The present invention provides a leak-proof fluid dispensing system with pressure sensor and pre-set and fixed dispensing pressure reducing regulator including a gas cylinder having a containing space, a pressure sensor and a dispensing control valve. The dispensing control valve having internal channels that communicate with an inlet port, an outlet port, a bottle port, a pressure sensor and a joint portion so that the bottle port is communicated with the containing cylinder space.

The leak-proof fluid dispensing system includes an inlet valve connected to the inlet port and the internal channel, an outlet valve connected to the outlet port and the internal channel, a pressure dispensing reducing regulator connected to the outlet port and the bottle port through the internal channel and preset and fixed with an opening pressure value. When the actual pressure at the outlet end of the pressure dispensing regulator is lower than or equal to the opening pressure value, then the pressure dispensing regulator is being opened. A pressure sensor disposed on the dispensing body and having pressure sensitively is connected to the internal channel and the bottle port.

With the implementation of the present invention, it may prevent accidental leakage of fluid in the gas cylinder and dynamically monitor the flow gas capacity in the gas cylinder.

A multi-walled storage tanks use pressure differences between walls/shells to maximize fluid mass storage for tank size by reducing or minimizing the distance between the outer most layers of a multi-layer storage device, and keeping the middle one(s), particularly the innermost space, as large as possible, while having shell walls of substantially the same material and thickness, with no wall being thicker than the inner shell wall.

A multifunction valve for a flange of a high pressure hydrogen tank for a fuel cell automotive system having a one-piece ejector body applicable to a head surface of a valve body is provided.

The invention relates to a pressure vessel comprising: a vessel body, wherein, at an upper end of the vessel body, an end section is integrally formed with the vessel body, which has an opening, and a valve arranged in the end section. At least two outflow openings are formed in the wall surrounding the opening of the end region below the opening, which are in particular arranged opposite one another. In an outflow position of the valve, the outflow openings are fluidically connected via the valve to a body interior of the vessel body and the opening of the end region is closed in a media-tight manner, and, in a filling position of the valve, the opening of the end region is fluidically connected to the body interior of the vessel body via the valve. Furthermore, the invention relates to a method for filling the pressure vessel.

An integrated cryogenic fluid delivery system includes a cryogenic liquid tank having an interior, a wall and a geometry. The interior of the cryogenic liquid tank contains a supply of cryogenic liquid. A fuel pickup line is positioned within the interior of the tank and is in fluid communication with a vaporizer so that the vaporizer receives and vaporizes cryogenic liquid from the tank. The vaporizer is positioned outside of the tank and is secured to the wall. The vaporizer also has a shape that conforms with the geometry of the tank.

A hydrogen gas storage tank includes a body including a steel bulk region and a passivating metal oxide layer adjacent to the steel bulk region, the oxide layer comprising a number of metal oxide molecules, all having a morphology, wherein at least about 51 wt. % of the number of metal oxide molecules are Fe.sub.2O.sub.3 molecules having morphologies of (012), (001), and/or (110) surface facets such that the oxide layer is configured to lower hydrogen adsorption into the steel bulk region by at least 25% compared to a steel bulk region free from the passivating metal oxide layer.

A gas storage and dispensing vessel, including a vessel container definishing a gas storage interior volume, and a valve head regulator assembly secured to the vessel container, the valve head regulator assembly including a single gas pressure regulator disposed in the interior volume of the vessel container, and a valve head including a pneumatic flow control valve, wherein the single regulator is configured with a set point pressure of at least 0.5 MPa, and wherein the interior volume of the vessel container is at least 5 L.

A pressure vessel refuelling system enables fast fill refuelling of CNG fuel tanks by inducing a stratification of gas temperatures inside a tank during refuelling, then re-cycling a portion of the relatively warmer gas out of the tank during refuelling and back to a gas chiller. The system includes a pressure vessel having a lower end, a first gas port and a second gas port, wherein the second gas port is positioned above the lower end of the pressure vessel; and a cooling circuit connecting the first gas port with the second gas port; whereby gas flowing from an interior cavity of the pressure vessel through the second gas port is cooled in the cooling circuit before returning to the pressure vessel through the first gas port; and whereby a temperature of gas inside the pressure vessel varies from a first temperature at a level of the lower end of the pressure vessel to a second temperature, which is higher than the first temperature, at a level of the second gas port.

The invention relates to a tank device (1) for a gaseous medium, comprising a valve device (2) and a tank (10), wherein the valve device (2) has a valve housing (20) with a longitudinal axis (11). The valve housing (20) is equipped with an inner chamber (7), in which a main valve element (16) is arranged in a movable manner along the longitudinal axis (11), said main valve element (16) interacting with a first valve seat (40) and thus forming a main valve (43). An actuation valve element (18) which can be moved along the longitudinal axis (11) is arranged coaxially to the main valve element (16), said actuation valve element (18) interacting with a second valve seat (41) in order to open and close an inlet opening (160) and thus forming an actuation valve (44). The valve device (2) additionally comprises a magnet coil (14). Furthermore, the inlet opening (28) is arranged in the valve housing (20) coaxially to an outlet opening (30), whereby the gaseous medium can flow against the valve device (2) or a away therefrom axially to the longitudinal axis (11), and the magnet coil (14) is arranged in the valve housing (20) and surrounds the main valve element (16) and the actuation valve element (18).

The present disclosure provides systems and methods for refilling fluid containers. A fluid container may include a bottle and a valve assembly. The valve assembly may include two valves and be configured to engage with the bottle and a filling head or dispensing head. A system is configured to provide pressurized fluid to the refillable container, monitor filling, determine when to stop filling, and determine how much fluid was provided. The valve assembly may include a float mechanism coupled to one of the valves of the valve assembly to ensure fluid flow is stopped when the fluid container is full. The fluid, which can include carbon dioxide, is stored in a storage tank. A flow system provides the fluid to a filling head, which engages with the fluid container. The flow system includes a transfer pump, valves, and sensors configured to provide the fluid to the filling head.