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1000MW汽轮机高压转子温度在线仿真计算方法的研究

Power Equipment(2012)

Cited 22|Views4
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Abstract
对1 000MW超超临界汽轮机,利用有限元法验证了热应力监控中以高压内缸内壁温度代替转子外表面温度的正确性;采用惯性环节法、差分法、有限元法分别计算了冷态启动、温态启动、热态启动和极热态启动过程的高压转子的体积平均温度和转子中心温度,并进行了温差计算的精度分析,验证了惯性环节法的精度和适用性,并为惯性环节法在其他大型汽轮机转子热应力监控中的应用给出技术路线。
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Key words
finite element,steam turbine,temperature difference,inertial element,thermal stress,difference method
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