【摘要】 对压缩机转速、排气压力和喷油量等参数对喷油单螺杆压缩机热力性能的定量影响进行了试验研究。通过试验得出了容积效率、绝热效率和比功率等随转速、排气压力、油气体积比变化的一般规律。研究结果表明,转速对压缩机性能影响不明显,从1500r/min变化到3000r/min的范围内,绝热效率变化不到5%;油气体积比为1%左右时性能较好,试验用压缩机喷油量设计偏小;低速高压时压缩机性能较差,喷油量很少时性能恶化;试验用单螺杆压缩机喷油管路和喷油孔口大小设计不合理,设计工况下油气比并未达到最佳值,需要进一步改进。更多还原

【Abstract】 The test rig of an oil-injected single screw compressor was built in order to investigate the key influencing factors such as the rotating speed,discharge pressure and oil flowrate.The general results of the change of volume efficiency,adiabatic efficiency and specific power were obtained through the experimental investigation.It was shown that great change in rotating speed has little influence on the performance,the adiabatic efficiency changed less than 5% when the rotating speed changed from 1500r/min to 3000r/min.The performance was relatively good when the volume ratio of oil to gas was about 1%.It gave a poor performance when the speed was lower and the discharge pressure was higher,and the performance was even worse if the oil flowrate was very little.The single screw compressor for the experiment was designed unreasonably on the size of its oil injection pipe and hole,and the oil-gas ratio had not reached the best value,so it was needed further improvement.更多还原