混流式水轮机转轮是重要的水下旋转部件。
The Francis turbine runner is an important running part of under water.
主要论述了混流式水轮机叶片的数控加工工艺。
In this paper, the technology of nc machining of Francis turbine blade is presented.
混流式水轮机的水力稳定性与机组运行工况密切相关。
The hydraulic stability of Francis turbines is closely related to the operating conditions.
混流式水轮机偏离最优工况运行有可能诱发机组的不稳定运行。
Francis turbine's operation out of the optimal mode may induce unstable operation of the generating unit.
该水轮机的经验对今后大型高水头混流式水轮机的设计将是有益的。
Experience gained from these turbines are useful for the future large high-head Francis turbine design.
通过对混流式水轮机座环过渡段进行分析，获得了过渡段的最优结构。
Optimal structure of transition for Francis turbine stay ring was obtained through computing and analysis.
本文系统而简要地介绍了混流式水轮机转轮疲劳设计方法的研究成果。
This paper systematically introduces the fatigue design methods of Francis turbine runner.
混流式水轮机转轮前后的流场研究对于转轮水力设计，改善其性能有着重要意义。
The study on flow field in front and at back of a Francis turbine runner is very important for the runner in its hydraulic design and characteristic improvement.
效率、空化性能及稳定性是混流式水轮机的三大综合性能指标，也是我们研究的重点。
The comprehensive performances, including the efficiency, cavitation and stability are the emphases of research of the hydraulic machinery.
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。
Cracks in Francis turbine runner blades threaten the safety, stability and economic profits of the hydropower station.
以三峡水电站水轮机运行工况为模拟条件进行了混流式水轮机尾水管压力脉动试验研究。
Experimental studies on pressure fluctuation in draft tubes of Francis turbines have bean conducted, simulating operating conditions of the Three Gorges Hydraulic Power Station's turbines.
本文应用有限元方法计算了混流式水轮机叶轮通道中的流场，并由计算机自动绘出流网图。
The meridional through-flow in a mixed flow hydraulic machine is calculated by finite element method.
通过数值模拟首次实现了混流式水轮机转轮内王维空化流场和叶片上三维空穴区域的预测。
The 3d cavitation flow field in the turbine runner and 3d cavity region onthe blade are predicted by the numerical simulation firstly.
本文介绍了一种称之为贯流混流式水轮机的新机型，并就其性能与混流式水轮机进行了详细的比较。
A new type hydraulic turbine which is called tubular-Francis turbine is described in this paper. The performance of this turbine is compared with that of Francis turbine.
三峡电站水轮机是运行水头变幅最大的混流式水轮机之一，其外形尺寸和重量亦是当前混流式水轮机之最。
The turbine for the Three Gorges Project is one of the mixed-flow turbines with great changes of operation water head.
概要介绍混流式水轮机转轮计算机设计的水力设计方法，其一般原理同样适用于离心泵和混流泵叶轮的设计。
A brief presentation on computer aided hydraulic design of Francis Turbine runners is given, the general principle of which are also applicable to centrifugal and mixed flow pump runners.
本文通过分析近期的现场测试数据，给出了混流式水轮机转轮叶片在启动、甩负荷、停机三种过渡工况下的应力状态。
This paper describe the blade stress state of Francis turbine in the course of starting, load rejection, stalling by analysing the field test data.
混流式水轮机尾水管内螺旋形涡带引起的压力脉动是造成混流式水轮机组振动的主要根源之一，严重威胁机组的安全运行。
For Francis turbines, the pressure pulsation in draft-tubes induced by helical vortex rope is one of the main problems and it would seriously affect the safe operation of the unit.
混流式水轮机在非设计工况点下运行时，尾水管内部的非定常流动是由死水域和螺旋涡带的动态行为引起的，尾水管上部的螺旋涡带旋转引起流动的基频脉动。
The unsteady flow in a draft tube of Francis turbine under the off-design operation is produced by the dynamic behavior of a helical vortex rope with the dead core.
以该方法为基础所开发的混流式转轮准三元设计系统，成功地应用于水轮机转轮设计，表明该设计方法是实用和有效的。
This design system has proved to be practical and effective for its successful application in Francis runner design for Three Gorges Project.
针对混流式模型水轮机研发中有关降低高部分负荷压力脉动的方法进行了探讨。
This paper discusses the methods of reducing pressure pulsation in high load zone of Francis turbine models.
针对混流式模型水轮机研发中有关降低高部分负荷压力脉动的方法进行了探讨。
This paper discusses the methods of reducing pressure pulsation in high load zone of Francis turbine models.
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