摘要
随着新能源等新兴产业的高速发展,金属矿产资源需求激增,国内外争相发展深海采矿技术。基于竖轴漩涡的水动力特性,设计了一种带有4个切向射流喷嘴的吸盘式水力集矿装置,提出应用切向射流在集矿装置内诱导生成竖轴漩涡的新集矿方法。开展水力集矿模型试验,研究竖轴漩涡集矿流场流速分布特征;分析低、中、高3种旋流度流态下,集矿流量对矿粒运动轨迹和采集率的影响。结果表明:矿粒起动轨迹随着旋流度的增加,逐渐从混乱无序转向明显的圆周运动;在特定集矿流态下,矿粒采集率随集矿流量的增加不断提高;当矿粒采集率超过90%时,集矿流量需求随着旋流度的增加而减小。通过采矿车原理样机水池测试,初步验证了集矿装置的集矿性能,可为集矿装备的设计研发与论证提供借鉴。
As the development of new energy and other industries accelerate,the demand for metallic mineral resources increases rapidly,leading countries worldwide to race towards developing deep-sea mining technologies.Utilizing the hydrodynamic characteristics of a vertical vortex,a sucker-shaped hydraulic nodule pick-up device fitted with four tangential jet nozzles was designed with the purpose to generate a vertical vortex via the application of tangential jets.Experiments were conducted to investigate the flow velocity distribution characteristics of the vertical vortex collecting flow field,as well as analyze the impact of the flow discharge on the particle trajectory and pick-up efficiency in three different collecting flow models of low,medium,and high swirling strength.Results indicate that as swirling strength increases,the trajectory transitions from a disorganized state to a well-defined circular motion,with the pick-up efficiency rising in correlation with the flow demand under a certain collecting flow model.When the pick-up efficiency exceeds 90%,the necessity of collecting flow reduces as the swirling strength rises.A trial of the mining vehicle prototype was conducted to initially verify the nodule-collecting capabilities of the device,thereby providing a basis for the design and demonstration of the nodule pick-up device.
作者
刘孜涵
赵国成
肖龙飞
LIU Zihan;ZHAO Guocheng;XIAO Longfei(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Marine Equipment,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《海洋工程》
CSCD
北大核心
2023年第5期161-168,共8页
The Ocean Engineering
基金
国家自然科学基金资助项目(52031006)
上海市战略性新兴产业重大项目:深海矿产资源开发关键技术研究与装备研制
上海市科学技术委员会“科技创新行动计划”启明星项目(23YF1419800)。
关键词
深海采矿
水力集矿
采集率
集矿流场
竖轴漩涡
deep-sea mining
hydraulic collecting
pick-up efficiency
collection flow field
vertical axis vortex
