排灌机械工程学报2024，Vol.42Issue(4)：350-357,8.DOI:10.3969/j.issn.1674-8530.22.0209
叶片安放角对微型轴流式水轮机性能的影响
Influence of blade angles on performance of micro axial flow hydraulic turbine
摘要
Abstract
In order to investigate the influence of blade setting angle on the hydraulic performance of micro axial flow hydraulic turbine,a micro axial flow hydraulic turbine with a specific speed of 548 was chosen as the research object.Without changing other geometric parameters,seven runners with diffe-rent blade setting angles were obtained by offsetting the runner blade.Based on experimental verifica-tion,the influence of blade setting angle on the hydraulic performance of micro axial flow hydraulic tur-bine was analyzed using the computational fluid dynamics technology.The results show that when the blade angle decreases,the head and output of the turbine increase under the same flow rate while the high-efficiency area shifts to the small flow area,and the range of efficient operation of the hydraulic turbine increases to a certain extent.With the increase of the blade setting angle,the head and output of the hydraulic turbine decrease,and the high-efficiency area shifts to the large flow area.The hydrau-lic turbine with an appropriately reduced blade angle can maintain better performance over a wide range of head(flow rate)variations.The highest efficiency of the hydraulic turbine with a placement angle of-4°reaches 82.13%,with the largest range of high-efficiency regions.This study can provide some reference for the design of micro axial flow hydraulic turbine runners.关键词
微型轴流式水轮机/叶片安放角/数值计算/水力性能/高效率区Key words
micro axial flow hydraulic turbine/blade setting angle/numerical calculation/hydraulic performance/high-efficiency zone分类
能源科技引用本文复制引用
杨孙圣,赵尔策,孔祥序..叶片安放角对微型轴流式水轮机性能的影响[J].排灌机械工程学报,2024,42(4):350-357,8.基金项目
国家自然科学基金资助项目(11602097) （11602097）
江苏高校优势学科建设项目 （）
四川省教育厅重大培育项目(18CZ0016) （18CZ0016）
