用数值模拟方法检测汽轮发电机组事故原因

2018 IEEE 3rd International Conference on Intelligent Energy and Power Systems (IEPS) Pub Date : 2018-09-01 DOI:10.1109/IEPS.2018.8559546

A. Rusanov, Gennadii Martynenko, K. Avramov, V. Martynenko

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引用次数: 16

摘要

提出了一种确定汽轮发电机组事故原因的方法。事故原因可以是与设备故障有关的因素，也可以是技术因素。例如，结构部件与设计值的偏差与这些技术因素有关。该方法将气体动力学行为、热场和叶片的动态应力-应变状态结合起来进行分析，是一种跨学科的方法。该方法基于气体动力学和动强度的数值方法。采用粘性可压缩气体模型计算了汽轮机叶片格内的蒸汽流动。为了对结构进行数值积分，采用非线性有限元模型分析了叶片在气动载荷作用下的强迫振动。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Detection of Accident Causes on Turbine-Generator Sets by Means of Numerical Simulations

The method for an identification of accident causes of turbine-generator sets is suggested. The accident causes can be factors, which are related to the failure of an equipment, and technological factors. For example, a deviation of the structural components from design values is related to these technological factors. The suggested approach is interdisciplinary as a gas dynamic behavior, thermal fields and a dynamic stress-strain state of the bladed disk are analyzed jointly. The approach is based on numerical methods of a gas dynamics and a dynamic strength. The vapor flow through the turbo machine blade lattice is calculated using the viscous compressible gas model. For a numerical integration of the structure a nonlinear finite element model is applied to analyze forced vibrations of the bladed disk under an action of aerodynamic loads.

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来源期刊

2018 IEEE 3rd International Conference on Intelligent Energy and Power Systems (IEPS)

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