JP6792275B2 - Refueling system, pump system and systems including these - Google Patents

Description

The present invention relates to a fire extinguishing system suitable for a large-scale fire such as a tank fire in an oil complex, or injection of cooling water into a nuclear reactor in a nuclear power plant.

Japanese Patent No. 5695790 discloses a large-capacity water supply system that continuously supplies a large amount of water without interruption. This large-capacity water supply system includes a large-capacity water supply vehicle, a fuel storage tank, and an automatic supply pump mechanism. The large-capacity water supply vehicle receives automatic fuel supply from the fuel storage tank via the automatic supply pump mechanism. As a result, the large-capacity water supply vehicle can continuously supply a large amount of water without interruption.

Japanese Patent No. 5695790

<Signal cable>
The conventional large-capacity water supply system controls the automatic supply pump mechanism on and off based on the fuel level signal transmitted from the large-capacity water supply vehicle. In such a control method, it is necessary to electrically connect the large-capacity water supply vehicle and the automatic supply pump mechanism by a signal cable for transmitting and receiving a fuel level signal. Signal cables are routed above the ground near the fire site and are at risk of exposure to fire, water and high temperatures. Therefore, the conventional large-capacity water supply system is highly likely to cause a failure such as breakage, disconnection, or ground fault of the signal cable.

<Application to multiple large-capacity water supply vehicles>
The conventional large-capacity water supply system has a configuration in which a large-capacity water supply vehicle and an automatic supply pump mechanism correspond 1: 1. That is, the conventional large-capacity water supply system cannot automatically supply fuel to a plurality of large-capacity water supply vehicles. If the conventional large-capacity water supply system is applied to a plurality of large-capacity water supply vehicles, a plurality of automatic supply pump mechanisms corresponding to each large-capacity water supply system are required. Further, in the conventional large-capacity water supply system, it is necessary to connect the large-capacity water supply vehicle and the automatic supply pump mechanism 1: 1 by a signal cable and an oil supply hose. Therefore, if the signal cable and the oil supply hose are incorrectly connected between the plurality of large-capacity water supply vehicles and the plurality of automatic supply pump mechanisms, the automatic fuel supply cannot be performed correctly.

<Foam water discharge>
The conventional large-capacity water supply system has a configuration in which a large amount of water is continuously supplied without interruption. However, even if a large amount of water is continuously discharged without interruption, it is not possible to efficiently extinguish a large-scale fire such as a tank fire in an oil complex in a short time. In order to extinguish a large-scale fire, it is effective to discharge foam with a mixture of fire extinguishing water and fire extinguishing stock solution (foam fire extinguishing agent). The conventional large-capacity water supply system can continuously supply fire extinguishing water without interruption, but cannot continuously supply fire extinguishing stock solution without interruption. That is, it is not possible to realize continuous foam discharge over a long period of time by the conventional large-capacity water supply system.

<Purpose of the invention>
An object of the present invention is to provide a fire extinguishing system that realizes the following matters.
・ Automatically supply liquid to fire extinguishing equipment in operation without monitoring the status of fire extinguishing equipment ・ Automatically supply liquid to multiple fire extinguishing equipment in operation by an extremely simple control method ・ For a long time To enable continuous foam discharge

(1) In order to achieve the above object, the fire extinguishing system of the present invention includes at least one replenishment unit and at least one fire extinguishing facility connected to the replenishment unit via a hose, and operates from the replenishment unit. It is a fire extinguishing system for automatically supplying a liquid to the fire extinguishing equipment inside, and the replenishment unit sucks the liquid from a replenishment tank in which the liquid for replenishing the fire extinguishing equipment is stored and the replenishment tank. A pump for discharging, a first pipeline through which the liquid discharged from the pump flows, a first valve provided in the first pipeline, and the first valve in the first pipeline. A pressure sensor that detects the pressure on the next side, a first control unit that opens and closes the first valve based on the detection result of the pressure sensor, and the liquid that has passed through the first pipeline are supplied and said. The fire extinguishing equipment includes at least one first connecting portion to which one end of the hose is connected, and the fire extinguishing equipment includes a second connecting portion to which the other end of the hose is connected and the liquid passing through the second connecting portion. A flowing second pipeline, a second valve provided in the second pipeline, a replenished tank in which the liquid that has passed through the second pipeline is stored, and the liquid stored in the replenished tank. A state in which the second valve of at least one of the fire extinguishing facilities is open, including a level sensor for detecting the level of the above and a second control unit for opening and closing the second valve based on the detection result of the level sensor. At this time, the pressure on the secondary side of the first valve in the first pipeline is configured to be lower than the preset pressure, and the first control unit is the first in the first pipeline. When the pressure on the secondary side of one valve becomes lower than the preset pressure, the pump is driven and the control for opening the first valve is executed, and the first valve in the first pipeline is executed. When the pressure on the secondary side of the above becomes higher than the preset pressure, the pump is stopped and the control for closing the first valve is executed, and the second control unit is sent to the replenished tank. When the stored liquid becomes lower than a preset level, the control to open the second valve is executed, and the liquid stored in the replenished tank becomes higher than the preset level. At that time, the control for closing the second valve is executed.

(2) Preferably, in the fire extinguishing system of (1) above, the liquid is the fuel and the replenishment unit is the refueling system.

(3) Preferably, in the fire extinguishing system of the above (1), the liquid is a fire extinguishing stock solution and the replenishment unit is a fire extinguishing stock solution replenishment system.

(4) Preferably, in the fire extinguishing system of (2) or (3), at least two of the replenishment units are included, one of the replenishment units is a refueling system, and the other replenishment unit is a fire extinguishing stock solution replenishment system. The fuel replenishment system automatically supplies the fuel as the liquid to the fire extinguishing stock solution replenishment system, and the fire extinguishing stock solution replenishment system automatically supplies the fire extinguishing stock solution as the liquid to the fire extinguishing equipment in operation. And.

(5) Preferably, in the fire extinguishing system of the above (2), the fire extinguishing equipment includes a pump system for sucking and discharging fire extinguishing water, and the refueling system supplies fuel as the liquid to the pump system. It is configured to be automatically supplied.

(6) Preferably, in the fire extinguishing system of (2) above, the fire extinguishing equipment includes a mixing system for mixing fire extinguishing water and a fire extinguishing stock solution, and the refueling system is added to the mixing system as the liquid. The configuration is such that fuel is automatically supplied.

(7) Preferably, in the fire extinguishing system of the above (6), the fire extinguishing stock solution replenishment system as the other replenishment unit is included, and the fire extinguishing stock solution replenishment system automatically supplies the fire extinguishing stock solution as the liquid to the mixing system. It is configured.

(8) Preferably, in the fire extinguishing system of the above (6) or (7), the fire extinguishing equipment includes a pump system for sucking and discharging the fire extinguishing water, and the pump system causes the mixing system to extinguish the fire. It is configured to supply water.

(9) Preferably, in any of the above (6) to (8), the fire extinguishing equipment includes a water discharge system for discharging a mixed solution of the fire extinguishing water and the fire extinguishing stock solution, and the mixing. The system is configured to supply the mixed solution to the water discharge system.

The fire extinguishing system of the present invention makes it possible to automatically supply a liquid to a fire extinguishing equipment in operation without monitoring the state of the fire extinguishing equipment. Further, the fire extinguishing system of the present invention makes it possible to automatically supply a liquid to a plurality of fire extinguishing equipments in operation by an extremely simple control method. Further, the fire extinguishing system of the present invention enables continuous foam discharge over a long period of time.

FIG. 1 is a schematic view showing the entire fire extinguishing system according to the embodiment of the present invention. FIG. 2 is a circuit diagram showing the entire fire extinguishing system. FIG. 3 is a schematic view showing the first embodiment of the fire extinguishing system. FIG. 4 is a schematic view showing a second embodiment of the fire extinguishing system. FIG. 5 is a schematic view showing a third embodiment of the fire extinguishing system.

Hereinafter, the fire extinguishing system according to the embodiment of the present invention will be described with reference to the drawings.

<Overview of fire extinguishing system>
As shown in FIG. 1, the fire extinguishing system 1 of the present embodiment includes a refueling system 10, a fire extinguishing stock solution replenishment system 20, a pump system 30, a mixing system 40, and a water discharge system 50. Hereinafter, an outline of each of the systems 10 to 50 constituting the fire extinguishing system 1 will be described with reference to FIG. The solid arrow in FIG. 1 indicates the flow of the liquid. The dotted line in FIG. 1 indicates the flow of electricity or oil other than liquid, for example.

