FIELD: gas-and-oil producing industry. SUBSTANCE: gas separator of centrifugal oil-well pump has body with suction openings and shaft. Gas separator has member whose flow part area reduces in axial direction from inlet to outlet. Installed in body is screw conveyer and devices for discharge of liquid and gaseous phases and divider. Separator has separating screw conveyer installed on shaft with radial clearance to body and separating disc installed in inlet of divider with radial clearance to body and shaft. Member whose flow part reduces axial direction from inlet to outlet is made in the form of screw conveyer housing. Divider is made in the form of thin-walled cylinder. Screw conveyer is installed with a clearance to its housing. Separating screw conveyer is installed between screw conveyer housing and divider. Screw flights at outlet have an angle of inclination less than 90 deg. Flights of separating screw conveyer along entire length have an acute angle of inclination to plane perpendicular to axis of its rotation. Outer diameter of dividing disc is larger than diameter of inlet of screw housing. EFFECT: higher reliability of operation. 1 dwg
