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.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |