JP3938583B2 - Tunnel water spray watering equipment - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a water spray watering facility that sprays or sprinkles fire extinguishing liquid against a fire in a tunnel, and more particularly to a tunnel water spray watering facility that performs preliminary watering prior to the implementation of full-scale watering.

  When a fire occurs in a tunnel where a water spray watering facility is installed, the facility is activated to extinguish or suppress the fire. However, if the equipment is activated and discharged without prior notice, it will not be possible to secure visibility of the section due to the water discharge. There is a risk of disappearing.

  For this reason, in the conventional water spray watering equipment, when the equipment is operated, it is necessary to confirm the stop of the passing vehicle in the tunnel, the evacuation completion of the evacuees, and the like.

  This invention was made in order to solve the above-mentioned subject, and it can operate a water spray watering equipment safely and within a short time by carrying out notice watering of a small flow volume rather than a full-scale watering. The purpose is to obtain water spraying equipment in the tunnel. Another object of the present invention is to obtain a water spray spraying facility in the tunnel that can stop the entry of a passing vehicle into the tunnel by applying a notice watering to the tunnel entrance.

Tunnel water spray sprinkler according to the invention, in the vehicle traveling direction front side of the water spray watering section that performs full watering performed corresponding to the tunnel fire position, a full-scale watering embodiment previously than full sprinkler flow A small-flow sprinkling means is provided for performing preliminary watering.

  In addition, the notice watering is a watering that is periodic with respect to time within the watering area.

  In addition, the notice watering increases the level of warning by increasing the watering as the fire point is approached within the watering area.

  In addition, notice watering increases the level of warning by increasing watering as the time of full-scale watering approaches in the watering area.

  Furthermore, the location where the notice watering is performed is the tunnel entrance.

Tunnel water spray sprinkler according to the invention, in the vehicle traveling direction front side of the water spray watering section that performs full watering performed corresponding to the tunnel fire position, a full-scale watering embodiment previously than full sprinkler flow A small-flow sprinkling means is provided for performing preliminary watering. Therefore, it is possible to warn the driver and the refugee that a full-scale watering will be performed later, and in the preliminary watering, the vehicle and the refugee can be quickly If full watering is performed after a predetermined time, the water spray watering equipment can be activated within a short time, and secondary disasters due to poor visibility are eliminated.

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

  In addition, the notice watering increases the level of warning by increasing the watering as the fire point is approached within the watering area. By spraying water like this, a warning can be issued to the vehicle more effectively.

  In addition, notice watering increases the level of warning by increasing watering as the time of full-scale watering approaches in the watering area. By spraying water like this, a warning can be issued to the vehicle more effectively.

  Furthermore, the location where the notice watering is performed is the tunnel entrance. Thereby, it becomes possible to stop the approach of the passing vehicle into the tunnel, and further reduce the secondary disaster.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an arrangement state of a water spray watering facility in a tunnel. In FIG. 1, in a tunnel 100, a sensor 1 for detecting a fire and a plurality of water spray heads 2 arranged in line in the longitudinal direction of the tunnel on one side in the width direction of the tunnel 100 (upper side in FIG. 1). A water distribution main 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 3 are provided.

  In the present embodiment, for example, 10 water spray heads 2 are provided for each water spray watering section (for simplicity, four) in the water spray water spraying section, and the water spray head 2 is sufficiently discharged against a fire in the water spray watering section. As shown in the figure, 10 are configured to operate simultaneously. And one water spray automatic valve 6 which supplies water is provided with respect to 2 groups of water spray heads provided for each water spray watering section.

  Two sensors 1 are provided for one water spray watering section. When the sensor 1 detects a fire, the signal is transmitted to the control panel 7. Based on this signal, the control panel 7 automatically controls the water spray spraying section to spray water into two water spray sprinkling sections of the water spray sprinkling section adjacent to the lee of the water spray sprinkling section. 6 is opened.

  FIG. 2 is a view showing a state of notice watering of the water spraying equipment in the tunnel of the present invention. In the water spray spraying facility in the tunnel of the present invention, a preliminary water spray with a smaller flow rate than that of the full-scale watering is performed in the water spray watering section corresponding to the fire position in the tunnel before the actual real watering. While full-scale water sprinkling is performed over almost the entire area in the width direction of the tunnel, the preliminary watering is a small-flow sprinkling. For example, in the case of the example shown in FIG. ) This notice watering is a watering of a small flow rate, and is, for example, a watering of almost uniform density in the watering area. Moreover, it is supposed that fire-extinguishing water can be saved by using partially dispersed water.

