WO2021215399A1 - 高圧水素容器 - Google Patents
高圧水素容器 Download PDFInfo
- Publication number
- WO2021215399A1 WO2021215399A1 PCT/JP2021/015876 JP2021015876W WO2021215399A1 WO 2021215399 A1 WO2021215399 A1 WO 2021215399A1 JP 2021015876 W JP2021015876 W JP 2021015876W WO 2021215399 A1 WO2021215399 A1 WO 2021215399A1
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- WO
- WIPO (PCT)
- Prior art keywords
- metal cylinder
- pressure hydrogen
- hydrogen container
- members
- container according
- Prior art date
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/005—Storage of gas or gaseous mixture at high pressure and at high density condition, e.g. in the single state phase
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K15/067—Mounting of tanks
- B60K15/07—Mounting of tanks of gas tanks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J12/00—Pressure vessels in general
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/02—Detachable closure members; Means for tightening closures
- F16J13/12—Detachable closure members; Means for tightening closures attached by wedging action by means of screw-thread, interrupted screw-thread, bayonet closure, or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J13/00—Covers or similar closure members for pressure vessels in general
- F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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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
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03309—Tanks specially adapted for particular fuels
- B60K2015/03315—Tanks specially adapted for particular fuels for hydrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K2015/0632—Arrangement of tanks the fuel tank is arranged below the front seat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/063—Arrangement of tanks
- B60K2015/0636—Arrangement of tanks the fuel tank being part of the chassis or frame
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/15—Fork lift trucks, Industrial trucks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/10—Energy storage devices
- B60Y2400/102—Energy storage devices for hydrogen fuel
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0104—Shape cylindrical
- F17C2201/0119—Shape cylindrical with flat end-piece
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/035—Orientation with substantially horizontal main axis
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/054—Size medium (>1 m3)
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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
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/05—Size
- F17C2201/056—Small (<1 m3)
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0617—Single wall with one layer
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0614—Single wall
- F17C2203/0619—Single wall with two layers
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0636—Metals
- F17C2203/0639—Steels
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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
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0634—Materials for walls or layers thereof
- F17C2203/0658—Synthetics
- F17C2203/0663—Synthetics in form of fibers or filaments
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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
- F17C2209/00—Vessel construction, in particular methods of manufacturing
- F17C2209/22—Assembling processes
- F17C2209/228—Assembling processes by screws, bolts or rivets
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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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0123—Single phase gaseous, e.g. CNG, GNC
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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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
- F17C2223/036—Very high pressure (>80 bar)
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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
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/0447—Composition; Humidity
- F17C2250/0452—Concentration of a product
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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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/01—Improving mechanical properties or manufacturing
- F17C2260/013—Reducing manufacturing time or effort
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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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/035—Dealing with losses of fluid
- F17C2260/038—Detecting leaked fluid
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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
- F17C2270/00—Applications
- F17C2270/01—Applications for fluid transport or storage
- F17C2270/0165—Applications for fluid transport or storage on the road
- F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
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- 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 invention relates to a high-pressure hydrogen container for storing high-pressure hydrogen.
- Patent Document 1 since there is a repeated pressure cycle of high-pressure hydrogen assumed during use of the high-pressure hydrogen container mounted on the transport vehicle, the body portion is thickened so as to reduce the stress level. A cylindrical portion is used, and a dome-shaped portion is formed at one end of the cylindrical portion. For this reason, there is a problem that it takes time and effort to manufacture a high-pressure hydrogen container that secures a pressure resistance, and the manufacturing cost increases.
- the present invention is for solving the above-mentioned problems, and an object of the present invention is to provide a high-pressure hydrogen container having a simple configuration, which does not require much labor in manufacturing and has a pressure resistance that can reduce manufacturing costs.
- the high-pressure hydrogen container of the present invention A metal cylinder for storing high-pressure hydrogen and A pair of lid members covering both ends of the metal cylinder, A plurality of fastening members fixed with the metal cylinder sandwiched between the pair of lid members, To be equipped.
- the plurality of fastening members fix one of the pair of lid members and the other lid member by sandwiching a metal cylinder between them. Therefore, the high-pressure hydrogen container can be manufactured by fixing a pair of lid members with a plurality of fastening members. Therefore, it is possible to provide a high-pressure hydrogen container having a simple structure, which does not require much labor in manufacturing and has a pressure resistance that can reduce the manufacturing cost.
- FIG. 1 is a schematic configuration diagram showing a forklift 100 according to an embodiment.
- the forklift 100 shown in FIG. 1 is a fuel cell type transportation vehicle.
- the forklift 100 includes a cargo handling device 102 at the front of the vehicle body 101.
- the forklift 100 includes a driver's seat 103 at the center of the vehicle body 101.
- the forklift 100 includes a fuel cell 104 below the driver's seat 103.
- the fuel cell 104 includes a power generation unit 105 and a high-pressure hydrogen container 1.