-Overview of the refueling system The refueling system 10 is a refueling unit and automatically supplies fuel to other systems 20 to 50 in operation. The fuel supplied by the refueling system 10 is, for example, a liquid fuel such as light oil or gasoline. The refueling system 10 mainly includes a fuel storage tank 11, a fuel tank 12, a drive source 13, and a pump 14.

The fuel storage tank 11 has a large capacity capable of storing an amount of fuel for operating the fire extinguishing system 1 for, for example, several days to one week. Preferably, the fuel storage tank 11 is installed in an underground space that is not affected by fire, tsunami, tornado, or the like. The refueling of the fuel storage tank 11 is performed by, for example, the tank lorry 101. Therefore, unless the road traffic is interrupted, the fuel in the fuel storage tank 11 is replenished by the tank lorry 101, and there is no fuel shortage.

The fuel tank 12 is connected to the fuel storage tank 11 and receives fuel from the fuel storage tank 11. The fuel stored in the fuel tank 12 is used to operate the drive source 13 of the pump 14. The fuel supply from the fuel storage tank 11 to the fuel tank 12 may be automatically performed by a method described later, or may be manually performed by an operator.

The drive source 13 includes, for example, an engine E, a generator G, and a motor M in the case of an electric type (see FIG. 2). The engine E consumes the fuel from the fuel tank 12 and drives the engine E to rotate the generator G. The electric power generated by the generator G is supplied to the motor M. The motor M drives the pump 14. The drive source 13 may be of a hydraulic type. The hydraulic drive source 13 includes an engine E and a hydraulic pump (not shown). The engine E rotates the hydraulic pump, which causes the hydraulic pump to generate oil for driving the pump 14. The type of engine E may be either a diesel engine or a gasoline engine, but a diesel engine suitable for driving a generator or a pump is preferable.

As the pump 14, for example, a centrifugal pump that is efficient over a wide flow rate range may be used. The pump 14 is connected to the fuel storage tank 11 and sucks and discharges the fuel stored in the fuel storage tank 11. The fuel discharged by the pump 14 is supplied to other systems 20 to 50 in operation. The operation of the pump 14 is controlled by the first control unit 16 (see FIG. 2), which will be described later. Here, the refueling system 10 of the present embodiment includes a plurality of first connection portions 15d (see FIG. 2) which are outlets for the fuel discharged by the pump 14. The other systems 20 to 50 that receive automatic fuel supply from the refueling system 10 are all connected to the first connection portion 15d. A system similar to the other systems 20 to 50 may be connected to the remaining first connection unit 15d to which the other systems 20 to 50 are not connected.

-Overview of the fire extinguishing stock solution replenishment system The fire extinguishing stock solution replenishment system 20 is a replenishment unit that automatically supplies the fire extinguishing stock solution to the mixing system 40. On the other hand, the fire extinguishing stock solution replenishment system 20 is also a fire extinguishing system in which fuel is automatically supplied from the refueling system 10. The fire extinguishing stock solution supplied by the fire extinguishing stock solution replenishment system 20 is, for example, a stock solution such as a foam fire extinguishing agent for a large-capacity foam water cannon, a protein foam fire extinguishing agent, a synthetic surfactant foam fire extinguishing agent, and a water film forming foam fire extinguishing agent. The fire extinguishing stock solution is mixed with fire extinguishing water by the mixing system 40 to become a foam fire extinguishing agent diluted to a predetermined concentration. The fire extinguishing stock solution replenishment system 20 mainly includes a fire extinguishing stock solution storage tank 21, a fuel tank 22, a drive source 23, and a pump 24.

The fire extinguishing stockpile storage tank 21 has a large capacity capable of storing an amount of fire extinguishing stockpile capable of performing fire extinguishing activity by foam discharge for several days to one week. Preferably, the fire extinguishing stock solution storage tank 21 is installed in an underground space that is not affected by fire, tsunami, tornado, or the like. The refueling of the fire extinguishing stock solution storage tank 21 is performed by, for example, the tank lorry 102. Therefore, unless the road traffic is interrupted, the fire extinguishing stock solution in the fire extinguishing stock solution storage tank 21 is replenished by the tank lorry 102, and the fire extinguishing stock solution is not insufficient.

The fuel tank (refueled tank) 22 is connected to the refueling system 10, and the fuel in the fuel storage tank 11 is automatically supplied. The fuel stored in the fuel tank 22 is used to operate the drive source 23 of the pump 24.

The drive source 23 includes, for example, an engine E, a generator G, and a motor M in the case of an electric type (see FIG. 2). The engine E consumes the fuel from the fuel tank 22 and drives the engine E to rotate the generator G. The electric power generated by the generator G is supplied to the motor M. The motor M drives the pump 24. The drive source 23 may be of a hydraulic type. The hydraulic drive source 23 includes an engine E and a hydraulic pump (not shown). The engine E rotates the hydraulic pump, which causes the hydraulic pump to generate oil for driving the pump 24. The type of engine E may be either a diesel engine or a gasoline engine, but a diesel engine suitable for driving a generator or a pump is preferable.

The pump 24 is connected to the fire extinguishing stock solution storage tank 21 and sucks and discharges the fire extinguishing stock solution stored in the fire extinguishing stock solution storage tank 21. The fire extinguishing stock solution discharged by the pump 24 is supplied to the mixing system 40 during operation. The operation of the pump 24 is controlled by the first control unit 26 (see FIG. 2), which will be described later. Here, the fire extinguishing stock solution replenishment system 20 of the present embodiment includes a plurality of first connection portions 25d (see FIG. 2) which are outlets of the fire extinguishing stock solution discharged by the pump 24. The mixing system 40 is connected to one of the plurality of first connection portions 25d. In addition, another mixing system (not shown) may be connected to the remaining first connection portion 25d to which the mixing system 40 is not connected.

-Overview of the pump system The pump system 30 is a fire extinguishing system in which fuel is automatically supplied from the refueling system 10. The pump system 30 supplies fire extinguishing water to the mixing system 40. The pump system 30 mainly includes a fuel tank 32, a water supply drive source 33, a water supply pump 34, a water intake drive source 35, and a water intake pump 36. Here, the pump system 30 may be a portable facility mounted on a vehicle (see FIGS. 3 to 5), or may be a fixed facility installed on land or a building.

The fuel tank (refueled tank) 32 is connected to the refueling system 10, and the fuel in the fuel storage tank 11 is automatically supplied. The fuel stored in the fuel tank 32 is used to operate the water supply drive source 33 and the water intake drive source 35. When the pump system 30 is a portable facility (see FIGS. 3 to 5), the fuel tank 32 may be a fuel tank for supplying fuel to the vehicle engine.

The water supply drive source 33 and the water intake drive source 35 include, for example, an engine E, a generator G, and a motor M in the case of an electric type (see FIG. 2). The engine E consumes and drives the fuel from the fuel tank 32 to rotate the generator G. The electric power generated by the generator G is supplied to the motor M. The motor M drives the water supply pump 34 or the water intake pump 36. The water supply drive source 33 and the water intake drive source 35 may be of a hydraulic type. The hydraulic water supply drive source 33 and the water intake drive source 35 include an engine E and a hydraulic pump (not shown). The engine E rotates the hydraulic pump, whereby the hydraulic pump generates the oil pressure for driving the water supply pump 34 or the intake pump 36. The type of engine E may be either a diesel engine or a gasoline engine, but a diesel engine suitable for driving a generator or a pump is preferable. Further, when the pump system 30 is a portable facility (see FIGS. 3 to 5), at least one engine E of the water supply drive source 33 or the water intake drive source 35 may be a vehicle engine. Further, the water supply drive source 33 and the water intake drive source 35 may be used as one drive source, and this one drive source may drive both the water supply pump 34 and the water intake pump 36.

The water supply pump 34 and the water intake pump 36 supply fire extinguishing water to the mixing system 40. Of these, the water intake pump 36 is configured to be able to be put into water. The water intake pump 36 is introduced into an infinite irrigation water such as the sea or a river, and sucks fire extinguishing water. The water supply pump 34 discharges the fire extinguishing water sucked by the water intake pump 36 to the mixing system 40.

