FIELD: oil industry; mechanical engineering. SUBSTANCE: invention relates to multistage pumps designed for pumping out formation fluids. Stage of proposed oil well centrifugal pump has guide vane assembly and impeller. cavities are made on upper surface of impeller driving disk. Cavities are open from upper and outer side surfaces of driving disk. Blade of impeller are arranged on lower surface of driving disk. Impeller is made open from lower side. Ribs are arranged on upper surface of upper disk of guide vane assembly. Grooves formed by said ribs are from side of upper borders of said ribs. EFFECT: reduced wear of members, increased stability in operation, efficiency and head of stage. 3 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| CENTRIFUGAL OIL-WELL PUMP STAGE | 2001 |
|
RU2196253C1 |
| STAGE OF OIL-WELL MULTI-STAGE CENTRIFUGAL PUMP | 2001 |
|
RU2196252C2 |
| STAGE OF SUBMERSIBLE CENTRIFUGAL PUMP | 2001 |
|
RU2192561C1 |
| IMPELLER OF CENTRIFUGAL MULTI-STAGE PUMP | 2001 |
|
RU2196257C2 |
| STAGE OF OIL-WELL MULTISTAGE PUMP | 2001 |
|
RU2201533C2 |
| CENTRIFUGAL MULTI-STAGE PUMP IMPELLER | 2001 |
|
RU2196255C2 |
| CENTRIFUGAL MULTI-STAGE PUMP IMPELLER | 2001 |
|
RU2196256C2 |
| STAGE OF MULTISTAGE SUBMERSIBLE CENTRIFUGAL PUMP | 2001 |
|
RU2209345C2 |
| STGE OF MULTISTAGE SBMERSIBLE CENTRIFUGAL OIL-WELLPUMP | 2001 |
|
RU2209346C2 |
| DISPERSING MULTISTAGE ROTARY PUMP | 2012 |
|
RU2508474C1 |
