FIELD: engines and pumps.
SUBSTANCE: pump system 1 comprises electric drive 2 and rotary pump 3. The latter comprises rotary shaft 6 and driven element 8 made up of several vaned impellers 9 fitted on shaft 6 to create working fluid flow. Electric drive 2 comprises stator 10 and rotor 12 fitted on shaft 6 by coupling 13. Stator 10 is arranged nearby rotor 12, inside first casing 14. Rotary pump 4 and rotor 12 are arranged inside second casing 16. First casing 14 contains first working fluid while second casing 16 contains second working fluid 20.
EFFECT: higher environmental safety.
9 cl, 1 dwg
