Water discharge facility

Abstract

To provide a water discharge facility capable of protecting a tunnel body by effectively utilizing a water distribution system for a fire hydrant facility in a medium-sized tunnel provided with the fire hydrant facility but not provided with a water spray facility.SOLUTION: A water discharge facility 1 includes a fire-fighting water discharge pipe 27 for receiving water supply from a water distribution pipe for supplying fire-fighting water to a fire hydrant device 7 and discharging the fire-fighting water, an opening / closing device 29 provided in a flow passage of the fire-fighting water of the fire-fighting water discharge pipe 27 and opening / closing the flow passage, and a remote control function part remotely controlling opening / closing of the opening / closing device 29 based on occurrence of a fire and non-use of the fire hydrant device.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a water discharge system for cooling and protecting a tunnel body in the event of a fire. [Background technology]

[0002] 2. Description of the Related Art Conventionally, tunnels for motorways and the like are provided with emergency equipment according to the tunnel class. Figure 12 shows a graph showing the tunnel classification, and Table 1 shows the emergency equipment for each tunnel classification. Figure 12 and Table 1 are taken from "Revision of the Standards for Installing Emergency Facilities in Road Tunnels" (March 29, 2019, Ministry of Land, Infrastructure, Transport and Tourism).

[0003] [Table 1]

[0004] As shown in Figure 12, tunnels are classified into five levels (from AA to D) depending on their length and traffic volume. In addition, the installation of emergency equipment as shown in Table 1 is mandatory for each tunnel level.

[0005] Fire hydrant facilities, which are one type of emergency equipment, are water discharge facilities intended for road users to extinguish fires in the early stages, and are always installed in AA and A class tunnels. In these tunnels, road users can pull out a hose from inside the housing of a fire hydrant installed on the side wall of the tunnel and operate the activation lever to carry out firefighting activities.

[0006] In addition, the water spray equipment, which is one of the emergency equipment, is a water spraying system intended to suppress fires and protect the tunnel body from the heat of the fire. In the event of a fire, fine particles of water are sprayed from water spray nozzles installed above the tunnel side walls to cool and protect the tunnel body and prevent the fire from spreading or expanding (see Patent Document 1). As shown in Table 1, water spraying equipment is required for AA-class tunnels, but not for A-class tunnels. Therefore, there are currently many Class A tunnels that have fire hydrant facilities but no water spray facilities. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2002-355324 Summary of the Invention [Problem to be solved by the invention]

[0008] Tunnels equipped with fire hydrants and water spraying equipment are also equipped with water tanks and pumps to supply fire-fighting water to these facilities, and the tanks are constantly filled with water. However, in actual fire scenes, road users prioritize evacuation to ensure their own safety, and so firefighting activities using fire hydrant facilities are rare.

[0009] In the case of AA-class tunnels equipped with water spray equipment, when a fire breaks out, water is sprayed from the water spray equipment by remote control, so even if initial fire extinguishing using fire hydrant equipment is not carried out, the spread of the fire and damage to the tunnel structure are suppressed.

[0010] On the other hand, in the case of Class A tunnels that are not equipped with water spray equipment, if initial fire extinguishing is not carried out using fire hydrant equipment, the fire may spread by the time the fire department arrives and begins full-scale fire extinguishing, and the damage to the tunnel structure may also be significant. As described above, in Class A tunnels (medium-sized tunnels) that are equipped with fire hydrants but no water spraying equipment, there is a problem in that although they are equipped with water distribution systems such as water tanks and pumping equipment, these are not being used effectively.

[0011] The present invention has been made to solve the above-mentioned problems, and aims to provide a water discharge system that can protect the tunnel body by effectively utilizing the water distribution system for the fire hydrant equipment in medium-sized tunnels that are equipped with fire hydrant equipment but not water spray equipment. [Means for solving the problem]

[0012] (1) The water discharge equipment according to the present invention comprises: a fire water discharge pipe that receives water from a water distribution pipe for supplying fire water to a fire hydrant device and discharges fire water; an opening and closing device provided in a flow path of the fire extinguishing water discharge pipe for opening and closing the flow path; and a remote control function unit that remotely controls the opening and closing device to open based on the occurrence of a fire and the fact that the fire hydrant device is not in use.

