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rotating shafts
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  旋转轴系
     Based on introducing the principle for measuring the torsional vi- brations of rotating shafts and its signal process aboutthe time pulse method,the construction and functions of a newly developed monitoring and analyzing system for the torsional vibrations of turbogenerator shafts are set forth in detail.
     本文在介绍时间脉冲法测量旋转轴系扭振的原理及信号处理的基础上 ,详细阐述了新近研制的汽轮发电机组轴系扭振监测与分析系统的结构组成和功能分析
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     Based on introducing the principle for measuring the torsional vibrations of rotating shafts and its signal process about the time pulse method, the construction and functions of a newly developed monitoring and analyzing system for the torsional vibrations of turbogenerator shafts are set forth in detail.
     本文在介绍时间脉冲法测量旋转轴系扭振的原理及信号处理的基础上,详细阐述了新近研制的汽轮发电机组轴系扭振监测与分析系统的结构组成和功能分析。
  “rotating shafts”译为未确定词的双语例句
     Rotating Shafts Vibration Analysis of Nuclear Power 300MW Coolant Pump Motor
     300MW核电站冷却剂泵电动机转子振动分析
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     3. Influence of the moment discrepancy between two vibrating motors (△Mg) and the frictional moment discrepancy betweey two rotating shafts (4△Mf) on the working state of vibrating machine.
     3.两电动机转矩差(△Mg)与两转轴上的摩擦转矩差(△M_f)对振动机工作的影响。
短句来源
     Computer Aided Design of Rotating Shafts
     转轴零件的计算机辅助设计
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     THE FINITE DYNAMIC ELEMENTS FOR THE DYNAMIC PROBLEMS OF ROTATING SHAFTS ——The Approximation of the Assumed Shape Functions
     讨论转轴动力学问题的动态有限元——兼论假设形态函数的近似性
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     The inner feedback theory is used to investigate the transverse vibration of rotating shafts, whose motion patterns and system characteristics are greatly different from those of non-rotating ones.
     本文采用内反馈理论分析了旋转轴的横向振动(这一振动与不转轴的运动形态及系统特性有很大的不同);
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  相似匹配句对
     ON DYNAMIC INSTABILITY OF ROTATING VISCOELASTIC SHAFTS
     论粘弹转轴的动力失稳
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     Computer Aided Design of Rotating Shafts
     转轴零件的计算机辅助设计
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     Rotating Broaching
     旋转拉削工艺
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     HELICAL ROTATING ABSORBER
     螺旋型旋转吸收器
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     Parameterized Drawing of Shafts
     轴的参数化绘图
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  rotating shafts
Stability problems of rotating shafts are usually solved by linearization without investigating the influence of nonlinearity, and in most cases persistant disturbances are not taken into account.
      
Von Mises' yield criterion and nonlinearly hardening rotating shafts
      
A systems approach to the design of resistance strain gauges for measuring torque on rotating shafts, designed to operate at high levels of external disturbances, is proposed.
      
Amplitude and phase methodological errors in measurement of vibrational displacements of rotating shafts
      
Selection and evaluation of collector devices for measuring the torque of rotating shafts in various machines
      
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An internal recycle gradientless reactor had been designed for studying gas/solid catalytic reaction kinetics. The construction of the reactor is simple. The electromagnetic stirrer was employed in order to overcome the difficulties of the radial sealing of the rotating shaft. The catalyst may be put on the perforated fixed plate or in the rotating basket moving with the shaft. It enables to accommodate catalyst size from a few tenth of a milimeter to commercial size. Residence time distribution...

An internal recycle gradientless reactor had been designed for studying gas/solid catalytic reaction kinetics. The construction of the reactor is simple. The electromagnetic stirrer was employed in order to overcome the difficulties of the radial sealing of the rotating shaft. The catalyst may be put on the perforated fixed plate or in the rotating basket moving with the shaft. It enables to accommodate catalyst size from a few tenth of a milimeter to commercial size. Residence time distribution measurements showed that the gas flow pattern was ideal mixing flow. The axial and radial temperature differences in the reactor were very small. The reactor may be operated up to

设计了一种内循环式无梯度反应器,可用以进行气固相催化反应动力学的研究。反应器的结构简单。采用电磁搅拌器以克服旋转轴径向密封的困难。催化剂可静置于多孔板上,或放在转篮中与轴一起运动。催化剂的粒度从零点几毫米至工业粒度均可适用。经停留时间分布测定证明反应器内气体的流动状况属于理想混合。径向及轴向的温度差甚小。这种反应器可以在800℃以下的温度操作。 研究了不同的气体体积流量下停留时间分布和搅拌速率间的关系。为了达到完全混合状态,较高的气体流量要求较高的搅拌速率。此外,在不同的搅拌速率下,还测定了反应器出口反应物的浓度,当搅拌速率增加至某一定数值后,组成不再改变。

