WO2022059649A1 - Gas filling device - Google Patents

Gas filling device Download PDF

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Publication number
WO2022059649A1
WO2022059649A1 PCT/JP2021/033562 JP2021033562W WO2022059649A1 WO 2022059649 A1 WO2022059649 A1 WO 2022059649A1 JP 2021033562 W JP2021033562 W JP 2021033562W WO 2022059649 A1 WO2022059649 A1 WO 2022059649A1
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WO
WIPO (PCT)
Prior art keywords
filling
valve
gas
nozzle
switching valve
Prior art date
Application number
PCT/JP2021/033562
Other languages
French (fr)
Japanese (ja)
Inventor
稔 田邊
Original Assignee
トキコシステムソリューションズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トキコシステムソリューションズ株式会社 filed Critical トキコシステムソリューションズ株式会社
Priority to JP2022550552A priority Critical patent/JP7316462B2/en
Publication of WO2022059649A1 publication Critical patent/WO2022059649A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

Definitions

  • the present disclosure relates to a gas filling device that fills a filled tank of a vehicle with a fuel gas such as hydrogen gas, for example.
  • Patent Document 1 describes a hydrogen gas filling device that fills a filled tank (fuel tank) mounted on a vehicle such as a fuel cell vehicle with hydrogen gas in a high pressure state.
  • the hydrogen gas filling device of Patent Document 1 is connected to a pressure accumulator in which hydrogen gas is stored in advance via a gas supply path, and holds a filling nozzle for filling the filled tank with hydrogen gas and a filling nozzle.
  • a holding part for this purpose an on-off valve that is provided in the gas supply path and supplies hydrogen gas in the accumulator to the filling nozzle by opening the valve, and an on-off valve that can be opened and closed to open and close the tank to be filled. It is provided with a filling control means for controlling the supply of hydrogen gas.
  • a fuel gas filling device containing hydrogen gas requires maintenance of the gas supply path and filling nozzle in order to maintain its performance.
  • the on-off valve opens and the fuel gas is discharged from the filling nozzle through the gas supply path when the fuel gas filling start operation is mistakenly performed during maintenance. .. Therefore, in order to prevent the fuel gas from being discharged from the filling nozzle during maintenance, it is conceivable to provide a switching valve for switching the opening and closing in the gas supply path in addition to the on-off valve.
  • the switching valve is simply provided, the maintenance staff may not be able to visually grasp the open / closed state of the switching valve.
  • An object of the embodiment of the present invention is to provide a gas filling device capable of visually grasping the open / closed state of a switching valve by a person in charge of maintenance.
  • a gas supply path to which the upstream side is connected to a pressure accumulator in which fuel gas is accumulated and a gas supply path connected to the downstream side of the gas supply path are connected to a filled tank mounted on a vehicle.
  • the filling nozzle, a supply control valve provided in the middle of the gas supply path and supplying fuel gas in the accumulator to the filling nozzle by opening the valve, and the supply control valve are controlled to open and close.
  • a gas filling device configured to include a filling control means for controlling the supply of the fuel gas to the tank to be filled, a switching valve provided in the gas supply path and switching an open / closed state in the gas supply path.
  • the switching valve is provided with a display unit for displaying the switching state of the switching valve.
  • the person in charge of maintenance can visually grasp the open / closed state of the switching valve.
  • a hydrogen gas filling device for a vehicle that fills a filled tank of a vehicle with hydrogen gas will be taken as an example, and will be described with reference to the attached drawings.
  • the hydrogen gas filling device 1 fills a filled tank 32, which is a fuel tank of a vehicle 31 such as a fuel cell vehicle, with hydrogen gas (fuel gas) in a compressed state.
  • the hydrogen gas filling device 1 for a vehicle is installed in, for example, a facility (fuel supply station) called a hydrogen gas supply station.
  • the hydrogen gas filling device 1 includes a gas accumulator 2 for accumulating hydrogen gas compressed to a high pressure, and a dispenser unit 3 as a filling mechanism for filling the filled tank 32 of the vehicle 31 with hydrogen gas from the gas accumulator 2.
  • a gas supply pipeline 5 extending from the gas accumulator 2 to the inside of the dispenser housing 4 of the dispenser unit 3 is included.
  • the gas accumulator 2 is a hydrogen gas supply source that stores hydrogen gas compressed to a high pressure. That is, hydrogen gas as a fuel gas is accumulated in the gas accumulator 2 as the accumulator.
  • the gas accumulator 2 is connected to the dispenser unit 3.
  • the gas accumulator 2 constitutes a gas storage unit for storing hydrogen gas compressed at high pressure on the upstream side of the gas supply pipeline 5.
  • the dispenser unit 3 includes a dispenser housing 4, filling hoses 6A, 6B, filling nozzles 7A, 7B, flow rate adjusting valve 12, shutoff valve 13, heat exchanger 16, flow meter 17, pressure sensor 18, temperature sensor 19, and filling start. It includes a switch 20, a filling stop switch 21, a decompression valve 23, a control device 24, and nozzle hooks 26A and 26B.
  • the dispenser housing 4 constitutes a building that forms the outer shape of the dispenser unit 3, and is formed in a rectangular parallelepiped shape that is long in the upward and downward directions, for example.
  • a gas supply pipe line 5 As shown in FIG. 2, a gas supply pipe line 5, a flow control valve 12, a isolation valve 13, a heat exchanger 16, a pressure sensor 18, a temperature sensor 19, a control device 24, and the like are housed in the dispenser housing 4.
  • the dispenser housing 4 is provided with a display unit 25 such as a liquid crystal monitor and a liquid crystal touch panel at a position easily visible to a worker (staff) or a user (customer) who performs a hydrogen gas filling operation.
  • a first nozzle hook 26A to which the first filling nozzle 7A is detachably hooked and a second nozzle hook 26B to which the second filling nozzle 7B is detachably hooked are provided on the outside of the dispenser housing 4.
  • the nozzle hooks 26A and 26B correspond to holding portions for holding the filling nozzles 7A and 7B.
  • a configuration having a plurality of (more specifically, two) filling nozzles 7A and 7B in one dispenser unit 3 will be described as an example, but for example, one filling in one dispenser unit will be described. It may be configured to have a nozzle. Further, for example, one dispenser unit may have three or more filling nozzles.
  • the gas supply pipeline 5 is arranged in the dispenser housing 4, and supplies hydrogen gas in a pressurized state from the gas accumulator 2 toward the filling hoses 6A and 6B.
  • the upstream side of the gas supply pipeline 5 is connected to the gas accumulator 2. That is, in the gas supply pipeline 5, the gas accumulator 2 side is the upstream side, and the filling hoses 6A and 6B sides are the downstream side.
  • the downstream side of the gas supply pipeline 5 is branched into a plurality of, for example, two paths.
  • the gas supply pipe 5 is the first supply on the downstream side branched at the position of the main supply pipe 5A on the upstream side on the gas accumulator 2 side and the branch portion 5D at the downstream end of the main supply pipe 5A. It has a pipeline 5B and a second supply pipeline 5C.
  • the gas supply line 5 is branched into the first supply line 5B and the second supply line 5C on the way.
  • a first filling hose 6A extending to the outside of the dispenser housing 4 is connected to a downstream end of the gas supply pipe 5, more specifically, a downstream end of the first supply pipe 5B.
  • a second filling hose 6B extending to the outside of the dispenser housing 4 is connected to the downstream end of the second supply pipe 5C.
  • the filling hoses 6A and 6B flexible pressure resistant hoses are used.
  • the gas supply line 5 as the gas supply path includes the first supply line 5B and the second supply line 5C which are a plurality of paths.
  • maintenance related to one hydrogen gas filling path for example, maintenance of the first supply pipe line 5B, the first filling hose 6A, the first filling nozzle 7A, the first emergency disconnection coupling 8A, and the first nozzle hook 26A).
  • the hydrogen gas can be filled by using the other hydrogen gas filling path (for example, the second supply pipe line 5C, the second filling hose 6B, the second filling nozzle 7B, etc.). ..
  • the base end side of the filling hoses 6A and 6B is connected to the downstream side of the gas supply pipeline 5. That is, the base end side of the first filling hose 6A is connected to the downstream side of the first supply line 5B, and the base end side of the second filling hose 6B is connected to the downstream side of the second supply line 5C. There is. At the tip of the first filling hose 6A, a first filling nozzle 7A connected to a tank to be filled 32 mounted on the vehicle 31 is provided. At the tip of the second filling hose 6B, a second filling nozzle 7B connected to the filled tank 32 mounted on the vehicle 31 is provided.
  • a first emergency withdrawal coupling 8A is provided in the middle of the first filling hose 6A
  • a second emergency withdrawal coupling 8B is provided in the middle of the second filling hose 6B.
  • “1st filling hose 6A, 1st filling nozzle 7A and 1st emergency disconnection coupling 8A” and “2nd filling hose 6B, 2nd filling nozzle 7B and 2nd emergency disconnection coupling 8B” are the first supply pipes.
  • the configuration is the same except that it differs depending on whether it is connected to the 5B or the second supply line 5C.
  • the filling hoses 6A and 6B together with the gas supply pipeline 5 form a hydrogen gas filling path (fuel gas filling path).
  • the hydrogen gas filling path is a path (pipeline) for filling the filled tank 32 of the vehicle 31 traveling on hydrogen gas as fuel with hydrogen gas.
  • the filling nozzles 7A and 7B are connected to the downstream side of the gas supply pipeline 5 via the filling hoses 6A and 6B.
  • the filling nozzles 7A and 7B are connected to the tip ends of the filling hoses 6A and 6B in an airtight state, and form a so-called filling coupling.
  • the filling nozzles 7A and 7B are connected to the dispenser housing 4 (more specifically, the gas supply pipeline 5) via the filling hoses 6A and 6B.
  • a valve portion that can be switched between an "open position" that permits the flow of hydrogen gas and an "closed position” that blocks the flow of hydrogen gas is provided inside the filling nozzles 7A and 7B.
  • the filling nozzles 7A and 7B may be provided with a check valve in place of the valve portion or together with the valve portion.
  • the check valve allows the flow of hydrogen gas from the filling nozzles 7A and 7B to the filled tank 32 of the vehicle 31 and blocks the flow of hydrogen gas from the filled tank 32 to the filling nozzles 7A and 7B.
  • the tip side of the filling nozzles 7A and 7B is a connection coupler, and is detachably connected to the filling port 32A which is the connection port of the tank 32 to be filled. That is, when the connecting coupler of the filling nozzles 7A and 7B supplies hydrogen gas to the filled tank 32 of the vehicle 31 through the pipeline (not shown) in the filling nozzles 7A and 7B, the filling port of the filled tank 32 It is detachably connected to 32A in an airtight state. Further, the filling nozzles 7A and 7B are provided with a lock mechanism (not shown) that is detachably locked to the filling port 32A of the tank to be filled 32. As a result, the filling nozzles 7A and 7B can be prevented from being inadvertently detached from the filling port 32A when the hydrogen gas is filled.
  • the gas supply pipeline 5 the filling hoses 6A, 6B and the filling nozzles 7A, 7B are locked with respect to the filling port 32A of the tank 32 to be filled by the locking mechanism.
  • the tank 32 to be filled of the vehicle 31 is filled through the filling nozzles 7A and 7B. That is, the hydrogen gas filling device 1 is provided with filling nozzles 7A and 7B, and the filling tank 32 of the vehicle 31 is filled with hydrogen gas using the filling nozzles 7A and 7B.
  • the filling nozzles 7A and 7B are held by the nozzle hooks 26A and 26B when the filling operation is not performed.
  • the dispenser unit 3 has an inlet valve 11 located in the middle of the gas supply pipeline 5 (main supply pipeline 5A), for example, an inlet valve 11 which is manually opened and closed, and an inlet.
  • a flow rate adjusting valve 12 as a control valve that is connected to the downstream side of the valve 11 and is opened and closed by the control device 24 to control the flow rate of fuel flowing through the gas supply pipeline 5 in an adjustable manner, and a flow rate adjusting valve.
  • a isolation valve 13 which is an electromagnetic or pneumatically operated valve device connected to the downstream side of the 12 is provided.
  • the arrangement (order of installation) of the flow meter 17, the flow rate adjusting valve 12, and the isolation valve 13 provided from the upstream side to the downstream side of the gas supply pipeline 5 is limited to the order shown in FIG. It is not something that will be done.
  • the inlet valve 11 is located in the dispenser housing 4 and is provided in the middle of the gas supply pipe line 5 (main supply pipe line 5A).
  • the inlet valve 11 is attached as needed, and may be removed if unnecessary.
  • the flow rate adjusting valve 12 and the isolation valve 13 constitute a control device for controlling the flow rate and pressure of hydrogen gas flowing through the gas supply line 5.
  • the flow meter 17, the pressure sensor 18, and the temperature sensor 19 constitute a measuring device for measuring the flow rate, pressure, and temperature of hydrogen gas flowing through the gas supply line 5.
  • the flow rate adjusting valve 12 provided in the dispenser unit 3 is, for example, a pneumatically operated valve device, which is opened by supplying air and controls the control pressure (air pressure) by a control signal to increase the valve opening degree. It will be adjusted.
  • the flow rate adjusting valve 12 is controlled to an arbitrary valve opening degree by a command based on the control program of the control device 24, and variably controls the flow rate of hydrogen gas flowing in the gas supply pipeline 5 and the hydrogen gas pressure.
  • the isolation valve 13 is an electromagnetic or pneumatically operated valve device provided in the middle of the gas supply line 5 (main supply line 5A) (for example, between the cooler 14 and the pressure sensor 18). ..
  • the shutoff valve 13 is opened and closed based on a control signal from the control device 24 to allow or shut off the flow of hydrogen gas (fuel gas, filling gas) in the gas supply pipeline 5.
  • the flow rate adjusting valve 12 and the control device 24 are controlled.
  • the flow rate adjusting valve 12 and the isolation valve 13 are provided in the middle of the gas supply line 5 (main supply line 5A), and by opening the valve, the hydrogen gas in the gas accumulator 2 is filled into the filling nozzles 7A and 7B.
  • the supply control valve that supplies.
  • the cooler 14 is a cooling device for cooling the hydrogen gas flowing in the gas supply pipe line 5.
  • the cooler 14 cools the hydrogen gas at a position in the middle of the gas supply pipe 5 in order to suppress the temperature rise of the hydrogen gas filled in the tank 32 to be filled.
  • the cooler 14 is located between the flow control valve 12 and the isolation valve 13 and is provided in the heat exchanger 16 and the heat exchanger 16 provided in the middle of the gas supply line 5 (main supply line 5A). It is connected via the refrigerant pipelines 15A and 15B, and includes, for example, a chiller unit (not shown) provided with a drive mechanism such as a compressor or a pump.
  • the cooler 14 has a refrigerant conduit 15A on the supply side for supplying a refrigerant (for example, a liquid containing ethylene glycol or the like) from the chiller unit to the heat exchanger 16 side, and the heat exchanger 16 to the chiller unit side.
  • a refrigerant for example, a liquid containing ethylene glycol or the like
  • a return-side refrigerant conduit 15B for returning the refrigerant after heat exchange is provided.
  • the chiller unit circulates the refrigerant between the heat exchanger 16 and the refrigerant pipes 15A and 15B.
  • the heat exchanger 16 of the cooler 14 exchanges heat between the hydrogen gas flowing in the gas supply pipe line 5 and the refrigerant, and changes the temperature of the hydrogen gas supplied to the filling hoses 6A and 6B.
  • the temperature is lowered to the specified temperature (for example, ⁇ 33 to ⁇ 40 ° C.).
  • a corioli-type flow meter 17 is provided, which is located in the middle of the gas supply line 5 (main supply line 5A) and measures the mass flow rate of the fluid to be measured.
  • the flow meter 17 measures, for example, the flow rate (mass flow rate) of hydrogen gas flowing in the gas supply pipeline 5 between the inlet valve 11 and the flow rate adjusting valve 12, and transfers the measurement result (detection signal) to the control device 24.
  • the control device 24 calculates the amount of hydrogen gas filled in the filled tank 32 of the vehicle 31, and displays the amount of hydrogen gas fuel discharged (corresponding to the amount of refueling) on the display unit 25 or the like. As a result, for example, the display content is notified to the customer or the like.
  • the pressure sensor 18 is provided in the gas supply line 5 (main supply line 5A) on the downstream side (that is, the filling nozzles 7A, 7B side) of the shutoff valve 13.
  • the pressure sensor 18 detects the pressure of hydrogen gas supplied from the gas accumulator 2 (that is, the pressure of the tank 32 to be filled or the pressure in the middle of the pipeline substantially corresponding to the pressure in the tank 32 to be filled).
  • the pressure sensor 18 measures the pressure in the gas supply pipe line 5 in the vicinity of the filling nozzles 7A and 7B, and outputs a detection signal corresponding to the measured pressure to the control device 24.
  • the temperature sensor 19 is located between the shutoff valve 13 and the pressure sensor 18 and is provided in the middle of the gas supply line 5 (main supply line 5A).
  • the temperature sensor 19 detects the temperature of the hydrogen gas flowing in the gas supply pipe 5, and outputs the detection result (detection signal) to the control device 24.
  • the arrangement relationship between the temperature sensor 19 and the pressure sensor 18 is not limited to the arrangement shown in FIG. 2, and may be, for example, opposite to each other. Further, for example, a temperature sensor 19 and a pressure sensor 18 may be provided in each of the first supply line 5B and the second supply line 5C, respectively.
  • the filling start switch 20 and the filling stop switch 21 are provided, for example, on the front side of the dispenser housing 4.
  • the filling start switch 20 and the filling stop switch 21 are switches that can be manually operated by, for example, an operator of a fuel supply station (hydrogen station).
  • the filling start switch 20 is operated when starting filling of hydrogen gas.
  • the filling stop switch 21 is operated when the filling of the gas is stopped during the filling of the hydrogen gas.
  • the filling start switch 20 and the filling stop switch 21 output signals according to the operating state to the control device 24, respectively. As a result, the control device 24 opens or closes the isolation valve 13 in response to these signals.
  • a decompression pipe 22 for depressurizing the gas pressure is provided branched from the filling hoses 6A and 6B. ..
  • a decompression valve 23 which is an electromagnetic or pneumatically operated valve device, is provided. The decompression valve 23 opens based on a signal from the control device 24 when the hydrogen gas filling operation using the filling hoses 6A and 6B (filling nozzles 7A and 7B) is completed and the isolation valve 13 is closed. The valve is controlled.
  • the decompression valve 23 is temporarily opened to open the tip end side of the decompression pipeline 22 to the atmosphere.
  • the hydrogen gas on the filling hoses 6A and 6B is discharged to the outside, and the pressure in the filling hoses 6A and 6B is reduced to the atmospheric pressure level.
  • the filling nozzles 7A and 7B can be removed from the filling port 32A of the tank to be filled 32.
  • the control device 24 constitutes a controller (control unit) that controls the flow rate adjusting valve 12, the isolation valve 13, the depressurizing valve 23, and the like.
  • the control device 24 controls the fuel supply to the tank to be filled 32 to be filled by controlling the flow rate adjusting valve 12 and the isolation valve 13. That is, the control device 24 constitutes a filling control means for controlling the supply of hydrogen gas to the filled tank 32 of the vehicle 31 by controlling the opening and closing of the flow rate adjusting valve 12 and the isolation valve 13, which are supply control valves.
  • the control device 24 includes, for example, a microcomputer including a CPU, a memory 24A, a timer, and the like. In the memory 24A of the control device 24, for example, a processing program for executing the processing flow shown in FIG. 6 described later, that is, a program for filling control processing and the like are stored.
  • a flow meter 17, a pressure sensor 18, a temperature sensor 19, a filling start switch 20, a filling stop switch 21, nozzle detectors 27A, 27B, limit switches 47, 47, etc. are connected to the input side of the control device 24.
  • the output side of the control device 24 is connected to the flow rate adjusting valve 12, the isolation valve 13, the depressurizing valve 23, the display unit 25, and the like.
  • the display unit 25 is provided on the front side of the dispenser housing 4.
  • the display unit 25 is arranged at a height position that is easily visible to the operator performing the hydrogen gas filling operation, and displays information necessary for the hydrogen gas filling operation.
  • the display unit 25 is composed of, for example, a liquid crystal monitor, a liquid crystal touch panel, or the like.
  • operation units such as a filling start switch 20 and a filling stop switch 21 are provided on the front surface side of the dispenser housing 4.
  • the nozzle hooks 26A and 26B are provided, for example, on the side surface side of the dispenser housing 4.
  • the first filling nozzle 7A is detachably hooked to the first nozzle hook 26A
  • the second filling nozzle 7B is detachably hooked to the second nozzle hook 26B.
  • the filling nozzles 7A and 7B are hooked to the nozzle hooks 26A and 26B when the hydrogen gas is not filled (that is, the waiting time for the filling work).
  • the filling nozzles 7A and 7B are removed from the nozzle hooks 26A and 26B by the filling work operator.
  • the nozzle hooks 26A and 26B correspond to a nozzle accommodating portion for accommodating the filling nozzles 7A and 7B on the side surface side of the dispenser housing 4.
  • Nozzle detectors 27A and 27B that detect whether or not the filling nozzles 7A and 7B are hooked on the nozzle hooks 26A and 26B (in other words, whether or not the filling nozzles 7A and 7B are housed in the nozzle accommodating portion). Is provided.
