Large-current rotary conductive device

The utility model belongs to a rotary conductive device. The utility model relates to a conductive device, in particular to a large-current rotary conductive device. The device comprises a fixed end,a rotating end, a bearing, a conducting medium, a sealing sleeve, a sealing piece and a cooling structure, the rotating end is fixed to the fixed end through a bearing. Conducting media are arranged in the two opposite end faces of the rotating end and the fixed end. The sealing sleeve is arranged between the rotating end and the fixed end; sEALING OF CONDUCTIVE MEDIA, a mounting groove for mounting a sealing piece is formed in the fixed end; the sealing piece is arranged in the mounting groove and is attached to the surface of the rotating end; according to the utility model, a double-sealingstructure of the sealing sleeve and the sealing element is adopted, so that the phenomenon of leakage of a conductive medium due to high-temperature evaporation is avoided, and the sealing and cooling device is suitable for h