A method, by taking the difference between two mean rotative moments, is applied hereon to analyze the synchronous vibration on a self-synchronous vibrating machine with single or duaI mass in space motion. Such an analysis has been considered with the addition of following aspects:1. Synchronization conditions in a self synchronous vibrating machine;2 Damping effects on the synchronization conditions and the stability of synchronous working state.3. Influence of the moment discrepancy between two vibrating...

A method, by taking the difference between two mean rotative moments, is applied hereon to analyze the synchronous vibration on a self-synchronous vibrating machine with single or duaI mass in space motion. Such an analysis has been considered with the addition of following aspects:1. Synchronization conditions in a self synchronous vibrating machine;2 Damping effects on the synchronization conditions and the stability of synchronous working state.3. Influence of the moment discrepancy between two vibrating motors (△Mg) and the frictional moment discrepancy betweey two rotating shafts (4△Mf) on the working state of vibrating machine.A synchronization criterion has been developedas:where Dα: synchronization factor;W: stability factor; m0,r: eccentric mass and its eccentricity;κ: angular velocity.Also, the stability criterion of synchronous state has been given in the term of respectively. The symbol △α0 here expresses the phase angle between two eccentric masses. The stability factors W of a self-synchronous vibrating machine, in space motion, are given by formula(21)and (54) as working with single mass and dual mass respectively. Fairly satisfactory results have been achieved by the experimental verification for the above.

本文用平均转矩差法研究了空间单质体与双质体自同步振动机的同步理论,对下列问题予以考虑: 1.自同步振动机的同步性条件; 2.振动阻尼对振动机同步性条件与同步运转状态稳定性的影响; 3.两电动机转矩差(△Mg)与两转轴上的摩擦转矩差(△M_f)对振动机工作的影响。 求得同步性判据为 |D_a|≥1,D_a=m_0~2φ~2r~2W/△M_g-△M_f 式中,D_a——同步性指数; W——稳定性指数; m_0、r——偏心质量及其偏心距; φ——角速度。 并求得同步运转状态的稳定性判据为 Wcos△α_0≥0 即 W≥0 (当△a_0=-90°~90°) W≤0 (当△α_0=90°~270°) △α_0为两偏心质量的相位差角。 自同步振动机的稳定性指数W,当振动机为空间单质体和空间双质体时其表达式分别为式(21)及式(54)。上述判别式通过实验验证,结果是满意的。

A calculation of the critical speed of a rotating disk and shaft system is obtained by F.E.M. The portions of disk and shaft of variable sections are described approximately by conical portions respectively. The displacement in the element is interpolated by a three-order polynomial fanetion. ln the calculation, the gyroscopic moment of the disk and shaft is taken into consideration. As for the vanes(straight and torsional), a suitable simplificafion is made. The influences of shaft shear and the oil fire rigidity...

A calculation of the critical speed of a rotating disk and shaft system is obtained by F.E.M. The portions of disk and shaft of variable sections are described approximately by conical portions respectively. The displacement in the element is interpolated by a three-order polynomial fanetion. ln the calculation, the gyroscopic moment of the disk and shaft is taken into consideration. As for the vanes(straight and torsional), a suitable simplificafion is made. The influences of shaft shear and the oil fire rigidity of the bearing are neglected, and the bearing surface is considered rigid. This paper discusses a suitable method by which to calculate the critical speed of complex and multi-span rotating shafts. The computer program input only requires the information of constants of the material properties, the dimensions of elements, the number of elements and nodal points. Therefore, it is convenient to use. This method enables us to calculate the lowest critical speeds and modes.

本文对变截面的轮或轴分段用锥面的轮或轴来近似,单元内的位移用轴段端部位移作三次函数插值。考虑了轮和轴的回转仪力矩,对叶片(直叶片和扭曲叶片)也作了适当的处理。没有考虑轴的剪切及轴承油膜刚度的影响,轴承只作为刚性支座来考虑。本方法适合于计算结构复杂、多跨的转轴的临界转速。所编程序只需输入转轴的材料性质的有关常数、单元的尺寸及单元、结点编号等信息,使用方便。可计算前数阶临界转速和振型。

 
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