  • the nozzle detectors 27A and 27B are composed of, for example, a two-position switching type switch. The nozzle detectors 27A and 27B are connected to the control device 24.
  • the first nozzle detector 27A is pushed by the first filling nozzle 7A and switched to the ON state.
  • the first nozzle detector 27A switches to the OFF state when the first filling nozzle 7A is taken out (or removed) from the nozzle hook 26A.
  • the second nozzle detector 27B is switched to the ON state when, for example, the second filling nozzle 7B is hooked on the second nozzle hook 26B, and the second filling nozzle 7B is taken out from the second nozzle hook 26B. When it is turned on (or removed), it switches to the off state.
  • the nozzle detectors 27A and 27B output a detection signal (ON signal or OFF signal) corresponding to whether or not the filling nozzles 7A and 7B are hooked on the nozzle hooks 26A and 26B to the control device 24.
  • the nozzle detectors 27A and 27B are not limited to those provided on the nozzle hooks 26A and 26B on the dispenser housing 4 side, and may be provided on the filling nozzles 7A and 7B. In either case, the filling nozzles 7A and 7B are held by the nozzle hooks 26A and 26B of the dispenser unit 3 when the hydrogen gas is not filled (that is, the waiting time for the filling work). That is, when the filling operation of filling the filled tank 32 of the vehicle 31 with hydrogen gas is completed, the filling nozzles 7A and 7B are returned to the nozzle hooks 26A and 26B (held in the nozzle accommodating portion).
  • the vehicle 31 driven by running on hydrogen gas as fuel is composed of, for example, a four-wheeled vehicle (passenger car) as shown in FIG.
  • the vehicle 31 includes, for example, a drive device (not shown) including a fuel cell and an electric motor, a filled tank 32 shown by a dotted line in FIG. 1, and the like.
  • the filled tank 32 is configured as a container having a pressure-resistant structure filled with hydrogen gas, and is mounted on the rear side of the vehicle 31, for example.
  • the tank 32 to be filled is not limited to the rear side of the vehicle 31, but may be provided on the front side or the center side.
  • the filling tank 32 is provided with a filling port 32A (receptacle) to which the connection coupler of the filling nozzle 7A (7B) can be detachably attached.
  • the filled tank 32 of the vehicle 31 is filled with hydrogen gas in a state where the filling nozzle 7A (7B) is airtightly connected (connected) to the filling port 32A. At this time, the filling nozzle 7A (7B) is locked by the locking mechanism so as not to be inadvertently disengaged from the filling port 32A.
  • the flow rate adjusting valve 12 and the shutoff valve are used. It is not preferable that the valve 13 is opened and hydrogen gas is discharged from the filling nozzles 7A and 7B through the gas supply pipeline 5. Therefore, in order to prevent hydrogen gas from being discharged from the filling nozzles 7A and 7B during maintenance, a switching valve for switching the opening and closing of the gas supply pipeline 5 separately from the flow rate adjusting valve 12 and the isolation valve 13. It is conceivable to provide. For example, as shown in FIG. 2, it is conceivable to provide the first switching valve 41A in the first supply line 5B of the gas supply line 5 and to provide the second switching valve 41B in the second supply line 5C.
  • the switching valves 41A and 41B for example, it is conceivable to adopt an electromagnetic or pneumatically operated valve device, that is, an automatic valve that can be switched between opening and closing by the control device 24.
  • an automatic valve such as a solenoid valve is equipped with an actuator for opening and closing a valve, a large installation space is required and the cost of a single device may increase.
  • a manual valve for manually switching between opening and closing is adopted as the switching valves 41A and 41B, it can be installed in a small space and the cost can be reduced.
  • the switching valves 41A and 41B provided in the gas supply line 5 (first supply line 5B, second supply line 5C) to the filling hoses 6A and 6B are used as manual valves.
  • the embodiment includes a mechanism for visually confirming the open / closed state of the switching valves 41A and 41B and a mechanism for detecting the opened / closed state of the switching valves 41A and 41B. That is, as shown in FIG. 2, the gas supply pipeline 5 is provided with switching valves 41A and 41B located on the downstream side of the supply control valves (flow rate adjusting valve 12, shutoff valve 13). The switching valves 41A and 41B switch the open / closed state in the gas supply line 5 (first supply line 5B, second supply line 5C).
  • the gas supply line 5 which is a gas supply path includes a first supply line 5B and a second supply line 5C which are a plurality of paths.
  • the switching valves 41A and 41B are provided in a plurality of paths, that is, in the first supply line 5B and the second supply line 5C, respectively.
  • the positions of the switching valves 41A and 41B may be provided on the upstream side of the supply control valve (flow rate adjusting valve 12, shutoff valve 13).
  • the switching valves 41A and 41B are manual switching valves that can be switched manually, more specifically, needle valves.
  • the valve opening amount of the switching valves 41A and 41B changes when the built-in valve body (needle) is displaced up and down by the handle 42. That is, the switching valves 41A and 41B are in the closed position (blocking position) where the flow of hydrogen gas is blocked by lowering the valve body built in by the rotation of the handle 42, and the valve body is raised by the rotation of the handle 42. As a result, it becomes an open position (communication position) where hydrogen gas flows.
  • the switching valves 41A and 41B are provided with a lever portion 46 as a display unit for displaying the switching state (opening / closing state) of the switching valves 41A and 41B. More specifically, the switching valves 41A and 41B are adjacent to the switching state display detecting mechanisms 43 and 43 for displaying the switching state of the switching valves 41A and 41B and detecting the switching state.
  • the open / close state display detection mechanisms 43 and 43 and the switching valves 41A and 41B are separate bodies (separate members and separate parts), but the open / close state display detection mechanisms 43 and 43 and the switching valves 41A and 41B are separated from each other. And may be integrally configured. That is, as shown in FIGS.
  • the open / close state display detection mechanism 43 and the switching valve 41A (41B) are separately fixed to the installation surface, but for example, the open / close state display detection is performed.
  • the open / close state display detection mechanism 43 may be provided integrally with the switching valve 41A (41B).
  • the open / close state display detection mechanism 43 includes a lever mounting bracket 44, a lever support portion 45, and a lever portion 46. Further, the open / closed state display detection mechanism 43 further includes a limit switch 47 as a detection means.
  • the lever mounting bracket 44 is a base frame of the open / closed state display detection mechanism 43.
  • the lever mounting bracket 44 is formed by, for example, bending a metal plate body, and includes a fixing plate portion 44A, a rising plate portion 44B, and a support plate portion 44C.
  • the fixing plate portion 44A is attached to the installation surface.
  • the rising plate portion 44B extends upward from the fixed plate portion 44A, and a limit switch 47 is attached to the rising plate portion 44B.
  • the support plate portion 44C extends in the horizontal direction from the upper end side of the rising plate portion 44B, and the lever support portion 45 is attached to the support plate portion 44C.
  • the lever support portion 45 rotatably supports the lever portion 46 with respect to the lever mounting bracket 44. That is, as shown in FIGS. 3 and 4, the lever support portion 45 rotatably supports the lever portion 46 with respect to the lever mounting bracket 44 about a vertical axis extending in the vertical direction.
  • the base end side of the lever portion 46 is rotatably supported by the support plate portion 44C of the lever mounting bracket 44 via the lever support portion 45.
  • the lever portion 46 can switch the display of the switching state according to the operation of the switching valve 41A (41B). That is, the lever portion 46 corresponds to a display unit (valve closed display unit) for displaying that the switching state of the switching valve 41A (41B) is closed (valve closed). In other words, the display unit that displays the switching state of the switching valve 41A (41B) corresponds to the position corresponding to the display of closing when the switching valve 41A (41B) is closed (in FIG. 3 and FIG. 4B).
  • the lever portion 46 as a cover portion that can be moved to the position). In this case, the lever portion 46 can move to the upper side of the handle 42 of the switching valve 41A (41B) when the switching valve 41A (41B) is closed.
  • the switching valve 41A (41B) is opened when the valve is opened, that is, when the staff member turns the handle 42 clockwise or counterclockwise to raise the handle 42. It shows the case where it is in a state.
  • the lever portion 46 is at a position (valve opening position) away from the handle 42. That is, in this case, even if the lever portion 46 is turned toward the handle 42 side, the lever portion 46 interferes with the handle 42, so that the lever portion 46 cannot be positioned above the handle 42.
  • FIGS. 3 and 4B when the valve is closed, that is, the staff turns the handle 42 counterclockwise or clockwise to lower the handle 42, thereby lowering the switching valve 41A (41B).
  • the lever portion 46 can be positioned above the handle 42. That is, in this case, as shown in FIG. 4B, the handle 42 is below the height position of the lever portion 46. Therefore, when the lever portion 46 is rotated toward the handle 42 from the position shown in FIGS. 3 and 4 (A) about the vertical axis of the lever support portion 45, the lever portion 46 interferes with the handle 42. Instead, the lever portion 46 can be positioned on the handle 42.
  • the clerk can rotate the lever portion 46 from the position shown in (A) of FIGS. 3 and 4 to the position shown in (B). Thereby, the clerk can determine whether the switching valve 41A (41B) is closed or opened by whether or not the lever portion 46 can be rotated toward the handle 42 side. .. Further, when the lever portion 46 is located on the handle 42, the clerk can easily visually determine that the switching valve 41A (41B) is closed.
  • the lever portion 46 has a grip plate portion 46A extending in the horizontal direction and a claw-shaped switch contact portion 46B extending downward from the grip plate portion 46A. ..
  • the switching valve 41A (41B) is closed, in other words, when the handle 42 is in the lowest position, the grip plate portion 46A is located on the upper side and the center portion of the handle 42 by the rotation operation of the staff. Can be located in. That is, the grip plate portion 46A of the lever portion 46 can be rotated to a position on the upper side of the handle 42 (valve closed position) and a position away from the handle 42 (valve open position) by a staff member.
  • the switch contact portion 46B contacts the pressing portion 47A of the limit switch 47 provided on the lever mounting bracket 44 when the lever portion 46 (grip plate portion 46A) is in the valve closed position, and switches the limit switch 47 to the ON position. be able to.
  • the limit switch 47 detects the position of the lever portion 46.
  • the limit switch 47 includes a contact (not shown) and a pressing portion 47A for switching the contact.
  • the pressing portion 47A is pressed against the switch contact portion 46B of the lever portion 46 when the lever portion 46 is in the valve closed position. That is, when the pressing portion 47A is pressed downward by contacting the switch contact portion 46B, the limit switch 47 switches from the OFF position to the ON position.
  • the limit switch 47 detects the position of the lever portion 46 and, by extension, the switching state (whether or not the valve is closed) of the switching valve 41A (41B).
  • the limit switch 47 is connected to the control device 24, and when it is in the ON position, the ON signal indicating that the lever portion 46 is located above the handle 42, in other words, the switching valve 41A (41B) is closed. An ON signal indicating that the valve is being valved is output to the control device 24. Thereby, the control device 24 can determine whether the switching valves 41A and 41B are open or closed.
  • the control device 24 controls the opening / closing of the flow rate adjusting valve 12 and / or the shutoff valve 13, which are supply control valves, in response to the detection of the limit switch 47.
  • the control by the control device 24, that is, the hydrogen gas filling control process shown in FIG. 6 will be described in detail later.
  • the limit switches 47 and 47 are provided in the vicinity of the switching valves 41A and 41B. Then, as shown in FIGS. 3 and 4B, the limit switch 47 is turned on by moving the lever portion 46 toward the handle 42 of the switching valve 41A (41B). The lever portion 46 can be rotated only when the handle 42 of the switching valve 41A (41B) is in the lowest position at the closed position. That is, when the handle 42 of the switching valve 41A (41B) is operated to close the switching valve 41A (41B), the grip plate portion 46A of the lever portion 46 rotates to a position above the handle 42. Can be made to.
  • the limit switch 47 can be operated by the switch contact portion 46B of the lever portion 46.
  • the handle 42 of the switching valve 41A (41B) is not in the closed position at the lowest position, the position of the handle 42 interferes with the grip plate portion 46A of the lever portion 46, so that the limit switch is used.
  • the lever portion 46 (switch contact portion 46B) cannot be moved (rotated) to the position where the 47 is operated.
  • the hydrogen gas filling device 1 has the above-mentioned configuration, and next, the hydrogen gas filling operation by the hydrogen gas filling device 1 will be described.
  • the operator performing the filling operation attaches the first filling nozzle 7A (or the second filling nozzle 7B) to the first nozzle hook 26A (or the second nozzle hook 26B). ) To remove it.
  • the first filling nozzle 7A or the second filling nozzle 7B
  • the second filling nozzle 7B the case where hydrogen gas is filled by the first filling nozzle 7A will be described, but the same applies to the second filling nozzle 7B.
  • the first filling nozzle 7A is connected to the filling port 32A of the tank to be filled 32, and the connection portion is locked.
  • the control device 24 outputs a valve opening signal to the flow rate adjusting valve 12 and the shutoff valve 13 to open the flow rate adjusting valve 12 and the shutoff valve 13.
  • the hydrogen gas in the gas accumulator 2 is filled in the vehicle 31 through the gas supply line 5 (main supply line 5A, first supply line 5B), the first filling hose 6A, and the first filling nozzle 7A.
  • the tank 32 is filled.
  • the control device 24 monitors, for example, the measurement results of the flow meter 17, the pressure sensor 18, and the temperature sensor 19, and controls the opening degree of the flow rate adjusting valve 12 in advance (constant pressure rise control method or constant flow control method). ) Etc. Thereby, the pressure and the flow rate of the hydrogen gas supplied in the gas supply pipe 5 can be controlled to an appropriate distribution state.
  • the control device 24 integrates the flow rate pulse from the flow meter 17 to calculate the hydrogen gas filling amount (mass), and the hydrogen gas filling amount reaches a preset target filling amount or the pressure. It is determined whether or not the pressure of the hydrogen gas detected by the sensor 18 has reached a preset target filling pressure (target filling pressure). When it is determined that the target filling amount (pressure) has been reached, the flow rate adjusting valve 12 and the isolation valve 13 are closed by the signal from the control device 24, and the filling of the filled tank 32 with hydrogen gas is completed. .. The filling operation is also completed when the operator operates the filling stop switch 21.
  • the control device 24 executes the filling end control process.
  • the decompression valve 23 is controlled to be opened from the closed state by a signal from the control device 24. Then, when the decompression valve 23 is opened, the decompression pipeline 22 is opened to the atmosphere, so that the gas on the filling nozzles 7A and 7B sides is discharged to the outside, and the pressure of the first filling nozzle 7A becomes the atmospheric pressure level. It is depressurized. In this state, the operator can remove the connecting coupler of the first filling nozzle 7A from the filling port 32A of the tank 32 to be filled.
  • the first filling nozzle 7A removed from the filling port 32A of the tank 32 to be filled is returned to the first nozzle hook 26A on the dispenser housing 4 side by the operator, and is hooked by a manual operation.
  • the first nozzle detector 27A provided on the first nozzle hook 26A detects whether or not the first filling nozzle 7A has been returned to the first nozzle hook 26A.
  • the detection signal from the first nozzle detector 27A is output to the control device 24.
  • the control device 24 determines that the filling work by the first filling nozzle 7A has been completed, and is in a standby state for the next filling work.
  • the staff member closes the first switching valve 41A or the second switching valve 41B as necessary.
  • the staff member performs maintenance on the first supply pipe line 5B, the first filling hose 6A, the first filling nozzle 7A, the first emergency disconnection coupling 8A, the first nozzle hook 26A, and the like, and the first switching valve 41A.
  • the handle 42 is rotated in the direction in which the handle 42 is lowered, and the first switching valve 41A is closed.
  • the clerk rotates the lever portion 46 of the open / close state display detection mechanism 43 on the first switching valve 41A side to the positions shown in FIGS. 3 and 4B.
  • the staff member can visually grasp that the first switching valve 41A is closed. Further, the pressing portion 47A of the limit switch 47 is pressed downward by the switch contact portion 46B of the lever portion 46. As a result, the ON signal is output from the limit switch 47 to the control device 24. The control device 24 can determine that the first switching valve 41A is in the closed state by the ON signal from the limit switch 47.
  • the staff member when performing maintenance on the second supply pipe line 5C, the second filling hose 6B, the second filling nozzle 7B, the second emergency disconnection coupling 8B, the second nozzle hook 26B, etc., the staff member is in charge of the second switching valve.
  • the handle 42 of the 41B is rotated in the direction in which the handle 42 is lowered, and the second switching valve 41B is closed.
  • the clerk rotates the lever portion 46 of the open / close state display detection mechanism 43 on the second switching valve 41B side to the positions shown in FIGS. 3 and 4B. As a result, the staff member can visually grasp that the second switching valve 41B is closed.
  • the pressing portion 47A of the limit switch 47 is pressed downward by the switch contact portion 46B of the lever portion 46.
  • the ON signal is output from the limit switch 47 to the control device 24.
  • the control device 24 can determine that the second switching valve 41B is in the closed state by the ON signal from the limit switch 47.
  • control process hydrogen gas filling control process
  • the control process of FIG. 6 is repeatedly executed, for example, in a predetermined control cycle (for example, 10 ms) while the control device 24 is energized.
  • the control device 24 determines in S1 whether or not the filling nozzles 7A and 7B have been removed from the nozzle hooks 26A and 26B. This determination can be made by the detection signals (ON signal or OFF signal) of the nozzle detectors 27A and 27B. If it is determined in S1 that "NO", that is, the filling nozzles 7A and 7B are not removed from the nozzle hooks 26A and 26B, the process of S1 is repeated. In this case, it is a standby state before the filling operation is started, and waits for the filling nozzles 7A and 7B to be removed from the nozzle hooks 26A and 26B. On the other hand, if "YES” in S1, that is, it is determined that the filling nozzle 7A (or filling nozzle 7B) has been removed from the nozzle hook 26A (or nozzle hook 26B), the process proceeds to S2.
  • S2 it is determined whether or not the switching valve 41A (or 41B) on the filling nozzle 7A (or 7B) side removed from the nozzle hook 26A (or 26B) is "open". This determination can be made from the signals of the nozzle detectors 27A and 27B and the signals of the limit switches 47 and 47. In this case, for example, when the ON signal is not input from the limit switch 47, the control device 24 determines that the switching valve 41A (or 41B) on the side where the limit switch 47 is provided is "open". be able to.
  • S4 a filling control process is performed. That is, in S4, when the filling start switch 20 is turned on, the flow rate adjusting valve 12 and the isolation valve 13 are opened, and the filled tank 32 is filled with hydrogen gas from inside the gas accumulator 2.
  • the control device 24 adjusts the opening degree of the flow rate adjusting valve 12 and the like by a preset control method while monitoring the measurement results of the flow meter 17, the pressure sensor 18, and the temperature sensor 19, for example. As a result, the pressure and flow rate of the hydrogen gas supplied in the gas supply pipe 5 are controlled to an appropriate distribution state.
  • S5 it is determined whether or not the filling of hydrogen gas is completed. Specifically, it is determined whether or not the filling amount or filling pressure of hydrogen gas has reached a preset target value. If it is determined in S5 that "NO", that is, the filling amount or filling pressure of hydrogen gas does not reach the preset target value, the process of S5 is repeated. In this case, the filling of the filled tank 32 with hydrogen gas is continued. On the other hand, when it is determined in S5 that "YES”, that is, the filling amount or filling pressure of the hydrogen gas has reached a preset target value, the filling of the hydrogen gas is terminated. That is, the flow rate adjusting valve 12 and the isolation valve 13 are closed, and the process proceeds to S6. Even when the operator operates the filling stop switch 21, "YES" is determined in S5 and the process proceeds to S6.
  • the filling end control process is performed.
  • the decompression valve 23 is opened from the closed state.
  • the decompression pipeline 22 is opened to the atmosphere, hydrogen gas on the filling nozzles 7A and 7B is discharged to the outside, and the pressure of the filling nozzle 7A (or 7B) is reduced to atmospheric pressure.
  • the control device 24 states that "the filling nozzle 7A (7B) has been removed from the nozzle hook 26A (26B) by the signal from the nozzle detector 27A (27B)" and "from the limit switch 47".
  • the switching valve 41A (41B) provided in the supply line 5B (5C) to which the filling nozzle 7A (7B) is connected is open. "
  • the control device 24 determines that the filling nozzle 7A (7B) is disconnected and the switching valve 41A (41B) of the supply pipe line 5B (5C) of the filling nozzle 7A (7B) is open. , The filling nozzle 7A (7B) is allowed to fill.
  • the control device 24 is a switching valve of the supply pipe line 5B (5C) of the filling nozzle 7A (7B) in which the filling nozzle 7A (7B) is not disengaged or is removed from the nozzle hook 26A (26B). If it is determined that 41A (41B) is not open, filling is prohibited. In this case, the control device 24 displays an alarm on the display unit 25 of the dispenser unit 3, for example, a display indicating that the filling nozzle 7A (7B) is not fillable, or a display indicating that the switching valve 41A (41B) is closed. I do. If it is determined that both the switching valve 41A and the switching valve 41B are open, filling is prohibited.
  • the switching valve 41A (or 41B) on the filling nozzle 7A (or 7B) side that has been removed is "opened” by the signals of the nozzle detectors 27A and 27B and the signals of the limit switches 47 and 47. It is determined whether or not it is.
