MEASURING APPARATUS OF FLEXIBLE LENGTH OF A LNG STORAGE TANK(INNER TANK) CORRUGATION

摘要

PURPOSE: An apparatus for measuring the flexible length of a primary bulkhead corrugation part of an LNG storage tank is provided to measure the flexible length of the corrugation part of a primary bulkhead. CONSTITUTION: An apparatus for measuring the flexible length of a primary bulkhead corrugation part of an LNG storage tank comprises a fixed part(100), a movable part(200), a horizontal bar(300), and a movable bar(400). The fixed part is fixed in one side of the corrugation part of a membrane panel. The movable part is fixed in the other side of the corrugation part and is interlocked with the flexible motion of the membrane panel. The horizontal bar is extended from the fixed part to the movable part and has a slot(310). The movable bar is arranged in the slot of the horizontal bar and is attached to the movable part. When the membrane panel is expanded, the movable bar moves along the slot.