Classifications

• • 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
  • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
  • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
• • 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
  • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
  • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
• • 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
  • F17C13/04—Arrangement or mounting of valves
• • 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
  • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M8/00—Fuel cells; Manufacture thereof
  • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
  • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
  • H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M8/00—Fuel cells; Manufacture thereof
  • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
  • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
  • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
• • 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
  • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
  • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0323—Valves
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0323—Valves
  • F17C2205/0326—Valves electrically actuated
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0323—Valves
  • F17C2205/0329—Valves manually actuated
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0323—Valves
  • F17C2205/0332—Safety valves or pressure relief valves
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0323—Valves
  • F17C2205/0335—Check-valves or non-return valves
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0338—Pressure regulators
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0341—Filters
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
  • F17C2205/0382—Constructional details of valves, regulators
  • F17C2205/0385—Constructional details of valves, regulators in blocks or units
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0388—Arrangement of valves, regulators, filters
  • F17C2205/0391—Arrangement of valves, regulators, filters inside the pressure vessel
• • 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
  • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
  • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
  • F17C2205/0388—Arrangement of valves, regulators, filters
  • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
• • 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
• • 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
  • F17C2221/03—Mixtures
  • F17C2221/032—Hydrocarbons
  • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
• • 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
• • 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)
• • 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
  • F17C2250/03—Control means
• • 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
  • F17C2250/03—Control means
  • F17C2250/034—Control means using wireless transmissions
• • 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
  • F17C2250/06—Controlling or regulating of parameters as output values
  • F17C2250/0605—Parameters
  • F17C2250/0626—Pressure
• • 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
  • F17C2250/06—Controlling or regulating of parameters as output values
  • F17C2250/0605—Parameters
  • F17C2250/0631—Temperature
• • 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
  • F17C2250/06—Controlling or regulating of parameters as output values
  • F17C2250/0605—Parameters
  • F17C2250/0678—Position or presence
• • 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
  • F17C2250/06—Controlling or regulating of parameters as output values
  • F17C2250/0605—Parameters
  • F17C2250/0684—Acceleration
• • 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
  • F17C2260/036—Avoiding leaks
• • 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
  • F17C2260/04—Reducing risks and environmental impact
  • F17C2260/042—Reducing risk of explosion
• • 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
  • F17C2270/0178—Cars
• • 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
  • F17C2270/0184—Fuel cells
• • 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
  • F17C2270/07—Applications for household use
  • F17C2270/0754—Fire extinguishers
• • 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
• • 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
  • Y02E60/50—Fuel cells
• • 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
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

Definitions

• the present invention relates to a valve device, an in-tank valve and a gas pressure storage system with a generic valve device and / or a generic in-tank valve, which can preferably be used in fuel supply systems which, for example, fuel cell systems or applications of fuel cells with fuel, in particular with hydrogen, take care of.
• the present invention also relates to a method for detecting a leak, in particular in a gas pressure storage system, and to a valve arrangement.
• the fuel cell can be supplied directly with hydrogen, alternatively there is also the possibility of supplying the fuel cell with hydrogen indirectly via a reformer.
• a reformer extracts hydrogen from stored natural gas, which is a hydrogen-rich compound, and feeds it to the fuel cell, which generates heat and electricity through an electrochemical reaction.
• DE 10 2018 116 090 A1 describes a high-pressure container unit 10 with a box-like housing 22, a plurality of cylindrical containers 18 which are lined up inside the housing 22, each container having an opening 30B at an end portion on one side of the container 18 in FIG in the axial direction includes a coupling member 20 that connects the openings 30B to couple the plurality of containers 18 with each other and that includes a flow passage that communicates the interiors of the plurality of containers 18 with each other.
• the high pressure container unit 10 described has a discharge line 32 which leads from the coupling element 20 through a through hole 46A formed in the housing 22 to the exterior of the housing 22, a valve 34 being connected to the discharge line 32, which opens and closes the flow passage can.
• Such high-pressure container units offer the advantage that, due to their compactness, in particular the low overall height, they can be arranged simply on the underside of the vehicle of a floor panel 16 (see FIG. 1), which forms the floor of the driver's cab. Accordingly, it is possible to build electric vehicles that are supplied with energy (current) from a battery or alternatively from a fuel cell system with energy (current) on the same vehicle concept.
• the battery in a battery-powered electric vehicle, the battery can be installed in the area under the vehicle cabin in which the high-pressure container unit 10 is housed in a hydrogen-powered electric vehicle. Due to the advantages mentioned above and the constant further development of fuel cell systems, these have also found their way into other areas or are about to do so.
• DE 102007 001 912 A1 describes a fuel supply system for a fuel cell system for use in an aircraft.
• the fuel supply system 110 described has a fuel tank 112, a supply line 114 which connects the fuel tank 112 with an inlet 116 of a fuel cell 118, a tank isolation valve 128 arranged in the supply line 114, a discharge line 146 which connects an outlet 120 of the fuel cell 118 with an unprinted one Area of the aircraft and / or the outside atmosphere connects, and a sensor 144 for detecting an electrical voltage in the fuel cell 118.
• Such fuel supply systems or fuel supply systems can be used in aircraft to generate the electrical energy required on board an aircraft.
• a fuel cell system could also be used for the emergency power supply of the aircraft and replace the Ram Air Turbine (RAT) previously used as an emergency power unit.
• RAT Ram Air Turbine
• fuel supply systems can also be used to supply aircraft drones, such as
• Transport drones or personal drones are used to supply the electric drives of the rotors.
• the heavy batteries that currently limit the range and flight time as well as the transportable charge of such drones can be dispensed with.
• the fuel supply systems must meet high safety standards and high availability requirements, in particular in the area of passenger transport such as airplanes, drones or automobiles.
• the intactness of the gas pressure accumulator must always be ensured and the uncontrolled escape of fuel or fuel gas prevented.
• the invention is fundamentally based on the object of providing a valve device, an in-tank valve and a gas pressure storage system which are able to meet the high safety standards and high availability requirements described above, while at the same time simplifying the respective components, in particular a fuel supply system equipped with it, is achieved and thus the manufacturing costs and the maintenance costs (maintenance effort) can be reduced. Furthermore, the invention is based in particular on the object of providing a valve device, an in-tank valve and a gas pressure storage system with the aid of which it is possible in a simple and reliable manner to detect a leak or a gas leak in a system (the connected or included components). Accordingly, it is also the object of the present invention to provide a method for detecting a possible leak.
• the present invention provides a valve arrangement with the aid of which a safety valve can be provided in a compact design, in which the safety valve or main valve after a single actuation, in particular manual actuation, remains in an open position, even if an actuation pulse is interrupted or there is a leak.
• valve device according to claim 1, an in-tank valve according to claim 2, a gas pressure accumulator according to claim 25, a gas pressure accumulator system according to claim 27 and a fuel supply system according to claim 29. Furthermore, the objects are achieved by a method for detecting a possible leakage according to claim 30 and a valve arrangement according to claim 34 solved.
