Fire hydrant systems and disaster prevention systems

Abstract

To reduce a burden of inspecting a fire hydrant valve operation mechanism and previously prevent such a state that a fire hydrant valve cannot be opened in the event of fire.SOLUTION: A fire hydrant device 16 comprises: a fire hydrant valve operation mechanism 134 for opening and closing a fire hydrant valve installed in a pipeline connected to a fire hose; and an inspection unit which includes a motor 152 that is installed in the fire hydrant valve operation mechanism 134 and an inspection control section 146 which causes the fire hydrant valve operation mechanism 134 to operate for inspection by driving the motor 152 in response to an instruction from a disaster prevention receiving panel as an external part and detects the current flowing in the motor 152 to determine the state of the fire hydrant valve operation mechanism 134.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] The present invention relates to a fire hydrant device provided with a fire hydrant valve operating mechanism for opening and closing a fire hydrant valve provided in a pipe connected to a fire hose, and a disaster prevention system including the fire hydrant device.

Background Art

[0002] Conventionally, fire hydrant devices have been installed as emergency facilities in tunnels such as highways and motorways that are the areas to be extinguished. The fire hydrant device includes, in a fire hydrant storage section inside a housing equipped with a fire hydrant door, a fire hose with a nozzle attached to its tip as fire hydrant equipment, valves including a fire hydrant valve, a fire hydrant valve operating mechanism for opening and closing the fire hydrant valve, etc., which are stored and installed, and in a fire extinguisher storage section inside a housing equipped with a fire extinguisher door, for example, two fire extinguishers are stored. Also, the fire hydrant device is generally installed by cutting out the tunnel wall surface at intervals of, for example, 50 meters in the longitudinal direction of the tunnel and embedding it.

[0003] By the way, the conventional fire hydrant valve operating mechanism is provided with a fire hydrant valve opening and closing lever and a driving pulley that rotates by operating the fire hydrant valve opening and closing lever in an operation box on the back side of the fire hydrant door, and a driven pulley connected to the valve shaft of the fire hydrant valve is provided in an interlocking box of the fire hydrant valve provided in the middle of the pipe to which the fire hose inside the housing is connected, and these two pulleys are connected by a pair of wires or the like.

[0004] Also, when a user uses the fire hydrant device, first, the fire hydrant door is opened, the nozzle held on the back surface of the fire hydrant door is taken out, the fire hose is pulled out from the housing, and then the fire hydrant valve opening and closing lever provided in the operation box on the back surface of the fire hydrant door is operated to the open position, so that the driving pulley of the operation box rotates, the driven pulley of the interlocking box rotates via a pair of wires, the fire hydrant valve is opened, fire extinguishing water is supplied to the fire hose, and water is discharged from the nozzle.

Prior Art Documents

Patent Documents

[0005] [Patent Document 1] Japanese Patent Publication No. 2006-006376 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, in the fire hydrant valve operating mechanism installed in such fire hydrant systems, the wire connecting the fire hydrant valve opening / closing lever side and the fire hydrant valve side may break or become stuck due to the effects of the environment inside the tunnel.

[0007] Therefore, while these wire failures are detected and addressed during regular inspections by maintenance personnel every six months, if a fire occurs between the time a wire failure occurs and the regular inspection, a critical problem arises: the fire hydrant valve cannot be opened using the valve opening / closing lever, making firefighting impossible. It is necessary to identify and prevent this problem beforehand.

[0008] Furthermore, periodic inspections require checking 60 fire hydrant systems installed at 50-meter intervals in a 3-kilometer-long tunnel. If each inspection takes, for example, 5 minutes, the total work time, including travel time between fire hydrant systems, would exceed 8 hours, making it difficult to shorten the inspection period considering the burden on maintenance personnel, and the number of maintenance personnel themselves is also on the decline.

[0009] Furthermore, because the wire is under tension to transmit the movement of the fire hydrant valve opening / closing lever to the fire hydrant valve, it is not possible to remotely operate the fire hydrant valve opening / closing lever without opening or closing the fire hydrant valve. In other words, if the fire hydrant valve opening / closing lever is operated to the open position during inspection, fire extinguishing water will be released, and if it is not operated to the closed position in a short time, the fire hose will be filled with fire extinguishing water, requiring the water to be drained from the fire hose.

[0010] Furthermore, to facilitate inspection, it is conceivable to install a clutch mechanism on the fire hydrant valve side, allowing the fire hydrant valve opening / closing lever to be operated remotely without opening the valve. However, the addition of a clutch mechanism would complicate the structure, increasing the number of parts that need to be checked for malfunctions.

[0011] The present invention aims to provide a fire hydrant device and disaster prevention system that reduces the burden of inspecting the fire hydrant valve operating mechanism and prevents situations in which the fire hydrant valve cannot be opened during a fire. [Means for solving the problem]

[0012] (Fire hydrant system) The present invention relates to a fire hydrant system equipped with a fire hydrant valve operating mechanism for opening and closing a fire hydrant valve provided in a pipe to which a fire hose is connected, A key feature is the inclusion of an inspection unit that, in response to external instructions, inspects and operates the fire hydrant valve operating mechanism to determine its condition.

[0013] (Configuration of the fire hydrant valve operating mechanism and inspection unit) The fire hydrant valve operating mechanism is, An operating unit that is operated between the open position, which opens the fire hydrant valve, and the closed position, A drive pulley is connected to an operating unit and rotated by the operation of the operating unit, A driven pulley connected to the valve stem of a fire hydrant valve, A pair of wires connects the driving pulley and the driven pulley, transmitting the rotation of the driving pulley to the driven pulley. Equipped with, The inspection department is, A motor provided on either the driving pulley side or the driven pulley side, An inspection control unit, which operates the fire hydrant valve operating mechanism by driving a motor based on an external command, detects the current flowing through the motor, and determines the state of the fire hydrant valve operating mechanism, It is equipped with.

[0014] (The status of the fire hydrant valve operating mechanism being determined) The inspection control unit determines, as the state of the fire hydrant valve operating mechanism, wire sticking, wire cutting, and wire loosening.

[0015] (Determination of wire sticking, wire cutting, and wire loosening) The inspection control unit determines that the wire is stuck when the current flowing through the motor exceeds a predetermined upper limit current value, determines that the wire is cut when the current flowing through the motor is less than a predetermined drive current value, and determines that the wire is loose when the current flowing through the motor exceeds the predetermined drive current value from being less than the predetermined drive current value.

[0016] (Notification of failure and failure omen) The inspection control unit when determining wire sticking and wire cutting, performs predetermined notification control as a failure of the fire hydrant valve operating mechanism, when determining wire loosening, performs notification control different from the notification control of the failure of the fire hydrant valve operating mechanism as an omen of the failure of the fire hydrant valve operating mechanism.