-Overview of the mixing system The mixing system 40 is a fire extinguishing system in which fuel is automatically supplied from the refueling system 10. The mixing system 40 mixes the fire extinguishing stock solution and the fire extinguishing water at a predetermined ratio to produce a foam fire extinguishing agent diluted to a predetermined concentration. The mixing system 40 mainly includes a fire extinguishing stock solution tank 41, a fuel tank 42, a drive source 43, a pump 44, and a mixer 45. Here, the mixing system 40 may be a portable facility mounted on a vehicle (see FIGS. 3 to 5), or may be a fixed facility installed on land or a building.

The fire extinguishing stock solution tank 41 is connected to the fire extinguishing stock solution replenishment system 20, and the fire extinguishing stock solution in the fire extinguishing stock solution storage tank 21 is automatically supplied. The fire extinguishing stock solution stored in the fire extinguishing stock solution tank 41 is sucked into the mixer 45.

The fuel tank (refueled tank) 42 is connected to the refueling system 10, and the fuel in the fuel storage tank 11 is automatically supplied. The fuel stored in the fuel tank 42 is used to operate the drive source 43. When the mixing system 40 is a portable facility (see FIGS. 3 to 5), the fuel tank 42 may be a fuel tank for supplying fuel to the vehicle engine.

The drive source 43 includes, for example, an engine E, a generator G, and a motor M in the case of an electric type (see FIG. 2). The engine E consumes the fuel from the fuel tank 42 and drives the engine E to rotate the generator G. The electric power generated by the generator G is supplied to the motor M. The motor M drives the pump 44. The drive source 43 may be of a hydraulic type. The hydraulic drive source 43 includes an engine E and a hydraulic pump (not shown). The engine E rotates the hydraulic pump, which causes the hydraulic pump to generate oil for driving the pump 44. The type of engine E may be either a diesel engine or a gasoline engine, but a diesel engine suitable for driving a generator or a pump is preferable.

The pump 44 is connected to the pump system 30, sucks fire extinguishing water supplied from the water supply pump 34, and discharges it to the mixer 45.

The mixer 45 is connected to the fire extinguishing stock solution tank 41 and the pump 44. The mixer 45 mixes the fire extinguishing stock solution stored in the fire extinguishing stock solution tank 41 with the fire extinguishing water supplied from the pump 44 at a predetermined ratio to generate a foam fire extinguishing agent diluted to a predetermined concentration. This foam fire extinguishing agent is supplied to the water discharge system 50.

Here, the mixer 45 is composed of, for example, a vane pump and a piston pump (not shown). The inlet of the vane pump is connected to the pump 44. The vane pump is rotated by the flow of fire extinguishing water supplied from the pump 44. On the other hand, the piston pump is driven by the rotation of the vane pump. The inlet of the piston pump is connected to the fire extinguishing stock solution tank 41. The outlet of the piston pump is connected to the outlet of the vane pump. With such a configuration, the piston pump supplies a fire extinguishing stock solution in an amount corresponding to the inflow of fire extinguishing water to the outlet of the vane pump. As a result, the fire extinguishing water and the fire extinguishing stock solution are mixed in a predetermined ratio. The foam fire extinguishing agent produced by the mixer 45 is supplied to the water discharge system 50. A mixer composed of a vane pump and a piston pump is described in detail in Nippon Dry-Chemical Co., Ltd.'s Japanese Patent Application No. 2016-51216, which is one of the joint applicants. Further, the mixer 45 of the mixing system 40 may be configured to operate by feeding water from the water feeding pump 34 of the pump system 30. With such a configuration, the fuel tank 42, the drive source 43, and the pump 44 can be omitted from the mixing system 40.

-Overview of the water discharge system The water discharge system 50 is a fire extinguishing system in which fuel is automatically supplied from the refueling system 10. The water discharge system 50 discharges the foam fire extinguishing agent supplied from the mixing system 40 to the outside. The water discharge system 50 mainly includes a fuel tank 52, a drive source 53, and a water discharge pump 54. Further, the water discharge system 50 may be configured to include, for example, a foam nozzle as a foaming device for foaming the foam fire extinguishing agent. Here, the water discharge system 50 may be a portable facility mounted on a vehicle (see FIGS. 3 to 5), or may be a fixed facility installed on land or a building.

The fuel tank (refueled tank) 52 is connected to the refueling system 10, and the fuel in the fuel storage tank 11 is automatically supplied. The fuel stored in the fuel tank 52 is used to operate the drive source 53. When the water discharge system 50 is a portable facility (see FIGS. 3 to 5), the fuel tank 52 may be a fuel tank for supplying fuel to the vehicle engine.

The drive source 53 includes, for example, an engine E, a generator G, and a motor M in the case of an electric type (see FIG. 2). The engine E consumes the fuel from the fuel tank 52 and drives the engine E to rotate the generator G. The electric power generated by the generator G is supplied to the motor M. The motor M drives the water discharge pump 54. The drive source 53 may be of a hydraulic type. The hydraulic drive source 53 includes an engine E and a hydraulic pump (not shown). The engine E rotates the hydraulic pump, whereby the hydraulic pump generates oil for driving the water discharge pump 54. The type of engine E may be either a diesel engine or a gasoline engine, but a diesel engine suitable for driving a generator or a pump is preferable.

The discharge pump 54 is connected to the mixing system 40. The water discharge pump 54 sucks the foam fire extinguishing agent supplied from the mixer 45 and discharges it to the outside through a foam nozzle or the like. The water discharge system 50 may be omitted from the fire extinguishing system 1, and the foam fire extinguishing agent may be directly discharged to the outside from a foam nozzle or the like connected to the mixer 45 of the mixing system 40.

<Circuit and control of fire extinguishing system>
Next, the circuits and controls of the refueling system 10, the fire extinguishing stock solution replenishment system 20, the pump system 30, the mixing system 40, and the water discharge system 50 constituting the fire extinguishing system 1 described above will be described in detail with reference to FIG. The solid arrow in FIG. 2 indicates the flow of the liquid. The dotted line in FIG. 1 indicates the flow of non-liquid, for example, electric power, signal or hydraulic pressure.

-Circuit of the refueling system In FIG. 2, the fuel storage tank 11, the fuel tank 12, and the pump 14 included in the refueling system 10 have already been described with reference to FIG. Further, the engine E, the generator G, and the motor M included in the refueling system 10 of FIG. 2 correspond to the drive source 13 of FIG.

Both the primary side and the secondary side of the pump 14 are connected to the fuel storage tank 11 via a pipeline. A pressure control valve 14a is provided in the pipeline connected to the secondary side of the pump 14. Further, the primary side of the first pipeline 15 is connected to the pipeline connected to the secondary side of the pump 14. The secondary side of the first pipeline 15 is branched into a plurality of branches, and a first connecting portion 15d is provided at each of the branched ends via a valve. The plurality of first connection portions 15d are, for example, hose connection headers including a plurality of connection fittings.

The fuel stored in the fuel storage tank 11 is sucked into the pump 14 and flows through the first pipeline 15 to the plurality of first connection portions 15d. On the other hand, when the discharge pressure of the pump 14 exceeds a preset constant pressure, the pressure control valve 14a is opened. As a result, the fuel discharged from the pump 14 is returned to the fuel storage tank 11 again. As a result, the pressure on the primary side of the first pipeline 15 (the primary side of the first orifice 15a described below) is kept constant so that the fuel within the appropriate flow rate range is discharged to the first pipeline 15. Become.

The first pipeline 15 is provided with a first orifice 15a, a first valve 15b, and a pressure sensor 15c. The first valve 15b is located on the primary side of the first pipeline 15. The first valve 15b allows or stops the flow of fuel into the first pipeline 15. The first orifice 15a is located on the secondary side of the first valve 15b in the first pipeline 15. The first orifice 15a has a circular hole having a diameter smaller than the inner diameter of the first pipeline 15. The first orifice 15a controls the flow rate and pressure of the fuel flowing in the first pipeline 15.

The pressure sensor 15c detects the pressure on the secondary side of the first orifice 15a in the first pipeline 15 and transmits a signal. Two types of pressures P1 and P2 are set in the pressure sensor 15c of the present embodiment. The pressure P1 indicates the upper limit and the pressure P2 indicates the lower limit, and there is a relationship of P1> P2. The pressure sensor 15c transmits a signal H when it detects a pressure of pressure P1 or higher, and transmits a signal L when it detects a pressure of pressure P2 or lower.

