe that is a liquid feed pipe. The primary sides of the release valves 100, 200, 300, and 400 are combined into a pipe that is one fire-fighting foam aqueous solution feeding pipe and connected to the secondary side of the foam aqueous solution generation device 710.

  The foam aqueous solution generator 710 includes a pressure measuring means 71 and a concentration measuring means 73 for measuring the liquid feeding pressure of the fire-fighting foam aqueous solution to be sent out.

  And the primary side of the said foam aqueous solution production | generation apparatus 710 is connected to the fire prevention water tank 2 by the piping for water for fire extinguishing through the pressurized water supply apparatus 5 which pumps the fire extinguishing water, and in the fire extinguishing water stored in this fire prevention water tank 2 The water supply for fire extinguishing is pumped up by operating the pressurized water supply device 5 and is supplied to the foam aqueous solution generator 710.

  Next, the electrical system configuration of the foam fire extinguishing facility according to the present embodiment will be described.

  The foam fire extinguishing equipment according to the present embodiment includes a fire extinguishing pump control panel 60 that performs inverter control of the pressurized water feeding apparatus 5, and a foam fire extinguishing chemical liquid feeding pump that will be described later as a foam fire extinguishing chemical liquid feeding control means in the foam aqueous solution generator 710. 7, a foam fire-extinguishing chemical liquid feed pump control panel 61 for controlling the foam fire-extinguishing chemical liquid pump 7 by an inverter, and a foam fire-extinguishing equipment control panel 93 for controlling the entire foam fire extinguishing equipment.

  The foam fire extinguishing equipment control panel 93 includes a signal input unit 902, a signal output unit 905, a display / operation unit 906, a storage unit 908, and a control unit 909.

  The signal input unit 902, the signal output unit 905, the display / operation unit 906, and the storage unit 908 are electrically connected to the control unit 909 and controlled by the control unit 909.

  The signal input unit 902 is electrically connected to the pressure measurement unit 71 and the concentration measurement unit 73, and the signal output unit 905 includes the release valves 100, 200, 300, 400, and the partition selection valves 11, 12, 21, 22, 41, and 42, and the control unit 909 is electrically connected to the fire-extinguishing pump control panel 60 and the foam-extinguishing chemical liquid feeding pump control panel 61.

  The storage unit 908 registers in advance a target liquid supply pressure value of an opening valve, a section selection valve, and a foam aqueous solution generation device 710 that are opened in the event of a fire in accordance with the protection section, and a target concentration value of the foam aqueous solution for fire extinguishing. Furthermore, the control program of the foam fire extinguishing equipment control panel is stored in advance.

  Hereinafter, the main apparatus constituting the foam fire-extinguishing equipment will be described in more detail.

<Bubble aqueous solution generator>
The foam aqueous solution generator 710 includes a foam stock solution tank 30 storing a foam extinguishing agent, a foam fire extinguishing agent feed pump 7 that pumps the foam extinguishing agent from the foam stock solution tank 30, and a foam extinguishing agent in the foam stock solution tank 30. Provided with a check valve 86 provided so as not to mix the water for fire extinguishing, pressure measuring means 71, and concentration measuring means 73, the primary side to the pressurized water supply device 5, the secondary side to the release valve 100, 200, 300, and 400 are connected to each other, and in the secondary side piping of the check valve 86, the fire extinguishing water flowing in from the pressurized water feeding device 5 and the foam fire extinguishing chemical pumped from the foam fire extinguishing chemical liquid feeding pump 7 are connected. Are mixed to produce an aqueous foam solution for fire fighting.

  The pressurized water delivery apparatus 5 is controlled and operated so that the measurement value of the pressure measurement means 71 becomes the target liquid delivery pressure value, and the foam fire extinguishing chemical liquid delivery pump so that the measurement value of the concentration measurement means 73 becomes the target concentration value. 7 is controlled and operated.

<Bubble fire extinguishing equipment control panel>
The signal input unit 902 receives the measurement value of the pressure measurement unit 71 and the measurement value of the concentration measurement unit 73, and each value is sent to the control unit 909.

  The control unit 909 is electrically connected to the fire extinguishing pump control panel 60 and the foam fire extinguishing chemical liquid feed pump control panel 61, and sends an operation command to each of them and outputs operation data so as to perform feedback control to be described later. give.