• one of the basic ideas of the present invention is to provide at least one temperature detection unit, at least one pressure detection unit and a safety valve integrated in a line piece, the safety valve between an open position in which gas can flow through the line piece and a closed position in which no Gas can flow through the line piece can be adjusted, and the temperature detection unit and the pressure detection unit are arranged so that they can detect a temperature and a pressure of the gas flowing through the line piece in a state in which the gas is pressurized at the closed safety valve pending, in other words in a state in which the safety valve is closed, and the valve device is also set up, based on the detected Temperature and pressure values to carry out a leak test of the line section.
• a valve device in particular a gas handling device, which can preferably be used for a fuel supply system or a fire extinguishing system
• the fuel supply system preferably being set up to supply a fuel cell system with fuel, in particular hydrogen, at least one temperature detection unit, at least one pressure detection unit, and a safety valve integrated in a line piece, the safety valve being adjusted between an open position in which gas can flow through the line piece and a closed position in which no gas can flow through the line piece , wherein the temperature detection unit and the pressure detection unit are arranged so that they can detect a temperature and a pressure of the gas flowing through the pipe part in a state in which the gas is on the closed fuse safety valve is applied or pending under pressure.
• the temperature detection unit and the pressure detection unit are arranged or placed in such a way that they can detect the temperature and pressure of the gas in the flow direction, in particular the outflow direction of the gas from a gas pressure accumulator or a gas pressure accumulator system, upstream of the safety valve, i.e. upstream.
• valve assembly of the present invention can also be used for high pressure applications such as diving ventilators, aerospace applications, drones, general power supplies, and the like. Furthermore, the valve device is set up to carry out a leak test of the line section, in particular of a gas pressure storage system connected to the line section, based on the detected temperature and pressure values, in particular when the safety valve is closed.
• valve device can open or close a main supply line of a fire extinguishing system that uses nitrogen (N 2) as an extinguishing agent.
• Such a valve device in particular a gas handling device, can be used in a fuel supply system of a vehicle, in particular an electric vehicle, in order to supply a fuel cell system, which serves as a power generator for the electric motor of the vehicle, with fuel, in particular with hydrogen.
• vehicle or “means of transport” or other similar terms as used below encompasses motor vehicles in general, such as passenger automobiles including sports utility vehicles (SUV), buses, trucks, various commercial vehicles, water vehicles including various boats and ships , Aircraft, and the like, hybrid vehicles, electric vehicles, plug-in hybrid electric vehicles, hydrogen vehicles and other alternative vehicles (e.g. fuels obtained from resources other than petroleum).
• a hybrid vehicle is a vehicle with two or more energy sources, for example gasoline-powered and electrically powered vehicles at the same time.
• the term “fuel” is to be understood as a medium or fluid which serves as an energy store on the one hand it is a fuel whose chemical energy is converted into mechanical energy by combustion in internal combustion engines, such as internal combustion engines or gas turbines, on the other hand it can be, for example, hydrogen, which continuously carries out a chemical reaction in a fuel cell (galvanic cell) and thereby generates electrical energy or converts chemical energy into electrical energy.
• a fuel cell galvanic cell
• the fuel can be gaseous or liquid.
• pressure accumulators have also been developed in which hydrogen is stored in both forms, i.e. gaseous and liquefied, the so-called transcritical storage.
• valve device is designed in the form of an in-tank valve for attachment to a gas pressure accumulator, in particular a hydrogen tank, which is preferably set up to supply a fuel cell system with fuel, in particular hydrogen.
• the in-tank valve can have all of the features described in relation to the valve device and differs from this only in that it can be mounted directly on a gas pressure accumulator.
• the components provided in the valve device such as the protective valve
• the valve device can be brought as close as possible to the gas pressure accumulator, in particular its outlet opening.
• the protective valve can allow further fuel to escape be avoided.
• An in-tank valve has the further advantage that in the event of an accident, in which, for example, the downstream piping of the fuel supply system is damaged, in particular separated or torn off from the gas pressure accumulator, at least the components provided in the in-tank valve are still present on the gas pressure accumulator, which can ensure that at least the desired emergency functions of the valve device can be maintained.
• valve device in particular the in-tank valve, has a connection piece which is designed to be screwable into a gas pressure accumulator, in particular a connection piece / outlet opening of the gas pressure accumulator.
• valve device can be attached to standardized gas pressure accumulators in a simple and safer manner and can be quickly detached from the gas pressure accumulator for maintenance work or testing work.
• the line piece is provided in such a way that it protrudes into the gas pressure accumulator when attached to the gas pressure accumulator and has an open end on the side facing the gas pressure accumulator.
• a sensor tube is provided which runs at least in sections separately from the line piece and is designed such that it protrudes into the gas pressure accumulator and preferably the Temperature detection unit and / or the pressure detection unit is / are provided.
• the temperature detection unit or the pressure detection unit on the one hand be designed as a thermocouple or a strain gauge (DMS), on the other hand they can be designed as a complete sensor, in particular as an intelligent sensor (in English "smart sensor"), which, for example, already processed sensor signals That is to say, an intelligent sensor can output control and / or regulation signals directly without a controller, in other words, carry out a decentralized control and / or regulation.
• a thermocouple or a strain gauge DMS
• an intelligent sensor in English "smart sensor”
• an intelligent sensor can output control and / or regulation signals directly without a controller, in other words, carry out a decentralized control and / or regulation.
• an excess flow valve in particular in the outflow direction of the gas or fuel from the gas pressure accumulator in the direction of the consumer, in particular in the direction of the fuel cell, an excess flow valve (im English "excessive flow valve") and / or throttle valve is provided.
• valve-controlled valve is to be understood as meaning that the valve is actuated by an external pulse or an external force
• actuating or controlling the valve pneumatically, hydraulically or by an optical signal It is also advantageous if a filter is arranged upstream and / or downstream of the safety valve in the direction of flow S1.
• a pressure control valve can advantageously be arranged downstream of the safety valve in the direction of flow S1, ie provided downstream of the safety valve and configured to reduce a gas pressure accumulator pressure Pi to a working pressure P2 of a consumer to be supplied with the gas or fuel / or to regulate.
• gas pressure accumulator pressure Pi is to be understood as the pressure that is present, for example, in a closed gas pressure accumulator that is at least partially filled with a fuel. However, this can also be the pressure that is applied to the safety valve , and from several pressure accumulators, which are combined to form a gas pressure storage system, is fed.
• the pressure of the stored fuel in particular of the stored hydrogen, can be up to 900 bar.
• the protective valve must be able to withstand a pressure of up to 900 bar, preferably up to 700 or 875 bar, and in particular be able to close and open against a pressure of up to 900 bar, preferably 700 or 875 bar.
