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
  • F17C13/023—Special adaptations of indicating, measuring, or monitoring equipment having the mass 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
  • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume 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
  • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
  • F17C5/002—Automated filling apparatus
  • F17C5/007—Automated filling apparatus for individual gas tanks or containers, e.g. in vehicles
• • 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
  • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
  • F17C2227/03—Heat exchange with the fluid
  • F17C2227/0302—Heat exchange with the fluid by heating
  • F17C2227/0325—Heat exchange with the fluid by heating by expansion using "Joule-Thompson" effect
• • 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
  • F17C2250/0426—Volume
• • 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
  • F17C2250/0443—Flow or movement of content
• • 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
  • F17C2250/0486—Indicating or measuring characterised by the location
  • F17C2250/0495—Indicating or measuring characterised by the location the indicated parameter is a converted measured 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
  • F17C2265/00—Effects achieved by gas storage or gas handling
  • F17C2265/06—Fluid distribution
• • 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
  • F17C2265/00—Effects achieved by gas storage or gas handling
  • F17C2265/06—Fluid distribution
  • F17C2265/065—Fluid distribution for refueling vehicle fuel tanks
• • 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
  • F17C2270/0134—Applications for fluid transport or storage placed above the ground
  • F17C2270/0139—Fuel stations
• • 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 invention relates to a method for determining an amount of gaseous fuel, which has been transferred in a refueling at a gas station, via a gas pump and a filling hose connected thereto, in a storage tank wherein in the gas pump of the gas station, a flow meter is provided, which during the Filling the storage tank determines the amount of fuel delivered and that after completion of filling the filling tube is relaxed.
• Hydrogen compared to natural gas or LPG are new developments of refueling processes and others, especially for refueling with hydrogen
• Components of a hydrogen filling station include a storage device in which the hydrogen can be stored in liquid and / or gaseous form. Preference is given to a liquid storage, since the storage density is higher. The disadvantage of this, however, is the low temperature of the liquid hydrogen. This is often how it works
• Gas storage wherein hydrogen is stored at ambient temperature, but to a pressure of up to 1000 bar, in particular up to 910 bar, is compressed.
• Modern hydrogen vehicles preferably have a fuel tank for storing gaseous hydrogen at 350 or 700 bar.
• the temperature of the hydrogen which is filled into the fuel tank should have a filling temperature between -33 to -40 ° C. This temperature is given by different standards and standard protocols.
• Components of a hydrogen filling station are therefore usually additionally at least one pump, in particular a cryopump in liquid storage of hydrogen, a plurality of heat exchange devices, a plurality of pressure control valves, in particular cryogenic high-pressure throttle valves and temperature, pressure and flow control.
• Another component of a hydrogen filling station is at least one dispenser, to which the dispensing gun and the corresponding filling hose are accessible to the customer.
• the dispenser additionally has electronic devices, in particular for controlling the dispensing and billing of the dispensed, that is the dispensed, hydrogen.
• Hydrogen fueling stations which are particularly accessible to private customers, are subject to strict requirements with regard to the accuracy of the measurement of the amount of hydrogen delivered. Both customers and operators need accurate information about the amount of hydrogen delivered.
• the amount of hydrogen which is in the filling hose between the pump and the vehicle tank and which is no longer transferred into the tank due to the termination of the refueling process is also included.
• Hydrogen supply interrupts is still in the filling hose and by a
• the filling hose is, similar to conventional filling stations for liquid fuel, a flexible hose with a refueling coupling, wherein in particular the part of the filling hose which is located inside or on the pump can also be designed as a solid hose or as a pipeline.
• Filling hose used as a representative of the entire volume between the shut-off valve or flow meter and the fuel nozzle.
• the amount of hydrogen which can no longer be transferred to the vehicle tank has already been detected by the flowmeter and is charged as the delivered quantity.
• the closure mechanism or seal in the fuel nozzle and the shut-off valve in the fuel pump close.
• the filling hose is under high pressure after completion of the refueling process. Therefore, before the refueling coupling can be released from the motor vehicle, the hose must be relaxed. This is necessary on the one hand for safety reasons, on the other hand also to restore the flexibility of the filling hose. For safety reasons, the decoupling of a pressurized refueling coupling is usually not possible. A high pressure hose loses its flexibility and is difficult to handle.
• the flexibility of the filling hose must be ensured before and after refueling so that the hose can be aligned towards the vehicle as required before starting the filling process and can be connected to the storage tank and thus after completion of refueling the hose can be returned to the provided bracket.
• the invention is therefore based on the object of specifying a method with which an accurate measurement and thus accurate billing of the gaseous fuel takes place.
• This object is achieved by the method in that the amount of fuel is determined which has not been transferred by the relaxation in the storage tank and that this amount is deducted from the amount which has determined the flow meter.
• the amount of fuel in the filling hose, which has not been transferred to the storage tank determined by the fact that after completion of the
• Refueling method and before each relaxing a temperature value and a pressure in the filling hose are determined to a density of hydrogen in the filling hose to determine and that the volume of the filling hose is known and that thereby the amount of fuel delivered, which after completion of filling in the
