JP2011188975A - Tunnel water spray equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide tunnel water spray equipment capable of performing an inspection by actual water discharge from a water spray head and notice water discharge by a simple configuration. <P>SOLUTION: The water spray head 18 connected to water spray piping 16 is arranged on a tunnel wall surface 10, and pressurized fire extinguishing water is discharged from the water spray head 18 to a vehicle traveling space in the case of a fire. The water spray head 18 is provided with a turning part for turning the water spray head 18 from a water discharge direction toward the vehicle traveling space to a water discharge direction toward the tunnel wall surface at the time of inspection. The water spray head 18 turned to the tunnel wall surface by the turning part is housed in a water collecting bucket 20 and the water discharge to the ambient is regulated during the inspection. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a tunnel water spray facility for supplying water for fire extinguishing to a water spray nozzle installed in a tunnel and discharging the water.

  2. Description of the Related Art Conventionally, emergency facilities have been installed in tunnels for exclusive use of automobiles and the like in order to protect people and vehicles from fire accidents that occur in the tunnel. Such emergency facilities include a fire detector and emergency telephone for fire monitoring and reporting, and a fire extinguisher and water spray head for tunnel protection to extinguish the fire and prevent fire spread. A water spray facility is provided to discharge water.

  The water spray facility is equipped with one automatic valve device for each 50m-interval water discharge unit, and water is supplied simultaneously to the water spray heads arranged at 5m intervals by supplying pressurized fire-fighting water from the automatic valve device. Let In preparation for emergencies, the water spray facility conducts regular inspections that actually discharge water from the water spray head.

  However, during regular inspections where actual water is discharged, the traffic in the tunnel is completely blocked and water is actually discharged from the water spray nozzle. It takes a lot.

  In order to solve such problems, conventionally, a dedicated water collection truck is used, and each water spray head is covered with a container mounted on the water collection truck, and all the water discharged from the water spray head is discharged into the tunnel. The amount of water discharged from the collected and collected water is measured to confirm the water discharge performance, so that it can be easily inspected without the need to block traffic (Patent Document 1).

  As another method, the water spray head is actually discharged toward the tunnel wall surface at the time of inspection so that the inspection can be performed with a small number of people without requiring traffic interruption (Patent Document 2).

  In order to warn that full-scale water discharge from the water spray head will be performed, the water spray equipment is provided with a notice water discharge function that performs a small-scale notice water discharge prior to full-scale water discharge.

The method of preliminary water discharge includes a method of reducing the primary flow rate to the automatic valve, a method of reducing the pressure, a method of switching from low pressure to normal pressure step by step with the automatic valve, There is a method of switching the opening of the water valve in two stages (Patent Document 3).

JP-A-11-319140 Japanese Patent Laid-Open No. 11-004908 JP 2002-355324 A

  However, in the inspection using a water collection vehicle, it takes time to set the containers provided on the water collection vehicle arm to multiple water spray heads, and it is not necessary to block the entire traffic, but the water collection vehicle is installed. In order to secure a place safely, there is a problem that traffic regulation is required for one lane near the wall surface.

  In addition, in the inspection of actually discharging the water spray head toward the tunnel wall surface, in the case of a multi-head equipped with a plurality of nozzles to ensure a wide water discharge area, the nozzle that discharges water toward the tunnel wall surface behind the head is: When the water spray head is turned in the opposite direction, the water is discharged toward the tunnel traveling space, and thus there is a problem that lane regulation and traffic blocking are necessary.

  For tunnel water spray equipment that gives a notice before full-scale water discharge, basically use a water spray head as it is, and reduce the pressure or flow rate of pressurized fire-fighting water supplied to the water spray head to give a small-volume notice water discharge. Therefore, a mechanism and equipment to adjust the pressure or flow rate of fire extinguishing water in two steps are required, and the handling flow rate to supply the specified amount to all water spray heads connected to the secondary side of the automatic valve is Since it is necessary to control a large number of automatic valves and related equipment, there is a problem that the equipment configuration becomes complicated and the cost is increased.

It is an object of the present invention to provide a tunnel water spraying facility that enables a water spray head to be inspected by actual water discharge and changed from preliminary water discharge to full-scale water discharge with a simple configuration.

