Fire hydrant system and its installation method

Abstract

This makes it possible to easily and simply perform wiring work to connect an external electrical circuit to a fire hydrant system from the outside. [Solution] The fire hydrant system housing consists of a fire extinguisher / electrical equipment housing 10b on which a terminal box for connecting external electrical circuits is arranged, a fire hydrant equipment housing 10a connected to the fire extinguisher / electrical equipment housing 10b in the installed state and having fire hydrant equipment arranged inside, and a door structure that can be opened and closed or a removable partition plate arranged on the side of these housings. The fire extinguisher / electrical equipment housing 10b has a side work opening 40 on the side of the housing to which the fire hydrant equipment housing 10a is connected in the installed state, which can be used when wiring work to connect external electrical circuits to the terminal box and is formed by opening or removing the partition plate, and a connecting surface 42 on which a through hole 44 is formed for connecting and fixing the fire hydrant equipment housing 10a in a position that closes the side work opening 40 when the fire hydrant equipment housing 10a is installed.

Description

Technical Field

[0001] The present invention relates to a fire hydrant device in which an electric circuit is laid inside and fire hydrant equipment is arranged, and a construction method thereof.

Background Art

[0002] Conventionally, a fire hydrant device has been installed as an emergency facility in a tunnel such as a highway or a motorway that is a fire target area. The fire hydrant device has a fire hose with a nozzle attached to its tip, valves including a fire hydrant valve, and a fire hydrant valve opening / closing lever as fire hydrant equipment stored and installed (arranged) in a fire hydrant storage section inside a housing equipped with a fire hydrant door, and, for example, two fire extinguishers are stored (arranged) in a fire extinguisher storage section inside a housing equipped with a fire extinguisher door. In addition, the fire hydrant device is generally embedded and installed in a cut-out portion of the tunnel wall at intervals of, for example, 50 meters in the longitudinal direction of the tunnel.

[0003] In addition, the fire hydrant device provides an electrical equipment door adjacent to the fire extinguisher door of the fire extinguisher storage section, arranges electrical equipment such as a red indicator light, a transmitter, and a response lamp on the electrical equipment door, provides a terminal box in the fire extinguisher storage section inside the housing, the electrical equipment is connected to the terminal box by a wiring cable (internal electric circuit), and a wiring cable (external electric circuit) drawn from the outside is connected to the terminal box.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Incidentally, in construction work to install fire hydrant systems in box-shaped sections of tunnel walls along guardian walkways, a frame is first installed and fixed at the bottom of the box-shaped section. Then, using a crane or similar equipment, the fire hydrant system, manufactured at a factory or elsewhere, is placed on the installed frame and fixed into the box-shaped section. Subsequently, wiring work (wiring work) is carried out to connect the fire hydrant system by pulling wiring cables from the outside. In addition, piping work (piping work) for valves and other components of the fire hydrant system is carried out at a different time from these construction works.

[0006] However, the wiring work for fire hydrant systems involves connecting externally routed wiring cables to terminal blocks on terminal boxes located at the back of the fire extinguisher storage area inside the enclosure. This work requires opening the fire extinguisher doors and reaching inside the enclosure in a confined space, making the wiring work time-consuming and laborious. Furthermore, since each of the numerous fire hydrant systems installed at 50-meter intervals requires individual wiring, this is a major factor in extending the overall construction period.

[0007] The present invention focuses on the fact that wiring and piping work for fire hydrant systems are carried out at different times, and aims to provide a fire hydrant system and a method for installing the same that enables simple and easy wiring work to connect an external electrical circuit to the fire hydrant system from the outside. [Means for solving the problem]

[0008] (Fire hydrant system) The present invention relates to a fire hydrant system in which an electrical circuit is laid inside and a fire hydrant device is arranged, The fire hydrant system casing is A first enclosure is provided, which has a circuit connection section for connecting circuits, including external circuits drawn in from the outside, The second enclosure, which is connected to the first enclosure in its installed state and has fire hydrant equipment located inside, It is divided and composed of, The first cabinet is, On the side of the enclosure where the second enclosure is connected in the installed state, there is a side work opening that can be used when wiring work is performed to connect the external electrical circuit to the electrical circuit connection point, A connecting structure that secures the second enclosure in a position that closes the side work opening when the second enclosure is installed, It is characterized by having the following features.

[0009] (Equipment to be placed in the first and second enclosures) The first enclosure has predetermined electrical equipment arranged in the electrical circuit connection section, connected by an internal electrical circuit. The second enclosure, as a fire hydrant device, is connected to the electrical circuit connection point via internal electrical circuits and houses an operating unit for activating the external pump equipment.

[0010] (external circuit) The external electrical circuit is drawn into the interior from a predetermined location in the first enclosure.

