Water spray flow rate measuring device and water spray flow rate measuring system

Abstract

A water spray flow rate measuring device that can easily and accurately measure the flow rate of water discharged from a water spray nozzle. [Solution] The water spray flow rate measuring device 1 has two air bubble separation tanks 3F and a water storage tank 4 formed within the tank body 2. The upstream side is connected to the water spray nozzle via a water collection hose 58, while the downstream side has water collection pipes 5FL and 5FR connected to the air bubble separation tanks 3F and 3B. The water collection pipe 5FL, to which the water collection hose 58 is connected, is connected to a branch pipe via a branch hose 11F connected to a branch section 10FL, and the downstream side of the branch pipe is connected to the water storage tank 4. A flow meter 9F is installed in the main water pipe 8F, which conducts water from the air bubble separation tanks 3F and 3B to the water storage tank 4. The air bubble separation tank 3F is connected to an air vent pipe, which discharges air from inside. A control panel 50 controls the branch path valve, which opens and closes the branch pipe, and the air vent valve, which opens and closes the air vent pipe, based on the measurement value of the flow meter 9F. The steady-state measurement value of the flow meter 9F is recorded as the water spray flow rate from the water spray nozzle.

Description

[Technical Field]

[0001] The present invention relates to a water spray flow rate measuring device and a water spray flow rate measuring system used for inspecting water spray equipment installed in tunnels. [Background technology]

[0002] Tunnels such as those on expressways are equipped with water spray systems to extinguish fires and prevent their spread in the event of a fire. The water spray systems include water spray nozzles installed on the tunnel walls at predetermined intervals along the tunnel axis, water distribution pipes that supply water to the water spray nozzles, a pump that pressure-feeds water to the water distribution pipes, and a pump control device that activates the pump in response to a fire. When a fire breaks out in the tunnel, a fire sensor detects the fire and the pump control device activates the pump, pressure-feeding water to the water distribution pipes. The water pressured through the water distribution pipes is ejected from the water spray nozzles in the form of a mist, filling the tunnel with the mist. This creates a cooling effect due to the evaporation of the water and an oxygen-deprivation effect due to the water droplets filling the tunnel, thereby suppressing the fire and protecting the tunnel.

[0003] Water spray equipment is required to undergo periodic inspections, during which water is actually sprayed using the water spray nozzle to check whether the nozzle is operating normally. A water spray flow rate measuring device is used to measure the water spray flow rate from the water spray nozzle. One conventional water spray flow rate measuring device proposed is one that is mounted on a work vehicle and includes a container that collects water from the water spray nozzle, a water conduit that guides the water collected in the container, and a gas-liquid separation tank that separates air from the water guided in the water conduit (see Patent Document 1).

[0004] The conventional water spray flow rate measuring device has a switching valve in the water conduit, which allows the supply destination of the water collected in the container to be switched between the gas-liquid separation tank and a relief pipe. A drain pipe is connected to the gas-liquid separation tank to discharge the water from which the air has been separated, and a flow meter is installed in this drain pipe to measure the water flow rate. The work vehicle has a base that is raised and lowered by a lifter, and the container is supported by an arm attached to the base, and the gas-liquid separation tank is installed on the base.

[0005] This water spray flow rate measuring device operates as follows. First, a container is attached to the water spray nozzle, and the switching valve is switched to the relief pipe side. The water spray nozzle begins spraying water. Once the water spray flow rate from the water spray nozzle stabilizes, the operator switches the switching valve to introduce the water collected in the container into the gas-liquid separation tank. One minute after the start of water introduction into the gas-liquid separation tank, the operator switches the switching valve to stop the introduction of water into the gas-liquid separation tank. During this time, the flow rate of water discharged from the gas-liquid separation tank through the drain pipe is measured with a flow meter. If the measured value is lower than the specified value, it is determined that there is an abnormality, such as a clog, in the water spray nozzle. While the detailed description of the invention in Patent Document 1 does not describe how the water discharged from the relief pipe or drain pipe is treated, the drawings show the end of the drain pipe located near the shoulder of a road inside a tunnel, suggesting that the water from the drain pipe is discharged onto the shoulder. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 11-319140 Summary of the Invention [Problem to be solved by the invention]

[0007] However, with the above-mentioned conventional water spray flow rate measuring device, an operator must observe the operating status of the water spray nozzle from the start of water spraying and switch the switching valve once they determine that the water spray flow rate has stabilized. This requires skill and effort to operate the water spray flow rate measuring device. Furthermore, because the timing to start measuring the water spray flow rate from the water spray nozzle is determined based on the operator's judgment, the water spray flow rate measurement results vary, making it difficult to accurately measure the spray flow rate. Furthermore, the operator must measure the elapsed time after switching the switching valve from the relief pipe side to the gas-liquid separation tank side, and after one minute has elapsed, they must switch the switching valve from the gas-liquid separation tank side to the relief pipe side, which further increases the operational effort.

[0008] Furthermore, with the conventional water spray flow rate measuring device, when water is discharged from the drain pipe onto the shoulder of a road, if there is no drainage ditch on the shoulder or if the road has a one-sided slope, the discharged water will flow into the driving lanes of the road. If traffic restrictions are imposed on some lanes to allow for inspection of the water spray nozzles while other lanes are open, the discharged water may have adverse effects on vehicles traveling on the open lanes, such as causing dirt or hydroplaning.

[0009] Therefore, an object of the present invention is to provide a water spray flow rate measuring device that can measure the flow rate of water discharged from a water spray nozzle relatively easily and accurately with relatively little effort and no skill required, and also to provide a water spray flow rate measuring device that can prevent drainage of wastewater onto roads. [Means for solving the problem]

[0010] In order to solve the above problems, the water spray flow rate measuring device of the present invention is A water spray flow rate measuring device for measuring the water spray flow rate of a water spray nozzle installed in a tunnel, a water collection pipe connected to the water spray nozzle; a bubble separation tank connected to the downstream side of the water collection pipe for separating bubbles contained in the water introduced through the water collection pipe; A water tank and a main water pipe that guides the water from the air bubble separation tank to the water storage tank; a flow meter for measuring the flow rate of water flowing through the main water pipe; a branch path branching from the water collection pipe and connecting to the water storage tank; a branch path valve that opens and closes the branch path; an air vent pipe connected to the air bubble separation tank and discharging air from the air bubble separation tank; an air vent valve that opens and closes the air vent pipe; a control device that opens the branch path valve and the air vent valve before the start of water spraying by the water spray nozzle, checks the measurement value of the flow meter after the start of water spraying by the water spray nozzle, closes the branch path valve and the air vent valve when the measurement value of the flow meter exceeds a predetermined reference value, and records the measurement value of the steady state as the water spray flow rate of the water spray nozzle when it is detected that the measurement value of the flow meter has reached a steady state after the branch path valve and the air vent valve are closed; It is characterized by having:

[0011] According to the above configuration, before the water spray nozzle starts spraying water, the control device opens the branch path valve and the air vent valve. When the water spray nozzle starts spraying water in this state, air present between the water spray nozzle and the water collection pipe is released mainly through the branch path. At the same time, water released from the water spray nozzle is mainly guided from the water collection pipe to the bubble separation tank. The water guided to this bubble separation tank is stored in the bubble separation tank, and the air in the bubble separation tank is discharged through the air vent pipe. The water in the bubble separation tank is guided to the water storage tank through the main water pipe, and the water flow rate of this main water pipe is measured by a flow meter. When the flow meter measurement value exceeds a predetermined reference value, the control device closes the branch path valve and the air vent valve. As a result, all of the water released from the water spray nozzle is guided to the bubble separation tank through the water collection pipe. After this, when the control device detects that the flow meter measurement value has reached a steady state, it records this steady-state measurement value as the water spray flow rate of the water spray nozzle. By controlling the branch path valve and the air vent valve based on the flow meter measurement value, air between the water spray nozzle and the water spray flow rate measuring device and air within the water spray flow rate measuring device can be quickly removed, and a stable flow rate can be quickly and effectively detected due to the removal of the air. This allows the flow rate of water emitted from the water spray nozzle to be recorded more quickly and with greater accuracy than before, without requiring the operator's expertise. Furthermore, since the water emitted from the water spray nozzle is guided to the water tank through the main water pipe and the branch path, the inconvenience of wastewater spilling onto the road, as in the past, can be prevented. Furthermore, by controlling the above-mentioned control device, air present between the water spray nozzle and the water collection pipe can be quickly removed, allowing the water flow rate in the main water pipe to stabilize quickly from the start of water spraying. As a result, the amount of water used for inspecting the water spray nozzle can be effectively reduced.

[0012] The water spray flow rate measuring device of one embodiment is formed in a generally rectangular parallelepiped shape and includes a tank body in which two of the air bubble separation tanks and one of the water tanks are integrally formed, The air bubble separating tanks are disposed at both longitudinal ends of the tank body, The water storage tank is formed in a portion of the tank body other than the two air bubble separation tanks, The water collection pipe, the main water pipe, the flow meter, the branch path, the branch path valve, the air vent pipe, and the air vent valve are provided corresponding to each of the two air bubble separation tanks.

[0013] According to the above embodiment, a tank body formed in a roughly rectangular parallelepiped shape is provided with air bubble separation tanks arranged at both longitudinal ends of the tank body, and a water storage tank formed in a portion of the tank body other than the two air bubble separation tanks. A water collection pipe, a main water pipe, a flow meter, a branch path, a branch path valve, an air vent pipe, and an air vent valve are provided corresponding to each of the two air bubble separation tanks. This allows for a compact water spray flow rate measuring device capable of measuring the flow rate of two water spray nozzles.

[0014] In one embodiment of the water spray flow rate measuring device, the water collection pipe is provided on both sides of the tank body in the width direction.

