JP2023027831A - Fire fighting equipment - Google Patents

Abstract

To provide fire fighting equipment capable of extinguishing a fire by discharging a foam solution in a zone where the fire has broken out in a tunnel and preventing spread of the fire by discharging water in adjacent zones.SOLUTION: Fire fighting equipment 1 includes a fire detector 5 provided in each of predetermined zones in a tunnel 3; an automatic valve 9 provided in each of the zones for executing water discharge control for a plurality of water discharge heads 7 provided in each zone; and a control device 11 for controlling the automatic valve 9 on the basis of a fire signal of the fire detector 5. It is possible to switch whether to supply fire fighting water or a foam solution in which the fire fighting water is mixed with a foam stock solution to the water discharge heads 7. The foam solution is supplied to the water discharge heads 7 in a fire detection zone where the fire detector 5 has detected a fire, and water is supplied to the water discharge heads 7 in adjacent zones adjacent to the fire detection zone.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to fire extinguishing equipment for extinguishing and suppressing a fire that breaks out in a tunnel and protecting the tunnel frame from heat.

2. Description of the Related Art Conventionally, water spray equipment is installed in tunnels such as motorways to extinguish and suppress fires that occur in the tunnels and to protect the tunnel frame from the heat of fires. Examples of such water spray equipment for tunnels are disclosed in Patent Documents 1-3.

In tunnel water spray equipment such as Patent Documents 1 to 3, a plurality of water discharge heads (water spray heads) and automatic valves for supplying water to the water discharge heads are provided for each predetermined section in the tunnel. When a fire sensor installed inside detects a fire, water is sprayed from the water discharge head in the same section as the fire sensor that detected the fire or in the corresponding section.

Although the above Patent Documents 1 to 3 are for spraying water in a fire-occurring section, it is more suitable to use a foam aqueous solution in which a foam concentrate is mixed with water in order to suppress and extinguish oil fires caused by gasoline or oil in vehicles. Therefore, a foam-type fire extinguishing system using a foam solution may be installed.

JP 2016-059648 A JP-A-5-184693 JP-A-6-223279

As mentioned above, when a fire breaks out in a tunnel, water is sprayed from the water discharge head in the same section as the fire sensor that detected the fire to extinguish the fire. Therefore, it is preferable to prevent the fire from spreading by spraying water on the sections adjacent to the section where the fire broke out.

On the other hand, there is also a demand for minimizing the release amount of aqueous foam solutions used in foam-type fire extinguishing systems in consideration of the environment. In addition, when the foamy solution is discharged, visibility deteriorates and the road surface becomes slippery, making it difficult to evacuate.

From the above, it can be said that it is suitable to use a foam solution to extinguish a fire and to use water to prevent the spread of a fire.

The present invention has been made to solve such problems, and it is possible to extinguish a fire by discharging a foam solution into a section in which a fire has occurred in a tunnel, and to prevent the spread of fire by discharging water into an adjacent section. The purpose is to provide fire extinguishing equipment that can

(1) The fire extinguishing equipment according to the present invention includes a fire detector provided for each predetermined section in a tunnel, and an automatic fire detector that is provided for each section and performs water discharge control for a plurality of water discharge heads provided for each section. and a control device for controlling the automatic valve based on the fire signal of the fire detector, wherein fire extinguishing water is supplied to the water discharge head or the foam concentrate is mixed with the fire extinguishing water. and supply the foam solution to the water discharge head of the fire detection section where the fire detector has detected a fire, and supply the foam solution to the water discharge head of the adjacent section adjacent to the fire detection section. It is characterized in that it is configured to supply water to the

(2) In addition, the fire extinguishing equipment according to the present invention controls water discharge to a fire detector provided for each predetermined section in the tunnel and a plurality of water discharge heads provided for each section. and a control device for controlling the automatic valve based on the fire signal of the fire detector, wherein fire extinguishing water is supplied to the water discharge head, or foam concentrate is added to the fire extinguishing water. and a fire detection section where the fire detector detects a fire based on wind direction information in the tunnel, and a section adjacent to the fire detection section on the leeward side of the fire detection section. a fire extinguishing target section specifying means for specifying the adjacent section on the side of the fire detecting section as a fire extinguishing target section; and control means for controlling the supply of water to said water discharge heads of compartments.

(3) In addition, in the above (1) or (2), when the fire detector in the adjacent section detects a fire, the supply of water to the water discharge head in the adjacent section is changed to a foam aqueous solution. It is characterized by controlling to switch to supply.

According to the present invention, the fire extinguishing water is supplied to the water discharge head, or the foam aqueous solution obtained by mixing the fire extinguishing water with the foam solution is switchable. can be discharged to extinguish the fire, and water can be discharged to the adjacent compartment to prevent the spread of the fire, enabling proper fire extinguishing with minimal impact on the environment.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing explaining the fire extinguishing equipment which concerns on Embodiment 1 of this invention. It is an explanatory view explaining composition of an automatic valve of fire extinguishing equipment of Drawing 1. It is explanatory drawing explaining the fire extinguishing equipment which concerns on Embodiment 2 of this invention.

[Embodiment 1]
A fire extinguishing system according to Embodiment 1 of the present invention will be described with reference to FIG. FIG. 1 shows part of a tunnel, and is a schematic system diagram of fire extinguishing equipment in the tunnel. The chain double-dashed lines in the figure indicate the boundaries of the sections, and the sections are labeled A to E for distinction.
As shown in FIG. 1, the fire extinguishing equipment 1 of the present embodiment includes a fire detector 5 provided for each predetermined section in the tunnel 3, and a plurality of water discharge heads 7 provided for each section. and a control device 11 for controlling the automatic valve 9 based on the fire signal from the fire detector 5.
Each configuration will be described in detail below.

<Fire detector>
One fire detector 5 is provided for each section, and detects a fire that has occurred in the section. Each fire detector 5 is electrically connected to the control device 11 , and the fire detector 5 that has detected a fire transmits a fire signal to the control device 11 .

<Water discharge head>
A plurality of water discharge heads 7 are provided for each section, and discharge water or a foam solution as a fire extinguishing agent. The radiation range of the fire extinguishing agent (water or foam solution) from the plurality of water discharge heads 7 is slightly wider than the section to be extinguished, and is set so as to overlap with the radiation range of the water discharge heads 7 of adjacent sections ( (see fine dashed line).
The water discharge head 7 is not particularly limited as long as it can discharge both fire extinguishing water (hereinafter also simply referred to as "water") and a foam solution. A substance that can discharge water in the form of an aqueous solution is preferable to a substance that emits water, because the radiation range can be widened.

<Automatic valve>
One automatic valve 9 is provided for each section, and supplies fire extinguishing agent to the plurality of water discharge heads 7 . The automatic valve 9 is configured to be able to switch between supplying fire-extinguishing water as a fire-extinguishing agent to the water discharge head 7 and supplying a foam solution obtained by mixing fire-extinguishing water with a foam solution. Each automatic valve 9 is electrically connected to a control device 11 so that opening/closing control by the control device 11 is possible.
The configuration of the automatic valve 9 will be described in detail below with reference to FIG.

As shown in FIG. 2, the automatic valve 9 of the present embodiment includes a fire extinguishing agent supply line 13 that supplies fire extinguishing agent to the water discharge head 7, and a foam concentrate supply line 15 that supplies the foam concentrate to the fire extinguishing agent supply line 13. , a pressurized water supply line 21 for supplying water for pressurizing and opening the main valve 17 provided in the extinguishing agent supply line 13 and the foam concentrate check valve 19 provided in the foam concentrate supply line 15 .
The above configuration will be described in detail below.

