JP2018007915A - Tunnel fire hydrant apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability and reliability by enabling water discharge control by a manual operation without influencing an installation space of a hose storage part secured by separately arranging a water discharge control mechanism.SOLUTION: A hose storage part 44 in which a hose 54 with a nozzle is stored is liftably/lowerably disposed in a watchman's passage 14 provided along a tunnel side wall by a lift mechanism 46, and a water discharge control mechanism is separately arranged in a management passage 20 located thereunder. A deluge valve is arranged in the water discharge control mechanism, and a pilot manual valve for opening the deluge valve by supply of a pilot pressure is arranged at a hose storage part 44 side. This configuration allows a user to start water discharge by manual operation.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fire hydrant facility in a tunnel in which a hose housing part in which a hose with a nozzle is housed and a water discharge control mechanism in which valves are housed are separately arranged.

  Conventionally, fire hydrant devices have been provided as emergency equipment for tunnels installed in tunnels such as expressways and motorway roads, and the fire hydrant device has a nozzle at the tip of the fire hydrant storage part of the housing with an openable fire hydrant door. For example, two fire extinguishers are housed in a fire extinguisher housing section having a fire extinguisher door that can be freely opened and closed.

  Such a fire hydrant apparatus is installed at intervals of, for example, 50 meters along a side wall facing a supervisor passage provided in the tunnel. The supervisor passage is provided as a side wall passage that is about 1 meter higher than the road surface, and it is possible to inspect various devices including fire hydrants installed safely in the tunnel without hindering vehicle traffic in the tunnel. It is said.

  When a vehicle accident involving a fire occurs, users such as the driver of the accident vehicle open the fire hydrant door of the fire hydrant device, pull out the hose with a nozzle, and operate the fire hydrant valve opening / closing lever to operate the fire pump equipment Fire extinguishing work can be performed by starting and discharging water.

JP 2008-055024 A JP 2009-285126 A

  However, in such a conventional fire hydrant device installed in the tunnel, it was installed along the tunnel side wall facing the observer passage, so that when a fire caused by a vehicle accident occurred, the user could It is necessary to reach out to the fire hydrant device installed on the side wall of the tunnel beyond the passage, open the fire hydrant door, pull out the hose to perform fire extinguishing work, and the fire hydrant device is installed at a high position away from the road surface Some people may have to go up and operate the guard passage without reaching their hands, and some guard passages are equipped with handrails that interfere with fire fighting operations and are difficult to handle. There was a case.

  In order to solve this problem, the applicant of the present application has proposed a fire hydrant facility that can be easily and easily handled from the road side and the supervisor passage side. In this fire hydrant equipment, the hose storage part in which the hose with the nozzle is stored is arranged on the side of the supervisor passage, and it is difficult for the water discharge control mechanism provided with valves to secure the installation space in the supervisor passage. Therefore, it is arranged in a management passage formed on the lower side of the floor slab where the road is formed.

  In this way, when the water discharge control mechanism is separated and arranged in the management passage with respect to the hose storage part on the side of the monitoring staff passage, a remote fire hydrant valve using an electric valve is arranged in the water discharge control mechanism and provided on the hose storage part side. The remote fire hydrant valve is opened by operating the water discharge switch, and water for fire extinguishing is supplied to the hose with a nozzle drawn out from the hose housing.

  By the way, depending on the fire hydrant equipment, it is necessary to start and stop the water discharge by manually operating the fire hydrant opening / closing lever provided on the side of the monitoring staff. It is possible to do.

  However, if the fire hydrant valve is arranged on the hose housing side, the merit of reducing the installation space on the supervisor passage by disposing the water discharge control mechanism including valves separately on the management passage side will be impaired, This point remains as a new solution issue.

  An object of this invention is to provide the fire hydrant installation in a tunnel which enables water discharge control by manual operation, without affecting the installation space of the hose accommodating part ensured by the separate arrangement of the water discharge control mechanism.

(Fire hydrant equipment in the tunnel)
The present invention is a fire hydrant facility in a tunnel in which a hose storage part in which a hose with a nozzle is stored and a water discharge control mechanism for controlling the supply of fire-fighting water to the hose with a nozzle are separately arranged.
A simultaneous release valve that is provided in the water discharge control mechanism and that supplies water for fire extinguishing to the hose storage section by being opened by receiving supply of pilot pressure,
An operation unit provided in the hose storage unit and operated at a water discharge position and a water discharge stop position;
A pilot manual valve which is provided in the hose storage part and is opened and closed by operation of the operation part;
A pilot circuit section for supplying pilot pressure to the simultaneous opening valve by opening the pilot manual valve and driving the opening, and releasing the pilot pressure from the simultaneous opening valve by closing operation of the pilot manual valve;
Is provided.

(Pilot manual valve lever direct operation section)
The operation unit includes an open / close lever that is connected to a valve body rotation shaft of the pilot manual valve to open and close.

(Remote operation with link cable)
The operation unit opens and closes the operation of the opening / closing lever by transmitting it to the valve body rotating shaft of the pilot manual valve through the link cable.

(Pilot circuit using a manual on-off valve)
The pilot manual valve is an open / close valve that switches between open and closed positions.
The simultaneous opening valve is provided with an opening / closing drive unit that is driven to open by supplying pilot pressure to the cylinder chamber and is driven to close by discharging pilot pressure from the cylinder chamber.
The pilot circuit section
An activation pilot pipe for supplying pilot pressure to the cylinder chamber of the simultaneous release valve by opening the pilot manual valve;
An orifice that is provided in a stop pilot pipe that communicates the cylinder chamber of the simultaneous release valve to the secondary side, and that discharges pilot pressure from the cylinder chamber with the pilot manual valve closed;
Is provided.

(Pilot circuit using a three-way switching valve)
The pilot manual valve is a three-way switching valve that can be switched between a water discharge position and a water discharge stop position.
The simultaneous opening valve is provided with an opening / closing drive unit that is driven to open by supplying pilot pressure to the cylinder chamber and is driven to close by discharging pilot pressure from the cylinder chamber.
The pilot circuit section
A start-up pilot pipe for supplying pilot pressure to the cylinder chamber of the simultaneous release valve by switching operation of the three-way switching valve to the water discharge position;
A pilot pipe for stopping that discharges pilot pressure from the cylinder chamber of the simultaneous release valve by switching operation to the water discharge stop position of the three-way switching valve,
Is provided.

(Configuration other than simultaneous release valve)
The water discharge control mechanism
A check valve connected to the primary side of the simultaneous release valve;
An automatic pressure regulating valve connected to the secondary side of the simultaneous release valve;
A gate valve provided between the simultaneous opening valve and the automatic pressure regulating valve;
A test drain valve branched and connected between the gate valve and the simultaneous release valve;
Is provided.

