JP2002355324A - Water spraying/scattering equipment for tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inside tunnel water spraying/scattering equipment which enables safety operation thereof within a short time by performing a scattering of water in a smaller flow rate than that of a main scattering of water for advance notice. SOLUTION: There is provided a small flow rate water scattering means which performs a scattering of water in a smaller flow rate than the main scattering of water for advance notice into a water spraying/scattering section corresponding to the position of a fire in the tunnel before the implementing of the main scattering of water. Another small flow rate water scattering means is provided to perform a scattering of water in a smaller flow rate than that of the main scattering of water for advance notice in the on going direction of vehicles ahead of the water spraying/ scattering section corresponding to the position of the fire in the tunnel before the implementing of the main scattering of water. Furthermore, a small flow rate water scattering means is provided to implement a scattering of water for advance notice in a smaller flow rate than the main scattering of water in the on going direction of vehicles ahead of the water spraying/scattering section during the main scattering of water in the water spraying/scattering section corresponding to the position of a fire in the tunnel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water spraying and spraying apparatus for spraying or spraying a fire extinguisher against a fire in a tunnel and extinguishing the fire. Things.

[0002]

2. Description of the Related Art In a tunnel in which a water spraying / spraying facility is installed, when a fire occurs in the tunnel, the facility is started to extinguish or suppress the fire. However, if the facility is started and water is released without prior notice, the water will not be able to secure the visibility of the section, and vehicles passing through the tunnel may cause an accident (single or rear-end collision) or evacuees may evacuate quickly. There is a risk of disappearing.

[0003]

Therefore, in the conventional water spraying and spraying equipment, when the equipment is operated, it is necessary to confirm that the vehicles in the tunnel have stopped and that the evacuees have completed evacuation.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and operates a water spray watering system safely and in a short time by performing advance watering with a smaller flow rate than full-scale watering. It is an object of the present invention to obtain a water spraying and spraying equipment in a tunnel. It is another object of the present invention to obtain a water spraying equipment in a tunnel capable of stopping entry of a passing vehicle into a tunnel by applying notice watering to a tunnel entrance.

[0005]

SUMMARY OF THE INVENTION A water spraying apparatus in a tunnel according to the present invention is provided in a water spraying section corresponding to a fire position in a tunnel. A small flow sprinkler is provided.

[0006] Further, a small flow water sprinkling means is provided at the front side of the water spray water spray section corresponding to the fire position in the tunnel in the vehicle traveling direction, and before the full water sprinkling, a preliminary notice water sprinkling with a smaller flow rate than the full water sprinkling.

[0007] In addition, during the full-scale watering of the water spraying section corresponding to the fire position in the tunnel, a small flow sprinkling means for performing a preliminary spraying with a smaller flow rate than the full-scale watering on the vehicle forward side of the water spraying section is provided. Have.

The notice watering is watering that is periodic with respect to time within the watering area.

[0010] In addition, in advance watering, the closer to the fire spot in the watering area, the stronger the watering and the higher the warning level.

[0010] In addition, in the case of advance notice watering, as the actual watering becomes closer in time within the watering area, watering is strengthened and the degree of warning is increased.

Further, the position where the notice is sprayed is at the entrance of the tunnel.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a diagram for explaining an arrangement state of a tunnel water spraying / spraying facility. 1, in a tunnel 100, a fire detector 2 for detecting a fire, and a plurality of water spray heads 2 provided on one side in the width direction of the tunnel 100 (upper side in FIG. 1) are arranged in the longitudinal direction of the tunnel. And a water distribution main pipe 3 for supplying water to each water spray head 2, and a pump 5 for supplying water from the water tank 4 to the water spray head 2 via the water distribution main pipe 3.

In the present embodiment, the water spray head 2
Is a structure in which, for example, ten (four in the figure, for simplicity) are provided in one water spraying / sprinkling section, and ten pieces operate simultaneously to sufficiently discharge water in a fire in the water spraying / sprinkling section. It has been. One water spray automatic valve 6 for supplying water is provided for two groups of water spray heads provided for each water spray spraying section.

