«Equipment and technologies for oil and gas complex»

Numerical studies of the operation of stages of electrically driven impeller pumps using the example of a stage with a nominal flow rate of 40 m3/day

UDC: 622.276.53
DOI: -

Authors:

¹ National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: compact installation, blade pump stage, open centrifugal wheel, axial force, numerical experiment, "impeller" buoyancy, guide apparatus

Annotation:

The paper describes numerical studies of the operation of 2A-sized stages using open centrifugal impellers as an example. The effect of the clearance between the guide apparatus and the impeller on the efficiency of the stage is shown. The axial force acting on the impeller depending on the pump head and flow rate has been numerically calculated. The characteristics of an open 2A-sized stage have been obtained depending on the rotation frequency of the drive shaft and the viscosity of the pumped medium. The characteristics obtained from numerical experiments were compared with the results of physical studies, showing satisfactory agreement. The values of the axial force occurring on the impeller have been calculated depending on the rotational speed of the drive shaft and the viscosity of the pumped medium. Open-type impellers can be used to pump well products that fall into the category of high viscosity (up to 10 cP). An increase in viscosity in the range of 1…10 cP leads to a reduction of axial force on the impeller without causing it to "float" around nominal flow rates.

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