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turbogenerator
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  turbogenerator
Study of the fatigue resistance of the material of segments of turbogenerator stators
      
Stress - Strain state and strength of a model bimetallic turbogenerator rotor
      
Investigation of low-cycle strength of springs of turbogenerator stators
      
Investigation of the resistance to failure under impact loads of a turbogenerator rotor of 35KhN3MFA steel
      
The basic requirements for constructional materials for turbogenerator rotors with superconductor excitation windings
      
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? The formulas for calculating the sensitivity of unbalance response to the various parameters of the rotor bearing system of large turbogenerator sets were derived. The expressions of the sensitivity of response to the unbalance and the dynamic coefficients of the oil films were obtained. The previous study may help to improve the accuracy of balancing by suitable choosing the correcting planes and changing the coefficients of oil films. Besides, the necessity for balancing the generator rotor together...

? The formulas for calculating the sensitivity of unbalance response to the various parameters of the rotor bearing system of large turbogenerator sets were derived. The expressions of the sensitivity of response to the unbalance and the dynamic coefficients of the oil films were obtained. The previous study may help to improve the accuracy of balancing by suitable choosing the correcting planes and changing the coefficients of oil films. Besides, the necessity for balancing the generator rotor together with the excitor rotor was verified. 

用有限元法导出了转子上各结点的不平衡响应对转子-轴承系统各参数灵敏度的计算公式。为了把灵敏度分析用于提高转子的平衡精度,着重分析了不平衡响应对结点的不平衡量以及对轴承油膜参数的灵敏度,给出了相应的表达式。这可为选择高效的校正平面,或改变油膜参数以提高平衡精度提供参考。针对大型汽轮发电机组,论证了在制造厂内对发电机和励磁机所组成的小轴系进行动平衡的必要性。

A torsional vibration model of elastic continuous systems is established for a turbogenerator rotor shaft system. An analysis method tosolve torsional wave equation of a complex stepped shaft system is presented. The properties of torsional vibration wave in a 200 MW of turbogenerator shaft system are calculated. The calculating results of the continuous system are compared with the discrete system and experiment results. The characters of forced torsional vibration of turbogenerator shaft...

A torsional vibration model of elastic continuous systems is established for a turbogenerator rotor shaft system. An analysis method tosolve torsional wave equation of a complex stepped shaft system is presented. The properties of torsional vibration wave in a 200 MW of turbogenerator shaft system are calculated. The calculating results of the continuous system are compared with the discrete system and experiment results. The characters of forced torsional vibration of turbogenerator shaft system due to short circuits or faulty synchronization are investigated by means of the method.

建立了汽轮发电机组轴系的弹性连续体扭振模型,提出了求解复杂阶梯轴系扭振波动方程的解析方法。计算了一台200MW机组转子轴系扭振波动特性的精确解,并与离散系统计算结果做了比较。根据机组扭振干扰力矩的复杂性和随机性,利用该方法进行了网机耦合作用下的扭振强迫振动考核。

For the pressed parts of turbogenerator unit,the inpeller and vane of steam turbine or gas turbine,the parts heated in internal combustion engines and parts welded,the dynamic nature of these materials will be be changed due to the acting high-temperature.Heat stress,plastical flow and yielding criterion which cliange with temperature.Acturally it forms a problem with stress-strain analysis in heat elastical-plastical state.\;Using parameter calculus of variations the principle dealing with the problem...

For the pressed parts of turbogenerator unit,the inpeller and vane of steam turbine or gas turbine,the parts heated in internal combustion engines and parts welded,the dynamic nature of these materials will be be changed due to the acting high-temperature.Heat stress,plastical flow and yielding criterion which cliange with temperature.Acturally it forms a problem with stress-strain analysis in heat elastical-plastical state.\;Using parameter calculus of variations the principle dealing with the problem is established and a corresponding finite element form is given in the issue.In fact the problem is transformed to common elastical-plastical state and can be resolved with parameter two-order programme.

对于火电厂中大、中型汽轮发电机组的承压部件 ,汽轮机转子上的叶轮与叶片 ,燃气轮机的叶轮与叶片 ,各种发动机中处于燃烧室附近的机械零部件以及焊接加工零件等 ,由于温度效应使材料的弹性模量、泊松比和屈服极限等力学性能都将发生变化 ,从而引起的热应力、塑性流动和随温度变化的屈服准则等都相互耦合在一起 ,这实际上是一个热弹塑性状态下构件的应力与应变分析问题。本文运用参变量变分原理建立起处理这一类问题的数值变分原理及其相应的有限元形式 ,实质上从数学上说 ,是将原问题转化为处理普通弹塑性状态下结构分析问题的参数二次规划法

 
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