- the power generation unit 105 chemically reacts oxygen in the air with hydrogen supplied from the high-pressure hydrogen container 1 to generate electric power.
- the forklift 100 includes a pair of front wheels 106 that are driving wheels at the front of the vehicle body 101, and a pair of rear wheels 107 that are steering wheels at the rear of the vehicle body 101.
- the pair of front wheels 106 are driven by an electric motor (not shown). Electric power is supplied to the electric motor from the power generation unit 105.
- the pair of rear wheels 107 are steered by the driver in the driver's seat 103.
- the forklift 100 is provided with a counterweight 108 at the rear of the vehicle body 101.
- the counterweight 108 adjusts the weight of the vehicle and balances the weight of the vehicle body 101.
- the forklift 100 does not have a counterweight at the front of the vehicle body 101.
- the high-pressure hydrogen container 1 provided in the central portion of the vehicle body 101 of the forklift 100 has a weight that assists the counterweight 108. That is, the high-pressure hydrogen container 1 also serves as a part of the counterweight of the forklift 100. Therefore, the fuel cell 104 is housed in a case (not shown) that is lightweight and easy to process. The case doubles as part of the counterweight.
- the high pressure hydrogen container 1 is used for the forklift 100.
- the high-pressure hydrogen container 1 is not limited to being used for this purpose.
- the high-pressure hydrogen container 1 is also used for other transportation vehicles.
- the transportation vehicle in which the high-pressure hydrogen container 1 is used may be a towing car used in an airport or the like.
- FIG. 2 is an external perspective view showing the high-pressure hydrogen container 1 according to the embodiment.
- FIG. 3 is an exploded perspective view showing the high-pressure hydrogen container 1 according to the embodiment.
- FIG. 4 is a schematic configuration diagram showing the high-pressure hydrogen container 1 according to the embodiment.
- FIG. 5 is a side view showing the high-pressure hydrogen container 1 according to the embodiment from the direction of arrow A in FIG.
- the high-pressure hydrogen container 1 shown in FIGS. 2, 3, 4 and 5 stores high-pressure hydrogen.
- the high-pressure hydrogen container 1 includes a metal cylinder 2, a pair of lid members 3, and a plurality of fastening members 4.
- the metal cylinder 2 is for storing high-pressure hydrogen.
- the pair of lid members 3 mutually cover both ends of the metal cylinder 2.
- the plurality of fastening members 4 fix one lid member 3 and the other lid member 3 of the pair of lid members 3 with a metal cylinder 2 sandwiched between them.
- the metal cylinder 2 is a cylindrical member for storing high-pressure hydrogen with both ends open.
- the metal cylinder 2 is made of a seamless metal cylinder member in order to prevent leakage of high-pressure hydrogen stored inside.
- the metal cylinder 2 is made of, for example, low alloy steel. That is, the metal cylinder 2 is configured to have, for example, any one of chrome molybdenum steel, nickel chrome molybdenum steel, manganese chrome steel, manganese steel, and boron-added steel.
- the decarburized layer is removed from the inner peripheral surface of the metal cylinder 2. Further, after the decarburized layer is removed, the inner peripheral surface of the metal cylinder 2 is subjected to residual compressive stress by irradiation with a shot ball having a large mass.
- a carbon fiber reinforced resin portion may be wound around the outer circumference of the metal cylinder 2.
- the carbon fiber reinforced resin portion is provided in order to secure the mechanical strength which is the required pressure resistance of the metal cylinder 2.
- the carbon fiber reinforced resin portion is a composite material in which carbon fiber is used as a reinforcing material and impregnated with the resin to improve the strength.
- PAN-based carbon fiber or PITCH-based carbon fiber is used.
- the lid member 3 is attached to both ends of the metal cylinder 2 to cover the metal cylinder 2 and close the metal cylinder 2.
- Each of the pair of lid members 3 uses a plate-like body having a square front and back shape.
- the pair of lid members 3 are attached with their upper, lower, left, and right sides parallel to each other so that they can be easily installed or stacked.
- the shape of the lid member 3 is not limited to the above configuration, and the design can be changed as appropriate.
- At least one of the lid members 3 is provided with a valve (not shown) connected to a hydrogen through hole (not shown), which is used for filling or releasing high-pressure hydrogen.
- the pair of lid members 3 are made of metal similar to the metal cylinder 2.
- Each of the pair of lid members 3 is formed with a plurality of through holes 3a through which a plurality of fastening members 4 are inserted.
- the through hole 3a of the lid member 3 may be formed with a recess for accommodating the nut 5 of the fastening member 4.
- the nut 5 of the fastening member 4 projects to the outside of the lid member 3.
- Bolts are used for the fastening member 4.
- the bolts used for the fastening member 4 are long bolts that screw and fix the nuts 5 to both ends. Therefore, each of the plurality of fastening members 4 is inserted into the through hole 3a formed in one lid member 3 and the through hole 3a formed in the other lid member 3 to the outside of both lid members 3. It is protruding. Then, nuts 5 are screw-fixed to both ends of the fastening member 4 projecting to the outside of both lid members 3.
