JP6151818B2 - 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. 4, 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 is mixed with a foam extinguishing chemical pumped from the foam stock solution tank 3 by the pressure at a predetermined ratio in the mixer 4 to produce a fire-fighting 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 The valve 10, 20, 30, 40 that is connected to the section selection valve or the fire hydrant valve is opened, the foam water solution for fire extinguishing is supplied to the foam fire extinguisher in the selected protective section, A fire extinguishing foam is generated by mixing outside air with a fire extinguishing foam aqueous 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. At that pressure, the closing mechanism inside the air foam chamber is opened, and foaming is performed here, and the liquid level of the oil tank T1 is covered with fire-extinguishing foam to suffocate.

  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. Although the pressure of the fire-fighting foam aqueous solution required differs, considering the pressure loss due to the pipe diameter and length, etc., a piping system is provided so that the required pressure can be obtained for each protection section. Pressure control valves 10, 20, 30, and 40 are provided to obtain a necessary pressure for each of the foam extinguishing devices so as to obtain a predetermined extinguishing foam aqueous solution flow rate.

  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 fire-extinguishing agent 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 adjusted. 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

  A first problem of the present invention is to appropriately control the water supply flow rate for fire extinguishing of a pressurized water supply apparatus in accordance with the foam fire extinguishing apparatus of a protective section to be extinguished.

  That is, the conventional pressure water supply device of the foam fire extinguisher is only activated by the fire pump control panel and stopped by the panel operation of the fire extinguishing pump control panel. Only water was going. This is because a foam fire extinguisher that requires a large flow rate of fire extinguishing water (for example, a foam monitor nozzle of about 2000 liters per minute) is activated, but only a small flow rate of fire extinguishing water is required. Even when activated (for example, there are 100 liters per minute for foam hydrants and 50 liters per minute for fixed foam heads), the operation of the pressurized watering device is constant. In addition, depending on the protection zone to be extinguished, since a plurality of these fire extinguishing devices are arranged, the required flow rate difference further widens and becomes a large difference. For this reason, when a small amount of water for fire extinguishing is required, excessive pressure is applied to the piping, etc., or when the pressure rises suddenly, the piping is impacted, causing a phenomenon called water hammer There was a possibility.

  In addition, although the pressurized water supply apparatus described in patent document 1 and 2 has shown that a flow rate can be controlled by inverter control, it describes about the foam fire-extinguishing agent mixing system which controls the mixing ratio of water for fire-extinguishing and a foam fire-extinguishing agent exclusively. I'm just doing it.

  The second problem of the present invention is to obtain a foam fire-extinguishing equipment that can stably generate a fire-fighting foam aqueous solution having a predetermined mixing ratio with respect to a flow rate that varies greatly depending on the foam fire-extinguishing apparatus that operates. . That is, the conventional foam fire extinguishing equipment is provided with a secondary pressure control valve on the secondary side of the foam aqueous solution generation device so as to obtain the necessary pressure for each type of foam fire extinguishing device, but for fire extinguishing that passes there. Since the flow rate of the foam aqueous solution varies greatly depending on the type and quantity of the foam fire extinguisher that operates, the total flow rate of fire extinguishing water in the entire foam fire extinguishing device is not constant. For example, the types of foam fire extinguishing devices range from about 50 liters per minute for a fixed foam head to about 2000 liters per minute for a foam monitor nozzle, as described above, with a difference of two orders of magnitude.

  Therefore, since the flow rate of fire-extinguishing water passing through a conventional mixer (using the Venturi effect, etc.) also varies depending on the foam-extinguishing device that operates, a predetermined ratio of foam-extinguishing agent to a predetermined fire-extinguishing water is a predetermined ratio. It is difficult to keep the mixing ratio constant in a mixer that mixes in For example, in a mixer using a general Venturi effect, the flow rate range used 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, 400 to 1800 liters per minute. Many models, 700-3150 liters and 1900-8550 liters per minute, are prepared according to the range of flow used, but these were used properly.

  In addition, mixers with a particularly wide working flow rate range are available with models of 80-2000 liters per minute and 200-5000 liters per minute, but they are very expensive and depending on the fire extinguishing equipment, It is not always possible to respond within the range.

  If the flow rate range is too large to achieve the specified mixing ratio, it may be necessary to provide multiple mixers with different flow ranges depending on the foam extinguishing device for each protection zone. Construction was difficult.

