| 摘要 |
The pump (10) for the drawing-in of a fluid, comprises at least one centrifugal wheel (14) having a fluid inlet edge (48) and a fluid outlet edge (44), the pump further comprising an axial balancing system (32) comprising a high-pressure flow space (34) defined between the housing and an upstream face (36) of the centrifugal wheel (14) in addition to a low-pressure flow space (38) between the wheel and the housing. The axial balancing system (32) further comprises means (52) for substantially increasing the hydrostatic pressure of the fluid circulating in the high-pressure flow space (34) during operation of the pump (10) by the provision of radially directed vanes (52) to reduce non-radial flow and thus dynamic pressure of the fluid. |
