Insulated marine container for liquefied gas

Patent · Tue Aug 15 04:00:00 EDT 1978

OSTI ID:6281487

Schuler, A L; Post, D L

General Dynamics Corp.'s improved thermal-insulation system of panels of foamed polymeric material for the outside of spherical liquefied-gas cargo tanks maintains boiloff at less than 0.25%/day without the use of auxiliary refrigeration. A first layer of foamed polymeric (preferably polyurethane) panels, each having a predetermined hole pattern, are supported by studs affixed to the exterior surface and extending into the holes. Fibrous insulation fills the remainder of the holes and the joints between the edges of adjacent panels. Heat-insulating posts extending outward from the studs support a layer of fibrous insulation and a third layer of foamed polymeric panels having an offset hole pattern. The first or inner layer is 2-in.-thick polyurethane panels, the second panel is 1/2-in.-thick fiberglass mat, and the third layer is 6-in.-thick polyurethane foam in the form of three courses of 2-in.-thick panels. Fasteners secure the third-layer panels to the posts. Insulating material is foamed in situ through apertures in the fasteners to fill the holes around the posts.

• Assignee: General Dynamics Corp.
• Patent Number(s): US 4106424
• OSTI ID: 6281487
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
032000* -- Natural Gas-- Transport
Handling
& Storage
CONTAINERS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
LAYERS
LIQUEFIED NATURAL GAS
MARITIME TRANSPORT
MATERIALS
NATURAL GAS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
SYNTHETIC MATERIALS
TANKS
THERMAL INSULATION
TRANSPORT