基于静压气悬浮变频离心冷水机组的系统研究

静压气悬浮轴的悬浮技术,是利用多孔质材料做成的轴承,对高压气体节流降压,在轴承和轴之间形成一层薄的气膜,使轴悬浮,实现轴的无接触式工作,从而达到降低摩擦提高工作效率的目的 .本论文基于的50冷吨的气悬浮离心制冷机组,名义工况的制冷量为170 kW,制冷能效5.6,IPLV值7.3,通过对该系统及测试数据进行分析,用理论...

System research based on centrifugal refrigeration unit with aerostatic suspension bearings

Static pressure gas suspension frequency conversion centrifugal compressor, shaft suspension technology, is the use of porous materials made of bearings, high pressure gas throttling pressure reduction, A thin gas film is formed between the bearing and the shaft to suspend the shaft and realize the non-contact work of the shaft, so as to reduce the friction and improve the work efficiency. This paper is based on the 50 rt air suspension centrifugal refrigeration unit, the nominal cooling capacity is 170 kW, the refrigeration efficiency is 5.6, and the IPLV value is 7.3, through the analysis of the refrigeration system and data, the difference between the theoretical calculation of heating and the measured heating is obtained, and the flow rate of the air supply of the suspension shaft is about 6 g/s～9 g/s, accounting for 0.82%～2.2% of the system circulation.