某40MW汽轮机组末级长扭叶片枞树型叶根设计OA
Design of Fir-tree Blade Root of the Last Long Twisted Blade of a 40 MW Steam Turbine
介绍了某40 MW汽轮机组末级长扭叶片的两种枞树型叶根结构,比较了两种叶根结构采用传统算法时的应力情况,评估了枞树型叶根优化的可行性,并建立了长扭叶片的有限元分析模型.通过对长扭叶片与轮槽进行有限元计算,分析了汽轮机末级长扭叶片枞树型叶根过渡段轴向长度及轮缘处叶根轴向斜角在不同取值时叶根的最大等效应力,确定了枞树型叶根的几何参数,同时为保证叶片和机组的安全可靠性,建立了长扭叶片的模态分析模型,分别计算了叶片在4 900 r/min和5 000 r…查看全部>>
Two kinds of fir-tree blade root structures of the last stage blade of a 40 MW steam turbine are introduced,the stress of the two kinds of blade root structures when using the traditional algorithm are compared,the feasibility of optimizing the fir-tree blade root is evaluated,and the finite element analysis model of the blade is established.Based on the finite element calculation,the axial length of the transition section of the fir-tree blade root of the l…查看全部>>
王超军
广州广重企业集团有限公司汽轮机研究所,广州 511495
能源与动力
汽轮机枞树型叶根有限元应力振动
steam turbinefir-tree blade rootfinite element methodstressvibration
《机电工程技术》 2024 (7)
279-282,4
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