  • the filling nozzle 7A (or 7B) for filling is selected (designated) by operating the operation panel, operation switch, etc. provided on the dispenser unit 3 before the filling operator starts filling. ).
  • the determination of S2 in FIG. 6 can be performed based on the selection information (designated information) and the signals of the limit switches 47 and 47.
  • the staff member can use the display unit (lever unit 46) during maintenance. ), That is, the open / closed state of the switching valves 41A and 41B, that is, the communication and shutoff states of the gas supply line 5 (first supply line 5B, second supply line 5C) by the switching valves 41A and 41B. Can be grasped.
  • the switching valves 41A and 41B are manual switching valves, and the display unit (lever unit 46) switches the display of the switching state according to the operation of the switching valves 41A and 41B (position of the handle 42). It is possible. Therefore, the open / closed state of the switching valves 41A and 41B can be easily grasped by the display unit (lever unit 46).
  • the display unit is provided with a lever unit 46 that can be moved to a position corresponding to the display of closure when the switching valves 41A and 41B are closed. Therefore, it is possible to easily grasp whether or not the switching valves 41A and 41B are closed depending on whether or not the lever portion 46 has moved to the position corresponding to the indication of closing.
  • the lever portion 46 can move to the upper side of the handle 42 of the switching valves 41A and 41B when the switching valves 41A and 41B are closed. Therefore, it is possible to easily grasp whether or not the switching valves 41A and 41B are closed depending on whether or not the lever portion 46 is moved above the handle 42 of the switching valves 41A and 41B.
  • a limit switch 47 is further provided as a detection means for detecting the position of the lever portion 46.
  • the control device 24 serving as the filling control means controls the opening and closing of the flow rate adjusting valve 12 and the shutoff valve 13 serving as the supply control valve in response to the detection of the limit switch 47. Therefore, the control device 24 can control the opening and closing of the flow rate adjusting valve 12 and the isolation valve 13 in response to the detection of the limit switch 47 that detects the position of the lever portion 46. Therefore, for example, when the switching valves 41A and 41B are closed, it is possible to prevent the flow rate adjusting valve 12 and the isolation valve 13 from opening.
  • a case where the nozzle hooks 26A and 26B (accommodating portions for accommodating the filling nozzles 7A and 7B) on which the filling nozzles 7A and 7B are hung is provided on the left side of the dispenser housing 4 has been described as an example.
  • the present invention is not limited to this, and for example, the nozzle hook (accommodation portion) may be provided on the right side of the dispenser housing, or may be provided at a position other than this (for example, the front surface). Further, a nozzle hook (accommodation portion) may be separately provided in the vicinity of the dispenser housing. Further, the first nozzle hook and the second nozzle hook may be provided on different side surfaces of the dispenser housing, respectively.
  • the filled tank 32 of the vehicle 31 is filled with compressed hydrogen gas
  • the present invention is not limited to this, and for example, it can be used when filling a tank to be filled (tank, container, etc.) other than a vehicle with hydrogen gas.
  • the dispenser unit 3 of the hydrogen gas filling device 1 may be installed in the middle of a pipeline (hydrogen supply pipeline) for supplying hydrogen gas to another place.
  • hydrogen gas has been described as an example as the fuel gas
  • a configuration (gas filling device) using a fuel gas other than hydrogen gas such as natural gas (NG) and propane gas (LPG) may be used.
  • the switching valves 41A and 41B are used as manual switching valves.
  • the switching valve for example, an automatic switching valve such as a solenoid valve whose opening and closing can be controlled by a control device may be used.
  • the automatic switching valve may be provided with, for example, a display unit that displays the switching state (for example, "open”, "closed") according to the switching state (switching position) of the automatic switching valve.
  • the display is not limited to "open” and "closed”, and may be hidden, for example, when “switching", "not switched", or in a non-switched state (closed state).
  • the lever portion 46 serving as the cover portion is configured to be movable above the handle 42 of the switching valves 41A and 41B when the switching valves 41A and 41B are closed has been described as an example.
  • the cover portion (lever portion) may be configured to be movable under the handle.
  • the handle of the switching valve may be configured to be displaced upward when the valve is closed.
  • the cover portion (lever portion) can be configured to be movable to the lower side of the handle displaced upward.
  • the cover portion (lever portion) may be provided with a notch portion into which the shaft of the handle enters, if necessary. Further, the cover portion (lever portion) can be set to a length protruding from the handle.
  • the case where the limit switch 47 is used as the detection means has been described as an example.
  • the present invention is not limited to this, and for example, a position sensor, a potentiometer, or the like that detects the position of the handle may be used as the detection means.
  • the detection means and / or the display unit may be configured to be built in the switching valve. Further, the detection means may be omitted.
  • the gas supply line 5 which is a gas supply path includes a first supply line 5B and a second supply line 5C which are a plurality of gas supply paths, and the first supply line 5B and the like.
  • the case where the switching valves 41A and 41B are provided in each of the second supply line 5C and the second supply line 5C has been described as an example.
  • the present invention is not limited to this, and for example, one switching valve may be provided in one gas supply path. Further, for example, a switching valve may be provided in each of the three or more gas supply paths.
  • the gas filling device based on the embodiment described above, for example, the one described below can be considered.
  • a gas supply path in which the upstream side is connected to the accumulator in which the fuel gas is accumulated and a filling in which the gas supply path is connected to the downstream side and connected to the filled tank mounted on the vehicle.
  • the cover is provided by controlling the opening and closing of the nozzle, the supply control valve provided in the middle of the gas supply path and supplying the fuel gas in the accumulator to the filling nozzle by opening the valve, and the supply control valve.
  • a gas filling device configured to include a filling control means for controlling the supply of the fuel gas to the filling tank, a switching valve provided in the gas supply path and switching an open / closed state in the gas supply path.
  • the switching valve is provided with a display unit for displaying the switching state of the switching valve.
  • the staff member can visually check the display unit to open / close the switching valve (that is, that is, when performing maintenance). It is possible to grasp the communication and cutoff state of the gas supply path by the switching valve.
  • the switching valve is a manual switching valve that can be manually switched, and the display unit can switch the display according to the operation of the manual switching valve.
  • the open / closed state of the manual switching valve can be easily grasped by the display unit capable of switching the display of the switching state according to the operation of the manual switching valve.
  • the display unit is a cover unit that can be moved to a position corresponding to the display of closure when the manual switching valve is closed. According to this third aspect, it is possible to easily grasp whether or not the manual switching valve is closed depending on whether or not the cover portion has moved to the position corresponding to the indication of closing.
  • the cover portion can be moved to the upper side or the lower side of the handle of the manual switching valve when the manual switching valve is closed. According to this fourth aspect, it is possible to easily grasp whether or not the manual switching valve is closed depending on whether or not the cover portion is moved to the upper side or the lower side of the handle of the manual switching valve.
  • the detection means for detecting the position of the cover portion is further provided, and the filling control means is the supply control valve in response to the detection of the detection means. Open / close control.
  • the filling control means can control the opening and closing of the supply control valve according to the detection of the detection means for detecting the position of the cover portion. Therefore, for example, when the manual switching valve is closed, it is possible to prevent the supply control valve from opening.
  • the gas supply path includes a plurality of paths, and the switching valve is provided in each of the plurality of paths.
  • the staff member grasps the open / closed state (that is, the communication / shutoff state of the plurality of paths) of the plurality of switching valves provided in each of the plurality of paths. Can be done.
  • the present invention is not limited to the above-described embodiments and includes various modifications.
  • the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. Further, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

A control device (24) controls the supply of hydrogen gas to a filling tank (32) in a vehicle (31) by controlling the opening and closing of a flow rate adjustment valve (12) and a shutoff valve (13). Switch valves (41A, 41B) are provided to a gas supply pipe (5) positioned further downstream than the flow rate adjustment valve (12) and the shutoff valve (13). An open/closed state indication detecting mechanism (43), which comprises a lever part (46) for indicating the switching state (open/closed state) of the switch valves (41A, 41B), is provided so as to leave/contact the switch valves (41A, 41B). The lever part (46) can be moved to a position corresponding to an indication of being closed when the switch valves (41A, 41B) are closed.

Description

ガス充填装置Gas filling device
　本開示は、例えば車両の被充填タンクに水素ガス等の燃料ガスを充填するガス充填装置に関する。 The present disclosure relates to a gas filling device that fills a filled tank of a vehicle with a fuel gas such as hydrogen gas, for example.
　例えば、特許文献１には、高圧状態の水素ガスを燃料電池自動車等の車両に搭載された被充填タンク（燃料タンク）に充填する水素ガス充填装置が記載されている。特許文献１の水素ガス充填装置は、予め水素ガスが蓄圧されている蓄圧器とガス供給経路を介して接続され、水素ガスを被充填タンクに充填するための充填ノズルと、充填ノズルを保持するための保持部と、ガス供給経路に設けられ、開弁することにより蓄圧器内の水素ガスを充填ノズルに供給する開閉弁と、開閉弁を開閉可能に制御することにより、被充填タンクへの水素ガスの供給を制御する充填制御手段と、を備えている。 For example, Patent Document 1 describes a hydrogen gas filling device that fills a filled tank (fuel tank) mounted on a vehicle such as a fuel cell vehicle with hydrogen gas in a high pressure state. The hydrogen gas filling device of Patent Document 1 is connected to a pressure accumulator in which hydrogen gas is stored in advance via a gas supply path, and holds a filling nozzle for filling the filled tank with hydrogen gas and a filling nozzle. A holding part for this purpose, an on-off valve that is provided in the gas supply path and supplies hydrogen gas in the accumulator to the filling nozzle by opening the valve, and an on-off valve that can be opened and closed to open and close the tank to be filled. It is provided with a filling control means for controlling the supply of hydrogen gas.
特開２０１７－４４３０４号公報Japanese Unexamined Patent Publication No. 2017-443304
　水素ガスを含む燃料ガスの充填装置は、性能を維持するために、ガス供給経路や充填ノズルのメンテナンスが必要になる。ここで、メンテナンスを行っているときに、誤って燃料ガスの充填開始操作がなされた場合に、開閉弁が開弁し、ガス供給経路を通じて充填ノズルから燃料ガスが吐出されてしまうことは好ましくない。そこで、メンテナンス中に充填ノズルから燃料ガスが吐出されてしまうことを防止するために、開閉弁とは別に、ガス供給経路内の開閉を切換えるための切換弁を設けることが考えられる。しかし、この場合に、単に切換弁を設けるだけでは、メンテナンスを行う係員が目視により切換弁の開閉状態を把握できない可能性がある。 A fuel gas filling device containing hydrogen gas requires maintenance of the gas supply path and filling nozzle in order to maintain its performance. Here, it is not preferable that the on-off valve opens and the fuel gas is discharged from the filling nozzle through the gas supply path when the fuel gas filling start operation is mistakenly performed during maintenance. .. Therefore, in order to prevent the fuel gas from being discharged from the filling nozzle during maintenance, it is conceivable to provide a switching valve for switching the opening and closing in the gas supply path in addition to the on-off valve. However, in this case, if the switching valve is simply provided, the maintenance staff may not be able to visually grasp the open / closed state of the switching valve.
　本発明の一実施形態の目的は、メンテナンスを行う係員が目視により切換弁の開閉状態を把握することができるガス充填装置を提供することにある。 An object of the embodiment of the present invention is to provide a gas filling device capable of visually grasping the open / closed state of a switching valve by a person in charge of maintenance.
　本発明の一実施形態は、燃料ガスが蓄圧された蓄圧器に上流側が接続されたガス供給経路と、前記ガス供給経路の下流側に接続され、車両に搭載された被充填タンクに連結される充填ノズルと、前記ガス供給経路の途中に設けられ、開弁することにより前記蓄圧器内の燃料ガスを前記充填ノズルへ供給する供給制御弁と、前記供給制御弁を開閉制御することにより、前記被充填タンクへの前記燃料ガスの供給を制御する充填制御手段と、を含んで構成されたガス充填装置において、前記ガス供給経路に設けられ、前記ガス供給経路内の開閉状態を切換える切換弁と、前記切換弁に設けられ、前記切換弁の切換え状態を表示する表示部と、を備える。 In one embodiment of the present invention, a gas supply path to which the upstream side is connected to a pressure accumulator in which fuel gas is accumulated and a gas supply path connected to the downstream side of the gas supply path are connected to a filled tank mounted on a vehicle. The filling nozzle, a supply control valve provided in the middle of the gas supply path and supplying fuel gas in the accumulator to the filling nozzle by opening the valve, and the supply control valve are controlled to open and close. In a gas filling device configured to include a filling control means for controlling the supply of the fuel gas to the tank to be filled, a switching valve provided in the gas supply path and switching an open / closed state in the gas supply path. , The switching valve is provided with a display unit for displaying the switching state of the switching valve.
　本発明の一実施形態によれば、メンテナンスを行う係員が目視により切換弁の開閉状態を把握することができる。 According to one embodiment of the present invention, the person in charge of maintenance can visually grasp the open / closed state of the switching valve.
実施形態によるガス充填装置を用いて車両の被充填タンクに燃料ガスを充填している状態を示す平面図である。It is a top view which shows the state which the fuel gas is filled in the filled tank of a vehicle by using the gas filling device by embodiment. 図１中のガス充填装置を模式的に示す構成図である。It is a block diagram which shows typically the gas filling apparatus in FIG. 切換弁、表示部等を開弁時と閉弁時とでそれぞれ示す平面図である。It is a top view which shows the switching valve, the display part, etc. at the time of opening a valve and at the time of closing a valve, respectively. 切換弁、表示部等を開弁時と閉弁時とでそれぞれ示す側面図である。It is a side view which shows the switching valve, a display part, etc. at the time of opening a valve and at the time of closing a valve, respectively. 表示部を単体で示す斜視図である。It is a perspective view which shows the display part alone. 図２中の制御装置により行われる処理を示す流れ図である。It is a flow chart which shows the process performed by the control device in FIG.
　以下、実施形態によるガス充填装置として、車両の被充填タンクに水素ガスを充填する車両用の水素ガス充填装置を例に挙げ、添付図面に従って説明する。なお、図６に示す流れ図の各ステップは、それぞれ「Ｓ」という表記を用いる（例えば、ステップ１＝「Ｓ１」とする）。 Hereinafter, as a gas filling device according to an embodiment, a hydrogen gas filling device for a vehicle that fills a filled tank of a vehicle with hydrogen gas will be taken as an example, and will be described with reference to the attached drawings. In addition, each step of the flow chart shown in FIG. 6 uses the notation "S" (for example, step 1 = "S1").
　図１および図２において、水素ガス充填装置１は、例えば燃料電池自動車等の車両３１の燃料タンクとなる被充填タンク３２に、圧縮状態の水素ガス（燃料ガス）を充填する。車両用の水素ガス充填装置１は、例えば、水素ガス供給ステーションと呼ばれる設備（燃料供給所）に設置されている。水素ガス充填装置１は、高圧に圧縮された水素ガスを蓄圧するガス蓄圧器２と、ガス蓄圧器２からの水素ガスを車両３１の被充填タンク３２に充填する充填機構としてのディスペンサユニット３と、ガス蓄圧器２からディスペンサユニット３のディスペンサ筐体４内にわたって延びるガス供給管路５とを含んで構成されている。 In FIGS. 1 and 2, the hydrogen gas filling device 1 fills a filled tank 32, which is a fuel tank of a vehicle 31 such as a fuel cell vehicle, with hydrogen gas (fuel gas) in a compressed state. The hydrogen gas filling device 1 for a vehicle is installed in, for example, a facility (fuel supply station) called a hydrogen gas supply station. The hydrogen gas filling device 1 includes a gas accumulator 2 for accumulating hydrogen gas compressed to a high pressure, and a dispenser unit 3 as a filling mechanism for filling the filled tank 32 of the vehicle 31 with hydrogen gas from the gas accumulator 2. , A gas supply pipeline 5 extending from the gas accumulator 2 to the inside of the dispenser housing 4 of the dispenser unit 3 is included.
　ガス蓄圧器２は、高圧に圧縮された水素ガスを貯蔵する水素ガスの供給源である。即ち、蓄圧器としてのガス蓄圧器２には、燃料ガスとなる水素ガスが蓄圧されている。ガス蓄圧器２は、ディスペンサユニット３に接続されている。ガス蓄圧器２は、ガス供給管路５の上流側で、高圧に圧縮された水素ガスを貯蔵するガス貯蔵部を構成している。ディスペンサユニット３は、ディスペンサ筐体４、充填ホース６Ａ，６Ｂ、充填ノズル７Ａ，７Ｂ、流量調整弁１２、遮断弁１３、熱交換器１６、流量計１７、圧力センサ１８、温度センサ１９、充填開始スイッチ２０、充填停止スイッチ２１、脱圧弁２３、制御装置２４、ノズル掛け２６Ａ，２６Ｂを含んで構成されている。 The gas accumulator 2 is a hydrogen gas supply source that stores hydrogen gas compressed to a high pressure. That is, hydrogen gas as a fuel gas is accumulated in the gas accumulator 2 as the accumulator. The gas accumulator 2 is connected to the dispenser unit 3. The gas accumulator 2 constitutes a gas storage unit for storing hydrogen gas compressed at high pressure on the upstream side of the gas supply pipeline 5. The dispenser unit 3 includes a dispenser housing 4, filling hoses 6A, 6B, filling nozzles 7A, 7B, flow rate adjusting valve 12, shutoff valve 13, heat exchanger 16, flow meter 17, pressure sensor 18, temperature sensor 19, and filling start. It includes a switch 20, a filling stop switch 21, a decompression valve 23, a control device 24, and nozzle hooks 26A and 26B.
　ディスペンサ筐体４は、ディスペンサユニット３の外形をなす建屋を構成するもので、例えば上，下方向に長尺な直方体状に形成されている。図２に示すように、ディスペンサ筐体４内には、ガス供給管路５、流量調整弁１２、遮断弁１３、熱交換器１６、圧力センサ１８、温度センサ１９、制御装置２４等が収容されている。ディスペンサ筐体４には、水素ガスの充填作業を行う作業者（係員）または利用者（顧客）が視認し易い位置に、液晶モニタ、液晶タッチパネル等の表示部２５が設けられている。 The dispenser housing 4 constitutes a building that forms the outer shape of the dispenser unit 3, and is formed in a rectangular parallelepiped shape that is long in the upward and downward directions, for example. As shown in FIG. 2, a gas supply pipe line 5, a flow control valve 12, a isolation valve 13, a heat exchanger 16, a pressure sensor 18, a temperature sensor 19, a control device 24, and the like are housed in the dispenser housing 4. ing. The dispenser housing 4 is provided with a display unit 25 such as a liquid crystal monitor and a liquid crystal touch panel at a position easily visible to a worker (staff) or a user (customer) who performs a hydrogen gas filling operation.
　ディスペンサ筐体４の外部には、第１充填ノズル７Ａが取外し可能に掛止めされる第１ノズル掛け２６Ａと、第２充填ノズル７Ｂが取外し可能に掛止めされる第２ノズル掛け２６Ｂとが設けられている。ノズル掛け２６Ａ，２６Ｂは、充填ノズル７Ａ，７Ｂを保持する保持部に相当する。なお、実施形態では、１つのディスペンサユニット３に複数（より具体的には２つ）の充填ノズル７Ａ，７Ｂを有する構成を例に挙げて説明するが、例えば、１つのディスペンサユニットに１つの充填ノズルを有する構成としてもよい。また、例えば、１つのディスペンサユニットに３つ以上の充填ノズルを有する構成としてもよい。 On the outside of the dispenser housing 4, a first nozzle hook 26A to which the first filling nozzle 7A is detachably hooked and a second nozzle hook 26B to which the second filling nozzle 7B is detachably hooked are provided. Has been done. The nozzle hooks 26A and 26B correspond to holding portions for holding the filling nozzles 7A and 7B. In the embodiment, a configuration having a plurality of (more specifically, two) filling nozzles 7A and 7B in one dispenser unit 3 will be described as an example, but for example, one filling in one dispenser unit will be described. It may be configured to have a nozzle. Further, for example, one dispenser unit may have three or more filling nozzles.
　図２に示すように、ガス供給管路５は、ディスペンサ筐体４内に配設され、加圧状態の水素ガスをガス蓄圧器２から充填ホース６Ａ，６Ｂ側に向けて供給する。このために、ガス供給管路５は、上流側がガス蓄圧器２に接続されている。即ち、ガス供給管路５は、ガス蓄圧器２側が上流側となり、充填ホース６Ａ，６Ｂ側が下流側となっている。この場合、ガス供給管路５の下流側は、複数、例えば２経路に分岐されている。即ち、ガス供給管路５は、ガス蓄圧器２側となる上流側のメイン供給管路５Ａと、メイン供給管路５Ａの下流端の分岐部５Ｄの位置で分岐された下流側の第１供給管路５Ｂおよび第２供給管路５Ｃとを有している。 As shown in FIG. 2, the gas supply pipeline 5 is arranged in the dispenser housing 4, and supplies hydrogen gas in a pressurized state from the gas accumulator 2 toward the filling hoses 6A and 6B. For this purpose, the upstream side of the gas supply pipeline 5 is connected to the gas accumulator 2. That is, in the gas supply pipeline 5, the gas accumulator 2 side is the upstream side, and the filling hoses 6A and 6B sides are the downstream side. In this case, the downstream side of the gas supply pipeline 5 is branched into a plurality of, for example, two paths. That is, the gas supply pipe 5 is the first supply on the downstream side branched at the position of the main supply pipe 5A on the upstream side on the gas accumulator 2 side and the branch portion 5D at the downstream end of the main supply pipe 5A. It has a pipeline 5B and a second supply pipeline 5C.
　これにより、ガス供給管路５は、途中で第１供給管路５Ｂと第２供給管路５Ｃとに分岐している。そして、ガス供給管路５の下流側の端部、より具体的には、第１供給管路５Ｂの下流端には、ディスペンサ筐体４の外部へと延びる第１充填ホース６Ａが接続されており、第２供給管路５Ｃの下流端には、ディスペンサ筐体４の外部へと延びる第２充填ホース６Ｂが接続されている。充填ホース６Ａ，６Ｂは、可撓性を有する耐圧ホースが用いられている。 As a result, the gas supply line 5 is branched into the first supply line 5B and the second supply line 5C on the way. A first filling hose 6A extending to the outside of the dispenser housing 4 is connected to a downstream end of the gas supply pipe 5, more specifically, a downstream end of the first supply pipe 5B. A second filling hose 6B extending to the outside of the dispenser housing 4 is connected to the downstream end of the second supply pipe 5C. As the filling hoses 6A and 6B, flexible pressure resistant hoses are used.
　このように、実施形態では、ガス供給経路としてのガス供給管路５は、複数の経路となる第１供給管路５Ｂと第２供給管路５Ｃとを備えている。これにより、例えば、一方の水素ガス充填経路に関するメンテナンス（例えば、第１供給管路５Ｂ、第１充填ホース６Ａ、第１充填ノズル７Ａ、第１緊急離脱カップリング８Ａ、第１ノズル掛け２６Ａのメンテナンス）を行っているときに、他方の水素ガス充填経路（例えば、第２供給管路５Ｃ、第２充填ホース６Ｂ、第２充填ノズル７Ｂ等）を利用して水素ガスの充填を行うことができる。 As described above, in the embodiment, the gas supply line 5 as the gas supply path includes the first supply line 5B and the second supply line 5C which are a plurality of paths. Thereby, for example, maintenance related to one hydrogen gas filling path (for example, maintenance of the first supply pipe line 5B, the first filling hose 6A, the first filling nozzle 7A, the first emergency disconnection coupling 8A, and the first nozzle hook 26A). ), The hydrogen gas can be filled by using the other hydrogen gas filling path (for example, the second supply pipe line 5C, the second filling hose 6B, the second filling nozzle 7B, etc.). ..
　充填ホース６Ａ，６Ｂは、基端側がガス供給管路５の下流側に接続されている。即ち、第１充填ホース６Ａは、基端側が第１供給管路５Ｂの下流側に接続されており、第２充填ホース６Ｂは、基端側が第２供給管路５Ｃの下流側に接続されている。第１充填ホース６Ａの先端には、車両３１に搭載された被充填タンク３２に連結される第１充填ノズル７Ａが設けられている。第２充填ホース６Ｂの先端には、車両３１に搭載された被充填タンク３２に連結される第２充填ノズル７Ｂが設けられている。 The base end side of the filling hoses 6A and 6B is connected to the downstream side of the gas supply pipeline 5. That is, the base end side of the first filling hose 6A is connected to the downstream side of the first supply line 5B, and the base end side of the second filling hose 6B is connected to the downstream side of the second supply line 5C. There is. At the tip of the first filling hose 6A, a first filling nozzle 7A connected to a tank to be filled 32 mounted on the vehicle 31 is provided. At the tip of the second filling hose 6B, a second filling nozzle 7B connected to the filled tank 32 mounted on the vehicle 31 is provided.
　第１充填ホース６Ａの途中には、第１緊急離脱カップリング８Ａが設けられており、第２充填ホース６Ｂの途中には、第２緊急離脱カップリング８Ｂが設けられている。「第１充填ホース６Ａ、第１充填ノズル７Ａおよび第１緊急離脱カップリング８Ａ」と「第２充填ホース６Ｂ、第２充填ノズル７Ｂおよび第２緊急離脱カップリング８Ｂ」は、第１供給管路５Ｂに接続されているか第２供給管路５Ｃに接続されているかで異なる以外、同様の構成である。充填ホース６Ａ，６Ｂは、ガス供給管路５と共に、水素ガス充填経路（燃料ガス充填経路）を構成している。水素ガス充填経路は、水素ガスを燃料として走行する車両３１の被充填タンク３２に水素ガスを充填するための経路（管路）である。 A first emergency withdrawal coupling 8A is provided in the middle of the first filling hose 6A, and a second emergency withdrawal coupling 8B is provided in the middle of the second filling hose 6B. "1st filling hose 6A, 1st filling nozzle 7A and 1st emergency disconnection coupling 8A" and "2nd filling hose 6B, 2nd filling nozzle 7B and 2nd emergency disconnection coupling 8B" are the first supply pipes. The configuration is the same except that it differs depending on whether it is connected to the 5B or the second supply line 5C. The filling hoses 6A and 6B together with the gas supply pipeline 5 form a hydrogen gas filling path (fuel gas filling path). The hydrogen gas filling path is a path (pipeline) for filling the filled tank 32 of the vehicle 31 traveling on hydrogen gas as fuel with hydrogen gas.
　充填ノズル７Ａ，７Ｂは、充填ホース６Ａ，６Ｂを介してガス供給管路５の下流側に接続されている。充填ノズル７Ａ，７Ｂは、充填ホース６Ａ，６Ｂの先端側に気密状態で接続されており、所謂充填カップリングを構成している。充填ノズル７Ａ，７Ｂは、充填ホース６Ａ，６Ｂを介してディスペンサ筐体４（より具体的には、ガス供給管路５）と接続されている。充填ノズル７Ａ，７Ｂの内部には、例えば、水素ガスの流通を許可する「開位置」と水素ガスの流通を遮断する「閉位置」とに切換えられる弁部が設けられている。なお、充填ノズル７Ａ，７Ｂには、弁部に代えて、または、弁部と共に、逆止弁を設けてもよい。逆止弁は、充填ノズル７Ａ，７Ｂから車両３１の被充填タンク３２への水素ガスの流通を許容し、被充填タンク３２から充填ノズル７Ａ，７Ｂへの水素ガスの流通を阻止する。 The filling nozzles 7A and 7B are connected to the downstream side of the gas supply pipeline 5 via the filling hoses 6A and 6B. The filling nozzles 7A and 7B are connected to the tip ends of the filling hoses 6A and 6B in an airtight state, and form a so-called filling coupling. The filling nozzles 7A and 7B are connected to the dispenser housing 4 (more specifically, the gas supply pipeline 5) via the filling hoses 6A and 6B. Inside the filling nozzles 7A and 7B, for example, a valve portion that can be switched between an "open position" that permits the flow of hydrogen gas and an "closed position" that blocks the flow of hydrogen gas is provided. The filling nozzles 7A and 7B may be provided with a check valve in place of the valve portion or together with the valve portion. The check valve allows the flow of hydrogen gas from the filling nozzles 7A and 7B to the filled tank 32 of the vehicle 31 and blocks the flow of hydrogen gas from the filled tank 32 to the filling nozzles 7A and 7B.
　充填ノズル７Ａ，７Ｂの先端側は、接続カプラとなっており、被充填タンク３２の接続口となる充填口３２Ａに着脱可能に接続される。即ち、充填ノズル７Ａ，７Ｂの接続カプラは、充填ノズル７Ａ，７Ｂ内の管路（図示せず）を通じて車両３１の被充填タンク３２に水素ガスを供給するときに、被充填タンク３２の充填口３２Ａに気密状態で着脱可能に接続される。また、充填ノズル７Ａ，７Ｂは、被充填タンク３２の充填口３２Ａに対して係脱可能にロックされるロック機構（図示せず）を備えている。これにより、充填ノズル７Ａ，７Ｂは、水素ガスの充填時に充填口３２Ａから不用意に外れることを抑制できる。 The tip side of the filling nozzles 7A and 7B is a connection coupler, and is detachably connected to the filling port 32A which is the connection port of the tank 32 to be filled. That is, when the connecting coupler of the filling nozzles 7A and 7B supplies hydrogen gas to the filled tank 32 of the vehicle 31 through the pipeline (not shown) in the filling nozzles 7A and 7B, the filling port of the filled tank 32 It is detachably connected to 32A in an airtight state. Further, the filling nozzles 7A and 7B are provided with a lock mechanism (not shown) that is detachably locked to the filling port 32A of the tank to be filled 32. As a result, the filling nozzles 7A and 7B can be prevented from being inadvertently detached from the filling port 32A when the hydrogen gas is filled.
　ガス蓄圧器２内の高圧な水素ガスは、充填ノズル７Ａ，７Ｂが被充填タンク３２の充填口３２Ａに対してロック機構によりロックされた状態で、ガス供給管路５、充填ホース６Ａ，６Ｂおよび充填ノズル７Ａ，７Ｂを通じて車両３１の被充填タンク３２に充填される。即ち、水素ガス充填装置１は、充填ノズル７Ａ，７Ｂを備えており、この充填ノズル７Ａ，７Ｂを用いて車両３１の被充填タンク３２へ水素ガスを充填する。充填ノズル７Ａ，７Ｂは、充填作業が行われていないときに、ノズル掛け２６Ａ，２６Ｂに保持される。 For the high-pressure hydrogen gas in the gas accumulator 2, the gas supply pipeline 5, the filling hoses 6A, 6B and the filling nozzles 7A, 7B are locked with respect to the filling port 32A of the tank 32 to be filled by the locking mechanism. The tank 32 to be filled of the vehicle 31 is filled through the filling nozzles 7A and 7B. That is, the hydrogen gas filling device 1 is provided with filling nozzles 7A and 7B, and the filling tank 32 of the vehicle 31 is filled with hydrogen gas using the filling nozzles 7A and 7B. The filling nozzles 7A and 7B are held by the nozzle hooks 26A and 26B when the filling operation is not performed.
　図２に示すように、ディスペンサユニット３には、それぞれガス供給管路５（メイン供給管路５Ａ）の途中に位置して、例えば手動操作により開弁、閉弁される入口弁１１と、入口弁１１の下流側に接続され制御装置２４によって開弁、閉弁されることによりガス供給管路５を流れる燃料の流量を調整可能に制御する制御弁としての流量調整弁１２と、流量調整弁１２よりも下流側に接続された電磁式または空圧作動式の弁装置である遮断弁１３とが設けられている。なお、ガス供給管路５の上流側から下流側に向けて設けられている流量計１７、流量調整弁１２、遮断弁１３の配置（取付けの順番）は、図２中に示した順番に限定されるものではない。 As shown in FIG. 2, the dispenser unit 3 has an inlet valve 11 located in the middle of the gas supply pipeline 5 (main supply pipeline 5A), for example, an inlet valve 11 which is manually opened and closed, and an inlet. A flow rate adjusting valve 12 as a control valve that is connected to the downstream side of the valve 11 and is opened and closed by the control device 24 to control the flow rate of fuel flowing through the gas supply pipeline 5 in an adjustable manner, and a flow rate adjusting valve. A isolation valve 13 which is an electromagnetic or pneumatically operated valve device connected to the downstream side of the 12 is provided. The arrangement (order of installation) of the flow meter 17, the flow rate adjusting valve 12, and the isolation valve 13 provided from the upstream side to the downstream side of the gas supply pipeline 5 is limited to the order shown in FIG. It is not something that will be done.
　入口弁１１は、ディスペンサ筐体４内に位置してガス供給管路５（メイン供給管路５Ａ）の途中に設けられている。なお、入口弁１１は、必要に応じて取付けられるものであり、不要であればこれを除いてもよい。流量調整弁１２および遮断弁１３は、ガス供給管路５を流れる水素ガスの流量および圧力を制御する制御機器を構成している。流量計１７、圧力センサ１８および温度センサ１９は、ガス供給管路５を流れる水素ガスの流量、圧力および温度を計測する計測機器を構成している。 The inlet valve 11 is located in the dispenser housing 4 and is provided in the middle of the gas supply pipe line 5 (main supply pipe line 5A). The inlet valve 11 is attached as needed, and may be removed if unnecessary. The flow rate adjusting valve 12 and the isolation valve 13 constitute a control device for controlling the flow rate and pressure of hydrogen gas flowing through the gas supply line 5. The flow meter 17, the pressure sensor 18, and the temperature sensor 19 constitute a measuring device for measuring the flow rate, pressure, and temperature of hydrogen gas flowing through the gas supply line 5.
　ディスペンサユニット３内に設けられた流量調整弁１２は、例えば空圧作動式の弁装置であり、エアの供給で開弁し、制御信号で制御圧（エア圧）を制御して弁開度が調整される。流量調整弁１２は、制御装置２４の制御プログラムに基づく指令により任意の弁開度に制御され、ガス供給管路５内を流れる水素ガスの流量、水素ガス圧を可変に制御する。 The flow rate adjusting valve 12 provided in the dispenser unit 3 is, for example, a pneumatically operated valve device, which is opened by supplying air and controls the control pressure (air pressure) by a control signal to increase the valve opening degree. It will be adjusted. The flow rate adjusting valve 12 is controlled to an arbitrary valve opening degree by a command based on the control program of the control device 24, and variably controls the flow rate of hydrogen gas flowing in the gas supply pipeline 5 and the hydrogen gas pressure.
　遮断弁１３は、ガス供給管路５（メイン供給管路５Ａ）の途中部位（例えば、冷却器１４と圧力センサ１８との間）に設けられた電磁式または空圧作動式の弁装置である。遮断弁１３は、制御装置２４からの制御信号に基づいて開閉されることにより、ガス供給管路５内で水素ガス（燃料ガス、充填ガス）の流通を許容または遮断する。 The isolation valve 13 is an electromagnetic or pneumatically operated valve device provided in the middle of the gas supply line 5 (main supply line 5A) (for example, between the cooler 14 and the pressure sensor 18). .. The shutoff valve 13 is opened and closed based on a control signal from the control device 24 to allow or shut off the flow of hydrogen gas (fuel gas, filling gas) in the gas supply pipeline 5.
　即ち、制御装置２４は、充填ノズル７Ａ，７Ｂを介して車両３１の被充填タンク３２に水素ガスを充填するとき、または、水素ガスの充填を停止（終了）するときに、流量調整弁１２および遮断弁１３の開閉弁制御を行う。流量調整弁１２および遮断弁１３は、ガス供給管路５（メイン供給管路５Ａ）の途中に設けられており、開弁することによりガス蓄圧器２内の水素ガスを充填ノズル７Ａ，７Ｂへ供給する供給制御弁に相当する。 That is, when the control device 24 fills the filled tank 32 of the vehicle 31 with hydrogen gas via the filling nozzles 7A and 7B, or when the filling of hydrogen gas is stopped (finished), the flow rate adjusting valve 12 and the control device 24 The on-off valve of the shutoff valve 13 is controlled. The flow rate adjusting valve 12 and the isolation valve 13 are provided in the middle of the gas supply line 5 (main supply line 5A), and by opening the valve, the hydrogen gas in the gas accumulator 2 is filled into the filling nozzles 7A and 7B. Corresponds to the supply control valve that supplies.
　冷却器１４は、ガス供給管路５内を流れる水素ガスを冷却するための冷却装置である。冷却器１４は、被充填タンク３２に充填される水素ガスの温度上昇を抑えるため、ガス供給管路５の途中位置で水素ガスを冷却する。冷却器１４は、流量調整弁１２と遮断弁１３との間に位置してガス供給管路５（メイン供給管路５Ａ）の途中部位に設けられた熱交換器１６と、熱交換器１６に冷媒管路１５Ａ，１５Ｂを介して接続され、例えばコンプレッサ、ポンプ等の駆動機構を備えたチラーユニット（図示せず）とを含んで構成されている。 The cooler 14 is a cooling device for cooling the hydrogen gas flowing in the gas supply pipe line 5. The cooler 14 cools the hydrogen gas at a position in the middle of the gas supply pipe 5 in order to suppress the temperature rise of the hydrogen gas filled in the tank 32 to be filled. The cooler 14 is located between the flow control valve 12 and the isolation valve 13 and is provided in the heat exchanger 16 and the heat exchanger 16 provided in the middle of the gas supply line 5 (main supply line 5A). It is connected via the refrigerant pipelines 15A and 15B, and includes, for example, a chiller unit (not shown) provided with a drive mechanism such as a compressor or a pump.
　冷却器１４には、チラーユニットから熱交換器１６側に向けて冷媒（例えば、エチレングリコール等を含んだ液体）を供給する供給側の冷媒管路１５Ａと、熱交換器１６からチラーユニット側に向けて熱交換後の冷媒を戻す戻り側の冷媒管路１５Ｂとが設けられている。チラーユニットは、冷媒管路１５Ａ，１５Ｂを介して熱交換器１６との間に冷媒を循環させる。これにより、冷却器１４の熱交換器１６は、ガス供給管路５内を流れる水素ガスと冷媒との間で熱交換を行い、充填ホース６Ａ，６Ｂに向けて供給される水素ガスの温度を規定温度（例えば、－３３～－４０℃）まで低下させる。 The cooler 14 has a refrigerant conduit 15A on the supply side for supplying a refrigerant (for example, a liquid containing ethylene glycol or the like) from the chiller unit to the heat exchanger 16 side, and the heat exchanger 16 to the chiller unit side. A return-side refrigerant conduit 15B for returning the refrigerant after heat exchange is provided. The chiller unit circulates the refrigerant between the heat exchanger 16 and the refrigerant pipes 15A and 15B. As a result, the heat exchanger 16 of the cooler 14 exchanges heat between the hydrogen gas flowing in the gas supply pipe line 5 and the refrigerant, and changes the temperature of the hydrogen gas supplied to the filling hoses 6A and 6B. The temperature is lowered to the specified temperature (for example, −33 to −40 ° C.).
　ディスペンサ筐体４内には、ガス供給管路５（メイン供給管路５Ａ）の途中に位置して被測流体の質量流量を計測するコリオリ式の流量計１７が設けられている。流量計１７は、例えば入口弁１１と流量調整弁１２との間でガス供給管路５内を流れる水素ガスの流量（質量流量）を計測し、計測結果（検出信号）を制御装置２４へと出力する。制御装置２４は、車両３１の被充填タンク３２に対する水素ガスの充填量を演算し、水素ガス燃料の払出し量（給油量に相当）を表示部２５等で表示する。これにより、例えば顧客等に表示内容を報知する。 Inside the dispenser housing 4, a corioli-type flow meter 17 is provided, which is located in the middle of the gas supply line 5 (main supply line 5A) and measures the mass flow rate of the fluid to be measured. The flow meter 17 measures, for example, the flow rate (mass flow rate) of hydrogen gas flowing in the gas supply pipeline 5 between the inlet valve 11 and the flow rate adjusting valve 12, and transfers the measurement result (detection signal) to the control device 24. Output. The control device 24 calculates the amount of hydrogen gas filled in the filled tank 32 of the vehicle 31, and displays the amount of hydrogen gas fuel discharged (corresponding to the amount of refueling) on the display unit 25 or the like. As a result, for example, the display content is notified to the customer or the like.
　圧力センサ１８は、遮断弁１３よりも下流側（即ち、充填ノズル７Ａ，７Ｂ側）のガス供給管路５（メイン供給管路５Ａ）に設けられている。圧力センサ１８は、ガス蓄圧器２から供給される水素ガスの圧力（即ち、被充填タンク３２の圧力、または、被充填タンク３２内の圧力にほぼ相当する管路途中の圧力）を検知する。圧力センサ１８は、充填ノズル７Ａ，７Ｂの近傍でガス供給管路５内の圧力を測定し、測定した圧力に応じた検出信号を制御装置２４へと出力する。 The pressure sensor 18 is provided in the gas supply line 5 (main supply line 5A) on the downstream side (that is, the filling nozzles 7A, 7B side) of the shutoff valve 13. The pressure sensor 18 detects the pressure of hydrogen gas supplied from the gas accumulator 2 (that is, the pressure of the tank 32 to be filled or the pressure in the middle of the pipeline substantially corresponding to the pressure in the tank 32 to be filled). The pressure sensor 18 measures the pressure in the gas supply pipe line 5 in the vicinity of the filling nozzles 7A and 7B, and outputs a detection signal corresponding to the measured pressure to the control device 24.
　温度センサ１９は、遮断弁１３と圧力センサ１８との間に位置してガス供給管路５（メイン供給管路５Ａ）の途中に設けられている。温度センサ１９は、ガス供給管路５内を流れる水素ガスの温度を検出し、その検出結果（検出信号）を制御装置２４へと出力する。なお、温度センサ１９と圧力センサ１８との配置関係は、図２に示す配置に限るものではなく、例えば互いに逆となる配置にしてもよい。また、例えば、第１供給管路５Ｂと第２供給管路５Ｃとのそれぞれに温度センサ１９および圧力センサ１８を設けてもよい。 The temperature sensor 19 is located between the shutoff valve 13 and the pressure sensor 18 and is provided in the middle of the gas supply line 5 (main supply line 5A). The temperature sensor 19 detects the temperature of the hydrogen gas flowing in the gas supply pipe 5, and outputs the detection result (detection signal) to the control device 24. The arrangement relationship between the temperature sensor 19 and the pressure sensor 18 is not limited to the arrangement shown in FIG. 2, and may be, for example, opposite to each other. Further, for example, a temperature sensor 19 and a pressure sensor 18 may be provided in each of the first supply line 5B and the second supply line 5C, respectively.
