System and method for filling a vessel with a gas or a gas mixture

Abstract

In a process to charge an airbag cartridge with a precisely-defined quantity of gas, the gas is introduced into the cartridge under thermal contact with a heat exchanger at a temperature which is lower than the boiling point, but higher than the freezing temperature. The temperature within the container is lower than that of the dosing container.

Description

technical field [0001] The invention relates to a method and a device for filling containers with a filling gas or a filling gas mixture. Background technique [0002] In order to be able to store gases with high storage densities, the storage takes place under high pressure either in the liquid state or in the gaseous state. Although storage in the liquid state achieves extremely high storage densities, it is only possible with more or less high evaporation losses, which are unavoidable even in well-insulated containers. For the pressure storage of gases, mainly air compressors are currently used, which allow operating pressures of approximately 200 to 300 bar in the pressure vessel. However, these air compressors are very complex in construction and operation, and new applications, for example in fuel cell technology or in gas generators for airbags, require much higher pressures of 700 bar or more. Such pressures cannot be achieved or can only be achieved with great exp...

AI Technical Summary

Problems solved by technology

[0004] But in the process of filling with liquefied gas, the following problem arises, that the operation of filling gas in the state of boiling point is very difficult

In particular, the exact determination of the filled fuel quantity and thus the exact calibration of the mixing ratios of the individual gas components in the filled container is hardly possible in the case of filling gas mixtures

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