[0015] According to the above embodiment, since water collection pipes are provided on both sides of the tank body in the width direction, the water spray nozzles located on either side of the water spray flow rate measuring device in the width direction can be connected to the water collection pipes for inspection. Furthermore, regardless of which side of the spray flow rate measuring device is positioned longitudinally relative to the axial direction of the tunnel, the water spray nozzles can be connected to the water collection pipe closest to the water spray nozzles for inspection.

[0016] In one embodiment, the water spray flow rate measuring device is provided with a drain pipe for draining water from the water tank and a drain valve for opening and closing the drain pipe at the bottom on both sides of the width of the tank body.

[0017] According to the above embodiment, drain pipes and drain valves for discharging water from the water tank are provided on both sides of the tank body in the width direction. Therefore, water can be discharged from the water tank through the drain pipes into the drain ditch located on either side of the water spray flow rate measuring device in the width direction. Furthermore, regardless of whether the water spray flow rate measuring device is positioned facing either longitudinal side relative to the axial direction of the tunnel, water can be discharged from the water tank into the drain ditch through the drain pipe closest to the drain ditch. Water can be discharged from the drain pipe to the drain ditch via, for example, a drain hose. Furthermore, because the drain pipe and drain valve are provided at the bottom of the tank body, an operator on the road can easily attach and detach the drain hose to the drain pipe and operate the drain valve while the water spray flow rate measuring device is mounted on a transport vehicle.

[0018] In one embodiment of the water spray flow rate measuring device, the control device opens the branch path valve when the water spray nozzle finishes spraying water.

[0019] According to the above embodiment, when the water spray nozzle finishes spraying water, the control device controls the branch path valve to open. This allows the water between the water spray nozzle and the water collection pipe to be discharged into the water tank through the branch path. Therefore, when the water collection hose connected to the water spray nozzle is removed after inspection of the water spray nozzle, the problem of water remaining between the water spray nozzle and the water collection pipe leaking out of the water collection hose can be effectively prevented.

[0020] The water spray flow rate measuring device of one embodiment includes a light irradiation device that irradiates light for positioning the water spray nozzle.

[0021] According to the above embodiment, the light irradiation device can be used to irradiate the water spray nozzle or the wall of a tunnel, etc. with light to position the water spray flow measuring device relative to the water spray nozzle, thereby making it easy to position the water spray flow measuring device in the appropriate position relative to the water spray nozzle.

[0022] In one embodiment, the water spray flow rate measuring device is provided with a filter that is installed downstream of the main water pipe and that collects foreign matter from the water guided by the main water pipe.

[0023] According to the above embodiment, a filter installed downstream of the main water pipe collects foreign matter from the water guided by this main water pipe. By analyzing the foreign matter collected by this filter, it is possible to detect deterioration of the water spray nozzle and the equipment that supplies water to this water spray nozzle.

[0024] In one embodiment, the control device includes a wireless communication unit that transmits device-related information about the water spray flow rate measuring device.

[0025] According to the above embodiment, the wireless communication unit of the control device transmits device-related information about the water spray flow rate measuring device. By receiving this device-related information, it is possible to acquire and check the device-related information about the water spray flow rate measuring device at a location remote from the water spray flow rate measuring device.

[0026] In one embodiment of the water spray flow measuring device, the device-related information is at least one of information indicating the measurement value of the flow meter, information identifying the water spray nozzle from which the measurement value was obtained, information indicating the amount of water stored in the water tank, and information indicating the operating status of the water spray flow measuring device.

[0027] According to the above embodiment, at a location away from the water spray flow rate measuring device, at least one of information indicating the measurement value of the flow meter of the water spray flow rate measuring device, information identifying the water spray nozzle from which the measurement value was obtained, information indicating the amount of water stored in the water tank, and information indicating the operating status of the water spray flow rate measuring device can be obtained and confirmed.

[0028] In one embodiment, the water spray flow rate measuring device includes a wireless communication unit of the control device that receives operation command information that commands an operation of the water spray flow rate measuring device, The control device controls the operation of the water spray flow rate measuring device in accordance with the received operation command information.

[0029] According to the above embodiment, the wireless communication unit of the control device receives operation command information instructing the operation of the water spray flow rate measuring device, and the control device controls the water spray flow rate measuring device in accordance with the operation command information. The water spray flow rate measuring device can be remotely controlled by transmitting the operation command information from a location remote from the water spray flow rate measuring device. Here, the operation command information includes information that directly commands the operation of the water spray flow rate measuring device, as well as information indicating parameters related to control performed by the control device when controlling the operation of the water spray flow rate measuring device. Examples of information that directly commands the operation of the water spray flow rate measuring device include information instructing the closing or opening of a valve included in the water spray flow rate measuring device. Furthermore, examples of information indicating parameters related to control performed by the control device when opening or closing a valve based on the flow rate in a pipeline included in the water spray flow rate measuring device include information indicating the flow rate value at which the valve is closed or opened.

[0030] The water spray flow rate measuring system of the present invention comprises a plurality of the water spray flow rate measuring devices described above, The apparatus is characterized by comprising a central information device having a wireless communication unit that receives the device-related information transmitted from the wireless communication units of the plurality of water spray flow rate measuring devices.

[0031] According to the above configuration, the central information device can collect device-related information about the plurality of water spray flow rate measuring devices at a location remote from the plurality of water spray flow rate measuring devices.

[0032] The water spray flow rate measuring system of the present invention comprises a plurality of the water spray flow rate measuring devices described above, It is characterized by having a central information device having a wireless communication unit that receives the device-related information transmitted from the wireless communication units of the multiple water spray flow measuring devices and transmits operation command information that commands the operation of the multiple water spray flow measuring devices.

[0033] According to the above configuration, a central information device can collect device-related information of the multiple water spray flow rate measuring devices at a location away from the multiple water spray flow rate measuring devices and remotely operate the multiple water spray flow rate measuring devices.

[0034] In one embodiment of the water spray flow rate measuring system, a wireless communication unit of one of the multiple water spray flow rate measuring devices receives device-related information from a wireless communication unit of another water spray flow rate measuring device, and transmits the received device-related information of the other water spray flow rate measuring device and the device-related information of the water spray flow rate measuring device to the central information device.

[0035] According to the above embodiment, the wireless communication unit of one of the multiple water spray flow rate measuring devices relays device-related information of the other water spray flow rate measuring devices and transmits it to the central information device, thereby ensuring that the device-related information of the multiple water spray flow rate measuring devices is delivered to the central information device.

[0036] In one embodiment of the water spray flow rate measuring system, the wireless communication unit of one of the plurality of water spray flow rate measuring devices receives operation command information for at least one of the plurality of water spray flow rate measuring devices from the central information device, and if the received operation command information is for another water spray flow rate measuring device, transmits the operation command information to the other water spray flow rate measuring device.

[0037] According to the above embodiment, the wireless communication unit of one of the multiple water spray flow rate measuring devices relays operation command information for other water spray flow rate measuring devices and transmits it to the water spray flow rate measuring device, thereby ensuring that the operation command information transmitted from the central information device is delivered to the target water spray flow rate measuring device. [Brief explanation of the drawings]

[0038] [Figure 1] 1 is a front view showing a water spray flow rate measuring device according to an embodiment of the present invention. [Figure 2]FIG. 2 is a rear view showing the water spray flow rate measuring device. [Figure 3] FIG. 2 is a left side view showing the water spray flow rate measuring device. [Figure 4] FIG. 2 is a plan view showing the water spray flow rate measuring device. [Figure 5] FIG. 2 is a block diagram showing a control panel and an operation panel provided in the water spray flow rate measuring device. [Figure 6] 10 is a diagram showing the change in the operation state of the branch path valve and the air vent valve and the water flow rate of the main water pipe. FIG. [Figure 7] This is a right side view showing a schematic diagram of inspection of tunnel water spray equipment using multiple water spray flow rate measuring devices. [Figure 8] FIG. 10 is a rear view schematically showing one water spray flow rate measuring device during inspection of the water spray equipment. [Figure 9] FIG. 10 is a perspective view showing a state in which a water collecting jig is attached to a water spray nozzle. [Figure 10] 1 is a schematic diagram showing information communication between a central information device and a plurality of water spray flow rate measuring devices. FIG. [Figure 11] FIG. 2 is a block diagram showing a central information device. [Figure 12] FIG. 10 is a diagram showing an image displayed on the central information device. DETAILED DESCRIPTION OF THE INVENTION

[0039] The present invention will be described in detail below with reference to the illustrated embodiments.

[0040] Fig. 1 is a front view showing a water spray flow rate measuring device according to an embodiment of the present invention, Fig. 2 is a rear view of the water spray flow rate measuring device, Fig. 3 is a left side view of the water spray flow rate measuring device, and Fig. 4 is a plan view of the water spray flow rate measuring device. The water spray flow rate measuring device 1 of this embodiment is used to inspect water spray equipment installed in tunnels, and more specifically, is used to measure the water spray flow rate from water spray nozzles installed on the walls of tunnels, etc. This water spray flow rate measuring device 1 is placed on the bed of a medium-sized truck, transported into the tunnel, and used while mounted on the truck.

[0041] In the water spray flow rate measuring device 1 of this embodiment, the driver's seat side of the truck when placed on the truck is referred to as the front, the rear end of the truck bed as the rear, the left side in the direction of travel of the truck as the left, and the right side in the direction of travel of the truck as the right. Furthermore, parts having substantially the same functions are indicated by the same reference numerals, with the following English letters added: F for those located in the front, B for those located in the rear, L for those located on the left, R for those located on the right, FL for those located in the front left, FR for those located in the front right, BL for those located in the rear left, and BR for those located in the rear right.