[0013] (2) The water discharge equipment according to the present invention is installed in a medium-sized tunnel that is equipped with a fire hydrant and does not have the water spray equipment that is installed in a large-sized tunnel, and is intended to cool and protect the tunnel body in the event of a fire, a fire water discharge pipe branching from a water distribution main pipe for supplying fire water to the fire hydrant device and discharging fire water toward the tunnel body; an opening and closing device provided in a flow path of the fire extinguishing water discharge pipe for opening and closing the flow path; and a remote control function unit that remotely controls the opening and closing device based on receiving a fire alarm signal notifying that a fire has occurred and not receiving a hydrant in use signal notifying that the hydrant valve of the hydrant device is open.

[0014] (3) Furthermore, in the device described in (2) above, the remote control function unit is characterized in that after opening the opening / closing device, it closes the opening / closing device when it receives the fire hydrant in use signal.

[0015] (4) Furthermore, in the above (2) or (3), the fire alarm signal is a signal that is transmitted when a fire is recognized based on the image of a camera installed in the medium-sized tunnel. [Effects of the Invention]

[0016] The water discharge equipment of the present invention is equipped with a fire water discharge pipe that receives water from a distribution pipe for a fire hydrant and discharges fire water, an opening and closing device that opens and closes the flow path of fire water to the fire water discharge pipe, and a remote control function unit that remotely controls the opening and closing of the opening and closing device.As a result, it is possible to protect the tunnel body from the heat of a fire by utilizing the water distribution system of the fire hydrant equipment that has traditionally been installed in medium-sized tunnels. Furthermore, since water is not discharged from the fire water discharge pipe when the fire hydrant device is in use, there is no risk of insufficient water discharge pressure on the fire hydrant device side, and the initial fire extinguishing activities using the fire hydrant device are not hindered. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is an explanatory diagram of a water discharge facility according to an embodiment. [Figure 2] FIG. 4 is an axial cross-sectional view (corresponding to the BB cross-sectional view in FIG. 3) of a tunnel in which a fire extinguishing water discharge pipe is installed, and is a diagram illustrating the installation position of the fire extinguishing water discharge pipe. [Figure 3] FIG. 3 is a cross-sectional view (corresponding to the AA cross-section in FIG. 2) of a tunnel in which a fire extinguishing water discharge pipe is installed, illustrating the water discharge direction of the fire extinguishing water discharge pipe. [Figure 4] FIG. 1 is an explanatory diagram of a fire extinguishing water discharge pipe. [Figure 5] FIG. 1 is an explanatory diagram of another aspect of a fire extinguishing water discharge pipe (part 1). [Figure 6] FIG. 2 is an explanatory diagram of another aspect of the fire extinguishing water discharge pipe (part 2). [Figure 7] FIG. 7 is a diagram showing multiple directions when the fire extinguishing water discharge pipes of FIGS. 5 and 6 are used. [Figure 8] FIG. 1 is a plan view of a tunnel equipped with fire extinguishing water discharge pipes, illustrating Example 1 of the arrangement of fire extinguishing water discharge pipes. [Figure 9] FIG. 10 is a diagram illustrating a second example of arrangement of fire extinguishing water discharge pipes. [Figure 10] FIG. 10 is a diagram illustrating Example 3 of the arrangement of fire extinguishing water discharge pipes. [Figure 11] 10A and 10B are diagrams showing another aspect of the water discharge equipment according to the embodiment. [Figure 12] 1 is a graph showing tunnel classification. DETAILED DESCRIPTION OF THE INVENTION

[0018] The water discharge system 1 according to one embodiment of the present invention discharges water by utilizing the water distribution system of a fire hydrant system 3 installed in a medium-sized tunnel (class A tunnel). In the following, first, a water distribution system of a fire hydrant facility 3 conventionally installed in a medium-sized tunnel will be described, and then the water discharge facility 1 of this embodiment that utilizes this system will be described.

