排灌机械工程学报Issue(1)：32-37,44,7.DOI:10.3969/j.issn.1674-8530.15.0065
乌江构皮滩水电机组水力稳定性试验研究
Experiment on hydraulic stability of hydro-turbines in Goupitan hydropower plant on Wu River
摘要
Abstract
A series of field experiments are carried out on hydro-turbine unit 1 and unit 5,respective-ly,in Goupitan hydropower plant to solve the problems such as too large vibration acceleration in unit 1,vibration and hydraulic instability in unit 5 at high flow rates.In the prototype experiments,an ad-vanced data acquisition software LabVIEW and a testing program proposed by NI Hardware are adopt-ed.The experimental results are processed and the reasons for the instability are inferred;subsequent-ly,several measures are proposed,implemented and validated experimentally.It is confirmed that for unit 1 once the runner nut is changed into a cone from the original cylinder the severe pressure pulsa-tion phenomenon disappears at high flow rates.For unit 5,however,even though the thickness of the trailing edge of wicket gate foils has been reduced,the severe pressure pulsation also persists,sugges-ting Karman vortex street is irresponsible for this effect.This outcome has a referential significance for safe operation of hydro-turbine units in a hydropower plant.关键词
水电机组/水力稳定性/振动/大流量/构皮滩/试验分析Key words
hydro-turbine unit/hydraulic stability/vibration/high flow rates/Goupitan/experimental analysis分类
信息技术与安全科学引用本文复制引用
宫汝志,李德友,王洪杰,刘世勋,魏显著..乌江构皮滩水电机组水力稳定性试验研究[J].排灌机械工程学报,2016,(1):32-37,44,7.基金项目
“十二五”国家科技支撑计划项目 （）