  The third problem of the present invention is to stably obtain a foam aqueous solution having a predetermined mixing ratio even in the case where a high extinction rate foam extinguishing agent is used in a situation where the flow rate range is large as described above. It is in. In other words, 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 emerged, so that the foam stock solution tank can be expected to be downsized. became. However, it is difficult to mix at a high dilution rate with high accuracy in the conventional apparatus, and it is further difficult in the situation where there is a large working flow rate range as described above.

(1) The control device for the foam aqueous solution generator according to the present invention uses one foam extinguishing chemical liquid feeding means to put the foam extinguishing chemical stored in the foam stock solution tank into the fire extinguishing water pumped by one water feeding means. A control device for a foam aqueous solution generation device that generates a foam aqueous solution for fire extinguishing by pumping to a mixing point and mixing at a predetermined ratio, and is a pipe that branches from one outlet of the foam aqueous solution generation device and reaches a protection section Data for specifying normally-closed opening / closing means interposed in each of the above, water supply means operation data corresponding to the flow rate to be sent by the water supply means, and foam extinguishment corresponding to the flow rate to be sent by the foam extinguishing agent liquid delivery means The medicine liquid feeding means operation data is provided with a storage means registered in advance according to the protection section.

  Furthermore, the control device for the foam aqueous solution generation device according to the present invention includes a fire detection means or a selection means for selecting a protection zone to be extinguished based on a manual operation.

  Furthermore, the control device for the foam aqueous solution generation device according to the present invention comprises, in the event of a fire, data specifying the opening / closing means corresponding to the protection section selected by the selection means from the storage means, water supply means operation data, and foam extinguishing chemical delivery. The liquid means operation data is read from the storage means, the water supply means is determined based on the read water supply means operation data, and the foam fire extinguishing chemical liquid supply means is determined based on the read foam extinguishing chemical liquid supply means operation data. Of the foam aqueous solution feeding pipe intervening between the corresponding protection section based on the read-out information of the opening and closing means. Control means for controlling the opening and closing means to be opened.

  And the control apparatus of the foam aqueous solution production | generation apparatus which concerns on this invention is a foam fire extinguisher from which the flow volume which requires the foam aqueous solution for fire extinguishing is different, among an air foam chamber, a foam monitor nozzle, a foam fire hydrant, and a fixed foam head. The above-mentioned protective compartment selected by generating a foam aqueous solution for fire extinguishing with a flow rate and a mixing ratio required by the foam extinguishing device to be operated, regardless of which of the at least two protective compartments provided with the foam fire-extinguishing device. It can be sent only to

(2) Moreover, the control method of the foam aqueous solution production | generation apparatus which concerns on this invention is 1 with one foam fire-extinguishing chemical | medical agent liquid delivery means to the fire-extinguishing water pumped by one water-feeding means, and the foam fire-extinguishing chemical | medical agent stored in the foam stock solution tank. 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 mixing at a predetermined ratio, selecting a protective zone to be extinguished in the event of a fire, and selecting the selected protective zone Only the pipes leading to the water are controlled to open, the water supply means is controlled based on the water supply means operation data corresponding to the selected protection section, and the foam fire extinguishing based on the extinguishing chemical liquid supply means corresponding to the selected protection section Different types of foam fire extinguishing devices were provided among air foam chambers, foam monitoring nozzles, foam fire hydrants, and fixed foam heads, which controlled the drug delivery means and required different flow rates for the foam aqueous solution for fire extinguishing. At least 2 Whatever fire extinguishing is done in any of the above protective compartments, it is possible to produce a fire-fighting foam aqueous solution with the flow rate and mixing ratio required by the activated foam extinguishing device and deliver it only to the selected protective compartment. is there.

  According to the configuration of (1) the control device for the foam aqueous solution generator according to the present invention and the control method for the foam aqueous solution generator according to the present invention corresponds to the protective zone to be extinguished according to the method (2). A fire-fighting foam aqueous solution having a flow rate and a mixing ratio corresponding to only the piping can be sent stably. As a result, the piping is not exposed to excessively high pressure, and phenomena such as creep and water hammer can be suppressed, so the burden on the piping and the like can be reduced. It can be replaced with an inexpensive open valve having no function.

