摘要
单螺杆压缩机与其它回转式压缩机一样 ,为了解决气体从压缩腔中向外泄漏等问题 ,需要向压缩腔中喷入润滑油或其它液体 .一方面 ,喷入的润滑油减少了气体的泄漏量 ,降低了排气温度 ;另一方面 ,润滑油的存在增加了粘性剪切、摩擦、搅拌和吸气预热等方面的损失 ,直接影响压缩机的性能 .本文根据喷油雾化理论 ,引入维勃数来评价润滑油在压缩腔中的雾化程度 ,为合理选取单螺杆压缩机的喷油参数提供了依据 .实验中通过改变喷油量、喷油温度和喷油孔径等参数 ,得到不同喷油参数下单螺杆压缩机的容积效率和绝热效率 ,结合喷油雾化理论 ,对所得到的实验数据进行了仔细的分析 .实验证明 ,依据维勃数来选取喷油参数是可取的 .为了保证润滑油在压缩腔中雾化良好 ,所研究的单螺杆压缩机喷油的维勃数应不小于 60 .
In order to decrease air leakage, oil or other liquids must also be injected into compression cavity of a single screw compressor as other rotary compressors must. The injected oil can decrease the leakage and the discharge temperature of air. But it increases the losses in such as viscosity shearing, friction, stirring and intake preheating, and influences the performance of the compressor directly. Based on oil atomizing theory, the parameter of Weber mumber is put forward for evaluating the atomizing level of the oil in compression cavity. The volumetric and adiabatic efficiencies of a single screw compressor are obtained at different oil injection volumes, temperatures and injecting hole diameters. The analysis of the experimental results shows that it is possible to select oil injection parameters according to Weber number, and the Weber number of the compressor used in the experiment should be greater than 60.
出处
《西安石油学院学报（自然科学版）》
CAS
2000年第2期41-44,共4页
Journal of Xi'an Petroleum Institute（Natural Science Edition)
关键词
螺杆式压缩机
效率
喷油参数
喷油雾化
评价
screw compressor, efficiency, oil injection parameter, oil atomizing, evaluation