- the fastening member 4 may use a bolt having a head at one end and screwing only the other end with a nut 5.
- Each of the plurality of fastening members 4 inserted into the through hole 3a formed in one lid member 3 and the through hole 3a formed in the other lid member 3 has an extending direction, that is, a longitudinal direction of the metal cylinder 2. They are arranged parallel to the central axis O.
- the plurality of fastening members 4 are scattered around the outer circumference of the metal cylinder 2 and surround the outer circumference of the metal cylinder 2. Specifically, the plurality of fastening members 4 are fixed at a plurality of locations on the same circumference at regular intervals.
- the metal cylinder 2 and the plurality of fastening members 4 surrounding the outer circumference of the metal cylinder 2 form concentric circles centered on the central axis O of the metal cylinder 2.
- the plurality of fastening members 4 are arranged on a circle centered on the central axis O of the metal cylinder 2.
- a gap S is formed between the metal cylinder 2 and the plurality of fastening members 4 surrounding the outer periphery of the metal cylinder 2 so as to separate the metal cylinder 2 and the plurality of fastening members 4.
- the arrangement of the plurality of fastening members 4 is not limited to the above configuration, and can be appropriately changed according to the design.
- Both ends of each of the plurality of fastening members 4 are screw-fixed on the outside of both lid members 3.
- the fastening member 4 may be fixed with screws by inserting a tool such as a spanner between the recess of the lid member 3 and the nut 5. Further, the fastening member 4 may have an insertion hole in the head for inserting a tool such as a hexagon wrench and may be screw-fixed.
- FIG. 6 is an enlarged view showing a portion B of FIG. 4 in an enlarged manner.
- the high-pressure hydrogen container 1 has two fitting structures 6 for fitting each of the metal cylinder 2 and the pair of lid members 3.
- each of the two fitting structures 6 has a convex portion 6a and a groove portion 6b.
- the convex portion 6a has an outer circumference that is fitted to the inner circumference of the metal cylinder 2 on each metal cylinder 2 side of the pair of lid members 3.
- the groove portion 6b is recessed in the outer periphery of the convex portion 6a on the metal cylinder 2 side of each of the pair of lid members 3 in a direction opposite to the protruding direction of the convex portion 6a, and the end portion of the metal cylinder 2 is fitted.
- the fitting structure 6 may be fitted in any other shape.
- a first sealing portion 7 is provided to seal the side peripheral surface of the convex portion 6a and the inner peripheral surface of the metal cylinder 2.
- the first seal portion 7 includes a first seal groove 7a formed around the side peripheral surface of the convex portion 6a, a first O-ring 7b arranged in the first seal groove 7a, and a first seal groove. It has a backup ring 7c arranged on the lid member 3 side with respect to the first O-ring 7b in 7a.
- the first seal groove 7a is configured by screwing the retainer ring 7d to the protruding portion of the lid member 3 provided with the convex portion 6a with screws 7e.
- the outer diameter of the retainer ring 7d is formed to be larger than the diameter of the bottom surface of the first seal groove 7a.
- the first seal groove 7a is formed in an annular groove having a small outer peripheral dimension of the convex portion 6a between the protruding portion of the lid member 3 and the retainer ring 7d.
- the first O-ring 7b and the backup ring 7c are configured so as not to fall off from the first seal groove 7a formed in the annular groove by the retainer ring 7d.
- the first seal portion 7 does not have to have a backup ring 7c, and has a second backup ring arranged on the metal cylinder 2 side of the first O-ring 7b in the first seal groove 7a. You may.
- the side peripheral surface of the convex portion 6a and the inner peripheral surface of the metal cylinder 2 are parallel to each other along the central axis O of the metal cylinder 2.
- the retainer ring 7d may be made of a metal material different from that of the lid member 3.
- a second seal portion 8 is provided to seal the bottom portion of the groove portion 6b and the end surface that is fitted into the groove portion 6b of the metal cylinder 2 and abuts on the bottom portion of the groove portion 6b.
- the second seal portion 8 has a second seal groove 8a formed around the end surface of the metal cylinder 2 and a second O-ring 8b arranged in the second seal groove 8a.
- the end face of the metal cylinder 2 and the bottom surface of the groove 6b are planes orthogonal to the central axis O of the metal cylinder 2.
- the first seal portion 7 and the second seal portion 8 are not limited to the above configuration as long as they can exhibit the sealing function, and a well-known technique may be used.
- a leak port 9 penetrating from the inside to the outside is provided between the first seal portion 7 and the second seal portion 8 of the metal cylinder 2.
- a hydrogen sensor 10 is provided at the outlet of the leak port 9. The hydrogen sensor 10 monitors the leakage of leaked hydrogen before the first seal portion 7 is broken and the second seal portion 8 is broken. Further, hydrogen leakage may occur due to deterioration of the material constituting the seal even if the first seal portion 7 or the second seal portion 8 does not break.
