FIELD: pumps.
SUBSTANCE: invention relates to electric submersible centrifugal pumps for extraction of high viscous fluids used in oil industry. Pump includes stages, each of which consists of an impeller with drive disc and spiral blades and guide vanes. Forming blade profiles are made in form of Archimedean spirals with zero point on polar beam directed from wheel axis. Limiting surface of guide apparatus of a flow area of pump. Section of channels formed by spiral blades remains constant throughout entire length.
EFFECT: higher reliability due to improved performance pump during operation on high-viscosity fluids.
1 cl, 6 dwg
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