The present invention is a tunnel water spray facility in which a water spray head connected to a water spray pipe is disposed in a tunnel, and water for pressurized fire extinguishing is discharged from the water spray head to a water discharge target space in the tunnel in the event of a fire.
A swivel unit that swirls the water spray head from a water discharge position toward the water discharge target space;
A water collection bucket that houses the water spray head swirled by the swivel unit and regulates water discharge to the surroundings;
Is provided.

  Here, the water collection bucket is a box member formed with an opening at a part that enters and exits by swirling of the water spray head, and a drain outlet for draining fire-extinguishing water is provided on the side of the tunnel wall that has been collected during water discharge.

  The water spray head is placed in a lateral position along the tunnel wall at the tip of the water spray pipe that is lowered downward from the tunnel wall, and the water collection bucket is placed in a lateral position along the tunnel wall on the opposite side of the water spray head. The swivel mechanism swivels the water spray head along the tunnel wall surface and puts it in and out of the water collecting bucket.

  The water spray head is placed in front of the tunnel wall at the front end of the water spray pipe that is lowered downward from the tunnel wall, and the water collection bucket is placed between the water spray pipe on the opposite side of the water spray head and the tunnel wall. Then, the swivel part swivels the water spray head with respect to the surface orthogonal to the tunnel wall surface and puts it in and out of the water collecting bucket.

  An inspection device for checking the water discharge condition can be connected to the drain outlet.

  Furthermore, the position detection part which detects the turning position of a water spray head is provided.

In addition, when a fire breaks out, the swivel part of some of the water spray heads that discharge water into the water discharge target space is turned and stored in the water collecting bucket, and after a predetermined time, the swivel is restored to the normal position to discharge water.

According to the tunnel water spray facility of the present invention, the direction of the water spray head is swung from the water discharge target space by remote control, and the water spray head is stored in the box-shaped water collecting bucket, and the actual water discharge from the water spray head. The collected water is collected inside the collection bucket and can be easily subjected to regular inspection or actual discharge with actual water discharge.

Explanatory drawing which showed the installation state of the tunnel water spray equipment by this invention in the tunnel cross section Explanatory drawing which expanded the water spray head periphery of FIG. 1, and showed embodiment of this invention Explanatory drawing which took out and showed the water collection bucket of FIG. Explanatory drawing which showed embodiment of FIG. 2 seeing from the water discharge direction Explanatory drawing which looked at the water spray head in embodiment of FIG. Explanatory drawing which showed the water spray head accommodation state and the actual water discharge at the time of the inspection in embodiment of FIG. Explanatory drawing which expanded the circumference of the water spray head and showed other embodiments of the present invention Explanatory drawing which looked at the water spray head in embodiment of FIG. Explanatory drawing which showed the water spray head accommodation state and the actual water discharge at the time of the inspection in embodiment of FIG. Explanatory drawing which expanded the water spray head periphery of FIG. 1, and showed other embodiment of this invention. Explanatory drawing which looked at the embodiment of FIG. 10 from the water discharge direction Explanatory drawing which looked at the water spray head in embodiment of FIG. Explanatory drawing which showed the water spray head accommodation state and the actual water discharge at the time of the inspection in embodiment of FIG.

  FIG. 1 is an explanatory view showing the installation state of a tunnel water spray facility according to the present invention in a cross section of a tunnel. In FIG. 1, a water spray pipe 16 is erected from the upper part of the tunnel wall surface 10 through the concrete frame, and a water spray head 18 is provided at a portion protruding upward from the tunnel wall surface 10.

  The water spray pipe 16 is branched and connected to the water supply main pipe 12, and an automatic valve device 14 is provided on the way. The automatic valve device 14 is opened and controlled by remote control in the event of a fire in the tunnel. The water supply head 12 is supplied with water for extinguishing water pressurized from the fire pump through the water spray pipe 16 to the water spray head 18. The water for fire extinguishing is discharged into the water discharge target space including the tunnel road surface 11 and the tunnel wall surface 10 to protect the tunnel structure and suppress fire.

