开孔包络耐压球舱强度校核与压力试验

Strength proof and pressure testing of open-hole envelope pressure ball cabin

针对耐压球舱的强度分析问题,常规的球舱强度校核以及压力试验仅考虑耐压球舱,没有涉及到球舱边界条件对强度的影响。由于全海深AUV工作于11000 m的大深度,本文在对开孔耐压玻璃球舱的强度校核时提出采用从耐压球舱的防撞外壳中抽离出假设球壳,作为耐压球舱的边界条件。同时计入开孔处加强结构对耐压舱强度的影响,补强因开孔而削弱结构强度,以此对耐压球舱做强度分析。此外,在以耐压球舱的形式对全海深AUV耐压设备进行压力试验。研究内容对大深度潜水器的耐压球舱的强度校核具有重要意义。结果表明:所设计的耐压球舱完全能承受全海深11000 m处的压力,满足设计的需求。

Aiming at the strength proof of pressure ball cabins,the conventional ball cabin strength check and pressure test are only for pressure ball cabins,and the impact of ball cabin boundary conditions on strength is not involved.As the full ocean depth AUV works at a large depth of 11000 m,this paper proposes to extract the hypothetical spherical shell from the crash shell of the pressure-resistant ball cabin as the boundary condition of the pressure-resistant ball cabin in the strength proof of the open-hole envelope pressure ball cabin.At the same time,the influence of the reinforcement structure on the strength of the pressure-resistant chamber is taken into account,and the reinforcement strength is weakened by the opening,thereby analyzing the strength of the pressure-resistant ball cabin.In addition,the pressure test of the full-sea deep AUV pressure-resistant equipment was carried out in the form of a pressure-resistant ball cabin.The research content is of great significance for the strength check of the pressure tank of the large depth submersible.The results show that the designed pressure ball chamber can fully withstand the pressure of 11000 m at the depth of the sea,meeting the design requirements.