[0042] This water spray flow rate measuring device 1 includes a tank body 2 having a rectangular parallelepiped shape elongated in the front-to-rear direction, and two air bubble separation tanks 3F, 3B and a water storage tank 4 for storing water from the air bubble separation tanks 3F, 3B, which are integrally formed within the tank body 2. The two air bubble separation tanks 3F, 3B are installed at both longitudinal ends of the tank body 2, i.e., at both the front and rear ends. The air bubble separation tanks 3F, 3B are roughly square in plan view and have a rectangular parallelepiped shape elongated in the vertical direction. They are formed in the center of the front and back width directions, extending across the entire height of the tank body 2 and narrower than the overall width. The water storage tank 4 is formed in a portion of the tank body 2 other than the two air bubble separation tanks 3F, 3B. Circular observation windows 45F, 45B are provided on the front and back of the tank body 2 for observing the interior of the air bubble separation tanks 3F, 3B. The observation windows 45F, 45B are made of reinforced plastic such as acrylic or reinforced glass.

[0043] On the top surface of the tank body 2, water collection pipes 5FL, 5FR, 5BL, and 5BR, connected to the water spray nozzles, are provided on the left and right sides of the front end and the rear end. The upstream ends of these water collection pipes 5FL, 5FR, 5BL, and 5BR are connected to water collection hoses 58 connected to the water spray nozzles. The downstream ends of the water collection pipes 5FL, 5FR, 5BL, and 5BR are connected to the front bubble separation tank 3F and the rear bubble separation tank 3B, respectively. The downstream ends of these water collection pipes 5FL, 5FR, 5BL, and 5BR are connected to the top of the bubble separation tanks 3F and 3B. Branches 10FL, 10FR, 10BL, and 10BR are provided downstream of the upstream ends of the water collection pipes 5FL, 5FR, 5BL, and 5BR, which guide at least a portion of the water and air from the water spray nozzles. Downstream of the branching points 10FL, 10FR, 10BL, 10BR of the water collection pipes 5FL, 5FR, 5BL, 5BR, manual on-off valves 6FL, 6FR, 6BL, 6BR are provided to open and close the connections between the water collection pipes 5FL, 5FR, 5BL, 5BR and the air bubble separation tanks 3F, 3B. Of the water collection pipes 5FL, 5FR, 5BL, 5BR located on the left or right side of the water spray flow rate measuring device 1, the one closest to the water spray nozzle is connected to the water spray nozzle. Furthermore, the water collection pipes 5FL, 5FR, 5BL, 5BR on the front and rear sides of the water spray flow rate measuring device 1 are connected to two water spray nozzles adjacent to each other in the tunnel axis direction.

[0044] Four hose supports 38FL, 38FR, 38BL, and 38BR are installed on the front, rear, left, and right ends of the top surface of the tank body 2 to support water collection hoses 58 connected to the water collection pipes 5FL, 5FR, 5BL, and 5BR. These hose supports 38FL, 38FR, 38BL, and 38BR have a vertical member erected on the top surface of the tank body 2 and a rotating member connected to the upper end of the vertical member by a hinge. The rotating member is formed to be rotatable around the upper end of the vertical member and is fixed in a horizontal use position to support the water collection hose 58. When the hose supports 38FL, 38FR, 38BL, and 38BR are not in use, the rotating member is rotated vertically and fixed in a storage position.

[0045] The air bubble separation tanks 3F, 3B are provided with main water pipes 8F, 8B that guide the water from the air bubble separation tanks 3F, 3B to the water storage tank 4. The upstream ends of the main water pipes 8F, 8B open facing the bottom of the air bubble separation tanks 3F, 3B, extend vertically upward from the upstream ends downstream within the air bubble separation tanks 3F, 3B, penetrate the top surface of the tank body 2 to the outside, and bend toward the center in the front-to-rear direction. Downstream of this bend, the front main water pipe 8F extends horizontally toward the rear, while the rear main water pipe 8B extends horizontally toward the front. The downstream ends of each main water pipe 8F, 8B are bent in a hook shape, and the downstream ends open toward the water storage openings 25F, 25B formed in the top surface of the tank body 2. The water storage openings 25F, 25B communicate with the water storage tank 4, and water discharged from the openings at the downstream ends of the main water pipes 8F, 8B is introduced into the water storage tank 4 through the water storage openings 25F, 25B. Flow meters 9F, 9B are installed along the main water pipes 8F, 8B to measure the flow rate of water passing through the main water pipes 8F, 8B. These flow meters 9F, 9B may be electromagnetic flow meters, ultrasonic flow meters, or the like. Measurement data from the flow meters 9F, 9B is sent to a control panel 50, which will be described later.

[0046] Of the branch sections 10FL, 10FR, 10BL, and 10BR of the water collection pipes 5FL, 5FR, 5BL, and 5BR, the left and right branch sections 10FL, 10FR, 10BL, and 10BR connected to the water spray nozzles are connected to branch pipes 12F and 12B by branch hoses 11F and 11B. The branch pipes 12F and 12B are arranged on the top surface of the tank body 2, and the front branch pipe 12F connected to the front branch sections 10FL and 10FR is arranged on the right side and front side of the tank body 2. On the other hand, the rear branch pipe 12B connected to the rear branch sections 10BL and 10BR is arranged on the left side and rear side of the tank body 2. The upstream ends of these branch pipes 12F, 12B, which are connected to the branch hoses 11F, 11B, are located above the bubble separation tanks 3F, 3B. From the upstream ends toward the downstream side, the branch pipes have widthwise portions extending outward in the width direction of the tank body 2 and longitudinal portions extending in the longitudinal direction of the tank body 2. The longitudinal portions of the branch pipes 12F, 12B are such that the front branch pipe 12F extends rearward, while the rear branch pipe 12B extends forward. The downstream ends of these branch pipes 12F, 12B bend downward and open toward branch openings 30F, 30B formed on the top surface of the tank body 2. The branch openings 30F, 30B communicate with the water tank 4, and water discharged from the openings at the downstream ends of the branch pipes 12F, 12B is introduced into the water tank 4 through the branch openings 30F, 30B. Furthermore, air discharged from the openings at the downstream ends of the branch pipes 12F, 12B is released into the atmosphere. Branch path valves 13F, 13B are installed midway along the branch pipes 12F, 12B to open and close the branch pipes 12F, 12B. The branch path valves 13F, 13B are formed as motorized valves whose opening and closing is controlled by a control panel 50 (described later). Manual opening and closing valves 15 are installed upstream of the branch path valves 13F, 13B of the branch pipes 12F, 12B. Bypass pipes 14F, 14B are installed in the branch pipes 12F, 12B to bypass the branch path valves 13F, 13B in the event of a failure of the branch path valves 13F, 13B, and manual opening and closing valves 15 are installed on the bypass pipes 14F, 14B. Branch paths extending from the water collection pipes 5FL, 5FR, 5BL, 5BR to the water tank 4 are formed by the branch portions 10FL, 10FR, 10BL, 10BR, the branch hoses 11F, 11B, and the branch pipes 12F, 12B.

[0047] Air vent pipes 20F, 20B are connected to the air bubble separation tanks 3F, 3B to discharge air from the tanks. The upstream ends of the air vent pipes 20F, 20B penetrate the air bubble separation tanks 3F, 3B on the top surface of the tank body 2, connecting to the tanks 3F, 3B. The air vent pipes 20F, 20B extend from upstream to downstream on the top surface of the tank body 2, outward in the width direction. The downstream ends of the air vent pipes 20F, 20B bend downward and open toward air vent openings 31F, 31B formed on the top surface of the tank body 2. The air vent openings 31F, 31B connect to the water tank 4. Air introduced from the bubble separation tanks 3F, 3B through the air vent pipes 20F, 20B is released into the atmosphere from the openings at the downstream ends, and water mixed in the air vent pipes 20F, 20B is introduced into the water tank 4 from the air vent openings 31F, 31B. Air vent valves 21F, 21B that open and close the air vent pipes 20F, 20B are installed midway along the air vent pipes 20F, 20B. The air vent valves 21F, 21B are formed as motor-operated valves whose opening and closing is controlled by a control panel 50, which will be described later. A manual opening and closing valve 23 is installed upstream of the air vent valves 21F, 21B of the air vent pipes 20F, 20B. The air vent pipes 20F, 20B are provided with bypass pipes 22F, 22B that bypass the air vent valves 21F, 21B in the event of a malfunction of the air vent valves 21F, 21B, and manual opening and closing valves 23 are provided on the bypass pipes 22F, 22B.

[0048] Within the tank body 2, filters 26F, 26B are installed below the water storage openings 25F, 25B to collect foreign matter contained in the water guided through the main water pipes 8F, 8B. These filters 26F, 26B are box-shaped with an open top, and stainless steel mesh with a mesh size of approximately 1 mm is attached to the sides and bottom. Inspection hatches 27F, 27B are formed on the top surface of the tank body 2 and on the outer side of the water storage openings 25F, 25B in the width direction. These inspection hatches 27F, 27B allow the filters 26F, 26B to be attached and detached below the water storage openings 25F, 25B. The filters 26F, 26B filter the water guided through the main water pipes 8F, 8B and collect foreign matter contained in the water. By analyzing this foreign matter, it is possible to detect deterioration of the water spray nozzle, the pumps and piping of the equipment that supplies water to the water spray nozzle, and deterioration of the waterproof coating of the water tank that stores the water to be supplied to the water spray nozzle.

[0049] In the water spray flow rate measuring device 1 of this embodiment, two sets of the water collection pipes 5FL, 5FR, 5BL, 5BR, the main water pipes 8F, 8B, the flow meters 9F, 9B, the branch paths, the branch path valves 13F, 13B, the air vent pipes 20F, 20B, and the air vent valves 21F, 21B are installed corresponding to each of the two air bubble separation tanks 3F, 3B. This makes it possible to measure the water spray flow rate of two water spray nozzles adjacent to each other in the tunnel axial direction using one water spray flow rate measuring device 1.