[0014] Two sensors 1 are provided for one water spraying / sprinkling section. When the sensor 1 detects a fire, the signal is transmitted to the control panel 7. And the control panel 7
Performs an operation of opening the automatic valve 6 based on this signal so that water is sprayed to two water spray watering sections of a target water spray watering section and a water spray watering section immediately downstream of the water spray watering section. I do.

FIG. 2 is a view showing the state of notice watering of the water spraying equipment in the tunnel according to the present invention. In the water spraying equipment in the tunnel according to the present invention, prior to the actual full-scale watering, a preliminary notice watering with a smaller flow rate than the full-scale watering is performed in the water spraying and spraying section corresponding to the fire position in the tunnel. While full-scale watering is sprayed over almost the entire area in the width direction of the tunnel, warning watering is watering with a small flow rate. For example, in the example shown in FIG. 2, watering (partially dispersed water) ). This notice watering is a watering with a small flow rate, for example, a watering with a substantially uniform density in the watering area. Further, it is described that fire water can be saved by using partially dispersed water.

Preliminary watering with a small flow rate is realized by reducing the amount of water discharged from the water spray head 2 to less than that of full watering. The following method can be adopted as the small flow watering means for watering the small flow advance notice.

(1) Recirculation Valve System FIG. 3 is a system diagram of a main part for explaining the recirculation valve system. In this method, a return valve 10 for notice watering is added to the water distribution main pipe 3 extending from the pump 5, and the water in the water distribution main pipe 3 is partially recirculated by the reflux valve 10 so that the pressure is largely released and the water distribution main pipe 3 is released. A small amount of notice is sprayed by lowering the pressure. That is, at the time of advance notice watering, the return valve 10 for advance watering is fully opened to weaken water discharge. On the other hand, at the time of full-scale watering, the recirculation valve 10 for notice watering is fully closed to discharge water at a normal strength. In the recirculation valve system, the size of the recirculation valve 10 can be increased by using the hydraulically driven recirculation valve 10.

(2) Pressure control valve system FIG. 4 is a system diagram of a main part for explaining the pressure control valve system.
In this method, a pressure control valve 12 for notice watering is added to the water distribution main pipe 3 extending from the pump 5, and at the time of notice watering,
By controlling the pressure control valve 12 using the notice sprinkling line 13, water is weakly sprayed. On the other hand, at the time of full sprinkling, water is sprinkled with normal strength by controlling the pressure control valve 12 using the full sprinkling line 14. . The switching from the notice sprinkling to the full sprinkling is performed using a timer or the like (not shown). In the pressure control valve system according to the present embodiment, a pressure regulating valve 15 is provided in the notice sprinkling line 13 so that the pressure in the water distribution main pipe 3 can be controlled. In order to prevent excessive pressure from being applied to the pump 5, the recirculation valve 10 has a relief valve provided in the main pipe 3 immediately after the pump 5 so as to return the water flow to the water tank 4. It may be used as a reflux valve operated for the purpose.

(3) Notice Sprinkling Pump System FIG. 5 is a system diagram of a main part for explaining the notice sprinkling pump system. In this system, a notice watering pump 18 for supplying a smaller volume or a lower pressure than the fire pump 5 is added in parallel with the fire pump 5. Then, at the time of advance notice watering, watering is performed weakly using the advance notice watering pump 18, while, at the time of full-scale watering, the notice watering pump 18 is stopped and then the full-scale watering is performed using the fire extinguishing pump 5.

(4) Inverter control system FIG. 6 is a system diagram of a main part for explaining the inverter control system. In this method, a fire pump 5a that changes the rotation speed by an inverter control method is used as a fire pump. Then, at the time of advance notice watering, water is discharged in the advance watering mode with a small number of revolutions, while on the other hand, at the time of full watering, water is discharged in the full watering mode with a large number of rotations. In this inverter control system, it is possible to switch between the preliminary watering and the full watering with one pump facility.

