Background of the Collaboration

The National University of Defense Technology has long been deeply engaged in national key research projects spanning the development of underwater intelligent systems, collaborative operations of unmanned underwater swarms, and deep-sea environmental sensing. It boasts world‑class research capabilities in overall system design, intelligent control, and system integration for underwater platforms. During the practical implementation of these projects, research prototypes and experimental equipment urgently require specialized underwater pressure vessels that deliver high performance, exceptional reliability, and adaptability to a wide range of operating depths. At the same time, stringent requirements are imposed on dimensional accuracy, pressure resistance, waterproofing ratings, lightweight structural design, and customized compatibility—criteria that off‑the‑shelf sealing products cannot readily meet, given the demanding standards of military‑grade research and testing.
Hesi Technology specializes in the R&D and manufacturing of precision underwater sealing components, possessing mature technologies for seal structure design, pressure-resistant hull machining, and comprehensive waterproof encapsulation. It offers end-to-end services spanning solution customization, structural design, precision machining, and environmental testing, enabling on-demand development and production of underwater sealing chambers tailored to varying depths, specifications, and installation configurations. This allows Hesi Technology to precisely meet the customized, highly reliable, and rapidly deliverable requirements of university research projects. In response to both industry growth and scientific research challenges, the two parties have established a deep collaboration, officially launching joint R&D and supply cooperation on supporting projects for underwater sealing chambers.

Collaboration Project

The core collaborative project between the two parties is a customized, specialized underwater sealing chamber system tailored for the underwater research equipment of the National University of Defense Technology.

• Customized structural R&D and design: By integrating the internal component layouts, installation spaces, and operating depths of various underwater test equipment, unmanned underwater vehicles, and deep-sea monitoring devices from National University of Defense Technology, Hesi Technology conducts one‑on‑one structural optimization, determining the sealed cabin’s external dimensions, hull material, end‑cap sealing configuration, cable‑exit sealing interfaces, and vibration‑damping reinforcement structure, thereby ensuring perfect compatibility with the overall equipment architecture.
• Mass‑production of pressure‑resistant, multi‑condition sealed compartments: In accordance with scientific research and testing standards, we have developed and manufactured two major categories of underwater sealed compartments—shallow‑water conventional types and mid‑to‑deep‑water high‑pressure types—rigorously meeting the demanding operational requirements of long‑term submersion, deep‑water pressure resistance, underwater vibration, and ocean current impact. All cable‑entry points feature an integrated watertight sealing structure, effectively preventing water ingress, leaks, and moisture damage to the wiring.
• Environmental Reliability Test Co-Optimization: Hesi Technology, in collaboration with the National University of Defense Technology, has conducted underwater pressure simulation tests, salt-spray corrosion tests, high‑and‑low temperature environment tests, and long-term underwater static storage tests. Based on the test feedback, it has continuously optimized the sealing process, shell strength, and the materials of sealing components, thereby steadily enhancing the overall stability of the sealed compartment and meeting military‑grade standards for scientific research and testing.
• Full‑cycle supply and technical support services: In accordance with the project’s R&D schedule, we will deliver test‑prototype pressure chambers and production‑ready pressure chamber units in phased batches, while providing installation guidance, pressure‑chamber commissioning, on‑site adaptation, and other technical support to ensure the smooth execution of all underwater research and testing activities at USTC.

Collaborative Outcomes

Hesi Technology’s custom‑made underwater sealing chambers are fully compatible with a range of research equipment, including the National University of Defense Technology’s unmanned underwater vehicles, deep-sea exploration devices, and underwater swarm testing platforms. The products have all passed rigorous in‑water testing for sealing performance, pressure resistance, and overall stability, successfully addressing the challenge of waterproofing and protecting internal components in scientific instruments and ensuring the stable and orderly conduct of various underwater scientific experiments.
Through this collaborative project on underwater pressure‑sealed cabin systems, both parties have further strengthened their cooperative foundation, establishing a robust model of deep integration between university research needs and enterprise precision manufacturing. Moving forward, the two sides will continue to expand their collaboration in areas such as underwater sealing and protection, subsea structural support, and deep‑sea waterproof components, jointly advancing the technological upgrading of underwater support products and providing solid, reliable technical support for the development of China’s underwater defense equipment and deep‑sea marine scientific research.