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 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.

  Each of the foam extinguishing devices is connected to a pipe which is a foam aqueous solution feeding pipe, and the pipe is a second selection valve 11, 12, 21, 22, 41, which is provided in the immediate vicinity of each protection section. 42 and the secondary side of the fire hydrant valves 31, 32.

  The primary side of the section selection valve is connected to the secondary side of the first valves 100, 200, 300, and 400 through a piping that is a foam aqueous solution feeding pipe by collecting a plurality of protection sections. The primary sides of the release valves 100, 200, 300, and 400 are combined into a pipe that is a single foam aqueous solution feed pipe and connected to the secondary side of the foam aqueous solution generator 70.

  And the primary side of the said foam aqueous solution production | generation apparatus 70 is connected to the fire prevention water tank 2 by the piping for fire-extinguishing water through the pressurized water supply apparatus 5 which pumps 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 said pressurized water supply apparatus 5 and it supplies water to the said foam aqueous solution production | generation apparatus 70 by operating.

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 controls the pressurized water feeding device 5 by inverter, and a foam fire extinguishing system that is provided in the foam aqueous solution generating device 70 and that controls the foam fire extinguishing chemical liquid feeding pump 7 described later. A chemical liquid feed pump control panel 61 and a foam fire extinguishing equipment control panel 91 for controlling the entire foam fire extinguishing equipment are provided.

  The foam fire extinguishing equipment control panel 91 includes a signal output unit 905, a display / operation unit 906, a storage unit 907, and a control unit 909.

  The signal output unit 905, the display / operation unit 906, and the storage unit 907 are electrically connected to and controlled by the control unit 909, respectively.

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

  The storage unit 907 includes an opening valve and a section selection valve that are opened in the event of a fire, operation data corresponding to a flow rate to be sent out by the pressurized water supply device 5, and a flow rate to be sent out from the foam fire-extinguishing chemical liquid feeding pump. Is stored in advance and the control program for the foam fire extinguishing equipment control panel.

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

<Bubble aqueous solution generator>
The foam aqueous solution generator 70 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. And a check valve 86 provided so that the water for fire extinguishing is not mixed, and the primary side is connected to the pressurized water supply device 5 and the secondary side is connected to the release valves 100, 200, 300, 400, respectively. In the secondary pipe 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 feed pump 7 are respectively sent at a predetermined flow rate. Mix to produce a foam aqueous solution for fire fighting with a predetermined concentration.

<Bubble fire extinguishing equipment control panel>
The said control part 909 is electrically connected with the fire-extinguishing pump control panel 60 and the foam fire-extinguishing chemical | medical-solution delivery pump control panel 61, sends an operation command with respect to each, and gives the operation data of each pump.

  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 data stored in the storage unit 907 in advance according to the selected section, and instructs the fire extinguishing pump control panel 60 and the foam extinguishing agent liquid feed pump control panel 61 to operate. The operation data corresponding to the flow rate to be sent is sent, and the opening valve and the section selection valve to be opened are controlled to open via the signal output unit 905.

  The storage unit 907 stores a control program for the foam fire extinguishing equipment control panel 91 and registers in advance an opening valve and a section selection valve that are linked in accordance with the foam fire extinguishing apparatus to be operated. In addition, the display / operation unit 906 displays the operation status of the foam fire extinguishing equipment by using a 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 apparatus 5 based on the operation command from the control unit 909 of the foam fire-extinguishing equipment control panel 91 and the operation data. That is, the fire extinguishing pump control panel 60 and the pressurized water supply device 5 have a function of controlling the water supply flow rate of fire extinguishing water. Accordingly, fire extinguishing water is sent to the foam aqueous solution generator 70 at a predetermined flow rate in accordance with a command from the foam fire extinguishing equipment control panel 91.

<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 from the control unit 909 of the foam fire extinguishing equipment control panel 91 and the operation data. 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. Accordingly, the foam fire extinguishing agent is delivered at a predetermined flow rate in accordance with the command of the foam fire extinguishing equipment control panel 91.

<Open valve and compartment selection valve>
The foam aqueous solution delivered from the foam aqueous solution generation device 70 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. The fire extinguishing device controls and sends out a necessary and sufficient flow rate of the fire extinguishing foam aqueous solution, and the foam extinguishing device is controlled so as to be within a predetermined pressure range, so a conventional secondary pressure control valve is provided. There is no need, and it can be an inexpensive release valve that is simply opened by remote control.

