FIELD: engines and pumps.
SUBSTANCE: proposed stage comprises impeller, diffuser and at least one disperser. The latter is driven by pump shaft and arranged in the stage flow section, right between the impeller upper plate and diffuser lower plate. Note here that the disperser comprises at least two lines of radial blades. Note also that midlines of the blades in every line are located between those of the other blades in other lines in axial projection.
EFFECT: increased maximum amount of free gas at pump inlet without notable decrease in efficiency, delivery and axial size of stage and pump.
4 cl, 3 dwg
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RU2508474C1 |
