JP2000126325A - Gas/water combination fire fighting installation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide gas/water combination fire fighting installations whose construction cost can be reduced and which can be easily applied to existing fire fighting installations because two installations, one for releasing a fire extinguishing gas and the other for spraying water, can be partly used in common. SOLUTION: The gas/water combination fire fighting installations are for extinguishing a fire by releasing a fire extinguishing gas and spraying water over fire fighting sections R1, R2 and R3. Water is sprayed over the fire fighting sections R1, R2 and R3 by using the pressure and flow of the fire extinguishing gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined gas / water fire extinguishing system in which a fire extinguishing agent gas is discharged into a fire extinguishing section and fire is extinguished by spraying water.

[0002]

2. Description of the Related Art Conventionally, a gas fire extinguishing system which extinguishes a fire by extinguishing a fire extinguisher gas into a fire extinguishing section and maintaining the concentration of the fire extinguishing gas in the fire extinguishing section higher than the flame-extinguishing concentration has been widely used. ing.

When an inert gas such as carbon dioxide or halon gas is used as a fire extinguishing gas in this type of gas fire extinguishing equipment, the extinguishing agent formed of a high-pressure gas container is liquefied by pressurizing the extinguishing gas. It is stored in a fire extinguishing system in a state filled with a storage container, and in the event of a fire, by opening the container valve of the fire extinguisher storage container using appropriate electric or mechanical means, carbon dioxide can be reduced. And halon gas are sent from the fire extinguishing agent storage container to the nozzle via a pipe, and are discharged from the nozzle into the fire extinguishing target compartment. At this time, the inert gas such as carbon dioxide and halon gas is sent in a liquid state to the nozzle, and is vaporized at the moment when the gas is discharged from the nozzle into the fire extinguishing target compartment, and becomes a gaseous state. To quell the fire.

[0004] The gas fire extinguishing system using an inert gas such as carbon dioxide or halon gas is capable of rapidly suppressing a fire, hardly contaminating a fire extinguishing agent with a fire extinguishing agent, and has a problem in that water-based fire extinguishing equipment is difficult. That it does not cause indirect damage such as water damage, such as impairing the insulation of electricity, and that a fire extinguishing agent can penetrate through gaps and exhibit a strong fire extinguishing effect even for fire extinguishing objects with a complicated structure, It is widely used not only for petroleum-related facilities and electric facilities, but also for general facilities, because it has the advantage of having a constant fire extinguishing ability over a long period of time without the extinguishing agent changing over time.

However, in recent years, a problem relating to destruction of the ozone layer has been raised on a worldwide scale, and production of fire extinguishing agents containing halogenated hydrocarbon components such as halon gas was discontinued in January 1994. It is virtually unusable.

On the other hand, it is known that fire extinguishing equipment using carbon dioxide as a fire extinguishing agent also has the following problems. (1) The design concentration (extinguishment concentration) of carbon dioxide in the fire extinguishing target compartment at the time of fire extinguishing is about 35%. At this concentration, if a person is present in the fire extinguishing target compartment, the Toxicities (narcotic effects) can cause life-threatening situations. (2) Since the density of carbon dioxide is much higher than that of air, the carbon dioxide released into the fire extinguishing compartment stays in the lower part of the fire extinguishing compartment and the fire extinguishing effect is reduced. It is easy to dissipate outside through the lower opening. (3) As the issue of global warming is raised on a global scale, the use of carbon dioxide may be restricted in the future, like halon gas.

To cope with the problems of the gas fire extinguishing equipment using carbon dioxide and halon gas, a fire extinguishing agent gas which does not destroy nitrogen gas or an ozone layer (see Japanese Patent Application Laid-Open No. 9-206397) and Gas fire extinguishing equipment that uses a mixed gas obtained by mixing a gas such as carbon dioxide, argon, neon, helium, krypton, xenon, etc. with nitrogen gas (in this specification, sometimes simply referred to as "mixed gas"). Has been proposed and put into practical use.

However, even in the case of a gas fire extinguishing system in which a nitrogen gas or a halide and a mixed gas that does not destroy the ozone layer are used as a fire extinguishing gas, the design concentration of the fire extinguishing gas in the fire extinguishing target compartment at the time of fire extinguishing is also required. Is much higher than halon gas, which inevitably increases the amount of extinguishing agent gas required to extinguish a fire extinguishing section of the same volume.In particular, nitrogen gas and mixed gas are stored in gaseous form under pressure. In order to use the fire extinguisher, a large installation space for the fire extinguisher storage container is required, and depending on the target combustibles, the design concentration of the fire extinguisher gas in the fire extinguishing target compartment during fire extinguishing must be particularly high, In this case, if there is any one person in the fire extinguishing target compartment, there is a possibility that a situation that adversely affects the human body may occur.

[0009]

In order to address this problem, recently, a combined gas / water fire extinguishing system has been proposed in which water is simultaneously sprayed when a fire extinguishing agent gas is discharged into a fire extinguishing target compartment. (See, for example, Japanese Patent Application Laid-Open No. 8-33730).

[0010] This gas / water combined fire extinguishing system can cool the combustion material by the sprayed water, so that the design concentration of the extinguishing agent gas in the fire extinguishing target compartment at the time of fire extinguishing can be reduced. In addition to reducing the amount of fire extinguisher gas required to extinguish a fire extinguisher in the same volume of fire extinguisher, the fire extinguisher can be safely extinguished even if there are all persons in the fire extinguisher. Since gas is used together, the amount of water spray required for fire extinguishing is far less than that of water-based fire extinguishing equipment, which may result in indirect damage such as water damage, such as impairing electrical insulation. It has advantages such as less.

[0011] However, this gas / water combined fire extinguishing system has the above-mentioned advantages, but uses both a fire extinguisher gas discharge and water spray. Inevitably, two systems of equipment are required, which significantly increases the construction cost of the equipment and is difficult to apply to existing fire extinguishing equipment.

The present invention solves the problems of the above combined gas and water fire extinguishing system at a glance, and part of two systems of a system for discharging a fire extinguishing agent gas and a system for spraying water. To provide a combined gas and water fire extinguishing system that can be used for existing fire extinguishing equipment while reducing the construction cost of the equipment by making it possible to share the same. With the goal.

[0013]

In order to achieve the above object, the combined gas / water fire extinguishing system of the present invention emits a fire extinguisher gas into a fire extinguishing target compartment and extinguishes the fire by spraying water. In the combined gas-water fire extinguishing system, water is sprayed into the fire extinguishing target compartment by using the action of the extinguishing agent gas, specifically, the gas pressure and / or gas flow of the extinguishing agent gas. It is characterized by doing so.

In this case, the nozzle for discharging the fire extinguishing agent gas and the nozzle for spraying water are commonly used,
The pipe for supplying the fire extinguishing agent gas and the pipe for supplying water can be shared, and the storage container for storing the fire extinguishing agent gas and the storage container for storing the water can be shared.

[0015] The combined gas / water fire extinguishing system can cool the combusted material by the sprayed water, so that the design concentration of the extinguishant gas in the fire extinguishing target compartment at the time of fire extinguishing can be reduced. In addition to reducing the amount of fire extinguisher gas required to extinguish a fire extinguisher in the same volume of fire extinguisher, the fire extinguisher can be safely extinguished even if there are all persons in the fire extinguisher. Because gas is used together, the spray amount of water required for fire extinguishing is far less than that of water-based fire extinguishing equipment, so-called, such as impairing electrical insulation,
In addition to the advantage that indirect damage such as water damage is less likely to occur, water is sprayed into the fire extinguisher compartment using the gas pressure and / or gas flow of the extinguishing agent gas. In addition, it is possible to share a part of the two systems of the equipment for discharging the fire extinguishing agent gas and the equipment for spraying water. In addition, this gas / water combined fire extinguishing system can use the gas pressure and / or gas flow of the extinguishing agent gas to diffuse the sprayed water particles. It becomes possible to diffuse uniformly in the target section.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a combined gas / water fire extinguishing system according to the present invention will be described with reference to the drawings.

The combined gas / water fire extinguishing system of the present invention discharges a fire extinguishing agent gas such as a nitrogen gas or a mixed gas into a fire extinguishing section, simultaneously with this or by interposing an appropriate delay device. In a gas / water combined fire extinguishing system in which a fire is extinguished by spraying water with a time difference, the action of the extinguishing agent gas, specifically, the gas pressure and / or the gas flow of the extinguishing agent gas is reduced. Water is sprayed into the fire extinguishing area using this gas.
Since the water combined fire extinguishing system can cool the combustion material by the sprayed water, this can reduce the design concentration of the extinguishing agent gas in the fire extinguishing target compartment at the time of fire extinguishing,
In addition to reducing the amount of fire extinguisher gas required to extinguish a fire extinguisher in the same volume of fire extinguisher, it is also possible to extinguish the fire safely even if there are any people in the fire extinguisher. Since the amount of water spray required for fire extinguishing is much smaller than that of water-based fire extinguishing equipment, it is less likely to cause indirect damage such as water damage, such as impairing electrical insulation. In addition to the advantages of using the gas pressure and / or gas flow of the extinguishing agent gas,
Since water is sprayed in the fire extinguishing area,
This makes it possible to share a part of the equipment of the two systems of the equipment for discharging the fire extinguishing agent gas and the equipment for spraying water.

FIG. 1 shows a first embodiment of a combined gas / water fire extinguishing system according to the present invention. This combined gas / water fire extinguishing system uses nitrogen gas as a fire extinguishing agent gas, and pressurizes the nitrogen gas to fill the high-pressure gas container (in the present embodiment, 3 g).
It is used as a fire extinguisher storage container 1 by storing it in a fire extinguishing facility at 5 ° C. at 150 kgf / cm ² ). The number of fire extinguisher storage containers 1 to be stored in fire extinguishing equipment
The total amount of the mixed gas charged and stored in the fire extinguisher storage container 1 is an amount that can maintain the concentration of the mixed gas in the fire extinguishing target sections R1, R2, and R3 at or above a required concentration in the event of a fire. Set as follows.

Each extinguishing agent storage container 1 is connected to a connecting pipe 3 via a container valve 2, and the connecting pipe 3 is connected to a single collecting pipe 4.
And the collecting pipe 4 is connected to the selection valves 5-1, 5-2, 5
-3, connect to the main pipes 6-1, 6-2, 6-3 extending to the fire extinguishing sections R1, R2, R3. Main pipes 6-1 and 6 extending to fire extinguishing sections R1, R2 and R3
-2, 6-3 are connected to the branch pipe 7 arranged in the fire extinguishing sections R1, R2, R3, and this branch pipe 7 is connected to the fire extinguishing section R
The nozzles 8 are connected to a plurality of nozzles 8 provided at appropriate positions in 1, R2, and R3.

In this case, the fire extinguishing sections R1, R
2, a plurality of water tanks 9 are installed at appropriate places in R3, and the water tank 9 is connected to the branch pipe 7 through an introduction pipe 91, and the water tank 9 is connected to a water spray nozzle 10 through a discharge pipe 92.
And fire extinguishing target sections R1, R
2. Spray water into R3. Preferably, the water tank 9 is provided to prevent the water stored in the water tank 9 from leaking, and to prevent the water tank 9 from being leaked in the event of a fire.
A piston 93 that movably intercepts the extinguishing agent gas introduced from the introduction pipe 91 and the stored water is movably provided so that the water stored in the water can be smoothly discharged through the discharge pipe 92. To do. Note that a flexible film such as a rubber film may be used instead of the piston 93.