  The protection zone to be extinguished is selected by operating the display / operation unit 906. At this time, the control is performed so that only one protection section can be selected without simultaneously selecting a plurality of protection sections. The control unit 909 reads out the target liquid supply pressure value and concentration target value of the fire-fighting foam aqueous solution registered in advance in the storage unit 908 according to the selected protection section, and the fire-extinguishing pump control panel 60 and the foam fire-extinguishing unit. The medicine feeding pump control panel 61 is instructed to operate, and feedback control is performed so that the measured values of the pressure measuring means 71 and the concentration measuring means 73 become the target values, respectively, which are opened via the signal output unit 905. The opening valves 100, 200, 300, 400 and the partition selection valves 11, 12, 21, 22, 41, 42 to be opened are controlled to be opened.

  The storage unit 908 stores a control program of the foam fire extinguishing equipment control panel 93, and as a protection zone data to be extinguished, a corresponding open valve, a zone selection valve, and a target liquid feed pressure of the fire-extinguishing foam aqueous solution to be sent out And the target concentration value of the fire-fighting foam aqueous solution are registered, and the display / operation unit 906 displays the operation status of the foam fire-extinguishing equipment by the provided display device so that the operator can grasp the operation status.

<Fire pump control panel>
The fire-extinguishing pump control panel 60 performs inverter control of the pressurized water supply device 5 based on the operation command and operation data from the control unit 909 of the foam fire-extinguishing equipment control panel 93. In other words, the fire fighting pump control panel 60 and the pressurized water feeding device 5 have a function of controlling the flow rate of fire fighting water. Accordingly, fire extinguishing water is sent to the foam aqueous solution generator 710 in accordance with a command from the foam fire extinguishing equipment control panel 93 that performs feedback control so that the measurement value of the pressure measuring means 71 becomes the target liquid supply pressure value.

<Foam-extinguishing chemical feed pump control panel>
The foam fire-extinguishing chemical liquid feed pump control panel 61 performs inverter control of the foam fire-extinguishing chemical liquid feed pump 7 based on the operation command and operation data from the control unit 909 of the foam fire extinguishing equipment control board 93. That is, the foam fire-extinguishing chemical liquid feed pump control panel 61 and the foam fire-extinguishing chemical liquid delivery pump 7 have a function of controlling the flow rate of the foam fire-extinguishing chemical liquid feed. Thus, in accordance with a command of the foam extinguishing equipment control panel 93 that performs feedback control so that the measured value of the concentration measuring means 73 becomes the concentration target value, the foam is extinguished at a flow rate with the concentration of the fire-extinguishing foam aqueous solution as the concentration target value. Deliver medication.

<Open valve>
The fire-fighting foam aqueous solution delivered from the foam aqueous solution generation device 710 is sent to the secondary side opening valve. Conventionally, a secondary pressure control valve has been used for this part, and the foam aqueous solution for fire extinguishing has been reduced to a predetermined pressure and sent to the foam fire extinguisher. Since the delivery pressure is controlled so that a necessary and sufficient flow rate of the fire-fighting foam aqueous solution is delivered to the fire-extinguishing device, and the foam-extinguishing device is controlled so as to be within a predetermined pressure range, the secondary pressure used in the past is used. There is no need to provide a control valve, and it is possible to provide an inexpensive release valve that simply opens the portion by remote control. The release valves 100, 200, 300, and 400 are registered in advance in the storage unit 908 of the foam fire extinguishing equipment control panel 93 in accordance with the protection zone to be operated.

<Foam extinguishing device>
In addition to the air foam chamber C, the foam fire extinguishing apparatus that performs fire extinguishing with foam includes foam monitor nozzles N1, N2, foam fire hydrants M1, M2, fixed foam heads H1, H2, etc. The flow rate of the foam aqueous solution for fire extinguishing required is different, and the respective flow rates are determined by the primary pressures of the foam fire extinguishing devices C, N1, N2, M1, M2, H1, and H2. These foam fire extinguishing apparatuses mix external air with the supplied fire-fighting foam aqueous solution to generate fire-extinguishing foam, and perform initial fire extinguishing such as fire suppression by the heat insulation effect of the fire-extinguishing foam and suffocation fire by the suffocation effect.

