The patrol inspection of the water pump of the heating pump station was carried out in an orderly manner. When the patrol inspection was conducted to the first network heat pump station of Tianbao new town of Zhangbei Huaying Thermal Power Co., Ltd., it was found that the water pump was operating at a relatively large flow point, with a flow rate of 99m3 / h and a lift of 9.3m. At this time, the efficiency of the water pump was only 34.2%. Our technical personnel immediately made a decision to transform the pump and matched the high-efficiency and energy-saving pump kqw125 / 125-15 / 2. After the technical transformation, a single heating season can save users 10200 yuan, and the purchase cost can be recovered after the pump runs for 90 days. The energy-saving benefit is very considerable. Through technical transformation, the average power saving rate of Tianbao new town first network of Zhangbei Huaying Thermal Power Co., Ltd. can be ≥ 49%; According to the calculation that the water pump operates for 150 days a year, the pump 1 # of the pump house operates for 3600h a year, saving 13700 kwh of electricity every year, and the annual electricity saving income is about 8900 yuan (the electricity charge is calculated as 0.65 yuan / kWh excluding tax).