≪Fire extinguishing agent supply line≫
The fire extinguishing agent supply line 13 supplies fire extinguishing agent to a plurality of water discharge heads 7 provided in the same section as the automatic valve 9, and one end supplies fire extinguishing water from a water tank (not shown) that stores fire extinguishing water. The other end is branched and connected to a plurality of water discharge heads 7 (see FIG. 1) in the same section. The extinguishing agent supply line 13 is provided with a pressurized open type main valve 17, and at the time of alarm, the pipe on the primary side of the main valve 17 is filled with water supplied from the water tank. there is

A pressure switch 23 and a secondary pressure regulating pilot valve 25 are provided on the secondary side of the main valve 17 in the extinguishing agent supply line 13 .
The pressure switch 23 detects when the pressure on the secondary side of the main valve 17 in the extinguishing agent supply line 13 reaches a predetermined pressure, and transmits a detection signal to the control device 11. electrically connected.
The secondary pressure adjustment pilot valve 25 detects the pressure on the secondary side of the main valve 17 in the extinguishing agent supply line 13, and adjusts the opening of the main valve 17 according to the detected pressure. The secondary side of the main valve 17 is controlled by the next pressure adjusting pilot valve 25 so as to have a predetermined pressure.

≪Foam concentrate supply line≫
The foam concentrate supply line 15 supplies the foam concentrate to the extinguishing agent supply line 13, and one end thereof is a pressurized water supply device (not shown) for supplying the foam concentrate from a foam concentrate tank (not shown) storing the foam concentrate. , the other end is connected to the secondary side of the main valve 17 in the extinguishing agent supply line 13 . The foam concentrate supply line 15 is provided with a pressurized release type foam concentrate check valve 19, and in the event of an alarm, the primary side pipe of the foam concentrate check valve 19 is designed to prevent the foam concentrate supplied from the foam concentrate tank from flowing out. It is in a full state.

The concentrated foam solution supply line 15 is also provided with a concentrated foam solution drain valve 27 and a concentrated foam solution return valve 29 on the primary side of the concentrated foam solution blocking valve 19 . The concentrated foam solution drain valve 27 and the concentrated foam solution return valve 29 are for discharging the concentrated foam solution in the pipe during maintenance and returning the concentrated foam solution to the pipe after maintenance.
A constant flow rate valve 31 is provided on the secondary side of the foam concentrate blocking valve 19 . The constant flow valve 31 adjusts the flow rate of the foam concentrate to a predetermined flow rate. The flow rate adjusted by the constant flow valve 31 is set in advance based on the total discharge amount of the plurality of water discharge heads 7 .

≪Pressurized water supply line≫
The pressurized water supply line 21 supplies pressurized water for pressurizing and opening the main valve 17 and the foam concentrate blocking valve 19. It has a foam concentrate check valve side pressurized water supply line 21b for supplying pressurized water to the valve 19 .

The main valve-side pressurized water supply line 21a connects the primary side of the main valve 17 and the pressurizing chamber 17a. A valve 33 is provided. The water remote activation valve 33b is electrically connected to the control device 11, and opening/closing control by the control device 11 is possible.
At the time of alarm, the piping on the primary side of the water start valve 33 is in a state of being filled with water supplied from the primary side of the main valve 17, and the manual water start valve 33a is manually opened, or the water remote By remotely opening the activation valve 33b by the control device 11, water is introduced into the pressurization chamber 17a and the main valve 17 is opened.

The foam concentrate check valve side pressurized water supply line 21b connects the primary side of the main valve 17 and the pressurizing chamber 19a of the foam concentrate check valve 19, and the foam concentrate manual start valve 35a and the foam concentrate remote controller are provided in parallel. A foam concentrate starting valve 35 is provided which consists of a starting valve 35b. The foam concentrate remote starting valve 35b is electrically connected to the control device 11, and can be controlled by the control device 11 to open and close.
At the time of alarm, the piping on the primary side of the foam concentrate starting valve 35 is in a state of being filled with water supplied from the primary side of this valve 17, and the foam concentrate manual starting valve 35a is manually opened, or Water is introduced into the pressurizing chamber 19a of the foam concentrate blocking valve 19 by remotely opening the foam concentrate remote actuating valve 35b by the controller 11, and the foam concentrate blocking valve 19 is opened.

