摘要
以泉杜泵站为例,从水泵启动时出现的异常现象入手,分析了大型、高扬程泵站3种不同的水泵启动工况,分析结果表明:全充水工况和半充水工况下,气泡导致的破坏是水泵启动的主要障碍,必须彻底解决排气问题;无水工况是水泵启动的最不利工况,易形成"气锤",产生附加扬程;无水工况下,可采用本文的算法在水泵启动前部分打开出水闸阀,以消除附加扬程。
The Quandu Pump Station is chosen as an example to analyze the three transient processes of high-lift centrifugal pumps.The results show： the remaining air in the pump and pipeline is the main obstacle for the water-filling and the half-capacity conditions;air release is necessary to avoid destruction;under full-capacity conditions,air-hammers always appear and additional head increases;the additional head can be avoided by partially opening the valve before the start-up of the pump.
出处
《中国农村水利水电》
北大核心
2011年第5期139-140,144,共3页
China Rural Water and Hydropower
关键词
泵站
水泵
气锤
附加扬程
pump station
pump
air hammer
additional head