<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. Requires different flow rates and pressures for the fire-fighting foam solution. These foam fire extinguishing devices mix external air with the supplied fire-fighting foam aqueous solution to produce 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 91, 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 907, 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 set in a predetermined manner. It operates so as to deliver a predetermined flow rate by operating with a load, and the fire extinguishing water and the foam extinguishing agent are mixed at a predetermined ratio (for example, 3% or 1) according to a predetermined dilution rate determined by the foam extinguishing agent to be used. %) Is mixed, and the fire-extinguishing foam aqueous solution is pumped to the foam-extinguishing apparatus that performs fire-extinguishing through the opened open valve and the partition 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 the oil tank T1 for convenience of explanation, the operator operates the display / operation unit 906 of the foam fire extinguishing equipment control panel 91 to protect the protective section to which the oil tank T1 belongs. Specify to start fire extinguishing.

  The foam fire extinguishing equipment control panel 91 receives a signal from the display / operation unit 906 by the control unit 909, reads data registered in advance for a designated protective zone from the storage unit 907, 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 gives an operation command and operation data to the fire extinguishing pump control panel 60 and the foam extinguishing chemical liquid feeding pump control panel 61 according to the operating data, and the pressurized water feeding device 5 and the foam fire extinguishing chemical liquid feeding. The pump 7 is operated at a predetermined load and is operated so as to deliver a predetermined flow rate, and the foam aqueous solution generator 70 uses a fire extinguishing water and a foam fire extinguishing agent to use a predetermined dilution rate determined by a foam extinguishing agent. Depending on the situation, a fire-fighting foam aqueous solution mixed at a predetermined ratio (for example, 3% or 1%) is generated.

  The foam aqueous solution for fire extinguishing with a predetermined flow rate and concentration generated by the foam aqueous solution generation device 70 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 external air into the fire-extinguishing foam aqueous solution to generate fire-extinguishing foam, which is sent to the oil tank T1 to cover the liquid surface 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 configuration in the present embodiment is different from the configuration in the first embodiment in that the release valves 100, 200, 300, and 400 are replaced with the secondary pressure control valves 10, 20, 30, and 40, and the fire fighting equipment control panel. 91 and the control part 909 of the component are the fire extinguishing equipment control panel 92 and the control part 910, respectively. These are replaced in the configuration of the first embodiment, and the connection relationship with other devices and piping is not changed.

  That is, in the fluid system configuration of the foam fire extinguishing equipment according to the present embodiment, the primary sides of the partition selection valves 11, 12, 21, 22, 41, 42 and the fire hydrant valves 31, 32 are combined into a plurality of protective sections. The secondary pressure control valves 10, 20, 30, and 40 are connected to the secondary side of the secondary pressure control valve 10 through a pipe that is a foam aqueous solution feed pipe, and the primary side of the secondary pressure control valve is one foam aqueous solution feed pipe Are connected to the secondary side of the foam aqueous solution generator 70.

  The foam fire extinguishing equipment control panel 92 includes a signal output unit 905, a display / operation unit 906, a storage unit 907, and a control unit 910.

  The signal output unit 905, the display / operation unit 906, and the storage unit 907 are electrically connected to the control unit 910 and controlled by the control unit 910.

  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 foam fire extinguishing equipment control panel 92 includes a signal output unit 905, a display / operation unit 906, a storage unit 907, and a control unit 910.

  The control unit 910 is electrically connected to the fire-extinguishing pump control panel 60 and the foam fire-extinguishing chemical liquid feeding pump 61, and sends an operation command to each of them and gives operation data.

  The section to be extinguished is selected by operating the display / operation unit 906. 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 the selected protective compartments.

  The control unit 910 reads the data stored in advance in the storage unit 907 according to the selected section, instructs the fire extinguishing pump control panel 60 and the foam fire extinguishing chemical liquid feed pump control panel 61, and Operation data corresponding to the total flow rate to be sent is sent, and the secondary pressure control valve and the partition selection valve to be opened are controlled to be opened via the signal output unit 905.