This combined gas / water fire extinguishing system
The container valve 2 and the selection valve 5 of the fire extinguisher storage container 1 are manually or automatically operated by automatic operation such as interlocking with a fire alarm device or a fire alarm using appropriate electric or mechanical means.
By opening -1, 5-2 and 5-3, the fire extinguishing agent gas is supplied from the fire extinguishing agent storage container 1 to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the main pipes 6-1 to 6-2 and 6 to 6. -3 and the branch pipe 7 to the nozzle 8, and from the nozzle 8 to the fire extinguishing section R1,
Fire extinguishing agent gas is selectively released into R2 and R3. At this time, the gas pressure of the extinguishing agent gas flowing through the branch pipe 7 becomes
The water stored in the water tank 9 acts as a pushing force on the water tank 9 via the introduction pipe 91, and the water stored in the water tank 9 is supplied to the fire extinguishing section R from the water spray nozzle 10 connected via the discharge pipe 92.
1, R2 and R3 are selectively sprayed.

As described above, in the present embodiment, the fire extinguishing target compartments R1, R2, R
3, water can be sprayed, and in the equipment for spraying water, the water discharging means (drive source) can be omitted.

FIG. 2 shows a second embodiment of the combined gas / water fire extinguishing system of the present invention. In the present embodiment, a plurality of water tanks 9 are installed at appropriate locations in the fire extinguishing target sections R1, R2, and R3, and the water tank 9 is connected to the branch pipe 7 via the introduction pipe 91, and the water tank 9 is The discharge pipe 92 is connected to the branch pipe 11 connected to the branch pipe 7, and water is sprayed into the fire extinguishing target sections R1, R2, and R3 from the nozzle 8 disposed on the branch pipe 11. Preferably, the water stored in the water tank 9 is prevented from leaking into the water tank 9, and the water stored in the water tank 9 is discharged through the discharge pipe 92 in the event of a fire. The piston 93 for shutting off the fire extinguishing agent gas introduced from the introduction pipe 91 and the stored water is provided so as to be able to be smoothly discharged. Note that a flexible film such as a rubber film may be used instead of the piston 93.

This combined gas and water fire extinguishing system
The container valve 2 and the selection valve 5 of the fire extinguisher storage container 1 are manually or automatically operated by automatic operation such as interlocking with a fire alarm device or a fire alarm using appropriate electric or mechanical means.
By opening -1, 5-2 and 5-3, the fire extinguishing agent gas is supplied from the fire extinguishing agent storage container 1 to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the main pipes 6-1 to 6-2 and 6 to 6. -3, the pipe is sent to the nozzle 8 via the branch pipe 7 and the branch pipe 11, and the fire extinguishing agent gas is selectively discharged from the nozzle 8 into the fire extinguishing sections R1, R2, R3. At this time, the gas pressure of the fire-extinguishing gas flowing through the branch pipe 7 is reduced by the water tank 9 through the fire-extinguishing gas introduction pipe 91.
The gas flow of the fire extinguishing agent gas flowing through the branch pipe 11 acts as a water suction force on the water tank 9 through the discharge pipe 92, and the water stored in the water tank 9. Is introduced into the branch pipe 11 through the discharge pipe 92,
The nozzle 8 provided in the branch pipe 11 is selectively sprayed into the fire extinguishing target sections R1, R2, and R3 while being put on the gas flow of the fire extinguishing agent gas.

As described above, in the present embodiment, the fire extinguishing target section R is utilized by utilizing the gas pressure and the gas flow of the fire extinguishing agent gas.
Water can be sprayed into 1, R2, and R3, and in a facility for spraying water, the water discharging means (drive source) and the water spray nozzle 10 can be omitted.