[0011] (Installation method for fire hydrant systems) The present invention relates to a method for constructing a fire hydrant system in which an electrical circuit is laid inside and fire hydrant equipment is housed, The fire hydrant system casing is A first enclosure is provided, which has a circuit connection section for connecting circuits, including external circuits drawn in from the outside, The second enclosure, which is connected to the first enclosure in its installed state and has fire hydrant equipment located inside, It is divided and composed of, The installation of fire hydrant systems is Install the first enclosure in the designated location. With the first enclosure installed at the aforementioned installation location, wiring work is performed to connect the external electrical circuit to the electrical circuit connection point, utilizing the side work opening formed on the side of the enclosure where the second enclosure will be attached in a subsequent process, and the empty area where the second enclosure will be placed. The method is characterized by installing the second housing by connecting and fixing it in a position that closes the side work opening of the first housing after the wiring work is completed.

[0012] (Equipment to be placed in the first and second enclosures and their wiring work) Before the installation of the fire hydrant system, The first enclosure houses the specified electrical equipment, and the second enclosure houses the fire hydrant equipment, including the control unit for starting the external pump equipment. The electrical circuit connection section and the electrical equipment located in the first enclosure are connected by an internal electrical circuit, and an internal electrical circuit is drawn out from the electrical circuit connection section to connect to the control section located in the second enclosure. During wiring work in the installation of fire hydrant systems, The internal electrical circuit for connecting to the control unit located in the second enclosure is routed through a side access opening into the available space. [Effects of the Invention]

[0013] (Effectiveness of fire hydrant systems) The present invention relates to a fire hydrant system in which an electrical circuit is laid inside and a fire hydrant device is arranged, wherein the housing of the fire hydrant system is divided into a first housing in which an electrical circuit connection part is arranged for connecting an electrical circuit including an external electrical circuit drawn in from the outside, and a second housing which is connected to the first housing in the installed state and in which the fire hydrant device is arranged inside, and the first housing is provided with a side work opening on the side of the housing to which the second housing is connected in the installed state, which can be used when wiring work is performed to connect the external electrical circuit to the electrical circuit connection part, and a connecting structure that connects and fixes the second housing in a position that closes the side work opening when the second housing is installed, so that the first housing to be wired is installed first and the wiring work is performed before the second housing is installed, the wiring work can be performed using the side work opening and the empty space before the second housing is installed, a sufficiently large workspace is secured compared to conventional wiring work performed from a door opening, making it possible to perform wiring work inside the first housing in an easy and simple manner and shortening the construction period required for wiring work.

[0014] (Effects of the equipment placed in the first and second enclosures and the wiring work involved) In addition, in the first housing, a predetermined electrical equipment connected to the circuit connection part by an internal circuit is arranged. The second housing is a fire hydrant device, which is connected to the circuit connection part by an internal circuit, and an operation part for starting an external pump facility is arranged. When laying a circuit up to the second housing side in order to draw out an internal circuit for connecting to the operation part arranged in the second housing from the side work opening to the empty area during the wiring work in the construction of the fire hydrant device, by using the side work opening, the wiring work can be performed simply and easily.

[0015] Also, in the invention of the method of implementing the fire hydrant device, the same effects as those in the case of the fire hydrant device described above can be obtained, so the description thereof is omitted.

Brief Description of the Drawings

[0016] [Figure 1] It is an explanatory diagram showing a fire hydrant device installed in the cut-out part of the tunnel wall surface. [Figure 2] It is an explanatory diagram showing the side surface of FIG. 1 in cross section. [Figure 3] It is an explanatory diagram showing the internal structure of the fire hydrant device from the front with the fire hydrant door, maintenance door, and fire extinguisher door in the open state. [Figure 4] It is an explanatory diagram showing the fire extinguisher and electrical equipment storage housing taken out. [Figure 5] It is an explanatory diagram showing the fire hydrant device storage housing taken out. [Figure 6] It is an explanatory diagram showing the connection structure of the divided housings. [Figure 7] It is an explanatory diagram showing the state in which the fire extinguisher and electrical equipment storage housing is installed in the cut-out part. [Figure 8] It is an explanatory diagram showing the state before the wiring work of the fire extinguisher and electrical equipment storage housing. [Figure 9] It is an explanatory diagram showing the state after the completion of the wiring work of the fire extinguisher and electrical equipment storage housing. [Figure 10] It is an explanatory diagram showing the terminal box taken out. [Figure 11] It is an explanatory diagram showing the cable wiring system of the fire hydrant device. [Figure 12] This is an explanatory diagram showing the details of the wiring to the terminal box to which low-voltage cables are connected. [Modes for carrying out the invention]

[0017] The following describes in detail, with reference to the drawings, embodiments of the fire hydrant system and its installation method according to the present invention. However, the present invention is not limited to the following embodiments.

[0018] [Basic Concepts of the Embodiment] First, the basic concept of the embodiment will be explained. The embodiment generally relates to a fire hydrant system in which electrical circuits are laid inside and fire hydrant equipment is arranged. The installation location of the fire hydrant system is arbitrary, but includes, for example, installation in a box-shaped section of the tunnel wall along a monitoring staff passage in a tunnel with a road.

