水下电连接器密封和环境补偿结构设计与分析

水下电连接器工作水深为1 500 m时，公头和母头插拔面临巨大的内外压力差和动密封难度大的难题。设计的插拔动密封结构，将残余海水剐蹭并隔离在前密封外，使插座充油腔始终保持密封状态；设计的环境补偿结构降低了内外压力差，从而降低插拔难度。采用厚壁圆筒结构Lame公式和畸变能理论，对水下电连接器进行危险截面计算与校核。基于ANSYS软件中的Workbench平台建立重点零件的三维网格模型。对该模型施加压力并进行仿真分析，得到形变云图和应力云图，证明该水下电连接器满足水深1 500 m工作的技术要求。

Design and Analysis of Sealing and Environmental Compensation Structure of Underwater Electrical Flying Lead

When the working water depth of underwater electrical flying lead is 1 500 m, the plugging and unplugging of the male head and the female head face the problems of huge internal and external pressure differences and difficult dynamic sealing. The newly designed plug-in dynamic seal structure scraped the residual seawater and isolates it from the front seal so that the oil-filling cavity of the plug seat can always be sealed. The environmental compensation structure reduced the internal and external pressure difference, so as to reduce the difficulty of plugging. The dangerous section of underwater electrical flying lead was calculated and checked by using the lame formula of thick wall cylinder structure and distortion energy theory. Based on the workbench platform in ANSYS software, the three-dimensional mesh model of key parts was established. The pressure was applied to the model and simulated, and the deformation nephogram, stress nephogram were obtained. It is proved that the underwater electrical flying lead can meet the technical requirements of working in a water depth of 1 500 m.