FIELD: pumps.
SUBSTANCE: invention relates to pump engineering, mainly to production of multi-stage electric submersible centrifugal and semi-axial pumps for oil production. Impeller of vane pump stage comprises main disc (1) with hub (2) and cover disc (3), between which there are curvilinear blades (4) forming inter-blade channels (5). Each channel (5) is made in the form of a cone-shaped diffuser having an oval cross-section, mainly an oval-ellipse-oval. Inlets into channels (5) and outlets therefrom are made in the form of quadrangles with parallel opposite sides, and end areas of channels (5), where transition occurs from quadrangular cross-section to oval shape, at inlet of channels (5), and from oval section to quadrangular, at outlet of channels (5), smoothly mate with inner area of channel (5).
EFFECT: invention is aimed at reduction of hydraulic resistance of impeller and hydraulic losses in it by 2÷5 %.
1 cl, 2 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| STAGE OF MULTISTAGE VANE PUMP | 2020 |
|
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| PUMP | 0 |
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| AXIAL-FLOW PUMP | 0 |
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SU1751416A1 |
| CENTRIFUGAL PUMP STAGE | 2018 |
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| MULTISTAGE MULTIPHASE PUMP (VERSIONS) AND METHOD OF PUMPING GAS-LIQUID MIXTURE USING IT | 2023 |
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RU2823419C1 |
