CENTRIFUGAL PUMP RUNNER Russian patent published in 2017 - IPC F04D29/22 F04D7/04 F04D13/10 

FIELD: engines and pumps.

SUBSTANCE: invention refers to the pump engineering and may be used during construction of submerged pumps for the lifting of liquids with mechanical impurities from wells. The centrifugal pump runner contains a cover and an impeller with curvilinear blades (1, 2, 3, 4) installed with the formation of alternating flow-through interblade channels (13, 14) and non-flow-through interblade channels (15, 16). In each of the non-flow-through interblade channels (15, 16), two baffles are secured, (5, 6) and (7, 8), of which (5, 7) are internal, and (6, 8) are external, i.e. located on the different distances relatively to the center of the impeller hub. The internal baffle (5) is performed solid and connected to the pair of neighbor baffles (2, 3) by its edges; the internal baffle (7) is performed solid and connected to the pair of neighbor baffles (1, 4) by its edges. The external baffle (6) is connected to one blade (2) of the neighbor ones (2, 3) forming the peripheral hole (17) with another blade (3) on one side on the non-flow-through interblade channel (15). The external baffle (8) is connected to one blade (4) of the neighbor ones (1, 4) forming the peripheral hole (18) with another blade (1) on one side on the non-flow-through interblade channel (16).

EFFECT: invention is directed to prevention of rapid wear, unbalancing, and blocking of the runner with mechanical impurities, reduction and stabilization of power supply by a drive motor within the limits of its available capacity, and provision of the possibility for successful operation of marginal petroleum and other wells.

6 cl, 4 dwg