Liquefied gas storage tank and ship comprising same

A liquefied gas storage tank comprising a corner block that is disposed on a corner portion in which a first surface and a second surface at different angles meet each other and forms a storage space accommodating liquefied gas,

• wherein the corner block includes a lower block provided inside the first surface and the second surface and formed of a single board,
• an integrated upper block bonded and connected to a secondary barrier of the lower block and formed of a single board,
• an upper connecting block bonded and connected to the secondary barrier exposed between the integrated upper block disposed adjacent to each other, and
• a barrier fixing member installed on an upper surface of the integrated upper block and configured to fix a primary barrier,
• the integrated upper block includes one primary outer plywood provided inside each of the first surface and the second surface and bonded and connected to the secondary barrier, wherein the secondary barrier extends laterally and outwardly beyond the primary outer plywood,
• one primary corner insulating material stacked on the primary outer plywood, and
• one primary inner plywood stacked on the primary corner insulating material, and
• the barrier fixing member is formed of a plurality of unit barrier fixing members side by side installed adjacent to each other on the one primary inner plywood.

A liquefied gas storage tank comprising a corner block that is disposed on a corner portion in which a first surface and a second surface at different angles meet each other and forms a storage space accommodating liquefied gas,

• wherein the corner block includes a lower block provided inside the first and second surfaces and formed of a single board, an upper block bonded and connected to a secondary barrier of the lower block, and an upper connecting block bonded and connected to the secondary barrier on an upper surface of the lower block disposed adjacent thereto to connect the lower block,
• the upper connecting block includes a first corner connecting fixing unit and a second corner connecting fixing unit respectively provided inside the first surface and the second surface, bonded and connected to the secondary barrier, and each having a structure in which a first corner connecting plywood, a corner connecting insulating material, and a second corner connecting plywood are stacked, wherein the secondary barrier extends laterally and outwardly beyond the first corner connecting plywood, and
• a corner connecting bent portion installed in a corner spatial portion between the first corner connecting fixing unit and the second corner connecting fixing unit,
• wherein the corner connecting bent portion has two side surfaces that are perpendicular to the secondary barrier, each side surface has a height reduced from a total height of each of the first and second corner connecting fixing units.