- the leak port 9 is formed on at least one lid member 3. The leak port 9 is in contact with the position of the lid member 3 side of the first seal portion 7 of the metal cylinder 2, that is, the first seal portion 7 of the surface of the lid member 3 on the metal cylinder 2 side.
- the portion is formed so as to open on a surface located between the portion and the portion with which the second seal portion 8 abuts. Further, since the leak port 9 is located closer to the inner side where hydrogen is stored than the second seal portion 8, hydrogen does not reach the groove portion 6b where stress is easily concentrated and the portion where the fastening member 4 is fastened. Therefore, the stress concentration portion is not affected by the decrease in strength due to hydrogen, so that the reliability of the strength of the high-pressure hydrogen container 1 is improved.
- the leak port 9 communicates with the outside of the high-pressure hydrogen container 1.
- the gas that has passed through the leak port 9 is configured to be guided to a hydrogen sensor 10 installed outside the high-pressure hydrogen container 1.
- the hydrogen sensor 10 detects gaseous hydrogen guided through the leak port 9.
- the high-pressure hydrogen container 1 may be configured to notify a warning when the hydrogen sensor 10 detects that the content of hydrogen contained in the gas is equal to or higher than a specified value.
- the hydrogen sensor 10 may constantly monitor the gas guided through the leak port 9.
- a predetermined amount of hydrogen is constantly leaking from the leak port 9 because hydrogen permeates the material constituting the first O-ring 7b. Since the hydrogen sensor 10 can detect a change in the amount of hydrogen contained in the gas by constantly monitoring the gas guided through the leak port 9, the change causes deterioration or breakage of the first seal portion 7. Hydrogen leakage due to abnormality can be detected.
- the hydrogen sensor 10 by constantly monitoring the hydrogen sensor 10, it is possible to determine whether or not the operation of the hydrogen sensor 10 itself is normal. That is, if the hydrogen sensor 10 is normal, hydrogen that permeates the first seal portion 7 is constantly detected. Therefore, if the hydrogen sensor 10 does not detect hydrogen, the hydrogen sensor 10 itself is operating normally. It can be judged that there is no such thing. Therefore, even when the hydrogen sensor 10 does not detect hydrogen, by notifying a warning, an abnormality of the hydrogen sensor 10 itself can be detected, so that the reliability of the high-pressure hydrogen container 1 is improved.
- the hydrogen sensor 10 may include a notification device 50 that notifies a change in the amount of hydrogen in the gas guided through the leak port 9. Further, the notification device 50 may notify that the hydrogen sensor 10 has not detected hydrogen, that is, that the amount of hydrogen contained in the gas has become substantially zero.
- the notification device 50 may be realized by means such as an external display or a warning light.
- FIG. 7 is an enlarged view of a part of a modified example of the high-pressure hydrogen container 1 according to the embodiment.
- the shape of the lid member 3 is changed, and the end portion of the metal cylinder 2 is not fitted in the groove portion 6b but is abutted against the flange portion 6c. ing. If the strength of the flange portion 6c can be secured for the lid member 13 according to the modified example, the same strength as that of the lid member 3 can be secured, and hydrogen leakage from the inside can be suppressed.
- FIG. 8 is an enlarged view showing the portion C of FIG. 4 in an enlarged manner.
- the high-pressure hydrogen container 1 covers one of the pair of lid members 3 when going from the inside to the outside of the metal cylinder 2 in the metal cylinder 2 and the pair of lid members 3.
- the common route of the shortest distance common between the path to the outside and the path to the position where the fastening member 4 closest to the metal cylinder 2 among the plurality of fastening members 4 is inserted into the lid member 3 Has position P.
- the minimum thickness of the lid member 3 from the common passage position P to the outside is t [mm].
- the distance between the common transit position P and the position where the fastening member 4 closest to the metal cylinder 2 among the plurality of fastening members 4 is inserted into the lid member 3 is set to L0 [mm]. At this time, L0> t is satisfied.
- the reason why the fastening member 4 closest to the metal cylinder 2 is inserted into one of the two lid members 3 is that the plurality of fastening members 4 are on the same circle. This is because the case where it does not exist is also taken into consideration.
- the high pressure hydrogen container 1 includes a metal cylinder 2 for storing high pressure hydrogen.
- the high-pressure hydrogen container 1 includes a pair of lid members 3 that cover both ends of the metal cylinder 2.
- the high-pressure hydrogen container 1 includes a plurality of fastening members 4 in which one lid member 3 and the other lid member 3 of the pair of lid members 3 are fixed by sandwiching a metal cylinder 2 between them.
- the plurality of fastening members 4 fix one lid member 3 and the other lid member 3 of the pair of lid members 3 with a metal cylinder 2 sandwiched between them. Therefore, the high-pressure hydrogen container 1 can be manufactured by fixing a pair of lid members 3 with a plurality of fastening members 4. Therefore, it is possible to provide the high-pressure hydrogen container 1 having a simple structure, which does not require much labor in manufacturing and secures a pressure resistance that can reduce the manufacturing cost.