(5) Electric Butterfly Valve System FIG. 7 is a system diagram of a main part for explaining the electric butterfly valve system. In this method, the manual butterfly valve provided on the secondary side of the main body of the automatic valve is changed to the electric butterfly valve 21. The automatic valve is an automatic valve 6a with a secondary pressure adjusting function. In the figure, 22 is a manually actuated valve, 23 is a pilot valve, 2
4 is a pressure regulating valve. And the electric butterfly valve 21
The opening is controlled in two stages, and the water is released at a reduced pressure when the water is sprayed in advance. That is, at the time of advance notice watering, the opening degree of the electric butterfly valve 21 is set to "small", and at the time of full-scale watering, the opening degree of the electric butterfly valve 21 is set to "full open".

(6) Pressure regulating valve system FIG. 8 is a system diagram of a main part for explaining the pressure regulating valve system.
In this method, a control system for advance watering is added to the automatic valve 6b, and a control system for full-scale watering is provided in two systems. The opening of the automatic valve is controlled in two stages to lower the pressure at the time of advance watering. Water. That is, at the time of advance watering, the opening degree of the automatic valve is set to "small" by using the advance watering control system 27 for adjusting the secondary pressure to a low pressure, and at the time of full watering, the secondary pressure is adjusted to a high pressure. The opening degree is set to “fully open” by using the control system 28. In the figure, reference numeral 29 denotes a notice watering pressure adjusting valve for adjusting the pressure of the notice watering.

(7) Bypass Circuit System FIG. 9 is a system diagram of a main part for explaining a bypass circuit system. In this method, the primary side and the secondary side of the automatic valve are provided with a bypass circuit 32 using an electric valve 31, and water is discharged by switching the flow path. That is, the electric valve 31 of the bypass circuit 32 is opened at the time of advance notice watering, and the automatic valve 6a is opened at the time of full-scale watering. In the figure, reference numeral 33 denotes a pressure adjusting valve for adjusting the pressure of notice watering, and reference numeral 34 denotes a test valve for an electric valve opening / closing test.

[0024] In the water spraying equipment in the tunnel having such a configuration, a warning is given to a driver or an evacuee later that full-scale watering will be performed by giving advance notice watering with a smaller flow rate than full-scale watering. Can be. In addition, since the visibility can be ensured in the preliminary watering, vehicles and evacuees can be evacuated quickly, and if full-time watering is performed after a predetermined time, water spraying can be performed in a short time. Sprinkling equipment can be activated, and secondary disasters due to poor visibility are eliminated.

Embodiment 2 FIG. 10 is a diagram showing a state of notice watering showing another example of the water spraying equipment in a tunnel according to the present invention. In the present embodiment, prior to the actual watering, watering with a smaller notice than the full watering is performed on the front side in the vehicle traveling direction from the water spray watering section corresponding to the fire position in the tunnel. The arrow in the figure indicates the traveling direction of the vehicle, and this embodiment is assumed to be one-way traffic.

In this embodiment, a bypass line 39 having one automatic valve 38 for water discharge is provided in the water spray head 2 of the terminal of the water spray watering section in connection with the primary side of the automatic valve 6 to provide advance notice watering. In some cases, one automatic water discharge valve 38 is opened, and on the other hand, during full water sprinkling, the full water sprinkle automatic valve 6 is opened to discharge water. The notice watering time is performed by a timer (not shown) or two-system control. In the figure, the arrow indicates the traveling direction of the vehicle, and the reference numeral 40 indicates a check valve for preventing a backflow at the time of notice watering.

[0027] In the water spraying equipment in the tunnel having the above-described structure, the forerunner sprays a smaller flow rate than the full-scale watering before the full-scale watering on the front side in the vehicle traveling direction.
It is possible to warn the driver or evacuee that full watering will be performed later. And in notice watering,
Because visibility can be secured and it is on the front side in the vehicle traveling direction,
Vehicles and evacuees can evacuate promptly, and if full-time watering is performed after a predetermined time, water spray watering equipment can be activated in a short time, and poor visibility The secondary disaster is gone.

