Buckling Restraint System of Expansion Joints for LNG Shipments

摘要

The present invention relates to an anti-buckling device for a telescopic pipe installed in a pipe for an LNG carrier that transports liquefied natural gas (hereinafter referred to as "LNG"), and improves the stability of pressure by improving the structure of the telescopic pipe to increase and decrease the amount of piping. Even if this size is increased, it is possible to prevent the expansion joint from being bent. To this end, in the present invention, the first and second bellows portions 20 and 30 are welded and fixed to a pair of flanges 11, and a cylindrical portion 40 is provided between the first and second bellows portions 20 and 30. In the apparatus for preventing the buckling of a telescopic pipe of an LNG ship pipe fixed with welding), one end of the first sleeve 60 is welded and fixed to the inside and outside of one bellows portion, and the other end of the first sleeve 60 is an opposite bellows portion. Characterized in that the extension is installed so as to overlap.