The invention relates to a tank for storing a cryogenic mixture of liquid and gas, comprising a first casing, a draw-off pipe for drawing off fluid, which has an upstream end connected to said first casing, a filling circuit comprising a first filling pipe with an upstream end to be connected to a fluid source and a downstream end connected to the lower portion of the first casing, said filling circuit comprising a second filling pipe connected to the fluid source and a downstream end connected to the upper portion of the first casing, wherein the upstream ends of said first and second filling pipes are designed to be connected to the same fluid source simultaneously, and a distribution valve assembly which is configured to allow distribution of the fluid in said filling pipes, wherein the tank comprises a sensor assembly which measures the pressure in the first casing, said distribution valve assembly being configured to automatically adjust the pressure in the first casing, during filling, to a predetermined pressure setpoint (Pc) by means of the automatic distribution of the flow rate of fluid from the source in the filling pipes, depending on the pressure setpoint (Pc) and the pressure measured by the sensor assembly.

A method for operating a valve of a pressure vessel system includes determining an actual pressure difference between an inlet pressure at an inlet of the valve and an outlet pressure at an outlet of the valve, and enabling the valve if the actual pressure difference is lower than or equal to a maximum admissible pressure difference of the valve.

An inspection apparatus A for a hydrogen gas dispenser includes a receiving-side gas flowing unit 1 including a receptacle 11 configured to be connected to a nozzle C1 of a hydrogen gas dispenser C and an inspection unit including a rate-of-pressure-rise inspection unit 2 configured to measure a rate of pressure rise of hydrogen gas from the hydrogen gas dispenser C and a dispensed-amount inspection unit 3 configured to measure a dispensed amount of the hydrogen gas. The inspection apparatus A for a hydrogen gas dispenser is capable of measuring a dispensed amount and a rate of pressure rise of the hydrogen gas dispenser.

To provide a hydrogen filling system and a hydrogen filling method capable of preventing hydrogen from being filled at high filling rate in the same manner as the communication filling despite a condition that pressure, temperature and so on in the in-vehicle tank are not precisely grasped. The hydrogen filling system (100) of the present invention includes a control unit (CU1, CU2, CU3) for controlling hydrogen filling, wherein the control unit has a function of judging whether or not there is an abnormality in pressure or temperature data in an in-vehicle tank (IT) at communication filling and a function of stopping the communication filling and converting to non-communication filling when there is an abnormality in the pressure or the temperature data.

A fuel delivery and storage system is provided. A further aspect employs a remote central controller and/or software instructions which receive sensor data from stationary and bulk fuel storage tanks, portable distribution tanks, and end use tanks. Another aspect of the present system senses and transmits tank or hydrogen fuel characteristics including temperature, pressure, filled volume, contaminants, refilling cycle life and environmental hazards. Still another aspect includes a group of hydrogen fuel tanks which is pre-assembled with sensor, valve, microprocessor and transmitter components, at least some of which are within an insulator.

To provide a gas filling method in which it is possible to estimate a volume of a tank with high accuracy even when the tank has a small volume. A hydrogen filling system includes a hydrogen station having a pressure accumulator of compressed hydrogen gas, a vehicle having a hydrogen tank, a connection tube system that connects the accumulator and the tank, and a flow rate sensor and a station pressure sensor provided on the connection tube system. A hydrogen gas filling method is a method of filling the tank with the hydrogen gas from the pressure accumulator and includes estimating a volume of the hydrogen tank based on detection values of the flow rate sensor and the station pressure sensor and a volume value of the connection tube system, after a start of filling of the hydrogen tank with the hydrogen gas from the pressure accumulator.

Pressurized gas tanks are filled from at least one gas source using a transfer circuit, a set of buffer storage tanks and at least one compressor. The set of buffer storage tanks may be filled with pressurized gas from the at least one gas source by pressure balancing via balancing lines without going through the at least one compressor. The set of buffer storage tanks may also be filled with pressurized gas from the at least one gas source that is compressed by the at least one compressor.

The invention relates to a tank for storing a two-phase cryogenic mixture of liquid and gas, comprising a first casing, at least one drawing pipe, a tank filling circuit, the tank comprising a sensor assembly measuring the pressure in the first casing, the tank comprising a pipe for pressurizing the internal casing, comprising an upstream end connected to the lower end of the first casing and a downstream end connected to the upper part of the first casing, the pressurization line comprising at least one regulating valve and a heater, in particular a vaporization heat exchanger. The invention is characterized in that the regulating valve is configured to automatically maintain the pressure in the first casing at a minimum value by ensuring, when the pressure in the first casing is lower than said first value, a circulation of liquid taken from the first casing in the heater and a re-injection of said heated fluid into the first casing.

Cryogenic fluid storage tank comprising a pipe for drawing off vaporized gas, which pipe is connected to a first casing and comprises a vaporizer and at least one control valve, a first filling pipe connected to the lower portion of the first casing, a second pipe for filling a downstream end connected to the upper portion of the first casing, a distribution valve assembly configured to enable distribution of the fluid from the fluid source in the filling pipes, a pressurization pipe connected to the lower end of the first casing and a second end connected to the upper portion of the first casing and at least one control valve and a heater, the tank further comprising an air vent regulator, the valve assembly for distribution in the filling circuit, the valve for controlling the pressurization pipe, the valve for controlling the drawing-off circuit and the air vent regulator being integrated into the same valve module, which shares at least one valve element.

A refuelling device for supplying liquefied gas is provided, including a feed system adapted to place each reservoir in fluidic through connection with a tank and including withdrawal ducts for withdrawing the liquefied gas from the reservoirs; an inlet duct for introducing the liquefied gas into the tank; a collection manifold for conveying the withdrawal ducts into the inlet duct; a pump adapted to move the liquefied gas in the feed system; and a pressure gauge to measure the inlet pressure of the liquefied gas in the pump; and a valve adapted to regulate the flow in the inlet duct according to the inlet pressure.