Test Method for Complex Surface-Underwater Conditions of Deep-Sea Special Pressure Structure

CHEN Shagu; GAO Yuan; WU Zhirui; WANG Kun; ZHOU Cheng

doi:10.11993/j.issn.2096-3920.2024-0153

Volume 33 Issue 4

Aug 2025

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Article Navigation > Journal of Unmanned Undersea Systems > 2025 > 33(4): 691-698

CHEN Shagu, GAO Yuan, WU Zhirui, WANG Kun, ZHOU Cheng. Test Method for Complex Surface-Underwater Conditions of Deep-Sea Special Pressure Structure[J]. Journal of Unmanned Undersea Systems, 2025, 33(4): 691-698. doi: 10.11993/j.issn.2096-3920.2024-0153

Citation:

CHEN Shagu, GAO Yuan, WU Zhirui, WANG Kun, ZHOU Cheng. Test Method for Complex Surface-Underwater Conditions of Deep-Sea Special Pressure Structure[J]. Journal of Unmanned Undersea Systems, 2025, 33(4): 691-698. doi: 10.11993/j.issn.2096-3920.2024-0153

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Test Method for Complex Surface-Underwater Conditions of Deep-Sea Special Pressure Structure

doi: 10.11993/j.issn.2096-3920.2024-0153

China Ship Scientific Research Center, National Key Laboratory of Ship Structural Safety, Wuxi 214082, China

Received Date: 2024-11-08
Accepted Date: 2025-02-08
Rev Recd Date: 2025-01-01

Available Online: 2025-03-11

Abstract

Abstract

The separable head cover is a special pressure structure used in deep-sea unmanned systems that must balance long-term underwater pressure resistance with rapid separation when on the water surface. In order to study the overall performance of a deep-sea special pressure structure under complex surface-underwater conditions, a full-scale structural model of the separable head cover was developed for pressure and separation testing. Firstly, in response to the testing requirements for long-term seawater pressure environments during underwater operation, this study, based on the existing Chinese deep-sea environment simulation systems, proposed a test method that simulated coupled deep seawater-pressure conditions using a cabin device with skin balloons. Furthermore, in response to the testing requirements for rapid separation of the separable head cover after surfacing(in air), a safe and reliable inclined flange connection structure model rapid separation testing system was established. The test results of the full-scale model of the separable head cover show that the proposed testing method for complex surface–underwater conditions of a special pressure structure is reasonable and feasible. It can not only be used for pressure and separation testing of the separable head cover but also provide reference for the design and testing of similar pressure structures in other deep-sea equipment.
- special pressure structure,
- separable head cover,
- deep-sea unmanned system,
- full-scale model,
- pressure test,
- separation test

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References(20)

References

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