核电厂离线啜吸检测装置抗震性能分析与评定

Seismic Analysis and Evaluation of Offline Sipping Detection Device Used in Nuclear Power Plant

啜吸检测装置是核电厂燃料操作与贮存系统中的检查设备,分析其在地震载荷下的安全性能具有重要的意义。为了验证设备在地震工况下的安全性和可靠性,校核设备是否满足强度要求,应用有限元软件ABAQUS对啜吸装置进行了建模和抗震计算分析。介绍了设备结构、载荷组合和使用限制、地震反应谱法的分析过程及模型边界条件设定,采用反应谱法计算得到了设备在地震载荷下的响应,并依据相关规范对设备主要部件(筒体、结构件、定位销和锚固螺栓)在静态载荷、地震等多种工况载荷组合作用下的应力进行了强度校核和评定。结果表明,啜吸装置的结构强度满足规范要求,在地震工况载荷作用下能够保证设备结构的完整性并可靠运行。通过抗震计算分析,为啜吸装置优化设计提供了参考依据,对保证核电厂设备的正常可靠运行具有重要意义。

The sipping detection device is the inspection equipment in the fuel operation and storage system of nuclear power plant,and it is very important to analyze its safety performance under seismic load.In order to verify the safety and reliability of the equipment under seismic conditions,check whether the equipment meets the intensity requirements,the finite element software ABAQUS is used to model the sipping device and analyze the seismic calculation.The equipment structure,load combination and usage limit,the analysis process of seismic response spectrum method and the model boundary condition setting are introduced,and the equipment response is obtained under seismic load by using response spectrum method,and the stress of the equipment(cylinder,structure,positioning pin and anchor bolts) under the action of multiple load combinations is checked and evaluated according to the relevant specifications.The results show that the structural strength of the sipping device meets the specification requirements,and can ensure the structural integrity and reliable operation of the equipment under the seismic working load.Through the analysis,it provides a reference for the optimal design of the sipping device,which is of great significance to ensure the normal and reliable operation of the nuclear power plant equipment.