(Constant flow valve)
A constant flow valve is provided instead of the automatic pressure regulating valve.

(Separate installation of elevating hose storage and water discharge control mechanism)
The hose storage portion is normally stored in the monitoring member passage by the lifting mechanism during monitoring, and when using a fire hydrant, the hose storage portion is raised to the exposed position on the monitoring member passage by the operation of the lifting mechanism,
The water discharge control mechanism is installed in a management passage formed below the supervisor passage.

(Separate installation of fixed hose storage and water discharge control mechanism)
The hose storage part is installed inside the fire hydrant door provided in the opening formed by hanging from the road surface of the observer passage to the wall surface facing the road,
The water discharge control mechanism is installed in a management passage formed below the supervisor passage.

(Basic effect)
The present invention provides a water discharge control mechanism in a fire hydrant facility in a tunnel in which a hose storage portion in which a hose with a nozzle is stored and a water discharge control mechanism for controlling the supply of fire water to the hose with a nozzle are separately arranged. , A simultaneous release valve that supplies fire-fighting water to the hose housing part by being opened by receiving a supply of pilot pressure, an operation part that is provided in the hose housing part and is operated to a water discharge position and a water discharge stop position, and a hose A pilot manual valve provided in the storage unit that is opened and closed by operating the operation unit to the water discharge stop position, and a pilot pressure is supplied to the simultaneous release valve by opening the pilot manual valve to drive it open, and the pilot manual valve is closed And a pilot circuit section that is operated to release the pilot pressure from the simultaneous release valve and to drive it closed. The pilot manual valve that controls the opening and closing of the simultaneous opening valve provided in the control mechanism is only provided, and the pilot manual valve is small because it controls the pilot pressure against the simultaneous opening valve, and the pilot pipe is also connected to the water supply pipe. Compared with a sufficiently thin pipe, a pilot manual valve that can be opened and closed by operating the operation unit is provided on the hose storage side, so the installation space for the hose storage hardly increases, and a water discharge control mechanism including a simultaneous release valve is installed. It is possible to start and stop the water discharge by manual operation without losing the merit of reducing the installation space of the hose storage part by separating and arranging.

(Effects of the pilot manual valve lever direct operation section)
In addition, since the operation unit is provided with an open / close lever that is connected to the valve body rotation shaft of the pilot manual valve and opens and closes, it is possible to start and stop water discharge by manual operation by a simple operation unit mechanism.

(Effects of remote operation with link cable)
In addition, since the operation unit transmits the operation of the open / close lever to the valve body rotation shaft of the pilot manual valve via the link cable, it is opened and closed. And the degree of freedom in the arrangement of the operation unit and the pilot passive valve can be increased.

(Effects of pilot circuit using manual open / close valve)
The pilot manual valve is an open / close valve that switches between an open position and a closed position. The simultaneous open valve is open / close driven by supplying pilot pressure to the cylinder chamber and closed by exhausting pilot pressure from the cylinder chamber. The pilot circuit section is used for stopping the pilot pipe for starting to supply pilot pressure to the cylinder chamber of the simultaneous release valve by opening the pilot manual valve and the cylinder chamber of the simultaneous release valve to the secondary side. Since the pilot piping is provided with an orifice that discharges pilot pressure from the cylinder chamber with the pilot manual valve closed, a small on-off valve can be used as the pilot manual valve. Install the pilot manual valve on the start pilot pipe and the orifice on the stop pilot pipe. That requires only a simple configuration, an increase in the installation space of the hose housing portion side becomes possible suppression.

(Effect of pilot circuit using three-way switching valve)
The pilot manual valve is a three-way switching valve that can be switched between a water discharge position and a water discharge stop position. The simultaneous release valve is driven to open by supplying pilot pressure to the cylinder chamber, and the pilot pressure is discharged from the cylinder chamber. An opening / closing drive unit that is driven to be closed by the pilot circuit unit is provided, and the pilot circuit unit includes a start-up pilot pipe that supplies pilot pressure to the cylinder chamber of the simultaneous release valve by the switching operation of the three-way switching valve to the water discharge position, Since the pilot piping for stopping the pilot pressure is discharged from the cylinder chamber of the simultaneous release valve by switching to the water discharge stop position, the three-way selector valve provided in the hose housing as a pilot manual valve is Because the pilot pressure is controlled, it is compact, and the pilot circuit section on the water discharge control mechanism side is a simultaneous release valve. Easy of only the pilot pipe to be continued is finished configuration, an increase in the installation space of the hose housing portion side becomes possible suppression.

(Effects of configurations other than simultaneous release valves)
The water discharge control mechanism further includes an automatic pressure regulating valve connected to the secondary side of the simultaneous opening valve, a gate valve provided between the simultaneous opening valve and the automatic pressure regulating valve, and a gate valve and the simultaneous opening valve. Since there is a test drain valve connected in a branch connection, the automatic pressure control valve keeps the water supply pressure to the hose with the nozzle at a predetermined pressure, enabling stable water discharge, and closing the gate valve for testing By opening the drain valve, it is possible to inspect by actual water discharge without draining water from the hose with a nozzle with a test jig such as a test hose attached to the secondary side of the test drain valve.

(Effects of constant flow valve)
In addition, by providing a constant flow valve in place of the automatic pressure control valve, even if the water supply pressure of the water main skein fluctuates, it is possible to always supply a predetermined flow rate of fire-fighting water to the hose with a nozzle. The water discharge capacity can be secured.

(Effects of separate installation of elevating hose storage and water discharge control mechanism)
Also, the hose storage part is normally stored in the supervisor passage by the lifting mechanism during monitoring, and when using a fire hydrant, it is raised and held at the exposed position on the supervisor passage by the operation of the lifting mechanism, and the water discharge control Since the mechanism is installed in a management passage formed below the supervisor passage, it is stored in the supervisor passage when a predetermined switch operation is performed in the event of a vehicle accident involving a fire in the tunnel. The hose housing part is pushed up by the elevating mechanism and exposed on the road surface of the supervisor passage, and the hose with nozzle is easily and easily exposed from the hose compartment exposed on the supervisor passage without the need to open the fire hydrant door. Can be extinguished to extinguish the fire (Effect of separate installation of fixed hose storage and water discharge control mechanism)
In addition, the hose storage part is installed inside a fire hydrant door provided in an opening formed by hanging from the road surface of the supervisor passage to the wall facing the road, and the water discharge control mechanism is located below the supervisor passage. Because it was installed in the formed management passage, in the event of a vehicle accident involving a fire in the tunnel, the fire hydrant door is opened to open the hose storage part to the supervisor passage and the road side. The fire can be extinguished easily and easily by pulling out the hose with the nozzle from the passage.

