摘要
针对50 MW汽轮机组锅炉给水泵扬程富裕过高,引起锅炉给水电耗率高的问题,提出给水泵换型、电机变频调节和抽掉给水泵一级叶轮3种改造方案,通过对比分析,选用抽掉给水泵一级叶轮的改造方案。减一级叶轮后,给水泵电耗率由6.17 kW·h/t降至5.45 kW·h/t,经济效果显著。
The feed water pump for the 50 MW steam boiler has a high head of delivery, causing high power consumption. By comparative analysis of three retrofit schemes which are the pump type replacement, motor frequency conversion regulation and removing primary impeller of feed water pump, the third retroift scheme has been selected. After impeller-saving transformation, the feed water pump can reduce power consumption from 6.17 kW?h/t to 5.45 kW?h/t, resulting in a remarkable economic beneift.
关键词
给水泵
叶轮改造
节能
feed pump
reconstruction of impeller
energy-saving
