Key Technology Analysis of Underwater Wet-mate Photoelectric Hybrid Connectors

CHEN Xueyong; XIA Renshan; SUN Xiaojun; ZONG Xiaoming; CAO Yuliang

doi:10.13756/j.gtxyj.2025.250088

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Key Technology Analysis of Underwater Wet-mate Photoelectric Hybrid Connectors

更新时间：2025-08-16

- Key Technology Analysis of Underwater Wet-mate Photoelectric Hybrid Connectors
- Study on Optical Communications Issue 4, (2025)
- 作者机构：
  
  中航光电科技股份有限公司，河南　洛阳　471000
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2025.250088
  CLC： TP303
- Received：12 March 2025，
  
  Revised：14 April 2025，
  
  Published：10 August 2025
- 稿件说明：
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陈学永，夏仁善，孙晓军，等. 水下湿插拔光电混装连接器关键技术分析[J]. 光通信研究，2025(4): 250088.

Chen X Y, Xia R S, Sun X J, et al. Key Technology Analysis of Underwater Wet-mate Photoelectric Hybrid Connectors[J]. Study on Optical Communications, 2025(4): 250088.
陈学永，夏仁善，孙晓军，等. 水下湿插拔光电混装连接器关键技术分析[J]. 光通信研究，2025(4): 250088. DOI： 10.13756/j.gtxyj.2025.250088.

Chen X Y, Xia R S, Sun X J, et al. Key Technology Analysis of Underwater Wet-mate Photoelectric Hybrid Connectors[J]. Study on Optical Communications, 2025(4): 250088. DOI： 10.13756/j.gtxyj.2025.250088.

摘要

【目的】

在构建大型海底工程水下互联项目时，水下湿插拔光电混装连接器是其核心器件，为了打破国外技术和产品垄断，实现自主可控，文章对其关键技术进行了分析并进行了产品研制。

【方法】

文章采用等压平衡、旋转密封、充油缆密封连接、多级引导精准对接与到位识别、非接触式光接触件和光纤调芯等关键技术，研制出了水下湿插拔光电混装连接器，并对其进行了高压水下插拔试验、充油缆的振荡飞线和飞线拉力试验以及最大偏移插拔试验。同时，对水下湿插拔连接器的关键静、动密封问题以及动态插拔过程中的接触压力进行了仿真分析。

【结果】

高压水下插拔试验结果表明，静水压力为45 MPa时，水下湿插拔连接器的插头和插座在插拔100次后，连接器的插入损耗（0.5 dB）及绝缘电阻（≥50 GΩ）均合格；充油缆锥面密封结构抗拉能力及端接可靠性均能满足要求。仿真分析结果表明，水下湿插拔连接器在动态插拔过程中滚轴的接触压力始终大于水压，能始终保持动密封，不发生泄漏。对于静密封结构，当水压为70 MPa时，不会造成海水泄漏进设备内部，但随着间隙的增大，O形圈变形、所受应力及其与壁面的接触压力均呈增大趋势，对于动密封结构，插针运动速度越快，海水压力越大，其泄漏量也越大，试验验证结果与仿真情况具有较好的一致性。

【结论】

文章所得结果可为水下湿插拔光电混装连接器的设计提供理论指导。

Abstract

【Objective】

In the construction of large-scale underwater interconnection projects for submarine engineering

the underwater wet-mateable hybrid optoelectronic connector is a key component. To break the monopoly of foreign technologies and products and achieve self-reliance and controllability

the paper analyzes its key technologies and develops the product.

【Methods】

The paper employs key technologies such as isobaric balance

rotary sealing

oil-filled cable sealing connection

multi-stage guided precise docking and position recognition

non-contact optical contacts

and fiber core adjustment to develop an underwater wet-mateable hybrid optoelectronic connector. The connector is subjected to high-pressure underwater mating and unmating tests

oscillation and tension tests of oil-filled cables

and maximum offset mating and unmating tests. Additionally

the paper conducts simulation analyses on the critical static and dynamic sealing issues of the underwater wet-mateable connector

as well as the contact pressure during dynamic mating and unmating processes.

【Results】

The test results show that the insertion loss (0.5 dB) and insulation resistance (≥50 GΩ) of the connector are qualified after 100 times of plugging and unplugging under the pressure of 45 MPa. Tensile capacity and end connection reliability of oil-filled cable cone sealing structure meet the requirements. The simulation analysis results indicate that during the dynamic mating and unmating process of the underwater wet-mateable connector

the contact pressure of the rolling shaft is always greater than the water pressure

ensuring dynamic sealing and preventing leakage. For static sealing structures

when the water pressure is 70 MPa

there will be no seawater leakage into the equipment interior. However

as the gap increases

the deformation

stress

and contact pressure of the Oring with the wall surface all show an increasing trend. For dynamic sealing structures

the faster the pin movement speed

the greater the seawater pressure

and the greater the leakage amount.

【Conclusion】

The obtained results in the paper can provide theoretical guidance for the design of underwater wet plugin optoelectronic hybrid connectors.

关键词

Keywords

references

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