Numerical Analysis of Flow-Induced Resonance in Pilot-Operated Molten Salt Control Valves

Shuxun Li, Yu Zhao (), Jianzheng Zhang, Linxia Yang and Xinhao Liu
Additional contact information
Shuxun Li: School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
Yu Zhao: School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
Jianzheng Zhang: School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
Linxia Yang: School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China
Xinhao Liu: School of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China

Energies, 2025, vol. 18, issue 17, 1-28

Abstract: To address the problem of flow-induced resonance in the valve core assembly of a pilot-operated molten salt regulating valve in a concentrated solar thermal power generation molten salt energy storage system under high pressure differential and high flow rate conditions, the flow-induced vibration characteristics of the pilot-operated molten salt regulating valve were analyzed using computational fluid dynamics (CFD) and fluid–structure interaction modal analysis. The vibration characteristics of the valve core assembly under the excitation force of the molten salt medium were analyzed using the harmonic response method, and the influence of different parameters on the valve core assembly’s vibration characteristics was studied. The results show that under typical operating openings, the first six modal frequencies of the valve core motion assembly are not close to the fluid excitation frequency, indicating that flow-induced resonance does not occur. The maximum vibration stress and displacement of the valve core assembly decrease with increasing damping ratio. With increasing pressure differential, the maximum stress and maximum amplitude of the valve core assembly increase. By changing the valve stem constraint conditions, the vibration stress of the valve core assembly can be reduced. This study provides a reference for the design of flow-induced vibration suppression for pilot-operated molten salt regulating valves and provides guidance for the safe operation of concentrated solar thermal power generation molten salt regulating valves under high pressure differential and high flow rate conditions.

Keywords: pilot-operated molten salt regulating valve; fluid–structure interaction; wet mode; flow-induced resonance; harmonic response; resonance analysis; solar thermal power generation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/17/4631/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/17/4631/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:17:p:4631-:d:1738696

Access Statistics for this article

Energies is currently edited by Ms. Cassie Shen

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().