<Description of operation>
Operation | movement of the foam fire extinguishing equipment comprised as mentioned above is demonstrated. When a fire occurs, the operator operates the display / operation unit 906 of the foam fire extinguishing equipment control panel 93, selects a protection zone to which a protection target to be extinguished belongs, and commands fire extinguishing to the protection zone. Upon receiving a signal from the display / operation unit 906, the control unit 909 reads data corresponding to the selected protection section from the storage unit 908, and selects a predetermined opening valve and section selection via the signal output unit 905. The valve is selected and opened, operation is instructed to the fire extinguishing pump control panel 60 and the foam extinguishing chemical liquid feeding pump control panel 61, operation data is given, and the pressurized water feeding device 5 and the foam fire extinguishing chemical liquid feeding pump 7 are operated. The electrical pressure sent from the pressure measuring means 71 and the concentration measuring means 73 is received by the signal input unit 902 and the control unit 909 recognizes the delivery pressure and concentration of the fire-fighting foam aqueous solution. The control unit 909 compares the measured delivery pressure and concentration with the target liquid delivery pressure value and concentration target value registered in advance in the storage unit 908, and the fire extinguishing pump control panel 60 and the foam extinguishing chemical delivery. The pressure water supply device 5 and the foam fire-extinguishing chemical liquid feed pump 7 are feedback-controlled through the liquid pump control panel 61, respectively, and are operated so as to send out the fire-fighting foam aqueous solution at a predetermined liquid supply pressure and a predetermined concentration. The fire-extinguishing foam aqueous solution in which fire-extinguishing water and foam fire-extinguishing agent are mixed at a predetermined ratio (for example, 3% or 1%) in accordance with a predetermined dilution ratio determined by the foam extinguishing agent to be used is generated and opened. The fire-extinguishing foam aqueous solution is pumped to the foam fire-extinguishing apparatus that performs fire-extinguishing via an open valve and the compartment selection valve.

  The foam fire extinguishing apparatus that performs fire extinguishing mixes and foams the supplied fire-extinguishing foam aqueous solution and discharges the generated fire-extinguishing foam to the protection target to perform initial fire extinguishing.

  For example, if the fire extinguishing section is defined as an oil tank T1 for the convenience of explanation, the operator operates the display / operation unit 906 of the foam fire extinguishing equipment control panel 93 to operate the protective section to which the oil tank T1 belongs. Specify to start fire extinguishing.

  The foam fire extinguishing equipment control panel 93 receives a signal from the display / operation unit 906 by the control unit 909, reads data registered in advance for the designated protection zone from the storage unit 908, and according to the data Then, control signals are sent to the release valve 100 and the partition selection valve 11 via the signal output unit 905, and these are opened.

  Further, the control unit 909 instructs the fire-extinguishing pump control panel 60 and the foam fire-extinguishing chemical liquid feeding pump control panel 61 to operate according to the data, and operates the pressurized water feeding device 5 and the foam fire-extinguishing chemical liquid feeding pump 7. In the former, the measured value of the pressure measuring means 71 becomes the target liquid supply pressure value registered in the storage unit 908 in advance, and in the latter, the measured value of the concentration measuring means 73 is registered in the storage unit 908 in advance. Foam extinguishing which is controlled by feedback control so as to achieve a concentration target value, operates so as to be delivered at a predetermined liquid feeding pressure and a predetermined concentration, and uses water for extinguishing water and foam fire extinguishing chemical in the foam aqueous solution generation device 710 A fire-fighting foam aqueous solution mixed at a predetermined ratio (for example, 3% or 1%) according to a predetermined dilution rate determined by the medicine is generated.

  The foam aqueous solution for fire extinguishing having a predetermined liquid feed pressure and concentration generated by the foam aqueous solution generator 710 is pumped to the air foam chamber C disposed in the oil tank T1 via the release valve 100 and the partition selection valve 11. The air foam chamber C mixes and foams the extinguishing foam aqueous solution to generate a foam for fire extinguishing, and sends it to the oil tank T1 to cover the liquid level and extinguish the suffocation.

[Embodiment 2]
A second embodiment of the present invention will be described with reference to FIG. In FIG. 2, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. The present embodiment relates to another method for feedback control of the concentration of the fire-fighting foam aqueous solution.

  The difference between the configuration of the present embodiment and the configuration of the first embodiment is that, instead of the foam stock solution tank 30, the primary secondary in the tank is partitioned by a diaphragm, and the foam extinguishing agent is placed on the secondary side. The point which became the stored foam stock solution tank 3, the point provided with the flow control valve 8 on the secondary side of the foam stock solution tank 3 instead of the foam fire-extinguishing agent feed pump 7, and the foam fire-extinguishing agent feed pump control panel 61 are used. There is no point. Accompanying these differences, the primary side of the foam stock solution tank 3 is connected to the inlet of the foam aqueous solution generator 720, and the fire extinguishing water flowing in from the pressurized water supply device 5 is introduced and pressurized. The equipment control panel 93 becomes the foam fire extinguishing equipment control board 97, and the internal control unit 909 becomes the control unit 910, and controls the flow rate control valve 8 instead of controlling the foam extinguishing chemical liquid feed pump control panel 61 that is no longer used. It is different from point that became.

