| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention refers to pump engineering and concerns an inclined-rotor stage design of a multistage pump for oil and other fluid production. A pump stage comprises disk 1 rotor and starter 6. Disk 1 is provided with pump intake 2, blades 3, closed-type blade channels of a centrifugal wheel and ring socket with blades 5 mounted inside. Starter 6 has input 7 and output 8, and free annular channel 9 opposed to the ring socket with blades 5 to form a peripheral part of the stage with air intake 10 and pump discharge 11. Besides, starter 6 comprises collection chamber 12 connecting pumping zone 13 of a centrifugal part of the stage formed by the centrifugal wheel and starter 6, and the air intake of the peripheral part of the stage. Pump intake 2 of the centrifugal parts of the stage and the ring socket with in-built blades 5 of the peripheral part of the stage are provided from side opposites of disk 1. Free annular channel 9 is equipped with a divider. Collection chamber 12 and output 8 of the stage are annular, while pump discharge 11 is axial. The air intake of the peripheral part of the stage and the output are aligned from periphery to the centre. ^ EFFECT: invention aims at production of a packaged effective stage with high efficiency, generating high pressure. ^ 3 cl, 4 dwg |
