关键词: 多相混输泵, 超高压, 机械密封, 浅槽微接触, 温度场, 变形计算, 表面涂层, 摩擦扭矩

Abstract:

Aiming at the problem of easy wear and failure of mechanical seals in ultrahigh pressure mixed transport pumps,two strategies of end face groove processing and coating application were introduced.Through the heat-fluid-solid coupling analysis method,the temperature distribution and end face deformation of shallow groove micro contact mechanical seals in practical applications were analyzed.The application of surface coating technology was explained,and a series of experimental studies on mechanical seal performance were conducted.These studies revealed the significant effects of end face groove and coating technology in reducing friction and improving wear resistance.The results not only confirm the effectiveness of these technologies in improving the life and reliability of mechanical seals,but also provide an important theoretical basis and practical guidance for the design and optimization of the mechanical sealing system of ultrahigh pressure mixing pumps.

Key words: multiphase mixed transport pump, ultra high pressure, mechanical seal, shallow groove micro contact, temperature field, deformation calculation, surface coating, friction torque