  These are replaced in the configuration of the first embodiment, and the coupling relationship with other devices and piping is not changed. Hereinafter, the main devices constituting the foam fire extinguishing device will be described in more detail from those different from the first embodiment.

<Bubble fire extinguishing equipment control panel>
In addition to the signal input unit 902, the signal output unit 905, the display / operation unit 906, and the storage unit 908 similar to those of the foam fire extinguishing facility control panel 93 of the first embodiment, the foam fire extinguishing facility control panel 97 is similar to the other embodiments. Includes a different control unit 910.

  The control unit 910 reads out the target liquid supply pressure value and concentration target value of the fire-fighting foam aqueous solution previously stored in the storage unit 908 according to the selected section, and the fire-extinguishing pump control panel 60 and the flow control valve 8 is operated and feedback control is performed so that the measured values of the pressure measuring unit 71 and the concentration measuring unit 73 become the target values, respectively, and the opening valve and the section selection to be opened via the signal output unit 905 Control the opening of the valve.

<Foam concentrate tank>
The foam stock solution tank 3 used in the present embodiment includes a primary side of the tank filled with the fire-extinguishing water from the inlet portion of the foam aqueous solution generator 720 into which the fire-extinguishing water pumped from the pressurized water feeding device 5 flows, and a flow rate described later. The tank secondary side which is connected to the control valve 8 and is filled with the foam fire extinguishing agent, and the tank primary side and the tank secondary side are arranged so as to be separated, and the tank primary side is filled with fire extinguishing water. It comprises a diaphragm (not shown) that pressurizes the secondary side of the tank.

<Flow control valve>
The flow rate control valve 8 is interposed in a pipe from the secondary side of the foam stock solution tank 3 to the check valve 86, and controls the opening degree of a valve body (not shown) to send the foam sent from the foam stock solution tank 3. Control the flow rate of fire-extinguishing agent.

  However, since the flow rate of foam extinguishing agent is not uniquely determined only by the opening of the valve body, the concentration of the foam aqueous solution for fire extinguishing after mixing with the water for fire extinguishing is detected, and the concentration is the concentration target value. Feedback control is performed so that

<Description of operation>
The operation of the foam fire extinguishing equipment configured as described above is basically the same as that of the first embodiment. The control unit 909 controls the foam fire extinguishing chemical liquid feed pump 7 and the foam fire extinguishing chemical liquid feed pump control panel 61. The only difference is that the flow rate control valve 8 is controlled by the control unit 910 instead of being controlled via the control.

[Embodiment 3]
A third embodiment of the present invention will be described with reference to FIG. In FIG. 3, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. In this embodiment, instead of feedback-controlling the concentration of the fire-extinguishing foam aqueous solution, the foam-extinguishing agent is mixed at a flow rate of a predetermined ratio (mixing ratio) with respect to the flow rate of fire-extinguishing water.

  The configuration in the present embodiment is different from the configuration in the first embodiment mainly in that a flow rate measurement unit 72 is provided instead of the concentration measurement unit 73. The difference accompanying this is that the foam aqueous solution generator 710 is changed to 700, and the foam fire extinguishing equipment control panel 93 is changed to the foam fire extinguishing equipment control panel 92. Further, the foam fire extinguishing equipment control is controlled. In the panel, the signal input unit 902 becomes 901, the storage unit 908 becomes 907, and the control unit 909 becomes the control unit 911. The flow rate measuring means 72 is provided at the inlet of the foam aqueous solution generation device 700 and measures the flow rate of fire-extinguishing water flowing from the pressurized water supply device 5. These are replaced in the configuration of the first embodiment, and the coupling relationship with other devices and piping is not changed.

  Hereinafter, the main devices constituting the foam fire extinguishing device will be described in more detail from those different from the first embodiment.

<Bubble fire extinguishing equipment control panel>
The difference between the foam fire-extinguishing equipment control panel 92 and the foam fire-extinguishing equipment control panel 93 will be described below.
(1) Signal input unit 901
Instead of the concentration measuring means 73, a signal from the flow measuring means 72 is input. The measured value of the flow rate measuring means 72 is sent to the control unit 911 together with the measured value of the pressure measuring means 71 and used for controlling the foam fire-extinguishing chemical liquid feeding pump 7.
(2) Storage unit 907
Instead of storing the target concentration value of the fire-extinguishing foam aqueous solution, the mixing ratio for controlling the flow rate of the foam-extinguishing agent with respect to the flow rate of the fire-extinguishing water is registered.
(3) Control unit 911
The difference from the control unit 909 is that the liquid supply flow rate corresponding to the mixing ratio registered in the storage unit 907 is calculated according to the flow rate of the fire extinguishing water measured by the flow rate measuring means 72, and the foam fire extinguishing chemical liquid feed pump control panel is calculated. It is to perform inverter control of the foam fire-fighting chemical liquid feed pump 7 via 61.