  The noticeable watering with a small flow rate is realized by making the amount of water discharged from the water spray head 2 smaller than that of full-scale watering. The following method can be adopted as the small flow sprinkling means for performing this small flow notice watering.

(1) Recirculation valve system FIG. 3 is a system diagram of a main part for explaining the recirculation valve system.
In this system, a circulation valve 10 for notice watering is added to the water distribution main 3 extending from the pump 5, and the water in the water distribution main 3 is partially circulated by the recirculation valve 10 to greatly release the pressure, thereby distributing the water main 3. The noticeable watering of a small flow rate is made by lowering the pressure. That is, at the time of notice watering, the recirculation valve 10 for notice watering is fully opened to weaken water discharge. On the other hand, at the time of full-scale watering, the reflux valve 10 for notice watering is fully closed, and water discharge is made into normal intensity | strength. In this reflux valve system, the size of the reflux valve 10 can be increased by using the water pressure driven reflux 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 system, a pressure control valve 12 for notice watering is added to the water distribution main 3 extending from the pump 5, and when the notice watering, the pressure control valve 12 is controlled using the notice watering line 13, and the water is weakly sprinkled. On the other hand, at the time of full-scale watering, water is sprayed with normal strength by controlling the pressure control valve 12 using the full-scale watering line 14. Switching from the preliminary watering to full-scale watering is performed using a timer (not shown). In the pressure control valve system of the present embodiment, the notice watering line 13 is provided with a pressure regulating valve 15 so that the pressure in the water distribution main 3 can be controlled.
The reflux valve 10 includes a relief valve provided in the pipe main pipe 3 immediately after the pump 5 so as to return the water flow to the water tank 4 in order to prevent excessive pressure on the pump 5. You may use as a recirculation | reflux valve operated for the objective.

(3) Notice Watering Pump Method FIG. 5 is a system diagram of a main part for explaining the notice watering pump method.
In this system, a preliminary watering pump 18 for supplying a smaller capacity or a lower pressure than the fire pump 5 is added in parallel with the fire pump 5. At the time of notice watering, water is weakly sprinkled using the notice watering pump 18, while at the time of full-scale watering, the notice water pump 18 is stopped and then the water is sprayed using the fire pump 5.

(4) Inverter Control Method FIG. 6 is a system diagram of a main part for explaining the inverter control method.
In this system, a fire extinguishing pump 5a that changes the rotational speed by an inverter control type is used as a fire extinguishing pump. And at the time of notice watering, it discharges in the notice watering mode with a small rotation speed, and on the other hand, at the time of full-scale watering, it discharges in the full watering mode with a large number of rotations. In this inverter control system, it is possible to switch the notice watering and the full-scale 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 system, 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 manual start valve, 23 is a pilot valve, and 24 is a pressure adjusting valve. Then, the opening degree of the electric butterfly valve 21 is controlled in two stages, and the water pressure is lowered and discharged at the time of preliminary watering. That is, the opening degree of the electric butterfly valve 21 is set to “small” during the preliminary watering, while the opening degree of the electric butterfly valve 21 is set to “fully open” during the full watering.

(6) Pressure regulating valve system FIG. 8 is a system diagram of a main part for explaining the pressure regulating valve system.
In this system, a control system for notice watering is added to the automatic valve 6b, the control system for full-scale watering is made into two systems, the opening degree of the automatic valve is controlled in two stages, and the pressure at the time of notice watering is lowered. Water is discharged. That is, when the notice watering is performed, the notice watering control system 27 that adjusts the secondary side pressure to a low pressure is used to set the opening of the automatic valve to “small”. The opening degree is set to “fully open” using the control system 28. In the figure, 29 is a pressure adjusting valve for notice watering for adjusting the pressure of notice water.

