水轮机尾水管水压力脉动与运行工况的关系  

The Relations between the Operating Condition and Pressure Fluctuation in Draft Tube of Francis Turbine

作　　者：吴钢[1] 韦彩新[1] 张克危 宋立人[2] 

机构地区：[1]华中理工大学动力工程系 [2]中国长江三峡工程开发总公司

出　　处：《华中理工大学学报》1998年第11期88-91,共4页Journal of Huazhong University of Science and Technology

基　　金：国家"九五"攀登计划预选资助

摘　　要：以三峡水电站水轮机运行工况为模拟条件，进行了混流式水轮机尾水管压力脉动试验研究；分析了在水头变幅较大的工况下混流式水轮机尾水管水压力脉动与转轮出口水流环量及单位参数之间的关系．研究结果表明，适当选定混流式水轮机额定参数对减轻尾水管水压力脉动是十分有效的．The relations between the pressure fluctuation in the draft tube of Francis turbine and the runner exit circulation, and the unit parameters are analyzed based on fluid mechanics theory. The experiments on the pressure fluctuation in the draft tube are carried out under the simulating operating condition of the Three Gorges water turbine. The research shows that it is extremely effective to select reasonable operation conditions of a Francis turbine for suppressing the pressure fluctuation in the draft tube of the turbine.

关 键 词：水轮机 尾水管 水压力脉动 运行工况 

分 类 号：TK730.314[交通运输工程—轮机工程]