　充填開始スイッチ２０と充填停止スイッチ２１は、例えばディスペンサ筐体４の前面側に設けられている。充填開始スイッチ２０および充填停止スイッチ２１は、例えば燃料供給所（水素ステーション）の作業者が手動操作可能なスイッチである。充填開始スイッチ２０は、水素ガスの充填を開始するときに操作される。充填停止スイッチ２１は、水素ガスの充填中にガスの充填を停止するときに操作される。充填開始スイッチ２０と充填停止スイッチ２１は、操作状態に応じた信号を制御装置２４にそれぞれ出力する。これにより、制御装置２４は、これらの信号に応じて遮断弁１３を開弁または閉弁させる。 The filling start switch 20 and the filling stop switch 21 are provided, for example, on the front side of the dispenser housing 4. The filling start switch 20 and the filling stop switch 21 are switches that can be manually operated by, for example, an operator of a fuel supply station (hydrogen station). The filling start switch 20 is operated when starting filling of hydrogen gas. The filling stop switch 21 is operated when the filling of the gas is stopped during the filling of the hydrogen gas. The filling start switch 20 and the filling stop switch 21 output signals according to the operating state to the control device 24, respectively. As a result, the control device 24 opens or closes the isolation valve 13 in response to these signals.
　ガス供給管路５（メイン供給管路５Ａ）の遮断弁１３よりも下流側には、例えば充填ホース６Ａ，６Ｂ側からガス圧力を脱圧するための脱圧管路２２が分岐して設けられている。脱圧管路２２の途中には、例えば電磁式または空圧作動式の弁装置である脱圧弁２３が設けられている。脱圧弁２３は、充填ホース６Ａ，６Ｂ（充填ノズル７Ａ，７Ｂ）を用いた水素ガスの充填作業が完了し、遮断弁１３が閉弁されたときに、制御装置２４からの信号に基づいて開弁制御される。 On the downstream side of the shutoff valve 13 of the gas supply pipe 5 (main supply pipe 5A), for example, a decompression pipe 22 for depressurizing the gas pressure is provided branched from the filling hoses 6A and 6B. .. In the middle of the decompression pipeline 22, for example, a decompression valve 23, which is an electromagnetic or pneumatically operated valve device, is provided. The decompression valve 23 opens based on a signal from the control device 24 when the hydrogen gas filling operation using the filling hoses 6A and 6B (filling nozzles 7A and 7B) is completed and the isolation valve 13 is closed. The valve is controlled.
　充填ノズル７Ａ，７Ｂ（の接続カプラ）を被充填タンク３２の充填口３２Ａから取外す場合には、充填ホース６Ａ，６Ｂ内の圧力を大気圧レベルまで減圧する必要がある。このため、ガス充填作業の完了時には、脱圧弁２３を一時的に開弁して脱圧管路２２の先端側を大気に開放させる。これにより、充填ホース６Ａ，６Ｂ側の水素ガスは、外部に放出されて充填ホース６Ａ，６Ｂ内の圧力が大気圧レベルまで減圧される。この結果、充填ノズル７Ａ，７Ｂは、被充填タンク３２の充填口３２Ａから取外し可能となる。 When removing the filling nozzles 7A and 7B (connecting couplers) from the filling port 32A of the tank 32 to be filled, it is necessary to reduce the pressure in the filling hoses 6A and 6B to the atmospheric pressure level. Therefore, when the gas filling operation is completed, the decompression valve 23 is temporarily opened to open the tip end side of the decompression pipeline 22 to the atmosphere. As a result, the hydrogen gas on the filling hoses 6A and 6B is discharged to the outside, and the pressure in the filling hoses 6A and 6B is reduced to the atmospheric pressure level. As a result, the filling nozzles 7A and 7B can be removed from the filling port 32A of the tank to be filled 32.
　制御装置２４は、流量調整弁１２、遮断弁１３、脱圧弁２３等を制御するコントローラ（コントロールユニット）を構成している。制御装置２４は、流量調整弁１２および遮断弁１３の制御を行うことにより充填対象となる被充填タンク３２への燃料供給を制御する。即ち、制御装置２４は、供給制御弁となる流量調整弁１２および遮断弁１３を開閉制御することにより、車両３１の被充填タンク３２への水素ガスの供給を制御する充填制御手段を構成している。制御装置２４は、例えば、ＣＰＵ、メモリ２４Ａ、タイマ等を備えたマイクロコンピュータを含んで構成されている。制御装置２４のメモリ２４Ａには、例えば、後述の図６に示す処理フローを実行するための処理プログラム、即ち、充填制御処理用のプログラム等が格納されている。 The control device 24 constitutes a controller (control unit) that controls the flow rate adjusting valve 12, the isolation valve 13, the depressurizing valve 23, and the like. The control device 24 controls the fuel supply to the tank to be filled 32 to be filled by controlling the flow rate adjusting valve 12 and the isolation valve 13. That is, the control device 24 constitutes a filling control means for controlling the supply of hydrogen gas to the filled tank 32 of the vehicle 31 by controlling the opening and closing of the flow rate adjusting valve 12 and the isolation valve 13, which are supply control valves. There is. The control device 24 includes, for example, a microcomputer including a CPU, a memory 24A, a timer, and the like. In the memory 24A of the control device 24, for example, a processing program for executing the processing flow shown in FIG. 6 described later, that is, a program for filling control processing and the like are stored.
　制御装置２４の入力側には、流量計１７、圧力センサ１８、温度センサ１９、充填開始スイッチ２０、充填停止スイッチ２１、ノズル検出器２７Ａ，２７Ｂ、リミットスイッチ４７，４７等が接続されている。一方、制御装置２４の出力側は、流量調整弁１２、遮断弁１３、脱圧弁２３、表示部２５等と接続されている。 A flow meter 17, a pressure sensor 18, a temperature sensor 19, a filling start switch 20, a filling stop switch 21, nozzle detectors 27A, 27B, limit switches 47, 47, etc. are connected to the input side of the control device 24. On the other hand, the output side of the control device 24 is connected to the flow rate adjusting valve 12, the isolation valve 13, the depressurizing valve 23, the display unit 25, and the like.
　表示部２５は、ディスペンサ筐体４の前面側に設けられている。表示部２５は、水素ガスの充填作業を行う作業者が視認し易い高さ位置に配置され、水素ガスの充填作業に必要な情報表示等を行う。表示部２５は、例えば、液晶モニタ、液晶タッチパネル等により構成されている。ディスペンサ筐体４の前面側には、表示部２５の他に充填開始スイッチ２０、充填停止スイッチ２１等の操作部が設けられている。 The display unit 25 is provided on the front side of the dispenser housing 4. The display unit 25 is arranged at a height position that is easily visible to the operator performing the hydrogen gas filling operation, and displays information necessary for the hydrogen gas filling operation. The display unit 25 is composed of, for example, a liquid crystal monitor, a liquid crystal touch panel, or the like. In addition to the display unit 25, operation units such as a filling start switch 20 and a filling stop switch 21 are provided on the front surface side of the dispenser housing 4.
　ノズル掛け２６Ａ，２６Ｂは、例えばディスペンサ筐体４の側面側に設けられている。第１ノズル掛け２６Ａには、第１充填ノズル７Ａが取外し可能に掛止めされ、第２ノズル掛け２６Ｂには、第２充填ノズル７Ｂが取外し可能に掛止めされる。ノズル掛け２６Ａ，２６Ｂには、水素ガスの非充填時（即ち、充填作業の待機時間）に充填ノズル７Ａ，７Ｂが掛止めされる。水素ガスを充填するときは、充填作業の作業者によりノズル掛け２６Ａ，２６Ｂから充填ノズル７Ａ，７Ｂが取外される。ノズル掛け２６Ａ，２６Ｂは、ディスペンサ筐体４の側面側に充填ノズル７Ａ，７Ｂを収容するノズル収容部に相当する。 The nozzle hooks 26A and 26B are provided, for example, on the side surface side of the dispenser housing 4. The first filling nozzle 7A is detachably hooked to the first nozzle hook 26A, and the second filling nozzle 7B is detachably hooked to the second nozzle hook 26B. The filling nozzles 7A and 7B are hooked to the nozzle hooks 26A and 26B when the hydrogen gas is not filled (that is, the waiting time for the filling work). When filling hydrogen gas, the filling nozzles 7A and 7B are removed from the nozzle hooks 26A and 26B by the filling work operator. The nozzle hooks 26A and 26B correspond to a nozzle accommodating portion for accommodating the filling nozzles 7A and 7B on the side surface side of the dispenser housing 4.
　ノズル掛け２６Ａ，２６Ｂには、充填ノズル７Ａ，７Ｂが掛止めされたか否か（換言すれば、充填ノズル７Ａ，７Ｂがノズル収容部に収容されたか否か）を検出するノズル検出器２７Ａ，２７Ｂが設けられている。ノズル検出器２７Ａ，２７Ｂは、例えば２位置切換型のスイッチにより構成されている。ノズル検出器２７Ａ，２７Ｂは、制御装置２４に接続されている。 Nozzle detectors 27A and 27B that detect whether or not the filling nozzles 7A and 7B are hooked on the nozzle hooks 26A and 26B (in other words, whether or not the filling nozzles 7A and 7B are housed in the nozzle accommodating portion). Is provided. The nozzle detectors 27A and 27B are composed of, for example, a two-position switching type switch. The nozzle detectors 27A and 27B are connected to the control device 24.
　第１ノズル検出器２７Ａは、例えば、第１充填ノズル７Ａを第１ノズル掛け２６Ａに掛止めすると、第１充填ノズル７Ａによって押動され、オン（ＯＮ）状態に切換わる。第１ノズル検出器２７Ａは、第１充填ノズル７Ａがノズル掛け２６Ａから取出される（または取外される）と、オフ（ＯＦＦ）状態に切換わる。同様に、第２ノズル検出器２７Ｂは、例えば、第２充填ノズル７Ｂを第２ノズル掛け２６Ｂに掛止めするとオン（ＯＮ）状態に切換わり、第２充填ノズル７Ｂが第２ノズル掛け２６Ｂから取出される（または取外される）とオフ（ＯＦＦ）状態に切換わる。 For example, when the first filling nozzle 7A is hooked on the first nozzle hook 26A, the first nozzle detector 27A is pushed by the first filling nozzle 7A and switched to the ON state. The first nozzle detector 27A switches to the OFF state when the first filling nozzle 7A is taken out (or removed) from the nozzle hook 26A. Similarly, the second nozzle detector 27B is switched to the ON state when, for example, the second filling nozzle 7B is hooked on the second nozzle hook 26B, and the second filling nozzle 7B is taken out from the second nozzle hook 26B. When it is turned on (or removed), it switches to the off state.
　ノズル検出器２７Ａ，２７Ｂは、充填ノズル７Ａ，７Ｂがノズル掛け２６Ａ，２６Ｂに掛止めされたか否かに対応する検出信号（ＯＮ信号またはＯＦＦ信号）を、制御装置２４に出力する。なお、ノズル検出器２７Ａ，２７Ｂは、ディスペンサ筐体４側のノズル掛け２６Ａ，２６Ｂに設けるものに限らず、充填ノズル７Ａ，７Ｂ側に設けてもよい。いずれの場合も、水素ガスの非充填時（即ち、充填作業の待機時間）は、ディスペンサユニット３のノズル掛け２６Ａ，２６Ｂに充填ノズル７Ａ，７Ｂが保持される。即ち、車両３１の被充填タンク３２に水素ガスを充填する充填作業が終了すると、充填ノズル７Ａ，７Ｂは、ノズル掛け２６Ａ，２６Ｂに戻される（ノズル収容部に収容状態に保持される）。 The nozzle detectors 27A and 27B output a detection signal (ON signal or OFF signal) corresponding to whether or not the filling nozzles 7A and 7B are hooked on the nozzle hooks 26A and 26B to the control device 24. The nozzle detectors 27A and 27B are not limited to those provided on the nozzle hooks 26A and 26B on the dispenser housing 4 side, and may be provided on the filling nozzles 7A and 7B. In either case, the filling nozzles 7A and 7B are held by the nozzle hooks 26A and 26B of the dispenser unit 3 when the hydrogen gas is not filled (that is, the waiting time for the filling work). That is, when the filling operation of filling the filled tank 32 of the vehicle 31 with hydrogen gas is completed, the filling nozzles 7A and 7B are returned to the nozzle hooks 26A and 26B (held in the nozzle accommodating portion).
　水素ガスを燃料として走行駆動される車両３１は、例えば図１に示すような４輪自動車（乗用車）により構成されている。車両３１は、例えば燃料電池と電動モータとを含んで構成される駆動装置（図示せず）、図１中に点線で示す被充填タンク３２等を備えている。被充填タンク３２は、水素ガスが充填される耐圧構造をもった容器として構成され、例えば車両３１の後部側に搭載されている。なお、被充填タンク３２は、車両３１の後部側に限らず、前部側または中央部側に設ける構成としてもよい。 The vehicle 31 driven by running on hydrogen gas as fuel is composed of, for example, a four-wheeled vehicle (passenger car) as shown in FIG. The vehicle 31 includes, for example, a drive device (not shown) including a fuel cell and an electric motor, a filled tank 32 shown by a dotted line in FIG. 1, and the like. The filled tank 32 is configured as a container having a pressure-resistant structure filled with hydrogen gas, and is mounted on the rear side of the vehicle 31, for example. The tank 32 to be filled is not limited to the rear side of the vehicle 31, but may be provided on the front side or the center side.
　被充填タンク３２には、充填ノズル７Ａ（７Ｂ）の接続カプラが着脱可能に取付けられる充填口３２Ａ（レセプタクル）が設けられている。車両３１の被充填タンク３２内には、充填ノズル７Ａ（７Ｂ）が充填口３２Ａに気密に連結（接続）された状態で水素ガスの充填が行われる。このとき、充填ノズル７Ａ（７Ｂ）は、ロック機構により充填口３２Ａに対して不用意に外れることがないようにロックされる。 The filling tank 32 is provided with a filling port 32A (receptacle) to which the connection coupler of the filling nozzle 7A (7B) can be detachably attached. The filled tank 32 of the vehicle 31 is filled with hydrogen gas in a state where the filling nozzle 7A (7B) is airtightly connected (connected) to the filling port 32A. At this time, the filling nozzle 7A (7B) is locked by the locking mechanism so as not to be inadvertently disengaged from the filling port 32A.
　ところで、水素ガス充填装置１のメンテナンス(例えば、充填ノズルやガス供給管路の点検)を行っているときに、誤って水素ガスの充填開始操作がなされた場合に、流量調整弁１２および遮断弁１３が開弁し、ガス供給管路５を通じて充填ノズル７Ａ，７Ｂから水素ガスが吐出されることは好ましくない。そこで、メンテナンス中に充填ノズル７Ａ，７Ｂから水素ガスが吐出されることを防止するために、流量調整弁１２および遮断弁１３とは別に、ガス供給管路５内の開閉を切換えるための切換弁を設けることが考えられる。例えば、図２に示すように、ガス供給管路５の第１供給管路５Ｂに第１切換弁４１Ａを設けると共に、第２供給管路５Ｃに第２切換弁４１Ｂを設けることが考えられる。 By the way, when the hydrogen gas filling start operation is mistakenly performed during maintenance of the hydrogen gas filling device 1 (for example, inspection of the filling nozzle and the gas supply pipeline), the flow rate adjusting valve 12 and the shutoff valve are used. It is not preferable that the valve 13 is opened and hydrogen gas is discharged from the filling nozzles 7A and 7B through the gas supply pipeline 5. Therefore, in order to prevent hydrogen gas from being discharged from the filling nozzles 7A and 7B during maintenance, a switching valve for switching the opening and closing of the gas supply pipeline 5 separately from the flow rate adjusting valve 12 and the isolation valve 13. It is conceivable to provide. For example, as shown in FIG. 2, it is conceivable to provide the first switching valve 41A in the first supply line 5B of the gas supply line 5 and to provide the second switching valve 41B in the second supply line 5C.
　ここで、切換弁４１Ａ，４１Ｂとして、例えば、電磁式または空圧作動式の弁装置、即ち、制御装置２４によって開弁、閉弁の切換えが可能な自動弁を採用することが考えられる。しかし、電磁弁等の自動弁は、開弁、閉弁を行うアクチュエータを搭載している分、大きな設置スペースが必要になることに加えて、機器単体のコストが高くなる可能性がある。これに対して、切換弁４１Ａ，４１Ｂとして、開弁、閉弁を手動で切換える手動弁を採用した場合には、省スペースで設置できることに加えて、コストも低減できる。しかし、いずれの場合も、即ち、切換弁４１Ａ，４１Ｂとして自動弁を採用した場合も手動弁を採用した場合も、メンテナンスを行う係員が目視により切換弁４１Ａ，４１Ｂの開閉状態を把握できない可能性がある。また、手動式の切換弁４１Ａ，４１Ｂを採用した場合、そのままでは制御装置２４により開閉状態を検知できない可能性がある。 Here, as the switching valves 41A and 41B, for example, it is conceivable to adopt an electromagnetic or pneumatically operated valve device, that is, an automatic valve that can be switched between opening and closing by the control device 24. However, since an automatic valve such as a solenoid valve is equipped with an actuator for opening and closing a valve, a large installation space is required and the cost of a single device may increase. On the other hand, when a manual valve for manually switching between opening and closing is adopted as the switching valves 41A and 41B, it can be installed in a small space and the cost can be reduced. However, in either case, that is, when the automatic valve is adopted as the switching valves 41A and 41B and the manual valve is adopted, there is a possibility that the maintenance staff cannot visually grasp the open / closed state of the switching valves 41A and 41B. There is. Further, when the manual switching valves 41A and 41B are adopted, there is a possibility that the control device 24 cannot detect the open / closed state as it is.
　そこで、実施形態では、充填ホース６Ａ，６Ｂへのガス供給管路５（第１供給管路５Ｂ、第２供給管路５Ｃ）に設けられた切換弁４１Ａ，４１Ｂを手動弁としている。これと共に、実施形態では、切換弁４１Ａ，４１Ｂの開閉状態を目視にて確認できる機構と、切換弁４１Ａ，４１Ｂの開閉状態を検出する機構とを備えている。即ち、図２に示すように、ガス供給管路５には、供給制御弁（流量調整弁１２、遮断弁１３）よりも下流側に位置して切換弁４１Ａ，４１Ｂが設けられている。切換弁４１Ａ，４１Ｂは、ガス供給管路５（第１供給管路５Ｂ、第２供給管路５Ｃ）内の開閉状態を切換える。実施形態では、ガス供給経路であるガス供給管路５は、複数の経路となる第１供給管路５Ｂと第２供給管路５Ｃとを備えている。そして、切換弁４１Ａ，４１Ｂは、複数の経路、即ち、第１供給管路５Ｂと第２供給管路５Ｃとのそれぞれに設けられている。なお、切換弁４１Ａ，４１Ｂの位置は、供給制御弁（流量調整弁１２、遮断弁１３）よりも上流側に設けられてもよい。 Therefore, in the embodiment, the switching valves 41A and 41B provided in the gas supply line 5 (first supply line 5B, second supply line 5C) to the filling hoses 6A and 6B are used as manual valves. At the same time, the embodiment includes a mechanism for visually confirming the open / closed state of the switching valves 41A and 41B and a mechanism for detecting the opened / closed state of the switching valves 41A and 41B. That is, as shown in FIG. 2, the gas supply pipeline 5 is provided with switching valves 41A and 41B located on the downstream side of the supply control valves (flow rate adjusting valve 12, shutoff valve 13). The switching valves 41A and 41B switch the open / closed state in the gas supply line 5 (first supply line 5B, second supply line 5C). In the embodiment, the gas supply line 5 which is a gas supply path includes a first supply line 5B and a second supply line 5C which are a plurality of paths. The switching valves 41A and 41B are provided in a plurality of paths, that is, in the first supply line 5B and the second supply line 5C, respectively. The positions of the switching valves 41A and 41B may be provided on the upstream side of the supply control valve (flow rate adjusting valve 12, shutoff valve 13).
　切換弁４１Ａ，４１Ｂは、手動で切換えられる手動切換弁、より具体的には、ニードル弁である。切換弁４１Ａ，４１Ｂは、内蔵された弁体（ニードル）がハンドル４２によって上下に変位することにより開弁量が変化する。即ち、切換弁４１Ａ，４１Ｂは、ハンドル４２の回転により内蔵された弁体が下がることにより、水素ガスの流通が遮断される閉位置（遮断位置）となり、ハンドル４２の回転により弁体が上がることにより、水素ガスが流通する開位置（連通位置）となる。 The switching valves 41A and 41B are manual switching valves that can be switched manually, more specifically, needle valves. The valve opening amount of the switching valves 41A and 41B changes when the built-in valve body (needle) is displaced up and down by the handle 42. That is, the switching valves 41A and 41B are in the closed position (blocking position) where the flow of hydrogen gas is blocked by lowering the valve body built in by the rotation of the handle 42, and the valve body is raised by the rotation of the handle 42. As a result, it becomes an open position (communication position) where hydrogen gas flows.
