DOUBLE-SHELL TYPE LOW TEMPERATURE TANK

Japanese Patent JPS59141000

A

PURPOSE:To make an independent breeding tank unnecessary,by providing such an arrangement that an outer tank is formed in a two unit structure consisting of a floating roof and an outer tank body, and the floating roof is elevated in accordance with variations in the pressure differential between the inner and outer tanks. CONSTITUTION:An inner tank 1 which is set on a heat-insulator 4 is disposed in an outer tank comprising an outer tank body 2 and a floating roof 3 which is elevatably fitted onto the outer tank body 2 to cover the inner tank 1. Pedestals 5 are attached to the inner wall of the outer tank body 2 in predetermined positions to support the floating roof 3, and further, stoppers 7 are projectingly formed on the inner wall of the floating roof 3 below an outer surface receiving member 6 to prevent the floating roof 3 from raising above a predetermined level. A seal bag 8 is attached along the entire periphery of the floating roof 3 below the stoppers 7 to air-tightly seal between the outer tank body 2 and the floating roof 3.

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SAKURAI HIDEYO
NAKACHI TADATAKA
MORIYA AKINORI
NOMURA MITSUO

JP1334583A

August 13, 1984

January 28, 1983

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ISHIKAWAJIMA HARIMA HEAVY IND

F17C13/00; B65D88/34; (IPC1-7): F17C3/00; F17C13/08

Tsunemitsu Yamada

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