The control of the foam concentrate remote starting valve 35b by the control device 11 described above is performed based on the fire signal input from the fire detector 5 and the detection signal input from the pressure switch 23. FIG. Specifically, a fire signal is input from the fire detector 5 in the same section as the automatic valve 9, and the pressure on the secondary side of the main valve 17 in the extinguishing agent supply line 13 from the pressure switch 23 is a predetermined pressure or more. When a detection signal transmitted when a certain thing is detected is input, the foam concentrate remote start valve 35b of the automatic valve 9 can be opened. Therefore, the foam concentrate is supplied to the extinguishing agent supply line 13 only when the main valve 17 is open and water of a predetermined pressure is flowing through the secondary side of the main valve 17, so that only the foam concentrate is supplied to the main valve. There is no outflow to the secondary side of 17 (eg water discharge head 7).

A foam pressure switch 36 is provided on the secondary side of the foam concentrate starting valve 35 in the foam concentrate check valve side pressurized water supply line 21b.
The foam pressure switch 36 detects when the pressure on the secondary side of the foam concentrate starting valve 35 in the foam concentrate blocking valve side pressurized water supply line 21 b reaches a predetermined pressure, and transmits a detection signal to the controller 11 . and is electrically connected to the control device 11 .

<Control device>
The control device 11 is electrically connected to each fire detector 5 and each automatic valve 9 and controls the automatic valve 9 based on the fire signal from the fire detector 5 . Specifically, the automatic valve 9 arranged in the fire detection section where the fire detector 5 detected a fire supplies the foam solution to the water discharge head 7, and the automatic valve 9 arranged in the adjacent section adjacent to the fire detection section. controls to supply water to the water discharge head 7 . The method of the above control will be explained in detail in the following description of operation.

The operation of the fire extinguishing equipment 1 of this embodiment configured as described above will be described with reference to FIG.
As shown in FIG. 1, when a fire breaks out in section C, the fire is detected by the fire detector 5 monitoring section C. FIG. The fire detector 5 that has detected the fire transmits a fire signal to the control device 11 .
When a fire signal is input to the control device 11, the control device 11 controls the automatic valve 9 as follows.

First, the control device 11 opens the water remote activation valve 33b of the automatic valve 9 of section C, which is the fire detection section. In the automatic valve 9 of the section C, water is introduced into the pressurizing chamber 17a of the main valve 17 by opening the water remote activation valve 33b, and the main valve 17 is opened. When the main valve 17 is opened and water flows, the pressure on the secondary side of the main valve 17 rises. When this pressure reaches a predetermined pressure, the pressure switch 23 detects this and transmits a detection signal to the control device 11 .

When the detection signal is input from the pressure switch 23, the controller 11 next opens the foam concentrate remote control valve 35b. By opening the foam concentrate remote control valve 35b, water is introduced into the pressurizing chamber 19a of the foam concentrate check valve 19, and the foam concentrate check valve 19 is opened. When the foam concentrate blocking valve 19 is opened and the foam concentrate is supplied to the water flowing through the extinguishing agent supply line 13, the water and the foam concentrate are mixed to form a foamy aqueous solution, and the foamy aqueous solution is discharged from the water discharge head 7 of the section C. be done.
At this time, the flow rate of the concentrated foam solution supplied to the extinguishing agent supply line 13 is adjusted to a predetermined flow rate by the constant flow rate valve 31 of the concentrated foam solution supply line 15 based on the total discharge amount from the water discharge head 7 .

In addition, the control device 11 opens the water remote activation valves 33b of the compartments B and D adjacent to the compartment C where the fire detector 5 has detected a fire. At this time, the controller 11 receives detection signals from the pressure switches 23 of the sections B and D, but does not receive fire signals from the fire detectors 5 of the sections B and D. 35b remains closed. As a result, water is introduced into the pressurizing chamber 17a of the main valve 17 and the main valve 17 is opened. remains closed.
Therefore, in the automatic valves 9 of the section B and the section D, the foam concentrate is not supplied to the water flowing through the extinguishing agent supply line 13, and the water discharge heads 7 of the section B and the section D discharge water.