[0019] Here, "fire hydrant system" refers to a type of emergency equipment installed in areas that are subject to fire extinguishing, such as tunnels on expressways or motorways. The fire hydrant equipment located inside includes fire hoses, valves, and operating parts for activating the pump equipment, which is a type of emergency equipment, such as pump activation switches and pump activation interlocking switches. "Arrangement" is a concept that includes storage, installation, mounting, and attachment. In addition to fire hydrant equipment, a fire hydrant system may also include electrical equipment such as red indicator lights and transmitters, and fire extinguishers. Furthermore, the concept of "arrangement" in this embodiment includes storage, installation, mounting, and attachment even when applied to other items not limited to fire hydrant equipment.

[0020] Furthermore, the "electrical circuit" installed in a fire hydrant system refers to the electrical pathway that supplies power to the operating unit and electrical equipment used to start the pump equipment located in the fire hydrant system, which requires a power source. This includes, for example, wiring cables, wiring, and lines. In this embodiment, the "electrical circuit" is defined as the "external circuit" that is drawn in from outside the fire hydrant system, and the "internal circuit" that is connected to equipment located in the fire hydrant system, such as the operating unit and electrical equipment.

[0021] Furthermore, the fire hydrant device of this embodiment has a housing that is divided into a first housing and a second housing. Here, the "first housing" is where the electrical circuit connection section for connecting electrical circuits, including external electrical circuits drawn in from the outside, is located, and the "second housing" is connected to the first housing in the installed state and has the fire hydrant equipment located inside. The "electrical circuit connection section" is the part to which the electrical circuits are connected, and the configuration and type for connecting the electrical circuits are arbitrary, but for example, it may include a terminal box equipped with a terminal block.

[0022] Furthermore, the "first enclosure" of the embodiment includes a side access opening on the side of the enclosure to which the second enclosure is connected when installed, which can be used when wiring work is performed to connect an external electrical circuit to the circuit connection part, and a connecting structure that connects and fixes the second enclosure in a position that closes the side access opening when the second enclosure is installed. Here, "can be used when wiring work is performed to connect an external electrical circuit to the circuit connection part" means that it can be used when performing such wiring work, but it does not mean that it is compelling or forcing the use of it when performing such wiring work, nor does it mean that the wiring work cannot be performed if it is not used.

[0023] Furthermore, the first enclosure houses predetermined electrical equipment connected to the electrical circuit connection section by an internal electrical circuit, while the second enclosure, as a fire hydrant device, houses an operating unit connected to the electrical circuit connection section by an internal electrical circuit for activating external pump equipment.

[0024] Furthermore, the external electrical circuit is drawn into the interior from a predetermined location in the first enclosure. Here, "a predetermined location in the first enclosure" refers to a location that is appropriate for laying the electrical circuit, taking into consideration the installation location of the fire hydrant device and its surrounding environment. For example, in the case of a fire hydrant device installed in a box-shaped section of the tunnel wall along a monitoring walkway in a tunnel with a road, this includes cases where the external electrical circuit is drawn in from the bottom of the first enclosure.

[0025] In the construction of the fire hydrant device according to this embodiment, the first housing is installed in a predetermined location, and with the first housing installed in the location, wiring work is performed to connect the external electrical circuit to the electrical circuit connection part using the side work opening formed on the side of the housing to which the second housing will be connected in a subsequent process and the empty area where the second housing will be placed, and after the wiring work is completed, the second housing is installed by connecting and fixing it in a position that closes the side work opening of the first housing, and the wiring work of the first housing is performed before the installation of the second housing.

[0026] Furthermore, if the first enclosure houses predetermined electrical equipment connected to the electrical circuit connection section by an internal electrical circuit, and the second enclosure, as a fire hydrant device, houses an operating unit for activating external pump equipment, connected to the electrical circuit connection section by an internal electrical circuit, then, before the construction of the fire hydrant system, the predetermined electrical equipment is placed in the first enclosure, and the fire hydrant device, including the operating unit for activating external pump equipment, is placed in the second enclosure. The electrical circuit connection section and the electrical equipment located in the first enclosure are connected by an internal electrical circuit, and an internal electrical circuit is drawn out from the electrical circuit connection section to connect to the operating unit located in the second enclosure. During the wiring work in the construction of the fire hydrant system, the internal electrical circuit for connecting to the operating unit located in the second enclosure is drawn out from the side work opening into an empty area.

[0027] The placement of electrical equipment and fire hydrant equipment, as well as the laying of internal electrical circuits, can be done at any time before the installation of the fire hydrant system. For example, the placement of electrical equipment and fire hydrant equipment, as well as the laying of internal electrical circuits, may be included in the manufacturing process of the fire hydrant system in a factory, and the placement of electrical equipment and fire hydrant equipment, as well as the laying of internal electrical circuits, may already be completed at the stage of the finished product. Furthermore, during the wiring work, the internal electrical circuits for connecting to the control unit located in the first housing will be routed from the side work opening into the available area, but the order of this work compared to the wiring work for the external electrical circuits is not important.