The first control unit 16 is electrically connected to each of the level sensor 11a, the motor M of the pump 14, the first valve 15b, the pressure sensor 15c, and the plurality of timers TM. The first control unit 16 controls the pump 14 and the first valve 15b based on the signals from the level sensor 11a, the pressure sensor 15c, and the plurality of timers TM. That is, the automatic supply of fuel by the refueling system 10 is realized by the control of the first control unit 16. Hereinafter, the control of the refueling system 10 by the first control unit 16 will be described.

・ Control of refueling system (fuel supply)
The first control unit 16 immediately drives the motor M of the pump 14 based on the signal L from the pressure sensor 15c, and then immediately opens the first valve 15b. As a result, fuel supply from the fuel storage tank 11 to the plurality of first connection portions 15d is started.

Here, the refueling system 10 of the present embodiment uses one timer TM to measure a predetermined time T from the time when the signal L is received. If the secondary side of the first orifice 15a in the first pipeline 15 does not exceed the pressure P2 even after the lapse of a predetermined time T, the first control unit 16 stops the motor M of the pump 14 and issues an alarm. It is done like this. The timer TM used here is reset when a pressure exceeding the pressure P2 is detected.

On the other hand, the first control unit 16 closes the first valve 15b and stops the motor M of the pump 14 based on the signal H from the pressure sensor 15c. As a result, the fuel supply from the fuel storage tank 11 to the plurality of first connection portions 15d is stopped.

Here, the refueling system 10 of the present embodiment uses two timers TM to delay the time when the first valve 15b is closed and the time when the motor M of the pump 14 is stopped. The delay times of the two timers TM may be the same, but it is preferable that the delay time at which the motor M of the pump 14 is stopped is longer. That is, it is preferable that the motor M of the pump 14 is stopped after the first valve 15b is closed. The first control unit 16 immediately closes the first valve 15b and stops the motor M of the pump 14 when the signal H from the pressure sensor 15c is received without using the timer TM. It may be.

Further, the fuel storage tank 11 of the present embodiment is provided with a level sensor 11a. The level sensor 11a transmits a signal when the fuel in the fuel storage tank 11 falls below the set level. The first control unit 16 stops the motor M of the pump 14 based on the signal from the level sensor 11a.

-Circuit of the fire extinguishing stock solution replenishment system In FIG. 2, the fire extinguishing stock solution storage tank 21, the fuel tank 22, and the pump 24 included in the fire extinguishing stock solution replenishment system 20 have already been described with reference to FIG. Further, the engine E, the generator G and the motor M included in the fire extinguishing stock solution replenishment system 20 of FIG. 2 correspond to the drive source 23 of FIG.

Both the primary side and the secondary side of the pump 24 are connected to the fire extinguishing stock solution storage tank 21 via a pipeline. A pressure control valve 24a is provided in the pipeline connected to the secondary side of the pump 24. Further, the primary side of the first pipeline 25 is connected to the pipeline connected to the secondary side of the pump 24. The secondary side of the first pipeline 25 is branched into a plurality of branches, and a first connecting portion 25d is provided at each of the branched ends via a valve. The plurality of first connection portions 25d are, for example, hose connection headers including a plurality of connection fittings.

The fire extinguishing stock solution stored in the fire extinguishing stock solution storage tank 21 is sucked by the pump 24 and flows through the first pipeline 25 to the plurality of first connection portions 25d. On the other hand, when the discharge pressure of the pump 24 exceeds a preset constant pressure, the pressure control valve 24a is opened. As a result, the fire extinguishing stock solution discharged from the pump 24 is returned to the fire extinguishing stock solution storage tank 21 again. As a result, the pressure on the primary side of the first pipeline 25 (the primary side of the first orifice 25a described below) is kept constant.

The first pipeline 25 is provided with a first orifice 25a, a first valve 25b, and a pressure sensor 25c. The first valve 25b is located on the primary side of the first pipeline 25. The first valve 25b allows or stops the flow of the fire extinguishing stock solution into the first pipeline 25. The first orifice 25a is located on the secondary side of the first valve 25b in the first pipeline 25. The first orifice 25a has a circular hole having a diameter smaller than the inner diameter of the first pipeline 25. The first orifice 25a controls the flow rate and pressure of the fire extinguishing stock solution flowing in the first pipeline 25.

The pressure sensor 25c detects the pressure on the secondary side of the first orifice 25a in the first pipeline 25 and transmits a signal. Two types of pressures P1 and P2 are set in the pressure sensor 25c of the present embodiment. The pressure P1 indicates the upper limit and the pressure P2 indicates the lower limit, and there is a relationship of P1> P2. The pressure sensor 25c transmits a signal H when it detects a pressure of pressure P1 or higher, and transmits a signal L when it detects a pressure of pressure P2 or lower.

The first control unit 26 is electrically connected to each of the level sensor 21a, the motor M of the pump 24, the first valve 25b, the pressure sensor 25c, and the plurality of timers TM. The first control unit 26 controls the pump 24 and the first valve 25b based on the signals from the level sensor 21a, the pressure sensor 25c, and the plurality of timers TM. That is, the automatic supply of the fire extinguishing stock solution by the fire extinguishing stock solution replenishment system 20 is realized by the control of the first control unit 26. The control of the fire extinguishing stock solution replenishment system 20 by the first control unit 26 will be described later.

Here, the fuel tank 22 of the fire extinguishing stock solution replenishment system 20 is connected to the refueling system 10 described above. The refueling system 10 is provided with the plurality of first connection portions 15d described above. On the other hand, the fire extinguishing stock solution replenishment system 20 is provided with a second connection portion 27c corresponding to the first connection portion 15d. The second connection portion 27c is, for example, a hose connection header provided with a connection fitting. The first connecting portion 15d and the second connecting portion 27c are connected to each other by a hose 17. The hose 17 has a length assuming a distance between the refueling system 10 and the fire extinguishing stock solution replenishment system 20. The fuel tank 22 receives fuel from the refueling system 10 via the second connecting portion 27c.

The fuel tank 22 is connected to the second connecting portion 27c via the second pipeline 27. The second pipeline 27 is provided with a second orifice 27a and a second valve 27b. The second orifice 27a is located on the primary side of the second pipeline 27. The second orifice 27a has a circular hole having a diameter smaller than the inner diameter of the second pipeline 27. The second orifice 27a controls the flow rate and pressure of the fuel flowing in the second pipeline 27. The second valve 27b is located on the secondary side of the second orifice 27a. The second valve 27b allows or stops the flow of fuel into the second pipeline 27.

Further, the fuel tank 22 is provided with a level sensor 22a. The level sensor 22a transmits a signal when the fuel in the fuel tank 22 falls below the set level. Two types of levels X1 and X2 are set in the level sensor 22a of the present embodiment. Level X1 indicates an upper limit, level X2 indicates a lower limit, and there is a relationship of X1> X2. The level sensor 22a transmits a signal H when the fuel in the fuel tank 22 becomes level X1 or higher, and transmits a signal L when the fuel in the fuel tank 22 becomes level X2 or lower.

The second control unit 28 is connected to the level sensor 22a and the second valve 27b. The second control unit 28 controls the second valve 27b based on the signal from the level sensor 22a. The control of the second valve 27b by the second control unit 28 will be described later.

・ Control of fire extinguishing stock solution supply system 1 (supply of fire extinguishing stock solution)
The first control unit 26 immediately drives the motor M of the pump 24 based on the signal L from the pressure sensor 25c, and then immediately opens the first valve 25b. As a result, the supply of the fire extinguishing stock solution from the fire extinguishing stock solution storage tank 21 to the plurality of first connection portions 25d is started.

Here, the fire extinguishing stock solution replenishment system 20 of the present embodiment uses one timer TM to measure a predetermined time T from the time when the signal L is received. If the secondary side of the first orifice 25a in the first pipeline 25 does not exceed the pressure P2 even after the lapse of a predetermined time T, the first control unit 26 stops the motor M of the pump 24 and issues an alarm. It is done like this. The timer TM used here is reset when a pressure exceeding the pressure P2 is detected.

On the other hand, the first control unit 26 closes the first valve 25b and stops the motor M of the pump 24 based on the signal H from the pressure sensor 25c. As a result, the supply of the fire extinguishing stock solution from the fire extinguishing stock solution storage tank 21 to the plurality of first connection portions 25d is stopped.