  In the water spray facility of this embodiment, the water collection bucket 20 is disposed in the vicinity of the water spray head 18. The water spray head 18 is provided with a swivel portion for directing the water discharge direction in the reverse direction. During the inspection, the water spray head 18 is swung in the reverse direction with respect to the vehicle travel space, and the water spray head 18 swung in the reverse direction at this time. Is stored in the water collection bucket 20.

  FIG. 2 is an explanatory view showing an embodiment of the present invention by enlarging the periphery of the water spray head of FIG. In FIG. 2, the water spray pipe 16 taken out from the tunnel wall surface 10 in the lateral direction is connected with a downward pipe 22 at the front end, and the water spray head 18 is pivotably attached to the front end via a swivel joint 24. is doing.

  The swivel joint 24 rotatably supports the water spray head 18 side with the falling pipe 22 as a fixed side. The water spray head 18 is turned by meshing and rotating a gear driven by a motor 26 fixed to the falling pipe 22 side with a gear 32 provided on the swivel joint 24. The motor 26 is driven by a remote control unit (not shown). The remote control unit of the motor 26 may be provided at a site in the tunnel, or may be provided in a central monitoring room or the like to perform remote control.

  In this embodiment, the water spraying head 18 is a multi-head having an upper nozzle 28a, a front nozzle 28b, a lower nozzle 28c, and a rear nozzle 28d.

  A water collection bucket 20 is disposed beside the water spraying head 18 that is pivotably attached to the falling pipe 22 via a swivel joint 24, and the water collection bucket 20 is fixed to the tunnel wall surface 10 by an attachment angle 30. .

  FIG. 3 is an explanatory view showing the water collecting bucket 20 of FIG. 2 taken out. FIG. 3A shows a side surface and FIG. 3B shows a front surface. In FIG. 3, the water collecting bucket 20 forms a box-shaped main body 36 having box plates on each of the upper, lower, left and right sides, the bottom surface is inclined obliquely downward as it goes rearward, and a drain port 40 is formed at the lower end. ing. An opening 38 is provided on the side and the front of the box-shaped main body 36 so that the water spray head 18 swiveling from the opening 38 can be taken in and out.

  FIG. 4 is an explanatory view showing the embodiment of FIG. 2 as seen from the water discharge direction toward the tunnel wall surface. In FIG. 4, a motor 26 is fixed to the right side surface of the falling pipe 22 connected to the tip of the water spray pipe 16, the drive shaft of the motor 26 is taken down, and a gear 34 is attached to the tip. The gear 34 meshes with a gear 32 provided on the swivel joint 24, and the swivel joint 24 is rotated via the gear 32 by the rotation drive of the gear 34 by the motor 26, so that the water spray head 18 can be stored in the water collection bucket 20. .

  In the present embodiment, the water spray head 18 that is pivotably attached to the lower part of the falling pipe 22 via the swivel joint 24 is connected in the lateral direction on the left side along the tunnel wall surface 10. Therefore, in order to store the water spray head 18 in the water collection bucket 20, the box-shaped main body 36 is opened from the opening 38 by turning 180 ° clockwise from the position of the water spray head 18 shown in the figure as viewed from the plane. Can be stored inside.

  FIG. 5 is an explanatory view showing the water spray head in the embodiment of FIG. FIG. 5A shows a normal time, and the water spraying head 18 projects in the lateral direction on the right side along the tunnel wall surface 10, and the direction perpendicular to the tunnel wall surface 10 is the water radiation direction.

  At the time of inspection, the water spray head 18 is rotated by 180 ° as indicated by an arrow about the point P which is the center of the falling pipe by driving by the motor 26, and the water spray head 18 is collected as shown in FIG. The inside of the box-shaped main body 36 is accommodated from the opening 38 of the bucket 20.

  FIG. 6 is an explanatory view showing a water spray head housing state and actual water discharge during inspection in the embodiment of FIG. In FIG. 6, as shown in FIG. 5 (B), the water spray head 18 is swung and stored in the water collecting bucket 20, and in this state, the actual water discharge for inspection, that is, the automatic valve device shown in FIG. 14 is opened by remote operation or on-site operation, and water for pressurized fire extinguishing is supplied, and water is discharged from the upper nozzle 28a, the front nozzle 28b, the lower nozzle 28c, and the rear nozzle 28d of the water spray head 18.

