Cracks in Francis turbine runner blades threaten the safety, stability and economic profits of the hydropower station.
混流式水轮机转轮叶片裂纹故障严重影响了水电站的安全稳定运行和经济效益的发挥。
This approach effectively solved the problem of runner blade Angle adjustment and is able to rapidly design runner blades with good performance.
这种方法有效地解决了调节转轮叶片出口角度的困难，能较快的设计出性能良好的转轮。
A new method for measuring runner blades of hydraulic machine, known as the fine moire pattern, based on principle of optical interference is introduced.
本文介绍了一种利用光学干涉原理检测水力机械叶片的新方法，即密栅云纹法。
Its development success makes the manufacturing precision of runner blades higher, leads to increase the efficiency of hydro-turbine, and produce the big economical and social benefit.
它的研制成功，极大地提高了叶片的制造精度，进而提高了水轮机的效率，产生了巨大的经济和社会效益。
In reality, long-term use of large turbine runner blades during the break occurs the situation, this fault is occurring within the design life, it pose a great threat to use of the runner.
现实中，在大型水轮机长期的使用过程中转轮叶片会出现断裂的情况，这种断裂是在设计寿命之内发生的，对转轮的使用产生了极大的威胁。
The welding residual stress of the runner is the main reason which leading to the fault of the runner blades, so the study on the welding residual stresses of the runner blade is necessary.
其中转轮的焊接残余应力是导致转轮叶片出现断裂的主要原因，所以对转轮叶片上的焊接残余应力的研究是非常有必要的。
It has the following features: the runner blades themselves are the samples, the test medium is the original silt-laden water from the river course of Yellow river and the test period is short.
其特点在于试验转轮体叶片即为试件，试验介质为黄河天然含沙水并能在短时期内出成果。
The author of this paper analyzes and calculates the relative velocity distribution at the blade exit of runner caused by limited blades and offers the way to improve blade design.
本文作者定量分析计算由转轮有限叶片数引起的叶片出口相对速度分布状态，并以所获结果提出了改善叶片设计的措施。
The factors of effecting runner intensity performance such as the blades number, local thickness of crown and band are analyzed.
分析了叶片数、叶片局部加厚、上冠下环厚度等因素对转轮强度性能的影响。
The factors of effecting runner intensity performance such as the blades number, local thickness of crown and band are analyzed.
分析了叶片数、叶片局部加厚、上冠下环厚度等因素对转轮强度性能的影响。
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