Explanatory drawing showing emergency equipment for tunnels including fire hydrant equipment installed in a shield tunnel Explanatory drawing showing fire hydrant equipment for raising and lowering the hose compartment from the road side Explanatory drawing which showed the internal structure of the fire hydrant equipment of FIG. Explanatory drawing which showed the internal structure of the hose accommodating part in the fire hydrant equipment of FIG. Explanatory drawing which showed the state which raised the hose accommodating part by the raising / lowering mechanism, and was exposed on the supervisor path | route seen from the road surface side Explanatory drawing which showed embodiment of the water discharge control mechanism provided with the pilot manual valve with which the opening-and-closing lever was directly connected with the raising / lowering control mechanism Explanatory drawing showing an embodiment of a water discharge control system using an on-off valve as a pilot manual valve Explanatory drawing showing an embodiment of a water discharge control system using a three-way switching valve as a pilot manual valve An explanatory view showing an embodiment of a water discharge control mechanism in which an open / close lever and a pilot manual valve are connected by a link cable together with a lift control mechanism Explanatory drawing showing a cross-section of a fire hydrant facility with a fixed hose storage Explanatory drawing which showed the internal structure of the fire hydrant equipment of FIG.

[Outline of fire extinguishing equipment in the tunnel]
FIG. 1 is an explanatory view showing a tunnel emergency facility including a fire hydrant facility installed in a tunnel of an automobile exclusive road. As shown in FIG. 1, the inside of the tunnel 10 constructed by the shield method is covered with a cylindrical tunnel wall surface 12, and a road 15 is provided by being partitioned by a floor slab 18. In this example, The road 15 has two lanes in one direction.

  A supervisor passage 14 is provided along the tunnel wall 12 on the left side of the road 15 partitioned by the floor slab 18, and the inner space below the supervisor passage 14 is used as a duct 22, and a conduit is laid. .

  The lower side of the floor slab 18 on which the road 15 is formed is divided into a plurality of sections in the tunnel lateral direction. For example, the section located under the supervisor passage 14 is used as a management passage 20, and The management passage 20 is used as an emergency evacuation passage when a fire occurs in the tunnel. A water supply main 24 is laid in the management passage 20.

  Fire hydrant equipment 16 is installed at intervals of 50 meters in the longitudinal direction of the tunnel 10, and the fire hydrant equipment 16 is installed separately in a hose storage part 44 and a control mechanism storage part 45.

  The hose storage part 44 is disposed in a fire hydrant embedding part that is penetrated in a box shape over the road surface of the supervisor passage 14 and the wall surface on the road 15 side. The control mechanism storage unit 45 is disposed in the management passage 20 below the hose storage unit 44, a branch pipe branched from the water supply main pipe 24 is drawn in, and water supply for supplying fire-extinguishing water to the hose storage unit 44 is provided. Piping is set up.

  A hose with a nozzle is accommodated in the hose accommodating portion 44 of the fire hydrant equipment 16 and is supported by the elevating mechanism in the monitoring member passage 14. When a predetermined ascending operation is performed, the exposed position on the monitoring member passage 14 is increased by the elevating mechanism. The hose storage portion 44 is raised to an exposed state, and fire extinguishing work can be performed by pulling out the hose with a nozzle.

  When the hose with a nozzle is pulled out from the hose storage portion 44, the water discharge is started by operating an open / close lever provided on the hose storage portion 44 side.

[Fire hydrant installation structure]
FIG. 2 is an explanatory view showing the fire hydrant equipment for raising and lowering the hose storage portion from the road side, FIG. 3 is an explanatory view showing the internal structure of the fire hydrant equipment of FIG. 2 as seen from the road surface side, and FIG. Explanatory drawing which showed the internal structure of the hose storage part in the fire hydrant equipment in the section of the supervisor passage, FIG. 5 is a cross section seen from the road surface side where the hose storage part is lifted by the lifting mechanism and exposed on the supervisor passage It is explanatory drawing shown by.

(Appearance structure of fire hydrant equipment)
As shown in FIG. 2, the hose storage part side of the fire hydrant facility 16 is installed in an internal space below the floor surface of the supervisor passage 14 provided with the handrail 40, and the hydraulic pressure of the lifting mechanism 46 using the pantograph mechanism The cylinder 60 is arranged so as to be movable up and down by driving.

  A reporting device panel 28 and a fire hydrant panel 26 are installed on the front wall 14a facing the road of the monitoring person passage 14 where the fire hydrant facility 16 is installed. The fire hydrant panel 26 is fixedly installed with screws or the like, and can be removed when checking the inside.

  The notification device panel 28 is provided with a red indicator lamp 30, a transmitter 32 and a response lamp 34. The red indicator lamp 30 is always turned on so that the installation location of the fire hydrant facility 16 can be seen from a distance. In the event of a fire, when the push button switch is turned on by pressing the transmitter 32, a fire notification signal is transmitted to the disaster prevention reception board of the monitoring center, a fire alarm is issued, and a response signal is sent from the disaster prevention reception board accordingly. The lamp 34 is turned on and the red indicator lamp 30 blinks.

  In addition, the notification device panel 28 is provided with an ascending switch 36 a and a descending switch 36 b for raising and lowering the hose storage portion of the fire hydrant facility 16 disposed in the supervisor passage 14.

  On the left side of the reporting device panel 28, an operation door 120 that can be opened and closed upward by a handle 122 is provided, and an open / close lever 102 with a handle is disposed inside, and is provided in a water discharge control circuit that will be clarified in a later description. The pilot manual valve 100 can be switched between a water discharge position and a water discharge stop position.

  Furthermore, the handrail 40 is not provided in the part of the supervisor passage 14 where the fire hydrant facility 16 is installed, and this hinders the operation of the hose storage portion that is exposed from rising from the inside on the road surface of the supervisor passage 14. I do not want to be.

  It should be noted that the panel portion of the notification device panel 28 on which the ascending switch 36a and the descending switch 36b are arranged can be operated from both the road 15 side and the supervisor passage 14, so that it is oblique to the shoulder portion of the supervisor passage 14. You may arrange | position so that it may be located in other places.

(Structure of fire hydrant equipment installed in the interior space)
As shown in FIGS. 3 and 4, a rectangular fire hydrant elevator opening 42 is opened on the road surface corresponding to the installation location of the fire hydrant equipment 16 in the supervisor passage 14, and above the opening edge of the fire hydrant elevator opening 42. A step 42a is formed.

  A hose storage portion 44 of the fire hydrant facility 16 is disposed so as to be movable up and down with respect to the fire hydrant elevator 44. The hose storage portion 44 includes a box-shaped housing 48 that opens to the front and the back, and four frame pipes 52 are disposed at the front and back openings of the housing 48 and a hose outlet 55 is formed therebetween. ing.

