水力发电2017，Vol.43Issue(6)：89-92,4.
滞留气体对水电站引水系统运行稳定性的影响
Influence of Residual Gas on Operating Stability of Water Diversion System for Hydropower Station
摘要
Abstract
The local high point in water conveyance pipeline of hydropower station is easy to form air concentration,and the residual gas will increase the hydraulic loss of pipeline and cause hydraulic exciting vibration,which will endanger the safe operation of water diversion system.Aiming at the hydraulic impact damage of reinforced concrete cover plate of water transfer pipeline branch ditch in a hydropower station,the influence of residual gas in water diversion system on the operation of power station is studied.As the changes of operating conditions of units,the residual gas in pipeline will spread to upstream and form a water hammer that is the main cause of damage of upstream building.In the case of a hydropower station with a local high point in water conveyance pipeline,a fixed venting device shall be provided in engineering design when the Froude number is less than critical Froude number.关键词
水电站/引水系统/运行稳定性/滞留气体Key words
hydropower station/diversion system/operation stability/residual gas分类
建筑与水利引用本文复制引用
李小芹,孟利平,李浦,蔡正华,刘建伟,王福军..滞留气体对水电站引水系统运行稳定性的影响[J].水力发电,2017,43(6):89-92,4.基金项目
国家自然基金重点项目(51139007) （51139007）
