摘要
为解决水轮发电机组在优化设计中出现的技术矛盾,改善机组的各项性能,在对某混流式水轮发电机组进行优化设计时,为解决机组堵塞严重的问题,同时让机组在优化设计前后流场、效率以及出力等参数基本保持在设计值,提出了减少叶片数量的方案,分析了减少叶片数量会导致恶化的参数类型,以TRIZ发明原理的推荐方案为指导原则构建技术矛盾关系,并提出了降低活动导叶高度和增大叶片表面积等优化措施,对全流道进行CFD数值计算和现场实测两个方面验证改造效果。结果显示,改造后机组的流态良好,堵塞频率显著下降,且效率和出力均达到了预期水平,为后续机组的进一步优化设计提供了参考依据。
The primary goal of this research was to solve the technical contradiction in the process of Francis turbine optimum design.The pa⁃per took the Francis turbine as an example,in order to solve the problem of serious congestion and keep the good performance of turbine.We proposed to reduce the number of blades and analyzed to reduce the number of blade that could lead some parameters deterioration.And then the paper built the conflict matrix based the TRIZ.According to the guiding principles of TRIZ,we used the lower height guide vanes and en⁃larged blade area.At last,we did the simulation by CFD and site tests for verified the effectiveness and output.In conclusion,the results show that the improved turbine has a good performance.It has provided a reference for the future optimum design.
作者
王旭
陈荣盛
卢磊
WANG Xu;CHEN Rongsheng;LU Lei(Chengdu College of University of Electronic Science and Technology of China,Chengdu 611731,China;Chengdu Hydroelectric Investigation&Design Institute of SPC,Chengdu 610000,China;Yingxiuwan General Hydropower Plant,Dujiangyan 611830,China)
出处
《人民黄河》
CAS
北大核心
2020年第10期152-156,共5页
Yellow River
基金
四川省教育厅自然科学项目(14ZB0385)。