[0019] FIG. 1 is a block diagram showing the configuration of a fire hydrant facility 3 conventionally installed in a medium-sized tunnel and a water discharge facility 1 according to this embodiment. 1, the solid lines connecting the components indicate the water distribution system (water distribution pipes), and the dashed lines indicate the electrical system (signal lines). Also, the dashed frames indicate the installation locations of each component. 2 and 3 are axial and widthwise cross-sectional views of tunnel 5, which is an A-class tunnel, and correspond to the AA and BB cross-sectional views of each other.

[0020] <Fire hydrant facilities> As shown in FIG. 1, the fire hydrant facility 3 includes a fire hydrant device 7, a water distribution main 9, a water tank 11, a fire pump 13, and a fire pump control panel 15. The fire hydrant device 3 and the fire pump control panel 15 are connected to a disaster prevention receiving panel 17 that monitors and controls each emergency facility, and are capable of sending and receiving signals to and from the disaster prevention receiving panel 17.

[0021] As shown in FIG. 2, a guard passage 21 is constructed on the shoulder of the roadway 19 of the tunnel 5, and a fire hydrant device 7 is provided on the tunnel side wall on the side where the guard passage 21 is provided. A plurality of fire hydrant devices 7 are installed at predetermined intervals in the tunnel axis direction. Reference numeral 23 denotes a handrail installed on the road surface of the guard passage 21. Moreover, the above is just one example, and there are cases where an inspection path (inspection corridor) is provided instead of the monitor passage 21.

[0022] The housing of the fire hydrant device 7 contains a fire hose, a fire hydrant valve, an operating lever, and the like. In the event of a fire, water can be sprayed from the fire hose by pulling out the fire hose from inside the housing and operating the operating lever to open the fire hydrant valve. The fire hydrant device 7 transmits a fire hydrant in-use signal to the disaster prevention receiving panel 17 while water is being discharged from the fire hose, i.e., while the fire hydrant valve is open.

[0023] In addition, a push-button reporting device 25 is provided on the housing of the fire hydrant device 7. By pressing the button on the push-button reporting device 25, a fire alarm signal (also called a fire signal) is transmitted to the disaster prevention receiving panel 17.

[0024] The fire alarm signal is not limited to being emitted from the push-button notification device 25, but may also be emitted from a fire detector installed inside the tunnel 5. In addition, if a surveillance camera is installed inside the tunnel 5 and a monitor watching the camera footage discovers a fire, a fire alarm signal may be issued from a disaster prevention center where the monitor is located. Furthermore, when a fire is automatically detected by processing images from a surveillance camera, a fire alarm signal may be issued from the image processing device.

[0025] Although not shown in FIG. 3, a space is provided below the guard passage 21, and the water distribution main pipe 9 is provided so as to extend in the tunnel axial direction. The main water distribution pipe 9 is a water distribution pipe for supplying fire water to each fire hydrant device 7 within the tunnel 5, and is connected to a fire pump 13 installed in a pump room near the tunnel entrance. Each fire hydrant device 7 is connected to the main water distribution pipe 7 via a water distribution pipe (riser pipe) (not shown) that branches off from the main water distribution pipe 9 and rises. The main water distribution pipe 9 and the water distribution pipe connecting the main water distribution pipe 9 to the fire hydrant device 7 are always filled with fire water.

[0026] The fire pump 13 is connected to a water tank 11 installed outside the tunnel, and pressurizes the fire water drawn from the water tank 11 to a predetermined pressure and sends it to the main water distribution pipe 9. The water tank 11 is composed of a main water tank, a priming tank (priming device), a water intake tank, etc., and always stores a predetermined amount of fire extinguishing water.

[0027] The fire pump control panel 15 and the disaster prevention receiving panel 17 are installed in an electrical room located near the tunnel entrance. When the disaster prevention receiving panel 17 receives a fire alarm signal, it transmits a signal to the fire pump control panel 15, and the fire pump control panel 15 starts the fire pump 13 based on the signal.

[0028] In the conventional fire hydrant equipment 3 configured as described above, when a fire alarm signal is transmitted from a push-button notification device 25 or the like, the disaster prevention receiving panel 17 receives the signal and starts the fire pump 13 via the fire pump control panel 15. When the fire pump 13 is started, the fire water stored in the water tank 11 is sent to the water distribution main 9. When a road user or the like operates the operating lever of the fire hydrant device 7, the fire hydrant valve opens and fire water is discharged from the fire hose.

