Process and arrangement for filling a high pressure gas container with liquefied gas under hydrostatic pressure

Abstract

The invention concerns a process, an arrangement and a device for filling a high pressure gas container (1) with liquefied gas, comprising the following steps connecting the gas container to a metering valve (17) and connecting the metering valve (17) to a first container (21) containing liquefied gas, wherein the first container (21) is positions above the gas container (1) at a geodetic height (H); opening the metering valve (17) and admitting the quantity of liquefied gas is supplied with the first container (21) into the gas container (1) at a hydrostatic pressure that corresponds to the geodetic height (H); closing the metering valve (17). As the hydrostatic pressure may be tightly controlled, the high pressure gas container (1) may be efficiently, reproducible, reliable and economically filled at a particularly high metering precision.

Description

Technical field [0001] The invention relates to a method, device and equipment for filling a high-pressure gas container with liquefied gas. Background technique [0002] For cold-filled pressure vessels, according to DE 10107895, the filling gas is cooled before being introduced into the pressure vessel, wherein the pressure vessel is sealed in a pressure-tight manner when the filling process is completed. When the gas is heated, the pressure in the pressure vessel rises rapidly. [0003] According to DE 19817324, a light-weight tank made of chrome-nickel steel liner inside a fiber-reinforced shell is filled with fuel gas, in which the fuel is introduced in the form of a cryogenic liquid and stored at a pressure higher than 300 bar. [0004] According to WO 2005 / 043033, a pressure vessel such as an airbag system is filled with a gas or gas mixture at a temperature higher than its boiling point, the cold vessel is closed, and the vessel is heated to ambient temperature before bei...

AI Technical Summary

Problems solved by technology

[0019] However, the known methods are complex, expensive and difficult to implement industrially on a large scale, especially with high productivity

[0020] If the filling of the gas container takes place at ambient temperature, the filling method is complicated by the high pressures involved which may be higher than 300 bar (even) up to 1300 bar

[0021] If the filling of gas containers is performed at low temperatures to avoid handling such high pressures, the precise metering of liquefied gases is complicated by the need to perform metering methods at cryogenic temperatures down to 100°K or lower

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