Here, the fire extinguishing stock solution replenishment system 20 of the present embodiment uses two timers TM to delay the time when the first valve 25b is closed and the time when the motor M of the pump 24 is stopped. The delay times of the two timers TM may be the same, but it is preferable that the delay time at which the motor M of the pump 24 is stopped is longer. That is, it is preferable that the motor M of the pump 24 is stopped after the first valve 25b is closed. The first control unit 26 immediately closes the first valve 25b and stops the motor M of the pump 24 when the signal H from the pressure sensor 25c is received without using the timer TM. It may be.

Further, the fire extinguishing stock solution storage tank 21 of the present embodiment is provided with a level sensor 21a. The level sensor 21a transmits a signal when the fire extinguishing stock solution in the fire extinguishing stock solution storage tank 21 falls below the set level. The first control unit 26 stops the motor M of the pump 24 based on the signal from the level sensor 21a.

・ Control of fire extinguishing stock solution replenishment system 2 (fuel supply)
The second control unit 28 immediately opens the second valve 27b based on the signal L from the level sensor 22a. If the motor M of the pump 14 of the refueling system 10 is driving when the second valve 27b is opened and the first valve 15b is in the open state, the first pipe of the refueling system 10 The fuel flowing in the passage 15 is supplied to the fuel tank 22 via the hose 17 and the second pipeline 27.

Here, when the second valve 27b is opened, the motor M of the pump 14 of the refueling system 10 may not be driven, and the first valve 15b may be in a closed state. Even in such a case, if the second valve 27b of the fire extinguishing stock solution replenishment system 20 is opened, the fuel in the first pipeline 15 of the refueling system 10 flows to the outside, and the secondary side of the first orifice 15a becomes. The pressure becomes P2 or less. As a result, the refueling system 10 drives the motor M of the pump 14 to open the first valve 15b.

On the other hand, the second control unit 28 immediately closes the second valve 27b based on the signal H from the level sensor 22a. As a result, the fuel supply to the fuel tank 22 is stopped. After that, if the fuel in the first pipeline 15 of the refueling system 10 does not flow to the outside, the pressure P1 or higher on the secondary side of the first orifice 15a is reached. As a result, the refueling system 10 keeps the first valve 15b closed and stops the motor M of the pump 14.

-Circuit of the pump system In FIG. 2, the fuel tank 32, the water supply pump 34, and the water intake pump 36 included in the pump system 30 have already been described with reference to FIG. Further, the engine E, the generator G, and the motor M included in the pump system 30 of FIG. 2 correspond to the water supply drive source 33 or the water intake drive source 35 of FIG.

The fuel tank 32 of the pump system 30 is connected to the refueling system 10 described above. The refueling system 10 is provided with the plurality of first connection portions 15d described above. On the other hand, the pump system 30 is provided with a second connecting portion 37c corresponding to the first connecting portion 15d. The second connection portion 37c is, for example, a hose connection header provided with a connection fitting. The first connecting portion 15d and the second connecting portion 37c are connected to each other by a hose 17. The hose 17 has a length assuming a distance between the refueling system 10 and the pump system 30. The fuel tank 32 receives fuel from the refueling system 10 via the second connection 37c.

The fuel tank 32 is connected to the second connecting portion 37c via the second pipeline 37. The second pipeline 37 is provided with a second orifice 37a and a second valve 37b. The second orifice 37a is located on the primary side of the second pipeline 37. The second orifice 37a has a circular hole having a diameter smaller than the inner diameter of the second pipeline 37. The second orifice 37a controls the flow rate and pressure of the fuel flowing in the second pipeline 37. The second valve 37b is located on the secondary side of the second orifice 37a. The second valve 37b allows or stops the flow of fuel into the second pipeline 37.

Further, the fuel tank 32 is provided with a level sensor 32a. The level sensor 32a transmits a signal when the fuel in the fuel tank 32 falls below the set level. Two types of levels X1 and X2 are set in the level sensor 32a of the present embodiment. Level X1 indicates an upper limit, level X2 indicates a lower limit, and there is a relationship of X1> X2. The level sensor 32a transmits a signal H when the fuel in the fuel tank 32 becomes level X1 or higher, and transmits a signal L when the fuel in the fuel tank 32 becomes level X2 or lower.

The second control unit 38 is connected to the level sensor 32a and the second valve 37b. The second control unit 38 controls the second valve 37b based on the signal from the level sensor 32a. The control of the second valve 37b by the second control unit 38 will be described later.

The motor M of the water intake pump 36 is connected to the generator G via a power cable. Further, the pump P of the water intake pump 36 is connected to the water supply pump 34 via a hose. The water intake pump 36 can be loaded and unloaded from the pump system 30 and is put into water with the hose and power cable connected. The water supply pump 34 is connected to the pump 44 of the mixing system 40.

・ Pump system control (fuel supply)
The second control unit 38 immediately opens the second valve 37b based on the signal L from the level sensor 32a. If the motor M of the pump 14 of the refueling system 10 is driving when the second valve 37b is opened and the first valve 15b is in the open state, the first pipe of the refueling system 10 The fuel flowing in the passage 15 is supplied to the fuel tank 32 via the hose 17 and the second pipeline 37.

Here, when the second valve 37b is opened, the motor M of the pump 14 of the refueling system 10 may not be driven, and the first valve 15b may be in a closed state. Even in such a case, if the second valve 37b of the pump system 30 is opened, the fuel in the first pipeline 15 of the refueling system 10 flows to the outside, and the secondary side of the first orifice 15a is pressure P2. It becomes as follows. As a result, the refueling system 10 drives the motor M of the pump 14 to open the first valve 15b.

On the other hand, the second control unit 38 immediately closes the second valve 37b based on the signal H from the level sensor 32a. As a result, the fuel supply to the fuel tank 32 is stopped. After that, if the fuel in the first pipeline 15 of the refueling system 10 does not flow to the outside, the pressure P1 or higher on the secondary side of the first orifice 15a is reached. As a result, the refueling system 10 keeps the first valve 15b closed and stops the motor M of the pump 14.

-Circuit of the mixing system In FIG. 2, the fire extinguishing stock solution tank 41, the fuel tank 42, the pump 44, and the mixer 45 included in the mixing system 40 have already been described with reference to FIG. Further, the engine E, the generator G and the motor M included in the mixing system 40 of FIG. 2 correspond to the drive source 43 of FIG.

As described above, the mixing system 40 includes a fire extinguishing stock solution tank 41 and a fuel tank 42. First, the configuration of the circuit related to the fire extinguishing stock solution tank 41 will be described. The fire extinguishing stock solution tank 41 of the mixing system 40 is connected to the fire extinguishing stock solution replenishment system 20 described above. The fire extinguishing stock solution replenishment system 20 is provided with the plurality of first connection portions 25d described above. On the other hand, the mixing system 40 is provided with a second connection portion 46c corresponding to the first connection portion 25d. The second connection portion 46c is, for example, a hose connection header provided with a connection fitting. The first connecting portion 25d and the second connecting portion 46c are connected to each other by a hose 17. The hose 17 has a length assuming a distance between the fire extinguishing stock solution replenishment system 20 and the mixing system 40. The fire extinguishing stock solution tank 41 receives the fire extinguishing stock solution from the fire extinguishing stock solution replenishment system 20 via the second connection portion 46c.

The fire extinguishing stock solution tank 41 is connected to the second connecting portion 46c via the second pipeline 46. The second pipeline 46 is provided with a second orifice 46a and a second valve 46b. The second orifice 46a is located on the primary side of the second pipeline 46. The second orifice 46a has a circular hole having a diameter smaller than the inner diameter of the second pipeline 46. The second orifice 46a controls the flow rate and pressure of the fire extinguishing stock solution flowing in the second pipeline 46. The second valve 46b is located on the secondary side of the second orifice 46a. The second valve 46b allows or stops the flow of the fire extinguishing stock solution into the second pipeline 46.

Further, the fire extinguishing stock solution tank 41 is provided with a level sensor 41a. The level sensor 41a transmits a signal when the fire extinguishing stock solution in the fire extinguishing stock solution tank 41 falls below the set level. Two types of levels X1 and X2 are set in the level sensor 41a of the present embodiment. Level X1 indicates an upper limit, level X2 indicates a lower limit, and there is a relationship of X1> X2. The level sensor 41a transmits a signal H when the fire extinguishing stock solution in the fire extinguishing stock solution tank 41 becomes level X1 or higher, and transmits a signal L when the level X2 or lower.