In this embodiment, since the vehicle is one-way traffic, the water spray head 2 for notice watering is provided at one end of one water spray watering section. The water spray heads 2 for notice spraying are provided at both ends.
Then, at both ends of one water spray watering section, notice watering is performed.

In the present embodiment, advance notice watering is performed by discharging water only from the water spray head 2 at one end of the water spray watering section, but various other notice waterings can be used. The form of water discharge is conceivable. The notice watering needs to be partial watering on the front side in the vehicle traveling direction from the target water spray watering section. Partial watering here means watering at one location in the tunnel longitudinal direction or watering dispersed at multiple locations, partial watering in the tunnel cross-sectional direction, such as watering only on the left side, rod-like watering, multiple rod-like watering, etc. Conceivable. In order to prevent the water from running out in full-scale watering, it is desirable that the warning watering be used to effectively alert the driver or evacuee with little water.

Embodiment 3 FIG. 11 is a view showing a state of notice watering showing still another example of the water spraying equipment in a tunnel according to the present invention. In the present embodiment, similar to Embodiment 2, before the full-scale watering, the preliminary watering with a smaller flow rate than the full-scale watering before the full-scale watering, before the water-spraying section corresponding to the fire position in the tunnel. do. The arrow in the figure indicates the traveling direction of the vehicle, and this embodiment is assumed to be one-way traffic.

In the present embodiment, a dedicated pipe 43, a dedicated automatic valve 44, and dedicated water spray heads 45 and 46 are provided separately for the preliminary watering separately from the actual watering, and the tunnel section is cut off in a film or band shape. Watering as before. That is, since the dedicated water spray heads 45 and 46 are water spray heads dedicated to the advance notice, the purpose is to issue a warning to a driver or an evacuee. For this reason, by performing advance notice watering so as to block the tunnel cross section, that is, the cross section of the traveling section in a film shape or a band shape, a vehicle passing therethrough is instantaneously exposed to strong water discharge to draw attention.

In the water spraying equipment in the tunnel having the above-described structure, the forerunner sprays a smaller flow rate than the full-scale watering before the full-scale watering on the front side in the vehicle traveling direction.
It is possible to warn the driver or evacuee that full watering will be performed later. And in notice watering,
Because visibility can be secured and it is on the front side in the vehicle traveling direction,
Vehicles and evacuees can evacuate promptly, and if full-time watering is performed after a predetermined time, water spray watering equipment can be activated in a short time, and poor visibility The secondary disaster is gone.

In the second and third embodiments, the water spraying section is located in front of the water spraying section in the vehicle traveling direction and before the full-scale watering,
It is supposed to perform advance notice watering with a smaller flow rate than full-scale watering, but during the full-time watering of the water spray watering section, execute the preliminary watering with a smaller flow rate than this full-scale watering on the front side of the water spray watering section in the vehicle traveling direction. You may do it. By discharging water in this way, a warning can be issued to the vehicle in front of the vehicle in the direction of full-scale watering, and the vehicle can be stopped before approaching full-scale watering, further reducing secondary disasters. Can be.

In each of the above embodiments, the notice watering is watering having a substantially uniform density in the watering area. However, the warning watering is a method of watering periodically in the watering area with respect to time. It is good. Here, the term “periodic watering” refers to watering that is intermittently watered or watering whose density changes periodically, and its cycle may not be constant. The periodic watering can be performed, for example, by the control panel 7 intermittently performing the small flow rate watering means of the first embodiment. In addition, oscillating sprinkling for oscillating rod-shaped water discharge in the cross-sectional direction of the tunnel is more effective. Oscillating watering can be realized by using a structure in which the water spray head 2 rotates within the cross section of the tunnel, and further providing a driving means such as an actuator for swinging the water spray head 2. By performing such water discharge, a warning can be more effectively issued to the vehicle.

