适用于中低水头，一般2－30米。其特点是水流流经转轮时始终沿着轴的方向。轴流式水轮机结构简单，适用于中小容量、水头及负荷变化较小的电站。
Axial turbine is applicable for middle and low head of 2 ~30 meters. The feature is that the flow shall go on along the direction of shaft while passing through the runner. This type of turbine is of simple structure,and appropriate to the power station of middle&small capacity with little head and load variation.
轴流式机组适用于低水头水力资源的开发，使用水头一般2~30m，有轴流转桨式和轴流定桨式。
Axial turbines are suitable for low head 2 to 30 meters.They can be classifiesd into forms accrding to the structure of the runner:Propeller, with fixed blades, is used for small variation of head and power; Kaplan, with movable blades, is used for large variation of head and power.