<Description of operation>
The operation of the foam fire extinguishing equipment configured as described above is basically the same as that of the first embodiment, and the foam fire extinguishing chemical liquid feeding pump is set so that the concentration measuring means 73 has a predetermined target concentration value. 7 is controlled by the control unit 909 via the foam fire-extinguishing chemical liquid feed pump control panel 61, so that the foam fire-extinguishing chemical liquid feed pump 7 has a predetermined mixing ratio according to the measurement value of the flow rate measuring means 72. The only difference is that the control unit 911 calculates the amount of liquid to be controlled via the foam extinguishing chemical liquid feed pump control panel 61.

[Embodiment 4]
In the present embodiment, an open valve provided on the secondary side of the aqueous foam solution generator is used as a secondary pressure control valve, and fire extinguishing is possible in a plurality of protection sections. For convenience, the present embodiment will be described on the assumption that the foam extinguishing agent is mixed at a flow rate of a predetermined ratio (mixing ratio) with respect to the flow rate of fire-extinguishing water as in the third embodiment. Similarly, the concentration of the fire-fighting foam aqueous solution may be feedback controlled.

  A fourth embodiment of the present invention will be described with reference to FIG. In FIG. 4, the same parts as those of the third embodiment are denoted by the same reference numerals, and the description thereof is omitted. The configuration of the present embodiment differs from the configuration of the third embodiment mainly in that secondary pressure control valves 10, 20, 30, 40 are provided in place of the release valves 100, 200, 300, 400. . The difference accompanying this is that the foam fire extinguishing equipment control panel 92 is changed to the foam fire extinguishing equipment control board 94, and the storage unit 907 is changed to 914 inside the foam fire extinguishing equipment control panel. The part 911 becomes the control part 912. These are replaced in the configuration of the third embodiment, and the coupling relationship with other devices and piping does not change.

  Hereinafter, the main devices constituting the foam fire extinguishing device will be described in more detail from those different from the third embodiment.

<Bubble fire extinguishing equipment control panel>
The point that the foam fire-extinguishing equipment control panel 94 is different from the foam fire-extinguishing equipment control panel 92 will be described below.
(1) Storage unit 914
Controls the secondary pressure control valve and section selection valve that are opened in the event of a fire, the target pressure of the fire-extinguishing foam aqueous solution to be delivered, and the flow rate of the foam fire-extinguishing agent relative to the fire-extinguishing water In addition to storing the control program used by the control unit 912, the upper limit of the water supply amount for fire extinguishing, or the number of protective compartments capable of simultaneous fire extinguishing is registered.
(2) Control unit 912
In accordance with the fire-extinguishing water flow rate measured by the flow rate measuring means 72, the flow rate of the foam extinguishing agent corresponding to the mixing ratio registered in the storage unit 914 is calculated, and the foam extinguishing agent via the foam extinguishing agent liquid feeding pump control panel 61 is calculated. The drug delivery pump 7 is inverter-controlled.
When instructed to extinguish multiple protective compartments, calculate the total amount of fire-fighting water and foam extinguishing agent to be sent out, and determine whether the upper limit of the fire-fighting water supply amount or the number of protective compartments that can be extinguished simultaneously is not exceeded. A program to perform fire extinguishing is provided.

<Description of operation>
Operation | movement of the foam fire extinguishing equipment comprised as mentioned above is demonstrated. When a fire occurs, the operator operates the display / operation unit 906 of the foam fire extinguishing equipment control panel 94 to select a protection zone to be extinguished, and command fire extinguishing to the protection zone. At this time, as long as the capacity of the fire prevention water tank 2, the capacity of the foam stock solution tank 30, the upper limit of the flow rate of the pressurized water supply device 5 and the upper limit of the flow rate of the foam fire-extinguishing chemical liquid pump are allowed, Simultaneous selection is allowed, and the number of simultaneous operations is limited by the sum of the flow rates of the fire-fighting foam aqueous solution required in a plurality of protective zones to be selected.

  Upon receiving a signal from the display / operation unit 906, the control unit 912 reads out data corresponding to the selected protection section from the storage unit 914, and outputs a predetermined secondary pressure control valve via the signal output unit 905. And select and open the compartment selection valve.