[0017] (Opening degree limit during inspection) When the inspection control unit detects a predetermined opening degree of the fire hydrant valve, it stops the opening drive of the motor that increases the opening degree of the fire hydrant valve and performs a closing drive to decrease the opening degree of the fire hydrant valve.

[0018] (Inspection prohibition when the fire hydrant door is opened) When the inspection control unit detects the opening of the fire hydrant door that is opened when pulling out the fire hose, it does not perform an inspection operation on the fire hydrant valve operating mechanism even when receiving an instruction from the outside.

[0019] (Disaster prevention system) The present invention is a disaster prevention system that connects and monitors terminal equipment including the aforementioned fire hydrant device to a disaster prevention receiving board, where the inspection unit of the fire hydrant device performs an inspection operation on the fire hydrant valve operating mechanism according to an instruction from the disaster prevention receiving board and determines the state of the fire hydrant valve operating mechanism, The disaster prevention receiving panel is characterized by transmitting instructions to the fire hydrant system inspection unit at a predetermined timing, and displaying the determination result of the status of the fire hydrant valve operating mechanism determined by the fire hydrant system inspection unit based on the received instructions. [Effects of the Invention]

[0020] (Effectiveness of fire hydrant systems) The present invention relates to a fire hydrant system equipped with a fire hydrant valve operating mechanism for opening and closing a fire hydrant valve installed in a pipe connected to a fire hose. The system includes an inspection unit that, when instructed from the outside, inspects the fire hydrant valve operating mechanism and determines its condition. This eliminates the need for maintenance personnel to travel to the site to inspect the mechanism, allowing for remote inspection from an external source and reducing the burden on maintenance personnel. Furthermore, since the fire hydrant valve operating mechanism can be inspected by instructing the inspection unit from an external source, inspections can be performed at any time, increasing the frequency of inspections and thus preventing critical malfunctions that would prevent the opening of the fire hydrant valve in the event of a fire.

[0021] (Effects of the configuration of the fire hydrant valve operating mechanism and inspection unit) Furthermore, the fire hydrant valve operating mechanism includes an operating unit that is operated between an open position for opening the fire hydrant valve and a closed position for closing the fire hydrant valve, a driving pulley to which the operating unit is connected and which rotates when the operating unit is operated, a driven pulley connected to the valve shaft of the fire hydrant valve, and a pair of wires that connect the driving pulley and the driven pulley and transmit the rotation of the driving pulley to the driven pulley. The inspection unit includes a motor provided on either the driving pulley side or the driven pulley side, and an inspection control unit that, upon external instruction, drives the motor to inspect the fire hydrant valve operating mechanism, detects the current flowing through the motor, and determines the state of the fire hydrant valve operating mechanism. Since the current flowing through the motor corresponds to the torque applied to the motor, detecting the current flowing through the motor makes it possible to substantially detect the torque applied to the motor, thereby enabling appropriate determination of the state of the fire hydrant valve operating mechanism.

[0022] (Effects of detecting wire sticking, wire breakage, and wire loosening) Furthermore, the inspection and control unit determines the state of the fire hydrant valve operating mechanism, specifically identifying wire sticking, wire breakage, and wire looseness. Specifically, it determines wire sticking when the current flowing to the motor exceeds a predetermined upper limit current value, wire breakage when the current flowing to the motor falls below a predetermined drive current value, and wire looseness when the current flowing to the motor rises from below a predetermined drive current value to a predetermined drive current value. This allows for the detection of not only malfunctions requiring immediate attention, such as wire breakage and wire sticking, but also conditions that could potentially cause future malfunctions, such as wire looseness, enabling a more accurate understanding of the fire hydrant valve operating mechanism's state.

[0023] (Effects of notification of malfunctions and signs of malfunctions) Furthermore, the inspection and control unit is designed to perform a predetermined notification control when it detects wire sticking or wire breakage, indicating a malfunction of the fire hydrant valve operating mechanism. When it detects wire looseness, it performs a different notification control than that for a fire hydrant valve operating mechanism malfunction, indicating a precursor to a fire hydrant valve operating mechanism malfunction. This allows for immediate notification to maintenance personnel in cases of wire sticking or wire breakage requiring immediate attention, and notification to external parties, such as manufacturers, that handle the components of the fire hydrant valve operating mechanism, rather than to maintenance personnel. This reduces the burden on maintenance personnel who maintain the tunnel and enables appropriate action to be taken according to the condition of the fire hydrant valve operating mechanism.

[0024] (Effect of limiting the opening angle during inspection) Furthermore, when the inspection control unit detects a predetermined opening degree of the fire hydrant valve, it stops the motor that increases the opening degree of the fire hydrant valve and instead performs a closing drive that decreases the opening degree of the fire hydrant valve. As a result, the opening degree at which the entire fire hydrant valve is opened during the inspection operation of the fire hydrant valve operating mechanism is adjusted so as not to open the fire hydrant valve more than necessary, thus preventing the fire hose from being filled with fire extinguishing water and eliminating the need for recovery work such as draining the water from the fire hose during the inspection.

[0025] (Effect of prohibiting inspections when fire hydrant doors are open) Furthermore, the inspection and control unit has been configured to prevent the fire hydrant valve operating mechanism from being operated for inspection, even if it receives instructions from an external source, if it detects that the fire hydrant door is open when the fire hose is pulled out. This ensures that remote inspection does not interfere with the operation of the fire hydrant system by users in the event of a fire.

[0026] (Effectiveness of disaster prevention systems) This disaster prevention system monitors a monitoring area by connecting terminal equipment, including the aforementioned fire hydrant device, to a disaster prevention receiving panel. The inspection unit of the fire hydrant device performs an inspection operation of the fire hydrant valve operating mechanism based on instructions from the disaster prevention receiving panel and determines the status of the fire hydrant valve operating mechanism. The disaster prevention receiving panel transmits instructions to the inspection unit of the fire hydrant device at predetermined timings and displays the result of the inspection of the status of the fire hydrant valve operating mechanism by the inspection unit based on the instructions received. Thus, the disaster prevention receiving panel can know the result of the inspection of the fire hydrant valve operating mechanism. [Brief explanation of the drawing]

[0027] [Figure 1] This is an explanatory diagram showing a tunnel disaster prevention system. [Figure 2] This is an explanatory diagram showing a fire hydrant system. [Figure 3] This is an explanatory diagram showing the internal structure of a fire hydrant system from the front, with the fire hydrant door, maintenance door, and fire extinguisher door in the open position. [Figure 4] This is an explanatory diagram showing the fire hydrant valve operating mechanism, taken out of the packaging. [Figure 5] This is an explanatory diagram showing the configuration of the terminal control device for a fire hydrant system. [Figure 6] This is an explanatory diagram showing the configuration of the disaster prevention receiving panel. [Figure 7] This is a flowchart illustrating the inspection and control of the fire hydrant valve operating mechanism. [Modes for carrying out the invention]

[0028] Embodiments of the fire hydrant device and disaster prevention system according to the present invention will be described in detail below with reference to the drawings. However, the present invention is not limited to the following embodiments.