[0050] Furthermore, this water spray flow rate measuring device 1 is provided with an ultrasonic water level gauge 43 on the top surface of the tank body 2, which measures the water level of the water storage tank 4. Also, a magnetic float water level gauge 44 is installed on the back surface of the tank body 2. The measurement data of the ultrasonic water level gauge 43 is sent to a control panel 50, which will be described later, and the measurement value of the magnetic float water level gauge 44 is recognized visually by the operator.

[0051] The water spray flow rate measuring device 1 also includes two drain pipes 33L, 33R at the bottom of both widthwise sides of the tank body 2 for discharging water from the water storage tank 4. These drain pipes 33R, 33L are equipped with manual drain valves 34L, 34R. A drain hose can be connected to the drain pipe 33R, 33L closest to the road drainage ditch to drain water into the ditch. That is, by selecting the drain pipe 33R, 33L to which the drain hose is connected, water can be drained into the ditch located on either the right or left side of the water spray flow rate measuring device 1. Furthermore, because the drain pipes 33L, 33R and drain valves 34L, 34R are provided at the bottom of the tank body 2, an operator on the road can easily attach and detach the drain hose to and from the drain pipes 33L, 33R and operate the drain valves 34L, 34R while the water spray flow rate measuring device 1 is mounted on a transport vehicle.

[0052] The water spray flow rate measuring device 1 also includes a laser marker 42 as a light-emitting device for positioning the device relative to the water spray nozzle. The laser marker 42 is attached to the tip of an arm extending forward from the center of the width of the top surface of the front portion of the tank body 2. When positioning the water spray flow rate measuring device 1 relative to the water spray nozzle to be inspected, the laser marker 42 emits a laser beam toward the tunnel wall, and the position of the water spray flow rate measuring device 1 is adjusted so that the laser beam irradiation position is aligned with the water spray nozzle. This allows the water spray flow rate measuring device 1 to be positioned appropriately between two adjacent water spray nozzles. When not positioning the water spray flow rate measuring device 1, the arm of the laser marker 42 can be folded and placed in a predetermined position near the front or top of the tank body 2 to avoid interfering with measurement and transportation operations. The laser marker 42 may be placed in other locations, such as the side, top, or back of the tank body 2.

[0053] The water spray flow rate measuring device 1 also includes a lighting device that emits light for work. Although not shown, the lighting device can be placed on the top or side of the tank body 2. This lighting device can increase the reliability and safety of work by emitting light to the work area around the water spray flow rate measuring device 1, the water spray nozzle, the tunnel wall, etc. Here, the lighting device may be installed in another position corresponding to the position to be illuminated.

[0054] The water spray flow rate measuring device 1 also includes signal indicators 40L and 40R that display the operating status of the water spray flow rate measuring device 1. The signal indicators 40L and 40R are located at the top of the side of the tank body 2 and in the longitudinal center. They illuminate three colors depending on the operating status of the water spray flow rate measuring device 1. The signal indicators 40L and 40R illuminate colors corresponding to inputs to a control panel 41 installed at the bottom of the rear of the tank body 2. Inputs to the control panel 41 are made by the operator operating the water spray flow rate measuring device 1 to determine the operating status of the water spray flow rate measuring device 1. Specifically, a green light is illuminated when the water spray nozzle is ready to receive water spray, a yellow light is illuminated when the water spray flow rate measurement is being performed without any problems, and a red light is illuminated when some kind of abnormality occurs in the water spray flow rate measuring device 1. In this way, the operating status of the water spray flow rate measuring device 1 can be notified to people located far from the water spray flow rate measuring device 1 by the color of the light illuminated by the signal indicators 40L and 40R. Here, the signal indicators 40L and 40R may emit light in colors other than the three colors, and the information notified by the lighted colors may be other information.

[0055] The water spray flow rate measuring device 1 also includes handrails / steps 47L, 47R on both the left and right sides of the tank body 2. The handrails / steps 47L, 47R are located approximately in the center of the height of the tank body 2 and are formed of a main body made of a horizontally extending pipe material and fixing brackets that support the main body and secure it to the side of the tank body 2. The handrails / steps 47L, 47R may be installed on the front, back, or top surface of the tank body 2 in addition to the left and right sides.

[0056] In addition, this water spray flow rate measuring device 1 has four wheels 48, 48, 48, 48 that can be attached to the front, rear, left, and right ends of the bottom of the tank body 2. These wheels 48, 48, 48, 48 are detachable and are attached when the device is unloaded from the truck bed, facilitating transportation in warehouses and the like. In addition, jacks 49, 49, 49, 49 can be attached to the bottom of the tank body 2, longitudinally inward of the wheels 48, 48, 48, 48 on both sides. These jacks 49, 49, 49, 49 are detachable and are used when the device is stored in a warehouse or the like, removing the load on the wheels 48, 48, 48, 48 to prevent deterioration of the wheels 48, 48, 48, 48. The wheels 48 and jack 49 are removed when the water spray flow rate measuring device 1 is placed on the truck bed.

[0057] 5 is a block diagram showing a control panel 50 and an operation panel 41 provided in the water spray flow rate measuring device 1 of this embodiment. The control panel 50 controls each device provided in the water spray flow rate measuring device 1, and also collects, transfers, and transmits measurement data from each measuring device. The control panel 50 is configured around a microcomputer and includes drive circuits for each device, relay circuits, wireless communication devices that comply with the Wi-Fi standard, and the like. The microcomputer is configured with a CPU, program memory, parameter memory, work memory, communication control unit, A / D converter, I / O port, and the like.

[0058] The control panel 50 includes a wireless communication unit 71 for wireless communication with other water spray flow rate measuring devices 1 and a central information device 100 (described later), a valve control unit 72 for controlling the branch path valves 13F, 13B and the air vent valves 21F, 21B, a control information transmission unit 73 for transmitting control information related to the controls and operations performed by the water spray flow rate measuring device 1, and a control command reception unit 74 for receiving information commanding the control of the water spray flow rate measuring device 1. The control panel 50 also includes a flow measurement control unit 75 for controlling the measurement of the water spray flow rate of the water spray nozzle. The control panel 50 also includes a measurement data transmission unit 76 for transmitting measurement data of the flow meters 9F, 9B and the ultrasonic water level gauge 43. The control panel 50 also includes a device information transmission unit 77 for transmitting device information identifying the water spray flow rate measuring device 1, a signal control unit 78 for controlling the signal indicators 40L, 40R, a signal information transmission unit 79 for transmitting information to be displayed on the signal indicators 40L, 40R, a laser marker control unit 80 for controlling the laser marker 42, and an illumination control unit 81 for controlling the illumination device. Each block of the control panel 50 is realized by cooperation of the microcomputer of the control panel 50, each device, and the control circuit of each device. The control information transmitter 73, control command receiver 74, measurement data transmitter 76, device information transmitter 77, and signal information transmitter 79 transmit and receive information handled by each unit through the wireless communication unit 71. The control command receiver 74 and measurement data transmitter 76 transmit and receive information handled by each unit with the operation panel 41 through a wired network. The information transmitted by the control information transmitter 73, measurement data transmitter 76, device information transmitter 77, and signal information transmitter 79 corresponds to device-related information regarding the water spray flow rate measuring device 1. The information received by the control command receiver 74 corresponds to operation command information. Here, the operation command information received by the control command receiver 74 corresponds to information instructing the control of the branch path valves 13F and 13B and the air vent valves 21F and 21B. Other examples of operational command information include information commanding the transmission of control information, information commanding the transmission of device information, information commanding the transmission of operating status, and information commanding the transmission of measurement data from flow meters 9F, 9B and ultrasonic water level meter 43.These pieces of operational command information are information that directly commands the operation of the water spray flow rate measuring device. Also, information indicating parameters set for controlling the water spray flow rate measuring device, such as the conditions for controlling the branch path valves 13F, 13B and the air vent valves 21F, 21B from an open state to a closed state or from a closed state to an open state, falls under the operational command information.

[0059] The operation panel 41 is connected to the control panel 50 via a wired network and receives inputs from the operator commanding the operation of the valves of the water spray flow rate measuring device 1 and inputs indicating the operating status of the water spray flow rate measuring device 1. It also records the measurement data of the flow meters 9F, 9B and the ultrasonic water level gauge 43 transferred from the control panel 50. That is, as shown in FIG. 5 , the operation panel 41 has an input unit 82 that receives inputs commanding the opening and closing of the branch path valves 13F, 13B and the air vent valves 21F, 21B, the on / off of the laser marker 42 and the lighting device, and the display content of the signal indicators 40L, 40R. The input unit 82 can be configured with push buttons, a touch panel, or the like. The operation panel 41 also has a display unit 83 that displays the open / closed status of the valves, the on / off status of the laser marker 42 and the lighting device, and the display status of the signal indicators 40L, 40R. The display unit 83 can be configured with a status indicator lamp, a display device such as an LCD panel, or the like. The control panel 41 also has a recording unit 84 that records the measurement data of the flow meters 9F, 9B and the ultrasonic water level gauge 43. The recording unit 84 is configured to include a semiconductor memory, a magnetic disk, etc., and has functions such as starting and stopping the recording of the measurement data of the flow meters 9F, 9B and the ultrasonic water level gauge 43, and inputting and outputting the recorded data.

[0060] This operation panel 41 is mainly composed of a microcomputer and has the above-mentioned push buttons, LCD panel, data storage device, etc. The microcomputer is composed of a CPU, program memory, parameter memory, work memory, communication control unit, A / D converter, I / O port, etc. Each block of this operation panel 41 is realized by cooperation between the above-mentioned microcomputer, each device, and the control circuit of each device, etc.