  The control section 912 commands the operation of the fire extinguishing pump control panel 60 and the foam fire extinguishing chemical liquid feeding pump control board 61, and feedback-controls the pressurized water feeding device 5 so that the pressure measuring means 71 becomes the target liquid feeding pressure value. In addition, according to the measurement value of the flow rate measuring means 72, the mixing ratio registered in advance in the storage unit 914 is determined according to a predetermined dilution rate (for example, 3% or 1%) determined by the foam extinguishing agent to be used. The liquid supply flow rate of the corresponding foam fire extinguishing agent is calculated, and the foam extinguishing agent liquid delivery pump 7 is inverter-controlled via the foam fire extinguishing agent delivery pump control panel 61. The fire extinguishing water and the foam fire extinguishing agent are mixed in this way to produce a fire extinguishing foam aqueous solution, and the fire extinguishing apparatus that performs fire extinguishing via the opened secondary pressure control valve and the partition selection valve is used for the fire extinguishing apparatus. Pump foam aqueous solution.

  The foam extinguishing apparatus that performs fire extinguishing mixes and foams the supplied foam aqueous solution with outside air, discharges the generated fire-extinguishing foam to the protection target, and performs initial fire extinguishing.

  For example, if the fire extinguishing sections are defined as the oil tanks T1, T2 and the foam monitor nozzle N1 for convenience of explanation, the operator operates the display / operation unit 906 of the foam fire extinguishing equipment control panel 92, A plurality of protection zones to which the oil tanks T1 and T2 and the foam monitor nozzle N1 belong are designated and fire extinguishing is instructed.

  The foam fire extinguishing equipment control panel 92 receives a signal from the display / operation unit 906 by the control unit 912, reads data registered in advance for the designated protection zone from the storage unit 914, and according to the data Then, control signals are sent to the secondary pressure control valves 10 and 20 and the partition selection valves 11, 12 and 21 via the signal output unit 905, and these are opened.

  Further, the control unit 912 commands the operation of the fire extinguishing pump control panel 60 and the foam fire-extinguishing chemical liquid feeding pump control panel 61 according to the data, and the fire extinguishing liquid generator 700 generates a fire extinguishing with a target liquid feeding pressure value. A fire-fighting foam aqueous solution is produced by mixing water and a foam fire-extinguishing agent at a predetermined ratio.

  The foam aqueous solution for fire extinguishing generated by the foam aqueous solution generator 700 is disposed in the oil tanks T1, T2 and the foam monitor nozzle N1 via the secondary pressure control valves 10 and 20 and the partition selection valves 11, 12 and 21. The air foam chamber C and the foam monitor nozzle N1 are pumped to the air foam chamber C and the foam monitor nozzle N1, and the air tank C1 and the foam monitor nozzle N1 mix and foam the outside air into the fire-fighting foam aqueous solution to generate a fire-extinguishing foam, and the oil tank T1 , T2 and the foam monitor nozzle N1, and the suffocation extinguishing is performed covering the liquid level of the oil tanks T1 and T2 and the fire point where the foam monitor nozzle is aimed.

  As described above, the foam fire-extinguishing equipment of the present embodiment sends out fire-fighting water by inverter-controlling the pressurized water-feeding device so that the target liquid-feeding pressure value registered in advance according to the section to be extinguished. The foam extinguishing agent is sent out and mixed by inverter control so that the mixing ratio is registered in advance in the irrigation water, the foam aqueous solution for fire extinguishing is sent out from the foam aqueous solution generator 700, and the secondary side of the foam aqueous solution generator 700 is sent to the secondary side. A secondary pressure control valve is provided to enable simultaneous operation of a plurality of foam extinguishing devices.

[Embodiment 5]
A fifth embodiment of the present invention will be described with reference to FIG. In FIG. 5, the same parts as those of the third embodiment are denoted by the same reference numerals, and the description thereof is omitted. The configuration of the present embodiment is different from the configuration of the third embodiment mainly in that a fire detection device D, a fire receiving panel R, and a local operation panel L are newly provided. Along with this, a foam fire extinguishing equipment control panel 96 is provided instead of the foam fire extinguishing equipment control panel 92 in the third embodiment. The foam fire extinguishing equipment control panel 96 replaces the signal input unit 901, the control unit 911, and the storage unit 907 of the foam fire extinguishing equipment control panel 92 in Embodiment 3, respectively, with a signal input unit 904, a control unit 913, and a storage unit. 903.

