Cryogenic storage vessel
McDonnell Douglas Corp.'s new cryogenic storage vessel design features internally-insulated tanks which may be used to store and transport liquefied gas at temperatures as low as -423/sup 0/F, and store and transport fluids under high pressure or atmospheric pressure. The cargo tanks, which are integrally supported inside the cargo holds, feature a reliable liner-insulation system which can be installed in a minimum of time. The fiber-glass liner is impregnated with a polyurethane or epoxy resin to about 60% by weight resin content laminate. The porosity of the liner allows the pressure within the reinforced foam insulation to reach or be near equilibrium with the liquid inside the cargo tank as it is being filled, emptied, or stored. The cryogenic liquid is contained within the gaseous envelope within the insulaion foam composite, which consists of a number of prefabricated 3D foam blocks or segments bonded together to form long and narrow segments with interlocking edges to provide maximum flexibility in conforming to the contours of the vessel and reduction of the liner-insulation installation time. A strip of perforated aluminum foil is bonded to the outer surface of the liner to serve as a static electrical discharge element and as a barrier against flame propagation. Damage to the insulation can be easily detected by visual examination and repaired with a splice. Disbonding can be detected before it reaches a serious stage by observing frost patterns on the vessel.
- Assignee:
- McDonnell Douglas Corp.
- Patent Number(s):
- US 3814275
- OSTI ID:
- 5721129
- Country of Publication:
- United States
- Language:
- English
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