The second control unit 48 is connected to the level sensor 41a and the second valve 46b. The second control unit 48 controls the second valve 46b based on the signal from the level sensor 41a. The control of the second valve 46b by the second control unit 48 will be described later.

Next, the configuration of the circuit related to the fuel tank 42 will be described. The fuel tank 42 of the mixing system 40 is connected to the refueling system 10 described above. The refueling system 10 is provided with the plurality of first connection portions 15d described above. On the other hand, the mixing system 40 is provided with a second connection portion 47c corresponding to the first connection portion 15d. The second connection portion 47c is, for example, a hose connection header provided with a connection fitting. The first connecting portion 15d and the second connecting portion 47c are connected to each other by a hose 17. The hose 17 has a length assuming a distance between the refueling system 10 and the mixing system 40. The fuel tank 42 receives fuel from the refueling system 10 via the second connection portion 47c.

The fuel tank 42 is connected to the second connecting portion 47c via the second pipeline 47. The second pipeline 47 is provided with a second orifice 47a and a second valve 47b. The second orifice 47a is located on the primary side of the second pipeline 47. The second orifice 47a has a circular hole having a diameter smaller than the inner diameter of the second pipeline 47. The second orifice 47a controls the flow rate and pressure of the fuel flowing in the second pipeline 47. The second valve 47b is located on the secondary side of the second orifice 47a. The second valve 47b allows or stops the flow of fuel into the second pipeline 47.

Further, the fuel tank 42 is provided with a level sensor 42a. The level sensor 42a transmits a signal when the fuel in the fuel tank 42 falls below the set level. Two types of levels X1 and X2 are set in the level sensor 42a of the present embodiment. Level X1 indicates an upper limit, level X2 indicates a lower limit, and there is a relationship of X1> X2. The level sensor 42a transmits a signal H when the fuel in the fuel tank 42 becomes level X1 or higher, and transmits a signal L when the fuel in the fuel tank 42 becomes level X2 or lower.

The second control unit 49 is connected to the level sensor 42a and the second valve 47b. The second control unit 49 controls the second valve 47b based on the signal from the level sensor 42a. The control of the second valve 47b by the second control unit 49 will be described later.

The two inlets of the mixer 45 are connected to the fire extinguishing stock solution tank 41 and the pump 44. The mixer 45 mixes the fire extinguishing stock solution stored in the fire extinguishing stock solution tank 41 with the fire extinguishing water supplied from the pump 44 at a predetermined ratio to generate a foam fire extinguishing agent diluted to a predetermined concentration. Further, the outlet of the mixer 45 is connected to the water discharge pump 54 of the water discharge system 50.

・ Control of mixing system (supply of fire extinguishing stock solution)
First, the supply control of the fire extinguishing stock solution by the second control unit 48 of the fire extinguishing stock solution tank 41 will be described. The second control unit 48 immediately opens the second valve 46b based on the signal L from the level sensor 41a. When the motor M of the pump 24 of the fire extinguishing stock solution replenishment system 20 is driven when the second valve 46b is opened, and the first valve 25b is in the open state, the fire extinguishing stock solution replenishment system 20 is the first. The fire extinguishing stock solution flowing in the one pipeline 25 is supplied to the fire extinguishing stock solution tank 41 via the hose 17 and the second pipeline 46.

Here, when the second valve 46b is opened, the motor M of the pump 24 of the fire extinguishing stock solution replenishment system 20 may not be driven, and the first valve 25b may be in a closed state. Even in such a case, if the second valve 46b of the mixing system 40 is opened, the fire extinguishing stock solution in the first pipeline 25 of the fire extinguishing stock solution replenishment system 20 flows to the outside, and the secondary side of the first orifice 25a becomes. The pressure becomes P2 or less. As a result, the fire extinguishing stock solution replenishment system 20 drives the motor M of the pump 24 to open the first valve 25b.

On the other hand, the second control unit 48 immediately closes the second valve 46b based on the signal H from the level sensor 41a. As a result, the supply of the fire extinguishing stock solution to the fire extinguishing stock solution tank 41 is stopped. After that, if the fire extinguishing stock solution in the first pipeline 25 of the fire extinguishing stock solution replenishment system 20 does not flow to the outside, the secondary side of the first orifice 25a becomes a pressure P1 or more. As a result, the fire extinguishing stock solution replenishment system 20 keeps the first valve 25b closed and stops the motor M of the pump 24.

・ Control of mixing system (fuel supply)
Next, the fuel supply control by the second control unit 49 of the fuel tank 42 will be described. The second control unit 49 immediately opens the second valve 47b based on the signal L from the level sensor 42a. If the motor M of the pump 14 of the refueling system 10 is driving when the second valve 47b is opened and the first valve 15b is in the open state, the first pipe of the refueling system 10 The fuel flowing in the passage 15 is supplied to the fuel tank 42 via the hose 17 and the second pipeline 47.

Here, when the second valve 47b is opened, the motor M of the pump 14 of the refueling system 10 may not be driven, and the first valve 15b may be in a closed state. Even in such a case, if the second valve 47b of the mixing system 40 is opened, the fuel in the first pipeline 15 of the refueling system 10 flows to the outside, and the secondary side of the first orifice 15a is pressure P2. It becomes as follows. As a result, the refueling system 10 drives the motor M of the pump 14 to open the first valve 15b.

On the other hand, the second control unit 49 immediately closes the second valve 47b based on the signal H from the level sensor 42a. As a result, the fuel supply to the fuel tank 42 is stopped. After that, if the fuel in the first pipeline 15 of the refueling system 10 does not flow to the outside, the pressure P1 or higher on the secondary side of the first orifice 15a is reached. As a result, the refueling system 10 keeps the first valve 15b closed and stops the motor M of the pump 14.

-Circuit of the water discharge system In FIG. 2, the fuel tank 52 and the water discharge pump 54 included in the water discharge system 50 have already been described with reference to FIG. Further, the engine E, the generator G and the motor M included in the water discharge system 50 of FIG. 2 correspond to the drive source 53 of FIG.

The fuel tank 52 of the water discharge system 50 is connected to the refueling system 10 described above. The refueling system 10 is provided with the plurality of first connection portions 15d described above. On the other hand, the water discharge system 50 is provided with a second connection portion 55c corresponding to the first connection portion 15d. The second connection portion 55c is, for example, a hose connection header provided with a connection fitting. The first connecting portion 15d and the second connecting portion 55c are connected to each other by a hose 17. The hose 17 has a length assuming a distance between the refueling system 10 and the water discharge system 50. The fuel tank 52 receives fuel from the refueling system 10 via the second connection portion 55c.

The fuel tank 52 is connected to the second connecting portion 55c via the second pipeline 55. The second pipeline 55 is provided with a second orifice 55a and a second valve 55b. The second orifice 55a is located on the primary side of the second pipeline 55. The second orifice 55a has a circular hole having a diameter smaller than the inner diameter of the second pipeline 55. The second orifice 55a controls the flow rate and pressure of the fuel flowing in the second pipeline 55. The second valve 55b is located on the secondary side of the second orifice 55a. The second valve 55b allows or stops the flow of fuel into the second pipeline 55.

Further, the fuel tank 52 is provided with a level sensor 52a. The level sensor 52a transmits a signal when the fuel in the fuel tank 52 falls below the set level. Two types of levels X1 and X2 are set in the level sensor 52a of the present embodiment. Level X1 indicates an upper limit, level X2 indicates a lower limit, and there is a relationship of X1> X2. The level sensor 52a transmits a signal H when the fuel in the fuel tank 52 becomes level X1 or higher, and transmits a signal L when the fuel in the fuel tank 52 becomes level X2 or lower.

The second control unit 56 is connected to the level sensor 52a and the second valve 55b. The second control unit 56 controls the second valve 55b based on the signal from the level sensor 52a. The control of the second valve 55b by the second control unit 56 will be described later.

The inlet of the discharge pump 54 is connected to the mixer 45 of the mixing system 40 described above. The outlet of the water discharge pump 54 is connected to a foam nozzle or the like. The water discharge pump 54 sucks the foam fire extinguishing agent supplied from the mixer 45, foams the foam fire extinguishing agent with a foam nozzle or the like, and discharges foam.

・ Control of water discharge system (fuel supply)
The second control unit 56 immediately opens the second valve 55b based on the signal L from the level sensor 52a. If the motor M of the pump 14 of the refueling system 10 is driving when the second valve 55b is opened and the first valve 15b is in the open state, the first pipe of the refueling system 10 The fuel flowing in the passage 15 is supplied to the fuel tank 52 via the hose 17 and the second pipeline 55.

