The invention discloses a self-enclosed packer which is applied to sealing of a ring-shaped gap between a pile and a sleeve in a marine drilling platform, and arranged between the sleeve and the pile, The self-enclosed packer is characterized by comprises a rubber sleeve; the rubber sleeve is coaxial with the sleeve and arranged at the inner bottom of the sleeve; the bottom of the rubber sleeve is in sealed connection with the sleeve through a bottom fixing device; a cement mortar accommodating cavity is formed in a gap between the rubber sleeve and the sleeve; the top of the rubber case is connected with the sleeve through a top fixing device; mortar grouting openings are formed in the top of the rubber case. Only the rubber case and the corresponding fixing devices are subjected to automatic sealing, so that the self-enclosed packer is simple in structure, easy to manufacture and low in cost; besides, the self-enclosed packer has the advantages of being high in safe factor like an active packer, simple to mount like a passive packer, free of pipelines and power systems, and the like.
Self-enclosed packer
26.08.2015
Patent
Elektronische Ressource
Englisch
IPC: | B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS |