Receptacles – High-pressure-gas tank – Multilayer container
Patent
1998-01-27
1999-07-06
Moy, Joseph M.
Receptacles
High-pressure-gas tank
Multilayer container
220 6219, B60P 322, B65D 9002
Patent
active
059187590
DESCRIPTION:
BRIEF SUMMARY
AREA OF APPLICATION
The tank or silo container described here can be used in any situations that call for a container of this kind which offers greater stability, especially under thermic stress, and equivalent or lower weight than other containers constructed according to current techical standards.
The invention relates to tank or silo containers, especially for vehicles designed to carry liquid goods or goods capable of flowing, the lengthways main part of which has a circular, elliptical or other appropriate cross-section. The main part will be limited at both ends by walls spherical, hemispherical, or flat in shape, and the containers in question will have a receptacle formed by the main part and the wall sections together with stationary support and pumping hatches. Both the main part and the wall sections, and also the stationary support and pumping hatches if need be, will be made of fibre-reinforced plastics.
Current Technical Standards
Construction components have hitherto been manufactured from glass fibre- or carbon fibre-reinforced plastics for use in air, water and land vehicles. These components, which can be prefabricated as either surface or load-bearing components, are lightweight, have a fairly simple construction and are well-suited to series production.
Thus the use of construction components of this kind enables the manufacture of lightweight vehicle bodies that are able to accomodate heavy loads and withstand considerable stress.
Tank or silo containers for vehicles are manufactured from malleable alloys or steel, and here the thickness of the metal is fairly constant. This means that it is not possible to optimize the stability or load-bearing properties on a local basis. Moreover, containers of this kind have their own unladen weight, which reduces the payload.
For these reasons, tank or silo containers are also manufactured from glass fibre- or carbon fibre-reinforced plastics.
There are containers whose walls, stationary support and pumping hatches are made of fibre-reinforced plastics.
Here, the elements are made of plastic which is reinforced preferably with glass fibres, or, in order to achieve greater stability, with carbon fibres.
The construction consists of an inner layer with built-in fibres, an intermediate layer that is superimposed on the inner layer, and an outer layer superimposed on the intermediate layer which likewise contains built-in fibres: these can be either glass fibres or carbon fibres.
As a rule, the reinforcing fibres are chopped up before they are incorporated in the plastic; in exceptional cases, though, complete fibres or mats are used to form specific construction components, these being arranged in relation to the component concerned.
However, it has been shown that such fibre-reinforced containers tend to be defective, especially when subjected to thermic stress.
Purpose, Solution, Advantages
Thus it is the purpose of the invention to create a tank or silo container of this kind which offers greater stability, especially under thermic stress, and equivalent or lower weight than other containers constructed according to current techical standards.
This purpose is fulfilled by the features described in patent claim 1. The terms of the invention are to create a tank or silo container of this kind where the reinforcing fibres of an `endless` thread are wound in a spiral at least around the main part and then embedded in the plastic.
Depending on their geometric shape, the wall sections should also preferably incorporate embedded threads wound in a spiral.
The threads consist of glass fibres and/or carbon fibres; if a mixture of both fibres is used, the ratio will be determined by the mechanical requirements.
Threads can also be combined to form cords, and the fibres can likewise be wound in several layers in order to produce any required wall thickness.
For the carbon fibres, materials will be used that are produced from various different fibre-forming organic substances such as cellulose, PAN, PF resins and the like; these materials must be inco
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"Tanklastzug mit Auflieger aus GFK geht in die Erprobung" in TU 20(1979), No. 4 Apr.
Beckmann Jan-Dirk
Feldbinder Otto
Apparate-und Chemieanlagenbau GmbH
Moy Joseph M.
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