| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: unit includes housings 10, 22, 23, 26, centrifugal screw pump, screw 14 and turbine 2. Pump includes centrifugal impeller 4 with hub 5 having inner cavity 32, and installed on outer shaft 3 which is installed in bearing 7 protected with seal 45. Turbine 2 includes two stages 15, 16 with guide vanes 21, 22 and impellers 17, 18. Inner shaft 11 is installed inside shaft 3 on bearings 12, 13. Turbine 2 is birotary. Impellers 17, 18 of turbine 2 are installed on outer and inner shafts 3, 9 respectively, and screw 14 is installed on outer shaft 3. ^ EFFECT: improving cavitation properties of pump included in turbo-pump unit, and removing axial forces from inner and outer shafts. ^ 3 cl, 6 dwg |
