Container for liquefied gases

Abstract

Abstract 1,186,060. Carrying liquefied gases. CONCH OCEAN Ltd. 9 Oct., 1968 [31 Oct., 1967], No. 49426/67. Headings B7A and B7S. [Also in Division F4] Heat insulation material 16, 17, 20, 21, Fig. 3, surrounding a cold liquidized gas storage tank 15 of polygonal form, Fig. 2, has embedded therein near the outer surface a film of water impermeable material 19 extending parallel to the tank sides whereby any water or water vapour which penetrates the outer thickness 20 of the insulation which is permeable runs down the film 19 and is collected in a recess 13a in an outer tank 13, e.g. the inner hull of a tanker. The insulation comprises a thick layer 17 of balsa wood mounted on spaced water impermeable wood strips 16 attached to the inner hull 13, a layer of permeable fibreglass 20 between adjacent strips 16 and impermeable fibreglass 21 between layer 17 and the film 19. The latter may be of metal or plastics material and is adhesively secured to the strips 16, which are provided with drain holes 16a. In a modification the storage tank is of the self-supporting type and the insulation which is spaced therefrom comprises a thick inner layer of balsa wood and a thin outer layer of fibreglass between which layers the water impermeable film is sandwiched; provision being made for collecting water running down the outer surface of the film and also for collecting leakage from the tank as described in Specification 919,755.

Inventors

• 👤 Robert G Jackson

Bibliographic Details