  The fire detection device D includes the fire receiving panel R, the fire receiving panel R includes the signal input unit 904 of the foam fire extinguishing equipment control panel 96, and the local operation panel L includes the foam fire extinguishing equipment control panel 96. The signal input unit 904 is electrically connected to each other.

<Description of operation>
The foam fire extinguishing equipment according to the present embodiment is configured so that a fire signal from the fire detecting device D is sent via the fire receiving panel R to the fire detecting device D by issuing a fire detection device D that monitors a predetermined protective zone. When the signal input unit 904 receives 96, the foam extinguishing device in the protection section is automatically activated to extinguish the fire. Other operations are the same as those in the third embodiment.

  Although not shown, a configuration in which the fire detection device D, the fire receiving panel R, and the local operation panel L are provided in any of the first, second, and fourth embodiments is also possible. When the above configuration is applied to the fourth embodiment, simultaneous fire extinguishing is possible for a plurality of protection sections as in the fourth embodiment.

1, 5 Pressurized water supply device, 3, 30 Foam stock solution tank, 6, 60 Fire extinguishing pump control panel,
61 Foam extinguishing agent liquid pump control panel, 7 Foam extinguishing agent liquid pump,
8 Flow control valve, 700, 710, 720 Foam aqueous solution generator,
9, 92, 93, 94, 96, 97 Foam extinguishing equipment control panel,
901, 902, 904 signal input unit, 905 signal output unit,
903, 907, 908, 914 storage unit, 906 operation / display unit,
909, 910, 911, 912, 913 control unit,
11, 12, 21, 22, 41, 42 compartment selection valve,
10, 20, 30, 40 Secondary pressure control valve,
100, 200, 300, 400 release valve,
80, 81, 82, 83, 84, 85 Gate valve,
31, 32 Fire hydrant valve, 86 Check valve, 4 Mixer,
T1, T2 Oil tank, C foam make chamber,
N1, N2 foam monitor nozzle, M1, M2 foam fire hydrant,
H1, H2 fixed foam head,
L local operation panel, D fire detection device, R fire receiving panel,

Claims (4)