FIG. 3 shows a third embodiment of the combined gas / water fire extinguishing system of the present invention. In the present embodiment, a plurality of water tanks 9 are installed at appropriate places in the fire extinguishing sections R1, R2, and R3, and one end of the water tank 9 is opened to the atmosphere via an air introduction pipe 91, and the water tank 9 is opened. 9 is connected to the branch pipe 11 connected to the branch pipe 7 via the discharge pipe 92, and water is sprayed from the nozzle 8 disposed on the branch pipe 11 into the fire extinguishing sections R1, R2, and R3. Preferably, the water stored in the water tank 9 is prevented from leaking into the water tank 9, and the water stored in the water tank 9 is discharged through the discharge pipe 92 in the event of a fire. A piston 93 for shutting off the extinguishing agent gas introduced from the extinguishing agent gas introduction pipe 91 and the stored water is provided so as to be able to be smoothly discharged. Note that a flexible film such as a rubber film may be used instead of the piston 93.

This combined gas / water fire extinguishing system
The container valve 2 and the selection valve 5 of the fire extinguisher storage container 1 are manually or automatically operated by automatic operation such as interlocking with a fire alarm device or a fire alarm using appropriate electric or mechanical means.
By opening -1, 5-2 and 5-3, the fire extinguishing agent gas is supplied from the fire extinguishing agent storage container 1 to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the main pipes 6-1 to 6-2 and 6 to 6. -3, the pipe is sent to the nozzle 8 via the branch pipe 7 and the branch pipe 11, and the fire extinguishing agent gas is selectively discharged from the nozzle 8 into the fire extinguishing sections R1, R2, R3. At this time, the gas flow of the fire extinguishing agent gas flowing through the branch pipe 11 acts as a water suction force on the water tank 9 through the discharge pipe 92, and the water stored in the water tank 9 is discharged through the discharge pipe 92. Then, it is introduced into the branch pipe 11, is put on the gas flow of the fire extinguishing agent gas, and is selectively sprayed from the nozzle 8 arranged on the branch pipe 11 into the fire extinguishing target sections R1, R2, R3.

As described above, in this embodiment, the fire extinguishing agent gas flow is used to make the fire extinguishing target sections R1, R2, R
3, water can be sprayed, and in the equipment for spraying water, the water discharging means (drive source) and the water spray nozzle 10 can be omitted.

FIG. 4 shows a fourth embodiment of the combined gas / water fire extinguishing system of the present invention. In the present embodiment, a water tank 9 which is pressurized and filled with nitrogen gas or the like and which is opened to the atmosphere is installed in an appropriate place of the fire extinguishing equipment, and the water tank 9 is connected to the selection valves 5-1 and 5--1. 2, 5-3 connected to main pipes 6-1, 6-2, 6-3 via a discharge pipe 92 provided with water discharge selection valves 94-1, 94-2, 94-3, Through the main pipes 6-1, 6-2, 6-3 and the branch pipe 7, the nozzles 8 arranged in the branch pipe 7 emit fire extinguishing sections R1, R2, R.
Spray the water into 3.

This combined gas / water fire extinguishing system
The container valve 2 and the selection valve 5 of the fire extinguisher storage container 1 are manually or automatically operated by automatic operation such as interlocking with a fire alarm device or a fire alarm using appropriate electric or mechanical means.
By opening -1, 5-2 and 5-3, the fire extinguishing agent gas is supplied from the fire extinguishing agent storage container 1 to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the main pipes 6-1 to 6-2 and 6 to 6. -3 and the branch pipe 7 to the nozzle 8, and from the nozzle 8 to the fire extinguishing section R1,
Fire extinguishing agent gas is selectively released into R2 and R3. At this time, the water discharge selection valves 94-1, 94-2, and 94-3 linked with the selection valves 5-1, 5-2, and 5-3 are opened, and the main pipes 6-1 and 6-2 are opened. The gas flow of the extinguishing agent gas flowing through the water tank 9 through the discharge pipe 92
(When the accumulator type water tank 9 is used, the pressurized gas such as nitrogen gas filled in the accumulator type water tank 9 also collects water into the water tank 9). The water stored in the water tank 9 is supplied through the discharge pipe 92 to the main pipes 6-1, 6-2, 6-3.
To the main pipe 6-
Through nozzles 1, 6-2, 6-3 and branch pipe 7, nozzles 8 arranged in branch pipe 7 are selectively sprayed into fire extinguishing target sections R 1, R 2, R 3.