  Inside the hose storage portion 44, a hose 54 with a nozzle 56 attached to the tip is housed in an internally wound state, and the nozzle 56 attached to the tip of the hose 54 is disposed at the center of the internally wound hose 54, and a housing 48 is provided. The nozzle 56 can be taken out from either the front surface or the back surface.

The hose storage portion 44 is supported by an elevating mechanism 46 so as to be movable up and down. In this embodiment, the elevating mechanism 46 using the pantograph mechanism is used as two elevating mechanisms 46. 46a and 46b. The left end of the link arm 46a is rotatably supported on the base 41 by a fulcrum 47a, and the link arm 46b is rotatably supported on the mounting base 43 by the fulcrum 47b. The link arm 46a intersects the link arms 46a and 46b at the center. Thus, the fulcrum 47c is pivotally connected.

  The right end of the link arm 46a is movably supported along the mounting base 43 by a roller 49a, and the right end of the link arm 46b is movably supported by the base 41 by a roller 49b.

  A piston cylinder mechanism is provided as a drive mechanism for the elevating mechanism 46, and the lower end of the double-acting hydraulic cylinder 60-1 is rotatably connected to the link arm 46b by a fulcrum 51a, and is slid into the double-acting hydraulic cylinder 60-1. The tip of a piston rod 63 connected to a piston 61 that is movably provided is rotatably connected to a link arm 46a by a fulcrum 51b.

  A control mechanism storage section 45 is disposed in the management passage 20 below the internal space in which the elevating mechanism 46 is disposed. The control mechanism storage section 45 is supplied with fire-extinguishing water to the hose 54 of the hose storage section 44. A water discharge control mechanism for discharging water and a lift control mechanism for driving the lift mechanism 46 to move up and down are provided.

  A branch pipe 24a branched from a water supply main 24 that functions as a water pressure source is connected to the control mechanism housing 45, and fire-extinguishing water supplied to the water supply main 24 from a fire pump system is introduced.

  The water discharge control mechanism built in the control mechanism storage unit 45 is provided with a simultaneous release valve that is opened and closed by controlling the pilot pressure by the pilot manual valve 100 provided on the hose storage unit 44 side of FIG. The water supply pipe 58 is connected to a flexible joint 65 serving as a hose connection port of the hose storage portion 44 via a connection hose 62. For example, a pipe having a diameter of about 50 mm is used as the water supply pipe 58.

  The connecting hose 62 has a hose length having a margin necessary for connection when the hose storage portion 44 is pushed up from the fire hydrant elevator opening 42 of the monitoring person passage 14 by the lifting mechanism 46 and held at the exposed position. Thereby, even if the hose accommodating portion 44 is moved up and down with respect to the pipe on the fixed side, the hose accommodating portion 44 can move without the connecting hose 62 coming out. Further, the movement of the connecting hose 62 caused by the raising / lowering operation is absorbed by the movement of the flexible joint 65.

  Further, from the water discharge control mechanism built in the control mechanism storage unit 45, start-up pilot pipes 104a and 104b are connected to the hose storage part 44 side and connected to the pilot manual valve 100 shown in FIG. The starting pilot pipes 104a and 104b are metal pipes having a diameter of about 10 millimeters.

  In addition, two pipes 59 for supplying and draining fire extinguishing water are connected to the hydraulic cylinder 60 of the lifting mechanism 46 from the lifting control mechanism built in the control mechanism housing 45.

  Here, the hose storage unit 44 and the control mechanism storage unit 45 are connected to each other with the monitoring hose 62 as the connection hose 62 and the management channel 20 side as the water supply pipe 58. 45 may be directly connected by a connecting hose. Also in this case, the connection of the connection hose with respect to the hose storage part 44 side and the control mechanism storage part 45 is connected by a flexible joint.

[Operation of fire hydrant equipment]
(Normal monitoring)
During normal monitoring when a vehicle is traveling on the road of the tunnel 10 shown in FIG. 1, the hose storage portion 44 of the fire hydrant facility 16 is provided in the control mechanism storage portion 45 as shown in FIGS. 2 to 4. Since the supply of fire-extinguishing water from the water discharge control mechanism is stopped, the hydraulic cylinder 60 of the elevating mechanism 46 positions the piston 61 at the lowest point, whereby the elevating mechanism 46 causes the hose storage portion 44 to pass through the supervisor passage. 14, the road surface plate 50 on the upper surface of the casing 48 is pressed against and supported by the step portion 42 a of the fire hydrant elevator 42, and the fire hydrant equipment 16 is installed in the supervisor passage 14. There will be no hindrance or danger to persons passing through the guard passage 14.

(When a fire breaks out)
On the other hand, when a vehicle accident involving a fire occurs in the tunnel 10, the user goes to the hydrant facility 16 near the fire occurrence place and pushes the transmitter 32 of the notification device panel 28 shown in FIG. A fire report signal is transmitted to the receiving board, a confirmation response signal is received from the disaster prevention receiving board, the response lamp 34 is turned on, and the red indicator lamp 30 is blinked to confirm the completion of the report to the monitoring center side.

  Subsequently, in order to perform a fire extinguishing operation, the raising switch 36a provided on the reporting device panel 28 is pressed and turned on. When the raising switch 36 is turned on, the fire extinguishing water is sent from the control mechanism housing 45 to the double-acting hydraulic cylinder 60 of the elevating mechanism 46, and the piston 61 is raised by the fire extinguishing water supplied into the cylinder, via the piston rod 63. Thus, the distance between the link arm 46a and the link arm 46b is increased.

  When the distance between the link arms 46a and 46b is increased, the angle of the link arms 46a and 46b increases around the fulcrum 47c, and the rollers 49a and 4b at the right ends of the link arms 46a and 46b move to the left side. The base 43 is pushed upward, and the hose storage portion 44 attached to the attachment base 43 is pushed up.

  For this reason, the road surface plate 50 which closes the fire hydrant raising / lowering opening 42 of the supervisor passage 14 is lifted, and the hose storage portion 44 stored inside slowly emerges from the road surface and rises to the exposed position shown in FIG. 5 and stops. , Hold this exposed position.

  When the hose storage portion 44 is held in an exposed state on the supervisor passage 14 in this way, the user takes out the nozzle 56 from the road side through the front opening of the housing 48, so that the hose can be easily and easily obtained. 54 can be pulled out.

  Subsequently, when the user opens the pilot manual valve 100 by opening the operation door 120 shown in FIG. 2 and operating the opening / closing lever 102 downward, the simultaneous opening valve provided in the control mechanism storage unit 45 is opened. The fire extinguishing water is driven and supplied to the hose 54 via the water supply pipe 58 and the connecting hose 62, and fire extinguishing work can be performed by discharging water from the nozzle 56.

