核电厂消氢风机抗震性能的振动台试验研究
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摘要
对压水堆核电厂安全壳消氢风机的抗震性能进行了模拟地震振动台试验研究。使用连续白噪声方法,测得消氢风机在3个正交轴上的固有自振频率及阻尼比。根据核电厂的楼面地震加速度反应谱,生成人工地震波,对消氢风机的3个正交轴向同时输入模拟地震加速度时程进行激振,分别进行了5次运行基准地震(OBE)和1次安全停堆地震(SSE)模拟地震振动台试验。在试验过程中监测风机的运行功能,并对抗震试验前后的风机性能数据进行对比。试验结果表明:该消氢风机在各种地震工况下结构完整,运行功能良好,风机的各项性能指标在抗震试验前后无明显变化,抗震性能满足要求。
Seismic performance of the dehydrogenation fan for nuclear power plants was evaluated based on the shaking table test of earthquake simulation.Dynamic characteristics including the orthogonal tri-axial fundamental frequencies and equivalent damping ratios were measured by the white noise scanning method.Artificial seismic waves were generated corresponding to the floor acceleration response spectra for nuclear power plants.Furthermore,five OBE and one SSE shaking table tests for dehydrogenation fan were performed by using the artificial seismic waves as the seismic inputs along the orthogonal axis simultaneity.Operating function of dehydrogenation fan was monitored and observed during all seismic tests,and performance indexes of dehydrogenation fan were compared before and after seismic tests.The results show that the structural integrity and operating function of the dehydrogenation fan are perfect during all seismic tests;and the performance indexes of the dehydrogenation fan can remain consistent before and after seismic tests;the seismic performance of the dehydrogenation fan can satisfy relevant technical requirements.
Seismic performance of the dehydrogenation fan for nuclear power plants was evaluated based on the shaking table test of earthquake simulation.Dynamic characteristics including the orthogonal tri-axial fundamental frequencies and equivalent damping ratios were measured by the white noise scanning method.Artificial seismic waves were generated corresponding to the floor acceleration response spectra for nuclear power plants.Furthermore,five OBE and one SSE shaking table tests for dehydrogenation fan were performed by using the artificial seismic waves as the seismic inputs along the orthogonal axis simultaneity.Operating function of dehydrogenation fan was monitored and observed during all seismic tests,and performance indexes of dehydrogenation fan were compared before and after seismic tests.The results show that the structural integrity and operating function of the dehydrogenation fan are perfect during all seismic tests;and the performance indexes of the dehydrogenation fan can remain consistent before and after seismic tests;the seismic performance of the dehydrogenation fan can satisfy relevant technical requirements.
引文
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[2]刘永昌,孙柏涛.核电站用机电设备抗震性能试验鉴定若干问题[J].地震工程与工程振动,1999,19(3):68-73.
[3]方庆贤.核电厂设备抗震鉴定的审评[J].核动力工程,1995,16(5):394-400.
[4]杨仁安,赵国玺.核电站1E级设备的抗震鉴定试验[J].核动力工程,1988,9(5):23-28.
[5]GB50267-97.核电厂抗震设计规范[S].
[6]HAF J0053.核设备抗震鉴定试验指南[S].
[7]GB13625-92.核电厂安全系统电气设备抗震鉴定[S].
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