  The storage unit 907 stores a control program for the foam fire extinguishing equipment control panel 92 and registers in advance a secondary pressure control valve and a partition selection valve that are linked in accordance with the foam fire extinguishing apparatus to be operated. In addition, the display / operation unit 906 displays the operation status of the foam fire extinguishing equipment by using a provided display device so that the operator can grasp the operation status.

<Secondary pressure control valve>
The foam aqueous solution delivered from the foam aqueous solution generation device 70 is sent to the secondary pressure control valves 10, 20, 30 and 40 on the secondary side. The secondary pressure control valves 10, 20, 30, and 40 are normally closed, and are opened by a command from the signal output unit 905 of the foam extinguishing equipment control panel 92 at the time of a fire. Further, the secondary pressure control valve depressurizes the fire-extinguishing foam aqueous solution applied to the primary side to a predetermined pressure set in advance, sends it to the secondary side, and supplies it to the foam fire-extinguishing device.

<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 92, selects a protection zone to which a protection target to be extinguished belongs, and commands 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 910 reads data corresponding to the selected protection section from the storage unit 907, and outputs a predetermined secondary pressure control valve via the signal output unit 905. Then, the section selection valve is selected and opened, operation is instructed to the fire extinguishing pump control panel 60 and the foam fire extinguishing chemical liquid feed pump control board 61, and operation data is given, and the pressurized water feeding device 5 and the foam fire extinguishing chemical liquid feeding pump 7 are provided. Is operated at a predetermined load to send a sum of a predetermined flow rate, and the water for extinguishing water and the foam extinguishing agent are mixed at a predetermined ratio (in accordance with a predetermined dilution rate determined by the foam extinguishing agent to be used) For example, 3% or 1%) of a foam aqueous solution for fire extinguishing is generated, and the foam aqueous solution for fire extinguishing is supplied to the foam fire extinguisher that performs fire extinguishing via the opened secondary pressure control valve and the partition selection valve. Pump.

  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, when the fire extinguishing section is defined as the oil tank T1 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 to operate the oil tank. A plurality of protection zones to which T1 and the bubble monitor nozzle N1 belong are specified and a fire extinguishing start command is issued.

  The foam fire extinguishing equipment control panel 92 receives a signal from the display / operation unit 906 by the control unit 910, reads data registered in advance for the designated protection zone from the storage unit 907, 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 and 21 via the signal output unit 905, and these are opened.

  Further, the control unit 910 gives an operation command and operation data to the fire extinguishing pump control panel 60 and the foam extinguishing chemical liquid feed pump control panel 61 according to the data, and the pressurized water feeding device 5 and the foam fire extinguishing chemical liquid feeding pump. 7 is operated at a predetermined load so as to send out a sum of a predetermined flow rate, and the foam aqueous solution generator 70 uses a fire extinguishing water and a foam extinguishing agent to use a predetermined dilution determined by a foam extinguishing agent. A fire-fighting foam aqueous solution mixed at a predetermined ratio (for example, 3% or 1%) according to the rate is generated.

  The fire-fighting foam aqueous solution having a predetermined flow rate and concentration generated by the foam aqueous solution generation device 70 passes through the secondary pressure control valves 10 and 20 and the partition selection valves 11 and 21 to the oil tank T1 and the foam monitor nozzle N1. 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 foam chamber C and the foam monitor nozzle N1 are mixed with the outside air in a fire extinguishing foam aqueous solution and foamed to produce a fire extinguishing foam. The fuel is sent to the tank T1 and the foam monitor nozzle N1, and the liquid level of the oil tank T1 and the fire point where the foam monitor nozzle is aimed are covered with extinguishing suffocation.

  Thus, the foam fire extinguishing equipment of the present embodiment sends out fire extinguishing water at a predetermined flow rate according to the inverter control by the inverter control, and the foam extinguishing chemical at a predetermined flow rate is supplied to the fire extinguishing water. In addition to sending and mixing by inverter control, a secondary pressure control valve is provided on the secondary side of the foam aqueous solution generation device 70 to enable simultaneous operation of a plurality of foam fire extinguishing devices.

[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.

  The configuration of the present embodiment is different from the configuration of the first embodiment in that a fire detection device D, a fire receiving panel R, and a local operation panel L are newly provided, and the foam fire extinguishing equipment control panel in the first embodiment. Instead of 91, a foam fire extinguishing equipment control panel 96 is provided. The foam fire extinguishing equipment control panel 96 includes a control section 911 and a storage section 908, respectively, instead of the control section 909 and the storage section 907 of the foam fire extinguishing equipment control panel 91 in the first embodiment, and a new signal input section 904. Is provided.

