核电汽轮机热紧螺栓电阻加热数值研究  

Numerical Study on Resistance Heating of Thermal Tightening Bolt of Nuclear Power Steam Turbines

作　　者：刘铸锋 谢永慧[1] 张荻[1] 王军 侯志华 刘斌 郭艺辉 LIU Zhufeng;XIE Yonghui;ZHANG Di;WANG Jun;HOU Zhihua;LIU Bin;GUO Yihui(School of Energy and Power Engineering,Xi’an Jiaotong University,Xi’an 710049,China;CNNP Nuclear Power Operations Management Co.,Ltd.,Jiaxing 314300,China)

机构地区：[1]西安交通大学能源与动力工程学院,西安710049 [2]中核核电运行管理有限公司,嘉兴314300

出　　处：《热力透平》2020年第1期8-16,共9页Thermal Turbine

摘　　要：以热辐射理论为基础,对某核电汽轮机热紧螺栓进行简化,采用有限元分析求解软件建立了三维热辐射有限元模型,对热紧螺栓在电阻加热条件下的温度场进行分析,并通过热固耦合分析功能,对预紧力状态下的高强度螺栓的变形和应力进行了计算,得到了电阻加热过程中热紧螺栓的温度场和应力场的分布规律。通过将理论计算结果与实验结果进行比较,发现二者吻合良好,由此验证了有限元理论分析方法的可行性与正确性。研究结果可为今后的电阻加热优化及规范制定提供参考。Based on the theory of thermal radiation,the thermal tightening bolt of a nuclear power steam turbine was simplified.A three-dimensional finite element model of thermal radiation was established using the finite element analysis software.The temperature field of the thermal bolt under resistance heating was analyzed.Adopting the method of thermal-structural coupling analysis,the structural field under pretension was calculated and distribution of temperature field and stress field of high strength thermal tightening bolt during resistance heating was obtained.Compared with the experimental result,the theoretical calculation one was found to be in good agreement with that,which verifies the feasibility and correctness of the finite element theoretical analysis method.The research results can provide reference for the optimization of resistance heating and the formulation of regulations in the future.

关 键 词：热紧螺栓 有限元分析 电阻加热 热固耦合 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]