| 摘要 |
A stress relief joint (10) for use with riser pipe (22) in floating systems wherein a vessel is subjected to variable motion caused by wind, currents and/or wave action. The riser pipe (22) has one end connectable to the sea floor and an upper portion arranged to pass through an opening at the bottom of the vessel. The lower end, which is connectable to other pipes at the sea floor, is provided with concentric pipes or sleeves (30, 32) around the riser (22). The lower ends of the pipes (30, 32) and riser (22) are welded to a flange (34). The upper end of each of the concentric pipes (30, 32) extends beyond the upper end of the pipe immediately surrounding it. The annulus between the concentric pipes (30, 32) and the riser (22) may be filled with a durable and pliable material (36). Also, shims (38) may be inserted in the annulus at the end of each pipe segment. <IMAGE> |
