DE1551602A1 - Double-walled container for cryogenic, liquefied gases - Google Patents

Description

MESSER GRIESHEIM GMBH MQ 355

Password: Double-walled container EM 132

Inventor: Dipl.-Ing. H. Wagner

The invention relates to a double-walled transport or Storage containers of small to medium size for cryogenic, liquefied Gases.

In the case of such double-walled containers, two requirements that contradict one another must be met. On the one hand, the heat transfer should be through direct heat conduction between the cold inner container and the one below ambient temperature standing outer container should be as small as possible. On the other hand, the inner container should be on the outer container be so securely attached that under the accelerations occurring especially during transport in the suspension means no inadmissibly high voltages arise.

To solve this task, there are different constructions known. For large containers, e.g. B. railroad cars, or on ships, the suspension and support is done by means of ropes, tie rods, articulated rods and slide rails. It is obvious that such constructions are too cumbersome and expensive for medium-sized and smaller containers. A construction is known for smaller containers (German Patent No. 495.022), in which a larger number of chains are used as suspension means. Around To reduce heat conduction, the chain links have a special shape and are provided with special insulating pieces. This construction is heavy and expensive, and assembly is difficult.

Q 0 98 1 2/05 * 5

- 2 -. EM 132

UG 355

In the case of very small containers with a capacity of only a few hundred liters, a pipe running through the longitudinal axis of the container was used as a suspension means. This construction is light and easy to assemble, but it has a high thermal conductivity.

The invention is based on the object of a double-walled transport or storage container smaller to Bittlerer To create size for cryogenic, liquefied gases that is easy to manufacture and assemble, light in weight, mechanically robust and has good thermal insulation.

* According to the invention, a container of the type mentioned is so designed so that tensioning straps are used as suspension means, which are stretched from the middle of the two inner container bottoms to the outer container. A particularly low heat conduction from the outer container via the tensioning straps to the inner container results when a spacer is attached to the middle of the inner container bottom to which the tensioning straps are attached llan can, for example, weld on a box for this purpose. The straps are then at no point with the Inner container in direct contact. In a very simple way it can be achieved that almost as a result of the shrinkage of the inner container and the tightening straps that occurs during filling no additional tension arises in the latter. It no further components are required at all, it is sufficient to incline the tensioning straps to the container axis in such a way that that the shrinkage of the inner container and the tensioning straps compensate each other about. Of course you can also use more constructive effort the tensile stress in the tensioning straps keep constant in the usual way, e.g. B. by interposing tension springs. The size of the container are essential limits are set by its permissible length. Low-temperature-resistant materials can be used as the material for the drawstrings use, preferably chroe-nickel steels, as these are next to sufficient strength also have a relatively low thermal conductivity. Smaller than conventional containers

009812/0545 ^{/ 3}

- 3 - EM 132

HG 355

The container according to the invention has to medium vaults a lower weight with the same good insulation effect. He can produce and assemble fewer components from old age are easier and cheaper. .

The invention will now be explained in more detail using an example. It is one already in the Container with 2000 1 capacity realized in practice. The drawing: "shows the tank in longitudinal and cross-section. Only the parts that are essential to the invention are shown. Sinfullöffmangen. Connections for evacuating the isolation room etc. are not shown.

A box 2 each spacer is welded to the middle of the two bottoms of the inner container 1. At each end of the outer container 3 there is a reinforcing ring 4 in which; Animal eyelets 5 adjustable from the outside are used. A tightening strap 6 is drawn through each of these (5) and welded to the bottom of the box 2. The tightening straps 6 are inclined by such an amount against the container axis that the shrinkage of the inner container 1 and The tightening straps 6 are tightened by tightening the eyelets 5 from the outside or by clamping small blocks 7 between the tightening strap β and the bottom of the inner container 1. The container is for horizontal Storage and transport thought, but it can also be used with a vertical axis. The space between inner container 1 and outer container 3 is evacuated in the usual way and filled with insulating material.

/ 4

0098 ^ 2/0545
BATH ORIGINAL

Claims (4)

- 4 - EM 132 355 Double-walled transport or storage container for cryogenic, liquefied gases, in which the inner container is on The outer container is suspended, characterized in that tensioning straps are used as suspension means, which are held by the In the middle of the two inner container bottoms are stretched to the outer container. 2. Container according to claim 1, characterized in that that in the middle of the two inner container bottoms spacers are attached on which the tensioning straps are attached. 3. Container according to claim 1 or 2, characterized in that that the tensioning straps are inclined to the container axis in such a way that the shrinkage of the inner tube during filling holder and the straps are mutually compensated, and the tensile stress in the straps is thus approximately is kept constant. 4. Container according to claim 1 or 2, characterized in that that elastic elements - preferably tension springs - are attached between the strap and the inner or outer container. DI Ba / jk April 24, 1967 009812/0 545