• working pressure P2 is to be understood as the pressure which is made available by the valve device to a consumer connected downstream of the valve device or to a plurality of consumers connected downstream the working pressure P2 is determined by the consumer to be supplied with fuel by the valve device or by the fuel supply system. If, for example, the consumer is a fuel cell, the working pressure can be P210 bar.
• the valve device has a first overpressure device, in particular an overpressure valve, which is set up to limit the working pressure P2 regulated by the pressure regulating valve to a preset limit value.
• a first overpressure device in particular an overpressure valve
• the working pressure can be limited to 20 bar, which ensures that in the event of an anomaly / fault in the pressure regulating valve of the valve device, the downstream consumer, in particular the fuel cells, is not damaged by an excessively high gas pressure.
• a second overpressure device in particular a bursting disc, is provided which is designed to protect a gas pressure accumulator connected to the valve device from overpressure.
• the second overpressure device is not connected to the line section via which the protective valve is connected to the gas pressure accumulator or the gas pressure accumulator system, but rather via a separate pipeline to the gas pressure accumulator or the gas pressure accumulator.
• a separate pipeline it can also be used to apply the gas pressure accumulator pressure Pi present in the gas pressure accumulator (s) to the pressure detection unit.
• the individual gas pressure accumulators are not damaged, i.e. are not filled above their maximum permissible pressure .
• the overpressure device opens a fluid connection to a relief connection and releases the gas or fuel into the environment. This can be done, for example, by bursting the rupture disk, which also ensures that the overpressure device remains in the open state.
• valve device has a thermal pressure relief device which is set up to transfer the fuel stored under pressure in a gas pressure accumulator connected to the valve device at a predetermined temperature limit value to vent a discharge port to the ambient air.
• the thermal pressure relief device can preferably have an actuating element which, when the predetermined temperature limit value is reached, opens a valve of the pressure relief device, in particular an irreversible one, the actuating element preferably being formed by a glass body which bursts when the predetermined temperature limit value is reached and thereby actuates the Releases valve, or is formed by a liquid preferably integrated into the gas pressure accumulator, which by expanding its own volume when the predetermined temperature limit value is reached, a mechanism, in particular a Piston system, which triggers the valve of the
• Pressure relief device actuates or opens.
• the pressure relief device (109) is instructed and / or actuated to open by an external pulse, in particular an external control command, the external pulse being able to be sent by an external controller.
• the temperature detection unit and the pressure detection unit are arranged upstream of the safety valve in a flow direction S1 of the gas flowing through the line piece, with at least the measuring points preferably being arranged within a gas pressure accumulator are.
• the safety valve to lock the fuel stored in a gas pressure accumulator, for example, into the gas pressure accumulator, or to prevent the fuel from flowing out of the gas pressure accumulator, and thus to create a static state in the gas pressure accumulator or the gas pressure storage system.
• the valve device has a control device which is set up to receive signals, in particular measurement signals from the temperature detection unit and / or the pressure detection unit and / or external sensors and / or a temperature sensor provided on the gas pressure accumulator, in order to process these signals and to output corresponding control signals, in particular to output them to the safety valve and / or the pressure regulating valve and / or the thermal pressure relief device.
• a control device which is set up to receive signals, in particular measurement signals from the temperature detection unit and / or the pressure detection unit and / or external sensors and / or a temperature sensor provided on the gas pressure accumulator, in order to process these signals and to output corresponding control signals, in particular to output them to the safety valve and / or the pressure regulating valve and / or the thermal pressure relief device.
• an autarkic system can be created that controls or regulates itself independently without the involvement of an external control such as the control of a fuel cell system or a vehicle.
• This also has the advantage that a complex cable harness, which connects the individual components of the valve device to an external control, can be dispensed with.
• it is only necessary, if desired, to connect the control device to an external control for signaling purposes.
• a vehicle controller can send a start signal to the control device, which then initiates and controls all the steps necessary to start the operation of the downstream fuel cell system.
• control device is set up to carry out a leak test of the line section, in particular a gas pressure storage system connected to the line section, to bring the safety valve into a closed position and then for a predetermined period of time by means of the temperature detection unit and the pressure detection unit Variety of temperature and pressure values on the safety valve to determine the pending gas or fuel and to carry out the leak test based on the determined temperature and pressure values.
• the temperature and pressure values are determined within the connected gas pressure accumulator and / or preferably at several measuring points within the connected gas pressure accumulator system.
• the plurality of recorded temperature and pressure values are preferably compared with one another to determine a characteristic value of the stability and / or a tendency. If the characteristic value of the stability and / or the tendency lies within a predetermined range, the line section, in particular the gas pressure storage system connected to the line section, is tight. I.e. there is no leakage.
• the term “tendency” defines a change in the recorded temperature and / or the recorded pressure that lasts at least for a certain period of time detected pressure over a predetermined period of time.
• the valve device has a communication device, which can advantageously be a wireless communication device using infrared, radio, Bluetooth or WLAN (wireless local area network), which is set up to transfer data or information such as Pressures (R, P 2) , temperatures, opening and closing cycles and / or opening and closing positions of the individual valves, in particular the safety valve and / or the pressure regulating valve to send / transmit external users (in English "clients").
• a communication device can advantageously be a wireless communication device using infrared, radio, Bluetooth or WLAN (wireless local area network), which is set up to transfer data or information such as Pressures (R, P 2) , temperatures, opening and closing cycles and / or opening and closing positions of the individual valves, in particular the safety valve and / or the pressure regulating valve to send / transmit external users (in English "clients").
• a communication device in particular a wireless communication device, makes it possible, for example, during a refueling process of the gas pressure storage system through a refueling system, for the refueling system to communicate with the valve device before the start of the refueling process in order to query the integrity of the gas pressure storage system or the fuel supply system. If the refueling system determines that the gas pressure storage system to be refueled has, for example, a defect and / or a leak, the refueling system can refuse to start refueling or end the refueling process while refueling has already started.
• the communication device is set up to receive control commands from external users, such as an external control / main control of a vehicle, an emergency control system that can be operated by the fire brigade, the police or other auxiliary personnel, preferably for the control device to be able to receive.
• external users such as an external control / main control of a vehicle, an emergency control system that can be operated by the fire brigade, the police or other auxiliary personnel, preferably for the control device to be able to receive.
• the thermal pressure relief device can have a pulse-controlled valve, by means of which the pressure relief device can be controlled, in particular opened, remotely, for example via radio.
• controlled here means that the gas pressure accumulator or the gas pressure accumulator is emptied at a predetermined flow rate which is selected so that, on the one hand, the emptying does not take place too quickly, so that the gas pressure accumulator is undercooled, which may lead to damage to the gas pressure accumulator is prevented, but on the other hand it is ensured that the emptying takes place quickly enough so that in the event of a fire, for example, it can be guaranteed that the emptying takes place within a period of usually 3 to 5 minutes, so that the The integrity of the gas pressure accumulator can be guaranteed until the gas pressure accumulator is emptied, whereby the time it takes to empty the gas pressure container depends largely on its size.
