水电站机电技术2024，Vol.47Issue(7)：1-6,6.DOI:10.13599/j.cnki.11-5130.2024.07.001
水泵水轮机水泵工况顶盖下腔特殊压力脉动模型试验研究
A model test study on special pressure pulsation in lower cavities of head covers of pump-turbines under pump conditions
林方舟 1王秀玲 1管子武 1胡江艺 1梁权伟1
作者信息
- 1. 东方电气集团东方电机有限公司,四川 德阳 618000
- 折叠
摘要
Abstract
With the accelerated construction of pumped-storage power plants,high-head and large-capacity pumped-storage units have gradually become the mainstream in development.During the operation of some high-head and large-capacity pumped-storage units under pump conditions,pressure pulsation with special frequency was detected in the lower cavities of head covers,which has attracted wide attention in the industry.In order to further reveal the underlying mechanisms of this phenomenon,a model test study on the special frequency of the lower cavities of head covers was conducted by altering the flow regimes in channels using a disturbing method.The test results show that the pressure pulsation in the lower cavities of head covers and vaneless zones is changed by disturbing the flow regimes in vaneless zones,and the amplitude and area of special frequency are decreased.The special frequency pressure pulsation in the lower cavities of head covers under pump conditions is mainly affected by the flow regimes in vaneless zones,and less affected by the flow fields in the lower cavities of head covers.关键词
水泵水轮机/特殊压力脉动/顶盖下腔/模型试验/无叶区流态Key words
pump-turbine/special pressure pulsation/lower cavity of head cover/model test/flow regime in vaneless zone分类
水利科学引用本文复制引用
林方舟,王秀玲,管子武,胡江艺,梁权伟..水泵水轮机水泵工况顶盖下腔特殊压力脉动模型试验研究[J].水电站机电技术,2024,47(7):1-6,6.
