Abstract
Repair of centrifugal oil pumps requires their total tear-down, with removal of steel parts from the cylindrical housing made of thick-walled steel tubes. This paper describes the technology of removal of steel parts from the tube using an air-driven hammer with a piston of relatively small weight of 40 kg. The complete tear-down of the deep-well centrifugal pump is implemented using a facility with a guiding frame. The frame accommodates the mutually appressed air-driven hammer, a nozzle with a conical seating surface, a tube section with a side window and a stepped flange adaptor. The latter is pressed to the end face of the pump housing. The other end of the housing is butted on the energy sink fastened on the guiding frame. The described facility has a rod passed through the open end hole in the energy sink and along the opening of the housing, which interacts with the parts in the housing via one end and with the drive via the other end.
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