• control device is set up to communicate with a refueling system by means of the communication device in order to exchange information or information with the refueling system, the information (s) being selected from the group: gas pressure accumulator pressure Pi, gas pressure accumulator temperature Ti, filling speed (1 / min) and tightness (there is no leakage) of the gas pressure accumulator, the valve device and / or the fuel supply system.
• valve device has a temperature control device which is set up to increase the gas or fuel flowing through the valve device, in particular after it has been reduced to working pressure P2 by the pressure regulating valve to condition a predetermined working temperature T A , in particular to cool and / or heat.
• the working temperature T A is also specified by the consumer to be supplied with gas or fuel, such as the fuel cell, for example.
• the working temperature T A as well as the working pressure P 2 can be dependent on the load condition of the consumer. For example, in the event of a cold start of the downstream fuel cell system, it can be started up at an increased operating temperature in order to bring the fuel cell system, in particular the fuel cells, to operating temperature more quickly.
• the temperature control device can have a heating and / or cooling register, the heating register being fed, for example, by waste heat from the fuel cell system.
• the temperature control device can also be equipped with an electrical heater in the form of heating coils.
• valve device is additionally equipped with a leakage detection device (sniffer system) which is set up to check or monitor the tightness of at least one component of the valve device, the component being selected from the group: safety valve, Excess flow valve, filter, pressure control valve, first overpressure device, second overpressure device, thermal pressure relief device, temperature control device, temperature detection unit and / or pressure detection unit.
• a leakage detection device seiffer system
• the leakage detection device can be designed in such a way that a so-called collecting chamber is provided in the valve device, in which a leakage sensor (sniffer) or gas sensor is arranged, which can detect the smallest amounts of gas.
• the individual components provided in the valve device such as the safety valve and / or the pressure regulating valve, are channeled into the collecting chamber, which means that the respective components are connected to the collecting chamber by a fluid-carrying channel, so that the escaping gas in the event of a leak in the respective component can flow or be conducted into the collecting chamber and is detected there by the gas sensor.
• a large number of interfaces or components can be checked or monitored for leaks.
• the valve device has an orientation detection device which is set up to detect the absolute geometric orientation of the valve device, in particular at least one gas pressure accumulator connected to the valve device, in space (in three-dimensional space), the orientation Detection device has at least one sensor selected from the group: accelerometer, gyroscope and geomagnetic field sensor.
• control device is set up to select a relief connection based on an alignment of the valve device determined or detected by the alignment detection device, by means of which a gas pressure accumulator can be emptied in a predetermined secure spatial direction.
• the valve device can have a multiplicity of relief connections which can each be opened or closed by a valve provided, in particular a solenoid valve.
• Relief pipelines can advantageously be provided at the respective relief connections, which are oriented in different spatial directions in order to discharge the fuel in a desired or advantageous spatial direction in the event of an accident in the vehicle.
• the relief pipelines are preferably arranged in such a way that the discharged fuel cannot damage any safety-relevant components of the vehicle, in particular the fuel supply system, and does not prevent access to the vehicle.
• a relief pipe is selected which discharges the fuel upwards, i.e. in a vertical direction, so that lateral access to the vehicle, especially for rescue teams, is is guaranteed.
• the valve device has an electrical and / or electronic interface by means of which the valve device can be connected to external components / devices in an electrically and / or electronically conductive manner, the external components / devices being selected from the group: Power source such as a battery, a controller / main controller of a vehicle, a controller of a fuel cell, and the like.
• Power source such as a battery, a controller / main controller of a vehicle, a controller of a fuel cell, and the like.
• an external vehicle controller can access the parameters such as pressures and / or temperatures detected by the valve device without using the respective sensors to be wired directly, which drastically reduces the cabling effort.
• valve device has a connection area which is set up to electrically and / or electronically connect external components / devices to the valve device, the external components / devices being selected from the group: external sensors such as the one on the Gas pressure accumulator provided temperature sensor, in-tank valves and the like.
• the electrical and / or electronic interface can be implemented here, for example, in the form of a CAN bus.
• connection area differs from the aforementioned electrical and / or electronic interface in that it has a large number of connection terminals according to the requirements, by means of which the individual external components, which, however, preferably belong to the fuel supply system or gas pressure storage system, are connected to the valve device be able.
• the sensor signals that are transmitted to the valve device in this way can then be bundled and forwarded to one or more external controls through the electrical and / or electronic interface.
• control device of the valve device is set up to record and / or log refueling cycles of at least one gas pressure accumulator connected to the valve device, and / or the control device is set up to detect a leak, in particular by means of the leak -Detection device to end a refueling of at least one pressure accumulator connected to the valve device or not to start it at all.
• the valve device has a power generating device, wherein the
• Electricity generating device has at least one converter which is set up for flow energy, in particular
• the fuel in particular the hydrogen
• the pressure can be up to 1000 bar.
• a corresponding amount of potential energy is stored in the gas pressure accumulator or gas pressure accumulators, which is converted into kinetic energy or flow energy when the fuel is removed from the individual gas pressure accumulator.
• This kinetic energy or flow energy produced when the fuel flows out of the gas pressure accumulator or the gas pressure accumulator when the downstream consumer is in operation can be used by the
• Power generating device can be converted into electrical energy, in particular electricity.
• the electrical current generated in this way can, for example, be fed to an accumulator and temporarily stored therein. If necessary, the electrical current obtained in this way can be used, for example, for conditioning the fuel, in particular the hydrogen, for operating the downstream consumer.
• the converter is designed in the form of a turbine, wherein the turbine can preferably have a plurality of blades on a hub, one or more wind turbines, and the same, and the converter through Conversion of the flow energy or the internal energy of the flowing fuel into mechanical energy causes an output shaft to rotate, the generator preferably being driven by the output shaft of the converter and thereby generating electrical power.
• the power generating device can be integrated directly into the valve device, in particular a valve block of the valve device, or it can be connected upstream of the valve device, that is to say it can be designed as a separate assembly.
• the power generating device upstream of the pressure regulating valve of the valve device, in particular directly at the inlet of the valve device.
• the converter in particular the turbine, controls or controls the drop in internal energy or the delta P (pressure of the fuel upstream of the converter - the pressure of the fuel downstream of the converter) depending on the pressure present in the gas pressure container . regulates.
• the converter can reduce a large delta P (internal energy), whereas if the pressure of the fuel in the gas pressure tank approaches the working pressure of the downstream consumer, the delta P must be reduced by one to be able to guarantee sufficient working pressure.
• the present invention also relates to a gas pressure accumulator with a connection piece into which a valve device as described above or an in-tank valve as described above can be introduced. If necessary, the valve device and / or the gas pressure accumulator is provided with seals in order to position the valve device in a gas-tight manner within the connecting piece of the gas pressure accumulator.
