There iss strong vibration in the draft tube of a Francis turbine or axial flow fixedblade propeller hydraulic turbine when the turbine is running on part loading.
混流和轴流定浆式水轮机在部分负荷下运行时，尾水管中常出现较为强烈的振动。
2
Rotor blade connection according to claim 1 wherein each intermediate layer of the individual dampers is fixed to the support beam structure by a single fastening point.
转子叶片方面，根据权利要求1，其中每一个中间层的个别阻尼器是固定的支持梁结构，由一个单一的紧固点。
3
The high fixed costs of foundations, erection and connection trigger the design and installation of multi megawatt turbines with blade lengths beyond 60 m.