  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.

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

<Fire detection device>
One or more fire detection devices D are provided for each protection section to be automatically extinguished so as to monitor the inside of the protection section. When a fire is detected, the fire detection device D is connected to the electrically connected fire receiving panel R. Send fire signals for each protected area.

<Fire reception board>
The fire receiving board R is electrically connected to the fire detection device D provided for each protection section and the signal input unit 904 of the foam fire extinguishing equipment control board 96, respectively. When a fire signal is received from the fire detection device D, a fire occurrence signal is sent to the fire extinguishing equipment control panel 96 together with information on the protection section.

<Local operation panel>
The local operation panel L is electrically connected to the signal input unit 904 of the foam fire extinguishing equipment control panel 96, and one or more local operation panels L are provided at a position where the protective section can be visually observed. In the event of a fire, the operator near the fire site operates the surface of the local operation panel L, sends a signal to the electrically connected foam fire extinguishing equipment control panel 96, and the protective zone that the local operation panel L is responsible for. The fire extinguishing device is remotely controlled to extinguish the fire.

  Although not shown in the figure, the operation status of the foam fire extinguishing equipment is received via the signal output unit 905 of the foam fire extinguishing equipment control panel 96 and displayed on the panel so that the operator can grasp the situation. good.

  In addition, when performing fire extinguishing by manual operation, if the operator of the foam fire extinguishing equipment control panel 96 and the operator of the local operation panel L may operate at the same time, it may cause confusion. The function to provide and operate is provided in the foam fire extinguishing equipment control panel 96. Specifically, operation switches that require an operation authority to be operated prior to manual operation are provided on the surface of the local operation panel L and the surface of the foam fire extinguishing equipment control panel 96, and are operated by the operation. It is controlled by the control unit 911 of the foam fire extinguishing equipment control panel 96 so as to grant the authority of. As for the method of granting the manual operation authority, exclusive control on a first-come-first-served basis, central priority given priority to the operation of the foam fire extinguishing equipment control panel 96, local priority given priority to the operation of the local control panel L, and subsequent priority (ie substantially If there is no priority, the exclusive control will be selected according to the management situation at the site where the foam fire extinguishing equipment is installed.

<Bubble fire extinguishing equipment control panel>
The foam fire extinguishing equipment control panel 96 includes a signal input unit 904, a signal output unit 905, a display / operation unit 906, a storage unit 908, and a control unit 911.

  The said control part 911 is electrically connected with the fire-extinguishing pump control panel 60 and the foam fire-extinguishing chemical | medical agent liquid supply pump 61, sends an operation command with respect to each, and gives operation data.

  In addition to the operation of the display / operation unit 906 by the operator, the signal input unit 904 receives a fire signal including information on a protection zone where a fire has occurred from the fire receiving panel R. This is done by the operator operating the panel in the local control panel L, and extinguishing the selected protective zone.

  At this time, simultaneous selection of a plurality of sections is not accepted. The control unit 911 reads data stored in advance in the storage unit 908 according to the selected section, instructs the fire pump control panel 60 and the foam fire-extinguishing chemical liquid feed pump control panel 61, and The operation load data corresponding to the flow rate to be sent is sent, and the release valve and the section selection valve to be opened are controlled to be opened via the signal output unit 905.

  In addition, the storage unit 908 controls the fire extinguishing automatically in conjunction with the fire signal, the remote operation control from the local operation panel L, and the manual operation in the local operation panel L and the foam fire extinguishing equipment control panel 96. The control program of the foam fire extinguishing equipment control panel 96 including the control of authority is stored, and the display / operation unit 906 displays the operating status of the foam fire extinguishing equipment by the provided display device, and the operator displays the operating status. To be able to grasp.

<Description of operation>
In addition to the operation described in the first embodiment, the signal input unit 904 of the foam fire extinguishing equipment control panel 96 receives a remote control signal manually operated from the local operation panel L provided at a distance where a predetermined protective section can be visually observed. Then, the foam fire extinguishing device in the protection section is activated to extinguish the fire. In addition, by issuing a fire detection device D that monitors a predetermined protective zone, the fire input signal from the fire detection device D is sent to the signal input unit 904 of the foam fire extinguishing equipment control panel 96 via the fire receiving panel R. When received, the fire extinguishing device in the protection zone is automatically activated to extinguish the fire.

