DE7603945U1 - HORIZONTALLY ARRANGED CYLINDRICAL VESSEL FOR LOW-BOILING LIQUID GASES - Google Patents

Description

I I I 1 I 1 I 1

¹ '- ,,' MG 984 MESSER GRIESHEIM GMBH EM 708

Ca / R

Password: horizontal tank. January 12, 76

Portfolio: A
Inventor: J. Hesse

Horizontally arranged, cylindrical container for low-boiling liquefied gases

The invention relates to a horizontally arranged, double-walled, cylindrical container for low-boiling liquefied gases.

When full, such containers have higher evaporation rates than vertically arranged containers. This is due to, that due to the structural design of the inner container suspension and the filling and removal lines more thermal bridges (4 - 8% evaporation per day) than with vertically (2 - 4% evaporation per day) arranged containers. The filling, removal and exhaust pipes are usually arranged in the middle of an end face of the container. Run through if the containers are arranged vertically these lines first enter the gas space, before they, from the exhaust line of course apart from submerging in the liquid. In the case of horizontally arranged tanks, however, these lines join the usual arrangement directly into the liquid space. This results in particularly effective thermal bridges, resulting in an increase the evaporation rate results by approx. 1 - 2% per day, in contrast to vertically arranged containers.

The invention is based on the object of providing a more favorable arrangement of the lines for filling, removal and degassing or Overflow the evaporation rate with horizontally arranged, cylindrical, reduce cryogenic containers.

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In the case of a horizontally arranged, double-walled, cylindrical container for low-boiling liquefied gases, with Lines for filling, removal and degassing or overflow, this is achieved according to the invention in that the Filling and removal lines enter the gas space remaining when the container is filled, run through the gas space and end at the deepest points of the container. The heat transfer can be reduced even further if instead only one common line is used for each filling and removal line. However, if you have separate lines want to retain, it is possible, for example, to use a coaxial double pipe in which, for example, the outer pipe of the extraction and the Inner tube is used for the filling. For full effectiveness of the arrangement according to the invention, it is advantageous, albeit the exhaust pipe enters the remaining gas space and only runs there.

In the arrangement according to the invention, the lines come either not at all, or in contact with the liquid only after passing through the gas space. There are thus with regard to conditions similar to those of vertically arranged containers, with a corresponding reduction in the evaporation rate .

Two embodiments of the invention will be based on the attached Drawings are explained.

Show it:

1 shows a cross section through a container according to the invention , arranged lines;

FIG. 2 shows a section along the line A - A in FIG. 1; FIG. Fig. 3 is a section along the line B-B in Fig. 1; 4 shows a container with a coaxial tube.

The container shown in Figures 1 to 4 consists of an inner container 1 and an outer container 2. The space 3 is vacuum insulated. The container is with a low boiling point liquefied gas 4 filled, above which the gas space is located. The container is used for filling and removal FIGS. 1 to 3 show a single pipe 6 which, according to the invention, enters the gas space 5, runs through it and connects to it ends at the deepest point of the container. Figure 3 shows a corresponding arrangement of the exhaust pipe 7, which in the gas space 5 enters and ends in this. It also serves as an overflow pipe.

In the case of the container shown in FIG. 4, a coaxial double tube 8 is used for filling and removal. Through the inner tube For example, the filling can take place, the removal through the outer tube.

In the case of a 60 l nitrogen container, the introduction of the lines into the gas space according to the invention made it possible to reduce the evaporation rate when filled with N ₂ from approx. 7% per day to approx. 6% per day. This results in a lower gas loss and a lower pressure increase. Since the filling line is led to the lowest point of the container, there is a further advantage of a significantly shorter filling time with lower transfer losses. The reason for this is that when the liquefied gas emerges from the filling line inside the container, the liquid jet is not atomized and therefore does not hit the initially warmer wall of the container, but flows directly into the liquid gas bath the filling time can be reduced from 15 min to 10 min, with a nitrogen pressure in the storage tank of 2 bar.

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Claims (4)

j .. '- 4 - ro Expectations horizontally arranged, double-walled, cylindrical Container for low-boiling liquefied gases, with pipes for filling, removal and degassing or overflow, characterized in that the filling and removal lines enter the gas space remaining when the container is filled, run through the gas space and at the the lowest point of the container. 2. Container according to claim 1, characterized by a single one, the filling and removal serving management. 3. Container according to claim 2, characterized by a coaxial double tube for filling and removal. 4. Container according to one of claims 1 to 3, characterized in that the exhaust pipe also enters the remaining gas space and only runs there. STPH / Ba / Tr
December 18, 1975 7603845 Θ3.06.76