CARGO TANK USING STRAIGHT CORRUGATION MEMBRANE CONNECTION MEMBER FOR EXTREMELY LOW TEMPERATURE SUBSTANCE CARRIER

摘要

The present invention relates to a cargo hold of an extremely low temperature material cargo ship, which comprises: a hull shell which forms the exterior of a cargo hold; a membrane first protective wall which is in contact with an extremely low temperature material inside the cargo hold; a first insulating wall which is installed in the external side of the first protective wall; a membrane second protective wall which is installed in the external side of the first insulating wall; and a second insulating wall which is placed in the external side of the second protective wall in order to be fixated to the hull shell. At least part of the second protective wall is formed of a metal material. The second insulating wall includes a polyurethane form insulator, and upper plywood which is formed on the top surface of the polyurethane form insulator. The second protective wall is characterized by being combined with the second insulating wall through a combining unit connected with the upper plywood. According to an embodiment of the present invention, the cargo hold of an extremely low temperature material cargo ship can secure sufficient connection force between the second insulating wall and the second protective wall by forming the second protective wall of a stainless material and by combining the second protective wall with the upper plywood of the second insulating wall through the installation of the upper plywood on the second insulating wall in order to fixate the second protective wall.