• Filling hose is left, is determined.
• the density of the relaxed gaseous fuel p e is calculated in particular via a state equation known to the person skilled in the art.
• the required parameters temperature and pressure are set after completion of filling and before
• M e p e ⁇ V e is calculated the amount of gaseous fuel e which has been decompressed.
• the volume V e of the relaxed filling hose is known.
• the mass of gaseous fuel, which is still in the filling hose is dependent on the pipe geometry, the pressure and the temperature and can be between 0.1 and 100 g, but in particular between 1 and 25 g. This mass is advantageously at the relaxation over a chimney to the
• Temperature value in the filling hose is determined and a preset pressure value is used to determine a density of the fuel in the filling hose and that the volume of the filling hose is known and thereby the amount of fuel delivered, which has remained in the filling hose after completion of filling, is determined .
• the preset pressure value is preferably the maximum pressure of the vehicle tank. In this calculation, the assumption is made that the storage tank is always completely filled. The deviations can therefore be small and tolerable depending on the calibration method.
• the amount of fuel in the filling hose which has not been transferred to the storage tank is determined by determining a pressure value in the filling hose after completion of the refueling method and before releasing and using a preset temperature value, to determine a density of the fuel in the filling hose and that the volume of the filling hose is known and that thereby the delivered amount of fuel, which has remained after completion of filling in the filling hose is determined. Since refueling is preferably carried out according to a standardized refueling method, a narrow temperature range is provided for the fuel. Therefore, in such a configuration, it is possible to use a temperature value which is within this temperature range as the predetermined temperature value. Yes, after the calibration accuracy provided, the deviation that has occurred can be tolerated.
• the gaseous fuel is preferably hydrogen. In another embodiment of the invention, however, the application would be possible for natural gas, LPG or other gases.
• the flowmeter is a Coriolis flowmeter or a differential pressure flowmeter.
• the flowmeter is a Coriolis flowmeter or a differential pressure flowmeter.
• a mass flow is detected or detected a pulse.
• sensors are provided in or on the filling hose, which determine a temperature value and a pressure value.
• the pressure during filling in the filling hose is preferably between 0 and 875 bar and in particular between 350 and 810 bar. After relaxation, the pressure in the filling hose is between 0 and 2 bar.
• All device components and the control and accounting units can in particular be designed so that they are protected against manipulation. This avoids that from the outside the control of the gas station or billing can be manipulated unintentionally.
• the advantages of the invention are that an exact amount of hydrogen can be calculated for the customer.
• the operator of the gas station also has precise information about how much hydrogen was drained and how much loss of hydrogen caused by the relaxation.
• By the specified method is also a rule compliant calibration of
• the calibration can also be carried out in particular for different quantities. This is of particular importance if, before refueling, the receiver tank was still partially filled or not completely filled.
• the back-flowing amount can be detected and subtracted from the previously measured amount.
• FIG. 2 shows an alternative schematic construction of a gaseous fuel dispenser.
• FIG. 1 schematically shows the most important components of a gas pump of a gaseous fuel filling station.
• the fuel is fed via pipe 1 from a pump, not shown, and / or from a storage tank to the dispenser 3.
• the tube 1 is provided with the insulation 2 accordingly.
• the insulation 2 serves to fuel to keep at the desired temperature.
• the temperature is controlled by the skilled person known methods and can be done depending on the method at different place in the gas station.
• the check valve 5 is attached to the pipe 1.
• the check valve 5 is configured in the illustrated variant of the invention as a pressure regulator. Downstream of the shut-off valve 5 is followed by a flow meter F and further downstream a branch with a relief valve 6.
• Filling hose 4 is configured within the dispenser as a stable tube and outside of the dispenser as a flexible hose and it includes a not shown
• Flow meter F and the expansion valve 6 are to be selected as narrow as possible.
• the filling hose 4 is connected via a refueling coupling with a receiver tank, that is usually connected to a vehicle tank.
• Shut-off valve 5 is opened and gaseous fuel is conducted via the flow meter F into the receiver tank.
• the flow meter F detects the amount of fuel that has been discharged.
• the expansion valve 6 is closed.
• the shut-off valve 5 is closed. Also at the receiver tank, a shut-off valve is closed to prevent leakage of already tanked gas from the tank.
• the temperature and the pressure in the filling hose are determined and thus a density is calculated by means of which the amount of fuel can be calculated.
• the expansion valve 6 is opened. The calculated amount is deducted from the amount determined by the flowmeter. The corrected quantity is billed. This gives both the customer and the operator an accurate value for the fuel being drained.
• FIG. 1 illustrates an alternative embodiment.
• the components are in

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=59626547

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (4)

• 2016
  • 2016-08-09 DE DE102016009674.8A patent/DE102016009674A1/de not_active Withdrawn
• 2017
  • 2017-08-03 JP JP2019507267A patent/JP2019525097A/ja active Pending
  • 2017-08-03 EP EP17752002.0A patent/EP3497363A1/de not_active Withdrawn
  • 2017-08-03 CN CN201780048191.0A patent/CN109563970A/zh not_active Withdrawn
  • 2017-08-03 US US16/323,994 patent/US20190211973A1/en not_active Abandoned
  • 2017-08-03 WO PCT/EP2017/000941 patent/WO2018028824A1/de unknown
  • 2017-08-03 KR KR1020197006945A patent/KR20190038625A/ko unknown

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