초록 ▼

Improvements in an offshore platform and submarine storage facility for highly chilled liquified gas, such as liquified natural gas, are disclosed. The improved facility includes an elongated, vertically oriented submerged anchoring frame to which one or more insulated storage tanks are moveably mou

Improvements in an offshore platform and submarine storage facility for highly chilled liquified gas, such as liquified natural gas, are disclosed. The improved facility includes an elongated, vertically oriented submerged anchoring frame to which one or more insulated storage tanks are moveably mounted so they can be positioned at a selected depth in the water. The double piston tank is constructed with improved seals to transfer ambient water pressure of the selected depth to the cryogenic liquified gas without intermixture. This transferred pressure at the depth selected aids in maintaining the liquified state of the stored liquified gas. Structural improvements to the tank facilitating ballasting, locking the double piston cylinders together and further facilitating surface access to the tank for inspection, repairs and removal, and structural improvements to the platform are disclosed.

대표청구항 ▼

In an offshore submarine storage facility in the ocean and the like for liquified energy gases and similar liquid materials at cryogenic temperatures which includes a vertically compressible insulated submarine storage tank positionable at various selected depths in the water for storing said liquid

In an offshore submarine storage facility in the ocean and the like for liquified energy gases and similar liquid materials at cryogenic temperatures which includes a vertically compressible insulated submarine storage tank positionable at various selected depths in the water for storing said liquid materials, said tank including ambient water pressure transfer means for transferring external ambient water pressures available at a selected depth to the liquified material stored therein without intermixture of water and liquified material to aid maintaining its liquid state, an improvement comprising: frame means surrounding said tank and to which said tank is slidably attached, for anchoring said tank in place in the ocean and for enabling said tank to be positioned at said selected depths, said frame means including openable gate means therein, adjacent the surface of the ocean, for enabling said tank to be installed in and removed from said frame means, while said tank is floating at the surface of the ocean.