Study on the Influence of the Quantity of Grooves on Performance of New Balance Drum
A new type of balance drum with grooves was presented, and analyzed the influence of quantity of grooves on performance of centrifugal pump and balance force by the method of numerical simulation and experiment. The liquid flowing situation at the clearance and the differential pressure on both sides of the balance drum under different quantities of grooves were simulated. The efficiency, quantity of flow and axial force were measured by the experiments with different test devices. After comparing and analyzing the results of simulations and experiments, it indicate that with the increase of grooves the resistance in the clearance increase, the leakage losses reduce, the efficiency of pump enhance and the differential pressure between both sides of the balance drum increase, which contributes to balance the axial force.
H. Q. Lu et al., "Study on the Influence of the Quantity of Grooves on Performance of New Balance Drum", Applied Mechanics and Materials, Vols. 130-134, pp. 1352-1356, 2012