光热电站长轴多级熔盐泵模态抗震计算与分析

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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.

Key words： modal anti-seismic molten salt pump finite element analysis solar thermal power station

Received: 21 March 2019 Published: 28 January 2021

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	Articles by authors
	LIU Yong1
	CHENG Daojun2
	WANG Dezhong1
	ZHANG Jige1
	HU Yaoyu1
	RAN Hongjuan1

Cite this article:

LIU Yong1,CHENG Daojun2,WANG Dezhong1, et al. 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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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2021/V40/I2/148

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