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twisted blade
相关语句
  扭曲叶片
     The Application Study of Non-equal Changeable Angle Logarithm Helical Curve in Drawing Shape of Twisted Blade
     非等变角对数螺旋线在扭曲叶片绘型中的应用
短句来源
     With the aid of 2-D rebounding experimental formulas,a set of calculation formulas for 3- D twisted blade particle rebounding is worked out.
     考虑风机叶片的三元扭曲特性,推得一整套三元扭曲叶片粒子反弹的计算公式.
短句来源
     Compared with the single-curved blade,the uniformity of encountering points of the 3-D twisted blade is better.
     对三元扭曲叶片和单圆弧叶片的碰点分布进行了计算比较,前者比后者的分布均匀程度有所改善。
短句来源
     The development and application of solid turbine technique and twisted blade technique are analyzedin this paper,And then the prospect of solid turbine with ring and twisted blades is also discussed
     分析了整体涡轮盘技术和扭曲叶片技术的发展和应用,并讨论了带叶冠扭曲叶片整体涡轮盘技术的应用前景.
短句来源
  弯扭叶片
     Design Thinking and Design Criteria of Twisted Blade and Its Application in Steam Turbine
     弯扭叶片的设计思想、设计准则及其在汽轮机中的应用
短句来源
     Based on the research on twisted blade for years and the experiences of using twisted blade in these years, this paper systematically generalizes design thinking and design criteria of twisted blade, illustrates matching criteria among diversified profile and matching criteria in blade row of twisted blade, and tests the above thinking and criteria combining with the retrofit of flow passage component of China's 200MW steam turbine.
     根据对弯扭叶片的多年的研究和近几年来的使用经验 ,较系统地归纳出了弯扭叶片的设计思想和设计准则 ,对弯扭叶片的多种型面匹配准则与弯扭叶片叶列间的匹配准则进行了阐述 ,结合国产 2 0 0MW汽轮机通流改造的实例 ,对上述思想及准则进行了验证
短句来源
  扭叶片
     Modal Measurement and Analysis of Twisted Blade in Low-pressure Stage of 300MW Turbine
     300MW汽轮机低压级扭叶片的模态测试与分析
短句来源
     Twisted Blade Virtual Design for Steam Turbine
     汽轮机扭叶片的虚拟设计
短句来源
     A basic framework of twisted blade virtual design is set up based on the theory and method of product virtual design,and aiming at the thermodynamic process of middle or lower stage of steam turbine.
     运用产品虚拟设计的基本理论和方法,针对汽轮机中低压级的热力过程,建立了扭叶片虚拟设计的基本框架.
短句来源
     This paper presents the on-line measurement of profile error on XK5040 NC machine. The object is a 700mm long twisted blade of gas turbine.
     以汽轮机700mm扭叶片为对象,在XK5040数控机床上,进行了型面误差在线检测的研究。
短句来源
     Third-order B-spline method is used in the twisted blade design considering the inlet and outlet flow angles .
     叶型型线设计采用三次B样条控制成型、径向叠加的方法 ,按照进出口汽流角的变化规律进行径向扭曲 ,最终获得三维扭叶片 .
短句来源
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  “twisted blade”译为未确定词的双语例句
     Performance Study on Centrifugal Compressor Stage with Three Dimentional Twisted Blade Impeller
     离心式压缩机三元叶轮级的性能研究
短句来源
     EXPERIMENTAL STUDY OF CENTRIFUGAL COMPRESSOR STAGES WITH THREE DIMENTIONAL TWISTED BLADE IMPELLER
     离心式压缩机节能转子试验研究
短句来源
     Calculation of Coupled Vibration in a Twisted Blade of Turbines
     汽轮机扭曲叶片的振动计算
短句来源
     ENGINEERING DESIGN AND EXPERIMENT STUDY FOR THE BOWED AND TWISTED BLADE IN SUB-LAST AND LAST STAGES OF STEAM TURBINE
     汽轮机次、末两级弯扭静叶的工程设计与实验研究
短句来源
     Development of A New Stationary Declivous Twisted Blade
     新型斜扭静叶的开发
短句来源
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  twisted blade
In this case, the process of nonuniform heating of the naturally twisted blade is performed by a gas flow with cyclically varying temperature.
      
Various volume flow rates were specified to study off-design conditions for twisted-blade pumps M2 and M3.
      
The sensitivity vector can be unfavorable for parts of a highly twisted blade, but has little effect on the blade used for this study.
      
Figure 6 shows the triaxiality contour for a twisted blade in first bending vibration.
      
Comparison of computational results for various types of pumps showed good agreement for the twisted-blade pumps.
      