• Gas pressure accumulators of the generic type are usually designed as hollow bodies which are formed from a multi-layer laminate, in particular a multi-layer plastic laminate.
• the laminate made of plastic can preferably be provided with a reinforcing fiber material, for example with carbon fibers or with glass fibers, in order to increase its stability.
• the connecting piece is introduced into this laminate and is usually provided with an internal thread into which a mating thread, which is provided on the connecting piece of the valve device, can be screwed in order to attach the valve device, in particular the in-tank valve, to the gas pressure accumulator, preferably in it.
• At least one sensor such as a temperature or tension sensor (strain gauge) is embedded in the laminate of the gas pressure accumulator. This makes it possible to collect additional information about the integrity of the gas pressure accumulator and to display it forward the valve device.
• a temperature or tension sensor strain gauge
• the present invention also relates to a gas pressure storage system for storing fuel, in particular hydrogen, which is preferably set up to supply a fuel cell system with fuel, in particular hydrogen, comprising: at least one gas pressure storage device, preferably the gas pressure storage device described above with an integrated connection piece, and a valve device , preferably the valve device described above and / or at least one in-tank valve, this preferably being the in-tank valve described above.
• the individual gas pressure accumulators are designed to be smaller, in particular smaller in diameter can, and thus the gas pressure storage system, in particular the gas pressure storage assembly, can be accommodated more easily in a vehicle.
• the gas pressure storage system in particular the gas pressure storage assembly
• the number and size of the gas pressure accumulator (s) can be selected as a function of the requirements and space conditions of the respective vehicle in which the gas pressure accumulator system is to be implemented.
• the gas pressure accumulator system has at least two gas pressure accumulators, which are each provided with an in-tank valve and are connected to one another in a gas-carrying manner by means of a valve device, so that a fuel supply system can be supplied with a fuel that is stored in the two gas pressure accumulators under high pressure is.
• the two in-tank valves can be provided with a minimum number of components / functions that are mainly used to ensure emergency functions such as shutting off the respective gas pressure accumulator in the event of a leak in the gas pressure accumulator system or in the fuel supply system.
• this can include the provision of an excess flow valve, whereby it can be ensured that in the event of an accident the fuel can be discharged in a controlled manner, although the downstream fuel supply system is no longer intact, in particular has leaks.
• such a gas pressure accumulator system offers the advantage that the other functionalities such as control, interfaces, pressure regulation, pressure limitation and the like can be provided collectively in the valve device for all gas pressure accumulators, thus reducing the number of components and reducing the amount of cabling and thus the manufacturing costs and maintenance costs can be reduced.
• the present invention also relates to a fuel supply system which is preferably set up to supply a fuel cell system with fuel, in particular hydrogen, the fuel supply system having the valve device described above and possibly the gas pressure storage system described above.
• the present invention also relates to a method for detecting a possible leak, a gas leak, in a fuel supply system, in particular a gas pressure storage system for storing fuel, in particular hydrogen, which is preferably set up to include a fuel cell system with fuel, in particular
• the safety valve is pressurized
• the temperature and pressure values are preferably determined within a connected pressure accumulator and / or at several measuring points within a connected gas pressure storage system.
• the multiple measuring points can be selected such that they are provided within a large number of pressure accumulators and / or at line junctions and / or valves of the gas pressure accumulator system.
• the plurality of determined temperature and pressure values are compared with one another to determine a characteristic value of stability and / or a tendency the gas pressure storage system connected to the line section, tight. In other words, there is no leakage.
• the predetermined range (tolerance range) for the characteristic value of the stability and / or the tendency is based on influencing parameters from the group: outside temperature, starting temperature, starting pressure, is there a refueling or emptying process, solar radiation, Gas accumulator size, refueling or emptying speed and the like determined.
• the present invention further relates to a valve arrangement of a valve device, in particular the valve device described above, which is preferably used for a fire extinguishing system that preferably uses nitrogen (N 2) as the extinguishing agent, comprising: a main supply line, a main valve integrated into the main supply line, the main valve between an open position in which gas is passed through the Main supply line can flow, and a closed position in which no gas can flow through the main supply line, adjustable, and a pressure control valve which is configured to reduce and / or regulate a pressure of the gas flowing through the main supply line, the main valve by means of a pulse-controlled actuating valve, in particular indirectly, can be brought or switched into the open position, and the valve arrangement is designed such that the main valve remains in the open position, even if an actuation by the pulse-controlled actuating valve is released and / or interrupted.
• N 2 nitrogen
• the term "released” means that the actuating valve is released actively or inactive, for example by a voltage drop Pressure of a compressed air or control air, which is used to open the main valve, in particular to open it permanently, is reduced.
• the main valve can be brought into the open position by actuating the pulse-controlled actuating valve, in particular manually actuating the actuating valve, the actuating valve preferably being a pulse-controlled solenoid valve.
• the main valve can be actuated indirectly via a piston system by the actuating valve, the piston system preferably having a control piston with a tappet and a pressure element.
• control piston is under pressure on a pressure side when the actuating valve is actuated is acted upon, in particular by opening an inlet line through the actuating valve.
• the main valve has a closing element which is acted upon by the pressure element of the piston system against a preferably conical valve seat, whereby the main valve is closed in the non-actuated state, the pressure element preferably being pressed / acted upon by a spring in the direction of the valve seat .
• the actuating valve can be actuated pneumatically, electrically (for example by a switching pulse of approx. 24 V) or externally controlled.
• the valve arrangement has a check valve which is arranged in the inlet line for supplying the piston system with compressed air / control air in the flow direction upstream of the actuating valve, and prevents the compressed air / control air applied to the control piston from escaping.
• the size of the piston area of the control piston is selected such that the main valve remains in the open position even if the pressure on the pressure side of the control piston drops, for example due to a leak or failure of the actuating valve down to a predetermined minimum pressure.
• the generated piston force which acts on the pressure element via the tappet, is greater than the counteracting spring force / closing force even at a predetermined minimum pressure.
• valve arrangement has a release valve, which is preferably a needle valve Ball valve or a slowly opening valve that is set up to (again) reduce the pressure on the pressure side of the control piston when actuated, in particular manual actuation, in particular after actuation of the actuating valve, whereby the main valve can return to the closed state.
• a release valve which is preferably a needle valve Ball valve or a slowly opening valve that is set up to (again) reduce the pressure on the pressure side of the control piston when actuated, in particular manual actuation, in particular after actuation of the actuating valve, whereby the main valve can return to the closed state.
