During the patrol inspection of Yuantong Huasheng Thermal Power Co., Ltd., Kaiquan found that the water pump of each heat exchange station was operating under abnormal conditions, with potential safety hazards and low efficiency. After the patrol inspection and maintenance of the heating water pump, the technicians of Kaiquan carried out energy-saving transformation on the low efficiency water pump on the site, and replaced the old pump on the site with the sixth generation high-efficiency single-stage single suction pump of Kaiquan. It not only eliminates the hidden danger of water pump operation for users, but also reduces the heating cost, which has been praised by users. Through technical transformation of 7 heating pumps, the average power saving rate of each heat exchange station of Yuantong Huasheng Thermal Power Co., Ltd. can be ≥ 21.4%; If the water pump is operated for 150 days every year, 3600h will be operated every year, 336000 kwh of electricity will be saved every year, and the annual electricity saving income is about 218000 yuan (the electricity fee is calculated as 0.65 yuan / kWh excluding tax).