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

  In the tunnel water spray watering equipment having such a configuration, warning watering with a smaller flow rate than that of full-scale watering can warn the driver and evacuees that real watering will be performed later. In addition, since the visibility can be secured in the notice watering, the vehicle and the refugee can evacuate quickly, and if a full-scale watering is performed after a predetermined time, water spray can be performed in a short time. Watering equipment can be activated and secondary disasters due to poor visibility are eliminated.

Embodiment 2. FIG.
FIG. 10 is a view showing a state of the preliminary watering showing another example of the water spray watering equipment in the tunnel of the present invention. In the present embodiment, a preliminary watering with a smaller flow rate than the actual watering is performed before the actual watering on the near side of 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 vehicle traveling direction, and this embodiment is assumed to be one-sided.

  In the present embodiment, a bypass line 39 having one automatic water discharge valve 38 is connected to the primary side of the automatic valve 6 in the water spray head 2 of the terminal of the water spray watering section, and one is provided at the time of preliminary watering. The automatic water discharge valve 38 is opened. On the other hand, the full watering automatic valve 6 is opened and water is discharged at the time of full watering. The time for the notice watering is performed by a timer (not shown) or two-system control. In the figure, an arrow indicates the traveling direction of the vehicle, and 40 indicates a check valve for preventing a backflow at the time of preliminary watering.

  In such a water spray spraying facility in the tunnel, before the actual watering on the front side of the vehicle traveling direction, a preliminary watering with a smaller flow rate than the actual watering will be performed later on to drivers and evacuees. It can warn that full-scale watering will be performed. And in the preliminary watering, the field of view can be secured and the vehicle traveling direction is on the near side, so that the vehicle and the refugee can evacuate quickly, and if a full watering is performed after a predetermined time, The water spray watering equipment can be activated in a short time, and the secondary disaster due to poor visibility is eliminated.

  In the present embodiment, since one-way traffic is provided, a water spray head 2 for notice watering is provided at one side end of one water spray watering section. Water spray heads 2 are provided at both ends. And notice watering is performed at both ends of one water spray watering section.

  In addition, the notice watering in the present embodiment is a notice watering only by discharging water from the water spray head 2 at one end of the water spray watering section. Can be considered. The preliminary watering needs to be a partial watering on the front side in the vehicle traveling direction from the target water spray watering section. The partial sprinkling referred to here includes one sprinkling in the longitudinal direction of the tunnel, sprinkling dispersed in a plurality of locations, partial sprinkling in the tunnel cross-sectional direction, such as a sprinkling only on the left side or a sprinkling water, Conceivable. In order to prevent the water from running out with full-scale watering, it is desirable that the notice watering can effectively draw attention to the driver and evacuees with less water.

Embodiment 3 FIG.
FIG. 11 is a view showing a state of notice watering showing still another example of the water spraying equipment in the tunnel of the present invention. In the present embodiment, in the same manner as in the second embodiment, the preliminary watering with a smaller flow rate than the actual watering before the actual 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. do. The arrow in the figure indicates the vehicle traveling direction, and this embodiment is assumed to be one-sided.

  In this embodiment, in addition to full-scale watering, a special piping 43 for special watering, a special automatic valve 44, and special water spraying heads 45 and 46 are provided, so that the tunnel cross-section is cut off in a film shape or a belt shape. Do watering. That is, since the dedicated water spray heads 45 and 46 are dedicated water spray heads for notice, the purpose is to issue a warning to the driver or evacuee. For this reason, by performing preliminary watering so as to block the tunnel cross section, that is, the traveling section cross section in a film shape or a belt shape, the vehicle passing here is exposed to strong water discharge for a moment to draw attention.

  In such a water spray spraying facility in the tunnel, before the actual watering on the front side of the vehicle traveling direction, a preliminary watering with a smaller flow rate than the actual watering will be performed later on to drivers and evacuees. It can warn that full-scale watering will be performed. And in the preliminary watering, the field of view can be secured and the vehicle traveling direction is on the near side, so that the vehicle and the refugee can evacuate quickly, and if a full watering is performed after a predetermined time, The water spray watering equipment can be activated in a short time, and the secondary disaster due to poor visibility is eliminated.