  On the other hand, when the user performs a fire extinguishing operation from the side of the supervisor passage 14, the nozzle 56 is taken out from the rear opening of the casing 48 in the hose storage portion 44 exposed and held on the supervisor passage 14, and is shown in FIG. The pilot manual valve 100 is opened by opening the operation door 120 and turning the open / close lever 102 downward to operate the water discharge position, and the pilot pressure is supplied to the simultaneous release valve provided in the water discharge control mechanism to open the operation. Thus, fire extinguishing water is supplied to the hose 54 and discharged from the nozzle 56 to enable fire extinguishing work.

  When the fire is extinguished and the extinguishing operation is completed, the pilot manual valve 100 is closed by rotating the opening / closing lever 102 shown in FIG. 2 upward to return to the water discharge stop position, and the water discharge control mechanism simultaneous release valve Is closed and water discharge from the nozzle 56 is stopped.

  Further, in the restoration work after the fire extinguishing work is finished, the hose 56 is drained, and then the hose 54 is housed in an internally wound state in the hose housing part 44 exposed and held on the supervisor passage 14. . Subsequently, by turning on the lowering switch 36b provided on the reporting device panel 28, the hose storage portion 44 is lowered by the elevating mechanism 46, and the road surface plate 50 is lowered to a position where it contacts the step portion 42a of the fire hydrant elevating port 42. Then, the hose storage unit 44 is stored in the internal space of the supervisor passage 14.

[Water discharge control mechanism]
FIG. 6 is an explanatory view showing an embodiment of a water discharge control mechanism including a pilot manual valve with an open / close lever directly connected together with an elevation control mechanism.

As shown in FIG. 6, in the water discharge control mechanism 64, the branch pipe 24 a from the water supply main pipe 24 is drawn, and the simultaneous release valve 70 is connected after the check valve 68. The simultaneous release valve 70 is provided with a cylinder piston mechanism as an opening / closing drive unit for opening and closing the valve body, and operates the piston by supplying pilot pressure to the cylinder chamber to move the valve body to the open position, and by releasing the pilot pressure. A pilot manual valve 100 arranged separately on the hose storage portion 44 side is provided for the simultaneous opening valve 70 having a structure in which the piston is returned to the initial position by the return spring to move the valve body to the closed position. The pilot manual valve 100 uses a small on-off valve that can be switched between an open position and a closed position. An open / close lever 102 is directly connected to the valve body rotation shaft, and a water discharge stop position that is closed by operation of the open / close lever 102. The water discharge position that is the open position is switched.

  For the pilot manual valve 100, an activation pilot pipe 104 a branched from the primary side of the simultaneous release valve 100 is started up and connected to the inlet port of the pilot manual valve 100 arranged in the hose storage portion 44. . Further, the starting pilot pipe 104 a connected to the outlet port of the pilot manual valve 100 is cut off and connected to the simultaneous control valve 70.

  Further, a stop pilot pipe 108 is branched from the pilot pipe 104b returned to the simultaneous release valve 70, and is connected to the secondary side of the simultaneous release valve 100. The stop pilot pipe 108 is provided with an orifice 106. Yes.

  Here, the pilot circuit section that controls the pilot pressure for the simultaneous opening valve 70 to open and close is configured by the pilot manual valve 100, the starting pilot pipes 104a and 104b, the orifice 106, and the stopping pilot pipe 108.

  Following the simultaneous release valve 70, an automatic pressure regulating valve 76 is connected via a gate valve 74, and the secondary side of the automatic pressure regulating valve 76 is connected to the hose 54 of the hose storage section 44 via the water supply pipe 58 and the connecting hose 62. Has been. Further, the pipe branches from the front side of the gate valve 74 to the drain side, and a test drain valve 75 is connected thereto.

(Pilot circuit using an on-off valve)
FIG. 7 is an explanatory view showing an embodiment of a water discharge control system using an on-off valve as a pilot manual valve.

  As shown in FIG. 7, the simultaneous opening valve 70 is a cylinder piston mechanism in which a piston 70b is movably accommodated in a cylinder chamber 70a, a spring 70c is disposed behind the piston 70b, and a valve body 70d is connected to the piston 70b. Is provided as an opening / closing drive unit.

  The simultaneous release valve 70 is driven to open when the piston 70b is stroked against the spring 70c by supplying pilot pressure to the cylinder chamber 70a, and when the pilot pressure is released from the cylinder chamber 70a in the open state, the spring 70c The piston 70b is pushed back to the initial position by 70c and is driven to close.

  As a pilot circuit portion, a pilot manual valve 100 for supplying pilot pressure to the simultaneous release valve 70 is provided on the hose housing portion 44 side, and an activation pilot pipe 104 branched from the primary side of the simultaneous release valve 100 is started up. The pilot pilot valve 104 b connected to the inlet port of the pilot manual valve 100 and connected to the outlet port is lowered and connected to the cylinder chamber 70 a of the simultaneous release valve 70.

  Further, a stop pilot pipe 108 is branched from the start pilot pipe 104b to the cylinder chamber 70a of the simultaneous release valve 70, and is connected to the secondary side of the simultaneous release valve. The stop pilot pipe 108 is provided with an orifice 106. ing.

  The opening / closing drive of the simultaneous opening / closing valve 70 by the pilot manual valve 100 operated by the opening / closing lever 102 is as follows. Normally, the open / close lever 102 is in the water discharge stop position, the pilot manual valve 100 is closed, and the cylinder chamber 70 of the simultaneous release valve 70 is connected to the secondary side (open to the atmosphere) via the stop pilot pipe 108 provided with the orifice 106. The cylinder chamber 70a is in a non-pressure state, and the piston 70b is in the closed position where the valve body 70d is closed by the spring 70c.

  When the open / close lever 102 is operated to the water discharge position, the pilot manual valve 100 is opened, fire-extinguishing water is supplied to the cylinder chamber 70a of the simultaneous release valve 70 via the activation pilot pipe 104a, and pilot pressure is applied to the cylinder chamber 70a. Thus, the piston 70b strokes against the spring 70c, the valve body 70d is opened, fire extinguishing water is supplied to the secondary side, and water discharge from the drawn hose nozzle is started.

  At this time, water for fire extinguishing is also applied to the stop pilot pipe 108, but the outflow to the secondary side is restricted by the orifice 106, and the pilot pressure in the cylinder chamber 70a is maintained at a predetermined pressure or higher.

  When stopping the water discharge, when the open / close lever 102 is returned from the water discharge position to the water discharge stop position, the pilot manual valve 100 is closed and the supply of the fire-extinguishing water to the cylinder chamber 70a of the simultaneous release valve 70 is stopped. For this reason, the pressure in the cylinder chamber 70a is reduced to the secondary pressure through the orifice 106 of the stop pilot pipe 108, and the piston 70a moves the valve body 70d to the closing side. The simultaneous opening valve 70 is driven to be closed by the feedback action due to this repetition, and the water discharge from the nozzle is stopped.