Further, the warning watering may be designed such that the watering is strengthened as the fire spot is approached in the watering area and the warning level is increased. Here, strengthening the watering and increasing the warning level means increasing the watering density, increasing the water discharge speed, increasing the degree of dispersion in the longitudinal direction of the watering, and reducing the area of the watering area in the tunnel cross-sectional direction. Includes widening and shortening the watering cycle. Such stepwise advance watering can be performed by performing the small flow rate watering means of the first embodiment stepwise. By performing such advance notice watering, a warning can be more effectively issued to the vehicle. In addition, as for the preliminary watering, the watering may be strengthened as the actual watering becomes closer in time within the watering area, and the warning level may be gradually increased. By performing such advance notice watering, a warning can be more effectively issued to the vehicle.

It should be noted that the position where the notice watering is performed may be on the near side in the vehicle traveling direction, that is, any position from the position where the full-scale watering is performed to the tunnel entrance on the near side in the vehicle traveling direction. Position. By applying the notice watering to the entrance of the tunnel, it is possible to stop the passing vehicles from entering the tunnel, and it is possible to further reduce the secondary disaster.

Embodiment 4 FIG. FIGS. 12 to 14 are operation process diagrams of a valve showing another example of the small flow rate watering means showing still another example of the in-tunnel water spray watering equipment of the present invention. The small flow rate watering means of the first embodiment “(6) Pressure adjusting valve method”
In, control of notice and full-scale watering is performed by a remote control unit. However, in the present embodiment, the control mechanism for the small flow rate sprinkling means is incorporated in the automatic valve device in each district. For this reason, just by sending a start signal from the remote control unit side, the automatic valve device in each district performs advance notice watering and delays with the mechanical timer built into the automatic valve device. , Followed by full watering.

The operation will be described with reference to the drawings. FIG. 12 shows a state of the monitoring state. The starting valve 53 and the main valve 50 are both in a fully closed state. Although the starting valve 53 is one, it is connected via the timer unit 54 to both the pressure regulating pilot valve 51 for which the notice water pressure is set and the pressure regulating pilot valve 52 for which the full water pressure is set. Each pressure regulating pilot valve 51, 52 is connected to a secondary pressure monitoring line and a cylinder pressurizing line.

FIG. 13 shows the state of watering the notice. When the start valve 53 is opened upon receiving the start signal, the primary pressure water flows into the timer unit 54. At the same time, the timer unit 54
The pressurized water that has passed through the notice watering pressure regulating pilot valve 51 via the valve pressurizes the cylinder of the main valve 50, and water discharge is started from the main valve 50. At this time, the pressure regulating pilot valve 51 controls the opening degree of the main valve 20 to be the set notice watering pressure while monitoring the secondary pressure of the main valve 50. Further, the timer unit 54 performs the sliding operation slowly while receiving the resistance of the internal oil using the primary pressure as a driving source.

FIG. 14 shows a state of full-scale watering. When the timer unit 54 is operated by the primary pressure and the line to the pressure control pilot valve 52 for full-scale sprinkling pressure water discharge is sufficiently opened, the pressure water passing through the pressure control pilot valve 52 pressurizes the cylinder of the valve 50, and Valve 50 opens further. Due to the increase in the pressure on the secondary side, the notice water pressure regulating pilot valve 51 is closed and the water supply to the cylinder is stopped. The pressure pilot valve 52 controls the opening degree of the main valve 50 so as to reach the set full sprinkling pressure while monitoring the secondary pressure of the main valve 50.

When the starting valve 53 is closed, the supply of water to the cylinder is stopped, and the valve 50 is closed.
At the same time, all of the notice pilot valve 51 for watering, the pilot valve 52 for full-scale water pressure discharge, and the timer unit 54 are restored to the monitoring state.

Embodiment 5 FIG. FIGS. 15 to 17 are operation process diagrams of a valve showing another example of the small flow water sprinkling means showing still another example of the in-tunnel water spray water sprinkling equipment of the present invention. In the fourth embodiment, a delay is applied by a mechanical timer, and then full water sprinkling is performed. In the present embodiment, a delay is applied by an electric timer. Other configurations are the same as those of the fourth embodiment.

