DOWNHOLE PUMPING UNIT Russian patent published in 2020 - IPC F04B1/04 

FIELD: pumps.

SUBSTANCE: technical result in a pump unit comprising a pump, an inlet module, a gas separator and an electric motor with a hydraulic protection, is solved by the fact that the pump is radial-plunger, and the axial channel of its shaft is through, wherein from one shaft end fluid enters the channel through the inlet valve, and from the other one comes out of it through the outlet valve, wherein the valve seats are made in the form of a bushing with conical grooves for the locking elements, and in the conical grooves there are radial holes for liquid passage, besides, the locking elements are made in the form of elastic rings.

EFFECT: invention is aimed at obtaining technical result, which is manifested in improvement of energy efficiency of pumping units.

1 cl, 7 dwg