Here, when the second valve 55b is opened, the motor M of the pump 14 of the refueling system 10 may not be driven, and the first valve 15b may be in a closed state. Even in such a case, if the second valve 55b of the water discharge system 50 is opened, the fuel in the first pipeline 15 of the refueling system 10 flows to the outside, and the secondary side of the first orifice 15a is pressure P2. It becomes as follows. As a result, the refueling system 10 drives the motor M of the pump 14 to open the first valve 15b.

On the other hand, the second control unit 56 immediately closes the second valve 55b based on the signal H from the level sensor 52a. As a result, the fuel supply to the fuel tank 52 is stopped. After that, if the fuel in the first pipeline 15 of the refueling system 10 does not flow to the outside, the pressure P1 or higher on the secondary side of the first orifice 15a is reached. As a result, the refueling system 10 keeps the first valve 15b closed and stops the motor M of the pump 14.

<First Embodiment>
Next, the first embodiment of the fire extinguishing system of FIGS. 1 and 2 described above will be described with reference to FIG.

As shown in FIG. 3, the fire extinguishing system 2 of the first embodiment includes the above-mentioned refueling system 10, fire extinguishing stock solution replenishment system 20, pump system 30, mixing system 40, and water discharge system 50. The refueling system 10 and the fire extinguishing stock solution replenishment system 20 are fixed equipment installed on land or a building, while the pump system 30, the mixing system 40 and the water discharge system 50 can be mounted on separate vehicles. It is a portable facility.

The refueling system 10 and the fire extinguishing stock solution replenishment system 20 of the first embodiment are installed on the premises of, for example, an oil complex or a nuclear power plant. By making the refueling system 10 and the fire extinguishing stock solution replenishment system 20 fixed type equipment, it is possible to make the fuel storage tank 11 and the fire extinguishing stock solution storage tank 21 extremely large in capacity. The fuel storage tank 11 and the fire extinguishing stock solution storage tank 21 have a large capacity capable of storing an amount of fuel for operating the fire extinguishing system 2 for, for example, several days to one week.

The fire extinguishing stock solution replenishment system 20 is connected to each of the refueling system 10 and the mixing system 40 via a hose (not shown) arranged outdoors. The fire extinguishing stock solution replenishment system 20 during operation supplies the fire extinguishing stock solution to the mixing system 40 and receives fuel from the refueling system 10. As a result, the fire extinguishing stock solution replenishment system 20 can continuously supply a large amount of fire extinguishing stock solution to the mixing system 40 over a long period of time.

The pump system 30 of the first embodiment is mounted on a vehicle to form, for example, a fire pump vehicle. The pump system 30 as a fire-fighting pump vehicle is arranged near a water source such as infinite irrigation in the event of a fire. The water intake pump 36 is taken down from the vehicle and put into water such as the sea or a river. The pump system 30 is connected to each of the refueling system 10 and the mixing system 40 via a hose (not shown) arranged outdoors. The operating pump system 30 supplies fire extinguishing water to the mixing system 40 and receives fuel from the refueling system 10. As a result, the pump system 30 can continuously supply a large amount of fire extinguishing water to the mixing system 40 over a long period of time.

The mixing system 40 of the first embodiment is mounted on a vehicle to form, for example, a chemical fire engine. The mixing system 40 as a chemical fire engine is arranged between the pump system 30 and the water discharge system 50, for example, in the vicinity of the water discharge system 50 in the event of a fire. The mixing system 40 is connected to each of the refueling system 10, the fire extinguishing stock solution replenishment system 20, the pump system 30, and the water discharge system 50 via a hose (not shown) arranged outdoors. The mixing system 40 during operation receives the fire extinguishing stock solution from the fire extinguishing stock solution replenishment system 20 and the fire extinguishing water from the pump system 30, and discharges the mixed solution (foam fire extinguishing agent) of the fire extinguishing water and the fire extinguishing stock solution. Supply to 50. Further, the mixing system 40 in operation receives fuel from the refueling system 10. As a result, the mixing system 40 can continuously supply a large amount of foam fire extinguishing agent to the water discharge system 50 over a long period of time.

The water discharge system 50 of the first embodiment is mounted on a vehicle to form, for example, a water discharger, a high-altitude water discharger, a refraction water discharge tower vehicle, a large-capacity foam water cannon, or the like. The water discharge system 50 as a water discharge vehicle or the like is arranged near a fire site such as an oil tank at the time of a fire. The water discharge system 50 is connected to each of the refueling system 10 and the mixing system 40 via a hose (not shown) arranged outdoors. The water discharge system 50 during operation receives the supply of the foam fire extinguishing agent from the mixing system 40, and discharges foam from the foam nozzle or the like. Further, the operating water discharge system 50 receives fuel from the refueling system 10. As a result, the water discharge system 50 can continuously discharge a large amount of foam over a long period of time.

<Second embodiment>
Next, the second embodiment of the fire extinguishing system of FIGS. 1 and 2 described above will be described with reference to FIG.

As shown in FIG. 4, in the fire extinguishing system 3 of the second embodiment, the pump system 30 and the mixing system 40 are mounted on one vehicle, and form, for example, a chemical fire pump vehicle. The pump system 30 and the mixing system 40 are connected to each other via hoses (not shown) arranged in the vehicle. Further, the pump system 30 and the mixing system 40 are connected to the refueling system 10 via a hose (not shown) arranged outdoors. Further, the mixing system 40 is connected to the fire extinguishing stock solution replenishment system and the water discharge system 50 via a hose outside the vehicle (not shown). Other configurations of the fire extinguishing system 3 of the second embodiment are the same as those of the first embodiment described above, and it is possible to continuously discharge a large amount of foam over a long period of time.

According to the fire extinguishing system 3 of the second embodiment, the pump system 30, the mixing system 40 and the water discharge system 50 are integrated into two portable facilities. As a result, the pump system 30, the mixing system 40, and the water discharge system 50 can be quickly deployed in the event of a fire. In addition, the number of hoses distributed outdoors in the event of a fire is reduced, reducing the time and effort required for workers to connect hoses. Further, in the present embodiment, the pump system 30 and the mixing system 40 may share one fuel tank. Further, if the drive source of the water discharge system 50 and the mixing system 40 is unified, the configuration of the fire extinguishing equipment can be simplified, downsized and reduced in weight.

<Third Embodiment>
Next, the third embodiment of the fire extinguishing system of FIGS. 1 and 2 described above will be described with reference to FIG.

As shown in FIG. 5, in the fire extinguishing system 4 of the third embodiment, the pump system 30, the mixing system 40, and the water discharge system 50 are mounted on one vehicle, and form, for example, a large chemical fire engine. This large chemical fire engine is equipped with a foam nozzle for foaming foam fire extinguishing agents. The pump system 30 and the mixing system 40 are connected to each other via hoses (not shown) arranged in the vehicle. Similarly, the mixing system 40 and the water discharge system 50 are also connected to each other via hoses (not shown) arranged in the vehicle. Further, the pump system 30, the mixing system 40 and the water discharge system 50 are connected to the refueling system 10 via a hose (not shown) arranged outdoors. Further, the mixing system 40 is connected to the fire extinguishing stock solution replenishment system 20 via a hose (not shown) arranged outdoors. Other configurations of the fire extinguishing system 4 of the third embodiment are the same as those of the first embodiment described above, and it is possible to continuously discharge a large amount of foam over a long period of time.

According to the fire extinguishing system 4 of the third embodiment, the pump system 30, the mixing system 40, and the water discharge system 50 are integrated into one portable facility. As a result, the pump system 30, the mixing system 40 and the water discharge system 50 can be deployed extremely quickly in the event of a fire. In addition, the number of hoses distributed outdoors in the event of a fire is further reduced, and the labor of connecting hoses by workers is greatly reduced. The fire extinguishing system 4 of the third embodiment has high mobility, can be quickly deployed at a fire site, and is suitable for initial fire extinguishing that is carried out early after a fire occurs. Further, in the present embodiment, the pump system 30 and the mixing system 40 may share one fuel tank. In addition to this, if the drive source of the water discharge system 50 and the mixing system 40 is unified, the configuration of the fire extinguishing equipment can be simplified, downsized and reduced in weight.