  In addition, although not shown in figure, the structure which provides the fire detection apparatus D, the fire receiving panel R, and the local operation panel L in Embodiment 2 is also possible. In this case, the number of protective compartments to be extinguished as in the first embodiment is not limited, and a plurality of protective compartments can be extinguished simultaneously as in the second embodiment.

DESCRIPTION OF SYMBOLS 1, 5 ... Pressurized water supply apparatus, 2 ... Water tank, 3, 30 ... Foam stock solution tank, 4 ... Mixer, 6, 60 ... Fire extinguishing pump control panel, 61 ... Foam extinguishing chemical liquid feeding pump control panel, 7 ... Foam extinguishing Drug feeding pump, 70 ... foam aqueous solution generator, 904 ... signal input unit, 905 ... signal output unit, 906 ... display / operation unit, 907, 908 ... storage unit, 9, 91, 92, 96 ... foam extinguishing equipment control Panel, 909, 910, 911 ... Control unit, 80, 81, 82, 83, 84, 85 ... Gate valve, 11, 12, 21, 22, 41, 42 ... Section selection valve, 10, 20, 30, 40 ... Secondary pressure control valve, 100, 200, 300, 400 ... Open valve, 31, 32 ... Fire hydrant valve, 86 ... Check valve, T1, T2 ... Oil tank, C ... Foam make chamber, N1, N2 ... Foam monitor nozzle , M1, M2 ... foam hydrant, H1, H2 ... fixed foam L, local operation panel, D ... fire detection device, R ... fire receiving panel

Claims (2)

The fire extinguishing water stored in the foam stock solution tank is pumped to one mixing point by one foam extinguishing chemical liquid feeding means and mixed at a predetermined ratio to the fire extinguishing water pumped by one water feeding means. A control device for a foam aqueous solution generator for generating an aqueous solution,
Data for specifying normally closed opening and closing means that are branched from one outlet portion of the foam aqueous solution generation device and that are interposed in each of the pipes that reach the protection section, and water supply means operation data that corresponds to the flow rate that the water supply means should send out And storage means in which foam extinguishing agent liquid feeding means operation data corresponding to the flow rate to be sent by the foam extinguishing chemical liquid feeding means is registered in advance according to the protection zone,
A selection means for selecting a fire detection means or a protective zone to be extinguished based on manual operation;
In the event of a fire, the data for specifying the opening / closing means corresponding to the protection zone selected by the selection means, the water supply means operation data, and the foam fire-extinguishing chemical liquid supply means operation data are read from the storage means and read the water supply. Based on the means operation data, the water supply means is operated, and on the basis of the read-out foam extinguishing agent liquid supply means operation data, the foam extinguishing agent liquid supply means is operated at a predetermined load, respectively, and a predetermined flow rate of the extinguishing water and the foam extinguishing And a control means for controlling to open the opening and closing means of the foam aqueous solution feed pipe interposed between the protective section based on the information of the read opening and closing means and controlling to deliver the medicine,
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, it is possible to generate a foam aqueous solution for fire extinguishing with a flow rate and a mixing ratio required by the foam extinguishing device to be operated, and send it only to the selected protection section. apparatus. The fire extinguishing water stored in the foam stock solution tank is pumped to one mixing point by one foam extinguishing chemical liquid feeding means and mixed at a predetermined ratio to the fire extinguishing water pumped by one water feeding means. A method for controlling a foam aqueous solution generator for generating an aqueous solution,
In the event of a fire, select a protection zone to be extinguished, open only the piping to the selected protection zone, and control the water supply means based on the water supply means operation data corresponding to the selected protection zone. Controlling the foam fire-fighting chemical liquid delivery means based on the fire-extinguishing chemical liquid delivery means operation data according to the protection zone,
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 foam aqueous solution generator control method is characterized in that, regardless of which fire extinguishing method is used, a foam aqueous solution for fire extinguishing with a flow rate and a mixing ratio required by the activated foam fire extinguisher can be generated and sent only to the selected protective compartment. .

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