Seawater system pipeline of nuclear power station

A seawater system pipeline of a nuclear power station comprises a sealing ring, a flange, a straight pipe and a limiting steel sheet. The sealing rings are welded to the two ends of the straight pipe, the flanges are arranged on the sealing rings in a sleeving mode, the two limiting steel sheets are connected to the outer walls of the sealing rings, and the limiting steel sheets are installed on the outer walls of the sealing rings at an interval of 180 degrees to limit the moving range of the flanges. The limiting steel sheet is welded to the outer wall of the sealing ring. And the movement range of the limiting flange is 20 mm left and right. The inner surface of the straight pipe and the sealing ring are integrally subjected to rubber lining corrosion prevention, and the rubber lining layer extends out of the outer side face of the sealing ring. And the lining rubber is butyl rubber with the thickness of 4mm. 一种核电站海水系统管道，包括密封环，法兰，直管、限位钢片；密封环焊接在直管两端，法兰套装在密封环上，限位钢片连接在密封环的外壁，限位钢片共有两个，在密封环的管外壁间隔180°各安装一个限位钢片，限