[0028] The following describes a specific embodiment. In this embodiment, the fire hydrant system is installed in a box-shaped section of the tunnel wall along a monitoring walkway in a tunnel with a road, and the "first housing" is a "fire extinguisher / electrical equipment housing", the "second housing" is a "fire hydrant equipment housing", the "electrical circuit connection section" is a "terminal box equipped with a terminal block", the "electrical circuit" is a "wiring cable", the "electrical equipment" is a "red indicator light, transmitter, response lamp and telephone jack", and the "operating section for starting external pump equipment", which is a type of fire hydrant equipment, is a "pump start switch and pump start interlock switch".

[0029] [Specific details of the embodiment] The fire hydrant system of this embodiment will be described in detail as follows: a. Fire hydrant system a1. Structure of a fire hydrant system a2. Internal structure of a fire hydrant system a3. Operating structure of a fire hydrant valve b. Divided structure of the fire hydrant system b1. Fire extinguisher and electrical equipment storage enclosure b2. Fire hydrant equipment housing c. Installation work for fire extinguisher and electrical equipment storage enclosures. d.Terminal box e. Cable wiring system for fire hydrant systems f. Modified versions of the present invention

[0030] [a. Fire hydrant system] First, let's explain the fire hydrant system. In this explanation, please refer to Figure 1, which shows the fire hydrant system installed in the box-shaped section of the tunnel wall; Figure 2, which shows a cross-sectional view of the side of Figure 1; and 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.

[0031] In the explanation of Figures 1 to 3, the X, Y, and Z directions are mutually orthogonal. Specifically, when viewing the front of the fire hydrant device equipped 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. This also applies to the X, Y, and Z directions shown in Figures 4 to 9, which represent embodiments of the present invention.

[0032] (a1. Configuration of a fire hydrant system) The configuration of the fire hydrant system will now be described. As shown in Figures 1 and 2, the fire hydrant system 10 is installed by being mounted and fixed on a frame 28 installed at the bottom of a box-shaped section 36 formed in the tunnel wall 35 along which the monitoring staff passage 38 of the tunnel with a road is provided.

[0033] As shown in Figure 1, the fire hydrant system 10 has a structure divided into a fire hydrant equipment housing 10a and a fire extinguisher / electrical equipment housing 10b, with decorative frames 11a and 11b positioned on the front of each.

[0034] The door opening of the decorative frame 11a of the fire hydrant equipment storage enclosure 10a is divided into upper and lower sections. A forward-tilting fire hydrant door 12 that opens downward by hinge is provided on the lower side of the door opening, and a maintenance door 14 that opens upward by hinge is provided on the upper side of the door opening. Inside the fire hydrant storage section, fire hydrant equipment such as a fire hose with a nozzle attached and valves including a fire hydrant valve are arranged (stored). The fire hydrant door 12 is provided with a door handle 1210, and when a road user puts their hand into the door handle 1210 and pulls it towards them, the lock is released and the fire hydrant door 12 can be opened.

[0035] On the left side of the door opening of the decorative frame 11b of the fire extinguisher / electrical equipment storage enclosure 10b, a fire extinguisher door 18 is provided that opens horizontally to the left by a hinge, allowing for the placement (storage) of, for example, two fire extinguishers in the fire extinguisher storage area inside. The fire extinguisher door 18 is equipped with a door handle 1810, and when a road user puts their hand into the door handle 1810 and pulls it towards them, the lock is released and the fire extinguisher door 18 can be opened. In addition, a viewing window 1820 is provided on the lower side of the fire extinguisher door 18, allowing the presence or absence of fire extinguishers to be checked from the outside.

[0036] An electrical door 20 is provided on the right side of the door opening of the decorative frame 11b, which opens horizontally to the right by a hinge. The electrical door 20 is equipped with electrical equipment such as a red indicator light 22, a transmitter 24, and a response lamp 26, and a telephone jack (not shown) is provided on the inside of the electrical door 20. Thus, the red indicator light 22, transmitter 24, response lamp 26, and telephone jack provided on the electrical door 20 constitute an emergency notification device.

[0037] The red indicator light 22 is always lit so that the location of the fire hydrant device 10 can be seen from a distance. In the event of a fire, when a road user confirms the fire and presses the push button on the transmitter 24, the push button switch is turned on, and a fire alarm signal (transmission signal) is sent to the disaster prevention receiver panel installed in the electrical room, etc. The disaster prevention receiver panel outputs a fire alarm, and in response, the disaster prevention receiver panel 10 sends a response signal to the fire hydrant device 10, causing the red indicator light 22 to flash and the response lamp 26 to light up.

[0038] (a2. Internal structure of a fire hydrant system) Next, the internal structure of the fire hydrant system 10 will be described. As shown in Figure 3, the fire hydrant storage section 16, which is located inside the fire hydrant equipment housing 10a, is divided into a valve storage section 1610 and a hose storage section 1620.