  In Embodiments 2 and 3, the preliminary spraying with a smaller flow rate than the full-scale watering is performed before the full-scale watering before the actual watering from the water-spraying water-spreading section. During the sprinkling, a noticeable sprinkling with a smaller flow rate than the full-scale sprinkling may be performed on the near side of the vehicle traveling direction from the water spray sprinkling section. By discharging water in this way, it is possible to issue a warning to the vehicle in front of the direction of full-scale watering and to stop the vehicle before approaching full-scale watering, further reducing secondary disasters. Can do.

  Further, in each of the embodiments described above, the notice watering is a water spray having a substantially uniform density in the watering area, but the notice watering may be a periodic watering with respect to time in the watering area. . Here, the periodic watering means watering intermittently in time or watering whose density periodically changes, and the period may not be constant. Periodic watering can be carried out, for example, by the control panel 7 intermittently performing the small flow rate watering means of the first embodiment. Further, swing watering that swings the rod-like water discharge in the cross-sectional direction of the tunnel is further effective. Oscillating watering can be realized by providing a structure in which the water spraying head 2 is rotated within the cross section of the tunnel, and further providing driving means such as an actuator for swinging the water spraying head 2. By discharging such water, a warning can be issued to the vehicle more effectively.

  Further, the notice watering may be made to increase the level of warning by increasing the watering as the fire point is approached within the watering area. Here, increasing the watering and increasing the warning level means increasing the watering density, increasing the water discharge speed, increasing the dispersion in the longitudinal direction of the watering, and the area of the watering area in the tunnel cross-section direction. Includes widening, shortening the watering cycle. Such stepwise notice watering can be performed by performing the small flow rate watering means of the first embodiment step by step. By performing such notice watering, a warning can be issued to the vehicle more effectively. Further, the notice watering may be made stronger as the time of full-scale watering approaches in the watering area, and the degree of warning gradually increases. By performing such notice watering, a warning can be issued to the vehicle more effectively.

  In addition, the position where the notice watering is performed may be an arbitrary position from the front side of the vehicle traveling direction, that is, from the position where the full-scale watering is performed to the tunnel entrance on the front side of the vehicle traveling direction. There may be. By applying the notice watering to the tunnel entrance, it becomes possible to stop the entry of the passing vehicle into the tunnel and further reduce the secondary disaster.

Embodiment 4 FIG.
FIG. 12 to FIG. 14 are operation process diagrams of a valve showing another example of the small flow rate water spray means showing still another example of the water spray spraying device in the tunnel of the present invention. In the small flow sprinkling means “(6) pressure regulating valve system” according to the first embodiment, the preliminary sprinkling and the full-scale watering are controlled on the remote control unit side. However, in this embodiment, a control mechanism for the small flow sprinkling means is incorporated in the automatic valve device in each district. For this reason, only an activation signal is sent from the remote control unit side, notice watering is performed by the automatic valve device in each area, and a delay is applied by a mechanical timer built into the automatic valve device. After that, full-scale watering is performed.

  The operation will be described with reference to the drawing. FIG. 12 shows the state of the monitoring state. Both the start valve 53 and the main valve 50 are fully closed. Although the number of the start valves 53 is one, it is connected via the timer unit 54 to both the pressure regulation pilot valve 51 set with the preliminary watering pressure and the pressure regulation pilot valve 52 set with the full watering pressure. Each of the pressure control pilot valves 51 and 52 is connected to a secondary pressure monitoring line and a cylinder pressurizing line.

  FIG. 13 shows a state of notice watering. When the start valve 53 is opened in response to the start signal, the primary pressure water flows into the timer unit 54. At the same time, the pressure water that has passed through the preliminary sprinkling pressure adjustment pilot valve 51 via the timer unit 54 pressurizes the cylinder of the main valve 50, and water discharge is started from the main valve 50. At this time, the pressure adjustment pilot valve 51 controls the secondary valve pressure of the main valve 50 so that the opening degree of the main valve 20 becomes the preset notice watering pressure. The timer unit 54 slowly slides 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 full-scale water spray pressure regulating pilot valve 52 is sufficiently opened, the pressure water that has passed through the pressure regulating pilot valve 52 pressurizes the cylinder of the main valve 50, The valve 50 is further opened. Due to the pressure increase on the secondary side, the piloting water pressure adjustment pilot valve 51 is closed and the water supply to the cylinder is stopped. However, the main valve 50 is kept open by the water supply by the water pressure adjustment pilot valve 52 for the full-scale water pressure discharge. While monitoring the secondary pressure of the main valve 50, the pressure pilot valve 52 controls the opening degree of the main valve 50 so as to achieve the set full-scale water spray pressure.