  At this time, the upper nozzle 28a, the front nozzle 28b, and the lower nozzle 28c face the tunnel wall surface 10 in the opposite direction to the normal time due to the turning of the water spray head 18, and the water discharged from each is directed to the back side of the water collecting bucket 20. It is discharged and never discharged into the tunnel. Further, the rear head 28d is directed forward by turning the water spray head 18 in the opposite direction, but the rear nozzle 28d is discharged toward the bottom of the water collecting bucket 20, and is discharged into the tunnel. Never happen. The water discharged into the water collection bucket 20 by the water spray head 18 is collected at the drain port 40 along the bottom portion that is inclined downward and drained downward toward the tunnel wall surface 10.

  When actual water discharge is performed from the water spray head 18 at the time of inspection, it is necessary to visually check the water discharge state from each nozzle. In this case, the water storage bucket 20 can easily store the internal storage state from the outside. By forming the opening 38 large enough to be confirmed, it is possible to visually confirm the water discharge state of each nozzle. In addition, you may form the water collection bucket 20 with a transparent member so that visual confirmation may be easy.

  Here, the opening 38 provided in the water collecting bucket 20 is relatively large, and when the water spray head 18 is housed and actual water discharge is performed, the water bounced off in the box-shaped main body 36 from the opening 38 into the tunnel may jump out. is assumed. In order to prevent water from splashing from the opening 38 into the tunnel due to such actual water discharge in the water collecting bucket 20, a string-like curtain is stretched around the opening 38 to prevent the water spraying head from being put in and out. Although there is no, scattering of water in the state accommodated inside can be sufficiently suppressed by covering the opening 38 by the string-like curtain.

  When a string-like curtain is suspended in the opening 38, the water spraying state of the water spray head 18 accommodated in the interior cannot be visually confirmed from the outside. As a countermeasure, transparent glass is provided on the side surface opposite to the opening 38. What is necessary is just to provide a window so that the state of water discharge inside can be confirmed.

  For performance evaluation by actual water discharge at the time of inspection, a flow meter is installed in the main water supply near the tunnel entrance, the amount of water discharged per normal water spray head is determined in advance, and the flow rate is measured by the flow meter at the time of inspection. What is necessary is just to compare and judge with the normal amount of water discharge determined by the number of water spray heads that have actually discharged water.

  As another performance evaluation, a water collection container may be connected to the drain port 40 of the water collection bucket 20 via a pipe, and the amount of water discharged for each water spray head may be measured and checked.

  FIG. 7 is an explanatory view showing another embodiment by enlarging the periphery of the water spray head used in the tunnel water spray facility according to the present invention, and in this embodiment, in the range of 180 ° perpendicular to the tunnel wall surface. It is characterized in that the water spray head is swung to perform inspection.

  In FIG. 7, a falling pipe 22 is connected to the tip of the water spray pipe 16 taken out from the tunnel wall surface 10, a swivel joint 24 is connected to the lower part of the falling pipe 22, and a lower side of the swivel joint 24. An extension tube 42 is connected to the rotation side through an elbow, and the water spray head 18 is attached to the tip of the extension tube 42.

  The water spray head 18 is rotated by the swivel joint 24 by driving the gear 32 by the gear engagement of the motor 26 fixed to the falling pipe 22 side. In this embodiment, the water spray head 18 projecting forward by the projecting pipe 42 is normally rotated 180 ° rearward on a plane orthogonal to the tunnel wall surface 10 at the time of inspection.

  For this reason, the water collection bucket 20 is arranged with the mounting angle 30 between the tunnel wall surface 10 which is behind the water spray head 18. The water collection bucket 20 is formed with an opening 38 on the side and front of a box-shaped main body 38 whose upper, lower, left, and right sides are closed with box plates, and can accommodate the water spray head 18 swung by the motor 26.

  FIG. 8 is an explanatory view showing the water spray head in the embodiment of FIG. FIG. 8 (A) is a normal time, and the water spray head 18 is positioned forward by the overhanging pipe 42 and directed rearward on a plane perpendicular to the tunnel wall surface 10 around the point P that is the center of the falling pipe. As shown by the arrows, it is supported so that it can turn 180 °.

  The water collection bucket 20 disposed between the water spray head 18 and the tunnel wall surface 10 forms an opening 38 over the right side and the front surface where the water spray head 18 is swung, and opens the swirling water spray head 18. 38 can be stored in the box-shaped main body 36.

  FIG. 8B shows the time of inspection, and the water spray head 18 is stored in the box-shaped main body 36 from the opening 38 by turning 180 ° counterclockwise from the normal time of FIG. 8A. Yes.

  FIG. 9 is an explanatory diagram showing a water spray head housing state and actual water discharge during inspection in the embodiment of FIG. In FIG. 9, the water spray head is turned 180 ° backward from the normal state shown in FIG. 7 and is stored in the water collection bucket 20.

  In this state, when the automatic valve device 14 shown in FIG. 1 is opened by remote operation or manual operation on site to supply pressurized fire-fighting water, the water spray head 18 accommodated in the water collection bucket 20 is provided. Pressurized fire extinguishing water is discharged from each of the upper nozzle 28a, the front nozzle 28b, the lower nozzle 28c, and the rear nozzle 28d.

  Here, the upper nozzle 28a, the front nozzle 28b, and the lower nozzle 28c are directed to the tunnel wall surface 10 side by the 180 ° rotation of the water spray head 18, and the water discharged from each nozzle hits the back surface of the box-shaped main body 36. It is not discharged into the tunnel, but is drained from the drain port 40 to the tunnel wall surface 10 side.

  In addition, the rear nozzle 28b is directed forward by a reverse 180 ° turn of the water spray head 18, but the water discharge is directed toward the bottom of the box-shaped main body 36, and the water is collected without discharging into the tunnel. Water is discharged into the bucket 20 and drained from the drain port 40 to the tunnel wall surface side.

  Here, even in the embodiment of FIGS. 7 to 9, since the water discharged from the opening 38 of the water collecting bucket 20 may jump out into the tunnel, a string-like curtain is stretched around the opening 38 to tunnel the tunnel. You may make it prevent the discharge | release of the discharge | released water to the inside. In this case, an observation glass window may be provided on the left side surface of the water collection bucket 20 shown in FIG. 8, for example, so that the internal water discharge state can be visually observed from the outside.

  FIG. 10 is an explanatory view showing an embodiment of the present invention by enlarging the periphery of the water spray head of FIG. 1, and is characterized in that the water spray head is swung from the tunnel wall surface side and stored in the water collecting bucket. And

  In FIG. 10, the water spray pipe 16 taken out from the tunnel wall surface 10 in the lateral direction is connected with a downward pipe 22 at the front end, and the water spray head 18 is pivotably attached to the front end via a swivel joint 24. is doing.

  The swivel joint 24 rotatably supports the water spray head 18 side with the falling pipe 22 as a fixed side. The water spray head 18 is turned by meshing and rotating a gear driven by a motor 26 fixed to the falling pipe 22 side with a gear 32 provided on the swivel joint 24. As the water spraying head 18, a multi-head head including an upper nozzle 28a, a front nozzle 28b, a lower nozzle 28c, and a rear nozzle 28d is used.

  A water collection bucket 20 is disposed beside the water spray head 18 that is pivotably attached to the falling pipe 22 via a swivel joint 24, and the water collection bucket 20 is divided into the water spray pipe 16 through an attachment angle 46. It is fixed by a pipe fixing portion 44 that becomes a ring. The water collecting bucket 20 may be attached and fixed to the falling pipe 22.

  The water collecting bucket 20 forms a box-shaped main body 36 having box plates on each of the upper, lower, left and right sides, and the bottom surface is inclined obliquely downward as it goes rearward, and the back surface facing the tunnel wall surface 10 is an opening 30. Following the opening 38 on the back surface, an opening 38a is provided on the side surface.

  In this embodiment, at the time of inspection, the water spray head 18 is turned to the tunnel wall surface 10 side and stored in the water collection bucket 20 from the opening 38 on the back surface.

