| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: proposed pump comprises housing with pack of stages 1, 2, 6 made up of impellers 4 and pump diffusers 5 fitted on shaft 3. At least, one stage 2 fitted on pump bottom end comprises magnetic system including two annular permanent magnets 10, 11. Magnet 10 is magnetised axially while magnet 11 is magnetised radially. Said magnetic system comprises outer ferromagnetic case 7, its sizes in match with those of adjacent diffusers 5. Case 7 is provided with top and bottom ferromagnetic covers 8, 9 and internal nonmagnetic tube 12 with channel 13 for shaft and oil passage. ^ EFFECT: expanded operating performances and higher efficiency. |
