DOUBLE-SHELLED TANK AND LIQUEFIED GAS TRANSPORT VESSEL

摘要

A horizontal type cylindrical double-shell tank (2A) includes: an inner shell (3) including an inner shell main part (31) and an inner shell dome (32); and an outer shell (4) including an outer shell main part (41) and an outer shell dome (42). The outer shell dome (42) incorporates therein a deformable member (5). A first restricting mechanism (6) is disposed between a movable part (42A) of the outer shell dome (42) and the inner shell dome (32). A second restricting mechanism (7) is disposed between a fixed part (42B) of the outer shell dome (42) and the inner shell dome (32). The first restricting mechanism (6) restricts movement of the movable part (42A) of the outer shell dome (42) and movement of the inner shell dome (32) relative to each other in a particular direction while allowing the inner shell dome (32) to contract. The second restricting mechanism (7) restricts movement of the inner shell dome (32) in a radial direction while allowing the inner shell dome (32) to contract and allowing the inner shell dome (32) to move in the particular direction relative to the fixed part (42B) of the outer shell dome (42).