核级风机抗震分析与试验方法研究

The Study on Seismic Analysis and Test Method of Nuclear Grade Fan

针对某核级漩涡工艺风机开展了抗震分析和抗震试验研究,在试验基础上,得到了该类风机的抗震分析方法。首先建立核级风机有限元计算模型,通过模态分析得到风机的主要模态频率,并与动态特性探查试验结果进行对比;然后对比反应谱法分析计算与抗震试验中测得的应变结果。结果表明本文所采用的抗震分析方法是合理的,能够得到准确的地震响应结果。本文研究为采用抗震分析方法替代抗震试验提供了重要的依据。

In this paper,the seismic analysis and seismic test of a nuclear vortex process fan are carried out.Based on the test,the seismic analysis method of this kind of fan is obtained.Firstly,the finite element model of the fan is established,and the main modal frequencies of the fan are obtained through modal analysis,which are compared with the dynamic characteristic detection test results;Then,the strain of the fan is analyzed and calculated by the response spectrum method,and compared with the strain results measured in the seismic test.The results show that the seismic analysis method used in this paper is reasonable and can obtain accurate seismic response results,so it can be considered as an alternative to the seismic test of this kind of fan.