(Pilot circuit using a three-way switching valve)
FIG. 8 is an explanatory view showing an embodiment of a water discharge control system using a three-way switching valve as a pilot manual valve.

  As shown in FIG. 8, the water discharge control system of this embodiment is provided with a pilot three-way switching valve 116 as a pilot manual valve. The pilot three-way switching valve 116 enables two-position switching that communicates the ports a and b at the water discharge position and communicates the ports b and c at the water discharge stop position.

  A pilot pilot pipe 104a branched from the primary side of the simultaneous release valve 70 is connected to the port a of the pilot three-way switching valve 116, and the port b is connected to the cylinder chamber of the simultaneous release valve 70 by the startup pilot pipe 104b. 70c, and the port c is connected to the drain side by a stop pilot pipe 118.

  Normally, the open / close lever 102 is switched to the water discharge stop position, the pilot three-way switching valve 110 is in a position where the ports a and c are communicated, and the cylinder chamber 70a of the simultaneous release valve 70 is connected via the stop pilot pipe 118. It is open to the drain side and is kept closed.

  When the open / close lever 102 is switched to the water discharge position, the pilot three-way switching valve 118 is switched to the water discharge position where the illustrated ports a and b communicate with each other, supplying fire-extinguishing water to the cylinder chamber 70a of the simultaneous release valve 70 and supplying the pilot pressure. The water for fire extinguishing is discharged from the hose with a nozzle drawn out from the hose storage.

  When stopping the water discharge, when the open / close lever 102 is returned from the water discharge position to the water discharge stop position, the pilot switching valve 116 is switched to the position where the ports a and c are communicated, and the cylinder chamber 70a of the simultaneous release valve 70 is stopped. The pilot valve 118 is opened to the drain side, the pilot pressure is lowered, the simultaneous release valve 70 is driven to close, and the water discharge from the nozzle is stopped.

[Elevation control mechanism]
As shown in FIG. 6, the elevation control mechanism 66 includes three-way switching valves 82 and 84. The three-way switching valves 82 and 84 are electric switching valves that are switched by motor driving. The three-way switching valve 82 can be switched between two positions: an ascending switching position where the ports a and b are communicated and a descending switching position where the ports b and c are communicated. The three-way switching valve 84 can be switched between two positions: an ascending switching position where the ports b and c are communicated and a descending switching position where the ports a and b are communicated.

  A check pipe 78 is provided on the branch pipe drawn from the water supply main pipe 24 serving as a water pressure source, followed by a constant flow valve 80. The check valve 78 is closed when the water pressure on the water supply main pipe 24 side is lowered to prevent the reverse flow of fire-fighting water. The constant flow valve 80 controls the flow rate of fire-extinguishing water (pressure water) supplied to the cylinder side to a predetermined flow rate regardless of pressure fluctuation.

  The secondary side of the constant flow valve 80 is connected to the port a of the three-way switching valves 82 and 84. The port b of the three-way switching valve 82 is connected to the rising cylinder chamber 60 a of the hydraulic cylinder 60, and the port b of the three-way switching valve 84 is connected to the lowering cylinder chamber 60 b of the hydraulic cylinder 60. Furthermore, the ports c of the three-way switching valves 82 and 84 are connected to the drain side.

  A parallel circuit of a flow control valve 86 and a check valve 88 is connected to the secondary side pipe connected from the three-way switching valve 82 to the rising cylinder chamber 60a of the hydraulic cylinder 60, and from the three-way switching valve 84 to the hydraulic cylinder. A parallel circuit of the flow control valve 90 and the check valve 92 is also connected to the secondary side pipe connected to the lowering cylinder chamber 60b.

  The flow rate control valve 90 controls the flow rate of the fire-extinguishing water discharged from the descending cylinder chamber 60b to the set flow rate when the hydraulic cylinder 60 is driven to rise, so that the ascent rate of the hose storage portion 44 by the piston 61 is set to a predetermined rate. Let me control.

  The flow rate control valve 86 controls the flow rate of the fire-extinguishing water discharged from the ascending cylinder chamber 60a to the set flow rate when the hydraulic cylinder 60 is driven to move downward, so that the lowering speed of the hose storage portion 44 by the piston 61 is set to a predetermined speed. Let me control.

(Control action by lift control mechanism)
During normal monitoring, the three-way switching valves 82 and 84 are in a switching position where the ports b and c are communicated, and the ascending cylinder chamber 60a and the descending cylinder chamber 60b of the hydraulic cylinder 60 are both communicated with the drain side. The hose storage portion 44 is received in the descending stop position under the load pressure due to the weight of the hose storage portion 44, and the hose storage portion 44 is stored in the supervisor passage 14.

  If the raising operation is performed in this state, the three-way switching valve 82 is switched to the raising switching position where the ports a and b are communicated, and the fire-extinguishing water is supplied to the raising cylinder chamber 60a of the hydraulic cylinder 60 and depends on the weight of the hose storage portion 44. The piston 60 starts to rise by overcoming the load pressure. As the piston 61 rises, the fire extinguishing water in the descending cylinder chamber 60b flows to the drain side through the three-way switching valve 84. At this time, the rising speed of the hose storage portion 44 by the piston 61 is determined by the set flow rate flowing through the flow control valve 90. .

  When the piston 61 reaches the full stroke, the hose storage 44 stops rising and is exposed on the supervisor passage 14, so that the fire extinguishing operation can be performed by pulling out the hose with the nozzle. In the state where the hose storage portion 44 is stopped at the raised position, the supply of fire extinguishing water to the rising cylinder chamber 60a of the hydraulic cylinder 60 is maintained by keeping the three-way switching valve 82 at the raised switching position, and the piston 61 has a load pressure. The hose storage part 44 is held in the ascending stop position by obtaining a pushing force exceeding.

  Further, when the water pressure on the water supply main pipe 24 side temporarily decreases while the hose storage portion 44 is held at the ascending stop position, the pressure decrease on the cylinder side is prevented by closing the check valve 78. The hose storage portion 44 can be stably held at the ascending stop position.

  When the fire extinguishing operation is completed and the hose is drained and stored in the hose storage portion 44, when the lowering operation is performed, the three-way switching valve 82 is switched to the lowering switching position for communicating the ports b and c. The three-way switching valve 84 is switched to the lowering switching position for communicating the ports a and b.

  For this reason, fire-extinguishing water is supplied to the descending cylinder chamber 60b of the hydraulic cylinder 60 via the three-way switching valve 84, and the ascending cylinder chamber 60a is communicated to the drainage side via the three-way switching valve 82. The piston 60 starts to descend in response to the load pressure due to the weight of the storage portion 44. As the piston 61 descends, the fire extinguishing water in the ascending cylinder chamber 60a flows out to the drainage side through the three-way switching valve 82. At this time, the descending speed of the hose accommodating portion 44 by the piston 61 is determined by the set flow rate flowing through the flow control valve 86. .