  FIG. 10 is an explanatory view showing the embodiment of FIG. 11 as viewed from the water discharge direction toward the tunnel wall surface. A motor 26 is fixed to the right side surface of the falling pipe 22 connected to the tip of the water spray pipe 16. The drive shaft of the motor 26 is taken out downward and a gear 34 is attached to the tip. The gear 34 meshes with a gear 32 provided on the swivel joint 24, and the gear 34 is driven to rotate by the motor 26 via the gear 32. The swivel joint 24 is rotated so that the water spray head 18 can be stored in the water collection bucket 20.

  In this embodiment, in order to store the water spray head 18 in the water collection bucket 20, the motor 26 is rotated 180 ° counterclockwise as viewed from the plane from the position of the water spray head 18 shown in the figure. It can be accommodated in the box-shaped main body 36 from the opening 38 on the back surface.

  FIG. 12 is an explanatory view showing the water spray head in the embodiment of FIG. FIG. 12A shows a normal time, and the water spray head 18 projects in the lateral direction on the right side along the tunnel wall surface 10 and the direction perpendicular to the tunnel wall surface 10 is the water radiation direction.

  At the time of inspection, the water spray head 18 is rotated by 180 ° as indicated by an arrow around the point P that is the center of the falling pipe by driving by the motor 26, and the water spray head 18 is collected as shown in FIG. The inside of the box-shaped main body 36 is accommodated from the opening 38 of the bucket 20.

  FIG. 13 is an explanatory view showing a water spray head housing state and actual water discharge during inspection in the embodiment of FIG. In FIG. 13, as shown in FIG. 12 (B), the water spray head 18 is swung and stored in the water collecting bucket 20, and in this state, the actual water discharge for inspection, that is, the automatic valve device shown in FIG. 14 is opened by remote operation or on-site operation, and water for pressurized fire extinguishing is supplied, and water is discharged from the upper nozzle 28a, the front nozzle 28b, the lower nozzle 28c, and the rear nozzle 28d of the water spray head 18.

  For performance evaluation by actual water discharge at the time of inspection, a flow meter is installed in the main water supply near the tunnel entrance, the amount of water discharged per normal water spray head is determined in advance, and the flow rate is measured by the flow meter at the time of inspection. What is necessary is just to compare and judge the amount of water discharged under normal conditions determined by the number of heads that have actually discharged water.

  In the above-described embodiment, the water spray head is swiveled 180 degrees horizontally and stored in the water collecting bucket. However, the water spray head may be swung 90 degrees and stored in the water collecting bucket. For example, in the case of FIG. 5, a water collection bucket may be disposed between the falling pipe and the tunnel wall, and the water spray head may be rotated 90 degrees clockwise and stored in the water collection bucket.

  In the case of FIG. 8, a water collection bucket is disposed on the right side of the falling pipe, for example, and rotated 90 degrees clockwise of the water spray head and stored in the water collection box.

  In the above embodiment, the water spray head provided on the rotation side of the swivel joint is swung by the motor and the swivel unit is stored in the water collection bucket. However, the water spray head is swung in the water collection bucket. If it is a structure which can be accommodated by this, an appropriate turning part or turning mechanism such as a moving means using a belt or an elastic body or rotation using water pressure can be used.

  In the above embodiment, a multi-head having four nozzles such as an upper nozzle, a front nozzle, a lower nozzle, and a rear nozzle is taken as an example. The water spray head can be applied as it is.

  Moreover, although said embodiment took the box shape as an example of a water collection bucket, if it is a structure which can accommodate a water spray head inside, it will contain a suitable shape.

  Further, in the embodiments other than FIGS. 10 to 13 including FIGS. 2 to 8, the water collection bucket 20 is installed on the tunnel wall surface 10, but as in the embodiments of FIGS. 10 to 13, You may make it arrange | position to the water supply piping 16 or the falling piping 22 taken out from the tunnel wall surface.

  Further, in the above embodiment, the water discharged into the water collecting bucket 20 is drained to the tunnel wall surface 10 side, but the bottom side of the drain bucket 20 is closed so as not to drain into the tunnel. Then, a drain pipe may be connected to the bottom to drain the outside.