[0029] The aforementioned tunnel classification (see Figure 12) classifies tunnels based on factors such as traffic volume, and serves as an indicator of the size of the tunnel. However, in addition to this, a "tunnel disaster prevention classification" is also used as an indicator of the disaster prevention functions that a tunnel has. The disaster prevention receiving panel 17 is classified into tunnel disaster prevention grades according to the implementation form of the functions.

[0030] There are four levels of tunnel disaster prevention grades, from AA to C. For example, a disaster prevention receiving panel equipped with the control function of water spray equipment and the monitoring function of fire hydrant equipment is classified as tunnel disaster prevention grade AA. Therefore, large-scale tunnels (tunnels with tunnel classification AA) that are equipped with water spraying equipment are equipped with disaster prevention receiving panels with tunnel disaster prevention classification AA.

[0031] In addition, disaster prevention receiving panels that do not have a control function for water spray equipment but have a monitoring function for fire hydrant equipment are classified as tunnel disaster prevention grades A or B. Whether they are classified as grade A or B depends on whether they have a monitoring and control function for other equipment (such as fire detectors). Therefore, the medium-sized tunnels targeted by this invention, i.e., tunnels of tunnel class A that are not equipped with water spray equipment, are equipped with disaster prevention receiving panels of tunnel disaster prevention class A or B.

[0032] The medium-sized tunnels covered by this invention are tunnels of tunnel class A that are not equipped with water spray equipment, in other words, tunnels of tunnel disaster prevention class A or B (tunnels equipped with tunnel disaster prevention receiving panels of tunnel disaster prevention class A or B).

[0033] The water discharge equipment 1 of this embodiment utilizes a water distribution system for a fire hydrant device 7 installed in the tunnel 5, which is a medium-sized tunnel as described above, to cool and protect the tunnel body in the event of a fire, and specifically has the following configuration. As shown in FIG. 1, the water discharge system 1 includes a fire extinguishing water discharge pipe 27 installed in the tunnel 5, an opening and closing device 29, and a remote control device 31 installed in a control room in a remote location (such as a disaster prevention center).

[0034] <Firefighting water discharge pipe> The fire extinguishing water discharge pipe 27 is a pipe branched off from the main water distribution pipe 9, and as shown in FIGS. 2 and 3, is installed above the tunnel side wall so as to extend in the tunnel axial direction.

[0035] The fire extinguishing water discharge pipe 27 will be described with reference to FIG. FIG. 4(a) is a front view of the water discharge hole 33 formed in the fire extinguishing water discharge pipe 27, and FIG. 4(b) is a top view of FIG. 4(a). As shown in Figures 4(a) and 4(b), a number of discharge holes 33 are provided in the axial direction on the peripheral wall of the fire extinguishing water discharge pipe 27, and when fire extinguishing water flows into the fire extinguishing water discharge pipe 27, the fire extinguishing water is discharged from each discharge hole 33. As shown in the enlarged view of FIG. 3, the fire extinguishing water discharge pipe 27 is installed so that the discharge hole 33 faces the tunnel wall surface so that the fire extinguishing water is discharged toward the tunnel body.

[0036] Fig. 4 shows an example in which the water discharge holes 33 are arranged in a row, and water is discharged in one direction (see the enlarged view of Fig. 3), but in another embodiment, the water discharge holes 33 may be arranged in multiple rows so that water is discharged in multiple directions. Such examples are shown in Figs. 5 and 6.

[0037] 5 and 6 show an example in which the water discharge holes 33 are provided in three rows in the axial direction of the fire extinguishing water discharge pipe 27. When the water discharge holes 33 are provided in multiple rows, the positions of the water discharge holes 33 in each row may be aligned in the axial direction as shown in Fig. 5, or may be shifted in the axial direction as shown in Fig. 6. By providing the water discharge holes 33 in three rows as shown in FIGS. 5 and 6, fire extinguishing water can be discharged in three directions as shown in FIG. The above is just one example, and the method of providing the water discharge holes 33 can be determined as appropriate, but the water discharge holes 33 should be provided at least in a position facing the tunnel body.

