光热电站长轴多级熔盐泵模态抗震计算与分析

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...

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

The 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.