[0039] In the valve housing section 1610, a water supply pipe 55 drawn in from the outside is connected to a water tap 56, and the water supply pipe 55 is branched downward and connected to a fire hose 62 via a fire hydrant valve 57 and an automatic pressure regulating valve 58.

[0040] The hose storage section 1620 is provided with a hose storage frame 66, and the fire extinguishing hose 62, which is pulled in from below, is positioned (stored) by being wound inward in a clockwise or counterclockwise direction. A nozzle 64 is attached to the end of the fire extinguishing hose 62, which is pulled out through a hose guide 68 installed on the back side of the fire hydrant door 12, and the nozzle 64 is detachably held in a nozzle holder 65.

[0041] (a3. Operating structure of fire hydrant valves) The fire hydrant valve 57 is opened and closed by operating a fire hydrant valve opening / closing lever 60 located in an operation box 61 positioned on the back side of the fire hydrant door 70. The fire hydrant valve 57 is opened and closed in conjunction with the opening and closing operation of the fire hydrant valve opening / closing lever 60 by a known wire link mechanism provided between the operation box 61 and an interlocking box 67 located on the fire hydrant valve 57, corresponding to the operation box 61.

[0042] Furthermore, a pump start interlocking switch 74 is provided in the interlocking box 67 that turns on and off in response to the opening and closing of the fire hydrant valve 57, and when turned on, transmits a pump start signal. Another pump start switch 76 is provided to the upper right of the water tap 56 for use by the fire brigade, and when turned on, transmits a pump start signal.

[0043] The left side of the interior of the fire extinguisher and electrical equipment storage enclosure 10b (inside the fire extinguisher door 18) is the fire extinguisher storage section 19, where two fire extinguishers 34 are located (stored).

[0044] Terminal boxes 30 and 32 are located on the rear of the fire extinguisher storage section 19. A red indicator light 22 is connected to terminal box 30 via a wiring cable (internal circuit), and a transmitter 24, response lamp 26, and telephone jack 25 are connected to terminal box 32 via a wiring cable (internal circuit). In addition, a pump start switch 76 and a pump start interlock switch 74, which are located in the valve storage section 1610, are connected via a wiring cable (internal circuit), and external wiring cables (external circuits) are connected to terminal boxes 30 and 32.

[0045] Furthermore, a cable rack 70 is positioned above the valve storage section 1610 within the fire hydrant equipment storage housing 10a, extending from near the center to the hose storage section 1620, through which wiring cables for the pump start switch 76 and the pump start interlocking switch 74 are inserted.

[0046] [b. Divided structure of fire hydrant device] Next, the segmented structure of the fire hydrant system will be explained. For this explanation, please refer to Figure 4, which shows the fire extinguisher and electrical equipment housing removed; Figure 5, which shows the fire hydrant equipment housing removed; and Figure 6, which shows the connecting structure of the segmented housings. Figure 4(A) shows the front view, Figure 4(B) shows the right side view, and Figure 4(C) shows the front view with the fire extinguisher door removed. Also, Figure 5(A) shows the front view, and Figure 5(B) shows the left side view.

[0047] As shown in Figure 1, the fire hydrant device 10 of this embodiment is installed in a box-shaped section 36 of the tunnel wall 35, and its housing is divided into a fire hydrant equipment housing 10a and a fire extinguisher / electrical equipment housing 10b.

[0048] (b1. Fire extinguisher and electrical equipment storage enclosure) As shown in Figure 4, the fire extinguisher and electrical equipment housing 10b is assembled and manufactured in a factory or the like as a single independent housing, and a side work opening 40 is formed on the right side of the housing. A connecting surface 42 is formed by arranging frame members around the side work opening 40, and multiple through holes 44 are formed in this connecting surface 42, enabling the connection and fixing of the fire hydrant equipment housing 10a and the fire extinguisher and electrical equipment housing 10b using bolts and nuts.

[0049] Furthermore, during the assembly and manufacturing stage, wiring cables are used to connect the terminal box 30 to the red indicator light 22, the terminal box 32 to the transmitter 24, the response lamp 26, and the telephone jack 25. Wiring cables are also extended from the terminal box 32 to connect the pump start switch 76 and the pump start interlock switch 74 located in the fire hydrant equipment storage enclosure 10a. A fire extinguisher tray 3410 is provided on the inside bottom of the fire extinguisher / electrical equipment storage enclosure 10b for arranging (storing) fire extinguishers.

[0050] The completed fire extinguisher and electrical equipment housing 10b is transported as a finished product to the installation site inside the tunnel and installed by being attached and fixed to the left side of the frame 28 which is installed in the box-shaped section 36 of the tunnel wall 35.