The operation will be described with reference to the drawings. FIG. 15 shows a state of the monitoring state. The start valves 63 and 64 and the main valve 60 are both in a fully closed state. In the present embodiment, two sets of starting valves and pressure regulating pilot valves are provided as 63 and 61 for advance watering and 64 and 62 for full watering, respectively. 2 constituting two parallel pressure lines
The two start-up valves 63 and 64 are arranged in series, and the close-up of the start-up valve 63 for notice watering causes the valve 60 to immediately start closing. The timer has a timer switch 65 for both on-delay and off-delay.
And two start valves 63,
64 does not operate.

FIG. 16 shows the state of spraying notice. Upon receiving the start signal, the notice spraying start valve 63 is opened immediately, and the main valve 60 starts opening via the pressure regulating pilot valve 61 set to the notice spraying pressure. The pressure control pilot valve 61 is a main valve 6
The secondary pressure of 0 is monitored, and the opening of the main valve 60 is controlled so as to reach the noticed water spray pressure. At the same time, the electronic timer 65 starts counting for opening the full watering start valve 64.

FIG. 17 shows the state of full-scale watering. The electronic timer 65 starts counting, and when a set time elapses, the activation valve 64 for full-scale watering is energized and opened. When the full sprinkling start valve 64 is opened, the pressure water that has passed through the full sprinkling pilot valve 62 pressurizes the cylinder of the main valve 60, and the main valve 6
0 is further opened. Because the secondary pressure of the main valve 60 rises, the pilot watering pilot valve 61 is closed, but the water supply from the full-scale watering pilot valve 62 keeps the valve 60 open, and the full-scale watering pilot valve 62 is closed. While monitoring the secondary pressure of the valve 60, the opening degree of the main valve 60 is controlled so as to reach the set specified pressure.

At the time of closing, upon receiving a closing signal, the notice spraying start valve 63 closes in advance, water supply to the cylinder is stopped, and the electronic timer 65 starts counting at the same time as the main valve 60 closes. After the required time for closing the notice watering start valve 63 has elapsed, the full watering start valve 64 is energized and closed.

Embodiment 6 FIG. FIG. 18 is a system diagram of a main part of a small flow rate watering means showing still another example of the water spraying and spraying equipment in a tunnel according to the present invention. The small flow rate watering means of the present embodiment is similar to the small flow rate watering means “(5) Electric butterfly valve method” of the first embodiment. On the secondary side, instead of a butterfly valve, a simultaneous opening valve 71 provided with a valve body 72 having an opening through which a small flow rate is passed is provided. The control mechanism for fully opening the secondary side valve 71 is incorporated in the automatic valve device in each area instead of remote control. That is,
When the remote control unit sends only the start signal, the automatic valve device in each area performs the advance notice watering, a delay is applied by the mechanical timer 73 incorporated in the automatic valve device, and thereafter, the simultaneous opening valve 71 is fully opened. Then, full-scale watering is performed. The timer may be an electric timer.

Embodiment 7 FIG. FIG. 19 is a system diagram of a main part showing still another example of the water spraying and spraying equipment in a tunnel according to the present invention. This embodiment is a small-flow water sprinkling means that, during the full-scale watering of the water-sprinkling section corresponding to the fire position in the tunnel, an advance notice of a smaller flow rate than the full-scale sprinkling is performed on the front side of the water-spraying section in the vehicle traveling direction. It is provided with.

In FIG. 19, a two-stage flow control device 81 is provided on the primary side of the head 80 closest to the vehicle traveling direction. This two-stage flow control device 81 has a structure similar to that of a mechanical timer, but has a predetermined gap formed between the cylinder 81a and the piston 81b, and is delayed by the oil and the orifice. Until the piston 81b moves to the end, the fire extinguishing water supplied from the primary side to the cylinder 81a flows through the head 80 through this gap. Therefore, during this time, the water discharge is restricted and the notice water discharge is performed at a small flow rate, and the full-scale water discharge is performed only when the piston 81b moves to the end. The other head 82 is fully discharged from the beginning. In the above-described seventh embodiment, the number of heads 80 for spraying notices is one, but a plurality of heads 80 may be provided.

