| 摘要 |
FIELD: engines and pumps. ^ SUBSTANCE: invention is related to pump engineering. Pump comprises body 1 with suction and discharge tracks 2, 3, shaft 4 with two groups of impellers 5 installed in it, rotor 6 of electric motor 7 and fifth 8, sliding support 9 and guide vanes 10. Body 1 is made in the form of three-layer tubular structure that consists of concentrically installed external, internal and middle pipes 11-13, which create suction and discharge tracks 2, 3 separated by wall 14, and also annular cavity 15. Cavity 15 communicates with both groups of impellers 5, which are installed at opposite sides from electric motor 7, which is installed in central part of pump. In discharge track 3 and/or annular cavity 15 there are dampers installed, which are made in the form of multi-channel system comprising channels 16 formed by blades 17. Channels 16 have inlet confusor sections of not more than 30 and outlet diffuser sections of not more than 810. Stator 18 of electric motor 7 and sliding support 9 are installed in cavity of internal pipe 12. ^ EFFECT: higher efficiency of pump, improvement of its vibroacoustic properties, service conditions, repairability, provision of simplicity and convenience of assembly and disassembly. ^ 2 cl, 3 dwg |
