The investigation shows the performance gets quite insensitive to the prewhirl angle of igv as the stagger angle of diffuser vane is reduced to the minimum 7 ; the combination of these two stators enables to greatly improve the compressor efficiency over the entire operating rage , the maximum efficiency with the combined adjustment reaches 86 . 0 % , higher than that in alone adjustment of igv or diffuser vanes by 2 % 研究表明：扩压器进口安装角最小值为7时，压缩机性能对进口导叶预旋角不敏感；采用不同的扩压器进口安装角和不同进口导叶预旋角匹配调节时，压缩机所能达到的最高效率为86 . 0 % ，比单独调节进口导叶预旋角或扩压器进口安装角所能达到的效率高2 % 。
Aiming at the problems in the field of the government for hydraulic turbine , this thesis applies the technology of programmable controller to the speed control of hydroelectric generators in hydropower station . a digital regulating system based on the fx2 programmable controller for the water - gate and paddle of hydraulic turbine is developed . first , the turbine regulating system is briefly introduced and the mathematics model of the system is derived 本文针对当前我国水轮机调速器领域技术现状，将可编程控制器技术应用于水电厂发电机组的转速控制，提出了在应用可编程控制器实现导叶控制系统的基础上，以可编程控制器实现导叶、轮叶双调整控制系统，并参与研制了以fx2可编程控制器为核心的水轮机双调节控制器，样机的实际运行良好，系统的软硬件设计得到验证，结果令人满意。
This paper focusses on three smart actuators , among which the communications are implemented via can bus , in order to construct a semi - phisical simulation platform for the aero - engine distributed control system . three smart actuators are designed and inplemented in the laboratory environm - ent , using ti ’ s digital signal processor tms320f2812 本文使用ti公司的tms320f2812数字信号处理器作为微控制器,设计、制作了实验室环境下的基于can总线的智能执行机构,包括矢量喷口控制器、旋转计量活门控制器和导叶控制器,并分别对它们进行了调试。
Presents the system established by taking variable - speed torque converter with adjustable guide blades as a pilot control unit and forming an open or closed loop feedback control system , and its outstanding advantages , such as high capacity , simplicity , reliability and good transmission efficiency owned by hydrodynamic drive , and the dynamic model developed for variable - speed torque converter with adjustable guide blades by means of theoretical analysis and regression analysis of experimental data , and concluds that the model is sophisticated and simple enough to be used as a tool for design , analysis and computer simulation of a hydrodynamic control system 以导叶可调式液力变矩器作为控制单元组成的开环或闭环液力控制系统，具有液力传动装置能容大、系统简单可靠、传动效率较高等显著的优点.通过理论分析和试验数据的回归分析方法建立了导叶可调式液力变矩器的数学模型，模型既简单，又有足够的工程应用精度，为液力控制系统的设计、动态分析和性能预测提供了必要的理论基础
Finally , the analysis examples were presented combined with some real data from hydroelectric set , they showed that numerical simulation of fluid - solid coupling for vibration in this paper is more available and the natural frequency of guide vane in water is lower than that of in air 运用ansys有限元软件计算了水轮机导叶在空气中的振动特性以及液固耦合振动的频率和振型，并对二者进行比较，分析了影响振动的因素。通过算例表明，所采用的有限元数值模型合理，计算结果正确。
Above all , the surface of the gas turbine blade including stator and rotor heat transfer coeficience with no film cooling hole was studied with the main stream reynolds number of 150000 , 200000 50000 , 300000 , 350000 , 400000 . then , the heat transfer coefficience when all cooling holes opened and only one cooling hole opened was studied partly . and it ' s studied how the mainstream reynolds number , blowing ratio and the position of holes affect the heat transfer coefficience of the surface of blade 对导叶和动叶，都是先研究了在150000 ， 200000 ， 250000 ， 300000 ， 350000 ， 400000雷诺数下，没有气膜冷却时的表面换热系数分布，然后研究了气膜孔全打开和只打开单排孔时的表面换热系数分布曲线，重点研究来流雷诺数，吹风比和不同孔位出流对换热系数分布的影响规律。
In fact , the outlet flow of vane in the hydroelectric set is non - uniform flow for a variety of possible reasons . the flow is unsteady flow relative to vane and blade , and it is the main factor that affect self - excited vibration and dynamic characteristic of guide vane and hydraulic - turbine , which affect directly the power set to run safely and stably 非均匀来流相对于导叶、叶片必然是一种非定常流。这种非定常流造成导叶和转轮叶片的激振，是产生导叶和叶片动应力，改变它们频率的最主要因素，而导叶和叶片的动力特性直接影响水轮机的稳定性。
The structure of water - gate regulator system based on programmable controller is illustrated , the focal point of the work is the researching of paddle regulator system , the hardware structure of government and realization of the software system are introduced . at the end of the thesis , a summary of research is given )与配置，比较了单片机测频、专用电路测频等几种测频方案，对其优缺点进行了分析，提出了高可靠性的多通道冗余测频方案；在此基础上设计了可编程控制器导叶控制系统的硬件结构和软件结构。
The main research outcomes were as follows : ( 1 ) the paper applied quasi - three dimensional design model and optimization design model based on si flow surface that was effected by runner ( impeller ) and guide vane jointly . the vortex flow , blade thickness limitation and runner ( impeller ) blade force functions were taken into account . the paper got the improved runners of hl240 type , which were runner hlx240d and runner hlx240e 主要成果有： ( 1 )应用考虑转轮来流有旋、叶片有限厚及转轮(叶轮)叶片力作用的转轮(叶轮)与导叶联合作用的基于s _ 1流面的准三维设计模型和优化设计模型，研究出了hl240的改进型转轮： hlx240d和hlx240e 。
The pressure existing between the guide vane and the runner when the pump - turbine of east china tongbai pumped storage power station stops at different loads is analyzed , and the method for determining the best load at which the generator circuit breaker ( gcb ) switches off during operation of the pump - turbine is illuminated 摘要介绍华东桐柏抽水蓄能电站的水泵运行时，不同负荷工况下停机、导叶和转轮间压力的变化，阐述了华东桐柏抽水蓄能电站1号机组发电机断路器开断的最佳负荷值选定。