- bolts are used for the fastening member 4.
- the high-pressure hydrogen container 1 can be manufactured by fixing a pair of lid members 3 with a plurality of fastening members 4 using bolts.
- each of the pair of lid members 3 is formed with a plurality of through holes 3a through which a plurality of fastening members 4 are inserted.
- Each of the plurality of fastening members 4 is inserted into a through hole 3a formed in one lid member 3 and a through hole 3a formed in the other lid member 3.
- each of the plurality of fastening members 4 is inserted into a through hole 3a formed in one lid member 3 and a through hole 3a formed in the other lid member 3, and a pair of high-pressure hydrogen containers 1 are provided.
- each of the plurality of fastening members 4 inserted into the through hole 3a formed in one lid member 3 and the through hole 3a formed in the other lid member 3 extends in the extending direction, that is, The longitudinal direction is arranged parallel to the central axis O of the metal cylinder 2.
- the holding force for sandwiching and fixing the metal cylinder 2 in each of the plurality of fastening members 4 is in the direction parallel to the central axis O of the metal cylinder 2, and the holding force does not twist and is high pressure.
- the durability of the hydrogen container 1 can be improved.
- the plurality of fastening members 4 are scattered around the outer circumference of the metal cylinder 2 and surround the outer circumference of the metal cylinder 2.
- each of the plurality of fastening members 4 scattered around the outer circumference of the metal cylinder 2 and surrounding the outer circumference of the metal cylinder 2 are dispersed on the outer circumference of the metal cylinder 2 to sandwich and fix the metal cylinder 2.
- the holding force is exhibited in a well-balanced manner on the outer periphery of the metal cylinder 2, and the durability of the high-pressure hydrogen container 1 can be improved.
- the plurality of fastening members 4 are scattered on the same circumference at the same intervals.
- the metal cylinder 2 and the plurality of fastening members 4 surrounding the outer circumference of the metal cylinder 2 form concentric circles centered on the central axis O of the metal cylinder 2.
- each of the plurality of fastening members 4 forming concentric circles centered on the central axis O of the metal cylinder 2 equally distributes the distance to the metal cylinder 2 on the outer periphery of the metal cylinder 2 to form the metal cylinder 2. It can exert a holding force to pinch and fix. As a result, the holding force exerts the same and well-balanced influence on the metal cylinder 2 on the outer circumference of the metal cylinder 2, and the durability of the high-pressure hydrogen container 1 can be improved.
- a gap S is formed between the metal cylinder 2 and the plurality of fastening members 4 surrounding the outer periphery of the metal cylinder 2 so as to separate the metal cylinder 2 and the plurality of fastening members 4.
- the fastening member 4 is arranged with a gap S, the portion of the lid member 3 that receives the load from the fastening member 4 is also separated from the portion where the metal cylinder 2 and the lid member 3 are fitted. , The stress generating part is not easily affected by hydrogen embrittlement, and the reliability of strength is improved.
- the high-pressure hydrogen container 1 has two fitting structures 6 for fitting each of the metal cylinder 2 and the pair of lid members 3.
- each of the metal cylinder 2 and the pair of lid members 3 is fitted by each of the two fitting structures 6, and the metal cylinder 2 and each of the pair of lid members 3 are sealed. Can be secured.
- the high-pressure hydrogen container 1 can form a container in which the high-pressure hydrogen to be stored does not easily leak.
- each of the two fitting structures 6 has a convex portion 6a having an outer circumference that is fitted to the inner circumference of the metal cylinder 2 on each metal cylinder 2 side of the pair of lid members 3. Further, each of the pair of lid members 3 is recessed at the outer periphery of the convex portion 6a on the metal cylinder 2 side in a direction opposite to the protruding direction of the convex portion 6a, and a groove portion 6b into which the end portion of the metal cylinder 2 is fitted.
- each of the metal cylinder 2 and the pair of lid members 3 is fitted by each of the two fitting structures 6 having the convex portion 6a and the groove portion 6b, and the metal cylinder 2 and the pair of lid members 3 are fitted together. Sealability can be ensured between each.
- the first sealing portion 7 for sealing the side peripheral surface of the convex portion 6a and the inner peripheral surface of the metal cylinder 2 is provided.
- the first sealing portion 7 seals the side peripheral surface of the convex portion 6a and the inner peripheral surface of the metal cylinder 2, and sealability is provided between the metal cylinder 2 and each of the pair of lid members 3. Can be secured.
- the first seal portion 7 has a first seal groove 7a formed around the side peripheral surface of the convex portion 6a and a first O-ring arranged in the first seal groove 7a. It has a 7b and a backup ring 7c arranged on the lid member 3 side of the first O-ring 7b in the first seal groove 7a.
