SUBMERSIBLE PUMP PLANT WITH OPEN LINEAR ELECTRIC MOTOR Russian patent published in 2014 - IPC F04B47/06 F04B17/04 

FIELD: machine building.

SUBSTANCE: plant comprises a linear electric motor and a pump with reciprocating travelling of a working member (plunger, piston) coupled with the moving part of the electric motor (runner). The cavity of the electric motor stator with winding is sealed. The cavity of the electric motor formed by the stator, casing and runner is filled with liquid. The runner is installed in supporting elements set in the stator. The plant is equipped by end shields between the cavities of the pump and the electric motor, units for protection of the electric motor cavity against mechanical impurities, and filters characterized as fine filters. The filters are mounted in the electric motor casing between the stator and the end shields, the external surface of the end shields is closely connected to the casing and the internal surface of the end shields is in mechanical contact with the runner surface through the units for protection of the electric motor cavity against mechanical impurities.

EFFECT: service life of a plant is prolonged due to improved operation conditions of supporting units.

2 cl, 1 dwg