Abstract: To improve the efficiency of circulating water pump during the operation, by means of the CFD software, this article analyses the pressure and velocity distribution of the blade of the pump, proposes a reconstruction scheme of the pump, and studies the operation situation of the scheme in a 330 MW unit. The result shows that the scheme can effectively improve the pressure and velocity distribution of the blade,increase the efficiency of the pump,reduce the power consumption. The power consumption of the pump depressed 0.3663 million kW·h, while the benefit is about 0.1758 million yuan each year ofer the programnce was implemented.

Key words: circulating water pump, efficiency, power consumption, benefit