液下硫磺泵轴承冷却系统稳态热分析

Steady-state Thermal Analysis of Bearing Cooling System of Submerged Sulfur Pump

为控制液下硫磺泵轴承润滑冷却系统的温升,对泵轴承的发热量进行研究。利用CFD软件对100HLD2-44型液下硫磺泵上轴承润滑冷却系统进行流-热耦合计算。计算结果表明,冷却水最佳进口流速为0.5 m/s时100HLD2-44型液下硫磺泵轴承外圈温度得到了很好的控制;轴承内圈温度高于外圈的温度,与冷却水流入端接触的轴承部分温度高于出口端温度;轴承各部分的温度均随熔融介质温度升高而升高,尤其是下轴承内圈温度增高最明显。

The temperature rise of the bearing lubrication cooling system seriously affected the stability and reliability of the pump unit. To control the temperature rise of the lubrication cooling system of submerged sulfur pump bearing, bearing calorific value was researched. Based on the flow-thermal coupling method, bearing lubrication cooling system of 100HLD2- 44 submerged sulfur pump was calculated by CFD software. The calculation results show that the temperature of bearing outer ring of 100HLD2-44 submerged sulfur pump can be controlled very well, when the velocity of cooling water is 0. 5 m/s ; the inner temperature is higher than the outer ring＇s, the temperature on the contacting end of cooling water inlet is higher than that in the outlet ; the bearing temperature is increased with the increasing of the temperature of molten salt medium, especially lower bearing inner ring temperature is increased obvious.