As described above, according to the present embodiment, the automatic valve 9 is provided so as to be capable of switching between supplying the fire extinguishing water to the water discharge head 7 and supplying the foam aqueous solution obtained by mixing the fire extinguishing water with the foam solution. As a result, the fire can be extinguished by discharging the foam solution to the section where the fire has occurred in the tunnel 3, and water can be discharged to the adjacent section to prevent the spread of the fire, thereby minimizing the impact on the environment. appropriate fire extinguishing is possible.

However, even if water is discharged to adjacent compartments as described above, the fire may spread. In such a case, it is preferable to control the automatic valve 9 so as to switch the supply of water to the water discharge head 7 of the automatic valve 9 in the adjacent section to the supply of the aqueous foam solution. Specifically, when the fire detector 5 of the adjacent section D, which is discharging water, detects a fire, the automatic valve 9 of the section D is controlled to open the foam concentrate remote start valve 35b. good. The adjacent section has already discharged water, and the pressure switch 23 detects an increase in the secondary pressure. Since it becomes an aqueous solution, it can appropriately cope with the extinguishing of an expanded fire. Also, at this time, the section E adjacent to the section D, which has newly become the fire detection section, may be set as a new adjacent section, and the automatic valve 9 may be opened to release water.

On the other hand, in consideration of the impact on the environment, it is conceivable to use only one section for releasing bubbles at the same time. In this case, when the force of fire moves to the adjacent section, the foam releasing section is switched. In order to carry out this operation, it is sufficient to add that the foam pressure switches 36 of all sections are OFF (no pressure rise is detected) as a condition for opening the foam concentrate remote start valve 35b. That is, the conditions for opening the foam concentrate remote control valve 35b are that detection signals are input from the fire sensor 5 and the pressure switch 23, and that the foam pressure switches 36 in all sections are OFF. Control in this case is performed as follows.

For example, when a fire breaks out in section C and then moves to the adjacent section D, a detection signal is input to the control device 11 from the fire detector 5 and the pressure switch 23 in section D. Since pressurized water is being supplied to the undiluted solution blocking valve 19, the foam pressure switch 36 is ON. Therefore, at this time point, control is performed to close the foam concentrate remote activation valve 35b of the compartment C without opening the foam concentrate remote activation valve 35b of the compartment D. When the supply of pressurized water to the foam concentrate check valve 19 of section C is stopped, the foam pressure switch 36 of section C is turned off, and the foam pressure switches 36 of all sections are turned off. After that, it is preferable to perform control to open the foam concentrate remote control valve 35b in the section D to switch the foam releasing section.

[Embodiment 2]
In the first embodiment, water is discharged into the two sections (section B and section D) adjacent to the fire detection section to prevent the spread of fire. Since fire spreads more easily on the leeward side than on the windward side of a section where a fire occurs, there are cases where a sufficient fire spread prevention effect can be obtained even if water is discharged only to the adjacent section on the leeward side. This embodiment is suitable for such a case, and specifically has the following configuration.

As shown in FIG. 3, the fire extinguishing equipment 37 of the present embodiment includes a fire detector 5 provided for each predetermined section in the tunnel 3, and a plurality of water discharge heads 7 provided for each section. and a control device 39 for controlling the automatic valve 9 based on the fire signal from the fire detector 5.
The tunnel 3 shown in FIG. 3 is provided with an exhaust fan (not shown) for ventilation, and it is assumed that a constant wind always flows in the direction indicated by the arrow in the figure.
Since this embodiment is the same as the first embodiment except for the control of the automatic valve 9 by the control device 39, the same parts in FIG. 3 as those in FIG. The control device 39 of this embodiment will be described below.