As described above, in the present embodiment, the fire extinguisher gas flows are used to extinguish the fire extinguishing target compartments R1, R2, R
Water can be sprayed into the apparatus 3, and in a facility for spraying water, a water discharging means (drive source), a water spray nozzle 10, and a pipe for supplying water can be omitted.

In this case, the water tank 9 is connected to the selection valve 5-
1,5-2,5-3 and water discharge selection valve 94-1,
The discharge pipe 92 is directly connected to the collecting pipe 4 instead of being connected to the main pipes 6-1, 6-2, and 6-3 via the discharge pipe 92 provided with 94-2 and 94-3. Therefore, the water discharge selection valves 94-1, 94-2, and 94-3 can be omitted.

In addition to the water tank 9 shown in the fourth embodiment, in addition to the one shown in FIG.
As in the first modified example of the fourth embodiment shown in FIG. 9A, a pump 95 is attached to the water tank 9 via an introduction pipe 91, and the inside of the water tank 9 is pressurized by the pump 95. As shown in FIG. 5B, a pump 95 is provided in a discharge pipe 92 and is stored in a water tank 9. Water that is directly sent out by the pump 95 can be adopted.

FIG. 6 shows a fifth embodiment of the combined gas / water fire extinguishing system of the present invention. In the present embodiment, water is stored in the fire extinguisher storage container 1, and the discharge pipe 92, the container valve 2,
Through the connecting pipe 3, the collecting pipe 4, the main pipes 6-1, 6-2, 6-3, and the branch pipe 7, water flows from the nozzle 8 disposed on the branch pipe 7 into the fire extinguishing target sections R1, R2, and R3. Spray.

This gas / water combined fire extinguishing system
The container valve 2 and the selection valve 5 of the fire extinguisher storage container 1 are manually or automatically operated by automatic operation such as interlocking with a fire alarm device or a fire alarm using appropriate electric or mechanical means.
By opening -1, 5-2 and 5-3, the fire extinguishing agent gas is supplied from the fire extinguishing agent storage container 1 to the container valve 2, the connecting pipe 3, the collecting pipe 4, and the main pipes 6-1 to 6-2 and 6 to 6. -3 and the branch pipe 7 to the nozzle 8, and from the nozzle 8 to the fire extinguishing section R1,
Fire extinguishing agent gas is selectively released into R2 and R3. At this time, the gas pressure of the fire-extinguishing agent gas in the fire-extinguishing agent storage container 1 acts as a pushing force of water, and the water stored in the fire-extinguishing agent storage container 1 is discharged into the discharge pipe 92, the container valve 2, and the connection pipe 3.
To the collecting pipe 4, and put on the gas flow of the fire extinguishing agent gas to collect the collecting pipe 4, pipes 6-1, 6-2, 6-3 and branch pipe 7
Through the nozzles 8 arranged in the branch pipe 7 to selectively spray into the fire extinguishing target sections R1, R2, R3.

As described above, in this embodiment, the fire extinguishing target section R is utilized by utilizing the gas pressure and the gas flow of the fire extinguishing agent gas.
1, R2, and R3 can be sprayed with water, and in a facility for spraying water, a water discharging means (drive source), a water spray nozzle 10, a pipe for supplying water, and a water tank 9 are omitted. be able to.

