摘要
为了研究深海采矿水下输送系统提升硬管选型设计的可靠性,以输送指标为设计输入,通过水动力学进行校核,根据多金属结核沉降速度确定提升硬管选用外径244.48 mm的P110钢级抗疲劳螺纹连接套管(壁厚20.24 mm),水池拖曳试验结果表明提升电泵上端硬管阻力系数为1.4,提升电泵下端硬管阻力系数为1.3。对水下输送系统按作业工况和布放工况分别进行水动力学计算,在海试作业环境下提升硬管安全系数满足API RP 2RD规范要求。在深海多金属结核采矿试验工程海上验收试验中,提升硬管满足各项输送指标要求,各接口间连接可靠,验证了提升硬管选型设计的合理性。
In order to explore the reliability of type selection in the design of lift pipe for underwater transport system in deep sea mining,hydrodynamic parameters were checked with transport indices as input for design.Based on the settling velocity of polymetallic nodules,anti⁃fatigue threaded sleeve of P110 steel,with outer diameter of 244.48 mm and wall thickness of 20.24 mm,was selected for lift pipe.And a towing test performed in a pool shows that the resistance drag coefficient is 1.4 for the lift pipe at the upper end of the pump and 1.3 at the lower end of the pump.Hydrodynamic parameters were calculated and analyzed for the underwater transport system according to working conditions and launching conditions,showing that the safety factor of lift pipe can meet the requirements of API RP 2RD Standard.In the deep⁃sea polymetallic nodules mining test project,lift pipe in the at⁃sea acceptance test,with reliable joint connection,could meet the requirement for each transporting parameter,which has verified that the type selection of lift pipe in the design is acceptable.
作者
张明
郑皓
李满红
李小艳
宋环峰
ZHANG Ming;ZHENG Hao;LI Manhong;LI Xiaoyan;SONG Huanfeng(State Key Laboratory of Exploitation and Utilization of Deep Sea Mineral Resources,Changsha Research Institute of Mining and Metallurgy Co Ltd,Changsha 410012,Hunan,China;Shanghai Branch of China Ship Scientific Research Center,Shanghai 200011,China)
出处
《矿冶工程》
CAS
北大核心
2023年第5期37-41,46,共6页
Mining and Metallurgical Engineering
基金
湖南省自然科学基金重大项目(2021JC0014)
中国五矿集团有限公司科技专项计划(2018ZXB06)。
关键词
深海采矿
水下输送系统
提升硬管
水动力学
管道输送
deep sea mining
underwater transport system
lift pipe
hydrodynamics
pipeline transport
