自1963年江都第一抽水站建成以后,全国各地相继兴建了许多大型虹吸式轴流泵站.其中绝大多数泵站由于扬程变幅较大,流道驼峰相对位置较高,投产后普遍反映水泵在启动过程中,会产生强烈的振动和噪音(在水泵叶轮外壳附近,可听到水泵内部有比正常运行时严重 Since the completion of Jiangdu No.1 Pumping Station in 1963, many large-scale siphon-type axial-flow pumping stations have been built in succession all over the country, most of which are relatively large due to the large head lift and high relative position of flow passage humps, which are generally reflected after put into production During start-up, the pump generates strong vibrations and noises (near the pump impeller housing, it is possible to hear that the inside of the pump is worse than normal