Offshore submarine storage facility for highly chilled liquified gases
US4365576A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 21, 1980 |
| Grant date | Dec 28, 1982 |
| Priority date | — |
| Expiry date | Jul 21, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0128
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.