[0051] (b2. Fire hydrant equipment housing) As shown in Figure 5, the fire hydrant equipment housing 10a is assembled and manufactured in a factory or similar facility as a single, independent housing. A connecting surface 48 is formed on the left side of the housing by the arrangement of a partition plate. Multiple through-holes 50 are formed around the connecting surface 48, corresponding to the multiple through-holes 44 formed on the connecting surface 42 of the fire extinguisher / electrical equipment housing 10b shown in Figure 4. This allows the fire hydrant equipment housing 10a and the fire extinguisher / electrical equipment housing 10b to be connected and fixed using bolts and nuts. In addition, a wiring port 72 is formed on the upper part of the connecting surface 48 at a position corresponding to the cable rack 70 shown in Figure 3, and the wiring port 72 serves as a wiring port for the cable rack 70.

[0052] Once the manufacturing and assembly of the fire hydrant equipment housing 10a is complete, it is transported to the installation site in the tunnel as a finished product, similar to the fire extinguisher and electrical equipment housing 10b. After the installation work (installation work) and wiring work (wiring work) of the fire extinguisher and electrical equipment housing 10b are completed, the fire hydrant equipment housing 10a is installed in the empty space to the right of the frame installed in the box-shaped section 36 of the tunnel wall surface 35, by attaching and fixing it to the frame adjacent to the already installed fire extinguisher and electrical equipment housing 10b. Furthermore, as shown in Figure 6, the installation of the fire hydrant equipment housing 10a involves positioning the connecting surface 48 of the fire hydrant equipment housing 10a against the connecting surface 42 of the fire extinguisher and electrical equipment housing 10b, aligning the surfaces, and fastening the connection by passing a bolt through one of the through-holes 44 and 48 and screwing it into a nut inserted from the other side to fasten and fix the fire hydrant equipment housing 10a and the fire extinguisher and electrical equipment housing 10b before installation.

[0053] [c. Installation work for fire extinguisher and electrical equipment storage enclosures] Next, we will explain the installation work for the fire extinguisher and electrical equipment housing. For this explanation, please refer to Figure 7, which shows the fire extinguisher and electrical equipment housing installed in the box section; Figure 8, which shows the fire extinguisher and electrical equipment housing before wiring work; and Figure 9, which shows the fire extinguisher and electrical equipment housing after the wiring work is completed.

[0054] As shown in Figure 7, the construction work (installation process) for the fire extinguisher and electrical equipment storage enclosure 10b involves, as a preliminary step, installing a support frame 28 at the bottom of the box-shaped section 36 in the tunnel wall 35 along the guardian's passage 38 before installing the fire extinguisher and electrical equipment storage enclosure 10b. Subsequently, the fire extinguisher and electrical equipment storage enclosure 10b is placed on the left side of the support frame 28, and the enclosure is installed by attaching and fixing the fire extinguisher and electrical equipment storage enclosure 10b on the support frame 28 by fastening bolts between the support frame 28 and the enclosure 10b.

[0055] When the fire extinguisher and electrical equipment storage enclosure 10b is installed, the side work opening 40 of the fire extinguisher and electrical equipment storage enclosure 10b is located on the side of the empty area 52 where the fire hydrant equipment storage enclosure 10a will later be installed. Workers can use the empty area 52 and the side work opening 40, in addition to the opening formed by opening the fire extinguisher door 18 and the electrical equipment door 20, to pull wiring cables from the outside into the fire extinguisher and electrical equipment storage enclosure 10b and connect them to the terminal boxes 30 and 32. This ensures sufficient workspace for wiring work, making it possible to perform wiring work to the terminal boxes 30 and 32 easily and efficiently.

[0056] As an example of wiring work for the terminal box 30, first, as shown in Figure 8, the fire extinguisher door 18 and the electrical equipment door 20 of the fire extinguisher / electrical equipment storage enclosure 10b are opened. Also, since the switch cable 82 is connected from the terminal box 32 as a wiring cable for connecting the pump start switch 76 and the pump start interlocking switch 74 provided in the fire hydrant equipment storage enclosure 10a, the switch cable 82 is pulled out from the side work opening 40 into the empty area 52.

[0057] Next, as shown in Figure 9, a high-voltage cable 78 and a low-voltage cable 80 are brought in as external wiring cables through a conduit 84 that is pulled down from the bottom of the fire extinguisher / electrical equipment housing 10b. The high-voltage cable 78 is connected to the terminal block of the terminal box 30, thereby connecting the high-voltage cable 78 to the red indicator light 22 via the terminal box 30. The low-voltage cable 80 is connected to the terminal block of the terminal box 32, thereby connecting the low-voltage cable 80 to the transmitter 24, telephone jack 25, response lamp 26, pump start switch 76, and pump start interlock switch 74 via the terminal box 32. Note that the switch cable 82 may be pulled out after the wiring work for the external wiring cables.

[0058] [d.Terminal box] Next, we will explain the terminal box. For this explanation, please refer to Figure 10, which shows the terminal box removed from the circuit. Figure 10(A) is a top view, Figure 10(B) is a front view, and Figure 10(C) is a side view. Although both terminal boxes 30 and 32 are similar, we will explain them as terminal box 30 here.