• Fig. 1 is a perspective view of a
• FIG. 2 shows a diagram of a fuel supply system according to the prior art
• FIG. 3 shows a simplified embodiment of a valve device according to the invention
• FIG. 4 shows a pipeline and instrument flow diagram of an embodiment of a valve device according to the invention
• FIG. 5 shows a simplified embodiment of a gas pressure storage system according to the invention
• Fig. 6 shows a further embodiment of a valve device according to the invention, the valve device shown being a further development of the valve device shown in Figures 3 to 5,
• Fig. 7 shows schematically a perspective view of an embodiment of a gas pressure storage system according to the invention
• 8 schematically shows a perspective view of a further embodiment of a gas pressure storage system according to the invention
• FIG. 1 shows a perspective view of a high-pressure container unit 10 according to the prior art.
• the high-pressure container unit 10 shown comprises a box-like housing 22, a plurality of cylindrical containers 18 which are lined up inside the housing 22, each container 18 including an opening 30B at an end portion on one side in the axial direction, a coupling element 20 which connects the Openings 30B connect to couple the plurality of containers 18 together and that includes a flow passage that communicates the interiors of the plurality of containers 18 with one another.
• the high pressure container unit 10 described has a discharge line 32 which leads from the coupling element 20 through a through hole 46A formed in the housing 22 to the exterior of the housing 22, a valve 34 being connected to the discharge line 32, which opens and closes the flow passage can.
• the illustrated high-pressure container unit 10 cannot close the respective containers 18 (gas pressure accumulators) separately, but only together via the valve 34 Coupling element 20 from the entire high-pressure container unit 10.
• Fig. 2 shows a diagram of a fuel supply system 110 according to the prior art, which can be used, for example, in an aircraft.
• the fuel supply system 110 described has a fuel tank 112, a supply line 114 which connects the fuel tank 112 with an inlet 116 of a fuel cell 118, a tank isolation valve 128 arranged in the supply line 114, a discharge line 146 which connects an outlet 120 of the fuel cell 118 with an unprinted one Area of the aircraft and / or the outside atmosphere connects, and a sensor 144 for detecting an electrical voltage in the fuel cell 118.
• tank isolation valve 128 shut off the single fuel tank 112, to isolate it, so to speak, but the tank isolation valve 128 is not installed directly on the fuel tank 112, which means that in the event of a leak between the fuel tank 112 and the tank isolation valve 128 there is no possibility of close the gas leak by closing tank isolation valve 128. After the tank isolation valve 128 has been closed, it is also not possible to provide any information about the integrity of the fuel tank 112 and the pipeline connecting it.
• FIG. 3 illustrates in a simplified manner an embodiment of a valve device 100 according to the invention, which in the illustrated embodiment is designed as an in-tank valve (OTV) 200, in particular as an OTV-R, ie an in-tank valve with pressure control valve 107.
• the in-tank valve 200 has a temperature detection unit 101 and a pressure detection unit 102.
• the temperature detection unit 101 is directly on a connection piece 111 of the In-tank valve 200, by means of which the in-tank valve is attached to a gas pressure accumulator 300, in particular is screwed into it.
• the temperature detection unit 101 is provided at the end of the connection piece 111 which protrudes into the gas pressure accumulator 300.
• the temperature detection unit 101 is in direct contact with the fuel stored in the gas pressure accumulator 300.
• the pressure detection unit 102 is accommodated in an external component which is connected to the in-tank valve 200 in a gas-tight manner, in particular is screwed on.
• the pressure detection unit 102 is in contact with the stored fuel (fuel gas or hydrogen) via an independent fluid line which at least partially runs through the connecting piece 111.
• the pressure detection unit 102 can directly detect or measure the pressure (gas pressure accumulator pressure Pi) prevailing in the gas pressure accumulator 300.
• the in-tank valve 200 shown has a safety valve 104 integrated into a line section 103, the preferably pulse-controlled safety valve 104 between an open position in which gas can flow through the line section 103 and a closed position in which no gas can flow through the line section 103 can flow, can be adjusted.
• the line section 103 serves to make the fuel stored in the gas pressure accumulator 300 under high pressure (up to 900 bar) available to a downstream consumer (not shown) via a supply connection A2.
• the two detection units which are designed as sensors, can directly detect the temperature and the pressure of the fuel locked in the gas pressure accumulator by the safety valve 104.
• the fuel stored in the gas pressure reservoir under high pressure flows via the line section 103 in the direction of the supply connection A2, whereby the stored fuel is available to a downstream consumer is provided.
• the stored fuel Before reaching the safety valve 104, the stored fuel first flows through a filter 106 in order to remove impurities present in the stored fuel. The fuel then flows through an excess flow valve 105, whereby the maximum flow rate of the fuel flowing out of the gas pressure accumulator 300 is limited, in particular is limited in such a way that the maximum flow rate is determined somewhat higher than the maximum flow rate required by the connected consumer.
• the pressure control valve 107 is provided in the line section 103 in the flow direction S1, which reduces and / or regulates the gas pressure (gas pressure accumulator pressure) Pi introduced by the gas pressure accumulator 300 to a preset working pressure P2 or working pressure P2 adapted to the workload of the downstream consumer.
• a check valve is arranged between the safety valve 104 and the pressure regulating valve 107 in such a way that a backflow from the pressure regulating valve 107 in the direction of the safety valve 104 is prevented.
• a further, preferably magnetic, safety valve is arranged after the pressure regulating valve 107, whereby this safety valve makes it possible to shut off or lock in the fuel that has already been reduced to working pressure P2 in the valve device 100, in particular the in-tank valve 200 and to run the consumer arranged afterwards, for example a fuel cell system, empty.
• the further safety valve is designed in such a way that it can only open up to a predetermined pressure such as 50 bar, i.e. a pressure which is on the one hand lower than the maximum pressure of 350 bar, 700 bar prevailing in the gas pressure accumulator 300, 875 bar or 900 bar and, on the other hand, greater than the working pressure P2 required by the downstream consumer.
• the in-tank valve 200 shown has a first overpressure device 110 in the form of an overpressure valve, which in the embodiment shown is set to a pressure of 19 bar, so that the working pressure P2 applied to the downstream consumer is limited to 19 bar. If the pressure regulating valve 107 has a malfunction and, for example, reduces the pressure of the fuel to only 50 bar, the pressure relief valve 110 opens and releases the excess fuel to the environment via the relief connection A3.
• the in-tank valve 200 shown also has a second one Overpressure device 108, which is designed as a rupture disk and is set up to protect the gas pressure accumulator 300 connected to the in-tank valve 200 from overpressure.
• the in-tank valve 200 has a thermal pressure relief device 109 which is set up to open at a predetermined temperature limit value, ie to open a valve of the pressure relief device 109 that is closed by default, in order to supply the fuel stored in the gas pressure accumulator 300 via the relief connection A3 to drain the environment.
• the pressure relief device 109 is designed in such a way that the fuel cannot escape too quickly in order to protect the gas pressure accumulator 300 from damage, but still allow the fuel to escape at a sufficiently high speed, usually within 3 to 5 minutes, so that the integrity of the gas pressure accumulator 300 can be guaranteed until it is completely emptied.