[0038] In addition, the water distribution system for the fire hydrant device 7 installed in the medium-sized tunnel is only designed to discharge water from the fire hydrant device 7, and there is a limit to the water supply capacity of the water tank 11 and the fire pump 13. Therefore, if the diameter of the water discharge holes 33 is too large or if there are too many water discharge holes 33, a sufficient water discharge distance cannot be obtained, and a sufficient cooling effect may not be obtained. Therefore, it is desirable to design the diameter and number of the discharge holes 33 provided in the fire extinguishing water discharge pipe 27 taking into consideration the water supply capacity of the existing water distribution system.

[0039] Furthermore, the fire extinguishing water discharge pipe 27 may be installed near the tunnel body, and there are no specific limitations on its location, but it is more preferable to install it above the tunnel 5, as shown in Figures 2 and 3. It is known that in the event of a fire, there is a significant temperature rise in the area from the road surface to a height of 3 to 6 meters (ceiling), and damage to the tunnel body is likely to be severe in this area. Therefore, by installing fire water discharge pipes 27 at a height of 3 meters or more above the road surface and discharging water toward the upper walls and ceiling, the tunnel body can be cooled effectively.

[0040] <Switchgear> The opening and closing device 29 is provided in the flow path of the fire extinguishing water in the fire extinguishing water discharge pipe 27 to open and close the flow path. The opening and closing device 29 is configured so that it can be remotely controlled to open and close, and may be, for example, an electrically operated valve.

[0041] In FIG. 1, the opening and closing device 29 is installed inside the tunnel 5, but the opening and closing device 29 may be installed outside the tunnel 5. For example, if the connection between the fire water discharge pipe 27 and the main water distribution pipe 9 is located outside the tunnel 5, the opening and closing device 29 may be installed outside the tunnel 5.

[0042] <Remote control device> The remote control device 31 is a device capable of transmitting and receiving signals to and from the disaster prevention receiving panel 17. The remote control device 31 functions as a remote control function unit of the present invention, and can remotely control the opening and closing of the opening and closing device 29 via the disaster prevention receiving panel 17. The fire alarm signal transmitted from the push-button notification device 25, etc., and the fire hydrant in-use signal transmitted from the fire hydrant device 7 are also transmitted to the remote control device 31 via the disaster prevention receiving panel 17, and the remote control device 31 controls the opening and closing of the opening and closing device 29 based on whether or not these signals are received.

[0043] Specifically, the remote control device 31 opens the opening / closing device 29 when it receives a fire alarm signal and does not receive a fire hydrant in-use signal. Furthermore, when the remote control device 31 receives a fire hydrant in-use signal after opening the opening / closing device 29, it closes the opening / closing device 29. In addition, the remote control device 31 may be configured to immediately open the opening / closing device 29 if it has not received a fire hydrant in-use signal at the time it receives a fire alarm signal, or to open the opening / closing device 29 if it has not received a fire hydrant in-use signal even after a predetermined time has passed since it received the fire alarm signal.

[0044] As described above, in this embodiment, when water is being discharged from the fire hydrant device 7, water is not discharged from the fire water discharge pipe 27, so the water discharge pressure of the fire hydrant device 7 is not reduced by simultaneous water discharge. Therefore, even if the water discharge equipment 1 is installed in a medium-sized tunnel with limited water supply capacity, it will not hinder the initial fire extinguishing activities by the fire hydrant device 7.

[0045] 8 is a diagram showing the arrangement of the fire extinguishing water discharge pipes 27 as seen from above the tunnel. The arrows in the figure indicate the direction of water discharge from the fire extinguishing water discharge pipes 27. As shown in FIG. 8, a single fire extinguishing water discharge pipe 27 may be installed over the entire length of the tunnel 5, or the fire extinguishing water discharge pipe 27 may be divided into a plurality of pipes depending on the tunnel length. In addition, when the fire extinguishing water discharge pipe 27 is divided into multiple pipes, each fire extinguishing water discharge pipe 27 should be connected to the main water distribution pipe 9, and each fire extinguishing water discharge pipe 27 should be provided with an opening and closing device 29.

