针对某工程空调水系统调试中发现的冷却水泵匹配电机偏小的问题,经计算分析认为,降低水泵扬程3~4 m可以保证水泵安全运行,采用切割叶轮的方法,三次调整叶轮切割尺寸,得到合适的叶轮直径。测试参数表明,调整后的水泵流量、扬程和电机功率满足工程需要。 Aiming at the problem that the cooling water pump matching motor is too small found in the commissioning of an air-conditioning water system of an engineering project, the calculation and analysis show that reducing the head of the water pump by 3-4 m can ensure the safe operation of the water pump. By cutting the impeller, the cutting size of the impeller can be adjusted three times Appropriate impeller diameter. Test parameters show that the adjusted pump flow, lift and motor power to meet engineering needs.