[0061] The control panel 50 and the operation panel 41 are supplied with power by a battery 85 installed in the water spray flow rate measuring device 1. The control panel 50 and the operation panel 41 constitute the control device of the present invention. Here, the control device may be realized in a form other than the control panel 50 and the operation panel 41. For example, any of the functions of the control panel 50 and the operation panel 41 may be installed separately on different panels. Furthermore, the control panel 50 and the operation panel 41 may be formed integrally.

[0062] Next, an operation of the flow rate measurement control section 75 of the control panel 41 of the water spray flow rate measuring device 1 when measuring the amount of water sprayed from the water spray nozzle will be described.

[0063] Before the water spray nozzles begin spraying water, the water collection pipes 5FL, 5FR, 5BL, and 5BR are connected to the water spray nozzles by water collection hoses 58, and the branches 10FL, 10FR, 10BL, and 10BR of the water collection pipes 5FL, 5FR, 5BL, and 5BR are connected to the branch pipes 12F and 12B by branch hoses 11F and 11B. The control panel 50 and the operation panel 41 are powered on, activating the flowmeters 9F and 9B and other measuring instruments, as well as the recording unit 84 of the operation panel 41. When the control panel 50 is activated, the flowmeter measurement control unit 75 begins control. Under the control of the flowmeter measurement control unit 75, the valve control unit 72 controls the branch path valves 13F and 13B and the air vent valves 21F and 21B to open. When the recording unit 84 is activated, recording of measurement data from the flowmeters 9F and 9B and the ultrasonic water level gauge 43 begins. Once preparations to receive water spray have been completed by connecting to the water spray nozzles and turning on the power to the control panel 50 and operation panel 41, the operator inputs a signal indicating that preparations to receive water spray are complete into the input section 82 of the operation panel 41. When the completion of preparations for receiving water spray by the water spray flow rate measuring device 1 is displayed on the signal indicators 40L, 40R and the central information device 100 (described later), the person in charge of the water spray equipment starts the supply of water to the water spray nozzles, and water spraying from the water spray nozzles begins.

[0064] FIG. 6 is a graph showing the operational status of the branch path valves 13F, 13B and the air vent valves 21F, 21B and the change in the flow rate of water flowing through the main water pipes 8F, 8B when measuring the water spray flow rate of the water spray nozzles. In FIG. 6, the horizontal axis represents time, and the elapsed time of water spray is shown, with the start of water spray from the water spray nozzles being zero. The vertical axis represents the flow rate of water flowing through the main water pipes 8F, 8B, as measured by the flow meters 9F, 9B. The operation of the branch path valves 13F, 13B and the air vent valves 21F, 21B to measure the water spray flow rate of the water spray nozzles is controlled by the flow measurement control unit 75 of the control panel 50. First, when water spray from the water spray nozzles begins at time zero, the flow rate of water flowing through the main water pipes 8F, 8B increases from zero.

[0065] After this, at time T1, the flow measurement control unit 75 detects, based on the measurement data of the flow meters 9F, 9B, that the flow rate in the main water pipes 8F, 8B has reached a predetermined reference value L1. In response, the flow measurement control unit 75 controls the branch path valves 13F, 13B and the air vent valves 21F, 21B to close via the valve control unit 72 of the control panel 50. When the branch path valves 13F, 13B and the air vent valves 21F, 21B are closed, all water discharged from the water spray nozzles is directed to the air bubble separation tanks 3F, 3B, increasing the flow rate of water through the main water pipes 8F, 8B. After this, when the air disappears from the water spray nozzles through the water collection pipes 5FL, 5FR, 5BL, 5BR and the air bubble separation tanks 3F, 3B to the main water pipes 8F, 8B, the flow rate through the main water pipes 8F, 8B matches the water spray flow rate from the water spray nozzles. As a result, the measured values ​​of the flow meters 9F and 9B become steady states indicating the water spray flow rates of the water spray nozzles.

[0066] At time T2, when the flow rate measurement control unit 75 detects that the flow rate in the main water pipes 8F, 8B has reached a steady state based on the measurements of the flow meters 9F, 9B, it records this flow rate as the water spray flow rate of the water spray nozzles. That is, under the control of the flow rate measurement control unit 75, a flag is set in the measurement data of the flow meters 9F, 9B recorded by the recording unit 84 of the operation panel 41 to indicate that it is the water spray flow rate at time T2.

[0067] After this, when the discharge of water from the water spray nozzles ends at time T3, the flow rate in the main water pipes 8F, 8B decreases. When the flow rate measurement control unit 75 detects this decrease in flow rate in the main water pipes 8F, 8B based on the measurements of the flow meters 9F, 9B, it flags the measurement data of the flow meters 9F, 9B recorded by the recording unit 84 as not representing the water spray flow rate at time T3 under the control of the flow rate measurement control unit 75. When it detects that the flow rate in the main water pipes 8F, 8B further decreases and falls below the reference value L1 at time T4, the flow rate measurement control unit 75 controls the branch path valves 13F, 13B and the air vent valves 21F, 21B to open via the valve control unit 72 of the control panel 50. When the branch path valves 13F, 13B and the air vent valves 21F, 21B are opened, water discharged from the water spray nozzles is guided from the branch points 10FL, 10FR, 10BL, 10BR of the water collection pipes 5FL, 5FR, 5BL, 5BR through the branch hoses 11F, 11B and the branch pipes 12F, 12B to the water tank 4, and also from the water collection pipes 5FL, 5FR, 5BL, 5BR to the air bubble separation tanks 3F, 3B. After this, when the discharge of water from the water spray nozzles stops, the flow rate of the main water pipes 8F, 8B becomes zero at T5. Furthermore, when the discharge of water from the water spray nozzles stops, water in the water collection hose 58 is discharged mainly from the branch points 10FL, 10FR, 10BL, 10BR of the water collection pipes 5FL, 5FR, 5BL, 5BR through the branch hoses 11F, 11B and the branch pipes 12F, 12B to the water tank 4.

[0068] In this way, the flow measurement control unit 75 operates the branch path valves 13F, 13B and the air vent valves 21F, 21B based on the water flow rate of the main water pipes 8F, 8B. This quickly vents air between the water spray nozzles and the air bubble separation tanks 3F, 3B when the water spray nozzles begin spraying, quickly matching the flow rate of the main water pipes 8F, 8B to the water spray rate of the water spray nozzles. Therefore, the flow meters 9F, 9B in the main water pipes 8F, 8B can begin recording the water spray flow rate quickly after the water spray nozzles begin spraying. This effectively reduces the amount of water used when checking the water spray flow rate. Furthermore, the flow measurement control unit 75 operates the branch path valves 13F, 13B and the air vent valves 21F, 21B based on the water flow rate of the main water pipes 8F, 8B and identifies the portion of the measurement data from the flow meters 9F, 9B that corresponds to the water spray flow rate. This allows for easier recording of the water spray flow rate with higher accuracy than before, without requiring skilled operators.

[0069] In addition to control by the flow measurement control unit 75 of the control panel 50, an operator may input commands to the input unit 82 of the operation panel 41 to open or close the branch path valves 13F, 13B and the air vent valves 21F, 21B based on the measurement data of the flow meters 9F, 9B, causing the valve control unit 72 to execute open and close controls, and record the measurement values ​​of the flow meters 9F, 9B as the water spray flow rate when the flow rate in the main water pipes 8F, 8B reaches a steady state. Even in this case, the water spray flow rate can be recorded more easily and with higher accuracy than in the past, without the need for skilled personnel as in the past. Furthermore, an operator of the central information device 100, described below, may operate the branch path valves 13F, 13B and the air vent valves 21F, 21B and record the measurement values ​​based on the measurement data of the flow meters 9F, 9B. That is, commands to open and close the branch path valves 13F, 13B and the air vent valves 21F, 21B may be input to the central information device 100 to cause the valve control unit 72 to execute open and close control, and the measured values ​​of the flow meters 9F, 9B may be recorded as the water spray flow rate when the flow rate in the main water pipes 8F, 8B reaches a steady state. Here, the measured values ​​of the flow meters 9F, 9B may be recorded by setting a flag indicating that the measured data stored in the recording unit 84 of the control panel 50 is the water spray flow rate, or by transferring the measured data from the control panel 50 and receiving and storing this measured data in the central information device 100.

[0070] Figure 7 is a right side view showing a schematic diagram of inspection of a tunnel's water spray equipment using multiple water spray flow measuring devices 1, and Figure 8 is a rear view showing one water spray flow measuring device 1 during inspection.

[0071] The tunnel water spraying system includes pumps installed around tunnel T, a pump control device that controls the operation of the pumps, and a main distribution pipe arranged in the tunnel axial direction through which water is pumped by the pumps. The water spraying system also includes distribution pipes 55 branching off from the main distribution pipe and arranged in each section within tunnel T, a water distribution switching valve arranged in each distribution pipe 55 to control the supply of water from the main distribution pipe to the distribution pipes 55, and ten water spray nozzles for each distribution pipe 55. The water spray nozzles are installed on the upper part of tunnel wall 54 approximately every 5 m in the tunnel axial direction. Furthermore, fire sensors that detect fires and fire notification buttons that are pressed in the event of a fire are arranged on tunnel wall 54, and these fire sensors and fire notification buttons are connected to the pump control. When the fire sensor detects a fire or the fire notification button is pressed, the pump control device activates the pumps and switches the water distribution switching valve corresponding to the section where the fire was detected to an open state. This allows water to be released from the water spray nozzles in the section where the fire has occurred. In this embodiment, inspection is performed on 10 water spray nozzles in one section of the water spray equipment.