[0046] In addition, when the fire extinguishing water discharge pipe 27 is divided into a plurality of pipes, only the opening / closing device 29 in the vicinity of the push-button type notification device 25 that has transmitted the fire alarm signal may be opened. This reduces the amount of water discharged from the fire extinguishing water discharge pipe 27, making it suitable for cases where the water supply capacity of the existing water distribution system is not high.

[0047] Other examples of the arrangement of the fire extinguishing water pipes 31 are shown in FIGS. Figures 9 and 10(a) show the arrangement of the fire extinguishing water discharge pipes 27 when viewed in the longitudinal direction of the tunnel, and (b) shows the arrangement of the fire extinguishing water discharge pipes 27 when viewed from above the tunnel. The arrangement example in FIG. 9 is an example in which a fire extinguishing water discharge pipe 27 is also provided near the ceiling surface of the tunnel 5. The fire extinguishing water discharge pipe 27 in Figure 9 is composed of a pipe installed near the upper part of one wall surface of the tunnel 5 and extending in the direction of the tunnel axis, and a pipe installed near the ceiling of the tunnel 5 and extending in an arch shape along the ceiling surface. A plurality of arch-shaped pipes are installed at predetermined intervals in the direction of the tunnel axis, and each is connected to a pipe extending in the direction of the tunnel axis.

[0048] The example of arrangement in FIG. 10 is an example in which a fire extinguishing water discharge pipe 27 is provided in a serpentine manner between one wall surface and the other wall surface of a tunnel 5. The fire water discharge pipe 27 in Figure 10 is composed of a section located near the upper part of one wall of the tunnel 5 and extending in the direction of the tunnel axis, a section located near the ceiling of the tunnel 5 and extending in an arch shape along the ceiling surface, and a section located near the upper part of the other wall of the tunnel 5 and extending in the direction of the tunnel axis.

[0049] By installing a fire extinguishing water discharge pipe 27 as shown in Figure 9 or Figure 10, fire extinguishing water can be discharged toward the ceiling surface and other wall surfaces, and fire extinguishing water can be discharged over a wide area of ​​the tunnel body. When installing the piping in an arch shape along the ceiling surface, the fire water discharge pipe 27 must be secured with sufficient care to prevent the piping from falling onto the roadway.

[0050] Next, the operation of the water-discharge system 1 of this embodiment configured as described above will be described. When a road user who discovers a fire presses a button on the push-button reporting device 25, a fire alarm signal is transmitted from the push-button reporting device 25 and is received by the disaster prevention receiving panel 17. The disaster prevention receiving panel 17 that receives the fire alarm signal notifies each facility of the fire and also transmits the fire alarm signal to a remote control device 31 installed in a remote location.

[0051] The fire pump control panel 15 receives a signal from the disaster prevention receiving panel 17 and starts the fire pump 13. When the fire pump 13 is started, the fire water stored in the water tank 11 is sent to the water distribution main 9.

[0052] When the remote control device 31 receives the fire alarm signal, it checks whether or not it has received a signal indicating that the hydrant is in use, and if it has not received a signal indicating that the hydrant is in use, it controls the opening and closing device 29 via the disaster prevention receiving panel 17. When the remote control device 31 opens the opening / closing device 29, fire extinguishing water flows through the fire extinguishing water discharge pipe 27 and is discharged from the discharge hole 33 toward the tunnel body, thereby cooling the tunnel body and reducing damage caused by the heat of the fire.

[0053] After water discharge from the fire water discharge pipe 27 begins, when the operating lever of the fire hydrant device 7 is operated to open the hydrant valve, the fire hydrant device 7 sends a signal to the disaster prevention receiving panel 17 that the hydrant is in use. When the remote control device 31 receives a fire hydrant in-use signal via the disaster prevention receiving panel 17, the remote control device 31 controls the opening / closing device 29 to close via the disaster prevention receiving panel 17. When the opening and closing device 29 is closed, the discharge of water from the fire water discharge pipe 27 stops, and a specified amount of fire water is supplied to the fire hydrant device 7. As a result, fire water is discharged from the fire hose at a specified water discharge pressure, and firefighting activities are carried out.