Embodiment 8 FIG. FIG. 20 is a system diagram of a main portion showing still another example of the in-tunnel water spraying / spraying equipment of the present invention. In the present embodiment, a small-flow water sprinkling means is provided in the water spray watering section corresponding to the fire position in the tunnel to give advance notice water spray at a smaller flow rate than the full water sprinkling before the full water sprinkling.

In FIG. 20, a two-stage flow control device 91 is provided on the secondary side of the automatic valve 90 and before the branch pipe 92. This two-stage flow control device 91 has the same structure as the two-stage flow control device 81 of the seventh embodiment,
A predetermined gap is formed between the piston 91a and the piston 91b. At the beginning, a small amount of notice water is released, and the full-scale water discharge is performed only when the piston 91b moves to the end.

In the above-described seventh and eighth embodiments, in order to achieve a small flow rate, the annular gap flow path is provided between the cylinders 81a and 91a of the two-stage flow control devices 81 and 91 and the pistons 81b and 91b. Although provided, it may be a groove-shaped flow path formed in the pistons 81b and 91b instead of the annular gap. Also, a flow path for a small flow rate is provided between the cylinders 81a and 91a and the secondary pipe or between the primary pipe and the secondary pipe, and the cylinders 81a and 91a and the pistons 81b and 91b are provided.
You may make it eliminate the flow path between b.

In the above-described seventh and eighth embodiments, an annular gap flow path for a small flow is provided between the cylinders 81a, 91a and the pistons 81b, 91b of the two-stage flow controllers 81, 91. However, if the pistons 81b and 91b are shaped like a truncated cone so that the annular gap increases with the movement of the piston, the flow rate gradually increases with the passage of time, and the degree of warning is increased. Can be.

[0054]

The water spraying equipment in the tunnel according to the present invention has a small flow rate that gives a smaller notice than the full watering before the full watering in the water spraying section corresponding to the fire position in the tunnel. Equipped with watering means. As a result, it is possible to warn the driver or evacuee that full-scale watering will be performed later. If the full-time watering is performed after the time, the water spray watering equipment can be activated in a short time, and the secondary disaster due to poor visibility is eliminated.

Further, a small-flow water sprinkling means is provided on the front side of the water spray water sprinkling section corresponding to the fire position in the tunnel in the vehicle traveling direction, and before the full water sprinkling, a small-volume water sprinkling with a smaller flow rate than the full sprinkling. As a result, it is possible to warn the driver or evacuee that full-scale watering will be performed later. If full water sprinkling is performed after a predetermined time, the water spray water sprinkling equipment can be activated in a short time, and a secondary disaster due to poor visibility is eliminated.

In addition, during the full-scale watering of the water-spraying section corresponding to the fire position in the tunnel, a small-flow watering means for executing an advance spraying with a smaller flow rate than the full-scale watering on the front side of the water-spraying section in the vehicle traveling direction is provided. Have. As a result, it is possible to warn the driver or evacuee that full-scale watering will be performed later. If full water sprinkling is performed after a predetermined time, the water spray water sprinkling equipment can be activated in a short time, and a secondary disaster due to poor visibility is eliminated.

The notice watering is watering that is periodic with respect to time within the watering area. Therefore, a warning can be issued to the vehicle more effectively.

In the pre-notification watering, the watering is strengthened and the degree of warning is increased as the fire spot is approached in the watering area. With such watering, a warning can be more effectively issued to the vehicle.

In the preliminary watering, as the actual watering becomes closer in time within the watering area, the watering is increased and the degree of warning is increased. By watering like this,
A warning can be more effectively issued to the vehicle.

Further, the position where the notice is sprayed is at the entrance of the tunnel. As a result, it is possible to stop the passing vehicle from entering the tunnel, and it is possible to further reduce secondary disasters.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating an arrangement state of a tunnel water spraying / spraying facility.