[0037]

According to the gas / water combined fire extinguishing system of the present invention, the combustion material can be cooled by the sprayed water.
As a result, the design concentration of the fire extinguishing agent gas in the fire extinguishing target compartment at the time of fire extinguishing can be reduced, the amount of fire extinguishing agent gas required for extinguishing the fire extinguishing target compartment of the same volume can be reduced, and the amount of fire extinguishing target compartment can be reduced. If one person is present, the fire can be extinguished safely, and in addition to using a fire extinguisher gas,
The amount of water spray required for fire extinguishing is much smaller than that of water-based fire extinguishing equipment, and in addition to the advantage that there is less risk of indirect damage such as water damage, such as impairing electrical insulation, Gas pressure or gas flow of fire extinguisher gas,
Alternatively, water is sprayed into the fire extinguisher compartment by using both of them, so a part of the two systems of equipment for discharging the fire extinguishing agent gas and for spraying the water is used. It can be used in common, the number of parts required for fire extinguishing equipment can be reduced, the construction cost of equipment can be reduced, and maintenance and inspection of fire extinguishing equipment is easier, and equipment reliability is improved However, it can be more easily applied to existing fire extinguishing equipment. In addition, this gas / water combined fire extinguishing system can use the gas pressure and / or gas flow of the extinguishing agent gas to diffuse the sprayed water particles. It can be uniformly diffused in the target compartment, and the fire extinguishing efficiency can be improved.

[Brief description of the drawings]

1A and 1B show a first embodiment of a combined gas and water fire extinguishing system of the present invention, wherein FIG. 1A is an overall explanatory view and FIG. 1B is a detailed view of a part A of FIG.

FIGS. 2A and 2B show a second embodiment of the combined gas and water fire extinguishing system of the present invention, wherein FIG. 2A is an overall explanatory view and FIG. 2B is a detailed view of a portion B of FIG.

3A and 3B show a third embodiment of the combined gas / water fire extinguishing system of the present invention, wherein FIG. 3A is an overall explanatory view and FIG. 3B is a detailed view of a portion C of FIG.

FIG. 4 is an overall explanatory view of a fourth embodiment of the combined gas / water fire extinguishing system of the present invention.

FIG. 5 shows a modification of the fourth embodiment of the combined gas and water fire extinguishing system of the present invention, wherein (A) is an overall explanatory diagram of the first modification,
(B) is an explanatory view of a main part of a second modified example.

FIG. 6 is an overall explanatory view of a fifth embodiment of the combined gas / water fire extinguishing system of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fire extinguishing agent storage container 7 injection head 8 nozzle (water spray nozzle) 9 water tank 91 introduction pipe 92 discharge pipe 10 water spray nozzle R1, R2, R3 fire extinguishing target section

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasushi Inoue 1209-634, 6-1-1, Inami-cho, Kako-gun, Hyogo (72) Inventor Ryuta Sakai 6-1 Komoike-jikaido B-805F, Konoike-jikaido, Itami-shi, Hyogo Prefecture Terms (reference) 2E189 BA04 BA07 KB04 4F033 QA06 QB02Y QB08X QB13Y QB15X QD04 QD11 QE20 QE21 QF02Y QF07Y QF15Y

Claims (4)

[Claims] 1. A gas / water combined fire extinguishing system in which a fire extinguishing agent gas is discharged into a fire extinguishing target compartment and the water is sprayed to extinguish the fire. By using the inside of the fire extinguishing area,
A combined gas and water fire extinguishing system characterized by spraying water. 2. The combined gas / water fire extinguishing system according to claim 1, wherein a nozzle for discharging the fire extinguishing agent gas and a nozzle for spraying water are used in common. 3. A pipe for supplying a fire extinguishing agent gas and a pipe for supplying water are shared.
The combined gas / water fire extinguishing system described. 4. The combined gas / water fire extinguishing system according to claim 3, wherein a storage container for storing the fire extinguishing agent gas and a storage container for storing water are commonly used.