Abstract：On the basis of considering the relationship between the saturated vapor pressure and temperature of water, the viscous temperature effect and the internal friction effect of Newtonian flui. A calculation model of gas-liquid-solid multiphase flow in micro-gap of upstream pumped mechanical seals involving lubrication film temperature was established. The effects law of medium temperature on the movement, deposition distribution, deposition rate and sealing performance of solid particles in the sealing lubrication film was studied by using Mixture model and DPM model in Fluent. The results show that when the temperature of the medium increases, the pressure in the high-pressure zone of the outer groove root decreases, and the number of inhaled particles increases.The particles entering the groove area are easier to move outwards to the groove root and dam area. Most of the particles entering the membrane area escape from the outer diameter side under the action of larger centrifugal force and pressure gradient force, and the particle deposition area shrinks to the outer groove root, and the deposition rate decreases. When the rotation speed is low, the particles tend to deposit in the groove area near the outer root and the lower the medium temperature. Tthe more the deposition area extends to the inner groove root and when the rotating speed is high, which is easy to deposit in the outer groove root and dam area. The opening force and friction torque of the lubrication film decrease with the increase of the medium temperature. The friction torque increases with the increase of the rotating speed and is more sensitive to the medium temperature, and the leakage amount moves to the direction of positive leakage with the increase of the medium temperature.
陈汇龙,侯婉*,桂铠,周涛,韩婷,陆俊成,赵斌娟. 介质温度对密封润滑膜颗粒沉积特性及性能影响[J]. 排灌机械工程学报, 2021, 39(11): 1105-1110.
CHEN Huilong,HOU Wan*,GUI Kai,ZHOU Tao,HAN Ting,LU Juncheng,ZHAO Binjuan. Effect of medium temperature on particle deposition characteristics and performance of sealing lubrication film. Journal of Drainage and Irrigation Machinery Engin, 2021, 39(11): 1105-1110.