  At the time of closing, when the start valve 53 is closed, the water supply to the cylinder is stopped and the valve 50 is closed. At the same time, the noticeable watering adjustment pilot valve 51, the full-scale watering pressure discharge pilot valve 52, and the timer unit 54 are all restored to the monitoring state.

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

The operation will be described with reference to the drawing. FIG. 15 shows the state of the monitoring state. The start valves 63 and 64 and the main valve 60 are both fully closed. In this embodiment, two sets of the start valve and the pressure regulating pilot valve are provided as the notice watering 63 and 61 and the full watering 64 and 62, respectively. The two start valves 63 and 64 constituting the two pressurization lines in parallel are arranged in series, and the main valve 60 starts to close immediately by closing the start valve 63 for notice watering. It has become.
Further, a timer switch 65 for both on-delay and off-delay is used as the timer, and the two start valves 63 and 64 are not operated at the same time due to the problem of power capacity.

FIG. 16 shows a state of notice watering. Upon receipt of the start signal, the start watering start valve 63 is immediately opened, and the main valve 60 starts to open via the pressure regulating pilot valve 61 set to the advance water spray pressure. The pressure adjustment pilot valve 61 monitors the secondary pressure of the main valve 60 and controls the opening degree of the main valve 60 so that the notice water spray pressure is obtained.
At the same time, the electronic timer 65 starts counting to open the full-scale watering start valve 64.

FIG. 17 shows a state of full-scale watering. When the electronic timer 65 starts counting and the set time elapses, the full watering start valve 64 is energized and opened. When the full-scale watering start valve 64 is opened, the pressure water that has passed through the full-scale watering pilot valve 62 pressurizes the cylinder of the main valve 60, and the main valve 60 is further opened.
Since the secondary pressure of the main valve 60 rises, the preliminary watering pilot valve 61 closes, but the main valve 60 continues to be opened by the water supply from the main watering pilot valve 62, and the main watering pilot valve 62 remains in the main watering pilot valve 62. While monitoring the secondary pressure of the valve 60, the opening degree of the main valve 60 is controlled so as to become the set specified pressure.

  At the time of closing, when the closing signal is received, the notice watering start valve 63 is closed in advance, the water supply to the cylinder is stopped, the valve 60 is closed, and at the same time, the electronic timer 65 starts counting, and the notice watering is used. After the time required for closing the start valve 63 elapses, 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 equipment in a tunnel of the present invention. The small-flow watering means of the present embodiment is similar to the small-flow watering means “(5) Electric butterfly valve system” of the first embodiment, but in the present embodiment, the automatic valve 70 with a secondary pressure adjusting function is used. Instead of the butterfly valve on the secondary side, a simultaneous release valve 71 provided with a valve body 72 having an opening through which a small flow rate passes is provided. A control mechanism for fully opening the secondary valve 71 is incorporated in the automatic valve device in each area, not by remote control. That is, when the remote control unit sends only the activation signal, the noticeable watering is performed by the automatic valve device in each area, and a delay is applied by the mechanical timer 73 incorporated in the automatic valve device. Is fully open and 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 device for water spray in a tunnel according to the present invention. This embodiment is a small-flow sprinkling means that performs a preliminary water sprinkling with a smaller flow rate than the full-scale water sprinkling on the front side in the vehicle traveling direction from the water spray sprinkling section during full-scale water sprinkling in the water spray sprinkling section corresponding to the fire position in the tunnel. Is provided.

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. The two-stage flow rate control device 81 has a structure similar to that of a mechanical timer, but a predetermined gap is formed between the cylinder 81a and the piston 81b, and the oil and the orifice are delayed. Until the piston 81b moves to the end, the fire extinguishing water supplied from the primary side to the cylinder 81a is passed through the gap to the head 80. Therefore, during this period, the water discharge is restricted and the noticeable 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 heads 82 are fully discharged from the beginning.
In the seventh embodiment described above, the number of heads 80 for the notice watering is one, but a plurality may be provided.