  When a drain pipe is connected to the water collecting bucket, an inspection port for collecting the discharged water is taken out through the on-off valve in the middle of the drain pipe, and an on-off valve is provided on the drain pipe that branches the inspection port. By closing the open / close valve and opening the open / close valve of the inspection port, an inspection container as an inspection device may be connected to the inspection port so that water for extinguishing can be collected and the water discharge state can be checked. In this case, it is desirable that the positions of the inspection port and the on-off valve are lowered to the height of the supervisor passage so that the inspection can be easily performed. A flow meter may be connected to the inspection port as an inspection device, and the water spray head may be inspected by measuring the flow rate.

  Further, a head position detection unit such as a limit switch for detecting that the position of the water spraying head 18 swung at the time of inspection is within the specified position of the water collecting bucket 20 and that the water discharge position has been restored after the inspection is provided with water. You may make it provide in a spray head or a water collection bucket, and may perform inspection and recovery control reliably.

  When a fire occurs at the time of inspection, the water spray head may be automatically changed from the inspection position to the normal water discharge position.

  In the present embodiment, the case where the water spray head is swung at the time of inspection has been described. However, the water discharge control by turning the water spray head is not limited to the time of inspection but may be performed at the time of water discharge of an actual fire. In other words, in a tunnel water spray facility, if water is suddenly discharged from all the water spray heads into the target discharge space, the driver's field of view is obstructed and operation may be hindered, resulting in a secondary disaster. . Therefore, in the initial stage of water discharge, a part of the water spraying head to be discharged is turned and stored in the water collecting bucket, and only a part of the water spraying head is discharged into the water discharge target space, and the water collecting bucket is stored after a predetermined time. The water spraying head thus returned may be returned to the normal state and water may be discharged from all the water spraying heads into the water discharge target space. For example, every other water spray head may be housed in order to ensure the visibility of the driver and evacuees.

The present invention includes appropriate modifications that do not impair the objects and advantages thereof, and is not limited by the numerical values shown in the above embodiments.

10: Tunnel wall 16: Water spray pipe 18: Water spray head 20: Water collecting bucket 24: Swivel joint 26: Motor 38: Opening 40: Drainage port

Claims (7)

In a tunnel water spray facility in which a water spray head connected to a water spray pipe is arranged in a tunnel, and water for pressurized fire extinguishing is discharged from the water spray head to a water discharge target space in the tunnel in the event of a fire,
A swivel unit that swivels the water spray head from a water discharge position toward the water discharge target space;
A water collection bucket that houses the water spray head swirled by the swivel unit and regulates water discharge to the surroundings;
A tunnel water spray facility characterized by the provision of
2. The tunnel water spray facility according to claim 1, wherein the water collection bucket is a box member having an opening formed at a part of the water spray head that is turned in and out by swirling of the water spray head, and the water for fire extinguishing is applied to a tunnel wall surface that collects water during discharge. A tunnel water spray facility characterized by providing a drain outlet for draining water.
2. The tunnel water spray facility according to claim 1, wherein the water spray head is disposed in a lateral position along the tunnel wall surface at a tip of a water spray pipe that is lowered downward from the tunnel wall surface, and the water collecting bucket is A tunnel water spray facility, which is disposed in a lateral position along the tunnel wall surface on the opposite side of the spray head, and wherein the swivel mechanism swivels the water spray head along the tunnel wall surface and puts it in and out of the water collecting bucket. .
2. The tunnel water spray facility according to claim 1, wherein the water spray head is disposed in front of the water spray pipe at a front end perpendicular to the tunnel wall surface of the water spray pipe that is lowered downward from the tunnel wall surface. It is arranged between the water spray pipe on the opposite side of the head and the tunnel wall surface, and the swivel mechanism swivels the water spray head with respect to a surface orthogonal to the tunnel wall surface and puts it in and out of the water collecting bucket. Tunnel water spraying equipment.
3. The tunnel water spray facility according to claim 2, wherein an inspection device for checking a water discharge state can be connected to the drain outlet.
2. The tunnel water spray facility according to claim 1, further comprising a position detection unit that detects a turning position of the water spray head.
  The tunnel water spray facility according to claim 1, wherein the swivel part of a part of the water spray head that discharges water into the water discharge target space in the event of a fire is swung and stored in the water collecting bucket, and after a predetermined time, the normal position is reached. Tunnel water spraying equipment characterized by turning off and discharging water.

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