The differential equation of motion for the secondary water drops in the wake of a fixed blade is solved numerically, taking into account the drop deformation, break-up time and steam velocity variation in the wake. Some results and analysis are presented. The results of calculation for erosion position of an actual long twisted blade by the given method is in good agreement with the available results of measurement as given in literature[2]. Finally, a criterion of safty against erosion is obtained as...

The differential equation of motion for the secondary water drops in the wake of a fixed blade is solved numerically, taking into account the drop deformation, break-up time and steam velocity variation in the wake. Some results and analysis are presented. The results of calculation for erosion position of an actual long twisted blade by the given method is in good agreement with the available results of measurement as given in literature[2]. Finally, a criterion of safty against erosion is obtained as a function of the drop velocity.

本文采用数值解法求解湿蒸汽透平级静叶尾迹区二次水滴的运动微分方程,得出在不同工作条件下各种尺寸二次水滴的运动特性.计算时考虑了水滴变形和破裂以及尾迹区蒸汽速度埸不均匀分布对水滴加速过程的影响.用所述方法对一个实际湿蒸汽透平级动叶的水蚀部位作了验算,计算与实测取得一致.最后对这一方法在叶片防水蚀方面的应用作了探讨,并建立了一个确定动叶水蚀可能性的判别关系式.

The blade-type swirlers have been used in many air engine combustors to control the primary airflow of flame tube and establish a strong recirculation zone. The losses produced by the swirler depend on stagger angle, pitch/chord ratio and passage area of blades.Some test results of the swirlers with different stagger angles, numbers of blades and flow areas are presented. A set of discharge characteristics and relations between loss coefficient and swirl number, stagger angle or blade number are provided. In...

The blade-type swirlers have been used in many air engine combustors to control the primary airflow of flame tube and establish a strong recirculation zone. The losses produced by the swirler depend on stagger angle, pitch/chord ratio and passage area of blades.Some test results of the swirlers with different stagger angles, numbers of blades and flow areas are presented. A set of discharge characteristics and relations between loss coefficient and swirl number, stagger angle or blade number are provided. In addition, the correlation of loss coefficient to discharge coefficient of blade-type swirlers has been established. It is found out that the discharge coefficient varies from 0.6 to 0.9 for swirlers with different stagger angles. The correlation ψ=31.0(1.53s- 1) indicates that the selection of swirl number must retain the loss coefficient at an acceptable level (aerodynamically).It can be seen from the test results that the blade loss is evidently smaller than the secondary expansion loss for a given combustor swirler. The value of the blade loss is about 18 percent of the total loss for a straight blade swirler with stagger angle varying from 68° to 70°.The tests have also proved that the twisted blade swirler is superior to the straight one from the aerodynamic point of view. But its manufacture is more complicated. Therefore, the straight blade swirlers (with stagger angle ≥45°) have been used in a large number of combustors.

航空喷气发动机燃烧室中广泛采用叶片涡流器来控制火焰筒的一次空气流量,并建立强回流区。 本文通过总结一组具有不同叶片安装角、叶片数及通道截面积的直叶片涡流器的试验结果,提出了一套涡流器的流量特性与阻力特性曲线,并建立了涡流器的阻力系数与涡流数,叶片安装角、涡流器的流量系数与阻力系数之间的关联式。

Based on the general formula[1] for three-dimensional flow in turbomachines and practical gasflow model(jet-wake model)for centrifugal impeller[2], an optimum program for the improvement of the efficiency of the centrifugal type compression machines according to the optimal blade loading and with the boundary layers unsegregated in the blade passage as the constraint is presented. Calculations are carried out for two kinds of twisted blade profile with A(S) =const. and A(s) = As + B. The flow diagram and...

Based on the general formula[1] for three-dimensional flow in turbomachines and practical gasflow model(jet-wake model)for centrifugal impeller[2], an optimum program for the improvement of the efficiency of the centrifugal type compression machines according to the optimal blade loading and with the boundary layers unsegregated in the blade passage as the constraint is presented. Calculations are carried out for two kinds of twisted blade profile with A(S) =const. and A(s) = As + B. The flow diagram and computation results are given. Performance test shows that the theoretical analysis is in good agreement with test results.

本文根据三元流动普遍关系式与离心式叶轮实际气体流动模型,提出了按叶片最佳负荷规律与叶道内附面层不分离准则为约束条件的优化设计方法;研究了叶片中面形状按_A(s)=const与_A(s)=As+B两种扭曲规律变化的三元翼型,分别进行了正反问题的设计计算;给出了程序框图与计算结果.本文还对研制成的三元等厚度翼型叶轮的离心风机作了综合性能试验,试验结果表明,在流量系数为0.193、压力系数为0.55时,风机的全压效率达到了92.6%.

 
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