| 摘要 |
FIELD: oil producing industry; hydraulic machine building. ^ SUBSTANCE: invention can be used in submersible centrifugal pumps designed for lifting oil with high content of gas in formation fluid. Proposed stage of submersible multistage centrifugal pump contains impeller 1 with bushing 2, and guide-vane assembly 3 consisting of cup 4, upper disk 5, bushing 6, lower disk 7 and vanes 8. Impeller 1 with bushing 2 are made of plastics. Vanes 8 and bushing 6 are arranged on separate face plate 9 secured on upper disk 5, and lower disk 7 is made in form of cover. Face plate 9, vanes 8 and lower disk 7 are made of plastics. ^ EFFECT: reduced cost, improved wear resistance, increased service life. ^ 2 cl, 1 dwg |