[0054] As described above, in this embodiment, the water distribution system of the fire hydrant equipment 3 that has traditionally been installed in medium-sized tunnels can be utilized to protect the tunnel body from the heat of a fire. Furthermore, since the remote control device 31 controls the opening and closing device 29 so that water discharge from the fire hydrant device 7 takes priority over water discharge from the fire water discharge pipe 27, water is not discharged from the fire water discharge pipe 27 when the fire hydrant device 7 is in use. Therefore, there is no situation where the water discharge pressure on the fire hydrant device 7 side is insufficient, and initial firefighting activities are not hindered.

[0055] The above is an example in which the opening / closing device 29 and the remote control device 31 are connected via the disaster prevention receiving panel 17, but the present invention is not limited to this. For example, as shown in the example of Fig. 11, the opening / closing device 29 may be connected to the fire pump control panel 15, and signals may be transmitted and received between the opening / closing device 29 and the remote control device via the disaster prevention receiving panel 17 and the fire pump control panel 15.

[0056] Furthermore, in this embodiment, the remote control device 31 provided at a remote location functions as the remote control function unit of the present invention, but the present invention is not limited to this. For example, the disaster prevention receiving panel 17 may be provided with a function for controlling the opening and closing of the opening / closing device 29 based on whether or not a fire alarm signal and a fire hydrant in-use signal are received, so that the disaster prevention receiving panel 17 functions as the remote control function unit of the present invention. Furthermore, as shown in the example of Figure 11, when the opening and closing device 29 is connected to the fire pump control panel 15, a similar function may be provided in the fire pump control panel 15 so that the fire pump control panel 15 functions as the remote control function unit of the present invention.

[0057] Furthermore, although the above description has been given of an example in which the fire water discharge pipe 27 is provided so as to branch off from the main water distribution pipe 9, the present invention is not limited to this. For example, the fire water discharge pipe 27 may be connected to a distribution pipe that connects the main water distribution pipe 9 to the fire hydrant device 7, specifically, to a distribution pipe (rise pipe) that branches off from the main water distribution pipe 9 and connects to the primary side of the fire hydrant valve, and the fire water may be supplied from that distribution pipe. [Explanation of symbols]

[0058] 1. Water discharge equipment 3. Fire hydrant facilities 5. Tunnel 7. Fire hydrant equipment 9 Water main 11 Aquarium 13 Fire pump 15 Fire pump control panel 17 Disaster prevention receiving panel 19 Roadway 21 Lifeguard Passage 23 Handrail 25 Push-button reporting device 27 Fire water discharge pipe 29 Switchgear 31 Remote Control Device 33 Water discharge hole

Claims

1. a fire water discharge pipe that receives water from a water distribution pipe for supplying fire water to the fire hydrant device and discharges the fire water; an opening and closing device provided in a flow path of the fire extinguishing water discharge pipe for opening and closing the flow path; and a remote control function unit that remotely controls the opening and closing device to open based on the occurrence of a fire and the fact that the fire hydrant device is not in use.

2. This water discharge equipment is installed in medium-sized tunnels that are equipped with fire hydrants and do not have the water spray equipment that is installed in large-scale tunnels, and is used to cool and protect the tunnel body in the event of a fire. a fire water discharge pipe branching from a water distribution main pipe for supplying fire water to the fire hydrant device and discharging fire water toward the tunnel body; an opening and closing device provided in a flow path of the fire extinguishing water discharge pipe for opening and closing the flow path; and a remote control function unit that remotely controls the opening and closing device based on receiving a fire alarm signal notifying that a fire has occurred and not receiving a fire hydrant in use signal notifying that the hydrant valve of the fire hydrant device is open.

3. The water-discharge system according to claim 2, wherein the remote control function unit closes the opening and closing device when the fire hydrant in-use signal is received after the opening and closing device is opened.

4. 4. The water discharge system according to claim 2 or 3, wherein the fire alarm signal is a signal that is transmitted when a fire is recognized based on images from a camera installed inside the medium-sized tunnel.

Images