SECTIONED PUMP WITH ARTICULATION JOINT Russian patent published in 2000 - IPC

FIELD: pump manufacture, possibly submersible centrifugal pumps for oil production and pumping out water from inclined and curved wells. SUBSTANCE: in sectioned submersible centrifugal pump lower end of its upper section is provided with spherical member and upper end of lower section - with spherical seat. Outlet end of shaft of upper section is joined with outlet end of shaft of lower section by means of toothed clutch having yoke with straight teeth on inner surface and barrel-like head with outer teeth engaged with said yoke. Clutch is joined with outlet shafts of adjacent sections by means of spline joints. EFFECT: enhanced freedom degree of articulation joint of shafts of pump sections relative to lengthwise axis of pump. 1 dwg