FIELD: machine building.
SUBSTANCE: multistage turbomachine (1) is provided comprising body (3) with fluid inlet (5) and outlet (7) for the fluid and several stages (13A, 13B) located in housing (3). Flow passage extends from the fluid inlet (5) to fluid outlet (7) through said series-arranged steps (13A, 13B). Each stage consists of rotating impeller (17A, 17B) and an electric motor built into casing (3) and rotatable impeller (17A, 17B) with a controlled rotational speed. Each motor comprises rotor (31A, 31B) disposed on impeller (17A, 17B) and rotating with it as a whole, and stator (33A, 33B), fixedly located in body (3).
EFFECT: pairs of successively located impellers are rotatable in opposite directions.
24 cl, 22 dwg
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