[0029] [Basic Concepts of the Embodiment] First, the basic concepts of the embodiment will be explained. The embodiment generally relates to a fire hydrant system equipped with a fire hydrant valve operating mechanism for opening and closing a fire hydrant valve provided in piping to which a fire hose is connected, and a disaster prevention system that monitors a monitoring area by connecting terminal equipment including the fire hydrant system to a disaster prevention receiving panel.

[0030] Here, "fire hydrant system" refers to a type of emergency equipment used to construct a fire prevention system installed in areas that are subject to fire suppression, such as tunnels on expressways and motorways. It houses and installs fire hydrant equipment such as fire hoses, fire hydrant valves, and fire hydrant valve operating mechanisms, and may also include emergency notification equipment such as red indicator lights and transmitters, or fire extinguishers.

[0031] Furthermore, a "disaster prevention receiving panel" is installed in the electrical room of a facility or equipment that constructs a disaster prevention system, and monitors abnormalities in the target area by connecting terminal equipment of emergency equipment such as fire hydrants and fire detectors that are installed in the target area. In addition, there are two types of transmission between the disaster prevention receiving panel and terminal equipment: "R-type (Recorded type) transmission," which sends and receives signals by setting a unique address for each terminal device, including fire hydrants and fire detectors, and "P-type (Proprietary-type) transmission," which sends and receives signals by connecting terminal equipment on a line-by-line basis.

[0032] Furthermore, a "fire hydrant valve operating mechanism" is an arbitrary mechanism for opening and closing a fire hydrant valve to discharge water from a fire hose and to stop the discharge of water. For example, it includes an operating part that is operated between an open position for opening the fire hydrant valve and a closed position for closing the fire hydrant valve, a driving pulley to which the operating part is connected and which rotates when the operating part is operated, a driven pulley connected to the valve shaft of the fire hydrant valve, and a pair of wires that connect the driving pulley and the driven pulley and transmit the rotation of the driving pulley to the driven pulley.

[0033] Furthermore, the fire hydrant system of the embodiment is characterized by having an inspection unit that performs an inspection operation on the fire hydrant valve operating mechanism in response to an external instruction and determines the state of the fire hydrant valve operating mechanism. The configuration and function of the "inspection unit" are arbitrary, but for example, it may include a motor provided on either the driving pulley side or the driven pulley side, and an inspection control unit that performs an inspection operation on the fire hydrant valve operating mechanism by driving the motor in response to an external instruction, and determines the state of the fire hydrant valve operating mechanism by detecting the current flowing through the motor.

[0034] Here, "external instruction" refers to an instruction from outside the fire hydrant system, and any instruction that allows the fire hydrant valve operating mechanism to be remotely inspected and operated is acceptable. This includes, for example, instructions based on control signals that are automatically transmitted at predetermined timings, or instructions based on control signals that are transmitted through manual operation. Furthermore, while the type of operation performed as the "inspection operation" of the fire hydrant valve operating mechanism is arbitrary, since the fire hydrant valve operating mechanism is for opening and closing fire hydrants, the inspection operation should include an operation that combines the operation to open the fire hydrant and the operation to close the fire hydrant. Additionally, the drive of the motor that performs the operation to open the fire hydrant (increase the opening degree of the fire hydrant valve) is referred to as the "opening drive," and the drive of the motor that performs the operation to close the fire hydrant (decrease the opening degree of the fire hydrant valve) is referred to as the "closing drive."

[0035] Furthermore, the term "motor" refers to a motor that can be installed on either the driving pulley side or the driven pulley side, but is not limited to motors installed on either the driving or driven pulley. For example, if the valve shaft of a fire hydrant valve is connected to the driven pulley, and a motor is installed on the fire hydrant valve, the motor can be used to operate the fire hydrant valve's operating mechanism. Therefore, if a motor is installed on the fire hydrant valve, it falls under the category of a motor installed on the driven pulley side. Similarly, since an operating unit is connected to the driving pulley, if a motor is installed on the operating unit, it falls under the category of a motor installed on the driving pulley side.

[0036] Furthermore, the "state of the fire hydrant valve operating mechanism" determined by the inspection and control unit is arbitrary, but it may include, for example, wire sticking, wire breakage, and wire looseness. Also, the method for determining each state of wire sticking, wire breakage, and wire looseness is arbitrary, but for example, if the current flowing to the motor (detected current) exceeds a predetermined upper limit current value, it may be determined that the wire is stuck; if the current flowing to the motor is less than a predetermined drive current value, it may be determined that the wire is broken; and if the current flowing to the motor goes from less than a predetermined drive current value to exceed a predetermined drive current value, it may be determined that the wire is loose.

[0037] Furthermore, if the "inspection control unit" detects wire sticking or wire breakage, it will perform a predetermined notification control as a malfunction of the fire hydrant valve operating mechanism. If it detects wire looseness, it will perform a different notification control than the fire hydrant valve operating mechanism malfunction notification control as a precursor to a fire hydrant valve operating mechanism malfunction. Here, the type of notification control for "predetermined notification control as a fire hydrant valve operating mechanism malfunction" and "predetermined notification control as a precursor to a fire hydrant valve operating mechanism malfunction" is arbitrary, but for example, if it is "predetermined notification control as a fire hydrant valve operating mechanism malfunction," the fire hydrant valve cannot be opened or closed and immediate action is required, so the control will be set up to notify maintenance personnel who are required to respond on-site. If it is "predetermined notification control as a precursor to a fire hydrant valve operating mechanism malfunction," the fire hydrant valve can be opened or closed and the situation is not urgent, so the control will notify an external party that handles the components of the fire hydrant valve operating mechanism, such as a manufacturer, rather than maintenance personnel who are required to respond on-site.

[0038] Furthermore, when the "inspection control unit" detects a predetermined opening degree of the fire hydrant valve, it stops the motor that increases the opening degree of the fire hydrant valve and instead performs a closing drive that decreases the opening degree of the fire hydrant valve.

[0039] Furthermore, if the "inspection control unit" detects that the fire hydrant door is open when the fire hose is pulled out, it will not perform an inspection operation on the fire hydrant valve operating mechanism, even if it receives an instruction from an external source.