Embodiment 8 FIG.
FIG. 20 is a system diagram of an essential part showing still another example of the water spraying device for water spraying in a tunnel according to the present invention. In this embodiment, a small-flow sprinkling means is provided in the water spray sprinkling section corresponding to the fire position in the tunnel before the full-scale sprinkling is performed.

  In FIG. 20, a two-stage flow rate control device 91 is provided on the secondary side of the automatic valve 90 and before the branch pipe 92. This two-stage flow rate control device 91 has the same structure as the two-step flow rate control device 81 of the seventh embodiment, and a predetermined gap is formed between the cylinder 91a and the piston 91b. The noticeable water discharge of the flow rate is made, and the full water discharge is made only when the piston 91b moves to the end.

  In the seventh and eighth embodiments described above, an annular clearance channel is provided between the cylinders 81a and 91a and the pistons 81b and 91b of the two-stage flow rate control devices 81 and 91 in order to reduce the flow rate. Instead of an annular gap, a groove-like flow path formed in the pistons 81b and 91b may be used. Also, a flow path for a small flow rate is provided between the cylinders 81a and 91a and the secondary side pipe, or between the primary side pipe and the secondary side pipe, and the flow path between the cylinders 81a and 91a and the pistons 81b and 91b is eliminated. You may make it do.

  In the seventh and eighth embodiments described above, an annular clearance channel for a small flow rate is provided between the cylinders 81a and 91a of the two-stage flow rate control devices 81 and 91 and the pistons 81b and 91b. If the shape of the pistons 81b and 91b is 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 can be increased.

It is a figure explaining the arrangement | positioning state of the water spray water spraying equipment in a tunnel. It is a figure which shows the mode of the noticeable watering of the water spray watering equipment in a tunnel of this invention. It is a systematic diagram of the principal part explaining a recirculation valve system. It is a systematic diagram of the principal part explaining a pressure control valve system. It is a systematic diagram of the principal part explaining a notice watering pump system. It is a systematic diagram of the principal part explaining an inverter control system. It is a systematic diagram of the principal part explaining an electric butterfly valve system. It is a systematic diagram of the principal part explaining a pressure regulating valve system. It is a systematic diagram of the principal part explaining a bypass circuit system. It is a figure which shows the mode of the notice watering which shows the other example of the water spray watering equipment in a tunnel of this invention. It is a figure which shows the mode of notice watering which shows the further another example of the water spraying equipment in a tunnel of this invention. It is a figure which shows the mode of the monitoring state of the small flow sprinkling means which shows the further another example of the water spraying water spray equipment in this invention. It is a figure which shows the mode of notice watering of the small flow rate watering means of FIG. It is a figure which shows the mode of the full-scale watering of the small flow rate watering means of FIG. It is a figure which shows the mode of the monitoring state of the small flow sprinkling means which shows the further another example of the water spraying water spray equipment in this invention. It is a figure which shows the mode of notice watering of the small flow rate watering means of FIG. It is a figure which shows the mode of the full-scale watering of the small flow rate watering means of FIG. It is a systematic diagram of the principal part which shows the other example of the small flow sprinkling means which shows the other example of the water spraying water spraying equipment in a tunnel of this invention. It is a systematic diagram of the principal part which shows the further another example of the water spraying equipment in a tunnel of this invention. It is a systematic diagram of the principal part which shows the further another example of the water spraying equipment in a tunnel of this invention.

Explanation of symbols

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

Claims (5)

A small-flow sprinkling means is provided on the near side of the vehicle traveling direction from the water spray sprinkling section that carries out full-scale water spraying corresponding to the fire position in the tunnel, before the full-scale water spraying, to perform a preliminary water spray with a smaller flow rate than the full-scale water sprinkling. Tunnel water spray watering equipment characterized by that. The tunnel water spray watering facility according to claim 1 , wherein the preliminary watering is periodic watering with respect to time within the watering area. The tunnel water spray watering equipment according to claim 1 or 2 , wherein the notice watering increases the degree of warning as the water nears the fire point in the watering area. 3. The tunnel water spray watering facility according to claim 1, wherein the preliminary watering is performed by increasing watering and increasing the level of warning as the actual watering approaches in the watering area. The tunnel water spray watering facility according to claim 1, wherein the position where the preliminary watering is performed is a tunnel entrance.

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