Test Method for Surface and Underwater Condition of Deep-sea Special Pressure Structure
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摘要: 分离头盖是深海无人系统的特种耐压结构, 需兼顾水下长期耐压与水面快速分离功能。为研究深海特种耐压结构水面-水下复杂工况综合性能, 研制了分离头盖实尺度结构模型开展水压试验和分离试验研究。首先, 针对分离头盖水下服役时面临的长周期海水压力环境试验工况需求, 基于国内现有的常规深海环境模拟试验系统, 提出了一种通过带皮囊球的舱室装置来实现大深度海水-压力耦合环境模拟的试验方法。再者, 针对分离头盖出水后的水面状态(空气中)快速分离试验工况需求, 建立了一套安全可靠的斜法兰连接结构模型快速分离试验系统。分离头盖实尺度模型试验结果表明, 论文提出的特种耐压结构水面-水下复杂工况试验方法合理可行, 不仅可用于分离头盖的水压试验和分离试验研究, 也可为其他深海装备类似耐压结构的相关设计与试验提供一定参考。Abstract: The head cover is a special pressure structure for deep-sea unmanned systems, which needs to balance long-term underwater pressure and rapid separation function on the water surface. In order to study the stress characteristics and separation performance of deep-sea special pressure structure under surface and underwater condition, full-scale model of the head cover was developed for hydraulic and separation testing. Firstly, based on the existing deep-sea environment simulation test system, a test method is proposed to simulate the deep seawater pressure environment using a cabin device with skin balloons in response to the long-term seawater pressure environment testing requirements faced by the head cover during underwater. Furthermore, a safe and reliable inclined flange connection structure model rapid separation test system was established to meet the separation test requirements of head cover when in the water surface state. The results of the full-scale model test showed that the special pressure structure surface and underwater condition test method is reasonable and feasible. It can not only be used for pressure test and separation test research of the head cover, but also provide some reference for the design and testing of similar pressure structures in other deep-sea equipment.
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Key words:
- head cover /
- special pressure structure /
- full-scale model /
- pressure test /
- separation test
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图 2 深海环境模拟试验装置组成简图
Figure 2. Composition of the deep-sea environment simulation test device
图 4 海水压力环境模拟试验原理图
Figure 4. Schematic diagram of seawater pressure environment simulation test
图 5 高压试验应变片防水密封方法
Figure 5. Waterproof sealing method for strain gauges in high pressure test
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