draft tube

Focusing on Francis after the modified draft tube and a prototype tube under different conditions a more comprehensive numerical calculation, both quantitative and qualitative evaluation of remodeling after the end of the water pipes.

重点针对将改型后的混流式水轮机尾水管和原型尾水管在不同工况下较为全面的进行数值计算，从定量和定性两个方面评价改型后尾水管的性能。

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A approximate analysis method of pressure impulse of draft tube of mixed-flow hydraulic turbine

混流水轮机尾水管压力脉动的近似分析方法

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An ALR with sectional draft tube was designed for the fermentation process needed feeding.

针对需要流加补料的发酵过程,设计出分段导流筒气升式内环流反应器.

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The result of research and experiment indicate that the designed draft tube of type 12 M have not only excellent comprehensive hydraulic characteristics but also economic dimensions, adaptable to the requirements of excavating and shaping the tailrace tunnel for the underground works.

试验研究成果表明，所设计的12M型尾水管不但有优良的综合水力性能，而且有经济的外形尺寸，适合于工程成洞的需要。

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The Effect of Gatage on the Pressure Fluctuation in Draft Tube of Francis Turbine

导叶开口对混流水轮机尾水管压力脉动的影响

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With the FFT analysis it is analyzed that the pressure surge changing laws in the taper pipe and draft tube in time domain and frequency domain.

通过水压力脉动数据的FFT频谱分析，研究了直锥段和尾水管内部在不同位置不同工况下的压力脉动在时域及频域上的变化规律。

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Shaft-extension type tubular turbine is a major type for developing medium and small-sized low-head hydropower station. The three-dimensional flow field in draft tube is complex, which has large influence on energy characteristic and stabilization of water turbine.

轴伸贯流式水轮机是开发低水头中小型水电站的常用机型，其S型尾水管内三维流场复杂，水流流态对水轮机的能量特性和稳定性影响较大。

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Remodel Design for Turbine Draft Tube and CFD Analysis

尾水管的改型设计与CFD分析

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In the experimental study, the pressure surge data are acquired at 26 points from the taper pipe intake to the draft tube exit distributing at 8 sections under 6 stable operating conditions.

对水轮机模型，测取了从直锥段进口至尾水管出口8个截面共26个测点在6个稳定运行工况下的水压力脉动数据。

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We simulated not only the pressure fluctuation in front of the runner, but also the unsteady vortex in the draft tube by means of the unsteady flow computation in an entire model turbine. Thus, the realistic hydraulic unsteady phenomena occurring in the turbine was predicted.

通过模型水轮机全流道瞬变流计算，不仅模拟到转轮前的压力脉动，而且模拟出尾水管中非定常涡带，从而预估出了水轮机中的水力非稳定现象。

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Applied Research on Spout-fluidized Bed with Draft-tube

带导流管的喷动流化床的研究进展

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Research on internal-loop airlift bioreactor with divided draft tube

分段式内循环气升反应器的实验研究

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Modification is in upstream of main auxiliary powerhouse, and tail water system is made up of draft tube, the exit gate.

主变位于上游副厂房，尾水系统由尾水管、出口闸门组成。

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Analysis of Draft Tube Vibration Induced by Tailrace Eddy based on A Fluid-Structure Coupling Numerical Method

基于流固耦合数值方法的尾水涡带诱发尾水管振动分析

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Solids flow characteristics in spout-fluidized bed with draft tube

循环喷动流化床固体流动规律

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The pulsating pressure data measured in draft tube of hydro-turbine model test for the Three Gorges Power Station working under 73 m water head are utilized to generate the pulsating pressure field in the whole flow passage.

本文利用三峡电站73m水头水轮机模型试验中脉动压力的实测数据，构造出整个流道内脉动压力场，求出了厂房结构在各种振源联合作用下的动力响应。

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Analysis of Pressure Fluctuation in the Draft Tube of ALSTOM Units in the Left Bank of Three Gorges Hydropower Station

三峡水电厂左岸ALSTOM机组尾水管压力脉动分析

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Influence of Simple Tailrace Surge Tank Location on Draft Tube Minimum Pressure

简单式尾水调压室位置对尾水管最小压力值的影响

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Several Methods of Combined Solution for Water Hammer in Draft Tube and Surge in Tailrace Chamber

尾水管水击与尾水调压室涌波联合求解的几种方法

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