Method of selection of centrifugal submersible pumps type ECV

Presents the main stages of the computerization of the selection of centrifugal borehole pumps ECV. Despite the broad, widespread use of centrifugal borehole pumps, no empirical formula for operational, engineering methods, to calculate the operating points of the pumping unit in such systems. The comparison of calculation results with experimental data test pumps. The polynomial approximation of third order is much better corresponds to the experimental points. Presents the results of calculating operational characteristics of the pump employed in the system supply piping.