<Effect>
As described above, according to the fire extinguishing system of the present embodiment, the refueling system, which is a refueling unit, is a fire extinguishing stock solution replenishment system and a pump system, which are a plurality of fire extinguishing facilities, based on the pressure of its own first pipeline. , The mixing system and the water discharge system can be automatically supplied with fuel. Similarly, the fire extinguishing stock solution replenishment system as a replenishment unit can automatically supply the fire extinguishing stock solution to a plurality of mixed systems which are a plurality of fire extinguishing facilities based on the pressure of its own first pipeline. That is, the fire extinguishing system of the present embodiment can automatically supply fuel and fire extinguishing stock solution to a plurality of fire extinguishing equipments in operation by an extremely simple control method without monitoring the state of each fire extinguishing equipment. ..

Therefore, the fire extinguishing system of the present embodiment does not require a signal cable for connecting the replenishment unit and the fire extinguishing equipment as in the prior art, and eliminates the possibility of failure due to disconnection of the signal cable or the like. Can be done. In addition, the fire extinguishing system of the present embodiment can automatically supply not only fuel but also fire extinguishing stock solution to a plurality of fire extinguishing equipment, thereby realizing continuous large amount of foam discharge over a long period of time. To.

Here, the fire extinguishing system of the present embodiment can accurately detect the pressure of the first pipeline in the refueling system and the fire extinguishing stock solution replenishment system. That is, the fire extinguishing system of the present embodiment has a configuration in which a first orifice is provided in the first pipeline on the supply unit side and a second orifice is provided in each second pipeline on the plurality of fire extinguishing equipment sides. Then, by setting the hole diameters of the first and second orifices to predetermined sizes, it is possible to set a predetermined pressure range in a state where fuel or fire extinguishing stock solution is flowing between the first and second orifices. it can. As a result, when the second valve of each fire extinguishing system is opened and closed, the pressure change in the first pipeline can be detected more accurately.

In addition, the liquid level of the fuel tank or the undiluted solution tank of the fire extinguishing equipment may frequently move up and down due to vibration or the like. Therefore, in the fire extinguishing system of the present embodiment, even when the first pipeline reaches a predetermined pressure P1 or higher, the first valve is not immediately closed or the pump is not stopped, and after a predetermined delay time has elapsed. , The first valve is closed and the pump is stopped. By such delay control, the opening and closing of the first valve and the driving / stopping of the pump are not repeated in accordance with the frequent vertical movement of the liquid level, and the wear of the first valve and the pump is prevented.

Further, in the fire extinguishing system of the present embodiment, if the first pipeline does not exceed the predetermined pressure P2 even after a predetermined time has passed since the supply of the fuel or the fire extinguishing stock solution was started, the pump is stopped to give an alarm. Is made to emit. As a result, damage caused by leakage of fuel or fire extinguishing stock solution can be minimized.

In addition to this, in the fire extinguishing system of the present embodiment, when the discharge pressure of the pump that sucks the fuel or the fire extinguishing stock solution exceeds a preset constant pressure, the pressure control valve is opened and discharged from the pump. The fuel or fire extinguishing stock solution is returned to the fuel storage tank or the fire extinguishing stock solution storage tank again. As a result, the pressure on the primary side (primary side of the first orifice) of the first pipeline is kept constant, and an appropriate flow rate of fuel or fire extinguishing stock solution is always delivered to the first pipeline.

<Other changes>
The fire extinguishing system of the present invention is not limited to the configuration and control method of the above-described embodiment. For example, the refueling system and the fire extinguishing stock solution replenishment system, which are replenishment units, may be portable equipment mounted on the vehicle. Conversely, the pump system, mixing system, and water discharge system, which are fire extinguishing equipment, may be fixed equipment installed on land or a building.

Further, the fire extinguishing system of the above-described embodiment is configured to detect the pressure on the secondary side of the first orifice in the first pipeline, but is not limited thereto. The detection method is not particularly limited as long as it is configured to detect the pressure on the secondary side of the first valve in the first pipeline. For example, the configuration may be such that the differential pressure between the pressure on the primary side and the pressure on the secondary side of the first orifices 15a and 25a shown in FIG. 2 is detected.

Further, the fire extinguishing stock solution supply system and the mixing system may be omitted from the fire extinguishing system of the above-described embodiment, and only the fire extinguishing water may be discharged. A system that discharges only fire extinguishing water can be used, for example, as an emergency measure when water injection into a nuclear reactor is stopped in a nuclear power plant.

1, 2, 3, 4 Fire extinguishing system 10 Refueling system (one replenishment unit)
11 Fuel storage tank (replenishment tank)
11a Level sensor 12 Fuel tank (replenished tank)
13 Drive source 14 Pump 14a Pressure control valve 15 First pipeline 15a First orifice 15b First valve 15c Pressure sensor 15d First connection part 16 First control part 17 Hose 20 Fire extinguishing stock solution replenishment system (other replenishment parts, fire extinguishing equipment) )
21 Fire extinguishing stock solution storage tank (replenishment tank)
21a Level sensor 22 Fuel tank (replenished tank)
22a Level sensor 23 Drive source 24 Pump 24a Pressure control valve 25 First conduit 25a First orifice 25b First valve 25c Pressure sensor 25d First connection 26 First control 27 Second pipeline 27a Second orifice 27b Second Valve 27c Second connection 28 Second control 30 Pump system (fire extinguishing equipment)
32 Fuel tank (replenished tank)
32a Level sensor 33 Water supply drive source 34 Water supply pump 35 Water intake drive source 36 Water intake pump 37 Second pipeline 37a Second orifice 37b Second valve 37c Second connection 38 Second control unit 40 Mixing system (fire extinguishing equipment)
41 Fire extinguishing stock solution tank (replenishment tank)
41a Level sensor 42 Fuel tank (replenished tank)
42a Level sensor 43 Drive source 44 Pump 45 Mixer 46, 47 Second pipeline 46a, 47a Second orifice 46b, 47b Second valve 46c, 47c Second connection 48, 49 Second control 50 Water discharge system (fire extinguishing equipment) )
52 Fuel tank (replenished tank)
52a Level sensor 53 Drive source 54 Water discharge pump 55 Second pipeline 55a Second orifice 55b Second valve 55c Second connection 56 Second control 101, 102 Tank truck E engine G generator M motor P pump TM timer

Claims (5)

It is a refueling system that is connected to the fire extinguishing equipment via a hose and automatically supplies fuel to the fire extinguishing equipment.
The refueling system
A replenishment tank in which the fuel is stored and
A pump for sucking and discharging the fuel from the replenishment tank,
The first pipeline through which the fuel discharged from the pump flows, and
The first valve provided in the first pipeline and
A pressure sensor that detects the pressure on the secondary side of the first valve in the first pipeline, and
Based on the detection result of the pressure sensor, the first control unit that opens and closes the first valve and
The fuel is supplied through the first pipeline and includes at least one first connection portion to which one end of the hose is connected.
The first control unit
When the pressure on the secondary side of the first valve in the first pipeline becomes lower than the preset pressure, the control for opening the first valve is executed.
When the pressure on the secondary side of the first valve in the first pipeline becomes higher than the preset pressure, the control for closing the first valve is executed.
A refueling system characterized by that. The refueling system according to claim 1, which is a portable facility. A pump system as a fire extinguishing system, which is connected to the refueling system according to claim 1 or 2 via the hose and is automatically supplied with fuel from the refueling system .
The pump system
An intake pump for sucking fire extinguishing water,
A water supply pump for discharging the fire extinguishing water sucked into the water intake pump, and
At least one engine that is a drive source for the water intake pump and the water supply pump, and
A second connection portion to which the other end of the hose for supplying the fuel in the engine is connected,
The second pipeline through which the fuel passes through the second connection portion and
The second valve provided in the second pipeline and
A replenished tank in which the fuel that has passed through the second pipeline is stored, and
A level sensor that detects the level of the fuel stored in the refueling tank, and
A second control unit that opens and closes the second valve based on the detection result of the level sensor is included.
The second control unit
When the fuel stored in the replenished tank becomes lower than a preset level, the control for opening the second valve is executed.
When the fuel stored in the replenished tank becomes higher than a preset level, the control for closing the second valve is executed.
A pump system that features that. The pump system according to claim 3, which is a portable facility. The system according to claim 3 or 4 , wherein the refueling system is used to automatically supply fuel to the pump system, and the pump system is used for injecting cooling water into a nuclear reactor at a nuclear power plant.