　切換弁４１Ａ，４１Ｂには、切換弁４１Ａ，４１Ｂの切換え状態（開閉状態）を表示する表示部としてのレバー部４６が設けられている。より具体的には、切換弁４１Ａ，４１Ｂには、切換弁４１Ａ，４１Ｂの切換え状態を表示すると共に切換え状態を検出するための開閉状態表示検出機構４３，４３が隣接して設けられている。なお、実施形態では、開閉状態表示検出機構４３，４３と切換弁４１Ａ，４１Ｂとをそれぞれ別体（別部材、別部品）としているが、開閉状態表示検出機構４３，４３と切換弁４１Ａ，４１Ｂとを一体に構成してもよい。即ち、図３および図４に示すように、実施形態では、開閉状態表示検出機構４３と切換弁４１Ａ（４１Ｂ）とが、それぞれ別々に設置面に固定されているが、例えば、開閉状態表示検出機構４３のレバー取付ブラケット４４を切換弁４１Ａ（４１Ｂ）に固定することにより、開閉状態表示検出機構４３を切換弁４１Ａ（４１Ｂ）と一体に設ける構成としてもよい。 The switching valves 41A and 41B are provided with a lever portion 46 as a display unit for displaying the switching state (opening / closing state) of the switching valves 41A and 41B. More specifically, the switching valves 41A and 41B are adjacent to the switching state display detecting mechanisms 43 and 43 for displaying the switching state of the switching valves 41A and 41B and detecting the switching state. In the embodiment, the open / close state display detection mechanisms 43 and 43 and the switching valves 41A and 41B are separate bodies (separate members and separate parts), but the open / close state display detection mechanisms 43 and 43 and the switching valves 41A and 41B are separated from each other. And may be integrally configured. That is, as shown in FIGS. 3 and 4, in the embodiment, the open / close state display detection mechanism 43 and the switching valve 41A (41B) are separately fixed to the installation surface, but for example, the open / close state display detection is performed. By fixing the lever mounting bracket 44 of the mechanism 43 to the switching valve 41A (41B), the open / close state display detection mechanism 43 may be provided integrally with the switching valve 41A (41B).
　開閉状態表示検出機構４３は、レバー取付ブラケット４４と、レバー支持部４５と、レバー部４６とを備えている。また、開閉状態表示検出機構４３は、検出手段としてのリミットスイッチ４７をさらに備えている。レバー取付ブラケット４４は、開閉状態表示検出機構４３のベースフレームである。レバー取付ブラケット４４は、例えば、金属製の板体を折り曲げ加工することにより形成されており、固定板部４４Ａと、立ち上がり板部４４Ｂと、支持板部４４Ｃとを備えている。 The open / close state display detection mechanism 43 includes a lever mounting bracket 44, a lever support portion 45, and a lever portion 46. Further, the open / closed state display detection mechanism 43 further includes a limit switch 47 as a detection means. The lever mounting bracket 44 is a base frame of the open / closed state display detection mechanism 43. The lever mounting bracket 44 is formed by, for example, bending a metal plate body, and includes a fixing plate portion 44A, a rising plate portion 44B, and a support plate portion 44C.
　固定板部４４Ａは、設置面に取付けられる。立ち上がり板部４４Ｂは、固定板部４４Ａから上方に延びており、立ち上がり板部４４Ｂには、リミットスイッチ４７が取付けられている。支持板部４４Ｃは、立ち上がり板部４４Ｂの上端側から水平方向に延び、レバー支持部４５が取付けられている。 The fixing plate portion 44A is attached to the installation surface. The rising plate portion 44B extends upward from the fixed plate portion 44A, and a limit switch 47 is attached to the rising plate portion 44B. The support plate portion 44C extends in the horizontal direction from the upper end side of the rising plate portion 44B, and the lever support portion 45 is attached to the support plate portion 44C.
　レバー支持部４５は、レバー取付ブラケット４４に対してレバー部４６を回転可能に支持する。即ち、図３および図４に示すように、レバー支持部４５は、上下方向に延びる鉛直軸を中心として、レバー部４６をレバー取付ブラケット４４に対して回転可能に支持している。レバー部４６は、基端側がレバー取付ブラケット４４の支持板部４４Ｃにレバー支持部４５を介して回転可能に支持されている。 The lever support portion 45 rotatably supports the lever portion 46 with respect to the lever mounting bracket 44. That is, as shown in FIGS. 3 and 4, the lever support portion 45 rotatably supports the lever portion 46 with respect to the lever mounting bracket 44 about a vertical axis extending in the vertical direction. The base end side of the lever portion 46 is rotatably supported by the support plate portion 44C of the lever mounting bracket 44 via the lever support portion 45.
　レバー部４６は、切換弁４１Ａ（４１Ｂ）の動作に応じて切換え状態の表示が切換え可能である。即ち、レバー部４６は、切換弁４１Ａ（４１Ｂ）の切換え状態が閉（閉弁）である旨を表示するための表示部（閉弁表示部）に相当する。換言すれば、切換弁４１Ａ（４１Ｂ）の切換え状態を表示する表示部は、切換弁４１Ａ（４１Ｂ）が閉のときに、閉の表示に対応する位置（図３および図４の（Ｂ）の位置）に移動可能なカバー部としてのレバー部４６である。この場合、レバー部４６は、切換弁４１Ａ（４１Ｂ）が閉のときに、切換弁４１Ａ（４１Ｂ）のハンドル４２の上側に移動可能である。 The lever portion 46 can switch the display of the switching state according to the operation of the switching valve 41A (41B). That is, the lever portion 46 corresponds to a display unit (valve closed display unit) for displaying that the switching state of the switching valve 41A (41B) is closed (valve closed). In other words, the display unit that displays the switching state of the switching valve 41A (41B) corresponds to the position corresponding to the display of closing when the switching valve 41A (41B) is closed (in FIG. 3 and FIG. 4B). The lever portion 46 as a cover portion that can be moved to the position). In this case, the lever portion 46 can move to the upper side of the handle 42 of the switching valve 41A (41B) when the switching valve 41A (41B) is closed.
　ここで、図３および図４の（Ａ）は、開弁時、即ち、係員がハンドル４２を時計回りまたは反時計回りに回してハンドル４２を上げることにより、切換弁４１Ａ（４１Ｂ）を開弁状態とした場合を示している。この場合、レバー部４６は、ハンドル４２から離間した位置（開弁位置）となっている。即ち、この場合は、レバー部４６をハンドル４２側に向けて回そうとしても、レバー部４６がハンドル４２と干渉するため、レバー部４６をハンドル４２の上方に位置させることはできない。 Here, in FIGS. 3 and 4A, the switching valve 41A (41B) is opened when the valve is opened, that is, when the staff member turns the handle 42 clockwise or counterclockwise to raise the handle 42. It shows the case where it is in a state. In this case, the lever portion 46 is at a position (valve opening position) away from the handle 42. That is, in this case, even if the lever portion 46 is turned toward the handle 42 side, the lever portion 46 interferes with the handle 42, so that the lever portion 46 cannot be positioned above the handle 42.
　これに対して、図３および図４の（Ｂ）は、閉弁時、即ち、係員がハンドル４２を反時計回りまたは時計回りに回してハンドル４２を下げることにより、切換弁４１Ａ（４１Ｂ）を閉弁状態とした場合を示している。この場合、レバー部４６は、ハンドル４２の上方に位置させることができる。即ち、この場合は、図４の（Ｂ）に示すように、ハンドル４２がレバー部４６の高さ位置よりも下側となる。このため、レバー部４６をレバー支持部４５の鉛直軸を中心として図３および図４の（Ａ）に示す位置からハンドル４２側に向けて回動させると、レバー部４６がハンドル４２と干渉せずに、レバー部４６をハンドル４２上に位置させることができる。 On the other hand, in FIGS. 3 and 4B, when the valve is closed, that is, the staff turns the handle 42 counterclockwise or clockwise to lower the handle 42, thereby lowering the switching valve 41A (41B). The case where the valve is closed is shown. In this case, the lever portion 46 can be positioned above the handle 42. That is, in this case, as shown in FIG. 4B, the handle 42 is below the height position of the lever portion 46. Therefore, when the lever portion 46 is rotated toward the handle 42 from the position shown in FIGS. 3 and 4 (A) about the vertical axis of the lever support portion 45, the lever portion 46 interferes with the handle 42. Instead, the lever portion 46 can be positioned on the handle 42.
　係員は、切換弁４１Ａ（４１Ｂ）を閉弁状態としたときに、レバー部４６を図３および図４の（Ａ）に示す位置から（Ｂ）に示す位置に回動させることができる。これにより、係員は、切換弁４１Ａ（４１Ｂ）が閉弁しているか開弁しているかを、レバー部４６をハンドル４２側に向けて回動させることができるか否かにより判定することができる。また、係員は、レバー部４６がハンドル４２上に位置しているときは、切換弁４１Ａ（４１Ｂ）が閉弁していることを目視により容易に判定することができる。 When the switching valve 41A (41B) is closed, the clerk can rotate the lever portion 46 from the position shown in (A) of FIGS. 3 and 4 to the position shown in (B). Thereby, the clerk can determine whether the switching valve 41A (41B) is closed or opened by whether or not the lever portion 46 can be rotated toward the handle 42 side. .. Further, when the lever portion 46 is located on the handle 42, the clerk can easily visually determine that the switching valve 41A (41B) is closed.
　ここで、図５にも示すように、レバー部４６は、水平方向に延びる把持板部４６Ａと、把持板部４６Ａから下側に向けて延びる爪状のスイッチ接触部４６Ｂとを有している。把持板部４６Ａは、切換弁４１Ａ（４１Ｂ）が閉弁しているとき、換言すれば、ハンドル４２が最下位置のときに、係員の回動操作によって、ハンドル４２の上側、かつ、中央部に位置させることができる。即ち、レバー部４６の把持板部４６Ａは、係員によって、ハンドル４２の上側の位置（閉弁位置）とハンドル４２から離れた位置（開弁位置）とに回動させることができる。スイッチ接触部４６Ｂは、レバー部４６（把持板部４６Ａ）が閉弁位置のときに、レバー取付ブラケット４４に設けられたリミットスイッチ４７の押圧部４７Ａと接触し、リミットスイッチ４７をＯＮ位置に切換えることができる。 Here, as also shown in FIG. 5, the lever portion 46 has a grip plate portion 46A extending in the horizontal direction and a claw-shaped switch contact portion 46B extending downward from the grip plate portion 46A. .. When the switching valve 41A (41B) is closed, in other words, when the handle 42 is in the lowest position, the grip plate portion 46A is located on the upper side and the center portion of the handle 42 by the rotation operation of the staff. Can be located in. That is, the grip plate portion 46A of the lever portion 46 can be rotated to a position on the upper side of the handle 42 (valve closed position) and a position away from the handle 42 (valve open position) by a staff member. The switch contact portion 46B contacts the pressing portion 47A of the limit switch 47 provided on the lever mounting bracket 44 when the lever portion 46 (grip plate portion 46A) is in the valve closed position, and switches the limit switch 47 to the ON position. be able to.
　リミットスイッチ４７は、レバー部４６の位置を検出する。リミットスイッチ４７は、図示しない接点と、接点を切換えるための押圧部４７Ａとを備えている。押圧部４７Ａは、レバー部４６が閉弁位置のときに、レバー部４６のスイッチ接触部４６Ｂに押圧される。即ち、リミットスイッチ４７は、押圧部４７Ａがスイッチ接触部４６Ｂと接触することにより下方に向けて押圧されると、接点がＯＦＦ位置からＯＮ位置に切換わる。これにより、リミットスイッチ４７は、レバー部４６の位置、延いては、切換弁４１Ａ（４１Ｂ）の切換え状態（閉弁状態であるか否か）を検出する。 The limit switch 47 detects the position of the lever portion 46. The limit switch 47 includes a contact (not shown) and a pressing portion 47A for switching the contact. The pressing portion 47A is pressed against the switch contact portion 46B of the lever portion 46 when the lever portion 46 is in the valve closed position. That is, when the pressing portion 47A is pressed downward by contacting the switch contact portion 46B, the limit switch 47 switches from the OFF position to the ON position. As a result, the limit switch 47 detects the position of the lever portion 46 and, by extension, the switching state (whether or not the valve is closed) of the switching valve 41A (41B).
　リミットスイッチ４７は、制御装置２４と接続されており、ＯＮ位置のときに、レバー部４６がハンドル４２の上方に位置している旨のＯＮ信号、換言すれば、切換弁４１Ａ（４１Ｂ）が閉弁している旨のＯＮ信号を制御装置２４に出力する。これにより、制御装置２４は、切換弁４１Ａ，４１Ｂが開弁しているか閉弁しているかを判定することができる。制御装置２４は、リミットスイッチ４７の検出に応じて、供給制御弁である流量調整弁１２および／または遮断弁１３を開閉制御する。なお、制御装置２４による制御、即ち、図６に示す水素ガスの充填制御の処理については、後で詳しく述べる。 The limit switch 47 is connected to the control device 24, and when it is in the ON position, the ON signal indicating that the lever portion 46 is located above the handle 42, in other words, the switching valve 41A (41B) is closed. An ON signal indicating that the valve is being valved is output to the control device 24. Thereby, the control device 24 can determine whether the switching valves 41A and 41B are open or closed. The control device 24 controls the opening / closing of the flow rate adjusting valve 12 and / or the shutoff valve 13, which are supply control valves, in response to the detection of the limit switch 47. The control by the control device 24, that is, the hydrogen gas filling control process shown in FIG. 6 will be described in detail later.
　いずれにしても、実施形態では、切換弁４１Ａ，４１Ｂの近傍にリミットスイッチ４７，４７が設けられている。そして、図３および図４の（Ｂ）に示すように、レバー部４６を切換弁４１Ａ（４１Ｂ）のハンドル４２側に移動させることにより、リミットスイッチ４７がＯＮとなる。レバー部４６は、切換弁４１Ａ（４１Ｂ）のハンドル４２が最下位置となる閉弁位置のときにのみ回動させることができる。即ち、切換弁４１Ａ（４１Ｂ）のハンドル４２を操作し、切換弁４１Ａ（４１Ｂ）を閉弁させたときに、レバー部４６の把持板部４６Ａは、ハンドル４２の上側となる位置にまで回動させることができる。 In any case, in the embodiment, the limit switches 47 and 47 are provided in the vicinity of the switching valves 41A and 41B. Then, as shown in FIGS. 3 and 4B, the limit switch 47 is turned on by moving the lever portion 46 toward the handle 42 of the switching valve 41A (41B). The lever portion 46 can be rotated only when the handle 42 of the switching valve 41A (41B) is in the lowest position at the closed position. That is, when the handle 42 of the switching valve 41A (41B) is operated to close the switching valve 41A (41B), the grip plate portion 46A of the lever portion 46 rotates to a position above the handle 42. Can be made to.
　レバー部４６の把持板部４６Ａをハンドル４２の上側となる位置まで回動すると、レバー部４６のスイッチ接触部４６Ｂによりリミットスイッチ４７を作動させることができる。これに対して、切換弁４１Ａ（４１Ｂ）のハンドル４２が最下位置となる閉位置以外のときは、ハンドル４２の位置がレバー部４６の把持板部４６Ａと干渉する位置となるため、リミットスイッチ４７を作動させる位置までレバー部４６（スイッチ接触部４６Ｂ）を移動（回動）させることができない。 When the grip plate portion 46A of the lever portion 46 is rotated to a position above the handle 42, the limit switch 47 can be operated by the switch contact portion 46B of the lever portion 46. On the other hand, when the handle 42 of the switching valve 41A (41B) is not in the closed position at the lowest position, the position of the handle 42 interferes with the grip plate portion 46A of the lever portion 46, so that the limit switch is used. The lever portion 46 (switch contact portion 46B) cannot be moved (rotated) to the position where the 47 is operated.
　図３および図４の（Ｂ）に示すように、レバー部４６が閉弁位置のとき、即ち、切換弁４１Ａ（４１Ｂ）が閉弁しているときは、レバー部４６の把持板部４６Ａをハンドル４２の上側の中央部に位置させることができる。これにより、レバー部４６（把持板部４６Ａ）は、ハンドル４２の操作を妨げると共に、レバー部４６（把持板部４６Ａ）に記載された「閉」の文字、および、レバー部４６（把持板部４６Ａ）がハンドル４２上に位置していることによって、切換弁４１Ａ（４１Ｂ）が閉弁していることを容易に確認することができる。 As shown in FIGS. 3 and 4B, when the lever portion 46 is in the valve closed position, that is, when the switching valve 41A (41B) is closed, the grip plate portion 46A of the lever portion 46 is pressed. It can be located in the upper center of the handle 42. As a result, the lever portion 46 (grip plate portion 46A) hinders the operation of the handle 42, and the character "closed" written on the lever portion 46 (grip plate portion 46A) and the lever portion 46 (grip plate portion) 46 (grip plate portion). Since the 46A) is located on the handle 42, it can be easily confirmed that the switching valve 41A (41B) is closed.
　実施形態による水素ガス充填装置１は、上述の如き構成を有するもので、次に、水素ガス充填装置１による水素ガスの充填作業について説明する。 The hydrogen gas filling device 1 according to the embodiment has the above-mentioned configuration, and next, the hydrogen gas filling operation by the hydrogen gas filling device 1 will be described.
　車両３１の被充填タンク３２に水素ガスを充填するときに、充填作業を行う作業者は、第１充填ノズル７Ａ（または第２充填ノズル７Ｂ）を第１ノズル掛け２６Ａ（または第２ノズル掛け２６Ｂ）から取外す。以下、第１充填ノズル７Ａにより水素ガスを充填する場合を説明するが、第２充填ノズル７Ｂについても同様である。 When filling the filled tank 32 of the vehicle 31 with hydrogen gas, the operator performing the filling operation attaches the first filling nozzle 7A (or the second filling nozzle 7B) to the first nozzle hook 26A (or the second nozzle hook 26B). ) To remove it. Hereinafter, the case where hydrogen gas is filled by the first filling nozzle 7A will be described, but the same applies to the second filling nozzle 7B.
　図１中に示すように、第１充填ノズル７Ａを被充填タンク３２の充填口３２Ａに接続し、当該接続部位をロックする。この状態で、充填作業の作業者が充填開始スイッチ２０をＯＮ操作すると、制御装置２４は、流量調整弁１２と遮断弁１３に開弁信号を出力して流量調整弁１２と遮断弁１３を開弁させる。これにより、ガス蓄圧器２内の水素ガスは、ガス供給管路５（メイン供給管路５Ａ、第１供給管路５Ｂ）、第１充填ホース６Ａおよび第１充填ノズル７Ａを通じて車両３１の被充填タンク３２に充填される。制御装置２４は、例えば流量計１７、圧力センサ１８、温度センサ１９の測定結果を監視しつつ、流量調整弁１２の開度等を予め設定された制御方式（定圧上昇制御方式または定流量制御方式）等で調整する。これにより、ガス供給管路５内に供給される水素ガスの圧力、流量を適切な流通状態に制御することができる。 As shown in FIG. 1, the first filling nozzle 7A is connected to the filling port 32A of the tank to be filled 32, and the connection portion is locked. In this state, when the filling work operator turns on the filling start switch 20, the control device 24 outputs a valve opening signal to the flow rate adjusting valve 12 and the shutoff valve 13 to open the flow rate adjusting valve 12 and the shutoff valve 13. Let me speak. As a result, the hydrogen gas in the gas accumulator 2 is filled in the vehicle 31 through the gas supply line 5 (main supply line 5A, first supply line 5B), the first filling hose 6A, and the first filling nozzle 7A. The tank 32 is filled. The control device 24 monitors, for example, the measurement results of the flow meter 17, the pressure sensor 18, and the temperature sensor 19, and controls the opening degree of the flow rate adjusting valve 12 in advance (constant pressure rise control method or constant flow control method). ) Etc. Thereby, the pressure and the flow rate of the hydrogen gas supplied in the gas supply pipe 5 can be controlled to an appropriate distribution state.
　このとき、制御装置２４は、流量計１７からの流量パルスを積算して水素ガスの充填量（質量）を演算し、水素ガスの充填量が予め設定された目標充填量に達するか、または圧力センサ１８により検出した水素ガスの圧力が予め設定された目標充填圧力（目標充填圧）に達したか否かを判定する。目標とする充填量（圧力）に達したと判定したときには、制御装置２４からの信号により流量調整弁１２および遮断弁１３が閉弁され、被充填タンク３２への水素ガスの充填が終了される。なお、作業者が充填停止スイッチ２１を操作した場合にも、充填作業は終了される。 At this time, the control device 24 integrates the flow rate pulse from the flow meter 17 to calculate the hydrogen gas filling amount (mass), and the hydrogen gas filling amount reaches a preset target filling amount or the pressure. It is determined whether or not the pressure of the hydrogen gas detected by the sensor 18 has reached a preset target filling pressure (target filling pressure). When it is determined that the target filling amount (pressure) has been reached, the flow rate adjusting valve 12 and the isolation valve 13 are closed by the signal from the control device 24, and the filling of the filled tank 32 with hydrogen gas is completed. .. The filling operation is also completed when the operator operates the filling stop switch 21.
