ASSEMBLY OF TURBO-COMPRESSOR WITH COOLING SYSTEM Russian patent published in 2014 - IPC F04D29/58 F04D17/12 F04D25/06 

FIELD: machine building.

SUBSTANCE: assembly (10) of a turbo-compressor is divided along axis (12) of rotor (11) into three sections (13, 18, 22): supporting section (13), and those of (18) engine and (22) compressor. Supporting section (13) has active magnetic bearing (14) for support of rotor (11). Engine section (18) includes engine (19) having stator (20) located along axis (12) of rotor (11). Stator (20) is enveloped with annular gap (21) of the engine, which is formed between stator (20) and rotor (11). Compressor section (22) has compressor (23) for compression of cooling fluid medium (30). Additionally, assembly (10) of the turbo-compressor includes common gas-tight housing (26) and cooling system (27). Housing (26) encloses rotor (11), supporting section (13), engine section (18) and compressor section (22). Cooling system (27) has inlet (28) for supply of compressed cooling fluid medium (30) to supporting section (13) and engine section (18) through fluid medium pass (29) located between supporting section (13) and engine section (18). Cooling system (27) includes throttle device (31) in the form of a labyrinth seal, which is located near gap (21) of the engine to restrict the flow of cooling fluid medium (30) from pass (29) of fluid medium to engine gap (21).

EFFECT: improvement of efficiency of a turbo-compressor assembly by reduction of recirculation flows.

13 cl, 3 dwg