Sealing sleeve for inserting into a piping system

摘要

The invention relates to a sealing sleeve (1) for inserting into a piping system in order to seal a leak, comprising a steel sheet (3), which is annularly bent together and can be expanded and the interior strip end (4) and exterior strip end (5) of which overlap in the circumferential direction (20), and comprising at least one locking device in the form of a slot (7) which is arranged in the steel strip (3) in the circumferential direction (20) and which has at least one row of teeth (8), said locking device also having at least one detent member (9), which is suitable for engaging in at least one row of teeth (8). According to the invention, the sealing sleeve (1) has at least one detent member (9) which is of a multi-part design. Said detent member has at least one guide element (10), at least one detent element (11) and at least one tensioning element (13), which is arranged between one guide element (10) and one detent element (11) and is designed in such a way that the tensioning force between the guide element (10) and the detent element (11) can be varied and thus the detent effect of the detent member (9) can be controlled. A controlled detent action and thus secure engagement of the detent member (9) in at least one row of teeth (8) is thus produced. The detent member (9) has a simple structural design. Reliable functionality is achieved, even under difficult conditions, which furthermore also provides the option of manipulation by robots or other mechanical devices. This is preferably achieved using an electric-motor tensioning device or hydraulic tensioning device.