　次に、この状態で制御装置２４は充填終了制御処理を実行する。この充填終了制御処理では、制御装置２４からの信号により脱圧弁２３を閉弁状態から開弁するように制御する。そして、脱圧弁２３が開弁したときには、脱圧管路２２が大気に開放されることにより、充填ノズル７Ａ，７Ｂ側のガスが外部に放出されて第１充填ノズル７Ａの圧力が大気圧レベルに減圧される。この状態で、作業者は第１充填ノズル７Ａの接続カプラを被充填タンク３２の充填口３２Ａから取外すことができる。 Next, in this state, the control device 24 executes the filling end control process. In this filling end control process, the decompression valve 23 is controlled to be opened from the closed state by a signal from the control device 24. Then, when the decompression valve 23 is opened, the decompression pipeline 22 is opened to the atmosphere, so that the gas on the filling nozzles 7A and 7B sides is discharged to the outside, and the pressure of the first filling nozzle 7A becomes the atmospheric pressure level. It is depressurized. In this state, the operator can remove the connecting coupler of the first filling nozzle 7A from the filling port 32A of the tank 32 to be filled.
　被充填タンク３２の充填口３２Ａから取外された第１充填ノズル７Ａは、作業者によってディスペンサ筐体４側の第１ノズル掛け２６Ａに戻され、手動操作により掛止めされる。第１ノズル掛け２６Ａに設けられた第１ノズル検出器２７Ａは、第１充填ノズル７Ａが第１ノズル掛け２６Ａに戻されたか否かを検出する。第１充填ノズル７Ａが第１ノズル掛け２６Ａに戻されて掛止めされると、第１ノズル検出器２７Ａからの検出信号が制御装置２４に出力される。これにより、制御装置２４は、第１充填ノズル７Ａによる充填作業が終了したと判定し、次回の充填作業に対する待機状態となる。 The first filling nozzle 7A removed from the filling port 32A of the tank 32 to be filled is returned to the first nozzle hook 26A on the dispenser housing 4 side by the operator, and is hooked by a manual operation. The first nozzle detector 27A provided on the first nozzle hook 26A detects whether or not the first filling nozzle 7A has been returned to the first nozzle hook 26A. When the first filling nozzle 7A is returned to the first nozzle hook 26A and hooked, the detection signal from the first nozzle detector 27A is output to the control device 24. As a result, the control device 24 determines that the filling work by the first filling nozzle 7A has been completed, and is in a standby state for the next filling work.
　また、水素ガス充填装置１のメンテナンスを行うときに、係員は、必要に応じて、第１切換弁４１Ａまたは第２切換弁４１Ｂを閉弁する。例えば、係員は、第１供給管路５Ｂ、第１充填ホース６Ａ、第１充填ノズル７Ａ、第１緊急離脱カップリング８Ａ、第１ノズル掛け２６Ａ等のメンテナンスを行うときに、第１切換弁４１Ａのハンドル４２をハンドル４２が下がる方向に回転させ、第１切換弁４１Ａを閉弁する。係員は、第１切換弁４１Ａを閉弁したら、第１切換弁４１Ａ側の開閉状態表示検出機構４３のレバー部４６を図３および図４の（Ｂ）に示す位置に回動させる。これにより、係員は、第１切換弁４１Ａが閉弁していることを目視により把握することができる。また、レバー部４６のスイッチ接触部４６Ｂによってリミットスイッチ４７の押圧部４７Ａが下側に向けて押圧される。これにより、リミットスイッチ４７からＯＮ信号が制御装置２４に出力される。制御装置２４は、リミットスイッチ４７からＯＮ信号により、第１切換弁４１Ａが閉弁状態であると判定することができる。 Further, when performing maintenance of the hydrogen gas filling device 1, the staff member closes the first switching valve 41A or the second switching valve 41B as necessary. For example, the staff member performs maintenance on the first supply pipe line 5B, the first filling hose 6A, the first filling nozzle 7A, the first emergency disconnection coupling 8A, the first nozzle hook 26A, and the like, and the first switching valve 41A. The handle 42 is rotated in the direction in which the handle 42 is lowered, and the first switching valve 41A is closed. After closing the first switching valve 41A, the clerk rotates the lever portion 46 of the open / close state display detection mechanism 43 on the first switching valve 41A side to the positions shown in FIGS. 3 and 4B. As a result, the staff member can visually grasp that the first switching valve 41A is closed. Further, the pressing portion 47A of the limit switch 47 is pressed downward by the switch contact portion 46B of the lever portion 46. As a result, the ON signal is output from the limit switch 47 to the control device 24. The control device 24 can determine that the first switching valve 41A is in the closed state by the ON signal from the limit switch 47.
　同様に、第２供給管路５Ｃ、第２充填ホース６Ｂ、第２充填ノズル７Ｂ、第２緊急離脱カップリング８Ｂ、第２ノズル掛け２６Ｂ等のメンテナンスを行うときに、係員は、第２切換弁４１Ｂのハンドル４２をハンドル４２が下がる方向に回転させ、第２切換弁４１Ｂを閉弁する。係員は、第２切換弁４１Ｂを閉弁したら、第２切換弁４１Ｂ側の開閉状態表示検出機構４３のレバー部４６を図３および図４の（Ｂ）に示す位置に回動させる。これにより、係員は、第２切換弁４１Ｂが閉弁していることを目視により把握することができる。また、レバー部４６のスイッチ接触部４６Ｂによってリミットスイッチ４７の押圧部４７Ａが下側に向けて押圧される。これにより、リミットスイッチ４７からＯＮ信号が制御装置２４に出力される。制御装置２４は、リミットスイッチ４７からＯＮ信号により、第２切換弁４１Ｂが閉弁状態であると判定することができる。 Similarly, when performing maintenance on the second supply pipe line 5C, the second filling hose 6B, the second filling nozzle 7B, the second emergency disconnection coupling 8B, the second nozzle hook 26B, etc., the staff member is in charge of the second switching valve. The handle 42 of the 41B is rotated in the direction in which the handle 42 is lowered, and the second switching valve 41B is closed. After closing the second switching valve 41B, the clerk rotates the lever portion 46 of the open / close state display detection mechanism 43 on the second switching valve 41B side to the positions shown in FIGS. 3 and 4B. As a result, the staff member can visually grasp that the second switching valve 41B is closed. Further, the pressing portion 47A of the limit switch 47 is pressed downward by the switch contact portion 46B of the lever portion 46. As a result, the ON signal is output from the limit switch 47 to the control device 24. The control device 24 can determine that the second switching valve 41B is in the closed state by the ON signal from the limit switch 47.
　次に、制御装置２４で行われる制御処理（水素ガスの充填制御処理）について、図６を参照しつつ説明する。なお、図６の制御処理は、例えば、制御装置２４に通電している間、所定の制御周期（例えば、１０ms）で繰り返し実行される。 Next, the control process (hydrogen gas filling control process) performed by the control device 24 will be described with reference to FIG. The control process of FIG. 6 is repeatedly executed, for example, in a predetermined control cycle (for example, 10 ms) while the control device 24 is energized.
　制御装置２４が起動すると、図６の制御処理が開始される。制御装置２４は、Ｓ１で、充填ノズル７Ａ，７Ｂがノズル掛け２６Ａ，２６Ｂから外されたか否かを判定する。この判定は、ノズル検出器２７Ａ，２７Ｂの検出信号（ＯＮ信号またはＯＦＦ信号）により判定することができる。Ｓ１で「ＮＯ」、即ち、充填ノズル７Ａ，７Ｂがノズル掛け２６Ａ，２６Ｂから外されていないと判定された場合は、Ｓ１の処理を繰り返す。この場合は、充填作業が開始される前の待機状態であり、充填ノズル７Ａ，７Ｂがノズル掛け２６Ａ，２６Ｂから取外されるのを待機する。一方、Ｓ１で「ＹＥＳ」、即ち、充填ノズル７Ａ（または充填ノズル７Ｂ）がノズル掛け２６Ａ（またはノズル掛け２６Ｂ）から外されたと判定された場合は、Ｓ２に進む。 When the control device 24 is activated, the control process shown in FIG. 6 is started. The control device 24 determines in S1 whether or not the filling nozzles 7A and 7B have been removed from the nozzle hooks 26A and 26B. This determination can be made by the detection signals (ON signal or OFF signal) of the nozzle detectors 27A and 27B. If it is determined in S1 that "NO", that is, the filling nozzles 7A and 7B are not removed from the nozzle hooks 26A and 26B, the process of S1 is repeated. In this case, it is a standby state before the filling operation is started, and waits for the filling nozzles 7A and 7B to be removed from the nozzle hooks 26A and 26B. On the other hand, if "YES" in S1, that is, it is determined that the filling nozzle 7A (or filling nozzle 7B) has been removed from the nozzle hook 26A (or nozzle hook 26B), the process proceeds to S2.
　Ｓ２では、ノズル掛け２６Ａ（または２６Ｂ）から外された充填ノズル７Ａ（または７Ｂ）側の切換弁４１Ａ（または４１Ｂ）が「開」であるか否かを判定する。この判定は、ノズル検出器２７Ａ，２７Ｂの信号とリミットスイッチ４７，４７の信号とから判定することができる。この場合、制御装置２４は、例えば、リミットスイッチ４７からＯＮ信号が入力されていない場合は、当該リミットスイッチ４７が設けられた側の切換弁４１Ａ（または４１Ｂ）が「開」であると判定することができる。 In S2, it is determined whether or not the switching valve 41A (or 41B) on the filling nozzle 7A (or 7B) side removed from the nozzle hook 26A (or 26B) is "open". This determination can be made from the signals of the nozzle detectors 27A and 27B and the signals of the limit switches 47 and 47. In this case, for example, when the ON signal is not input from the limit switch 47, the control device 24 determines that the switching valve 41A (or 41B) on the side where the limit switch 47 is provided is "open". be able to.
　Ｓ２で「ＮＯ」、即ち、外された充填ノズル７Ａ（または７Ｂ）側の切換弁４１Ａ（または４１Ｂ）が「開」でないと判定された場合は、Ｓ３に進む。この場合は、外された充填ノズル７Ａ（または７Ｂ）側の切換弁４１Ａ（または４１Ｂ）が「閉」であるため、充填を行うことができない。このため、Ｓ３で、アラーム表示を行う。即ち、制御装置２４は、ディスペンサユニット３の表示部２５に切換弁４１Ａ（または４１Ｂ）が閉である旨の表示を行う。Ｓ３でアラーム表示を行ったら、Ｓ１に戻り、Ｓ１以降の処理を繰り返す。 If it is determined in S2 that "NO", that is, the switching valve 41A (or 41B) on the removed filling nozzle 7A (or 7B) side is not "open", the process proceeds to S3. In this case, since the switching valve 41A (or 41B) on the removed filling nozzle 7A (or 7B) side is "closed", filling cannot be performed. Therefore, an alarm is displayed in S3. That is, the control device 24 displays on the display unit 25 of the dispenser unit 3 that the switching valve 41A (or 41B) is closed. After displaying the alarm in S3, the process returns to S1 and the processing after S1 is repeated.
　一方、Ｓ２で「ＹＥＳ」、即ち、外された充填ノズル７Ａ（または７Ｂ）側の切換弁４１Ａ（または４１Ｂ）が「開」であると判定された場合は、Ｓ４に進む。Ｓ４では、充填制御処理を行う。即ち、Ｓ４では、充填開始スイッチ２０がＯＮ操作されると、流量調整弁１２と遮断弁１３を開弁し、ガス蓄圧器２内から被充填タンク３２に対して水素ガスの充填を行う。このとき、制御装置２４は、例えば流量計１７、圧力センサ１８、温度センサ１９の測定結果を監視しつつ、流量調整弁１２の開度等を予め設定された制御方式で調整する。これにより、ガス供給管路５内に供給される水素ガスの圧力、流量を適切な流通状態に制御する。 On the other hand, if it is determined in S2 that "YES", that is, the switching valve 41A (or 41B) on the removed filling nozzle 7A (or 7B) side is "open", the process proceeds to S4. In S4, a filling control process is performed. That is, in S4, when the filling start switch 20 is turned on, the flow rate adjusting valve 12 and the isolation valve 13 are opened, and the filled tank 32 is filled with hydrogen gas from inside the gas accumulator 2. At this time, the control device 24 adjusts the opening degree of the flow rate adjusting valve 12 and the like by a preset control method while monitoring the measurement results of the flow meter 17, the pressure sensor 18, and the temperature sensor 19, for example. As a result, the pressure and flow rate of the hydrogen gas supplied in the gas supply pipe 5 are controlled to an appropriate distribution state.
　Ｓ４に続くＳ５では、水素ガスの充填が終了したか否かを判定する。具体的には、水素ガスの充填量または充填圧が予め設定された目標値に達したか否かを判定する。Ｓ５で「ＮＯ」、即ち、水素ガスの充填量または充填圧が予め設定された目標値に達していないと判定された場合は、Ｓ５の処理を繰り返す。この場合は、被充填タンク３２に対する水素ガスの充填を継続する。一方、Ｓ５で「ＹＥＳ」、即ち、水素ガスの充填量または充填圧が予め設定された目標値に達したと判定された場合は、水素ガスの充填を終了する。即ち、流量調整弁１２および遮断弁１３を閉弁し、Ｓ６に進む。作業者が充填停止スイッチ２１を操作した場合にも、Ｓ５で「ＹＥＳ」と判定されＳ６に進む。 In S5 following S4, it is determined whether or not the filling of hydrogen gas is completed. Specifically, it is determined whether or not the filling amount or filling pressure of hydrogen gas has reached a preset target value. If it is determined in S5 that "NO", that is, the filling amount or filling pressure of hydrogen gas does not reach the preset target value, the process of S5 is repeated. In this case, the filling of the filled tank 32 with hydrogen gas is continued. On the other hand, when it is determined in S5 that "YES", that is, the filling amount or filling pressure of the hydrogen gas has reached a preset target value, the filling of the hydrogen gas is terminated. That is, the flow rate adjusting valve 12 and the isolation valve 13 are closed, and the process proceeds to S6. Even when the operator operates the filling stop switch 21, "YES" is determined in S5 and the process proceeds to S6.
　Ｓ６では、充填終了制御処理を行う。Ｓ６では、脱圧弁２３を閉弁状態から開弁する。これにより、脱圧管路２２が大気に開放され、充填ノズル７Ａ，７Ｂ側の水素ガスが外部に放出されて充填ノズル７Ａ（または７Ｂ）の圧力が大気圧に減圧される。Ｓ６に続くＳ７では、充填ノズル７Ａ（または７Ｂ）がノズル掛け２６Ａ（または２６Ｂ）に戻されたか否かを判定する。 In S6, the filling end control process is performed. In S6, the decompression valve 23 is opened from the closed state. As a result, the decompression pipeline 22 is opened to the atmosphere, hydrogen gas on the filling nozzles 7A and 7B is discharged to the outside, and the pressure of the filling nozzle 7A (or 7B) is reduced to atmospheric pressure. In S7 following S6, it is determined whether or not the filling nozzle 7A (or 7B) has been returned to the nozzle hook 26A (or 26B).
　Ｓ７で「ＮＯ」、即ち、充填ノズル７Ａ（または７Ｂ）がノズル掛け２６Ａ（または２６Ｂ）に戻されていないと判定された場合は、Ｓ７の処理を繰り返す。この場合は、充填ノズル７Ａ（または７Ｂ）がノズル掛け２６Ａ（または２６Ｂ）に戻されるまで待機する。Ｓ７で「ＹＥＳ」、即ち、充填ノズル７Ａ（または７Ｂ）がノズル掛け２６Ａ（または２６Ｂ）に戻されたと判定された場合は、リターンする。即ち、リターンを介してスタートに戻り、Ｓ１以降の処理を繰り返す。 If it is determined in S7 that "NO", that is, the filling nozzle 7A (or 7B) has not been returned to the nozzle hook 26A (or 26B), the process of S7 is repeated. In this case, wait until the filling nozzle 7A (or 7B) is returned to the nozzle hook 26A (or 26B). If it is determined in S7 that "YES", that is, the filling nozzle 7A (or 7B) has been returned to the nozzle hook 26A (or 26B), a return is made. That is, the process returns to the start via the return, and the processing after S1 is repeated.
　このように、実施形態では、制御装置２４は、「ノズル検出器２７Ａ（２７Ｂ）からの信号により充填ノズル７Ａ（７Ｂ）がノズル掛け２６Ａ（２６Ｂ）から外されたこと」と「リミットスイッチ４７からの信号により充填ノズル７Ａ（７Ｂ）が接続された供給管路５Ｂ（５Ｃ）に設けられた切換弁４１Ａ（４１Ｂ）が開であること」との両方を判定する。制御装置２４は、充填ノズル７Ａ（７Ｂ）が外れており、かつ、当該充填ノズル７Ａ（７Ｂ）の供給管路５Ｂ（５Ｃ）の切換弁４１Ａ（４１Ｂ）が開であると判定された場合に、当該充填ノズル７Ａ（７Ｂ）による充填を許可する。これに対して、制御装置２４は、充填ノズル７Ａ（７Ｂ）が外れていない、または、ノズル掛け２６Ａ（２６Ｂ）から外された充填ノズル７Ａ（７Ｂ）の供給管路５Ｂ（５Ｃ）の切換弁４１Ａ（４１Ｂ）が開でないと判定された場合は、充填を禁止する。この場合、制御装置２４は、ディスペンサユニット３の表示部２５にアラーム表示、例えば、充填可能な充填ノズル７Ａ（７Ｂ）でない旨の表示、または、切換弁４１Ａ（４１Ｂ）が閉である旨の表示を行う。なお、切換弁４１Ａおよび切換弁４１Ｂがいずれも開であると判定された場合には、充填を禁止する。 As described above, in the embodiment, the control device 24 states that "the filling nozzle 7A (7B) has been removed from the nozzle hook 26A (26B) by the signal from the nozzle detector 27A (27B)" and "from the limit switch 47". The switching valve 41A (41B) provided in the supply line 5B (5C) to which the filling nozzle 7A (7B) is connected is open. " When the control device 24 determines that the filling nozzle 7A (7B) is disconnected and the switching valve 41A (41B) of the supply pipe line 5B (5C) of the filling nozzle 7A (7B) is open. , The filling nozzle 7A (7B) is allowed to fill. On the other hand, the control device 24 is a switching valve of the supply pipe line 5B (5C) of the filling nozzle 7A (7B) in which the filling nozzle 7A (7B) is not disengaged or is removed from the nozzle hook 26A (26B). If it is determined that 41A (41B) is not open, filling is prohibited. In this case, the control device 24 displays an alarm on the display unit 25 of the dispenser unit 3, for example, a display indicating that the filling nozzle 7A (7B) is not fillable, or a display indicating that the switching valve 41A (41B) is closed. I do. If it is determined that both the switching valve 41A and the switching valve 41B are open, filling is prohibited.
　なお、図６のＳ２では、ノズル検出器２７Ａ，２７Ｂの信号とリミットスイッチ４７，４７の信号とにより、外された充填ノズル７Ａ（または７Ｂ）側の切換弁４１Ａ（または４１Ｂ）が「開」であるか否かを判定する。これに対して、例えば、充填を行う作業者が充填を開始する前にディスペンサユニット３に設けられた操作パネル、操作スイッチ等を操作して充填を行う充填ノズル７Ａ（または７Ｂ）を選択（指定）する構成の場合には、選択情報（指定情報）とリミットスイッチ４７，４７の信号とに基づいて図６のＳ２の判定を行うこともできる。 In S2 of FIG. 6, the switching valve 41A (or 41B) on the filling nozzle 7A (or 7B) side that has been removed is "opened" by the signals of the nozzle detectors 27A and 27B and the signals of the limit switches 47 and 47. It is determined whether or not it is. On the other hand, for example, the filling nozzle 7A (or 7B) for filling is selected (designated) by operating the operation panel, operation switch, etc. provided on the dispenser unit 3 before the filling operator starts filling. ), The determination of S2 in FIG. 6 can be performed based on the selection information (designated information) and the signals of the limit switches 47 and 47.
　以上のように、実施形態によれば、切換弁４１Ａ，４１Ｂの切換え状態を表示する表示部（レバー部４６）を備えているため、メンテナンスを行うときに、係員は、表示部（レバー部４６）を目視することにより、切換弁４１Ａ，４１Ｂの開閉状態、即ち、切換弁４１Ａ，４１Ｂによるガス供給管路５（第１供給管路５Ｂ、第２供給管路５Ｃ）の連通、遮断状態を把握することができる。 As described above, according to the embodiment, since the display unit (lever unit 46) for displaying the switching state of the switching valves 41A and 41B is provided, the staff member can use the display unit (lever unit 46) during maintenance. ), That is, the open / closed state of the switching valves 41A and 41B, that is, the communication and shutoff states of the gas supply line 5 (first supply line 5B, second supply line 5C) by the switching valves 41A and 41B. Can be grasped.
　実施形態によれば、切換弁４１Ａ，４１Ｂは、手動切換弁であり、表示部（レバー部４６）は、切換弁４１Ａ，４１Ｂの動作（ハンドル４２の位置）に応じて切換え状態の表示が切換え可能である。このため、表示部（レバー部４６）により、切換弁４１Ａ，４１Ｂの開閉状態を容易に把握することができる。 According to the embodiment, the switching valves 41A and 41B are manual switching valves, and the display unit (lever unit 46) switches the display of the switching state according to the operation of the switching valves 41A and 41B (position of the handle 42). It is possible. Therefore, the open / closed state of the switching valves 41A and 41B can be easily grasped by the display unit (lever unit 46).