[0059] The terminal box 30 consists of a box body 300 and a lid member 302. When placed inside the fire extinguisher / electrical equipment storage enclosure 10b, its dimensions (height (top and bottom) x width (left and right) x depth (front and back)) are approximately 80mm x 220mm x 140mm. The lid member 302 is positioned to open and close freely at the opening of the box body 300 by a hinge 304, and the lid member 302 is fixed in the closed position by a knob 308. When the lock is released by operating the knob 308, the lid member 302 opens as shown by the dotted line in the lid member 3020, allowing wiring cables to be connected to the terminal block 300a, which has multiple terminals arranged inside. The lid member 302 is made of transparent resin so that the terminal block 300a inside can be seen.

[0060] Furthermore, multiple waterproof connectors 306 are provided on the top and sides of the box body 300, for example, two on the top and two on one side, ensuring the waterproofness of the wiring cables inserted into the waterproof connectors 306.

[0061] [e. Cable wiring system for fire hydrant equipment] Next, we will explain the cable wiring system for the fire hydrant system. In this explanation, please refer to Figure 11, which shows the cable wiring system for the fire hydrant system, and Figure 12, which shows the details of the wiring to the terminal box to which the low-voltage cables are connected.

[0062] As shown in Figure 11, the electrical door 20 of the fire extinguisher / electrical equipment housing 10b is equipped with electrical equipment including a red indicator light 22, a transmitter 24, a telephone jack 25, and an answer lamp 26. The red indicator light 22 is connected to the corresponding terminal on the terminal block 300a of the terminal box 30, and the transmitter 24, answer lamp 26, and telephone jack 25 are connected to the corresponding terminals on the terminal block 320a of the terminal box 32.

[0063] Furthermore, the fire hydrant equipment housing 10a is equipped with a pump start switch 76 and a pump start interlock switch 74, which are connected to the corresponding terminals on the terminal block 320a of the terminal box 32.

[0064] A high-voltage cable 78, for example, an AC100V power supply, is brought into the fire extinguisher / electrical equipment housing 10b from the outside, and the high-voltage cable 78 is connected to the corresponding terminal on the terminal block 300a of the terminal box 30, thereby connecting to the red indicator light 22.

[0065] Furthermore, a low-voltage cable 80 (a multi-core cable supplied with DC48V power from the outside, although it is a single multi-core cable, in the cable wiring system of Figure 11 it is represented as a telephone cable 80a corresponding to the telephone jack 25, a response lamp cable 80b corresponding to the response lamp 26, a transmitter cable 80c corresponding to the transmitter 24, and a switch cable 80d corresponding to the pump start switch 76 and the pump start interlock switch 74) is drawn into the fire extinguisher / electrical equipment housing 10b from the outside, and the low-voltage cable 80 is connected to the corresponding terminals on the terminal block 320a of the terminal box 32, thereby connecting to the transmitter 24, telephone jack 25, response lamp 26, pump start switch 76, and pump start interlock switch 74.

[0066] As shown in Figure 12, the pump start switch 76 and the pump start interlock switch 74 are connected to the terminals of the terminal block 320a of the terminal box 32 as a parallel circuit, with the wiring of the pump start interlock switch 74 connected to the terminals of the pump start switch 76. Furthermore, the terminals of the terminal block 320a of the terminal box 32 to which the wiring of the pump start switch 76 and the pump start interlock switch 74 are connected are connected to the terminals to which the wiring of the transmitter 24 is connected via jumper wiring, so that the wiring of the pump start switch 76 and the pump start interlock switch 74 are connected to the wiring of the transmitter 24.

[0067] [f. Variations of the present invention] Modifications of the fire hydrant system and its installation method according to the present invention will now be described. The fire hydrant system and its installation method according to the present invention include the following modifications in addition to the embodiments described above.

[0068] (Side work opening) In the above embodiment, a side work opening is formed on the side surface that forms the dividing surface of the fire extinguisher / electrical equipment storage enclosure. However, a partition plate with an openable / closable door structure or a removable partition plate may be placed on the side surface that forms the dividing surface, and the side work opening may be formed by opening or removing the partition plate. In this case, once the wiring work from the side work opening is completed, the partition plate is closed and the fire extinguisher / electrical equipment storage enclosure and the fire hydrant equipment storage enclosure are connected and fixed together.

[0069] (Location of fire hydrant installation) In the above embodiment, the case was described as being installed in a box-shaped section of the tunnel wall along a monitoring staff passage in a tunnel with a road, but the method can be applied to other installation locations as well.

[0070] (Location of entry point for external wiring cables) In the above embodiment, wiring cables are brought in from the outside by providing a conduit at the bottom of the fire extinguisher and electrical equipment housing. However, the location of the cable entry point can be any location on the fire extinguisher and electrical equipment housing, depending on the installation location and surrounding environment.

[0071] (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]

[0072] 10: Fire hydrant system 10a: Fire hydrant equipment housing 10b: Fire extinguisher and electrical equipment storage enclosure 11a, 11b: Decorative frame 12: Fire hydrant door 1210: Door handle 14: Maintenance Door 16: Fire hydrant storage area 1610: Valve storage compartment 1620: Hose storage compartment 18: Fire extinguisher door 1810: Door handle 1820: Peephole 19: Fire extinguisher storage compartment 20: Electric Door 22: Red indicator light 24: Transmitter 25: Phone hijacking 26: Response lamp 28: Stand 30,32:Terminal box 34: Fire extinguisher 35: Tunnel wall 36: Box removal section 38: Guard passage 40: Side work opening 42,48:Connection surface 44, 50: Through-hole 52: Free space 55: Water supply piping 56: Water tap 57: Fire hydrant valve 58: Automatic pressure regulating valve 60: Fire hydrant valve opening / closing lever 61: Control Box 62: Fire hose 64: Nozzle 65: Nozzle holder 66: Hose storage frame 67: Interlocking Box 68: Hose Guide 70: Cable rack 72: Cable access point 74: Pump start-up linked switch 76: Pump start switch 78: High-voltage cables 80: Low-voltage cables 82: Switch Cable 84:Conduit

Claims

1. A fire hydrant system in which electrical circuits are laid inside and fire hydrant equipment is installed, The housing of the fire hydrant device is A first housing is provided, which includes a circuit connection section for connecting the aforementioned circuits, including an external circuit drawn in from the outside, A second housing is connected to the first housing in the installed state, and the fire hydrant equipment is arranged inside it, A partition plate with a door structure that can be opened and closed is positioned on the side of the first or second housing, Composed of, The first enclosure is, On the side of the housing to which the second housing is connected in the installed state, there is a side work opening formed by opening the partition plate, which can be used when wiring work is performed to connect the external electrical circuit to the electrical circuit connection part, A connecting structure that connects and fixes the second housing in a position that closes the side work opening when the second housing is installed, A fire hydrant device characterized by being equipped with the following features.

2. A fire hydrant system in which electrical circuits are laid inside and fire hydrant equipment is installed, The housing of the fire hydrant device is A first housing is provided, which includes a circuit connection section for connecting the aforementioned circuits, including an external circuit drawn in from the outside, A second housing is connected to the first housing in the installed state, and the fire hydrant equipment is arranged inside it, A removable partition plate is provided on the side of the first or second housing, Equipped with, The first enclosure is, On the side of the housing to which the second housing is connected in the installed state, there is a side work opening formed by removing the partition plate, which can be used when wiring work is performed to connect the external electrical circuit to the electrical circuit connection part, A connecting structure that connects and fixes the second housing in a position that closes the side work opening when the second housing is installed, A fire hydrant device characterized by being equipped with the following features.

3. A fire hydrant device according to claim 1 or 2, The fire hydrant device is characterized in that the side work opening is closed with the partition plate when the wiring work is completed.

4. A method for constructing a fire hydrant system in which electrical circuits are laid inside and fire hydrant equipment is housed, The housing of the fire hydrant device is A first housing is provided, which includes a circuit connection section for connecting the aforementioned circuits, including an external circuit drawn in from the outside, A second housing is connected to the first housing in the installed state, and the fire hydrant equipment is arranged inside it, A partition plate having an openable and closable structure is provided on the side of the first or second housing, Composed of, The installation of the aforementioned fire hydrant system is The first enclosure is installed in a predetermined location, With the first housing installed at the aforementioned installation location, the wiring work to connect the external electrical circuit to the electrical circuit connection section is performed using the side work opening formed on the side of the housing to which the second housing will be connected in a subsequent process, and which is formed by opening the partition plate, and the empty area where the second housing will be placed. A method for installing a fire hydrant system, characterized in that, after the wiring work, the second housing is connected and fixed to a position that closes the side work opening of the first housing, thereby installing the second housing.

5. A method for constructing a fire hydrant system in which electrical circuits are laid inside and fire hydrant equipment is housed, The housing of the fire hydrant device is A first housing is provided, which includes a circuit connection section for connecting the aforementioned circuits, including an external circuit drawn in from the outside, A second housing is connected to the first housing in the installed state, and the fire hydrant equipment is arranged inside it, A removable partition plate is provided on the side of the first or second housing, Composed of, The installation of the aforementioned fire hydrant system is The first enclosure is installed in a predetermined location, With the first housing installed at the aforementioned installation location, the wiring work to connect the external electrical circuit to the electrical circuit connection section is performed using the side work opening formed on the side of the housing to which the second housing will be connected in a subsequent process, and which is formed by removing the partition plate, and the empty area where the second housing will be placed. A method for installing a fire hydrant system, characterized in that, after the wiring work, the second housing is connected and fixed to a position that closes the side work opening of the first housing, thereby installing the second housing.

6. A method for installing a fire hydrant system according to claim 4 or 5, A method for installing a fire hydrant system, characterized in that, when the wiring work is completed, the side work opening is closed with the partition plate.

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