A module includes a parallelepiped main body having four lateral faces extending between an upper face and a lower face, in which an inner chamber is provided in the main body, opening in the top and bottom faces in order to receive, on the inside, a distribution or regulation device. The inner chamber includes, consecutively, an upper bore, an intermediate bore that has a smaller diameter than the upper bore, and a lower bore that has a smaller diameter than the intermediate bore. A plate is provided on each lateral face for attachment to a plate of a similar adjacent module, the plate having peripheral holes used for the passage of attachment screws and a central blind hole suitable for guiding a drill hole opening in the upper bore or in the intermediate bore.

A flow direction restriction valve mechanism unit includes a pressure decreasing valve assembly that is located to freely advance or retract in a combination valve cassette attached to an in-outlet secondary side flow path formed on the side of an outlet with respect to an intermediate transmission member in a flow path, and retracts by a pressure of gas; a first coil spring urging the pressure decreasing valve assembly in a retracting direction; a check valve that is located to be freely advance or retract with respect to the pressure decreasing valve assembly, and retracts by a pressure of the gas; and a second coil spring urging the check valve in an advancing direction. A gas induction passage is formed in which the gas flows and acts on the pressure decreasing valve assembly such that the pressure decreasing valve assembly moves in the advancing direction.

A device for filling and withdrawing gas includes a withdrawing circuit provided with a storage connector that can be connected to a storage container and a withdrawing connector that can be connected to a withdrawing device. The device also includes a filling circuit provided with a filling connector that can be connected to a gas source for filling the container. The filling connector includes a piston internally defining a filling duct and having a drain orifice opening transversely into said filling duct. The piston is movable inside a drain body provided with a drain duct connected to a leakage circuit connected to the outside, between an open position wherein the drain orifice does not coincide with the drain duct and a closed position wherein the drain orifice coincides with the drain duct to establish communication between said filling duct and the leakage circuit.

A control device of a gas charging device controls opening/closing of a control valve so that pressure increase rate of gas pressure in a tank when gas charging to the tank increases at a reference increase rate determined in advance. The control device, when gas charge to the tank begins, controls pressure increase rate at a high increase rate higher than the reference increase rate. After the difference between gas pressure in the tank when gas charging is performed at the high increase rate and gas pressure in the tank when the charging is performed at the reference increase rate has reached a predetermined pressure difference, the control device controls the opening/closing of the control valve so that gas charge to the tank is performed at the reference increase rate.

The invention relates to a device for supplying a gaseous fuel to an engine that comprises a gas accumulator for receiving highly pressurized gaseous fuel, a gas buffer for receiving medium pressurized gaseous fuel, a gas supply device for delivering a gaseous fuel into an engine combustion space, a first gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a first valve, a second gas line that connects the gas accumulator to the gas buffer and whose gas flow can be regulated via a second valve, and a third gas line that connects the gas buffer to the gas supply device. The device is further characterized in that a compressor is arranged in the second gas line to increase a pressure of a gaseous fuel flowing from the gas accumulator to the gas buffer.

A gas filling system includes a receiver that receives a temperature in a high pressure container measured by a temperature sensor by communication, and a flow rate control device that controls a flow rate of gas for filling, a pressure sensor that measures a pressure of gas for filling, and a controller. The controller controls the flow rate control device such that the high pressure container is filled with the gas at a preset first pressure rise rate, until a filling rate of the high pressure container reaches a preset first target filling rate, and the high pressure container is filled with the gas at a preset second pressure rise rate lower than the first pressure rise rate, until the filling rate of the high pressure container reaches, from the first target filling rate, a preset second target filling rate higher than the first target filling rate.

A gas supply system for providing high pressure (HP) gas to a low pressure (LP) gas destination, having a primary HP gas unit and a reserve HP gas unit, which provide regulated lower-pressure gas to a supply manifold, and an LP destination regulator that provides an LP regulated gas supply to a consumption subsystem. A one-way flow valve in fluid communication from the primary HP gas unit to the reserve HP gas unit, ensures that the reserve HP gas unit remains substantially full, even after numerous cycles of depletion and replacement of the primary HP gas unit, during which the HP supply is provided by the reserve HP gas unit, which helps to avoid the risk that the reserve tank pressure and supply might mistakenly, unexpectedly or unintentionally be depleted

Disclosed is a liquefied hydrogen filling apparatus configured such that connection between liquefied hydrogen injection lines is performed stepwise, whereby there is no concern of leakage of liquefied hydrogen the moment the liquefied hydrogen injection lines are connected to each other, and therefore it is possible to guarantee safety and to prevent loss of fuel. In addition, the state of connection between the liquefied hydrogen injection lines is securely maintained, whereby there is no concern of separation due to internal pressure at the time of filling or other external force, and therefore it is possible to perform safe filling.

A portable, cryogenic fluid pump apparatus with associated instrumentation, conduit legs and accessories, are optimally configured on a modular supporting platform for plug and play installation at a filling station and on-site inspection and maintenance at the filling station. Each of the associated instrumentation, conduit legs and accessories are positioned onto a condensed footprint such that access to the platform is possible. The plug and play connection system allows for the rapid connection or disconnection of the various instrumentation, conduit legs and accessories on the modular supporting platform to a vaporizer and a source tank at a filling station. The connections or disconnections may be made safely, quickly and, easily in advance.

A method for controlling a compression system that includes a compressor for compressing gas, a first on-off valve provided on a suction flow passage connected to a suction side of the compressor, a pressure reducing valve provided on a portion of the suction flow passage upstream of the first on-off valve, a second on-off valve provided on a discharge flow passage connected to a discharge side of the compressor, a bypass flow passage connecting the suction flow passage and the discharge flow passage to detour the compressor, and a bypass valve provided on the bypass flow passage, includes closing the first on-off valve while driving the compressor, opening the bypass valve simultaneously with or after the closing of the first on-off valve, closing the second on-off valve after the opening of the bypass valve, and continuing to drive the compressor after the closing of the second on-off valve.