[0072] When measuring the water spray rate of a water spray nozzle installed on the left side of the lane of tunnel T, as shown in Figures 7 and 8, a truck 52 carrying a water spray flow rate measuring device 1 is parked on the roadside near tunnel wall 54. This truck 52 is positioned so that the water spray flow rate measuring device 1 is located between two water spray nozzles that measure the water spray flow rate. During this positioning, laser marker 42 is activated to adjust the parking position of truck 52 so that the laser light irradiation position coincides with the water spray nozzle. As a result, the longitudinal center of water spray flow rate measuring device 1 is positioned so that it coincides with the center between the two water spray nozzles, and the water spray nozzles that measure the water spray flow rate are located in front of and behind this water spray flow rate measuring device 1. In this way, one water spray flow rate measuring device 1 is installed for every two water spray nozzles, for a total of five water spray flow rate measuring devices 1 installed in one section.

[0073] Once the water spray flow rate measuring device 1 is placed on the roadside, a water collection jig 57 is attached to the water spray nozzle. Figure 9 is a perspective view showing the water collection jig 57 attached to the water spray nozzle. As shown in Figure 9, the water spray nozzle 64 is installed at the tip of a branch pipe 63 branching off from a water distribution pipe 55 arranged along the tunnel wall 54. The water spray nozzle 64 has a long-distance water outlet 65 and a short-distance water outlet 66. A box-shaped water collection jig 57 is attached so as to house the water spray nozzle 64 and the tip of the branch pipe 63 inside. The water collection jig 57 is formed of two separate parts, which are rotatably connected to each other by a hinge. The edges of the two separate parts of the water collection jig 57 opposite the hinge have notches that fit into the circumferential surface of the branch pipe 63. With the two divided parts of this water collecting jig 57 open on their hinges, one of the divided parts is placed behind the water spray nozzle 64 and the tip of the branch pipe 63. The other divided part is then rotated around the hinge and placed so that it covers the front of the water spray nozzle 64 and the tip of the branch pipe 63, and the divided parts are joined together. As a result, with the water spray nozzle 64 and the tip of the branch pipe 63 housed inside the water collecting jig 57, the notch fits into the circumferential surface of the branch pipe 63. A lining is provided at the contact area between the joint of the divided parts and the circumferential surface of the branch pipe 63 where the notch meets. As a result, the water collecting jig 57 is fixed to the branch pipe 63 with the water spray nozzle 64 sealed inside.

[0074] Once the water collection jig 57 is fixed to the branch pipe 63, the upstream end of the water collection hose 58 is connected to the drain outlet 67 provided at the bottom front of the water collection jig 57. Then, the downstream end of the water collection hose 58 is connected to the water collection pipes 5FL, 5FR, 5BL, and 5BR of the water spray flow rate measuring device 1. In this embodiment, the water collection hose 58 connected to the water spray nozzle 64 is connected to the front and rear water collection pipes 5FL and 5BL on the left side, where the water spray nozzle 64 is located, of the left and right water collection pipes 5FL, 5FR, 5BL, and 5BR. In this way, the water spray nozzle 64 is connected to the water collection pipes 5FL and 5BL of the water spray flow rate measuring device 1. Here, the work of fixing the water collection jig 57 to the water spray nozzle 64 and the work of connecting the water collection hose 58 to the water collection jig 57 may be performed before the work of placing the water spray flow rate measuring device 1 on the roadside strip.

[0075] When the water spray flow rate measuring device 1 is placed on the roadside, a drain hose 61 is connected to the drain pipe 33L located at the bottom on the left side of the water spray flow rate measuring device 1, and the downstream end of the drain hose 61 is inserted into a drain ditch 60 located on the road shoulder to the left of the water spray flow rate measuring device 1. This allows the water stored in the water tank 4 to be drained into the drain ditch 60, preventing the problem of water flowing onto the road surface during inspection. Here, if there is no drain ditch near the installation location of the water spray flow rate measuring device 1, water from the water spray nozzle can be stored in the water tank 4 while checking the water level during inspection so that it does not become full, and after the inspection is completed, the device can be moved from the inspection position to a location where it can be drained and the water in the water tank 4 can be drained.

[0076] Five water spray flow rate measuring devices 1,1,1,... placed in the section of the water spray equipment to be inspected compile and control measurement data using a single central information device operated by an operator. Fig. 10 is a schematic diagram showing how information is communicated between the central information device 100 and the five water spray flow rate measuring devices 1,1,1,... in one section, and Fig. 11 is a block diagram showing the central information device 100. The five water spray flow rate measuring devices 1,1,1,... and the central information device 100 constitute the water spray flow rate measuring system of the present invention.

[0077] As shown in FIG. 10 , the central information device 100 receives, via wireless communication, the measurement data measured by the water spray flow rate measuring devices 1,1,1,... in cars 1 through 5. Specifically, the control panels 50A, 50B, 50C, and 50D for the water spray flow rate measuring devices 1,1,1,... in cars 1 through 4 send the measurement data of each of the water spray flow rate measuring devices 1,1,1,... in cars 1 through 4 to the control panel 50E for the water spray flow rate measuring device 1 in car 5. The control panel 50E for the water spray flow rate measuring device 1 in car 5 adds the measurement data of the water spray flow rate measuring devices 1,1,1,... in car 5 to the received measurement data of the water spray flow rate measuring devices 1,1,1,... in cars 1 through 4, and transmits the measurement data of all the water spray flow rate measuring devices 1,1,1,... together to the central information device 100.

[0078] Furthermore, when an operator inputs an operation command to any of the water spray flow rate measuring devices 1,1,1,... in cars 1 through 5, the central information device 100 transmits operation command information indicating this operation command to the control panel 50E of the water spray flow rate measuring device 1 in car 5. If the received operation command information is addressed to the water spray flow rate measuring devices 1,1,1,... in cars 1 through 4, the control panel 50E of the water spray flow rate measuring device 1 in car 5 transfers the operation command information to the control panels 50A, 50B, 50C, and 50D of the corresponding water spray flow rate measuring devices 1,1,1,... The control panels 50A, 50B, 50C, and 50D of the corresponding water spray flow rate measuring devices 1,1,1,... perform control in accordance with the received operation command information. On the other hand, when the control panel 50E of the water spray flow rate measuring device 1 in car 5 receives operation command information addressed to the water spray flow rate measuring device 1 in car 5, it executes control in accordance with the operation command information. In this way, the central information device 100 and the control panels 50A, 50B, 50C, 50D, 50E of the water spray flow rate measuring devices 1, 1, 1, ... in cars 1 to 5 are configured to send and receive measurement data and operation command information via the control panel 50E of car 5. Here, the operation command information corresponds to information instructing the opening and closing of the branch path valves 13F, 13B and air vent valves 21F, 21B of the spray flow rate measuring device 1, information instructing the transmission of control information, information instructing the transmission of device information, information instructing the transmission of operating status, information instructing the transmission of measurement data from the flow meters 9F, 9B and the ultrasonic water level gauge 43, etc. The operational command information also includes control parameters set for controlling the equipment, such as the measurement values ​​of the flow meters 9F and 9B as conditions for controlling the branch path valves 13F and 13B and the air vent valves 21F and 21B from an open state to a closed state, and the measurement values ​​of the flow meters 9F and 9B as conditions for controlling the valves 13F, 13B, 21F, and 21B from a closed state to an open state.

[0079] The central information device 100 is composed of a tablet-type personal computer and is composed of a CPU, program memory, parameter memory, work memory, communication control unit, A / D converter, I / O port, etc. The central information device 100 also has a built-in wireless communication device that complies with the Wi-Fi standard. As shown in FIG. 11 , the central information device 100 has a wireless communication unit 101 that performs wireless communication with the water spray flow rate measuring device 1, a display unit 102 composed of an LCD panel or the like, an input unit 103 composed of a touch panel or the like, and a recording unit 104 that records measurement data of the water spray flow rate measuring device 1, etc.

[0080] The recording unit 104 of this central information device 100 records the measurement data of the water spray flow rate measuring device 1, as well as information about the tunnel to be inspected, information about the water spray equipment installed in the tunnel, and information about the section of the water spray equipment. In detail, the name of the tunnel to be inspected and information about the section of the water spray equipment installed in each tunnel are stored. The information about the section includes the name of the section, the type and installation location of the water spray nozzle installed in each section, and points to note when performing the inspection.

[0081] Furthermore, this central information device 100 has a section information reading and setting unit 105 that reads information about the section of the water spray equipment to be inspected from information pre-recorded in the recording unit 104 and performs settings corresponding to input and recording for the inspection based on the read information. It also has a measurement data display control unit 106 that displays measurement data of each water spray flow measuring device 1, 1, 1, ... on the display unit 102 when an inspection is performed. It also has a signal information display control unit 107 that displays the operating status displayed on the signal indicators 40L, 40R of each spray flow measuring device 1, 1, 1, ... on the display unit 102 when an inspection is performed. It also has an alarm control unit 108 that issues a warning through the display unit 102 or a speaker (not shown) when the measurement values ​​of the flow meters 9F, 9B or the ultrasonic water level gauge 43 are abnormal. The central information device 100 also includes a control command transmission unit 109 that, upon receiving inputs via the input unit 103 instructing the control and operation of each water spray flow rate measuring device 1,1,1,... during inspection, transmits control command information, which is information indicating these commands, to the water spray flow rate measuring devices 1,1,1,... The control command information transmitted by the control command transmission unit 109 corresponds to operation command information. The central information device 100 also includes a measurement data recording control unit 110 that controls the recording of measurement data received from each water spray flow rate measuring device 1,1,1,... within the section, from the flow meters 9F, 9B and ultrasonic water level gauge 43. The central information device 100 also includes a graph display control unit 111 that controls the display of graphs on the display unit 102 from the measurement data received from each water spray flow rate measuring device 1,1,1,... within the section. The central information device 100 also includes a battery 112 that supplies power to the central information device 100.

