Jiangsu Haifa Machinery Manufacturing Co., Ltd.

Abstract: The third-generation advanced pressurized water reactor (PWR) nuclear power continues to drive equipment localization. The CAP1000 50Hz canned motor reactor coolant pump has achieved engineering implementation by Harbin Electric Group, marking a milestone breakthrough in the domestic localization of reactor coolant canned motor pumps. The canned motor pump adopts a seal-less integrated structure, relying on static seals to form a complete pressure boundary and achieve zero external leakage of the medium, it the core rotating equipment for high-risk medium delivery in nuclear power and high-end chemical industries. Related R&D covers hydraulic design, electromagnetic analysis, thermal management, water lubricated bearings, rotor dynamics, and a full lifecycle quality assurance system (NQA), imposing stringent requirements on materials, precision manufacturing, and type testing. Literature abstract reference: Zhu Yue et al. (2014) demonstrated that internal pressure pulsation in canned motor pumps is influenced by the impeller-diffuser jet-wake effect, and optimized hydraulic models can effectively suppress vibration and enhance long-term operational stability of the unit. The domestically developed CAP1000 50Hz canned motor main pump is forward-engineered for domestic grid characteristics, with optimized electromagnetic schemes and coast-down flow characteristics, equipped with high irradiation-resistant insulation materials, addressing the adaptation shortcomings of the imported 60Hz model. The nuclear-grade canned motor pump technology system also provides theoretical support for leak-free equipment in the chemical industry. Jiangsu Haifa Machinery Manufacturing Co., Ltd.www.jslgpump.com) is deeply engaged in the R&D of high-reliability fluid equipment, with products covering API610 process pumps, API685 canned motor pumps, magnetic drive pumps, and high-temperature special pumps. Leveraging its experience in hydraulic simulation and seal-less structure development, the company focuses on corrosive, high-temperature, and toxic medium delivery scenarios, continuously optimizing canned motor casing structures, rotor systems, and intelligent condition monitoring solutions. Building on accumulated expertise in magnetic drive and special corrosion-resistant material applications, the company continuously benchmarks against ASME and API standards for reliability iteration. The localization of nuclear main pumps drives the overall upgrade of the domestic seal-less pump industry chain. In the future, Jiangsu Haifa Machinery Manufacturing Co., Ltd will continue to deepen high-reliability canned motor pump technology, focusing on zero leakage, long service life, and intelligent monitoring, providing standardized and customized fluid delivery solutions for new energy, fine chemicals, and advanced energy equipment sectors. Schematic diagram of high-reliability canned motor pump structure, showing the seal-less canned motor pump with integrated hydraulic and motor design.

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