　実施形態によれば、表示部として、切換弁４１Ａ，４１Ｂが閉のときに、閉の表示に対応する位置に移動可能なレバー部４６を備えている。このため、レバー部４６が閉の表示に対応する位置に移動しているか否かにより、切換弁４１Ａ，４１Ｂが閉であるか否かを容易に把握することができる。 According to the embodiment, the display unit is provided with a lever unit 46 that can be moved to a position corresponding to the display of closure when the switching valves 41A and 41B are closed. Therefore, it is possible to easily grasp whether or not the switching valves 41A and 41B are closed depending on whether or not the lever portion 46 has moved to the position corresponding to the indication of closing.
　実施形態によれば、レバー部４６は、切換弁４１Ａ，４１Ｂが閉のときに、切換弁４１Ａ，４１Ｂのハンドル４２の上側に移動可能である。このため、切換弁４１Ａ，４１Ｂのハンドル４２の上側にレバー部４６が移動しているか否かにより、切換弁４１Ａ，４１Ｂが閉であるか否かを容易に把握することができる。 According to the embodiment, the lever portion 46 can move to the upper side of the handle 42 of the switching valves 41A and 41B when the switching valves 41A and 41B are closed. Therefore, it is possible to easily grasp whether or not the switching valves 41A and 41B are closed depending on whether or not the lever portion 46 is moved above the handle 42 of the switching valves 41A and 41B.
　実施形態によれば、レバー部４６の位置を検出する検出手段としてのリミットスイッチ４７をさらに備えている。そして、充填制御手段となる制御装置２４は、リミットスイッチ４７の検出に応じて、供給制御弁となる流量調整弁１２および遮断弁１３を開閉制御する。このため、制御装置２４は、レバー部４６の位置を検出するリミットスイッチ４７の検出に応じて、流量調整弁１２および遮断弁１３を開閉制御することができる。このため、例えば、切換弁４１Ａ，４１Ｂが閉のときに、流量調整弁１２および遮断弁１３が開弁することを阻止できる。 According to the embodiment, a limit switch 47 is further provided as a detection means for detecting the position of the lever portion 46. Then, the control device 24 serving as the filling control means controls the opening and closing of the flow rate adjusting valve 12 and the shutoff valve 13 serving as the supply control valve in response to the detection of the limit switch 47. Therefore, the control device 24 can control the opening and closing of the flow rate adjusting valve 12 and the isolation valve 13 in response to the detection of the limit switch 47 that detects the position of the lever portion 46. Therefore, for example, when the switching valves 41A and 41B are closed, it is possible to prevent the flow rate adjusting valve 12 and the isolation valve 13 from opening.
　なお、実施形態では、充填ノズル７Ａ，７Ｂが掛けられるノズル掛け２６Ａ，２６Ｂ（充填ノズル７Ａ，７Ｂを収容する収容部）をディスペンサ筐体４の左側に設ける場合を例に挙げて説明した。しかし、これに限らず、例えばノズル掛け（収容部）をディスペンサ筐体の右側に設ける構成としてもよく、これ以外の位置（例えば、正面）に設ける構成としてもよい。また、ディスペンサ筐体の近傍位置に、ノズル掛け（収容部）を別途設ける構成としてもよい。また、第１ノズル掛けと第２ノズル掛けとをディスペンサ筐体の異なる側面にそれぞれ設ける構成としてもよい。 In the embodiment, a case where the nozzle hooks 26A and 26B (accommodating portions for accommodating the filling nozzles 7A and 7B) on which the filling nozzles 7A and 7B are hung is provided on the left side of the dispenser housing 4 has been described as an example. However, the present invention is not limited to this, and for example, the nozzle hook (accommodation portion) may be provided on the right side of the dispenser housing, or may be provided at a position other than this (for example, the front surface). Further, a nozzle hook (accommodation portion) may be separately provided in the vicinity of the dispenser housing. Further, the first nozzle hook and the second nozzle hook may be provided on different side surfaces of the dispenser housing, respectively.
　実施形態では、車両３１の被充填タンク３２に圧縮された水素ガスを充填する場合を例に挙げて説明した。しかし、これに限らず、例えば、車両以外の被充填タンク（タンク、容器等）に水素ガスを充填するときに用いることもできる。また、水素ガス充填装置１のディスペンサユニット３を、他の場所に水素ガスを給送するための管路（水素給送管路）の途中に設置してもよい。さらに、燃料ガスとして水素ガスを例に挙げて説明したが、天然ガス（ＮＧ）、プロパンガス（ＬＰＧ）等の水素ガス以外の燃料ガスを用いる構成（ガス充填装置）としてもよい。 In the embodiment, a case where the filled tank 32 of the vehicle 31 is filled with compressed hydrogen gas has been described as an example. However, the present invention is not limited to this, and for example, it can be used when filling a tank to be filled (tank, container, etc.) other than a vehicle with hydrogen gas. Further, the dispenser unit 3 of the hydrogen gas filling device 1 may be installed in the middle of a pipeline (hydrogen supply pipeline) for supplying hydrogen gas to another place. Further, although hydrogen gas has been described as an example as the fuel gas, a configuration (gas filling device) using a fuel gas other than hydrogen gas such as natural gas (NG) and propane gas (LPG) may be used.
　実施形態では、切換弁４１Ａ，４１Ｂを手動切換弁とした場合を例に挙げて説明した。しかし、これに限らず、切換弁として、例えば、制御装置により開閉の制御が可能な電磁弁等の自動切換弁を用いてもよい。この場合、自動切換弁には、例えば、自動切換弁の切換状態（切換位置）に応じて切換え状態（例えば、「開」，「閉」）が表示される表示部を設けることができる。また、表示について「開」、「閉」に限らず、例えば、「切換中」、「未切換」や切換されていない状態(閉状態)である場合には非表示としてもよい。 In the embodiment, the case where the switching valves 41A and 41B are used as manual switching valves has been described as an example. However, the present invention is not limited to this, and as the switching valve, for example, an automatic switching valve such as a solenoid valve whose opening and closing can be controlled by a control device may be used. In this case, the automatic switching valve may be provided with, for example, a display unit that displays the switching state (for example, "open", "closed") according to the switching state (switching position) of the automatic switching valve. Further, the display is not limited to "open" and "closed", and may be hidden, for example, when "switching", "not switched", or in a non-switched state (closed state).
　実施形態では、カバー部となるレバー部４６は、切換弁４１Ａ，４１Ｂが閉のときに、切換弁４１Ａ，４１Ｂのハンドル４２の上側に移動可能な構成とした場合を例に挙げて説明した。しかし、これに限らず、例えば、カバー部（レバー部）をハンドルの下側に移動可能な構成としてもよい。この場合、例えば、切換弁のハンドルは、閉弁のときに上側に変位する構成とすることができる。そして、カバー部（レバー部）は、上側に変位したハンドルの下側に移動可能な構成とすることができる。この場合、カバー部（レバー部）には、必要に応じて、ハンドルの軸が入り込む切り欠き部を設ける構成とすることができる。また、カバー部（レバー部）は、ハンドルから突出する長さに設定することができる。 In the embodiment, the case where the lever portion 46 serving as the cover portion is configured to be movable above the handle 42 of the switching valves 41A and 41B when the switching valves 41A and 41B are closed has been described as an example. However, the present invention is not limited to this, and for example, the cover portion (lever portion) may be configured to be movable under the handle. In this case, for example, the handle of the switching valve may be configured to be displaced upward when the valve is closed. The cover portion (lever portion) can be configured to be movable to the lower side of the handle displaced upward. In this case, the cover portion (lever portion) may be provided with a notch portion into which the shaft of the handle enters, if necessary. Further, the cover portion (lever portion) can be set to a length protruding from the handle.
　実施形態では、検出手段としてのリミットスイッチ４７を用いる場合を例に挙げて説明した。しかし、これに限らず、例えば、検出手段としてハンドルの位置を検出する位置センサ、ポテンショメータ等を用いてもよい。また、検出手段および／または表示部は、切換弁に内蔵する構成としてもよい。さらに、検出手段は省略してもよい。 In the embodiment, the case where the limit switch 47 is used as the detection means has been described as an example. However, the present invention is not limited to this, and for example, a position sensor, a potentiometer, or the like that detects the position of the handle may be used as the detection means. Further, the detection means and / or the display unit may be configured to be built in the switching valve. Further, the detection means may be omitted.
　実施形態では、ガス供給経路であるガス供給管路５は、複数のガス供給経路となる第１供給管路５Ｂと第２供給管路５Ｃとを備えており、これら第１供給管路５Ｂと第２供給管路５Ｃとのそれぞれに切換弁４１Ａ，４１Ｂを設ける構成とした場合を例に挙げて説明した。しかし、これに限らず、例えば、１つのガス供給経路に１つの切換弁を設ける構成としてもよい。また、例えば、３つ以上のガス供給経路のそれぞれに切換弁を設ける構成としてもよい。 In the embodiment, the gas supply line 5 which is a gas supply path includes a first supply line 5B and a second supply line 5C which are a plurality of gas supply paths, and the first supply line 5B and the like. The case where the switching valves 41A and 41B are provided in each of the second supply line 5C and the second supply line 5C has been described as an example. However, the present invention is not limited to this, and for example, one switching valve may be provided in one gas supply path. Further, for example, a switching valve may be provided in each of the three or more gas supply paths.
　以上説明した実施形態に基づくガス充填装置として、例えば下記に述べる態様のものが考えられる。 As the gas filling device based on the embodiment described above, for example, the one described below can be considered.
　第１の態様としては、燃料ガスが蓄圧された蓄圧器に上流側が接続されたガス供給経路と、前記ガス供給経路の下流側に接続され、車両に搭載された被充填タンクに連結される充填ノズルと、前記ガス供給経路の途中に設けられ、開弁することにより前記蓄圧器内の燃料ガスを前記充填ノズルへ供給する供給制御弁と、前記供給制御弁を開閉制御することにより、前記被充填タンクへの前記燃料ガスの供給を制御する充填制御手段と、を含んで構成されたガス充填装置において、前記ガス供給経路に設けられ、前記ガス供給経路内の開閉状態を切換える切換弁と、前記切換弁に設けられ、前記切換弁の切換え状態を表示する表示部と、を備える。 In the first aspect, a gas supply path in which the upstream side is connected to the accumulator in which the fuel gas is accumulated and a filling in which the gas supply path is connected to the downstream side and connected to the filled tank mounted on the vehicle. The cover is provided by controlling the opening and closing of the nozzle, the supply control valve provided in the middle of the gas supply path and supplying the fuel gas in the accumulator to the filling nozzle by opening the valve, and the supply control valve. In a gas filling device configured to include a filling control means for controlling the supply of the fuel gas to the filling tank, a switching valve provided in the gas supply path and switching an open / closed state in the gas supply path. The switching valve is provided with a display unit for displaying the switching state of the switching valve.
　この第１の態様によれば、切換弁の切換え状態を表示する表示部を備えているため、メンテナンスを行うときに、係員は、表示部を目視することにより、切換弁の開閉状態（即ち、切換弁によるガス供給経路の連通、遮断状態）を把握することができる。 According to this first aspect, since the display unit for displaying the switching state of the switching valve is provided, the staff member can visually check the display unit to open / close the switching valve (that is, that is, when performing maintenance). It is possible to grasp the communication and cutoff state of the gas supply path by the switching valve.
　第２の態様としては、第１の態様において、前記切換弁は、手動で切換えられる手動切換弁であり、前記表示部は、前記手動切換弁の動作に応じて表示を切換え可能である。この第２の態様によれば、手動切換弁の動作に応じて切換え状態の表示が切換え可能な表示部により、手動切換弁の開閉状態を容易に把握することができる。 As a second aspect, in the first aspect, the switching valve is a manual switching valve that can be manually switched, and the display unit can switch the display according to the operation of the manual switching valve. According to this second aspect, the open / closed state of the manual switching valve can be easily grasped by the display unit capable of switching the display of the switching state according to the operation of the manual switching valve.
　第３の態様としては、第２の態様において、前記表示部は、前記手動切換弁が閉のときに、閉の表示に対応する位置に移動可能なカバー部である。この第３の態様によれば、カバー部が閉の表示に対応する位置に移動しているか否かにより、手動切換弁が閉であるか否かを容易に把握することができる。 As a third aspect, in the second aspect, the display unit is a cover unit that can be moved to a position corresponding to the display of closure when the manual switching valve is closed. According to this third aspect, it is possible to easily grasp whether or not the manual switching valve is closed depending on whether or not the cover portion has moved to the position corresponding to the indication of closing.
　第４の態様としては、第３の態様において、前記カバー部は、前記手動切換弁が閉のときに、前記手動切換弁のハンドルの上側または下側に移動可能である。この第４の態様によれば、手動切換弁のハンドルの上側または下側にカバー部が移動しているか否かにより、手動切換弁が閉であるか否かを容易に把握することができる。 As a fourth aspect, in the third aspect, the cover portion can be moved to the upper side or the lower side of the handle of the manual switching valve when the manual switching valve is closed. According to this fourth aspect, it is possible to easily grasp whether or not the manual switching valve is closed depending on whether or not the cover portion is moved to the upper side or the lower side of the handle of the manual switching valve.
　第５の態様としては、第３の態様または第４の態様において、前記カバー部の位置を検出する検出手段をさらに備え、前記充填制御手段は、前記検出手段の検出に応じて前記供給制御弁を開閉制御する。この第５の態様によれば、充填制御手段は、カバー部の位置を検出する検出手段の検出に応じて、供給制御弁を開閉制御することができる。このため、例えば、手動切換弁が閉のときに、供給制御弁が開弁することを阻止できる。 As a fifth aspect, in the third aspect or the fourth aspect, the detection means for detecting the position of the cover portion is further provided, and the filling control means is the supply control valve in response to the detection of the detection means. Open / close control. According to this fifth aspect, the filling control means can control the opening and closing of the supply control valve according to the detection of the detection means for detecting the position of the cover portion. Therefore, for example, when the manual switching valve is closed, it is possible to prevent the supply control valve from opening.
　第６の態様としては、第１の態様ないし第５の態様のいずれかにおいて、前記ガス供給経路は、複数の経路を備えており、前記切換弁は、前記複数の経路のそれぞれに設けられている。この第６の態様によれば、メンテナンスを行うときに、係員は、複数の経路にそれぞれ設けられた複数の切換弁の開閉状態（即ち、複数の経路の連通、遮断状態）をそれぞれ把握することができる。 As a sixth aspect, in any one of the first aspect to the fifth aspect, the gas supply path includes a plurality of paths, and the switching valve is provided in each of the plurality of paths. There is. According to this sixth aspect, when performing maintenance, the staff member grasps the open / closed state (that is, the communication / shutoff state of the plurality of paths) of the plurality of switching valves provided in each of the plurality of paths. Can be done.
　なお、本発明の実施形態について説明してきたが、本発明は上述した実施形態に限定されず、様々な変形例が含まれる。例えば、上述した実施形態は、本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明したすべての構成を備えるものに限定されない。また、実施形態の構成の一部について、他の構成の追加、削除、置換をすることが可能である。 Although the embodiments of the present invention have been described, the present invention is not limited to the above-described embodiments and includes various modifications. For example, the above-described embodiments have been described in detail in order to explain the present invention in an easy-to-understand manner, and are not necessarily limited to those having all the described configurations. Further, it is possible to add, delete, or replace a part of the configuration of the embodiment with another configuration.
　本願は、２０２０年９月１５日付け出願の日本国特許出願第２０２０－１５４５７５号に基づく優先権を主張する。２０２０年９月１５日付け出願の日本国特許出願第２０２０－１５４５７５号の明細書、特許請求の範囲、図面および要約書を含む全開示内容は、参照により本願に全体として組込まれる。 This application claims priority based on Japanese Patent Application No. 2020-154575 filed on September 15, 2020. The entire disclosure, including the specification, claims, drawings and abstracts of Japanese Patent Application No. 2020-154575 filed September 15, 2020, is incorporated herein by reference in its entirety.
　１　水素ガス充填装置（ガス充填装置）
　２　ガス蓄圧器（蓄圧器）
　５　ガス供給管路（ガス供給経路）
　７Ａ，７Ｂ　充填ノズル
　１２　流量調整弁（供給制御弁）
　１３　遮断弁（供給制御弁）
　２４　制御装置（充填制御手段）
　４１Ａ，４１Ｂ　切換弁（手動切換弁）
　４２　ハンドル
　４６　レバー部（表示部、カバー部）
　４７　リミットスイッチ（検出手段）
　３１　車両
　３２　被充填タンク 1 Hydrogen gas filling device (gas filling device)
2 Gas accumulator (accumulator)
5 Gas supply pipeline (gas supply route)
7A, 7B Filling nozzle 12 Flow control valve (supply control valve)
13 Isolation valve (supply control valve)
24 Control device (filling control means)
41A, 41B switching valve (manual switching valve)
42 Handle 46 Lever part (display part, cover part)
47 Limit switch (detection means)
31 Vehicle 32 Filled tank

Claims (6)

  1. 　燃料ガスが蓄圧された蓄圧器に上流側が接続されたガス供給経路と、
    　前記ガス供給経路の下流側に接続され、車両に搭載された被充填タンクに連結される充填ノズルと、
    　前記ガス供給経路の途中に設けられ、開弁することにより前記蓄圧器内の燃料ガスを前記充填ノズルへ供給する供給制御弁と、
    　前記供給制御弁を開閉制御することにより、前記被充填タンクへの前記燃料ガスの供給を制御する充填制御手段と、
    　を含んで構成されたガス充填装置において、
    　前記ガス供給経路に設けられ、前記ガス供給経路内の開閉状態を切換える切換弁と、
    　前記切換弁に設けられ、前記切換弁の切換え状態を表示する表示部と、
    　を備えたことを特徴とするガス充填装置。     A gas supply path connected to the accumulator on which fuel gas is accumulating on the upstream side, and
    A filling nozzle connected to the downstream side of the gas supply path and connected to a tank to be filled mounted on the vehicle, and a filling nozzle.
    A supply control valve provided in the middle of the gas supply path and supplying fuel gas in the accumulator to the filling nozzle by opening the valve.
    A filling control means for controlling the supply of the fuel gas to the filled tank by controlling the opening and closing of the supply control valve.
    In a gas filling device configured to include
    A switching valve provided in the gas supply path to switch the open / closed state in the gas supply path,
    A display unit provided on the switching valve and displaying the switching state of the switching valve,
    A gas filling device characterized by being equipped with.
  2. 　前記切換弁は、手動で切換えられる手動切換弁であり、
    　前記表示部は、前記手動切換弁の動作に応じて表示を切換え可能であることを特徴とする請求項１に記載のガス充填装置。     The switching valve is a manual switching valve that can be switched manually.
    The gas filling device according to claim 1, wherein the display unit can switch the display according to the operation of the manual switching valve.
  3. 　前記表示部は、前記手動切換弁が閉のときに、閉の表示に対応する位置に移動可能なカバー部であることを特徴とする請求項２に記載のガス充填装置。 The gas filling device according to claim 2, wherein the display unit is a cover unit that can be moved to a position corresponding to a closed display when the manual switching valve is closed.
  4. 　前記カバー部は、前記手動切換弁が閉のときに、前記手動切換弁のハンドルの上側または下側に移動可能であることを特徴とする請求項３に記載のガス充填装置。 The gas filling device according to claim 3, wherein the cover portion can be moved to the upper side or the lower side of the handle of the manual switching valve when the manual switching valve is closed.
  5. 　前記カバー部の位置を検出する検出手段をさらに備え、
    　前記充填制御手段は、前記検出手段の検出に応じて前記供給制御弁を開閉制御することを特徴とする請求項３または４に記載のガス充填装置。     Further provided with a detection means for detecting the position of the cover portion,
    The gas filling device according to claim 3, wherein the filling control means controls opening and closing of the supply control valve in response to detection by the detection means.
  6. 　前記ガス供給経路は、複数の経路を備えており、
    　前記切換弁は、前記複数の経路のそれぞれに設けられていることを特徴とする請求項１ないし５のいずれかに記載のガス充填装置。     The gas supply path includes a plurality of paths.
    The gas filling device according to any one of claims 1 to 5, wherein the switching valve is provided in each of the plurality of paths.
PCT/JP2021/033562 2020-09-15 2021-09-13 Gas filling device WO2022059649A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53155132U (en) * 1977-05-13 1978-12-06
JP2004019853A (en) * 2002-06-19 2004-01-22 Tomoe Tech Res Co Opening indicating device for rotary valve
JP2010133497A (en) * 2008-12-04 2010-06-17 Tokiko Techno Kk Gas-filling device
JP2013024402A (en) * 2011-07-26 2013-02-04 Viscas Corp Valve opening/closing indicator device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006220275A (en) 2005-02-14 2006-08-24 Hitachi Ltd Filling device
JP6347908B2 (en) 2010-12-07 2018-06-27 日立オートモティブシステムズメジャメント株式会社 Gas supply device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53155132U (en) * 1977-05-13 1978-12-06
JP2004019853A (en) * 2002-06-19 2004-01-22 Tomoe Tech Res Co Opening indicating device for rotary valve
JP2010133497A (en) * 2008-12-04 2010-06-17 Tokiko Techno Kk Gas-filling device
JP2013024402A (en) * 2011-07-26 2013-02-04 Viscas Corp Valve opening/closing indicator device

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