摘要
水轮发电机组部分负荷时，尾水管压力脉动是反映水轮机水力稳定性的重要指标．这种压力脉动的允许值方案，也说明了用△H／H判断原型水轮机的振动稳定性的局限性和不确定性，还提出了在进行模型水轮机验收试验及利用本方案进行稳定性评价时需注意的问题．
The Pressure fluctuation induced by the vortex band in the draft rube at the partial load conditions is an important hydraulic stability specification of the turbines. The paper proposes two preliminary criteria for the pressure fluctuation, explains the limitation and uncertainty when using △H/H to evaluate the level of vibration and stability for the prototype turbines, and puts forward some problems to which special attentions should be paid during the model turbine acceptance lest when using the criteria to evaluate the hydraulic stability.
出处
《水利水电技术》
CSCD
北大核心
1996年第3期27-30,共4页
Water Resources and Hydropower Engineering
关键词
水轮机
尾水管
涡带压力脉动
稳定性
turbine, vortex band pressure fluctuation, allowance
