초록 ▼

Liquefied gas is stored in a large rigid or semirigid cylindrical container. Between the walls and floor of this container and the walls and floor of an outer container, which may be an earthen cavity in which the container rests, is distributed a continuous layer of insulating material such as perl

Liquefied gas is stored in a large rigid or semirigid cylindrical container. Between the walls and floor of this container and the walls and floor of an outer container, which may be an earthen cavity in which the container rests, is distributed a continuous layer of insulating material such as perlite or vermiculite in granular form. This insulating material serves as the sole means of support for the rigid or semirigid container and the liquefied gas stored therein. An impediment is included in the construction near the intersection of the floor and side wall of the rigid or semirigid container, the impediment completely encircling the container to substantially limit the cross-sectional area through which the granular insulation material may flow upward. By confining this cross-sectional area, the creep or migration of insulation material from beneath the container during initial filling, repeated filling and emptying of the liquefied gas contents of said container is substantially reduced or eliminated.

대표청구항 ▼

Apparatus for storing a cryogenic liquid comprising: an outer structural vessel having a height and width in excess of 10 feet; an inner structural vessel spaced from said outer structural vessel throughout its entire perimeter and bottom; granulated compressible insulation material filling the void

Apparatus for storing a cryogenic liquid comprising: an outer structural vessel having a height and width in excess of 10 feet; an inner structural vessel spaced from said outer structural vessel throughout its entire perimeter and bottom; granulated compressible insulation material filling the void between said inner and outer vessels, said insulation being the sole means of support of said inner vessel; and means for prohibiting migration of said granulated insulation material from beneath said inner structural vesSel to the sides thereof.