[0040] Furthermore, in a disaster prevention system that monitors a monitoring area by connecting terminal equipment, including the aforementioned fire hydrant device, to a disaster prevention receiving panel, the inspection unit of the fire hydrant device performs an inspection operation of the fire hydrant valve operating mechanism based on instructions from the disaster prevention receiving panel and determines the status of the fire hydrant valve operating mechanism. The disaster prevention receiving panel transmits instructions to the inspection unit of the fire hydrant device at a predetermined timing and displays the determination result of the status of the fire hydrant valve operating mechanism determined by the inspection unit of the fire hydrant device that received the instructions.

[0041] The following describes a specific embodiment. In this embodiment, the "fire hydrant valve operating mechanism" is "equipped with a fire hydrant valve opening / closing lever, a driving pulley, a driven pulley, and a pair of wires as an operating unit," the "inspection unit" is "equipped with an inspection control unit and a motor," the "inspection control unit" "determines the state of the fire hydrant valve operating mechanism as wire sticking, wire breakage, and wire loosening based on the current flowing through the motor, and is provided on a terminal control device installed in the fire hydrant device," and the case of a tunnel disaster prevention system in which terminal equipment including the fire hydrant device is connected to a disaster prevention receiving panel for monitoring will be described.

[0042] [Specific details of the embodiment] We will now provide a more detailed explanation of fire hydrant systems and disaster prevention systems. The explanation will be divided as follows: a. Tunnel disaster prevention system b. Fire hydrant system b1. Configuration of a fire hydrant system b2. Internal structure of a fire hydrant system b3. Fire hydrant valve operation mechanism b4. Terminal control device c. Disaster prevention receiver panel d. Inspection and control of fire hydrant valve operating mechanism e. Modifications of the present invention

[0043] [a. Tunnel disaster prevention system] This section describes a tunnel disaster prevention system equipped with a fire hydrant system. Refer to Figure 1, which illustrates the tunnel disaster prevention system, for further explanation.

[0044] As shown in Figure 1, an uphill tunnel 1 and a downhill tunnel 2 are constructed as tunnels for an expressway, and the uphill tunnel 1 and the downhill tunnel 2 are connected by an evacuation tunnel 3. Inside the uphill tunnel 1 and the downhill tunnel 2, fire hydrant devices 16 are embedded and installed along the longitudinal walls of the tunnels, for example, at intervals of 50 meters.

[0045] The fire hydrant system 16 is equipped with a terminal control device that includes an inspection control unit, which constitutes an inspection section for inspecting the fire hydrant valve operating mechanism, and a unique address is set to correspond to the R-type transmission system. Further details of the fire hydrant system 16 will be described separately. In addition, fire detectors are installed in the tunnel at intervals of, for example, 50 meters, similar to the fire hydrant system 16, but they are not shown in the illustration.

[0046] Furthermore, a disaster prevention receiving panel 10 is installed in the tunnel's electrical room or other location to monitor for abnormalities, including fires, within the tunnel by connecting terminal equipment such as fire hydrants 16 and fire detectors installed inside the tunnel. Details of the disaster prevention receiving panel 10 will be described separately later.

[0047] Furthermore, in order to connect the disaster prevention receiving panel 10 to each terminal device, a transmission cable 12 including transmission lines 1210 and 1220 is drawn out from the disaster prevention receiving panel 10. Transmission line 1210 is drawn out into the uphill tunnel 1, and transmission line 1220 is drawn out into the downhill tunnel 2, and fire hydrant devices 16 are connected to each of them.

[0048] Furthermore, transmission lines 1210 and 1220 are wired via a relay amplification panel 18 installed inside the tunnel, and the relay amplification panel 18 relays and amplifies the signals transmitted and received between the disaster prevention receiving panel 10 and a fire hydrant device 16 installed far away from the disaster prevention receiving panel 10.

[0049] Furthermore, the configuration of transmission lines 1210 and 1220 is arbitrary, but for example, it shall consist of a power line, a common line, and a transmission line for transmitting a downlink signal in voltage mode from the disaster prevention receiving panel 10 to terminal equipment and an uplink signal in current mode from the fire hydrant device 16 to the disaster prevention receiving panel 10. When transmitting a downlink signal in voltage mode, for example, the downlink signal shall be transmitted as a voltage pulse that changes the line voltage between 18 volts and 30 volts. When transmitting an uplink signal in current mode, for example, the signal current shall flow at the timing of bit 1 of the transmission data, and the uplink signal shall be transmitted as a so-called current pulse train. In the case of transmission using two-wire transmission lines 1210 and 1220 consisting of a transmission line and a common line, half-duplex communication shall be performed by switching between transmitting a downlink signal in voltage mode and an uplink signal in current mode.

[0050] In addition, other emergency tunnel equipment is installed, including fire pump equipment 24, IG substation equipment (intelligent substation equipment) 26, ventilation equipment 28, alarm display board equipment 30, radio rebroadcasting equipment 32, television monitoring equipment 34, and lighting equipment 36. These pieces of equipment are individually connected to the disaster prevention receiving panel 10 via P-type signal lines 14, with the exception of the IG substation equipment 26, which is connected to the disaster prevention receiving panel 10 via a data transmission line. In some cases, the transmission between the fire pump equipment 24 and the disaster prevention receiving panel 10 is R-type transmission, and the fire pump equipment 24 and the disaster prevention receiving panel 10 are connected via R-type transmission lines.

[0051] Here, the IG substation equipment 26 is communication equipment that connects the equipment installed inside the tunnel, including the disaster prevention receiving panel 10, with remote management equipment installed far outside the tunnel. The ventilation equipment 28 is equipment that energizes the air inside the tunnel by operating jet fans installed on the ceiling side of the tunnel, creating a ventilation flow in the longitudinal direction of the tunnel. The alarm display board equipment 30 is equipment that notifies road users inside the tunnel of abnormalities inside the tunnel by displaying them on an electronic display board. The radio rebroadcasting equipment 32 is equipment that enables road users and others inside the tunnel to receive information from the road administrator. The television monitoring equipment 34 is equipment that allows for confirmation of the scale and location of fires, operation of water spray equipment, and understanding the situation inside the tunnel when guiding evacuations. The lighting equipment 36 is equipment that drives the lighting fixtures inside the tunnel.

[0052] [b. Fire hydrant system] Next, we will explain the fire hydrant system. In this explanation, please refer to Figure 2, which shows the fire hydrant system; Figure 3, which shows the internal structure of the fire hydrant system from the front with the fire hydrant door, maintenance door, and fire extinguisher door in the open position; Figure 4, which shows the fire hydrant valve operating mechanism removed; and Figure 5, which shows the configuration of the terminal control device installed in the fire hydrant system.

