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Gastight container

a technology for transport containers and gastight containers, applied in the direction of containers, rigid containers, gas/liquid distribution and storage, etc., can solve the problems of double-walled steel cylinders, high labor intensity, and inconvenient storage of contents, so as to achieve the effect of avoiding the effect of double-walled pressure vessels and vacuum between the two walls

Inactive Publication Date: 2004-08-05
MOSER EVA MARIA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0061] Finally, the recycling suitability of the plastic container represents a further advantage of the invention. The diffusion barrier layer can be removed, can consist of an equivalent material to that of the container or has such a low mass fraction that it is negligible in recycling.
. The diffusion barrier layer can be removed, can consist of an equivalent material to that of the container or has such a low mass fraction that it is negligible in recycling.

Problems solved by technology

Thick-walled metal cylinders made of steel nevertheless have the disadvantage that they are extremely heavy in comparison with their stored contents.
Such a double-wall in a pressure vessel with a vacuum between the two walls would be not only pointless but also counterproductive.

Method used

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Examples

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example

[0034] A plasma coating as a pre-treatment is carried out with a mixture of equal parts of: Ar, C.sub.2H.sub.2, N.sub.2 and CO.sub.2. This gives a surface tension of >60 mN / m.

[0035] An apolar diffusion barrier layer, i.e. having a barrier effect, can also be applied directly i.e. without pre-treatment by means of plasma polymerisation, for example as an 0.01 to 1 .mu.m thick amorphous DLC hydrocarbon layer (diamond like carbon). This is constructed on the basis of carbon and hydrogen, has a 20 to 80 at % content of the two elements and respectively 0.01 to 6 at % of at least one element of the group comprising oxygen, nitrogen, fluorine, chlorine, bromine, boron and silicon. In this connection reference is made to WO 00 / 32938 (table, item E).

[0036] Following the pre-treatment described above, an actual diffusion barrier layer e.g. a metallic, organic metal-containing and / or ceramic layer is deposited. In the sense of the present invention, the metallic layers also include boron and ...

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Abstract

The invention relates to a gastight, pressure-resistant storage and / or transport container (10) for low-molecular, reactive filling media, especially for hydrogen, oxygen, air, methane and / or methanol. Said container has a high filling pressure and is embodied in an essentially rotationally symmetric manner, having at least one connector cap (15) with a sealing device (16). The wall (12) of the container is essentially comprised of a thermoplastic synthetic material having at least one diffusion barrier (18, 19) system and / or a diffusion barrier and anti-corrosion system (18, 19). In order to offer protection for hydrogen and oxygen containers, the diffusion barrier system can be embodied in the form of at least one compact layer and / or can contain finely dispersed, distributed reactive nanoparticles (18) in the wall (12) of the container, in at least one composite film (28) and / or in at least one diffusion barrier layer (18).

Description

BACKGROUND OF THE INVENTION[0001] (a) Field of the Invention[0002] The invention relates to a gastight, pressure-resistant storage and / or transport container for low-molecular-weight reactive filling media, especially hydrogen, oxygen, air, methane and / or methanol, with a high filling pressure, which container is substantially rotationally symmetrical and has at least one connection cap with a sealing device.[0003] (b) Prior Art[0004] It has been usual for some time to fill, store and / or transport low-molecular-weight reactive media, especially gases such as hydrogen, oxygen and air, in thick-walled metal cylinders fitted with a safety sealing cap. In this way, large quantities of gas can be concentrated in the smallest possible space, stored free from leakage for long periods and transported safely. A pressure reducing valve is fitted on the sealing cap of a metal cylinder only immediately before use.[0005] Thick-walled metal cylinders made of steel nevertheless have the disadvanta...

Claims

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Application Information

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IPC IPC(8): F17C1/10F17C1/16
CPCF17C1/10Y02E60/321F17C2201/0109F17C2201/056F17C2203/012F17C2203/0604F17C2203/0607F17C2203/0619F17C2203/0621F17C2203/0624F17C2203/0636F17C2203/0639F17C2203/0646F17C2203/0648F17C2203/0656F17C2203/066F17C2203/0663F17C2203/067F17C2203/0673F17C2205/0305F17C2205/0397F17C2209/2154F17C2209/2172F17C2209/221F17C2209/224F17C2209/225F17C2209/227F17C2209/228F17C2209/232F17C2221/011F17C2221/012F17C2221/031F17C2221/033F17C2223/0123F17C2223/035F17C2223/036F17C2260/036F17C2260/037F17C2260/053F17C2270/0168F17C2270/0189F17C2270/079F17C1/16Y02E60/32
Inventor MOSER, EVA MARIARELLER, ARMIN
Owner MOSER EVA MARIA
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