System, tooling and method of construction of cryogenic tanks fo

Details System, tooling and method of construction of cryogenic tanks fo System, tooling and method of construction of cryogenic tanks fo

1977-11-22

1980-06-17

Kunin, Stephen G.

Ships

Building

Freighters

114 77R, 220467, 220901, B63B 2508, B65D 2518

Patent

active

042078270

ABSTRACT:
Prefabricated rigid insulating panels of great length, made of a fiberglass reinforced prestressed foam enclosed in a gas tight envelope and covered on their inner face by a folded metal membrane are glued directly to the cavity walls of the load bearing structure of a cryogenic tank by means of variable thickness adhesive mastic strips, which also separate channels for a gas circulation against the panels' back face. The beveled edge surfaces of adjacent panels are rigidly bonded under pressure. Panel handling, gluing operations, and membrane welding inside the closed space of a tank are done using telescopic towers fitted with four mobile arms, one of them supporting a worker-carrying bucket. Complete self standing inner tanks may also be assembled outside and inserted into the cavity of a vessel before it is covered over. Inflated air hoses attached to the outer faces of the inner tank center it inside the cavity during the injection and curing of a liquid thermosetting bonding agent between the cavity walls and the inner tank. The hoses subsequently provide channels for a gas circulation against the back face of each panel for monitoring its integrity.

REFERENCES:
patent: 3411656 (1968-11-01), Jackson
patent: 3658627 (1972-04-01), Kaminsky
patent: 3753413 (1973-08-01), Ichikawa et al.
patent: 3861021 (1975-01-01), Yamamoto
patent: 3878806 (1975-04-01), Garcia
patent: 3931424 (1976-01-01), Helf et al.
patent: 3941272 (1976-03-01), McLaughlin

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