The hydraulic turbine unit frequently operates under the lowwaterhead, exists the questions of unstable operation and cavitation in Mania hydropower station.
满拉水电站水比机组经常处在低负荷下运行，存在着局部空蚀破坏和运行不稳定两大问题。
2
Low applicable head, high flow and high efficiency characterize bulb type tubular turbine unit. These kinds of units are widely used for the development of low-headwater resources.
灯泡贯流式机组具有适用水头低、流量大以及效率高等特点，广泛用于开发低水头水力资源。
3
The axial flow turbine is highly efficient and is widely used under relatively lowwaterhead. The article studies some typical structures of axial flow turbine, helpful for design of such turbine.