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汽轮机轴系磨损部位的合理处理关系到机组的运行安全,为了使处理方案更加科学合理,采用有限元软件ANSYS建立轴系磨损部位的局部有限元模型;通过合理设置边界条件,求出了不同处理方案下磨损部位的应力集中系数,为方案的优化选择提供依据。以某电厂磨损故障为例,采用该方法对处理方案进行优化,计算结果表明,优化后的方案较大幅度地降低了磨损部位的应力集中系数,为机组的安全运行提供了可靠的保障,说明该方法是有效可行的。本文提出的方法适用于类似故障的处理。
In order to make the treatment scheme more scientific and reasonable, the finite element software ANSYS was used to establish the local finite element model of the worn parts of the shaft system. Through the reasonable setting of the boundary conditions, the different treatment The stress concentration factor of the worn part under the program provides the basis for the optimization of the program. Taking a wear failure of a power plant as an example, this method is used to optimize the treatment scheme. The calculation results show that the optimized scheme greatly reduces the stress concentration factor of the worn part and provides a reliable guarantee for the safe operation of the unit. This method is effective and feasible. The method proposed in this paper is suitable for similar fault handling.