[0082] The control panel 50E of the water spray flow rate measuring device 1 of car No. 5 includes, in addition to the blocks shown in the block diagram of FIG. 5 , a central wireless communication unit (not shown) that communicates wirelessly with the central information device 100. The control panel 50E also includes a database creation unit that adds the measurement data of the water spray flow rate measuring device 1 of car No. 5 to the measurement data received from the control panels 50A, 50B, 50C, and 50D of the water spray flow rate measuring devices 1, 1, 1, . . . of cars No. 1 through No. 4 to create a database of all the measurement data of the water spray flow rate measuring devices 1, 1, 1, . . . of cars No. 1 through No. 5. The control panel 50E also includes a database transmission unit that transmits the contents of the database created by the database creation unit to the central information device 100. The control panel 50E also includes an operation command information transfer unit that transfers operation command information addressed to the water spray flow rate measuring devices 1, 1, 1, . . . of cars No. 1 through No. 4 received from the central information device 100 to the corresponding control panels 50A, 50B, 50C, and 50D. The operation command information includes control command information, such as information instructing the control of the branch path valves 13F, 13B and the air vent valves 21F, 21B. The operation command information also includes information instructing the transmission of control information, information instructing the transmission of device information, information instructing the transmission of operating status information, and information instructing the transmission of measurement data of the flow meters 9F, 9B and the ultrasonic water level gauge 43. The operation command information also includes control parameters set for device control, such as the measurement values ​​of the flow meters 9F, 9B as conditions for controlling the branch path valves 13F, 13B and the air vent valves 21F, 21B from an open state to a closed state, and the measurement values ​​of the flow meters 9F, 9B as conditions for controlling the valves 13F, 13B, 21F, 21B from a closed state to an open state. The central wireless communication unit, database creation unit, database transmission unit and operation command information transfer unit may be provided on the control panel 50E of the water spray flow rate measuring device 1 of car No. 5, or may be provided on a repeater separate from the control panel 50E that is installed in the water spray flow rate measuring device 1 of car No. 5. The repeater may be configured with a PLC (Programmable Logic Controller) or the like.

[0083] 12 is a diagram showing an inspection execution image displayed on the display unit 102 of the central information unit 100 when inspecting water spray equipment in a specified section of a specified tunnel using five water spray flow rate measuring devices 1. This inspection execution image 120 is used to input various commands such as operation and control to the central information unit 100 and the water spray flow rate measuring devices 1 in cars 1 through 5, and also displays information about the section to be inspected, the measurement data of each water spray flow rate measuring device 1, whether the measurement data is normal, and the operating status of each water spray flow rate measuring device 1.

[0084] As shown in Fig. 12, the inspection execution image 120 has a main menu button 121 for transitioning to a main menu for selecting functions of the central information device 100. In the main menu transitioned to by this main menu button 121, it is possible to perform an operation of reading information about the tunnel to be inspected from a database that stores information about multiple tunnels, and an operation of reading the inspection execution image 120 of Fig. 12. In addition, in the main menu, it is possible to perform an operation of viewing data stored in the database of the central information device 100 and the control panel 50E of the water spray flow rate measuring device 1 of car No. 5, an operation of checking the quantity of materials to be used in the inspection, and an operation of configuring settings related to the operation of various programs executed by the central information device 100 and the water spray flow rate measuring device 1.

[0085] The inspection execution image 120 also has a graph display button 122 for displaying collected measurement data in a graph, and a valve operation button 123 for the branch path valves 13F, 13B and air vent valves 21F, 21B of all water spray flow rate measuring devices 1. Pressing the valve operation button 123 transitions to a confirmation screen for checking the open / closed status of the branch path valves 13F, 13B and air vent valves 21F, 21B.

[0086] The inspection execution image 120 also has an instantaneous data save button 125 that records the measurement data of the flowmeters 9F, 9B of all the water spray flow measuring devices 1,1,1,... when the button is pressed, a record start button 126 that instructs the start of recording the measurement data of the flowmeters 9F, 9B of all the water spray flow measuring devices 1,1,1,..., and a record stop button 127 that instructs the stop of recording the measurement data of the flowmeters 9F, 9B. Here, the recording of the measurement data of the flowmeters 9F, 9B may be performed by setting a flag for the measurement data stored in the recording unit 84 of the control panel 50 or in a database. The portion of the constant data corresponding to the flag may be later received from the control panel 50, and the received measurement data may be stored in the central information device 100.

[0087] The inspection execution image 120 also has a selection button 130 for selecting and reading out information about tunnels and sections in order to perform an inspection and display measurement data. The names of the tunnels and sections selected with the selection button 130 and currently displayed are displayed in a tunnel name display field 131 and a section display field 132.

[0088] The inspection execution image 120 also has a vehicle column 135 extending in the row direction. This vehicle column 135 shows schematic diagrams of vehicles No. 1 through No. 5, each equipped with a water spray flow rate measuring device 1, along with the water storage percentage and operating status of the water tank 4. In the vehicle column 135 of FIG. 12, the numbers in the vehicle schematic diagrams correspond to water storage volume indicators 136 that display the water storage percentage. A circular operating status indicator 137, which displays the operating status by color, is located above the vehicle schematic diagram. The states corresponding to the colors shown on the operating status indicator 137 are shown in an operating status column 148 below. The background of the water storage volume indicator 136 in the vehicle schematic diagram is colored according to the value of the water storage percentage displayed on the water storage volume indicator 136. The range of values ​​for the water storage percentage corresponding to the background color of the water storage volume indicator 136 is displayed in a water storage percentage column 149 below.

[0089] In this inspection execution image 120, information about the water spray nozzles measured by the water spray flow rate measuring device 1 of each car and information about the measured values ​​of the flow meters 9F and 9B of the water spray flow rate measuring device 1 of each car are arranged in a column direction corresponding to the schematic diagram of cars 1 to 5 listed in the car column 135. Specifically, a front-rear display column 141 is provided below the car column 135, and this front-rear display column 141 displays "F system," which refers to the column showing the measurement results of the flow meter 9F on the front side of the water spray flow rate measuring device 1, and "B system," which refers to the column showing the measurement results of the flow meter 9B on the rear side of the water spray flow rate measuring device 1. Below this front-rear display column 141 is a head number display column 142, which displays the unique numbers of the water spray nozzles connected to the front water collection pipes 5FL and 5FR and the unique numbers of the water spray nozzles connected to the rear water collection pipes 5BL and 5BR. Below this head number display column 142 is a head type display column 143, which displays the type of connected water spray nozzle. Below the head type display field 143 is a flow rate value field 144 that displays the flow rate values ​​of the main water pipes 8F, 8B measured by the flow meters 9F, 9B before and after each water spray flow rate measuring device 1 in real time. Below this flow rate value field 144 is a reference value field 145 that displays the reference value of the flow rate corresponding to the main water pipes 8F, 8B before and after each water spray flow rate measuring device 1. Based on the reference value in the reference value field 145, the background of the flow rate value field 144 changes color to indicate that the measurement values ​​of the flow meters 9F, 9B are lower than the reference value, or to indicate that the measurement values ​​of the flow meters 9F, 9B are equal to or higher than the reference value. The colors used when the measurement values ​​of the flow meters 9F, 9B are lower than the reference value and when the measurement values ​​of the flow meters 9F, 9B are equal to or higher than the reference value are displayed in the flow rate value field 152 at the bottom. Below the reference value field 145 is a remarks field 146 in which any information regarding each water spray nozzle can be entered. Below this remarks column 146 is a notes column 147 that displays notes regarding the section to be inspected. Below this notes column 147 is the operation status column 148, and below this operation status column 148 is the water storage ratio column 149. Furthermore, the inspection execution image 120 has a counter 150 that displays the elapsed time since the recording start button 126 was pressed to start recording the measurement data, and a time display column 151 that displays the start time of recording.

[0090] By using the central information device 100 of this embodiment, the operational status, measurement values ​​of the flow meters 9F and 9B, and water storage percentage of the water tank 4 for the water spray flow rate measuring devices 1, 1, 1, ... in cars 1 through 5 can be easily grasped with a small number of personnel through the inspection execution image 120. Therefore, inspection of the 10 water spray nozzles in the target section can be easily and efficiently performed with a small number of personnel. In particular, abnormalities in the water storage percentage, operational status, and measurement values ​​of the flow meters 9F and 9B can be quickly detected based on the numerical value and background color of the water storage volume display section 136 displayed in the vehicle column 135 of the inspection execution image 120, the color displayed in the operation status display section 137, and the numerical value and background color of the flow rate value column 144. As a result, abnormalities in the water spray nozzles can be quickly detected and problems and accidents can be prevented. Furthermore, water spray flow rates for the 10 water spray nozzles in the target section can be recorded centrally from a remote location. In addition, the measurement data of the water spray flow rate for the above 10 water spray nozzles can be displayed on a graph, making it easy to understand changes in the water spray flow rate.

[0091] Furthermore, when measuring the water spray flow rate of the water spray nozzles, the water spray flow rate measuring devices 1,1,1,... on cars 1 to 5 autonomously control the branch path valves 13F, 13B and the air vent valves 21F, 21B using the flow rate measurement control unit 75 of the control panel 50. Therefore, the operator of the central information device 100 can measure the water spray flow rate of the 10 water spray nozzles present in the section to be inspected and easily collect the measurement data, without having to operate the water spray flow rate measuring devices 1,1,1,... on cars 1 to 5.

[0092] In the above embodiment, the central information device 100 communicates wirelessly with the control panel 50E of the water spray flow rate measuring device 1 in car 5, and receives measurement data from the water spray flow rate measuring devices 1,1,1,... in cars 1 to 5 via the control panel 50E of car 5, and also transmits operation command information to the water spray flow rate measuring devices 1,1,1,... in cars 1 to 5. However, the central information device 100 may also communicate directly with each of the control panels 50A,...,50D of the water spray flow rate measuring devices 1 in cars 1 to 4 without going through the control panel 50E of car 5.

