核级直立式主给水控制阀抗震性能优化技术研究
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摘要
针对某核级直立式主给水控制阀自振频率较低的问题,基于ASME规范和Femap+NX Nastran有限元平台,研究直立式核级阀门抗震性能评估与优化技术。通过对某型号控制阀试验数据和仿真数据的对比,验证了直立式阀门有限元分析技术的有效性。针对直立式控制阀门的结构特点,提出了直立式控制阀执行机构力学模型,研究了阀门支架关键结构参数对结构频率的影响规律,进而采用拓扑优化技术优化了阀门支架结构。最后,仿真结果表明所设计阀门整体自振频率大于33 Hz,具有良好抗震性能。
The anti-seismic performance evaluation and optimizati on technique of a main feed-water control valve were studied based on the ASME Code and Femap+NX FEA technique to improve the low natural frequency of a nuclear grade vertical-type main feed-water control valve.The simulation method effectiveness of vertical-type valve was verified through the comparison between the simulation data and experimental data.A mechanical model of the main feed-water control valve was proposed based on the structure character of this vertical type control valve.The influence of the key structural parameters of the valve bracket on the structural frequency was studied.The topological optimization technology was used to optimize the bracket of the valve.The simulation results of the control valve showed that the designed main feed-water control valve fulfilled the antiseismic requirement with the first order natural frequency bigger than 33 Hz.
The anti-seismic performance evaluation and optimizati on technique of a main feed-water control valve were studied based on the ASME Code and Femap+NX FEA technique to improve the low natural frequency of a nuclear grade vertical-type main feed-water control valve.The simulation method effectiveness of vertical-type valve was verified through the comparison between the simulation data and experimental data.A mechanical model of the main feed-water control valve was proposed based on the structure character of this vertical type control valve.The influence of the key structural parameters of the valve bracket on the structural frequency was studied.The topological optimization technology was used to optimize the bracket of the valve.The simulation results of the control valve showed that the designed main feed-water control valve fulfilled the antiseismic requirement with the first order natural frequency bigger than 33 Hz.
引文
[1]Hossain M R,Ashraf M,Padgett J E.Risk-based seismic performance assessment of yielding shear panel device[J].Engineering Structures,2013,56(6):1570-1579.
[2]ASME B31E—2008,Standard for the Seismic Design and Retrofit of Above-Ground Piping Systems[S].
[3]张榛.电磁阀动态响应特性的有限元仿真与优化设计[J].空间控制技术与应用,2008(5):53-56.
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[5]郭中泽,邓克文,陈裕泽.基于拓扑、形状和参数优化的集成设计研究[C]//庆祝中国力学学会成立50周年暨中国力学学会学术大会,北京,2007.
[6]谭涛.离散变量优化设计的连续化方法研究[D].大连:大连理工大学,2006:137.
[7]陈淑玉.连续体拓扑优化设计[D].济南:山东大学,2006:64.
[2]ASME B31E—2008,Standard for the Seismic Design and Retrofit of Above-Ground Piping Systems[S].
[3]张榛.电磁阀动态响应特性的有限元仿真与优化设计[J].空间控制技术与应用,2008(5):53-56.
[4]李秀峰,陈宗华.CAE技术及其在阀门制造业中的应用[J].石油和化工设备,2005(2):5-7.
[5]郭中泽,邓克文,陈裕泽.基于拓扑、形状和参数优化的集成设计研究[C]//庆祝中国力学学会成立50周年暨中国力学学会学术大会,北京,2007.
[6]谭涛.离散变量优化设计的连续化方法研究[D].大连:大连理工大学,2006:137.
[7]陈淑玉.连续体拓扑优化设计[D].济南:山东大学,2006:64.