- the first seal portion 7 using the first O-ring 7b and the backup ring 7c arranged in the first seal groove 7a is formed on the side peripheral surface of the convex portion 6a and the inner peripheral surface of the metal cylinder 2. Is sealed, and a sealing property can be ensured between the metal cylinder 2 and each of the pair of lid members 3.
- a second seal portion 8 is provided which seals the bottom portion of the groove portion 6b and the end surface which is fitted into the groove portion 6b of the metal cylinder 2 and abuts on the bottom portion of the groove portion 6b.
- the second seal portion 8 seals the bottom portion of the groove portion 6b and the end face of the metal cylinder 2, and a sealability can be ensured between the metal cylinder 2 and each of the pair of lid members 3.
- the second seal portion 8 functions as a top seal having a different sealing surface from the first seal portion 7 that functions as a bore seal.
- the second seal portion 8 is not affected by the airtightness of the first seal portion 7 by making the sealing surface different from that of the first seal portion 7, so that the second seal portion 8 is added to the first seal portion 7.
- the sealing property of the high-pressure hydrogen container 1 can be ensured, and the hydrogen leakage prevention performance of the high-pressure hydrogen container 1 can be further improved.
- the first seal portion 7 and the second seal portion 8 are collectively provided in the same fitting structure 6 having different surfaces provided on both sides, and can be efficiently arranged.
- the second seal portion 8 includes a second seal groove 8a formed around the end face of the metal cylinder 2 and a second O-ring 8b arranged in the second seal groove 8a. , Have.
- the second seal portion 8 using the second O-ring 8b arranged in the second seal groove 8a seals the bottom portion of the groove portion 6b and the end face of the metal cylinder 2, and is paired with the metal cylinder 2. Sealability can be ensured between each of the lid members 3 of the above. Further, since the second O-ring 8b is arranged in the second seal groove 8a formed on the end surface of the metal cylinder 2 instead of the bottom of the groove portion 6b of the lid member 3, the second seal groove 8a can be easily formed. , The second O-ring 8b is easy to arrange, and the second seal portion 8 is easy to manufacture.
- a leak port 9 penetrating from the inside to the outside is provided between the first seal portion 7 and the second seal portion 8 in the metal cylinder 2.
- the stored hydrogen flows out from the leak port 9, so that the breakage or deterioration of the first seal portion 7 can be detected before the breakage or deterioration of the second seal portion 8.
- the breakage or deterioration of the first seal portion 7 can be detected before the hydrogen leaks from the high-pressure hydrogen container 1 due to the breakage or deterioration of the second seal portion 8, and the hydrogen leakage of the high-pressure hydrogen container 1 can be prevented.
- a hydrogen sensor 10 for detecting hydrogen contained in the gas passing through the leak port 9 is further provided. Further, the hydrogen sensor 10 constantly monitors the amount of hydrogen contained in the gas passing through the leak port 9, and notifies when the amount of hydrogen contained in the gas is equal to or more than a specified value. Further, the hydrogen sensor 10 notifies when the amount of hydrogen contained in the gas becomes zero.
- the high-pressure hydrogen container 1 can reliably detect hydrogen leakage due to breakage or deterioration of the first seal portion 7, and determines whether or not the hydrogen sensor 10 is operating normally. You can also. As a result, the certainty of hydrogen leakage detection is improved, and the reliability of the high-pressure hydrogen container 1 is improved.
- the high-pressure hydrogen container 1 is a lid member of either one of the pair of lid members 3 when reaching from the inside to the outside of the metal cylinder 2 in the metal cylinder 2 and the pair of lid members 3.
- a common transit position having the shortest common distance between the path to the outside and the path to the position where the fastening member 4 closest to the metal cylinder 2 among the plurality of fastening members 4 is inserted into the lid member 3.
- the minimum thickness of the lid member 3 from the common passage position P to the outside is t [mm].
- the distance between the common transit position P and the position where the fastening member 4 closest to the metal cylinder 2 among the plurality of fastening members 4 is inserted into the lid member 3 is set to L0 [mm]. At this time, L0> t is satisfied.
- the high-pressure hydrogen container 1 does not cause hydrogen deterioration of the plurality of fastening members 4 before the lid member 3, and is not easily damaged.
- each of the pair of lid members 3 uses a plate-like body having a square front and back shape.
- the manufacturer can perform processing on each of the pair of lid members 3 by lathe processing instead of milling processing. As a result, the processing cost can be reduced, and the high-pressure hydrogen container 1 can be easily manufactured.
- the high-pressure hydrogen container 1 also serves as a part of the counterweight of the transportation vehicle.
- the weight of the high-pressure hydrogen container 1 becomes heavy due to the metal cylinder 2, the pair of lid members 3, and the plurality of fastening members 4. Therefore, the total amount of counterweights mounted on the transportation vehicle can be reduced, and the number of parts of the transportation vehicle can be reduced. As a result, the manufacturing cost of the transportation vehicle can be reduced.