[0053] In the explanation of Figures 2 and 3, the X, Y, and Z directions are mutually orthogonal. Specifically, when viewing the front of the fire hydrant device with various doors, the X direction is the left-right direction, the Y direction is the up-down direction, and the Z direction is the front-back direction. Furthermore, in the X direction, the +X side is the right side and the -X side is the left side; in the Y direction, the +Y side is the upper side and the -Y side is the lower side; and in the Z direction, the +Z side is the front side and the -Z side is the rear side. Note that the Z direction is not shown in Figures 2 and 3.

[0054] (b1. Structure of fire hydrant system) First, let's explain the structure of the fire hydrant system. As shown in Figure 2, the fire hydrant system 16 has a structure divided into a housing 60 which houses the fire hydrant and a housing 62 which houses the fire extinguisher, and decorative frames 64 and 66 are attached to the front of the housings 60 and 62.

[0055] Furthermore, the door opening of the decorative frame 64 of the housing 60 is divided into upper and lower sections. A forward-tilting fire hydrant door 70 that opens downward by hinge is provided on the lower side of the door opening, and a maintenance door 68 that opens upward by hinge is provided on the upper side of the door opening. Inside this maintenance door, a fire hydrant storage compartment houses fire hydrant equipment, including a fire hose and valves such as a fire hydrant valve. The fire hydrant door 70 is equipped with a door handle 72, and when a road user puts their hand into the door handle 72 and pulls it towards them, the lock is released and the fire hydrant door 70 can be opened.

[0056] Furthermore, a door detection switch 74 is provided, for example, on the left side of the door opening of the fire hydrant door 70. The door detection switch 74 is a switch that operates when a road user pulls the door handle 72 towards them to open the fire hydrant door 70. Its structure and type are arbitrary, but for example, a limit switch equipped with a switch knob or switch lever that extends and retracts in accordance with the opening and closing operation of the fire hydrant door 70 is used. In this embodiment, the door detection switch 74 is turned off when the fire hydrant door 70 is closed and turned on when the fire hydrant door 70 is open.

[0057] Also, the cabinet 62 Makeup frame 66 To the left of the door opening, there is a fire extinguisher door 78 that opens horizontally to the left by a hinge, and the fire extinguisher storage area inside can accommodate, for example, two fire extinguishers. The fire extinguisher door 78 is equipped with a door handle 80, and when a road user puts their hand on the door handle 80 and pulls it towards them, the lock is released and the fire extinguisher door 78 can be opened. In addition, a viewing window 82 is provided on the lower side of the fire extinguisher door 78, allowing the presence or absence of fire extinguishers to be checked from the outside.

[0058] Also, decorative frame 66To the right of the door opening, there is an electrical door 84 that opens horizontally to the right by a hinge. The electrical door 84 is equipped with electrical equipment such as a red indicator light 86, a transmitter 88, and a response lamp 90, and a telephone jack is provided inside the housing 62 of the electrical door 84.

[0059] The red indicator light 86 is always lit so that the location of the fire hydrant device 16 can be seen from a distance. In the event of a fire, when the transmitter 88 is pressed and its push button switch is turned on, a fire alarm signal is transmitted. Based on the fire alarm signal, the disaster prevention receiving panel 10 outputs a fire alarm, and in response, the disaster prevention receiving panel 10 transmits a response signal to the fire hydrant device 16 using R-type transmission control, causing the red indicator light 86 to flash and the response lamp 90 to light up.

[0060] (b2. Internal structure of a fire hydrant system) Next, the internal structure of the fire hydrant device 16 shown in Figure 2 will be explained. As shown in Figure 3, the inside of the housing 60, which serves as the fire hydrant storage section 100, is divided into a valve storage section 102 and a hose storage section 104.

[0061] In the valve storage section 102, a water tap 108 is connected to a water supply pipe 106 that is drawn in from the outside, and the water supply pipe 106 is branched downward and connected to a fire hose 114 via a fire hydrant valve 110 and an automatic pressure regulating valve 112.

[0062] The hose storage section 104 is equipped with a hose storage frame 116, which stores the fire extinguishing hose 114 that is pulled in from below by winding it inward clockwise or counterclockwise. A nozzle 120 is attached to the end of the fire extinguishing hose 114 that is pulled out through a hose guide 118 installed on the back side of the fire hydrant door 70, and the nozzle 120 is detachably held in a nozzle holder 122.

[0063] The fire hydrant valve 110 is opened and closed by a fire hydrant valve opening / closing lever 124 provided in an operation box 125 installed on the back side of the fire hydrant door 70. The fire hydrant valve 110 is opened and closed in conjunction with the opening and closing operation of the fire hydrant valve opening / closing lever 124 by a known wire link mechanism provided between the operation box 125 and an interlocking box 126 provided on the fire hydrant valve 110 in correspondence with the operation box 125.

[0064] Furthermore, a pump start interlocking switch 130 is provided in the interlocking box 126 that turns on and off in response to the opening and closing of the fire hydrant valve 110, and transmits a pump start signal when turned on. A pump start switch 128 is also provided to the upper right of the water tap 108 for use by the fire brigade, and transmits a pump start signal when turned on.

[0065] Furthermore, the interior of the housing 62 (the side with the fire extinguisher door 78) is a fire extinguisher storage section 65, which houses two fire extinguishers 132. Terminal boxes 92 and 94 are installed on the rear of the fire extinguisher storage section 65. A red indicator light 86, provided on the electrical door 84, is connected to terminal box 92 via a wiring cable, and a transmitter 88, response lamp 90, telephone jack, pump start switch 128, and pump start interlock switch 130, provided on the electrical door 84 and valve storage section 102, are connected to terminal box 94 via wiring cables.

[0066] Furthermore, a cable rack 133 is installed above the valve storage section 102 within the housing 60, extending from near the center to the fire hydrant storage section 104. The cable rack 133 is used to pass high-voltage cables through which high-voltage cables drawn into the valve storage section 102 from the outside are connected to the terminal box 92, low-voltage cables through which low-voltage cables drawn into the valve storage section 102 from the outside are connected to the terminal box 94, and wiring cables from the pump start switch 128 and the pump start interlocking switch 130 are also passed through the terminal box 94.

[0067] Furthermore, a terminal control device 58 is installed below the terminal boxes 92 and 94 on the rear of the fire extinguisher storage section 65. The terminal control device 58 is where the transmission lines 1210 and 1220 drawn from the disaster prevention receiving panel 10 are connected, and it performs the transmission and reception of signals using R-type transmission control between it and the disaster prevention receiving panel 10. Alternatively, the necessary wiring to the terminal control device 58 may be routed through the cable rack 133. Details of the terminal control device 58 will be described separately.

[0068] (b3. Fire hydrant valve operation mechanism) Next, the fire hydrant valve operating mechanism provided in the fire hydrant system will be described. As shown in Figure 3, a fire hydrant valve operating mechanism 134, shown in Figure 4, is provided between the operating box 125 installed on the back side of the fire hydrant door 70 and the interlocking box 126 provided on the fire hydrant valve 110.

