| 摘要 |
The present invention regards a joint for use in a riser (1) extending between a floating installation (3) and a subsea installation (2). The joint comprises an inner pipe segment (21) and an outer pipe segments (22), ar-ranged moveable relative each other in an axial direction and connectable to respective riser segments, forming a chamber (23) between them with a radially extending pis-ton (24), dividing the chamber (23) in a first chamber part (25) and a second chamber part (26), wherein on of said chamber parts (25) in an initial position of the joint is adapted to contain a mainly incompressible fluid, this chamber part (25) decreasing in volume as the inner pipe segment (21) is moved relatively out of the outer pipe seg-ment (22). According to the invention the joint is config-ured with a fluid line connection (30) from said one cham-ber part (25) to the other chamber part (26), configured such that the relative movement of the pipe segments (21, 22) is controlled by the allowed flow rate of a fluid flowing out of the chamber part (25) through the fluid line connec-tion (30) to the other chamber part (26). |
