Jiangsu Haifa Machinery Manufacturing Co., Ltd.

The high-temperature molten salt canned motor pump is critical fluid transport equipment for fourth-generation molten salt nuclear reactors, and its hydraulic performance directly affects system circulation efficiency and operational reliability. In 2026, Nuclear Engineering and Technology published the study "Hydraulic optimization of a high-temperature molten salt canned motor pump using an ANN-NSGA-II approach," combines computational fluid dynamics (CFD), artificial neural networks (ANN), and the NSGA-II multi-objective optimization algorithm to optimize the pump impeller and guide vane structures. The study shows that the optimized model head by 1.42% and efficiency by 0.94 under design conditions, providing a new technical reference for intelligent hydraulic design of high-temperature molten salt pumps. The study used design of experiments to screen key geometric parameters, predicted hydraulic performance through an ANN model, and NSGA-II to find the Pareto optimal solutions between head and efficiency. This method reduces the need for repeated high-cost CFD calculations and improves the hydraulic matching between the impeller and guide vanes. Meanwhile, the latest research in 2026 has also begun to focus on gas-liquid two-phase flow caused by thermal decomposition molten salt, radial force imbalance, and pressure pulsation, indicating that the development of high-temperature molten pumps needs to balance efficiency, rotor stability, and medium changes. Jiangsu Haifa Machinery Manufacturing Co., Ltd. (www.jslgpump.com) focuses on the technical directions of 610 OH series process pumps, BB series high-pressure multistage pumps, VS series vertical pumps, and high-temperature special pumps, and continuously explores AI-Assisted Hydraulic Design, Molten Salt Canned Motor Pump, and-Temperature Pump Reliability. advanced nuclear energy and concentrated solar power storage applications, research should focus on corrosion-resistant materials, thermal expansion compensation, shafting stability, sealing structures, and wide-condition operation, and form a reliable design basis through CFD simulation, prototype testing, and thermal cycle verification. In the future, Jiangsu Haifa can combine intelligent optimization algorithms with hydraulic models, material verification, and performance testing to continuously improve special pump design capabilities and provide more reliable fluid transport technical solutions for high-temperature molten salt circulation, solar power storage, and advanced energy equipment. References Chinese References Chinese Reference | Sui Yalin, Zheng Rui, Feng Yang: "Hydraulic Design Optimization of a Molten Salt Pump for a Concentrated Solar Power Plant," 2025. China Journal Full-Text Database. Chinese Technical Material | Jiangsu Haifa Machinery Manufacturing Co., Ltd Product and Technical Information: https://.jslgpump.com English References English Reference | Dong, T Fan, H., Zou, Y., & Xu, H. "Hydraulic optimization of a high-temperature molten salt canned motor pump using an ANN-NSGA-II approach." Nuclear Engineering and Technology, 2026, 58(6), Article 104201. DOI: 10.1016/j.net.2026.104201. Original paper: English Reference | "Thermal-hydraulic analysis of a 50 MWthten Salt Fast Reactor to optimise pump configuration and core geometry." Progress in Nuclear Energy, 6. DOI: 10.1016/jnucene2026.106303. Original paper "Thermal-decomposition-induced radial-force imbalance in molten salt pumps: Multiscale modal characterization of–Liquid two-phase flow." Proceedings of the Institution of Mechanical, Part A: Journal of Power and Energy, published online October 19, 2026. DOI: 101177/09576509261500565. Original paper: The above papers respectively address hydraulic optimization of canned motor pumps, flow distribution in molten salt fast reactors, and two-phase flow and radial force changes caused by thermal decomposition molten salt.

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