摘要
根据对国内外水电站进水口拦污栅破坏的成因分析,着重分析了动水作用力条件下拦污栅结构的水力特性,包括栅条几何特性、流速、脉动压力等参数变化对脱体旋涡频率、振动横向力的影响,指出斯特劳哈尔数Sr的合理取值范围;还讨论了避免拦污栅发生共振的抗振设计方法。
Based on the cause analysis of the failures of inlet trash rack of hydropower station at home and abroad, this paper analyzes the hydraulic features of trash rack＇ s structure under the condition of dynamic water load, including the effects of some parameter changes such as velocity and pulse pressure on vortex frequency and vibration forces. It also points out the rational value range of Sr and discusses the anti-vlbration design method for avoiding the resonance occurrence of trash rack,
出处
《水力发电》
北大核心
2006年第10期77-79,88,共4页
Water Power
关键词
拦污栅
破坏原因
水力特性
抗振设计方法
trash rack
failure cause
hydraulic feature
anti-vibration design method
