| 摘要 |
<p>The invention refers to a device for sealing an annular space formed between an outer cylindrical element (4) having an end closure (16) and an inner pipe (1) extending within the outer element and having a free end. The invention incorporates a packer element (2) being slidably disposed around said pipe (1) , an actuation element (6) adapted for telescopic assembly around the outer surface of the pipe (1) and slidable from a first position to a second position, a conical ring (12) adapted for installation on the pipe (1) , where the actuation element (6) comprises an abutment element (10) designed for abutment against said packer (2) , and an actuation pipe (8) extending beyond the pipe (1) first end when the actuation element (6) is in said first position. The invention also refers to a method for sealing the annular space.</p> |