  When the piston 61 strokes to the lowering stop position, the hose storage portion 44 is stored in the supervisor passage 14, and, for example, the ports b and c are connected to the three-way switching valve 84 by a signal from a detection switch or the like that operates at the lowering stop position. Thus, the normal switching shown in FIG. 6 is resumed.

[Operation unit using link cable]
FIG. 9 is an explanatory view showing an embodiment of a water discharge control mechanism in which an open / close lever and a pilot manual valve are connected by a link cable together with a lift control mechanism.

  As shown in FIG. 9, the open / close lever 102 is separated from the pilot manual valve 100 fixedly installed on the side of the supervisor passage 14 in the hose storage portion 44 that is moved up and down by the cylinder 60.

  A link disk 110 is provided on the rotating shaft of the opening / closing lever 102, and two link cables 112 are passed between the link disk 110 and the link disk 114 provided on the valve body rotating shaft of the pilot manual valve 100. The pilot manual valve 100 can be remotely opened / closed by transmitting the rotation of the link disk 110 by the open / close lever 102 to the link disk 114 via a link cable connected to the link disk 112 by a link cable.

  When the fire hydrant equipment 16 is used, the hose storage portion 44 is raised to the exposed position on the supervisor passage 16 by the cylinder 60, and at this time, the opening / closing lever 102 is also integrated with the hose storage portion 44 to the exposed position on the supervisor passage 16. The open / close lever 102 provided in the exposed hose storage portion 44 can be operated from the road side or the supervisor passage side. For this reason, in this embodiment, it is not necessary to provide the operation door 120 in the fire hydrant panel 26 as shown in FIG.

  As described above, the pilot manual valve 100 and the opening / closing lever 102 are separately arranged and connected by a link cable so that they can be remotely operated. Thus, the opening / closing lever 102 is arranged and fixed on the hose storage portion 44 side that is moved up and down by the lifting mechanism. It is possible to open and close the pilot manual valve 100 that is delayed on the side.

  Since other configurations and operations are the same as those in the embodiment of FIG. 9, the same reference numerals are given and description thereof is omitted.

[Fire hydrant equipment with a separate structure with a fixed hose housing]
FIG. 10 is an explanatory view showing the internal structure of the fire hydrant facility in the tunnel as viewed from the road surface side, and FIG. 11 is an explanatory view showing the structure of the hose storage portion as viewed from the side.

(Appearance structure of fire hydrant device)
As shown in FIGS. 10 and 11, in the fire hydrant facility 16 of the present embodiment, the hose storage portion 44 is fixedly installed in the supervisor passage 14, and the control device storage portion 45 is separately disposed in the management passage 20 below the hose storage portion 44. It is characterized by that.

  The hose storage part 44 is installed by forming a fire hydrant embedding part having an attachment opening in the front wall 14 a facing the road 15 from the shoulder of the monitoring person passage 14 provided with the handrail 40.

  A fire hydrant door 96 that is unlocked and opened by the operation of the handle is provided in the fire hydrant embedding part of the supervisor passage 14, and the fire hydrant door 96 includes a vertical door front part 96 a located on the road 15 side. It has a door plate that is formed in a L-shaped cross-section with a horizontal door upper part 96b located on the side of the supervisor passage 14, and can be opened and closed upward by a pivotal support of a hinge 97 at the rear end of the door upper part 96b. It is supported by.

  A handle is also provided on the door surface of the fire hydrant door 96 located on the side of the supervisor passage 14, and the lock is released when the handle is opened, so that the fire hydrant door 96 can be opened from the supervisor passage 14 side. Yes.

  An operation door 120 that can be opened upward is provided on the left side of the fire hydrant door 96, and an opening / closing lever 102 with a handle is provided inside the operation door 120 shown in the drawing. The open / close lever 102 switches to the water discharge position when operated downward from the water discharge stop position shown in the figure, and opens the built-in pilot manual valve.

  The opening / closing operation of the pilot manual valve by the opening / closing lever 102 is performed by an embodiment in which the opening / closing lever 102 shown in FIG. 5 is directly connected to the pilot manual valve 100 or by separating the pilot manual valve 100 and the opening / closing lever 102 shown in FIG. A structure that can be remotely operated by connecting with a link cable is applied.

  9, the pilot manual valve 100 and the open / close lever 102 can be separately arranged at appropriate positions in the hose storage portion 44 in FIG. 10, and the degree of freedom in the arrangement relationship is increased. Moreover, it leads to the reduction of the installation space of the hose accommodating part 44.

  A notification device panel 28 is provided on the left side of the operation door 120, and a red indicator lamp 30, a transmitter 32, and a response lamp 34 are provided. A fire extinguisher door 98 is provided on the left side of the reporting device panel 28. The fire extinguisher door 98 includes a door plate having a L-shaped cross section in which a vertical door front portion located on the road 15 side and a horizontal door upper portion located on the supervisor passage 14 side are continuously provided, A door plate is supported so as to be openable and closable upward by a pivotal support of a hinge at the rear end of the upper portion of the door.

(Internal structure of fire hydrant device)
When the fire hydrant door 96 is opened upward by unlocking by operating the handle, the hose storage portion 44 installed inside can be operated via the door opening. In the hose storage portion 44, four frame pipes are arranged in a front opening of a box 48 formed in a box shape, and a hose outlet 55 is formed therebetween. A hose 54 fitted with a nozzle 56 at the tip is housed in the inside of the hose accommodating portion 44, and the nozzle 56 attached to the tip of the hose is positioned at the center of the hose 54 wound inside. The nozzle 56 can be taken out.

  As shown in FIG. 11, the hose storage portion 42 is disposed so as to be obliquely upward with respect to the corner portion from the road surface of the monitoring person passage 14 to the front wall 14a. When it opens to the position of the shown fire hydrant door 96-1, it has the structure which can take out the hose 54 by taking out the nozzle 56 arrange | positioned in the hose accommodating part 44 from both the road 15 side and the monitoring person passage 14 side.

  The water discharge control mechanism is separated from the hose storage portion 44 installed on the side of the supervisor passage 14 and stored in the control mechanism storage portion 45 installed in the management passage 20 located under the road 15.

  The water discharge control mechanism 64 shown in FIG. 6 is disposed in the control mechanism housing 45, and the pilot circuit portion provided in the simultaneous release valve 70 of the water discharge control mechanism 64 is the pilot circuit portion of FIG. 7 or FIG. For example, when the pilot circuit section of FIG. 7 is provided, the startup pilot pipes 104a and 104b are drawn from the control mechanism storage section 45 and connected to the hose storage section 44 side.