[0069] The fire hydrant valve operating mechanism 134 comprises a fire hydrant valve opening / closing lever 124, a driving pulley 136, a driven pulley 138, and a pair of wires 140 and 142. The fire hydrant valve opening / closing lever 124 is connected to the pivot axis of the driving pulley 136, and the driving pulley 136 rotates when the fire hydrant valve opening / closing lever 124 is rotated between the closed and open positions. The driving pulley 136 and the driven pulley 138 are connected by wires 140 and 142, and the rotation of the driving pulley 136 causes one wire 140 and 142 to be pulled in and the other wire 140 and 142 to be pushed out, thereby rotating the driven pulley 138. Furthermore, since the driven pulley 138's pivot shaft is connected to the valve shaft of the fire hydrant valve 110, the rotation of the driven pulley 138 opens and closes the fire hydrant valve 110, and the fire hydrant valve can be opened and closed using the fire hydrant valve opening / closing lever 124.

[0070] To remotely inspect the fire hydrant valve operating mechanism 134 configured in this way, a motor 152 is connected to the pivot shaft of the driving pulley 136, and the motor 152 rotates the driving pulley 136, allowing for experimental verification of the operation of the fire hydrant valve operating mechanism 134. Although the motor 152 is connected to the pivot shaft of the driving pulley 136, the installation position of the motor 152 is arbitrary as long as the fire hydrant valve operating mechanism 134 can be inspected remotely; for example, it could be connected to the pivot shaft of the driven pulley 138.

[0071] Furthermore, when inspecting the fire hydrant valve operating mechanism 134, it is necessary to minimize the opening of the fire hydrant valve 110 in order to suppress the flow of fire extinguishing water into the fire hose. For this reason, in order to detect the opening degree of the fire hydrant valve 110 during inspection at the inspection unit, a rotating cam 158 is connected to the rotating shaft of the driven pulley 138 to which the valve shaft of the fire hydrant valve 110 is connected, and an opening degree detection switch 156, such as a limit switch, is provided on the rotating cam 158. The opening degree detection switch 156 is in the off state when the fire hydrant valve 110 is in the fully closed position as shown in the figure, and when the driving pulley 136 is rotated by the opening drive of the motor 152 (drive to open the fire hydrant valve), the rotating cam 158 is pushed up by the cam step when it rotates to a predetermined rotation angle θ, and the switch turns on. The rotation angle θ that turns on the opening detection switch 156 of the rotating cam 158 is arbitrary, but it is set to an angle of a few degrees, which is a few percent of the rotation angle between fully open and fully closed (e.g., 90°).

[0072] Furthermore, various malfunctions can occur in the fire hydrant valve operating mechanism 134 during operation due to environmental factors such as temperature and humidity, but the main ones to consider are, for example, sticking, breaking, or loosening of the wires 140 and 142. Of these, sticking and breaking of the wires 140 and 142 are serious malfunctions that cause the fire hydrant system to lose its function as a fire hydrant device, as the fire hydrant valve 110 cannot be opened even when the fire hydrant valve opening / closing lever 124 is operated, and therefore require immediate repair. In contrast, loosening of the wires 140 and 142 does not require immediate repair because the fire hydrant valve 110 can still be opened and closed using the fire hydrant valve opening / closing lever 124, and is therefore treated as a warning sign of a malfunction. It is also possible to treat this as a malfunction, similar to sticking and wire breakage.

[0073] (b4. Terminal control device) Next, we will describe a terminal control device equipped with an inspection control unit for inspecting the fire hydrant valve operating mechanism installed in a fire hydrant system.

[0074] In this embodiment, the inspection unit includes, in addition to the inspection control unit 146 and motor 152 of the terminal control device 58, a transmission unit 144 for receiving instructions from the disaster prevention receiving panel 10 (external), a motor drive unit 150 for driving the motor 152, a current detection unit 154 for detecting the current flowing to the motor 152 by the inspection control unit 146, an opening degree detection switch 156 for detecting the opening degree of the fire hydrant valve 110 by the inspection control unit 146, and a door detection switch 74 for detecting the opening of the fire hydrant door 70 by the inspection control unit 146.

[0075] The terminal control device 58 is equipped with a transmission unit 144 and an inspection control unit 146. The transmission unit 144 transmits and receives signals to and from the disaster prevention receiving panel 10 using R-type transmission control. The inspection control unit 146 is a computer circuit equipped with a CPU, memory, and various input / output ports. The CPU executes a program to realize the function of inspecting and controlling the fire hydrant valve operating mechanism 134. The transmission unit 144 is also pre-configured with a unique address for transmitting and receiving signals to and from the disaster prevention receiving panel 10 via transmission lines 1210 and 1220 (transmission line 1210 in Figure 5) using R-type transmission control.

[0076] Furthermore, the motor drive unit 150, the current detection unit 154, and the opening degree detection switch 156 are connected to the inspection control unit 146.

[0077] When the inspection control unit 146 receives an inspection instruction from the disaster prevention receiving panel via the transmission unit 144, it outputs a control signal to the motor drive unit 150 and controls the drive of the motor 152 in order to perform an inspection operation on the fire hydrant valve operating mechanism 134.

[0078] The inspection control unit 146 can arbitrarily control the motor 152's drive, but for example, the inspection control unit 146 may cause the motor 152 to perform a forward rotation to open the fire hydrant valve, and when this opening drive operates the fire hydrant valve operating mechanism 134, the rotating cam 158 turns on the opening degree detection switch 156, and when the inspection control unit 146 receives an ON signal from the opening degree detection switch 74, it may control the motor 152 to stop its forward rotation to open and instead perform a reverse rotation to close it.

[0079] Furthermore, since the fire hydrant valve operating mechanism 134 may not operate even if the motor 152 is driven due to wire sticking or the like, if the inspection control unit 146 does not receive an ON signal from the opening detection switch 156 and a predetermined time has elapsed since the motor 152 was driven to open by forward rotation, the system is designed to stop the motor 152's forward rotation to open and instead perform a reverse rotation to close the valve.

[0080] Furthermore, the current flowing through the motor 152 when the motor drive unit 150 drives the motor 152 is detected by the current detection unit 154 and output to the inspection control unit 146. Since the current flowing through the motor 152 corresponds to the torque applied to the motor 152, the inspection control unit 146 determines the state of the fire hydrant valve operating mechanism 134 based on the detected current and transmits the determination result to the disaster prevention receiving panel via the transmission unit 144 for display. Note that the current detection unit 154 may be configured as an integral part of the inspection control unit 146.

