摘要
泵轴断裂、泵体腐蚀导致潜水电泵损毁率高。通过理论计算和ANSYS数值模拟,对六棱轴和圆柱轴结构的强度、刚度等力学特性进行了对比,并开展了304、316L、904不锈钢材料的耐腐蚀现场对比试验。结果表明:在同等载荷和等效直径条件下,圆柱轴的圆截面所受剪切应力为六棱轴的64.95%,且扭转角度仅为六棱轴的56.25%;模拟结果显示圆柱轴联轴器最大环向形变为六棱柱轴最大环向形变的68.4%,圆柱轴结构的抗扭性能更优;904不锈钢抗腐蚀性能最佳,但304和316L不锈钢对酸性介质具有类似抗腐蚀性能。综合考虑耐腐蚀余量和制造成本,建议在地浸采铀专用潜水电泵研发过程中选用圆柱泵轴结构,沿用现有316L不锈钢作为主材的选材方案。
The high rates of submersible pump damage due to pump shaft fracture and pump body corrosion have been studied.By conducting theoretical calculations and ANSYS numerical simulations,the mechanical properties such as strength and stiffness of hexagonal and cylindrical shaft structures were compared.Field comparison tests on the corrosion resistance of 304,316L,and 904 stainless steel materials were also carried out.The results indicate that under the same load and equivalent diameter conditions,the shear stress on the cross-section of the cylindrical axis is 64.95%of the hexagonal axis,and the torsion angle is only 56.25%of the hexagonal axis torsion angle;the simulation results show that the maximum circumferential deformation of the cylindrical shaft coupling is 68.4%of the maximum circumferential deformation of the hexagonal prism shaft,the cylindrical shaft structure exhibits better torsional performance.While 904 stainless steel has the best corrosion resistance,both 304 and 316L stainless steels demonstrate similar corrosion resistance to acidic media.Considering corrosion resistance margins and manufacturing costs,it is recommended to use a cylindrical pump shaft structure and continue using 316L stainless steel as the main material in the development of submersible pumps for uranium mining.
作者
张翀
贾皓
王亚安
杜志明
许影
李学忠
余卓华
ZHANG Chong;JIA Hao;WANG Ya’an;Du Zhiming;XU Ying;LI Xuezhong;YU Zhuohua(Beijing Research Institute of Chemical Engineering and Metallurgy,CNNC,Beijing 101149,China;China Nuclear Mining Science and Technology Corporation,CNNC,Beijing 101149,China;Nanfang Pump Industry Co.,Ltd.,Hangzhou 311100,China)
出处
《铀矿冶》
CAS
2024年第2期58-65,共8页
Uranium Mining and Metallurgy
基金
中核集团集中研发-全产业链“卡脖子”攻关科研项目(〔2022〕331)
中核集团青年英才项目-菁英项目(〔2022〕291)
中核铀业铀矿冶自主科研项目(〔2021〕252)。
关键词
地浸采铀
潜水电泵
泵轴结构
不锈钢
抗腐蚀
in-situ leaching of uranium
submersible pump
shaft structure
stainless steel
corrosion resistant