  In such an embodiment in which the hose storage portion 44 is fixedly installed on the side of the supervisor passage 14 and the water discharge control mechanism 64 is separately disposed in the management passage 20, the water discharge control mechanism separately disposed in the hose storage portion 44. In addition, a small pilot manual valve that controls the opening and closing of the simultaneous open valve provided on the pilot pipe is provided, and the pilot pipe is sufficiently thin compared to the water supply pipe. Even if a pilot manual valve is provided, the installation space of the hose storage part is hardly increased, and the merit of reducing the installation space of the hose storage part by damaging the water discharge control mechanism including the simultaneous release valve is impaired. It is possible to start and stop water discharge manually.

[Modification of the present invention]
(Simultaneous release valve)
In the above embodiment, a pressurization drive type simultaneous release valve that supplies water for extinguishing to the cylinder chamber of the drive unit by a water discharge operation to drive open is taken as an example, but the present invention is not limited to this. For example, a decompression drive type simultaneous release valve that supplies the fire extinguishing water to the cylinder chamber of the drive unit in the initial state to contain the pilot pressure, and discharges the fire extinguishing water from the cylinder chamber by the water discharge operation to release the pilot pressure. It is also good. In this case, the pilot manual valve is opened by a water discharge operation to discharge water for extinguishing the cylinder chamber, and the simultaneous opening valve is driven to open.

(Fire hydrant equipment)
The hoses and hydrant valves of the fire hydrant equipment shown in the above embodiment, the configuration and arrangement of the notification device, and other configurations are arbitrary, and an appropriate configuration may be adopted.

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

10: Tunnel 12: Tunnel wall 14: Observer passage 15: Road 16: Fire hydrant equipment 18: Floor slab 20: Management passage 22: Duct 24: Water supply main 24a: Branch pipe 26: Fire hydrant panel 28: Notification device panel 36a : Lift switch 36b: Lower switch 42: Fire hydrant elevator 44: Hose storage 45: Control mechanism storage 46: Lift mechanism 48: Housing 50: Road surface plate 54: Hose 55: Hose outlet 56: Nozzle 60: Cylinder 60a : Cylinder chamber for rising 60b: Cylinder chamber for lowering 62: Connection hose 63: Flexible joint 64: Water discharge control mechanism 66: Lift control mechanisms 68, 78, 88, 92: Check valve 74: Gate valve 75: Drain valve for test 76: Automatic pressure regulating valve 80: Constant flow valve 82, 84: Three-way switching valve 86, 90: Flow control valve 96: Fire hydrant door 98: Fire extinguisher door 100: Pilots manual valve 102: closing lever 104a, 104b: start pilot pipe 106: Orifice 108, 118: Stop pilot pipe 110, 114: Link wheel 112: link cable 116: pilot three-way valve 120: Operation Door

Claims (9)

In a fire hydrant facility in a tunnel in which a hose storage part in which a hose with a nozzle is stored and a water discharge control mechanism for controlling the supply of fire-fighting water to the hose with a nozzle are separately arranged,
A simultaneous release valve that is provided in the water discharge control mechanism and that supplies water for fire extinguishing to the hose storage portion by being opened by receiving supply of pilot pressure;
An operation unit provided in the hose storage unit and operated at a water discharge position and a water discharge stop position;
A pilot manual valve that is provided in the hose storage part and is opened and closed by an operation to the water discharge stop position of the operation part;
A pilot circuit unit that supplies the pilot pressure to the simultaneous open valve by opening the pilot manual valve and drives the pilot manual valve to open and removes the pilot pressure from the simultaneous open valve by a close operation of the pilot manual valve;
A fire hydrant facility in the tunnel characterized by the provision of
The fire hydrant installation in a tunnel according to claim 1, wherein the operation portion is provided with an open / close lever connected to a valve body rotation shaft of the pilot manual valve to open and close.
The fire hydrant installation in a tunnel according to claim 1, wherein the operation section transmits and closes the operation of an opening / closing lever to a valve body rotation shaft of the pilot manual valve by a link cable. .
(Pilot circuit using a manual on-off valve)
In the tunnel fire hydrant facility according to claim 1,
The pilot manual valve is an on-off valve that switches between an open position and a closed position,
The simultaneous release valve is driven to open by supplying pilot pressure to the cylinder chamber, and is provided with an opening / closing drive unit that is driven to close by discharging pilot pressure from the cylinder chamber,
The pilot circuit section is
An activation pilot pipe for supplying pilot pressure to the cylinder chamber of the simultaneous release valve by opening the pilot manual valve;
An orifice that is provided in a pipe that communicates the cylinder chamber of the simultaneous release valve to the secondary side, and that discharges pilot pressure from the cylinder chamber in a state in which the pilot manual valve is closed;
A fire hydrant facility in the tunnel characterized by the provision of
In the tunnel fire hydrant facility according to claim 1,
The pilot manual valve is a three-way switching valve capable of switching between a water discharge position and a water discharge stop position.
The simultaneous release valve is driven to open by supplying pilot pressure to the cylinder chamber, and is provided with an opening / closing drive unit that is driven to close by discharging pilot pressure from the cylinder chamber,
The pilot circuit section is
An activation pilot pipe for supplying pilot pressure to the cylinder chamber of the simultaneous release valve by the switching operation to the water discharge position of the three-way switching valve;
A pilot pipe for stopping that discharges pilot pressure from the cylinder chamber of the simultaneous release valve by switching operation to the water discharge stop position of the three-way switching valve,
A fire hydrant facility in the tunnel characterized by the provision of
The fire hydrant facility in a tunnel according to claim 1, wherein the water discharge control mechanism further includes:
A check valve connected to the primary side of the simultaneous release valve;
An automatic pressure regulating valve connected to the secondary side of the simultaneous release valve;
A gate valve provided between the simultaneous release valve and the automatic pressure regulating valve;
A test drain valve branch-connected between the gate valve and the simultaneous release valve;
A fire hydrant facility in the tunnel characterized by the provision of
The fire hydrant equipment in a tunnel according to claim 6, wherein a constant flow valve is provided in place of the automatic pressure regulating valve.
(Separate installation of elevating hose storage and water discharge control mechanism)
In the tunnel fire hydrant facility according to claim 1,
The hose storage portion is normally stored in the monitoring member passage by the lifting mechanism during monitoring, and when using a fire hydrant, the hose storage portion is raised and held at the exposed position on the monitoring member passage by the operation of the lifting mechanism,
The fire hydrant facility in a tunnel, wherein the water discharge control mechanism is installed in a management passage formed below the supervisor passage.
In the tunnel fire hydrant facility according to claim 1,
The hose storage part is installed inside a fire hydrant door provided in an opening formed by hanging from the road surface of the surveillance passage to the wall surface facing the road,
The fire hydrant facility in a tunnel, wherein the water discharge control mechanism is installed in a management passage formed below the supervisor passage.

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