CRUDE BOOSTER PUMP AND CRUDE BOOSTER PUMP IMPELLER Russian patent published in 2014 - IPC F04D1/00 F04D29/22 F04D29/44 

FIELD: engines and pumps.

SUBSTANCE: horizontal single-stage pump comprises a housing, double-flow impeller and a guiding device. Covering disks of the impeller are joined to the base disk by the systems of spatially spiral vanes. The vanes are spaced along the circle with forming by adjacent vanes in each of the named systems of spirally twisted vane channels. A pressure head surface and medium conditional surface of the impeller vane are formed by spatial movement of single-curved generatrix from the inlet to outlet from the vane channel with an angle of vane entering into a flow, with the varying towards outlet spatial curvature gradient, preset in projections to two mutually perpendicular conditional planes. The impeller vanes systems are shifted in the rotation plane to the angle no less than half of projection of skewed outlet blade end to a conditional medium plane of the base disk. The guiding device is fitted with curvilinear vanes, the number of which exceeds the number of impeller vanes. The device vanes are deflected towards the flow vector in the branch pipe to a certain angle, and the vane channel is implemented as extending towards outlet.

EFFECT: improvement of pump characteristics, decrease of vibration radial loads and improvement of efficiency, reliability and resource.

14 cl, 9 dwg