- 1 high-pressure hydrogen container 2 metal cylinder, 3 lid member, 3a through hole, 4 fastening member, 5 nut, 6 fitting structure, 6a convex part, 6b groove part, 6c flange part, 7 1st seal part, 7a 1st seal Groove, 7b 1st O-ring, 7c backup ring, 7d retainer ring, 7e screw, 8 2nd seal, 8a 2nd seal groove, 8b 2nd O-ring, 9 leak port, 10 hydrogen sensor, 13 lid member, 50 Notification device, 100 fork lift, 101 car body, 102 cargo handling device, 103 driver's seat, 104 fuel cell, 105 power generation unit, 106 front wheel, 107 rear wheel, 108 counter weight.
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Abstract
Description
高圧水素の貯蔵用の金属円筒と、
前記金属円筒の両端部を覆った一対の蓋部材と、
前記一対の蓋部材の間に前記金属円筒を挟み込んだ状態で固定した複数の締結部材と、
を備える。
図1は、実施の形態に係るフォークリフト100を示す概略構成図である。図1に示されるフォークリフト100は、燃料電池式の輸送用車両である。フォークリフト100は、車体101の前部に荷役装置102を備える。フォークリフト100は、車体101の中央部に運転席103を備える。
上述のようにフォークリフト100に高圧水素容器1が用いられる。しかし、高圧水素容器1は、これに用いられることに限られない。その他の輸送用車両にも高圧水素容器1が用いられる。たとえば、高圧水素容器1が用いられる輸送用車両は、空港などで使用されるトーイングカーなどでも良い。
図2は、実施の形態に係る高圧水素容器1を示す外観斜視図である。図3は、実施の形態に係る高圧水素容器1を示す分解斜視図である。図4は、実施の形態に係る高圧水素容器1を示す概略構成図である。図5は、実施の形態に係る高圧水素容器1を図4の矢印Aの方向から示す側面図である。
金属円筒2は、両端部が開放された高圧水素の貯蔵用の円筒部材である。金属円筒2は、内部に貯蔵する高圧水素の漏れを防ぐため、継目無しの金属製円筒部材で構成されている。
蓋部材3は、金属円筒2の両端部にそれぞれ取り付けられて覆い、金属円筒2を閉塞する。一対の蓋部材3のぞれぞれは、表裏形状が正方形である板状体を用いている。一対の蓋部材3は、容易に設置又は積み上げできるように、双方の上下左右の各辺を平行に取り付けられている。なお、蓋部材3の形状は、上記構成に限られず、適宜設計変更可能である。少なくとも一方の蓋部材3には、図示しない水素通し孔に繋がった図示しないバルブが設けられ、高圧水素の封入又は放出に利用される。一対の蓋部材3は、金属円筒2と同様な金属製である。
締結部材4には、ボルトが用いられている。締結部材4に用いられたボルトは、両端部にそれぞれナット5をネジ固定するロングボルトである。このため、複数の締結部材4のそれぞれは、一方の蓋部材3に形成された貫通孔3aと他方の蓋部材3に形成された貫通孔3aとに差し込まれて双方の蓋部材3の外側に突出している。そして、双方の蓋部材3の外側に突出した締結部材4の両端部にそれぞれナット5がネジ固定されている。なお、締結部材4は、一方の端部に頭部を有するとともに他方の端部のみをナット5によってネジ固定されるボルトを用いても良い。
図6は、図4のB部を拡大して示す拡大図である。図4及び図6に示されるように、高圧水素容器1は、金属円筒2と一対の蓋部材3のそれぞれとを嵌め合う2つの嵌め合い構造6を有する。
図8は、図4のC部を拡大して示す拡大図である。図8に示されるように、高圧水素容器1は、金属円筒2及び一対の蓋部材3の中における金属円筒2の内部から外部に至る際に、一対の蓋部材3のうちどちらか一方の蓋部材3において、外部に至る経路と、複数の締結部材4のうち金属円筒2に最も近い締結部材4が蓋部材3に挿通された位置に至る経路と、のうち共通する最短の距離の共通経由位置Pを有する。蓋部材3における共通経由位置Pから外部への最低厚みがt[mm]とされる。共通経由位置Pと複数の締結部材4のうち金属円筒2に最も近い締結部材4が蓋部材3に挿通された位置との間がL0[mm]とされる。このとき、L0>tが満たされている。ここで、L0を金属円筒2に最も近い締結部材4が一対の蓋部材3のうちどちらか一方の蓋部材3に挿通された位置とした理由は、複数の締結部材4が同一円上に点在しない場合も考慮しているためである。
