COMPRESSOR ROTOR SEAL Russian patent published in 2018 - IPC F04D17/12 

FIELD: engines and pumps.

SUBSTANCE: invention relates to rotor compressor (1) having pinion shaft (2), including several axially arranged segments (3, 4, 5), and having composite seal (6), for sealing of pinion shaft (2). To avoid imbalances of compressor rotor (1) or respectively to allow for the possibility of centering without a gap, seal element (13) of composite seal (6) rotating together with compressor rotor (1), it is provided that pinion shaft (2) has impeller segment (5), to which the impeller can be placed, connection segment (5) and toothed segment (3) axially disposed between the impeller segment (5) and the connection segment (4). Toothed segment (3) at ends (7, 8) has a serrated toothing (9) with which toothed segment (3) is held axially between the impeller segment and the connection segment by means of respective mating toothing (10) at ends (11, 12) of impeller segment (5) and connection segment (4), in particular, is retained with centering without a gap, and sealing element (13) of composite seal (6) is mounted on this toothed segment (3), connected to toothed segment (3), at least with force closure.

EFFECT: absence of imbalances of the compressor rotor, providing the possibility of centering without a gap of the sealing element of the composite seal rotating together with the compressor rotor.

9 cl, 1 dwg