A system to convert and dispense pressurized gas(es) of cryogenic liquids of gas(es), and systems and methods to efficiently convert liquid natural gas (LNG) to compressed natural gas (CNG) and low pressure natural gas (NG) and other cryogenic liquids of gas. The system requires one dedicated pressure vessel of horizontal and vertical elements at the dispensing location to convert, retain, store, and dispense multiple pressures of gas from a cryogenic liquid supply such as a non-dedicated high pressure cryogenic personal supply tank. The system efficiently modifies and controls parameters of volume, pressure, and temperature in conversion scale to retain all converted product under human control to dispense without process required waste for use in commercial, industrial, and in particular single family residential applications and service can be accomplished by pickup truck and trailer, where semi trucks, big rig trucks and process pollution are not welcome.

A pressure vessel having an inner container made of thermoplastic plastic, and at least one metal part embedded in the inner container. A collar that includes the metal part is formed on the inner container, the collar being configured such that it is gas-tight with respect to the metal part.

A base for a pressurized gas tank, such as hydrogen, is substantially circular about an axis, and comprises a substantially cylindrical pipe of axis, which passes through the base in order to connect an outside of the tank to an inside of the tank. A substantially tubular notch of axis is arranged on an inner side of the tank and is suitable for receiving a sealing envelope. A substantially tubular sleeve of axis is arranged on the inner side of the tank and has an inner diameter substantially equal to a diameter of the pipe and an outer diameter substantially equal to an inner diameter of the notch, and also has an axial extension at least equal to that of the notch. An O-ring and a groove of axis, capable of receiving the O-ring, are arranged in a side wall of the notch. The base also comprises a body and a substantially tubular ring of axis, interfaced by a surface of revolution about the axis passing through the groove.

The present invention provides the composite material layer forming method of composite material container: wrap a continuous fiber around the surface of inner tank at a predetermined angle to form at least a layer of composite material, and tile an additive between composite material layers and/or inner surface and/or outer surface to prevent cracking along a fiber direction of the composite material layer.

The present invention relates to a hydrogen supply device of a fuel cell vehicle and a method of controlling same, the device comprising: container valves which are respectively mounted to a plurality of hydrogen containers and supply and block hydrogen; a manifold which is connected to the plurality of hydrogen containers by a supply pipe; a regulator which is connected to the manifold, and supplies the high-pressure hydrogen at a reduced pressure required for a fuel cell; a supply valve which is installed on the supply pipe between the manifold and the regulator, and regulates hydrogen supply; a pressure sensor which senses the pressure of the manifold; and a control unit which supplies hydrogen by actuating the container valves and the supply valve after performing an initial operation sequence when a start-on signal is input from a peripheral control device.

A system for loading and storing CNG onboard of a ship and for unloading it therefrom comprises CNG loading facilities for loading CNG on board of the ship, CNG storage facilities for storing the loaded CNG on board of the ship at nominal storage pressure and temperature, and CNG unloading facilities for unloading CNG to a delivery point. The delivery point requires the unloaded CNG to be at delivery pressure and temperature generally different from the storage pressure and temperature. Thus, the CNG unloading facilities comprise a CNG heater for heating the to-be-unloaded CNG prior to unloading, and a lamination valve for allowing the to-be-unloaded CNG to expand from its storage pressure to the delivery pressure. A compressor may also be provided to compress CNG that would not otherwise be spontaneously delivered.

A gas container includes a tubular container main body formed by a plurality of pieces which include a first dome piece and a second dome piece and are disposed separately in an axial direction, the tubular container main body having an internal space configured to store a gas, a first mouthpiece attached to the first dome piece, a second mouthpiece attached to the second dome piece, a storage member configured to store and release a gas, and a tubular accommodation member disposed in the internal space and having an accommodation space accommodating the storage member. A method for assembling a gas container includes a first step of assembling and fixing the accommodation member to the first mouthpiece attached to the first dome piece, and temporarily assembling the accommodation member to the second mouthpiece attached to the second dome piece, and a second step of connecting the pieces to each other.

A pressure vessel system (21) for a motor vehicle, comprising at least two pressure vessels (19), each of which delimits an interior space (27), for filling with a fluid as fuel, a pressure sensor (32) for detecting the pressure in the pressure vessel system (21), and a computer unit (36) for determining a leak in the pressure vessel system (21) using the data detected by the pressure sensor (32), the pressure vessel system (21) comprising at least two pressure sensors for detecting the pressure of the fluid in at least two different pressure detection spaces (31) in the pressure vessel system (21), so that the pressure in each pressure detection space (31) can be detected by a pressure sensor (32) and, depending on the pressure data of the fluid in the at least two different pressure detection spaces (31) which can be detected by the at least two pressure sensors (32), a leak can be detected in the pressure vessel system (21), in particular in a pressure detection space (31).

Apparatus and method of storing useful gas comprising respective sources of a gas and a liquid. a sealed storage container. gas inlet and outlet means of the storage container, liquid inlet and outlet means of the storage container, and control means including a pressure monitoring device to maintain a substantially constant pressure in the storage container by control of the amount of the gas and liquid being transferred to and withdrawn from the storage container by way of the respective inlet and outlet means, wherein the gas and the liquid are immiscible so that the gas fills a space in the storage container over the liquid surface.