| 摘要 |
A surface assembly that communicates with subsea structures and includes a working deck 11 on a floating structure. The working deck has an aperture 13 extending axially therethrough. A riser 15 extends from a subsea location to the working deck and through the aperture. The surface assembly includes a frame extending circumferentially around the riser so that the frame moves axially with the riser. The assembly also includes a tensioner assembly connected between the working deck and the frame. The tensioner assembly includes a piston 21 slidably carried in a piston chamber 19, a piston rod 23 extending from the piston and away from the piston chamber, and a shroud 35 enclosing the piston rod. The shroud has a plurality of telescoping segments 35a, b, c with at least one of the shroud segments being movable in unison with the piston rod. |
