光热电站长轴多级熔盐泵模态抗震计算与分析

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (2) : 148-155.

论文

刘永1，程道俊2，王德忠1，张继革1，胡耀钰1，冉红娟1

作者信息 +

Seismic calculation and analysis of a long-axis multi-stage molten salt pump used in solar thermal power station

LIU Yong1,CHENG Daojun2,WANG Dezhong1,ZHANG Jige1,HU Yaoyu1,RAN Hongjuan1

Author information +

文章历史 +

摘要

太阳能光热电站熔盐泵（文中简称熔盐泵）结构特殊、运行环境恶劣，对安全和性能要求很高，模态计算、抗震分析是熔盐泵安全评定的重要环节。使用ANSYS WORKBENCH平台，在充分考虑自重、熔盐泵附加质量、平台约束刚度矩阵等因素的条件下计算不同熔盐液位工况下熔盐泵的模态特性以及对核电安全停堆级地震（SSE）的响应情况，并采用核电行业抗震标准完成分析评定。研究结果表明：熔盐泵在不同液位工况下的模态特性均能较好地满足避免共振的要求；在SSE级地震响应中末节排水管应力较大，是熔盐泵设计开发中须要重点关注的地方。填补了国内太阳能光热电站熔盐泵模态、抗震研究的空白，为后续研究工作提供了有价值的参考。

Abstract

he solar thermal power station molten salt pump has a special structure and works in a harsh operating environment, so it needs high requirements in safety and performance.The modal calculation and seismic analysis are important links for the safety assessment of molten salt pumps.Using the ANSYS WORKBENCH platform, the modal characteristics and the seismic response of a long-axis multi-stage molten salt pump were both calculated under the conditions of pump self-weight, molten salt additional mass, and platform constraint stiffness matrix.The response under SSE was analyzed and assessed using the seismic standards of the nuclear power industry.The results show that the modal characteristics of the molten salt pump can meet the requirements of avoiding resonance under different liquid level conditions.Under the SSE-class seismic excitation, the response, stress in the last drain pipe is the largest, which is a key point in the design of the molten salt pump.The study fills the blank of modal and seismic research of the molten salt pump used in domestic solar thermal power stations, and provides a valuable reference for subsequent research work.

导出引用

刘永1，程道俊2，王德忠1，张继革1，胡耀钰1，冉红娟1. 光热电站长轴多级熔盐泵模态抗震计算与分析[J]. 振动与冲击, 2021, 40(2): 148-155

LIU Yong1,CHENG Daojun2,WANG Dezhong1,ZHANG Jige1,HU Yaoyu1,RAN Hongjuan1. Seismic calculation and analysis of a long-axis multi-stage molten salt pump used in solar thermal power station[J]. Journal of Vibration and Shock, 2021, 40(2): 148-155

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