FIELD: engine building.
SUBSTANCE: invention relates to an integrated motor-compressor. Balancing and sealing piston for integrated motor-compressor comprises balancing piston (50) configured to be mounted on motor-compressor shaft (38) to compensate for differential pressure applied to wheels (34, 35, 36, 37) of the compression section of the motor-compressor, between suction pressure and discharge pressure, sealing device (51) surrounding the balancing piston and made with possibility of installation on housing (31) of motor-compressor (30) to ensure tightness of the compression section. Balancing and sealing piston additionally comprises a gas discharge channel (52), wherein the axial position of the discharge channel is determined so that the pressure value of the discharged gas is equal to the preset value (Pext).
EFFECT: invention increases efficiency of the motor-compressor.
10 cl, 3 dwg
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