复杂工况下深海采矿混输泵有限元分析  

Finite element analysis of mixed transport pump in deep-sea mining under complicated conditions

作　　者：王凯[1] 陆钇霖 刘厚林[1] 程智明 管禹 邹丽[2] 王磊[3] WANG Kai;LU Yilin;LIU Houlin;CHENG Zhiming;GUAN Yu;ZOU Li;WANG Lei(National Research Center of Pumps,Jiangsu University,Zhenjiang,Jiangsu 212013,China;School of Naval National Enginee-ring,Dalian University of Technology,Dalian,Shenyang 116024,China;702 Research Institute of China Shipbuilding Industry Corporation,Wuxi,Jiangsu 214082,China)

机构地区：[1]江苏大学国家水泵及系统工程技术研究中心,江苏镇江212013 [2]大连理工大学船舶工程学院,沈阳大连116024 [3]中国船舶重工集团公司第七○二研究所,江苏无锡214082

出　　处：《排灌机械工程学报》2023年第4期331-337,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家重点研发计划项目(2019YFC0312400)。

摘　　要：采用流固耦合及有限元方法对布放和混输等复杂工况下3级深海采矿混输泵进行强度计算,分析了泵内流场分布、转子部件应力应变及临界转速,并进行了500 m级深海采矿混输系统海上试验.结果表明:设计流量下,混输泵的计算扬程为124.30 m,相对误差为0.27%;布放工况时,混输泵最大变形仅为0.36500 mm,最大应力为73.971 MPa;混输工况时,泵最大变形为0.31500 mm,最大应力为58.860 MPa;转子部件前3阶模态仅沿泵轴方向变形,并未发生扭曲,而后3阶模态呈“S”形扭曲变形;转子部件1阶固有频率对应临界转速为2476 r/min;海试布放过程中混输泵安全可靠,混输工况下泵稳定运行时长超过57 h,实现了2次24 h连续无故障运行,且矿石颗粒体积浓度达到11.7%.Fluid-solid coupling and finite element method were used to calculate the strength of the three-stage deep-sea mining mixed-transport pump under complex working conditions such as deployment and mixed transportation.An offshore test of a 500 m mixed transport system in deep-sea mining was carried out.The results show that the calculated head of the pump is 124.30 m under the design flow rate whereby the relative error is 0.27%.Under the launching condition,the maximum deformation of the pump is only 0.36500 mm and the maximum stress is 73.971 MPa.Under the mixed transport condition,the maximum deformation of the pump is 0.31500 mm and the maximum stress is 58.860 MPa.The first three modes of the rotor component only deform along the direction of the pump shaft without distortion,while the latter three modes are S-shaped distortion.The critical speed corresponding to the first-order natural frequency of the rotor parts is 2476 r/min.During the launching process of the offshore test,the pump is found to be safe and reliable,and mixed-transport time in the pump exceeds 57 hours,which is realized to double during 24 hours continuous trouble-free operations.Meanwhile,volume concentration of the ore particles in the offshore test reaches 11.7%.

关 键 词：混输泵 深海采矿 布放 有限元分析 海上试验 

分 类 号：TH313[机械工程—机械制造及自动化]