A station and method for refilling a tank or tanks with pressurized gas in which liquefied gas is vaporized in a vaporizer. One portion of the vaporized gas is compressed to produce a compressed gas. Another portion of the vaporized gas is not compressed but instead is fed to a heat exchanger where it is used to cool the compressed gas. The thus-warmed gas is reinjected into a filling line that feeds the liquefied gas to the vaporizer.

A filling station for supplying vehicles with gas containing hydrogen comprises: a storage unit comprising high pressure gas containers; a compression unit comprising compressors for increasing the pressure of gas for the storage unit; and a supply unit comprising a supply device for supplying a vehicle; a storage circuit for circulating gas from the compression unit to the storage unit; and a filling circuit for circulating gas from the storage unit to the compression unit. The storage circuit comprises a storage pipe network connecting each compressor to each container and at least one storage distributor for selectively associating the compressors and the containers. The filling circuit includes a filling pipe network connecting each container with each compressor and a filling distributor for selectively associating the containers and the compressors. The station further includes control means for controlling the storage and filling distributors.

The invention relates to a MEGC trailer for transportation and temporary storage of a pressurized gaseous fluid, the MEGC trailer comprising: two gas banks each comprising one or more gas sections and a fluid conduit system. The fluid conduit system comprises a first and a second bank valve between which an additional gas section is connected to the fluid conduit system. Wherein the first and second bank valves are controllable so that the volume of at least one of the two gas banks can be changed with the volume of the additional gas section.

Device and method for filling pressurized-gas tanks, comprising a fluid transfer circuit provided with an upstream end intended to be connected to a source of gas and at least two parallel downstream ends intended to be connected to distinct tanks that are to be filled, the transfer circuit comprising a temperature regulating member for regulating the temperature of the gas transferred from the source towards the downstream ends, the gas temperature regulating member being positioned in the transfer circuit upstream of the at least two downstream ends, which means to say that the gas temperature regulating member is common to the at least two downstream ends, characterized in that the at least two downstream ends of the circuit each comprise a respective control member for controlling the flow rate and/or the pressure of the transferred gas and configured to control the flow rate and/or the pressure in each of the downstream ends independently.

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.

Device and method for filling pressurized gas tanks, comprising a fluid transfer circuit comprising an upstream end provided with a plurality of pressurized fluid sources and a downstream end comprising at least two distribution terminals each intended to be connected to separate tanks to be filled, each source comprising a first fluid outlet connected to a first respective outlet valve, each first outlet valve being connected to each of the at least two distribution terminals via parallel transfer ducts, each of the transfer ducts comprising at least one respective isolation valve, each of the distribution terminals being fluidly connected to each first outlet valve of a source via a first direct fluid path passing through a single transfer duct and via at least one second indirect alternative fluid path successively passing through a plurality of transfer ducts.

Device and method for filling pressurized-gas tanks, comprising a fluid transfer circuit provided with an upstream end intended to be connected to a source of gas and at least two parallel downstream ends intended to be connected to distinct tanks that are to be filled, the transfer circuit comprising a temperature regulating member for regulating the temperature of the gas transferred from the source towards the downstream ends, the gas temperature regulating member being positioned in the transfer circuit upstream of the at least two downstream ends, which means to say that the gas temperature regulating member is common to the at least two downstream ends, characterized in that the at least two downstream ends of the circuit each comprise a respective control member for controlling the flow rate and/or the pressure of the transferred gas and configured to control the flow rate and/or the pressure in each of the downstream ends independently.

Device and method for filling pressurized gas tanks, particularly vehicle pressurized hydrogen tanks, the device comprising a liquefied gas source, a transfer circuit comprising two parallel transfer lines each having an upstream end linked to the liquefied gas source, at least two separate downstream ends intended to be each removably connected to a tank to be filled, each of the two transfer lines comprising: a pump, a vaporizer for evaporating the pumped fluid, a branch for bypassing the vaporizer and a distribution valve(s) set configured to control the flow of fluid pumped and distributed between the vaporizer and the branch line, the device further comprising a storage buffer(s), which storage buffer(s) is(are) connected in parallel to each of the two transfer lines via a set of valves.

A hydrogen filling station control system and method of use, and a hydrogen filling station comprising the system. The system includes: a first compressor, a second compressor, a first storage tank, a detector and a controller, wherein discharge pressure of the first compressor is smaller than a gas storage pressure of the first storage tank, discharge pressure of the second compressor is larger than or equals the gas storage pressure of the first storage tank, the first compressor and the second compressor are connected to the first storage tank, and the detector is configured to detect pressure of the first storage tank. The controller is configured to control the first compressor to inflate and pressurize the first storage tank and control, when the first storage tank equals a first preset pressure, the second compressor to inflate and pressurize the first storage tank. Reduced costs and power consumption can be realized.

When a pressure accumulator tank A3a is used as a low-pressure bank, a controller sends an open control signal to an electromagnetic open/close valve A10a to open the electromagnetic open/close valve A10a so that hydrogen in the pressure accumulator tank A3a can be supplied to a tank to be filled (not shown) of an FCV. In parallel with this, the controller sends an open control signal to a first electromagnetic open/close valve 6a and a second electromagnetic open/close valve 6b to open the first and second electromagnetic open/close valves 6a and 6b so that hydrogen can be supplied also from a compressor 2 to the tank to be filled of the FCV.