FIELD: turbines or turbomachines.
SUBSTANCE: invention can be used in turbocompressors. Turbocompressor system has centrifugal compressor (901) comprising an impeller with a plurality of radially located blades connected to the incomplete rear disc (952) and shaft (904). Incomplete rear disc (952) comprises a plurality of cutout sections. Each cutout section is located between two blades on outer circumference of impeller. Shaft (904) connects compressor impeller with drive unit (960). Rotary disc (974) is located inside cavity (973) of central housing (910) of shaft. Rotary disc (974) is connected with shaft (904). Cavity (973) is set by shaft central housing (910) and cavity walls and limits space that at least partially surrounds rotary disc (974). Channel (970) connects compressor outlet (972) with cavity (973). Channel (970) communicates compressor outlet (972) with space of cavity (973) by fluid medium. Cavity (973) is completely closed, except for point of connection of said cavity with channel (970).
EFFECT: technical result consists in reduction of load from axial force on shaft.
7 cl, 14 dwg
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