<Control device>
The control device 39 is electrically connected to each fire detector 5 and each automatic valve 9, and controls the automatic valve 9 based on the fire signal of the fire detector 5. It is provided with section identification means 41 and automatic valve control means 43 (control means of the present invention) for controlling the automatic valve 9 based on the identification information of the section identification means 41 to be extinguished.

≪Extinguishing Target Section Identification Means≫
Based on the wind direction information in the tunnel 3, the fire extinguishing target section identification means 41 identifies the fire detection section in which the fire detector 5 has detected a fire and the adjacent section on the leeward side of the sections adjacent to the fire detection section as the fire extinguishing target. It is specified as a division.
In this example, as described above, the exhaust fan provided in the tunnel 3 generates a constant wind flow, so wind direction information based on this is preset in the fire extinguisher 39 .
A specific identification method will be described in the description of the operation to be described later.

<<Automatic valve control means>>
The automatic valve control means 43 controls the automatic valve 9 based on the identification information from the section identification means 41 to be extinguished. The automatic valve 9 which supplies the aqueous solution and which is located in the adjacent section on the lee side controls the supply of water to the water discharge head 7 . The method of the above control will be explained in detail in the following description of operation.

The operation of the fire extinguishing equipment 37 of this embodiment configured as described above will be described with reference to FIG.
As shown in FIG. 3, when a fire breaks out in section C, the fire is detected by the fire detector 5 that monitors section C. As shown in FIG. The fire detector 5 that has detected the fire transmits a fire signal to the control device 39 .

The fire extinguishing section identification means 41 of the control device 39 identifies section C as a fire detection section based on the input of this fire signal.
Also, based on preset wind direction information, section D is specified as an adjacent section on the leeward side, out of section B and section D adjacent to section C. FIG. As a result, Section C, which is a fire detection section, and Section D, which is an adjacent section on the leeward side, are specified as sections to be extinguished.

When the section to be extinguished (the fire detection section, the adjacent section on the leeward side) is specified by the section specifying means 41 to be extinguished, the automatic valve control means 43 of the control device 39 starts controlling the automatic valve 9 .
The automatic valve control means 43 controls the automatic valve 9 of the section C to supply the water discharge head 7 of the section C with the aqueous foam solution. Since the control method is the same as the control for the automatic valve 9 in the section C of Embodiment 1, the explanation is omitted. As a result, the foam solution is discharged from the water discharge head 7 of the section C. As shown in FIG.

Next, the automatic valve control means 43 controls the automatic valve 9 of the section D to supply water to the water discharge head 7 of the section D. Since the control method is the same as the control for the automatic valves 9 in the sections B and D of the first embodiment, description thereof will be omitted. As a result, water is discharged from the water discharge head 7 of the section D.

As described above, according to the present embodiment, based on the wind direction information in the tunnel 3, the fire occurrence section and the section adjacent to the leeward side are specified, and the section to release water is limited to the adjacent section on the leeward side. As a result, it is possible to reduce the amount of water used and reduce poor visibility for evacuees while obtaining a certain effect of preventing the spread of fire.

In this embodiment as well, when a fire spreads to an adjacent section on the leeward side where water is being released and the fire sensor 5 in that section detects the fire, an automatic Preferably, the automatic valve 9 is controlled to switch the supply of water to the water discharge head 7 of the valve 9 to the supply of the aqueous foam solution.

In addition, in the present embodiment, the case where the wind always flows in a fixed direction due to the exhaust fan provided in the tunnel 3 was exemplified, but the present invention is not limited to this, and a tunnel not equipped with an exhaust fan can be used. can also be applied.
If the tunnel is not equipped with an exhaust fan and the direction of the wind is not always constant, install an anemometer or the like in the tunnel so that the wind direction information at the time of fire extinguishing is input to the control device 39, and based on this input information to identify the adjacent section on the leeward side. At this time, if the wind speed is less than a predetermined value, it may be determined that there is no wind, and the sections on both sides of the fire detection section may be set as adjacent sections.

The first and second embodiments described above describe examples in which the controllers 11 and 39 control the opening and closing of the water remote activation valve 33b and the foam concentrate remote activation valve 35b based on the input from the fire detector 5. Alternatively, an operator who has visually confirmed the fire can manually open and close the water manual starting valve 33a and the foam concentrate manual starting valve 35a. In this case, too, the fire extinguishing agent suitable for extinguishing the fire and preventing the spread of the fire can be discharged by operating the system so that the foam solution is discharged to the section where the fire occurs and the water is discharged to the adjacent section. Further, when the operator operates the water manual start-up valve 33a and the foam concentrate manual start-up valve 35a in the section where the fire occurs, even if the control units 11 and 39 determine the adjacent section based on the operation information and release the water. good. By doing so, the operator can evacuate after operating the automatic valve 9 in the fire compartment.

Moreover, although the first and second embodiments described above are examples in which the foam concentrate blocking valve 19 is provided as a part of the automatic valve 9, the present invention is not limited to this. For example, the present invention also includes a foam concentrate check valve 19 provided at a position away from the automatic valve 9 and a foam concentrate check valve 19 provided at the outlet of the foam concentrate tank described above. In these cases as well, by opening the foam concentrate check valve 19, the foam concentrate is introduced into the water on the secondary side of the automatic valve 9 in the fire detection compartment, and the foam solution is supplied to the water discharge head in the fire detection compartment. It is recommended that

1 Fire extinguishing equipment (Embodiment 1)
3 tunnel 5 fire detector 7 water discharge head 9 automatic valve 11 control device (first embodiment)
13 fire extinguisher supply line 15 foam concentrate supply line 17 main valve 17a pressurization chamber 19 foam concentrate check valve 19a pressurization chamber 21 pressurized water supply line 21a main valve side pressurized water supply line 21b foam concentrate check valve side pressurized water supply line 23 pressure switch 25 Secondary pressure adjustment pilot valve 27 Foam concentrate drain valve 29 Foam concentrate return valve 31 Constant flow valve 33 Water start valve 33a Water manual start valve 33b Water remote start valve 35 Foam concentrate start valve 35a Foam concentrate manual start valve 35b Foam concentrate remote start Valve 36 Foam pressure switch 37 Fire extinguishing equipment (second embodiment)
39 Control Device (Embodiment 2)
41 fire extinguishing target section identification means 43 automatic valve control means

Claims (3)

A fire detector provided for each predetermined section in the tunnel, an automatic valve provided for each section and performing water discharge control for a plurality of water discharge heads provided for each section, and a fire signal of the fire detector. A fire extinguishing equipment comprising a control device for controlling the automatic valve based on
The water discharge head can be switched between supplying fire-extinguishing water and supplying a foam solution obtained by mixing the fire-extinguishing water with a foam solution, and
wherein the fire detector is configured to supply the aqueous foam solution to the water spray head of the fire detection zone in which the fire is detected and to supply water to the water spray head of an adjacent zone adjacent to the fire detection zone; Fire extinguishing equipment characterized. A fire detector provided for each predetermined section in the tunnel, an automatic valve provided for each section and performing water discharge control for a plurality of water discharge heads provided for each section, and a fire signal of the fire detector. A fire extinguishing equipment comprising a control device for controlling the automatic valve based on
The water discharge head is configured to be switchable between supplying fire-extinguishing water and supplying a foam solution obtained by mixing the fire-extinguishing water with a foam solution,
Fire extinguishing target section identification for specifying, as fire extinguishing target sections, a fire detection section in which the fire detector has detected a fire based on wind direction information in the tunnel and an adjacent section on the leeward side among sections adjacent to the fire detection section. means and
a control means for controlling to supply the aqueous foam solution to the water discharge head of the fire detection section and to supply water to the water discharge head of the adjacent section, based on the identification information of the fire extinguishing target section identification means; Fire extinguishing equipment characterized by having. 3. The method according to claim 1, wherein when the fire detector in the adjacent section detects a fire, the water supply to the water discharge head in the adjacent section is controlled to switch to the supply of the aqueous foam solution. Fire extinguishing equipment.

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