转桨式水轮机边界负荷区运行异常处理及经验启示  

Treatment and Experience of Abnormal Operation in Boundary Load Zone of Kaplan Turbine

作　　者：覃杰 吴红光 QIN Jie;WU Hongguang(Wuling Power Corporation Ltd.,Changsha 410029,China)

机构地区：[1]五凌电力有限公司,湖南长沙410029

出　　处：《红水河》2023年第3期153-157,共5页Hongshui River

摘　　要：针对某转桨式水轮机低负荷区运行异常问题,经排查分析得知,其转轮叶片接力器的反馈开度存在偏差,该偏差是导致水轮机运行稳定性恶化的根源。在上述问题处理的基础上,笔者从水力因素方面,论证转桨式水轮机接力器反馈开度的偏差对转轮叶片安放角和水流入流角的影响,阐述其造成水轮机在不同工况下稳定性发生变化的机理,并对转桨式水轮机的检修维护及协联关系优化提出建议,为分析解决水轮机边界运行区的稳定性问题提供一种思路。In view of the abnormal operation of a Kaplan turbine in the low load area,through investigation and analysis,it is found that there is a deviation in the feedback opening of the runner blade servomotor,which is the root cause of the deterioration of the operation stability of the turbine.On the basis of dealing with the above problems,the authors demonstrate the influence of the deviation of the feedback opening of the servomotor on the setting angle of the runner blade and the inflow angle of the water flow from the aspect of hydraulic factors,expound the mechanism of the change of the stability of the turbine under different working conditions,and put forward some suggestions on the maintenance and optimization of the association relationship of the turbine,which provides a way of thinking for analyzing and solving the stability problem of the boundary operation area of the turbine.

关 键 词：转桨式水轮机 负荷 开度 运行稳定性 

分 类 号：TK733.5[交通运输工程—轮机工程]