DISPERSER OF SUBMERSIBLE CENTRIFUGAL PUMPING UNIT Russian patent published in 2002 - IPC

FIELD: oil producing industry; submersible centrifugal pumping units. SUBSTANCE: proposed disperser of pumping unit has housing accommodating at least two stages in form of working wheels with blades and guide vane assemblies. At least one of stages is pressure-head type providing liquid head. At least one of stages is made in form of mixing type providing mixing of liquid and creating head of liquid less than head built by stage of pressure-head type. Outer diameter of blades of mixing-type stage wheel is greater than diameter of driving disk of said working wheel. Outer diameter of vanes of guide vane assembly of mixing stage is greater than diameter of lower disk of said guide vane assembly. EFFECT: provision of stable operation of pumps in wells with high content of dissolved gas, reduced number of pump failures caused by stalling. 10 cl, 10 dwg