Jiangsu Haifa Machinery Manufacturing Co., Ltd.

As a core critical equipment in hydrogen energy storage, transportation, and liquid hydrogen refueling systems, high-pressure liquid hydrogen pumps widely used in aerospace, hydrogen-powered vehicles, and large-scale hydrogen storage projects. Since liquid hydrogen has a temperature as low as -253°C, and the system must also withstand high-pressure operating conditions, extremely high demands are placed on the pump's materials, seals, drive, and control systems. The research and development process must overcome multiple key technical bottlenecks.

First, research on hydrogen-compatible materials is a crucial foundation for high-pressure liquid hydrogen pumps. Ordinary metal materials are prone to "hydrogen embrittlement" in a hydrogen environment, leading to reduced material strength or even cracking. Therefore, special alloy materials that combine low-temperature toughness with resistance to hydrogen embrittlement need to be developed to ensure the long-term stable operation of the pump body, impeller, and key pressure-bearing components.

Second, precise thermal management is also a core challenge in the design of liquid hydrogen pumps. Liquid hydrogen is highly susceptible to vaporization due to heat intrusion from the environment. Once cavitation occurs, it not only reduces pump efficiency but may also lead to equipment failure. Therefore, precise control of internal heat within the pump is required through multi-layer insulation structures, low-temperature cold shield designs, and efficient cooling circulation systems.

In addition, spool valve dynamic control technology and low-temperature high-pressure sealing technology are equally critical. Under high-speed operating conditions, the spool valve must achieve precise regulation to ensure stable output of liquid hydrogen flow and pressure. At the same time, the sealing system must accommodate both ultra-low temperature and high-pressure conditions to prevent liquid hydrogen leakage. To address this challenge, advanced technologies such as metal bellows seals and low-temperature magnetic fluid seals are typically employed. In terms of the drive system, high-pressure liquid hydrogen pumps also require high-precision of motor drives, achieving high efficiency and low vibration operation through variable frequency control and high-speed motor technology, thereby providing key equipment support for the future development of the liquid hydrogen industry.

Jiangsu Haifa Machinery Manufacturing Co., Ltd. was restructured from Jiangsu Ligong Group Co., Ltd., which was established in 1958, and the Jingjiang Stainless Steel Pump and Valve Factory of the Iron and Steel Research Institute of the Ministry of Metallurgical Industry. The company mainly produces API610 chemical process pumps - OH1 pumps, OH2 pumps, OH3 pumps, OH4 pumps, BB1 pumps, BB2 pumps, BB3, BB4, BB5 multi-stage pumps, VS1, VS4, VS5, VS6 barrel-type pumps, HES chemical process pumps, chemical pumps, petrochemical pumps, sixth-generation ultra-low carbon stainless steel high-quality leak-proof molten urea pumps, urea hydrolyzer feed pumps, high-temperature asphalt pumps, pitot tube pumps, rotary jet pumps, molten salt pumps, vertical submerged pumps, magnetic drive pumps, low-temperature liquid hydrogen pumps, high-pressure liquid hydrogen pumps, high-temperature nitric acid magnetic drive pumps, magnetic drive pumps for conveying solid-containing media, industrial pumps, canned motor pumps, slurry pumps, titanium tetrachloride pumps, strong self-priming pumps, lined fluorine pumps, clamp-lined fluorine pumps, leak-proof pumps, alkali pumps, pumps, geothermal pumps, oil pumps, flow pumps, printing and dyeing pumps, dyeing and finishing pumps, Ti alloy pumps, C-276 material, Hastelloy, 316L, forced circulation pumps, special pumps for filter presses, refrigerant pumps, long-shaft vertical submerged pumps, CQC first-level energy efficiency chemical pumps, high-pressure descaling industrial pumps, and Chinese chemical pumps. www.jslgpump.com Contact number: 13905263417 E-mail: jslgpump@gmail.com-mail: jsareva@163.com