| 摘要 |
A sealing device ( 1 ) and method for sealing between a chain ( 2 ) and a chain pipe ( 3 ), said chain for example being an anchor chain on a marine offshore platform or on a ship, and said chain pipe ( 3 ) leading for example to a chain locker for onboard storage of the chain in said platform or ship. The sealing device ( 1 ) comprises at least two opposing cover lids ( 7 ) positioned at the mouth ( 8 ) of the chain pipe ( 3 ) or an extension collar ( 7 ) thereof. The cover lids ( 7 ) are movably arranged from an open position into a closed position in which the cover lids ( 7 ) abut each other and seal the chain pipe ( 3 ) from water intrusion by sealingly engaging a chain link ( 10 ) of the chain. Furthermore, the cover lids ( 7 ) are provided-in mutual abutment sides ( 15 ) thereof-with one or more recesses ( 16 ) shaped in conformity with the contacting outer periphery ( 17 ) of said chain link ( 10 ). The invention is especially characterized in that the cover lids ( 7 ) each exhibit at least one inflatable seal element ( 18 ), said seal element ( 18 ) extending along a respective mutual abutment side ( 15 ) of the cover lids ( 7 ) and being adapted to expand upon pressurization with a fluid such as pressurized air, into a radial sealing engagement with the chain link ( 10 ), and that the cover lids ( 7 ) are attached to an extension collar ( 9 ) of the chain pipe ( 3 ), said extension collar ( 3 ) being movably arranged with respect to the rest of the chain pipe ( 3 ) by means of a flexible interconnection collar ( 47 ) mounted therebetween. |