[0093] Furthermore, in the above embodiment, the control panels 50A,...,50E of the water spray flow rate measuring devices 1,1,1,... from car 1 to car 5 have flow rate measurement control units 75, but the control panel 50E of the water spray flow rate measuring device 1 of car 5 may be provided with an overall flow rate measurement control unit that collectively controls the branch path valves 13F, 13B and air vent valves 21F, 21B of the water spray flow rate measuring devices 1,1,1,... from car 1 to car 5. In this case, the control panels 50A,...,50D of the water spray flow rate measuring devices 1 of cars 1 to 4 do not need to have the flow rate measurement control units 75.

[0094] Furthermore, in the above embodiment, the central information device 100 may be configured to be able to operate the branch path valves 13F, 13B and the air vent valves 21F, 21B of the water spray flow rate measuring devices 1,1,1,... in cars 1 to 5. In particular, a valve operation button is provided on the inspection execution image 120 displayed by the central information device 100, and when this valve operation button is pressed, a valve operation screen is displayed in which the branch path valves 13F, 13B and the air vent valves 21F, 21B of the water spray flow rate measuring devices 1,1,1,... in cars 1 to 5 are operated. On this valve operation screen, input buttons are displayed for receiving commands to open or close the branch path valves 13F, 13B and the air vent valves 21F, 21B of each water spray flow rate measuring device 1,1,1,... When input is made to this valve operation screen, the control command transmitting unit 109 transmits, as control command information, information instructing the opening and closing of the branch path valves 13F, 13B and the air vent valves 21F, 21B. This control command information is received by the control panel 50E of the water spray flow rate measuring device 1 in car No. 5, and the control command information addressed to the water spray flow rate measuring devices 1, 1, 1, ... in cars No. 1 to No. 4 is transferred to the corresponding control panels 50A, 50B, 50C, 50D and executed, and the control command information addressed to the water spray flow rate measuring device 1 in car No. 5 is executed by the control panel 50E.

[0095] In this way, the central information device 100 may be configured to centrally execute the operation of the branch path valves 13F, 13B and the air vent valves 21F, 21B of the water spray flow rate measuring devices 1, 1, 1, ... in cars 1 through 5 from a remote location. In this case, the operator issues commands to open and close the branch path valves 13F, 13B and the air vent valves 21F, 21B in accordance with the changes in the flow rate of the flow meters 9F, 9B shown in Figure 6, and records the measurement values ​​of the flow meters 9F, 9B when the flow rate of the main water pipes 8F, 8B reaches a steady state as measurement data. As a result, a single operator can centrally perform the measurement of the ten water spray flow rates of the water spray flow rate measuring devices 1, 1, 1, ... in cars 1 through 5 from a remote location. Moreover, the water spray flow rate measuring device 1 can start recording the water spray flow rate shortly after the water spray nozzles start spraying water, making it possible to easily record the water spray flow rate with higher accuracy than conventional methods without requiring skilled operators.

[0096] Furthermore, the water spray flow rate measuring device 1 of this embodiment guides water discharged from the water spray nozzles to the main water pipes 8F, 8B, measures the flow rate with the flow meters 9F, 9B, and stores the water after the flow rate measurement in the water tank 4, thereby preventing the inconvenience of water flowing out onto the road as in the past. Therefore, it is possible to effectively prevent the risk of water flowing out onto the road causing adverse effects such as soiling and hydroplaning on vehicles traveling on lanes in use as in the past.

[0097] In the water spray flow rate measuring system of the above embodiment, five water spray flow rate measuring devices 1, 1, 1, ... were used to measure the water spray flow rate of ten water spray nozzles 64, 64, 64, ..., but the number of water spray flow rate measuring devices 1 used in inspecting water spray equipment and the number of water spray nozzles measuring the water spray flow rate may be other numbers.

[0098] The present invention is not limited to the above-described embodiments, and many modifications can be made by a person having ordinary skill in the art within the technical concept of the present invention. [Explanation of symbols]

[0099] 1 Water spray flow rate measuring device 2 Tank body 3F,3B Air bubble separation tank 4. Water tank 5FL,5FR,5BL,5BR Water collection pipe 8F,8B main water pipe 9F,9B Flow meter 10FL, 10FR, 10BL, 10BR branch section 11F, 11B branch hose 12F, 12B branch piping 13F, 13B Branch path valve 20F, 20B air vent pipe 21F, 21B Air vent valve 26F, 26B filters 27F, 27B inspection hatch 33L,33R Drain pipe 40L, 40R signal indicator 41 Control panel 42 Laser Marker 43 Ultrasonic water level gauge 50, 50A, 50B, 50C, 50D, 50E control panel 52 tracks 54 Tunnel Wall 55 Water pipe 57 Water collection jig 58 Water collection hose 60 Drain 61 Drain hose 64 Water spray nozzle 100 Central Information Unit 120 Inspection execution image T-Tunnel

Claims

1. A water spray flow rate measuring device for measuring the water spray flow rate of a water spray nozzle installed in a tunnel, a water collection pipe connected to the water spray nozzle; a bubble separation tank connected to the downstream side of the water collection pipe for separating bubbles contained in the water introduced through the water collection pipe; A water tank and a main water pipe that guides the water from the air bubble separation tank to the water storage tank; a flow meter for measuring the flow rate of water flowing through the main water pipe; a branch path branching from the water collection pipe and connecting to the water storage tank; a branch path valve that opens and closes the branch path; an air vent pipe connected to the air bubble separation tank and discharging air from the air bubble separation tank; an air vent valve that opens and closes the air vent pipe; a control device that opens the branch path valve and the air vent valve before the start of water spraying by the water spray nozzle, checks the measurement value of the flow meter after the start of water spraying by the water spray nozzle, closes the branch path valve and the air vent valve when the measurement value of the flow meter exceeds a predetermined reference value, and records the measurement value of the steady state as the water spray flow rate of the water spray nozzle when it is detected that the measurement value of the flow meter has reached a steady state after the branch path valve and the air vent valve are closed; A water spray flow rate measuring device comprising:

2. 2. The water spray flow rate measuring device according to claim 1, a tank body formed in a generally rectangular parallelepiped shape, in which two of the air bubble separation tanks and one of the water storage tanks are integrally formed, The air bubble separating tanks are disposed at both longitudinal ends of the tank body, The water tank is formed in a portion of the tank body other than the two air bubble separation tanks, A water spray flow rate measuring device characterized in that the water collection pipe, the main water pipe, the flow meter, the branch path, the branch path valve, the air vent pipe, and the air vent valve are provided corresponding to each of the two bubble separation tanks.

3. 3. The water spray flow rate measuring device according to claim 2, A water spray flow rate measuring device characterized in that the water collection pipes are provided on both sides of the tank body in the width direction.

4. 3. The water spray flow rate measuring device according to claim 2, A water spray flow rate measuring device characterized in that a drain pipe for draining water from the water tank and a drain valve for opening and closing this drain pipe are provided at the bottom of both sides of the tank body in the width direction.

5. 2. The water spray flow rate measuring device according to claim 1, The water spray flow rate measuring device is characterized in that the control device opens the branch path valve when water spraying by the water spray nozzle ends.

6. 2. The water spray flow rate measuring device according to claim 1, A water spray flow rate measuring device comprising a light irradiation device that irradiates light for positioning the water spray nozzle.

7. 2. The water spray flow rate measuring device according to claim 1, A water spray flow rate measuring device characterized by comprising a filter installed downstream of the main water pipe for collecting foreign matter from the water guided by the main water pipe.

8. 2. The water spray flow rate measuring device according to claim 1, A water spray flow rate measuring device, characterized in that the control device has a wireless communication unit that transmits device-related information about the water spray flow rate measuring device.

9. 9. The water spray flow rate measuring device according to claim 8, A water spray flow measuring device characterized in that the device-related information is at least one of information indicating the measurement value of the flow meter, information indicating the amount of water stored in the water tank, and information indicating the operating status of the water spray flow measuring device.

10. 9. The water spray flow rate measuring device according to claim 8, The wireless communication unit of the control device receives operation command information that commands the operation of the water spray flow rate measuring device, A water spray flow rate measuring device, characterized in that the control device controls the operation of the water spray flow rate measuring device in accordance with the received operation command information.

11. A plurality of water spray flow rate measuring devices according to claim 8; A water spray flow rate measuring system comprising: a central information device having a wireless communication unit that receives the device-related information transmitted from the wireless communication units of the plurality of water spray flow rate measuring devices.

12. A plurality of water spray flow rate measuring devices according to claim 10; A water spray flow rate measuring system characterized by comprising a central information device having a wireless communication unit that receives the device-related information transmitted from the wireless communication units of the plurality of water spray flow rate measuring devices and transmits operation command information that commands the operation of the plurality of water spray flow rate measuring devices.

13. 13. The water spray flow rate measuring system according to claim 11 or 12, A water spray flow rate measuring system characterized in that a wireless communication unit of one of the multiple water spray flow rate measuring devices receives device-related information from a wireless communication unit of another water spray flow rate measuring device, and transmits the received device-related information of the other water spray flow rate measuring device and the device-related information of the water spray flow rate measuring device to the central information device.

14. 13. The water spray flow rate measurement system according to claim 12, A water spray flow rate measuring system characterized in that the wireless communication unit of one of the plurality of water spray flow rate measuring devices receives operation command information for at least one of the plurality of water spray flow rate measuring devices from the central information device, and if the received operation command information is for another water spray flow rate measuring device, transmits the operation command information to the other water spray flow rate measuring device.

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