実施の形態によれば、高圧水素容器1は、高圧水素の貯蔵用の金属円筒2を備える。高圧水素容器1は、金属円筒2の両端部をそれぞれ覆う一対の蓋部材3を備える。高圧水素容器1は、一対の蓋部材3のうち一方の蓋部材3と他方の蓋部材3とを双方の間に金属円筒2を挟み込んで固定した複数の締結部材4を備える。
Claims (21)
- 高圧水素の貯蔵用の金属円筒と、
前記金属円筒の両端部を覆った一対の蓋部材と、
前記一対の蓋部材の間に前記金属円筒を挟み込んだ状態で固定した複数の締結部材と、
を備える高圧水素容器。 - 前記複数の締結部材には、ボルトが用いられている請求項1に記載の高圧水素容器。
- 前記一対の蓋部材のそれぞれには、前記複数の締結部材を挿通する複数の貫通孔が形成され、
前記複数の締結部材のそれぞれは、前記一対の蓋部材のそれぞれに形成された前記複数の貫通孔に差し込まれている請求項2に記載の高圧水素容器。 - 前記複数の締結部材のそれぞれは、長手方向を前記金属円筒の中心軸に平行に配列されている請求項3に記載の高圧水素容器。
- 前記複数の締結部材は、前記金属円筒の外周に点在して前記金属円筒の外周を囲んでいる請求項1~請求項4のいずれか1項に記載の高圧水素容器。
- 前記複数の締結部材は、
同一円周上に同じ間隔で点在し、
前記金属円筒と前記金属円筒の外周を囲んだ前記複数の締結部材とは、
前記金属円筒の中心軸を中心とした同心円を構成している請求項5に記載の高圧水素容器。 - 前記金属円筒と前記金属円筒の外周を囲んだ前記複数の締結部材との間には、前記金属円筒と前記複数の締結部材とを離間させた隙間が形成されている請求項5又は請求項6に記載の高圧水素容器。
- 前記金属円筒と前記一対の蓋部材のそれぞれとを嵌め合う2つの嵌め合い構造を有する請求項1~請求項7のいずれか1項に記載の高圧水素容器。
- 前記一対の蓋部材のそれぞれは、
前記金属円筒側にて前記金属円筒の内周に嵌め合わせる外周を有する凸部を有する請求項8に記載の高圧水素容器。 - 前記凸部の側周面と前記金属円筒の内周面とを密封する第1シール部が設けられている請求項9に記載の高圧水素容器。
- 前記第1シール部は、
前記凸部の側周面を一回りして形成された第1シール溝と、
前記第1シール溝内に配置された第1オーリングと、
前記第1シール溝内の前記第1オーリングよりも前記蓋部材側に配置されたバックアップリングと、を有する請求項10に記載の高圧水素容器。 - 前記一対の蓋部材と前記金属円筒の前記一対の蓋部材のそれぞれに当接する端面とを密封する第2シール部が設けられている請求項10又は請求項11に記載の高圧水素容器。
- 前記第2シール部は、
前記金属円筒の前記端面を一回りして形成された第2シール溝と、
前記第2シール溝内に配置された第2オーリングと、を有する請求項12に記載の高圧水素容器。 - 前記金属円筒における前記第1シール部と前記第2シール部との間には、内部から外部に貫通したリークポートが設けられている請求項12又は請求項13に記載の高圧水素容器。
- 前記リークポートを通る気体に含まれる水素を検知する水素センサを更に備える請求項14に記載の高圧水素容器。
- 前記水素センサは、
前記リークポートを通る気体に含まれる水素の量を常時監視し、前記リークポートを通る気体に含まれる水素の量が規定値以上の場合に報知する請求項15に記載の高圧水素容器。 - 前記水素センサは、
前記リークポートを通る気体に含まれる水素の量が0になった場合に報知する請求項15又は請求項16に記載の高圧水素容器。 - 前記一対の蓋部材のそれぞれは、
前記凸部の外周側に位置する溝部を更に備え、
前記溝部は、前記凸部の突出方向とは反対方向に凹んで前記金属円筒が嵌め込まれる請求項9~請求項17のいずれか1項に記載の高圧水素容器。 - 前記金属円筒及び前記一対の蓋部材の中における前記金属円筒の内部から外部に至る際に、前記一対の蓋部材のうちどちらか一方の前記蓋部材において、外部に至る経路と、前記複数の締結部材のうち前記金属円筒に最も近い締結部材が当該蓋部材に挿通された位置に至る経路と、のうち共通する最短の距離の共通経由位置を有し、
当該蓋部材における前記共通経由位置から外部への最低厚みがt[mm]とされ、
前記共通経由位置と前記複数の締結部材のうち前記金属円筒に最も近い締結部材が当該蓋部材に挿通された位置との間がL0[mm]とされると、
L0>tが満たされている請求項1~請求項18のいずれか1項に記載の高圧水素容器。 - 前記一対の蓋部材のぞれぞれは、表裏形状が正方形である板状体を用いている請求項1~請求項19のいずれか1項に記載の高圧水素容器。
- 当該高圧水素容器は、輸送用車両のカウンターウェイトの一部を兼ねる請求項1~請求項20のいずれか1項に記載の高圧水素容器。
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AU2021259986A AU2021259986A1 (en) | 2020-04-20 | 2021-04-19 | High-pressure hydrogen vessel |
CN202180029311.9A CN115461569A (zh) | 2020-04-20 | 2021-04-19 | 高压氢容器 |
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