The fire extinguishing water are pumped one pressurized pumping water system, are mixed at a predetermined ratio is pumped to the mixing point of one place fire-extinguishing foams which were stored in Awagen'eki tank with a single fire-extinguishing foams fluid feeding means, for extinguishing A control device for a foam aqueous solution generator for generating a foam aqueous solution,
Data specifying the normally closed opening / closing means that is branched from one outlet of the foam aqueous solution generation device and intervenes in each of the pipes to the protection section, and target delivery of the fire-fighting foam aqueous solution delivered from the foam aqueous solution generation device a storage unit for pre-registered in accordance with the liquid pressure value and the target density value, into protective zone,
A selection means for selecting a fire detection means or a protective zone to be extinguished based on manual operation;
Pressure measuring means for measuring the liquid feeding pressure of the foam aqueous solution for fire extinguishing delivered from the foam aqueous solution generator at the outlet of the foam aqueous solution generator, and concentration measuring means for measuring the concentration at the outlet of the foam aqueous solution generator And a signal input unit to which each measured value is input,
In the event of a fire, the target liquid supply pressure value corresponding to the protection section selected by the selection means, the target concentration value, and data specifying the opening / closing means are read from the storage unit, and the target liquid supply pressure value and the The pressure measurement device is compared with the measurement value of the pressure measurement means, and the pressurized water feeding device is feedback-controlled so that the measurement value becomes the target liquid supply pressure value, and the target concentration value and the measurement value of the concentration measurement means are A control unit that feedback-controls the foam fire-extinguishing chemical liquid feeding means so that the measured value becomes the target concentration in comparison, and opens the specified opening / closing means ;
With
Among foam extinguishing devices with different flow rates that require a foam aqueous solution for fire extinguishing, of at least two or more protective compartments provided with different types of foam extinguishing devices among air foam chambers, foam monitoring nozzles, foam hydrants, and fixed foam heads No matter which of the above, the foam aqueous solution generator control device is capable of generating a fire extinguishing foam aqueous solution having a flow rate and a concentration required by the activated foam extinguishing device and delivering it only to the selected protection section. . The fire extinguishing water are pumped one pressurized pumping water system, are mixed at a predetermined ratio is pumped to the mixing point of one place fire-extinguishing foams which were stored in Awagen'eki tank with a single fire-extinguishing foams fluid feeding means, for extinguishing A control device for a foam aqueous solution generator for generating a foam aqueous solution,
Data specifying the normally closed opening / closing means that is branched from one outlet of the foam aqueous solution generation device and intervenes in each of the pipes to the protection section, and target delivery of the fire-fighting foam aqueous solution delivered from the foam aqueous solution generation device a storage unit for pre-registered in accordance with the mixing ratio of the foam agent mixed liquid pressure value and the fire extinguishing water, to protective compartment,
A selection means for selecting a fire detection means or a protective zone to be extinguished based on manual operation;
Pressure measuring means for measuring the liquid feeding pressure of the foam aqueous solution for fire extinguishing delivered from the foam aqueous solution generating device at the outlet of the foam aqueous solution generating device, and the foam fire extinguishing agent for the fire extinguishing water pumped from the pressurized water feeding device. A flow rate measuring means for measuring a flow rate before mixing, and a signal input unit to which each measured value is input; and
In the event of a fire, the target liquid supply pressure value corresponding to the protection section selected by the selection means, the mixing ratio, and the data specifying the opening / closing means are read from the storage unit, and the target liquid supply pressure value and the pressure are read out. The measured value is compared with the measured value, and the pressurized water feeding device is feedback-controlled so that the measured value becomes the target liquid supply pressure value, and the mixing ratio is set according to the measured value of the flow rate measuring unit. A control unit for controlling the foam extinguishing agent liquid feeding means and opening the specified opening and closing means ,
With
Among foam extinguishing devices with different flow rates that require a foam aqueous solution for fire extinguishing, of at least two or more protective compartments provided with different types of foam extinguishing devices among air foam chambers, foam monitoring nozzles, foam hydrants, and fixed foam heads Regardless of the fire extinguishing method, a foam aqueous solution for fire extinguishing that has a flow rate and a mixing ratio required for the foam extinguishing device to be operated can be generated and delivered only to the selected protective compartment. apparatus. The fire extinguishing water are pumped one pressurized pumping water system, are mixed at a predetermined ratio is pumped to the mixing point of one place fire-extinguishing foams which were stored in Awagen'eki tank with a single fire-extinguishing foams fluid feeding means, for extinguishing A control method of a foam aqueous solution generator for producing a foam aqueous solution,
In the event of a fire, select a protection zone to extinguish, and control only the piping that leads to the selected protection zone,
The liquid feed pressure measurement value of the foam aqueous solution for fire extinguishing delivered from the foam aqueous solution generator is compared with the target liquid feed pressure value registered according to the protection zone, and the liquid feed pressure measurement value is the target liquid feed pressure value. Feedback control of the pressurized water supply device so that
The foam extinguishing agent is configured such that the concentration measurement value of the fire-fighting foam aqueous solution delivered from the foam aqueous solution generation device is compared with the target concentration value registered in accordance with the protection zone so that the concentration measurement value becomes the target concentration value. Feedback control of liquid feeding means,
Among foam extinguishing devices with different flow rates that require a foam aqueous solution for fire extinguishing, of at least two or more protective compartments provided with different types of foam extinguishing devices among air foam chambers, foam monitoring nozzles, foam hydrants, and fixed foam heads The method of controlling a foam aqueous solution generator , wherein the foam aqueous solution for fire extinguishing with the flow rate and concentration required by the activated foam fire extinguisher can be generated and sent only to the selected protection section , regardless of which one of the fire extinguishers is used. .   Foam fire extinguisher stored in the foam stock solution tank is pumped to one mixing point by one foam fire extinguishing chemical liquid feed means and mixed at a predetermined rate to fire extinguishing water pumped by one pressurized water feeder. A control method of a foam aqueous solution generator for producing a foam aqueous solution,
  In the event of a fire, select a protection zone to extinguish, and control only the piping that leads to the selected protection zone,
  The liquid feed pressure measurement value of the foam aqueous solution for fire extinguishing delivered from the foam aqueous solution generator is compared with the target liquid feed pressure value registered according to the protection zone, and the liquid feed pressure measurement value is the target liquid feed pressure value. Feedback control of the pressurized water supply device so that
  Control the foam fire-extinguishing agent liquid feeding means so as to achieve a target mixing ratio according to the flow rate measurement value before the foam fire-extinguishing agent is pumped from the pressurized water supply device,
  Among foam extinguishing devices with different flow rates that require a foam aqueous solution for fire extinguishing, of at least two or more protective compartments provided with different types of foam extinguishing devices among air foam chambers, foam monitoring nozzles, foam hydrants, and fixed foam heads Fire extinguishing foam aqueous solution with a flow rate and mixing ratio required by the active foam extinguishing device can be generated and sent out only to the selected protective compartment.
  A method for controlling a foam aqueous solution generator, characterized in that:

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