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    • 9. 发明专利
    • ASEISMATIC STRUCTURE OF DOUBLEESHELL LOWWTEMPERATURE TANK
    • JPS56124800A
    • 1981-09-30
    • JP2866680
    • 1980-03-06
    • KAWASAKI HEAVY IND LTD
    • TOMITA TSUTOMUKAKEHI KATSUYUKI
    • F17C13/08F17C3/02F17C13/12
    • PURPOSE:To prevent sliding of an inner tank rationally and improve the safety of a double-shell low-temperature tank by installing the restricting plates which form the equal repulsive force against the horizontal force from any direction under a specific condition. CONSTITUTION:In this aseismatic structure, a number of restricting plates 10 are suspended at a proper intervals between the outside edge of an annular plate 8 and the upper surface of the base plate 9 of an outer tank 2, and the upper end of each restricting plate 10 is fixed onto the outside edge part of the annular plate 8, and the lower end is fixed on the base plate 9 of the outer tank. With such a constitution, if an earthquake arises, and a horizontal force H acts in the direction of arrow, the largest repulsive force is generated on the restricting plate 10 which crosses at right angles with the direction of the horizontal force H and on the axis line which passes the center of the inner tank 1. However, each repulsive force is generated gradually on the restricting plates 10 which are positioned at the right and left, having the restricting plate 10 described above as a center, and the total repulsive force opposes sufficiently the horizontal force H described above.