SUBMERSIBLE OIL-FILLED MOTOR OF OIL-WELL CENTRIFUGAL PUMP WITH ADJUSTABLE AXIAL SUPPORT Russian patent published in 2008 - IPC F04D13/10 F04D29/46 H02K5/167 

FIELD: mechanical engineering; oil machinery.

SUBSTANCE: proposed submersible electric motor has axial support consisting of step secured on shaft and step bearing with upper, central and lower members, inner base member whose inner surface encloses at least pert of upper member of step bearing, and elastic ring enclosing side surface of upper member. Cavity is made on lower surface of upper member which accommodates upper part of central member. Cavity is made on upper surface of lower member which accommodates lower part of central member of step bearing. Upper member of step bearing rests on central member. Axial support is made for axial displacement with subsequent fixing in working position. Lower and upper members of step bearing are secured to prevent rotation relative to shaft axis. Projecting part of elastic ring is pressed to inner surface of inner base member. Central member is made and arranged to provide parallelism of working surfaces of step bearing and step at angular displacements of axis of electric motor shaft.

EFFECT: improved reliability of axial support of electric motor to create flexible system for adjustment of position of axial support.

11 cl, 2 dwg