[0081] The inspection control unit 146 determines the state of the fire hydrant valve operating mechanism 134 based on, for example, the detected current of the motor 152, determining whether the wire is stuck, broken, or loose. For example, the inspection control unit 146 determines that the wire is stuck if the detected current of the motor 152 exceeds a predetermined upper limit current value. Here, the predetermined upper limit current value is arbitrary, but for example, it is set to a current value several percent lower than the maximum rated current of the motor 152. The control unit 146 also determines that the wire is broken if, for example, the detected current of the motor 152 is less than a predetermined drive current value. Here, the predetermined drive current value is arbitrary, but for example, it is set to the rated current value of the motor 152. Furthermore, the control unit 146 determines that the wire is loose if, for example, the detected current of the motor 152 goes from being below a predetermined drive current value to exceeding a predetermined drive current value at some point. Furthermore, the judgment result transmitted to the disaster prevention receiving panel may include not only the status of the fire hydrant valve operating mechanism 134, such as whether the wire is stuck, cut, or loose, and the quality of the fire hydrant valve mechanism 134 based on this (whether the fire hydrant valve mechanism 134 is in an appropriate and normal state or not), but also information such as the current value of the detected current, the torque value corresponding to the detected current, and the date and time (timestamp) on which the judgment was made.

[0082] Furthermore, a door detection switch 74 for detecting the opening and closing of the fire hydrant door 70 is connected to the inspection control unit 146. When the door detection switch 74 is turned on and the inspection control unit 146 detects that the fire hydrant door 70 is open, the inspection control unit 146 controls itself to prohibit the inspection operation of the fire hydrant valve operating mechanism 134, even if it has received an inspection instruction from the disaster prevention receiving panel 10. Therefore, when the fire hydrant door 70 is open during a fire, the inspection operation of the fire hydrant valve operating mechanism 134, which would interfere with the operation of the fire hydrant valve opening / closing lever 124 by the user, is prohibited, and the operation of the fire hydrant device 16 by the user takes priority.

[0083] [c. Disaster Prevention Receiving Panel] Next, we will explain the disaster prevention receiving panel. For this explanation, please refer to Figure 6, which shows the configuration of the disaster prevention receiving panel.

[0084] As shown in Figure 6, the disaster prevention receiving panel 10 is equipped with a control unit 40, and further connected to the control unit 40 are transmission units 4210, 4220, an alarm unit 45, a display unit 46, an operation unit 48, a modem 50, and a P-type transmission unit 52.

[0085] The control unit 40 is a computer circuit equipped with a CPU, memory, various input / output ports, etc., and functions such as inspection and control of the fire hydrant system are realized by the execution of a program by the CPU.

[0086] Furthermore, transmission lines 1210 and 1220 are drawn from transmission units 4210 and 4220 to correspond to the fire hydrant devices 16 installed in the uphill tunnel 1 and downhill tunnel 2, respectively. The alarm unit 45 is equipped with a speaker and an alarm indicator light, the display unit 46 is equipped with a liquid crystal display, the operation unit 48 is equipped with various switches, a data transmission line for connecting the IG slave station equipment 26 is drawn from the modem 50, and individual P-type signal lines 14 are drawn from the P-type transmission unit 52 to connect the ventilation equipment 28, the alarm display board equipment 30, the radio rebroadcasting equipment 32, the television monitoring equipment 34, the lighting equipment 36, and the fire pump equipment 24.

[0087] The control unit 40 controls the inspection of the fire hydrant system 16 by sequentially sending inspection instruction control commands that specify the addresses of terminal control devices 58 provided on the fire hydrant system 16 at predetermined intervals, for example, once every hour, and receiving and reporting a response signal that includes a determination result indicating the status of the fire hydrant valve operating mechanism 134.

[0088] The control unit 40 notifies the system of its judgment results. For example, in the case of wire sticking or breakage, immediate repair is required, and to inform maintenance personnel who are required to respond on-site, the alarm unit 45 outputs a fault alarm and the display unit 46 displays the details of the fault, such as wire sticking or breakage. In the case of wire loosening, it is treated as a sign of a malfunction, and no alarm is output from the alarm unit 45, only a display is shown on the display unit 46. However, although immediate action is not required, leaving it unattended could lead to inoperability, so for example, the information is transmitted from the modem 50 via the IG slave station equipment 26 to an external remote monitoring system, and from the remote monitoring system to a terminal device of a support system such as the manufacturer's, enabling necessary action. This allows wire loosening, which does not require emergency response, to be dealt with without burdening the maintenance personnel who maintain the tunnel. Furthermore, the notification of the judgment result is not limited to this method. The judgment result may also be received by higher-level equipment located above the disaster prevention receiving panel (such as remote monitoring equipment), or by terminal devices held by remote maintenance personnel, etc., via the disaster prevention receiving panel or a designated communication network, and information corresponding to the information contained in the judgment result received by said terminal devices, etc., may be notified.

[0089] [d. Inspection and control of fire hydrant valve operating mechanism] The inspection and control of the fire hydrant valve operating mechanism 134 by the terminal control device 58 of the fire hydrant system 16 shown in Figure 5 will be explained. In this explanation, refer to Figure 7, which is a flowchart showing the inspection and control of the fire hydrant valve operating mechanism.

[0090] The inspection control unit 146 of the terminal control device 58 receives an inspection instruction from the disaster prevention receiving panel 10. If it has not detected that the fire hydrant door 70 has been opened by the door detection switch 74, it drives the motor 152 provided on the fire hydrant valve operating mechanism 134 to open, causing the fire hydrant valve operating mechanism 134 to perform an inspection operation (steps S1 to S3). If the door detection switch 74 has detected that the fire hydrant door 70 has been opened, the inspection control is not performed, and the system returns to determining whether an inspection instruction has been received from the disaster prevention receiving panel 10 (steps S1 and S2).

[0091] Next, the inspection control unit 146 detects the current flowing to the motor 152 when it is driven to open, and if it determines that the opening degree detection switch 156 is ON, it stops the opening drive of the motor 152 and causes it to perform a closing drive (steps S5, S7).

[0092] On the other hand, if the opening degree detection switch 156 is not detected as ON while the motor 152 is being driven to open, and a predetermined time has elapsed, the motor 152 is stopped from opening and is forced to close (steps S5 to S7).

[0093] Next, the inspection control unit 146 determines the state of the fire hydrant operating mechanism 134 (e.g., wire stuck, cut, or loose) based on the detected current of the motor 152, and the determination result is displayed on the disaster prevention receiving panel. 10 Send a response and return to the confirmation of receipt of the next inspection instruction (steps S8, S9, S1).

[0094] [j. Modifications of the present invention] Modifications of the fire hydrant system and disaster prevention system according to the present invention will now be described. In addition to the embodiments described above, the fire hydrant system and disaster prevention system of the present invention include the following modifications.

