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20171221065710XJzJ.jpg

水下永动机器人现身

科技日报 2017-12-21 作者:付毅飞

  记者20日从中船重工集团获悉,我国研制出国内首个深海型海洋温差自供能漂流浮标样机,在理论上实现了“水下永动机器人”。其整体技术处于国际领先水平,将用于全球海洋观测计划(Argo计划)。

  Argo计划旨在快速、准确、大范围收集全球海洋上层(从海面到2000米深度)的海水剖面资料。该计划构想在全球大洋中每隔3个经纬度布放一个浮标,由数千个浮标组成庞大的海洋观测网,测量海水温度、盐度、压力等。

  这种浮标需具备成本低、寿命长、不易损坏、无需日常维护等特点,才能长期稳定获取海洋资料。但目前的浮标全部采用锂电池供电,成本高,工作寿命只有3至5年,失效后还会造成污染。

  为了给设备“延寿”并降低污染,科学家产生了借助海洋可再生能源的想法。据中船重工710所高级工程师田振华介绍,海洋中蕴含着巨大能量,以潮汐能、波浪能、温差能等形式存在。其中,温差能是利用水体垂向温度差异汲取能量,其在全球海洋能中储量最大,具有可再生、清洁、输出波动小等优点,尤其适合在大洋中做垂向运动的Argo浮标。但该能源转化技术超前、难度极高,涉及材料、控制、机电、系统工程等众多学科领域。

  作为国内唯一通过Argo组织认证的浮标供应商,710所联手国防科技大学气象海洋学院,历经4年攻克了海洋温差发电、相变点控制、相变管储能等关键技术,取得多项专利。制成的浮标样机可以搭载CTD(温盐深)、溶解氧、pH、声学、光学等传感器。其核心技术可为我国海洋探测装备提供取之不尽的动力。

责任编辑:杨茗

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