• the pressure relief device 109 can be arranged parallel to the second overpressure device 108 (rupture disk) and the pressure detection unit 102 in a fluid line which connects the relief connection A3 to the interior (storage space) of the gas pressure accumulator 300 in a fluid-carrying manner. Furthermore, the pressure relief device 109 can be irreversibly actuated, ie opened, by bursting a glass body, the bursting of the glass body being set so that the bursting occurs at a predetermined temperature and possibly only after the predetermined temperature has been reached for a predetermined period of time.
• the pressure relief device can also be actuated by an external pulse or by activation.
• the in-tank valve shown has a control device 120 which can serve to evaluate the values recorded by the recording devices 101 and 102 and, if necessary, to log them and, based on the recorded values, an integrity state of the gas pressure accumulator 300 and the in-tank valve 200 to determine.
• the control device 120 is also set up to control a fuel supply process of the downstream consumer based on the detected values, in particular to open or close the pressure regulating valve 107 accordingly.
• the pressure control valve can also be partially opened or closed, so that degrees of opening between 0% and 100% are also possible.
• the in-tank valve 200 shown in FIG. 3 has a communication device which has, for example, a Bluetooth and a WLAN antenna, by means of which the in-tank valve 200 can communicate wirelessly with external users. Furthermore, the in-tank valve shown has a leakage detection device as already described in detail above.
• the in-tank valve 200 shown has a refueling connection (filling connection) Al, by means of which the gas pressure accumulator can be filled with gas, in particular fuel.
• the in-tank valve 200 shown has a separate refueling channel in which the fuel introduced is conducted into the gas pressure accumulator 300 in the flow direction S2.
• a filter is in turn provided in the refueling channel in order to prevent impurities which are present in the fuel to be filled from reaching the gas pressure accumulator 300 and accumulating therein.
• a check valve or several check valves connected one behind the other are arranged, which prevent the filled fuel from flowing back to the filter.
• a further non-return valve is provided at the end of the refueling channel facing the gas pressure accumulator 300, which prevents the filled fuel from escaping via the refueling connection A1.
• FIG. 4 shows a pipeline and instrument flow diagram of an embodiment of a valve device 100 according to the invention, the valve device 100 shown corresponding in terms of its basic structure to the in-tank valve 200 shown in FIG.
• the valve device 100 shown in particular the gas handling device, has six interfaces with which the valve device 100 can be connected to external components, in particular can be connected in a fluid-carrying manner.
• the interface 1 is used to connect an individual gas pressure accumulator 300 or a gas pressure accumulator system 400 to the valve device 100
• Fuel stored under high pressure in the gas pressure accumulator 300 can be supplied to a consumer, and two measurement and diagnosis paths.
• the first measurement and diagnosis path connects the interior (fuel filling) of the gas pressure accumulator 300 with a temperature element (temperature detection unit 101) provided in the valve device, by means of which the temperature of the fuel in the gas pressure accumulator 300 can be detected.
• the second measurement and diagnosis path is divided into three parallel paths / lines, on one of the three paths an interface 5 is formed on the one hand, to which an exchangeable / mountable pressure sensor element (pressure detection unit 102) is connected.
• the pressure sensor element connected to the interface 5 detects the pressure within the gas pressure accumulator 300 via the second measurement and diagnostic path.
• a rupture disk (overpressure device 108), which protects the connected gas pressure accumulator 300 from overpressure, is arranged in a second path.
• a predetermined limit value for example 900 bar
• a thermal pressure relief device (TPRD) is provided on the third path, which, when a predetermined limit value / maximum temperature is reached, for example in the event of an accident resulting in fire, also opens access to interface 4 (relief connection A3), whereby the one stored in gas pressure accumulator 300 Fuel can be released / drained into the environment in a controlled manner. A channeled release to the environment can take place here. This means that the direction of the release is chosen such that the outflowing fuel is released in a direction in which no components and / or people are endangered.
• a filter F2 As can also be seen from FIG. 4, a filter F2, a check valve CV2 and an excess flow valve EFV, the function of which has already been described in connection with FIG. 3, are arranged within the gas pressure accumulator 300.
• a safety valve SV1 In the main supply line, a safety valve SV1, a check valve CV3, a pressure control valve PR and a further safety valve SV2 are arranged in the direction of flow to an interface 3 to which a downstream consumer such as a fuel cell system can be connected, with both safety valves being designed as solenoid valves.
• an overpressure device PRV is connected downstream of the second safety valve SV2 in the direction of flow, which, when a preset maximum pressure is reached, which is selected so that the downstream consumer cannot be damaged, triggers and, in the actuated state, access to interface 4 (relief connection A3 ) opens, whereby the excess fuel can be drained to the outside.
• valve device 100 shown has an interface 2 via which, for example, a refueling system can be connected to the valve device 100 for filling the gas pressure accumulator 300.
• a filter F1 to which the gas pressure accumulator 300 is connected, a filter F1, a check valve CV1 and the check valve CV2 provided in the gas pressure accumulator 300 are arranged.
• the supply line (secondary supply line) is advantageously connected to the main supply line via a check valve CV4, in particular between the check valve CV3 and the pressure regulating valve PR.
• FIG. 5 shows a simplified embodiment of a gas pressure accumulator system 400 according to the invention, which, for example, consists of two gas pressure accumulators 300, two in-tank valves 200, each screwed into a gas pressure accumulator 300, and a valve device 100, which is designed as a gas handling device.
• the gas handling device comprises all of the components described in relation to the in-tank valve 200 shown in FIG. 3, or the functions associated therewith.
• the two in-tank valves 200 shown, on the other hand, are limited to the minimum necessary safety functions.
• the two in-tank valves 200 each have a safety valve 204 by means of which an undesired outflow of the fuel from the individual gas pressure accumulators 300 can be prevented, in particular in the event of an accident.
• the protection valves 204, as well as the protection valve 104 of the gas handling device 100 are self-closing valves.
• the in-tank valves 200 each include an excess flow valve 206 which is set up to limit the outflow of the fuel to a predetermined maximum value.
• the in-tank valves 200 have a refueling channel 207 which is provided with a check valve.
• a filter 205 is arranged upstream of the safety valve 204, in particular upstream of the excess flow valve 206.
• the two in-tank valves 200 also have a temperature and / or pressure detection device 201.
• the gas handling device 100 downstream of the in-tank valves 200 in the outflow direction S1 also has an excess flow valve 106 which is used to limit the flow rate of fuel accumulated by the plurality of connected gas pressure accumulators 300 (here two). Furthermore, the gas handling device 100 has a connection area 150, by means of which the two in-tank valves 200 are electrically and electronically connected to the gas Handling device 100, in particular its control device 120, are connected. In this way, the control device 120 can access the values or data ascertained by means of the temperature and / or pressure detection device 201 and accordingly actuate the safety valves 204 if necessary.
