Lock device to feed camera connected to cable, into pressurized pipe lines esp. gas pipes has shut-off fittings and components with dimensions adapted to camera head and cable to permit insertion without switching-off of gas

摘要

The lock device has a shut-off fitting (8) next to the pipe (10), an intermediate tube (5) on the fitting, and a second shut-off fitting. This consists of a conduit gland cylinder (9) with a floor (9') having a passage adapted to the size of the camera (6). A two-part base plate (4) has a passage for the cable (7). A seal pack (3) has sealing discs each with a passage for the cable and a cut-out in one side. A two-part pressure piece (2) also has a cable-sized passage. There is a regulateable press device, e.g. a union nut (1) for the seal pack, which consists of a spiral of sealing material.