ELECTRIC CENTRIFUGAL PUMPING UNIT Russian patent published in 2023 - IPC F04D13/10 

FIELD: electric centrifugal pumping units.

SUBSTANCE: invention relates to electric centrifugal pumping units intended for oil extraction from wells. The electric centrifugal pumping unit (ECPU) contains modules of an electric motor, hydraulic protection, a pump, a cable line, a remote cable connection point, a drain valve, a check valve, a gas separator, tubing, wellhead equipment, a complete transformer device and a device for connecting modules in the form of a damper - anchors, consisting of a body - a differential cylinder with longitudinal windows, support levers with slips, an elastic substrate and a differential piston. The elastic substrate of the device for connecting the modules is installed on the differential piston and is made in the form of a cylindrical sleeve with one end resting on the annular protrusion of the piston of a larger diameter, and the other end on the annular surface of the internal stepped transition of the differential cylinder to the piston of a smaller diameter, the differential cylinder being made separately from the body and is fixedly fixed in it, equipped with limiters-regulators of the working stroke of the differential piston and longitudinal windows in which the support levers are installed, one end of each support lever is connected with the differential cylinder by means of a rotational kinematic pair, and the free end is provided with a radial displacement margin for the output of the slip heads by the estimated value outside the body through its longitudinal windows.

EFFECT: invention is aimed at increasing the durability and performance of the ECPU by damping the spatial vibration loads and impacts of the submersible unit on the casing, reducing the amplitude of its oscillations.

1 cl, 2 dwg