Device for filling tanks with pressurized gas, in particular hydrogen gas tanks of motor vehicles, the device comprising at least one gas source, a transfer circuit comprising at least one upstream end connected to the source and at least one downstream end intended to be connected in removable fashion to a tank to be filled, the transfer circuit additionally comprising, between its upstream and downstream ends, a set of buffer storage container(s) which is (are) connected in parallel to the transfer circuit via a set of respective connecting valve(s), the transfer circuit comprising a portion of pipe(s) forming a loop, a plurality of the buffer storage container(s) being connected in parallel to the said loop, characterized in that the transfer circuit comprises a plurality of separate downstream ends each intended to be connected in removable fashion to a respective tank to be filled, the said downstream ends being connected in parallel to the said loop and comprising a set of respective linking valves, so that control of the connecting valves and of the linking valves makes it possible to bring at least one first buffer storage container into fluidic communication, via the loop, with a first downstream end and, simultaneously, to bring at least one second buffer storage container into fluidic communication, via the loop, with a second downstream end and/or to bring two separate buffer storage containers into fluidic communication.

Disclosed is a valve device for a high-pressure gas storage tank. A valve device for a high-pressure gas storage tank according to the present disclosure includes a plurality of gas storage tanks having nozzle parts through which a gas is discharged, a block fixing part that accommodates the plurality of nozzle parts and has a gas flow path part, through which the gas discharged from the nozzle parts flows, in an internal space thereof, and an opening/closing part that is connected to the block fixing part and adjusts external discharge of the gas discharged from the nozzle parts and flowing to the gas flow path part.

A mount is configured for attachment to a neck of a pressure vessel that has a body having a height and width. The mount includes a central plate, and first and second flanges. The central plate has a height and width, both of which are approximately equal to or less than the respective height and width of the pressure vessel body, and an aperture. The first and second flanges are located at opposed first and second sides of the central plate, respectively, are oriented substantially perpendicular to the central plate, and are configured to extend toward the body. The central plate has a cut-out portion that borders at least one of the first and second flanges.

The invention relates to a valve device (100) for a gaseous medium, in particular hydrogen, comprising a valve housing (6) which comprises a closing element (14) that is arranged therein and can be moved in the longitudinal axis (18). The closing element (14) interacts with a seal seat (16) in order to release and close a through-opening (22). The valve housing (6) is equipped with at least one spring element (8) which is supported against the closing element (14) and the valve housing (6). Furthermore, the at least one spring element (8) is made of a bimetal.

A pressure vessel mounting structure includes: a manifold including a discharge gas passage branching from a general passage via which a container body communicates with a valve; a fusible plug valve configured to close the discharge gas passage and to, when the fusible plug valve is melted, open the discharge gas passage such that the high-pressure gas is discharged; a case including a bottom face portion covering the container body and the manifold from below in the vehicle up-down direction, the case including a bead placed near the fusible plug valve, the bead being formed by protruding a part of the bottom face portion upward in the vehicle up-down direction; and a communicating opening via which a space under a floor of a vehicle communicates with the fusible plug valve, the communicating opening being formed in a part of the bead, the part facing the fusible plug valve.

The invention relates to a method for opening a valve assembly for a fuel tank, comprising a pilot valve (V.sub.1) and at least one additional valve (V.sub.2), in particular for use in a fuel cell-operated vehicle, having the steps of applying (30) an amplification voltage (S.sub.1) in order to open the pilot valve (V.sub.1) in an opening phase (P.sub.1) of the pilot valve (V.sub.1), deactivating (32) the amplification voltage (S1) in order to terminate the opening phase (P.sub.1) of the pilot valve (V.sub.1), applying (34) a pull-in voltage (S.sub.2) in a pull-in phase (P.sub.2) of the pilot valve (V.sub.1) in order to hold the pilot valve (V.sub.1) open, and activating and deactivating (36) the pull-in voltage (S.sub.2) in an alternating manner in order to hold the pilot valve (V.sub.1) open and in order to open the at least one other value (V.sub.2) and hold same open in a readjustment phase (P.sub.3) such that the hold-open energy required on average for holding the pilot valve (v.sub.1) open and the opening energy and/or hold-open energy required on average for the at least one other valve (V.sub.2) is provided.

Systems and methods for storing materials, such as cryogenic materials, with inner and outer vessels of a storage tank that mutually support each other. An inner vessel may also have a webbing, such as a rope lattice, that provides additional support for the storage tank.

A multilayer structure for transporting, distributing and storing hydrogen including, from the inside to the outside, a sealing layer and at least one composite reinforcement layer, the sealing layer including from the inside to the outside: a layer of a composition including: a short-chain polyamide thermoplastic polymer, more than 15% and up to 50% by weight of impact modifier, or including: a semi-crystalline long-chain polyamide thermoplastic polymer, up to 50% by weight of impact modifier, up to 3% by weight of plasticizer; a hydrogen barrier layer; a layer of a composition including: a short-chain polyamide thermoplastic polymer, more than 15% and up to 50% by weight of impact modifier, or including: a semi-crystalline long-chain polyamide thermoplastic polymer, up to 50% by weight of impact modifier, up to 3% of weight of plasticizer, the innermost composite reinforcement layer being wound around the sealing layer.

A management system includes a position detection unit which obtains a position of a work machine, a posture detection unit which obtains a posture of the work machine, an object detection unit which obtains a three-dimensional shape of a buried object, a position calculation unit which obtains a position of the buried object by using the position of the work machine obtained by the position detection unit, the posture of the work machine obtained by the posture detection unit, and the three-dimensional shape of the buried object obtained by the object detection unit, and an information acquisition unit which acquires buried object information including at least the position of the buried object obtained by the position calculation unit.

A gas filling apparatus with excellent filling efficiency through a downsized gas pipe cooling section. A gas filling apparatus 1 of the present disclosure includes; a main unit 2 having a filling mechanism for transporting a gas from a gas supply source through a primary pipe 71 while measuring a flow rate of the gas and a gas pipe cooling section 41 for cooling a gas pipe in which a gas from the filling mechanism is introduced; and a hose unit 3 having a filling hose 34 connected to a secondary pipe 72 lead from the gas pipe cooling section and a gas filling nozzle attached to an end of the filling hose, wherein the gas pipe cooling section is made of copper alloy. The pipe cooling section can be disposed at a connecting portion between the secondary pipe and the filling hose, and plurality of the filling mechanisms can be mounted, and to each filling mechanism is independently mounted the gas pipe cooling section. The gas pipe cooling section can be accommodated in a vessel 42 with vacuum insulation structure, and to the vessel is connected a pipe 44 for communicating a vacuum portion 42a of the vessel with a diffusion pipe through a safety valve 43.