FIG. 2 is a view showing a state of notice watering of the water spraying equipment in a tunnel according to the present invention.

FIG. 3 is a system diagram of a main part for explaining a reflux valve system.

FIG. 4 is a system diagram of a main part for explaining a pressure control valve system.

FIG. 5 is a system diagram of a main part for explaining a notice watering pump system.

FIG. 6 is a system diagram of a main part for explaining an inverter control method.

FIG. 7 is a system diagram of a main part illustrating an electric butterfly valve system.

FIG. 8 is a system diagram of a main part for explaining a pressure regulating valve system.

FIG. 9 is a system diagram of a main part for explaining a bypass circuit system.

FIG. 10 is a diagram showing a state of notice watering showing another example of the water spraying equipment in a tunnel according to the present invention.

FIG. 11 is a view showing a state of notice watering showing still another example of the water spraying equipment in a tunnel according to the present invention.

FIG. 12 is a view showing a state of monitoring a small flow rate watering means showing still another example of the water spraying equipment in a tunnel according to the present invention.

13 is a view showing a state of notice watering by the small flow rate watering means of FIG. 12;

FIG. 14 is a view showing a state of full-scale water sprinkling by the small flow rate water sprinkling means of FIG. 12;

FIG. 15 is a view showing a state of monitoring a small flow rate watering means showing still another example of the water spraying equipment in a tunnel according to the present invention.

FIG. 16 is a view showing a state of notice watering by the small flow rate watering means of FIG. 15;

17 is a view showing a state of full-scale water sprinkling by the small flow rate water sprinkling means in FIG. 15;

FIG. 18 is a system diagram of a main part showing another example of the small flow rate watering means showing still another example of the in-tunnel water spray watering equipment of the present invention.

FIG. 19 is a system diagram of a main part showing still another example of the in-tunnel water spray watering equipment of the present invention.

FIG. 20 is a system diagram of a main portion showing still another example of the in-tunnel water spray / spraying equipment of the present invention.

[Explanation of symbols]

1 sensor, 2 water spray head, 3 water main, 4 water tank, 5 pump, 6 automatic valve, 7 control panel, 100 tunnel.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Toshio Kan 4-7-3 Kudanminami, Chiyoda-ku, Tokyo Nomi Disaster Prevention Co., Ltd. (72) Inventor Hiroki Hirai 4-73 Kudanminami, Chiyoda-ku, Tokyo No. F-term (in reference) 2E189 CH03 GA01 KB04 4D074 AA10 BB03 FF14

Claims (7)

[Claims] 1. A tunnel according to claim 1, further comprising a small-flow water sprinkling means for giving advance notice of a smaller flow rate than the full-scale water sprinkling before the full-scale water sprinkling in the water spray sprinkling section corresponding to the fire position in the tunnel. Water spray watering equipment. 2. A small flow water sprinkling means for giving advance notice water spraying at a smaller flow rate than the full water sprinkling before the full water sprinkling before the full water sprinkling, in front of the water spray water sprinkling section corresponding to the fire position in the tunnel. Tunnel water spraying and spraying equipment. 3. A small-flow sprinkler in which, during full-scale sprinkling of a water-sprinkling section corresponding to a fire position in a tunnel, an advance sprinkling of a smaller flow rate than the full-scale sprinkling is performed on the front side of the water-spraying section in the vehicle traveling direction. Means for spraying and spraying water through a tunnel. 4. The facility for spraying tunnel water spray according to claim 1, wherein the notice watering is watering that is periodic with respect to time within the watering area. 5. The spraying of a tunnel water spray according to claim 2, wherein the warning watering increases the degree of watering and the degree of warning as the vehicle approaches a fire spot in the watering area. Facility. 6. The warning according to any one of claims 1 to 4, wherein the watering of the advance notice is such that, as the actual watering becomes closer in time within the watering area, the watering is strengthened and the degree of warning is increased. Tunnel water spray watering equipment. 7. The facility for spraying and spraying tunnel water according to claim 2, wherein the position where the notice is sprayed is a tunnel entrance.