[0095] (Determination by the disaster prevention receiver panel) In the above embodiment, the status is determined from the motor current when the fire hydrant valve operating mechanism is experimentally operated by a terminal control device installed in the fire hydrant system, and the determination result is transmitted to the disaster prevention receiving panel. Alternatively, a motor that experimentally operates the fire hydrant valve operating mechanism of the fire hydrant system may be connected to a power line for motor drive that is drawn out from the disaster prevention receiving panel into the tunnel, and the status of the fire hydrant valve operating mechanism may be determined by detecting the current flowing through the motor that is operated in response to an inspection instruction from the disaster prevention receiving panel.

[0096] (Inspection Instructions) In the above embodiment, the control unit of the disaster prevention receiving panel issued inspection instructions. However, instructions are not limited to those issued by the disaster prevention receiving panel. Inspection instructions may also be issued via the disaster prevention receiving panel or a predetermined communication network from higher-level equipment located above the disaster prevention receiving panel (such as remote monitoring equipment), or from terminal devices held by maintenance personnel, for example.

[0097] (P-type transmission) Furthermore, while the above embodiment took an example of R-type transmission control in which an address is set in the terminal control device of the fire hydrant system to instruct inspection, it is also possible to use P-type (Proprietary-type) transmission control in which a signal line is drawn out and connected for each fire hydrant system from the disaster prevention receiving panel, and the status of the fire hydrant valve operating mechanism is determined on a per-signal line basis based on the inspection instruction.

[0098] (others) Furthermore, the present invention includes appropriate modifications that do not impair its purpose and advantages, and is not limited by the numerical values ​​shown in the above embodiments. [Explanation of Symbols]

[0099] 1: Upbound Tunnel 2: Downbound Tunnel 3: Evacuation tunnel 10: Disaster Prevention Receiving Panel 12: Transmission Cable 1210,1220: Transmission line 14: Type P signaling circuit 16: Fire hydrant system 18: Relay Amplifier Panel 24: Fire pump equipment 26:IG slave station equipment 28: Ventilation equipment 30: Alarm display board equipment 32: Radio rebroadcasting equipment 34: Television surveillance equipment 36: Lighting equipment 40: Control Unit 4210, 4220: Transmission section 58: Terminal control device 60,62: Enclosure 64, 66: Decorative frame 65: Fire extinguisher storage compartment 68: Maintenance Door 70: Fire hydrant door 72,80: Door handle 74: Door detection switch 78: Fire extinguisher door 82: Peephole 84: Electric Door 86: Red indicator light 88: Transmitter 90: Response lamp 92,94:Terminal box 100: Fire hydrant storage area 102: Valve storage compartment 104: Hose storage compartment 106: Water supply piping 108: Water tap 110: Fire hydrant valve 112: Automatic pressure regulating valve 114: Fire hose 116: Hose storage frame 118: Hose Guide 120: Nozzle 122: Nozzle holder 124: Fire hydrant valve opening / closing lever 125: Control Box 126: Interlocking Box 128: Pump start switch 130: Pump start-linked switch 132: Fire extinguisher 133: Cable Rack 134: Fire hydrant valve operation mechanism 136: Driving pulley 138: Driven pulley 140,142: Wire 144: Transmission section 146: Inspection and Control Unit 150: Motor drive unit 152: Motor 154: Current detection unit 156: Opening degree detection switch 158: Rotating cam

Claims

1. A fire hydrant system equipped with a fire hydrant valve operating mechanism for opening and closing a fire hydrant valve installed in a pipe to which a fire hose is connected, The system includes an inspection unit that, in response to an external instruction, inspects and operates the fire hydrant valve operating mechanism to determine the state of the fire hydrant valve operating mechanism, The fire hydrant system is characterized in that, when the inspection unit detects that the fire hydrant door provided in the fire hydrant system is open, it does not perform inspection operation on the fire hydrant valve operating mechanism even when instructed from the outside.

2. A fire hydrant device according to claim 1, The aforementioned fire hydrant valve operating mechanism is An operating unit that is operated between an open position that opens the fire hydrant valve and a closed position that closes the fire hydrant valve, The operating unit is connected to a drive pulley that rotates when the operating unit is operated, A driven pulley connected to the valve shaft of the fire hydrant valve, A pair of wires connects the driving pulley and the driven pulley, and transmits the rotation of the driving pulley to the driven pulley. Equipped with, The inspection unit is, A motor provided on either the driving pulley side or the driven pulley side, An inspection control unit, which, in response to an external instruction, drives the motor to perform an inspection operation on the fire hydrant valve operating mechanism, detects the current flowing through the motor, and determines the state of the fire hydrant valve operating mechanism, A fire hydrant device characterized by being equipped with the following features.

3. A fire hydrant device according to claim 2, The fire hydrant system is characterized in that the inspection control unit determines whether the state of the fire hydrant valve operating mechanism is that the wire is stuck, the wire is cut, or the wire is loose.

4. A fire hydrant device according to claim 3, The inspection control unit, If the detected current flowing through the motor exceeds a predetermined upper limit current value, it is determined that the wire is stuck. If the detected current flowing through the motor is less than a predetermined drive current value, it is determined that the wire has been cut. A fire hydrant device characterized in that it determines that the wire is loose when the current flowing to the detected motor exceeds the predetermined drive current value at some point after being below the predetermined drive current value.

5. A fire hydrant device according to claim 3, The inspection control unit, If the wire is found to be stuck or cut, a predetermined notification control is performed as a malfunction of the fire hydrant valve operating mechanism. A fire hydrant system characterized in that, when slack in the wire is detected, a notification control different from the notification control for a fire hydrant valve operating mechanism failure is performed as a precursor to a failure of the fire hydrant valve operating mechanism.

6. A fire hydrant device according to claim 2, The fire hydrant system is characterized in that, when the inspection control unit detects a predetermined opening degree of the fire hydrant valve, it stops the opening drive of the motor that increases the opening degree of the fire hydrant valve and performs a closing drive that decreases the opening degree of the fire hydrant valve.

7. A fire hydrant device according to claim 2, The fire hydrant system is characterized in that the inspection control unit detects the opening of the fire hydrant door.

8. A disaster prevention system that connects terminal equipment including a fire hydrant device according to any one of claims 1 to 7 to a disaster prevention receiving panel for monitoring, The inspection unit of the fire hydrant device, upon receiving instructions from the disaster prevention receiving panel, performs an inspection operation on the fire hydrant valve operating mechanism to determine the state of the fire hydrant valve operating mechanism. The disaster prevention system is characterized in that the disaster prevention receiving panel transmits instructions to the inspection unit of the fire hydrant device at a predetermined timing, and displays the determination result of the state of the fire hydrant valve operating mechanism determined by the inspection unit of the fire hydrant device based on the received instructions.

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