• FIG. 6 shows a pipeline and instrument flow diagram of a further embodiment of a valve device 100 according to the invention, the valve device shown being a further development of the valve device shown in FIGS.
• the valve device shown in FIG. 6 also has interfaces 1 to 4, only interfaces 5 (pressure detection unit 102) and 6 (signal connection) are missing. This is because the control device 120 and the pressure detection unit 102 are integrated directly into the valve device 100.
• an excess flow valve EFV1.1 in the illustrated embodiment of the valve device 1 in the flow direction from the interface 1 to the interface 3, to which a consumer can also be connected, in the main supply line an excess flow valve EFV1.1, a first manual valve (Safety valve) MV1.1, a filter Fl.l, a solenoid valve XV 1.1, a pressure control valve PRV1.1, a second filter Fl.2 and a second manual valve MV1.4.
• an overpressure device PSV1 is also provided here after the pressure control valve PRV1.1, which can discharge excess fuel to the outside via the interface 4.
• a pressure sensor PT1.1 and a temperature sensor TT1.1 are not only provided upstream of the pressure regulating valve PRV1.1, but also downstream of the pressure regulating valve PRV1.1 in the direction of flow Pressure sensor PT1.2 and a temperature sensor TT1.2 are provided.
• This design is particularly advantageous if the valve device 100 has a temperature control device 170.
• the state (temperature and pressure) of the fuel after the pressure has been reduced can be detected by the pressure regulating valve PRV1.1 and the temperature control device 170 controlled accordingly. In this way, it is possible to optimize the conditioning of the fuel for the downstream consumer.
• the additionally ascertained status information can be used to carry out the leak test.
• the tightness test in particular the tightness test of the gas pressure accumulator 300 and / or the gas pressure accumulator system 400, can be carried out more reliably in particular during the operation of the downstream consumer, in particular the fuel cell system, ie during a continuous outflow of the fuel stored in the gas pressure accumulator 300.
• FIG. 7 schematically shows a perspective view of an embodiment of a gas pressure storage system 400 according to the invention.
• the gas pressure storage system 400 shown consists of four gas pressure storage devices 300 arranged next to one another, each of which is provided with an in-tank valve 200 (OTV), which in turn are connected to one another via a fluid line.
• OTV in-tank valve 200
• the four in-tank valves 200 which are attached to the front of the gas pressure accumulator 300, each have a thermal pressure relief device (TPRD), a temperature and a pressure detection unit (TT, PT) and a solenoid valve ( SV). Furthermore, the four in-tank valves 200 are connected via lines to a common pressure control valve, which increases the pressure in the gas pressure accumulators 300 to a working pressure reduced. After the pressure control valve (PR), which also has a pressure detection unit (PT), the channeled fuel is fed via a line to a manual valve which is coupled to a safety valve.
• TPRD thermal pressure relief device
• TT, PT temperature and a pressure detection unit
• SV solenoid valve
• the four gas pressure accumulators are channeled to form a supply line via which the four gas pressure accumulators 300 can be refueled or filled.
• the relief outlets of the four thermal pressure relief devices (TPRDs) are also channeled in order to allow the fuel flowing out in an emergency to be channeled and directed, in particular in a required direction, via a common line.
• FIG. 8 schematically shows a perspective view of a further embodiment of a gas pressure storage system 400 according to the invention.
• the gas pressure storage system 400 shown has basically the same components as the gas pressure storage system 400 shown in FIG.
• the gas pressure storage system 400 shown in FIG. 8 differs, however, in that a large number of safety-relevant components, which were formed separately in the gas pressure storage system 400 of FIG. 7, are integrated in one unit, namely in a gas handling device 100.
• the pressure control valve (PR), the manual valve and the safety valve are integrated in the gas handling device.
• the solenoid valves (SV) provided in each of the in-tank valves 200 (OTVs) in FIG. 7 are implemented in the gas handling device 100 as a single solenoid valve (SV).
• FIG. 9 shows a sectional view of a further embodiment of a valve device 100 according to the invention.
• FIG. 9 is basically intended to show the concrete implementation of a main valve, which is preferably used in valve devices that are used, for example, for fire extinguishing systems that preferably use nitrogen as an extinguishing agent.
• the valve arrangement 500 of such a valve device has a main supply line 501, a main valve 502 integrated into the main supply line, the main valve between an open position, in which gas can flow through the main supply line 501, and a closed position, in which no gas can flow through the main supply line 501 is adjustable, and a pressure regulating valve 503 which is configured to reduce and / or regulate a pressure of the gas flowing through the main supply line.
• the main valve 502 can be actuated indirectly via a piston system 505 by means of a pulse-controlled actuating valve 504, which is designed as a solenoid valve, the piston system 505 having a control piston 506 with a plunger and a pressure element 507.
• the actuating valve 504 If the actuating valve 504 is actuated, it opens an inlet line 508, via which the control piston 506, in particular a pressure side of the control piston, is supplied or acted upon with compressed air or control air.
• a check valve 510 is arranged upstream of the actuating valve 504 in the direction of flow of the compressed air or control air, which prevents the pressure applied on the pressure side of the control piston from being exerted on the pressure side of the control piston even in the event that the actuating valve is only actuated for a short time or is released due to a defect sinks. As can also be seen in FIG.
• the actuating valve 504 is now actuated and compressed air or control air is present on the pressure side of the control piston 506, this is pressed in the direction of the main valve 502, in particular the closing element 509 of the main valve 502, and since the piston force generated by the control piston 506 is greater as the spring force of the spring 512, the tappet of the control piston 506 pushes the pressure element 507 against the spring 512 whereby the closing element 509 is released and is pushed away from the valve seat by the pressure of the gas (useful gas).
• the main valve 502 is in the open position.
• valve arrangement 500 in particular a size of the piston area of the control piston 506, is selected in such a way that, even if the pressure on the pressure side of the control piston drops, which can happen, for example, due to a leakage and failure of the actuating valve, down to a predetermined minimum pressure, the main valve 502 remains in the open position.
• the generated piston force which acts on the pressure element via the plunger, is greater than the counteracting spring force / closing force even at a predetermined minimum pressure.
• a release valve 511 must be actuated manually. If the release valve 511 is actuated, the pressure on the pressure side of the control piston is reduced, as a result of which the main valve 502 returns to the closed state. It is evident to the person skilled in the art that individual features, each described in different embodiments, can also be implemented in a single embodiment, provided that they are not structurally incompatible. Likewise, various features that are described in the context of a single embodiment can also be provided in several embodiments individually or in any suitable sub-combination.

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• 2020
  • 2020-06-10 DE DE102020207253.1A patent/DE102020207253A1/de active Pending
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  • 2020-12-18 CN CN202023081380.6U patent/CN215418248U/zh active Active
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• 2021
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