| 摘要 |
<p>The present invention relates to a plugging device (1), comprising a packer device (4) for pressure tight sealing of a pipe. The packer device (4) comprises a cone device (10) comprising a first cone (12) and a second cone (14), each having their base faced towards each other and each comprising a tapering surface (12a, 14a). A first packer supporting device (20) is provided on a first side of the cone device (10), a second packer supporting device (22) is provided on a second side of the cone device (10) and a packer body (50) provided is between the first packer supporting device (20) and the second packer supporting device (22). The first and second packer supporting devices (20, 22) comprise supporting arms (24) having a first end (24a) movably connected to the plugging device (1) and a second end (24b) connected to either a front supporting element (30) or a rear supporting element (40). A sliding surface is provided on the first and second packer supporting device (20, 22) for sliding up and down the tapering surface (12a, 14a) of the first or second cone (12, 14), thereby bringing the packer device (4) between its expanded and retracted positions respectively. The front supporting elements (30) and the rear supporting elements (40) comprise front surfaces (32, 42), where the front surfaces (32, 42) are faced towards the base of the first and second cones (12, 14) and provide an extrusion barrier surface for the packer body (50) in the expanded position.</p> |
