DEVICE FOR REMOVING PARTS FROM THE HOUSING OF A MULTI-STAGE SUBMERSIBLE CENTRIFUGAL PUMP Russian patent published in 2021 - IPC F04D29/62 F04D13/10 

FIELD: petroleum engineering.

SUBSTANCE: invention relates to petroleum engineering and is intended for disassembly of multi-stage submersible centrifugal pumps used for pumping reservoir fluid from wells during oil production. The device contains a guide frame on which a pneumatic hammer, a nozzle with conical landing surfaces, a pipe segment with a side window pressed against each other, a stepped flange pressed against the end of the specified housing are installed sequentially. The housing is pressed against the energy absorber mounted on the guide frame with the other end. The device is equipped with a rod installed in the through hole of the energy absorber and in the hole of the housing with the possibility of interaction with one end with the parts in it, and the other end of the rod connected to the drive.

EFFECT: in addition to the gravitational action, an axial static force is applied to the extracted parts in the direction opposite to the impact.

4 cl, 4 dwg