基于Abel-Noble方程的变截面涡旋压缩机径向泄漏机理研究

Study on Radial Leakage Mechanism of Scroll Compressor Based on the Abel-Noble Equation

涡旋压缩机径向泄漏一直是阻碍其发展的技术难题,为了准确计算实际状况的径向泄漏量,根据热力学和流体力学理论,基于Abel-Noble状态方程建立可压缩、考虑壁面摩擦、气体粘性、流动状态等实际因素影响的泄漏量计算模型。采用Fluent软件对轴向间隙的径向泄漏流场进行分析,计算其泄漏量的大小,然后将理论计算结果和仿真计算结果与试验结果进行对比。结果表明:三者结果吻合程度较好,证明了计算模型的正确性,另外通过改变该模型中的几何参数,可以预测和计算任何类型的涡旋压缩机的泄漏。这对研究大功率涡旋压缩机泄漏和应用提供理论参考。

Radial leakage of scroll compressor has always been a technical problem hindering its development.In order to calculate the actual radial leakage accurately,according to the theory of thermodynamics and hydrodynamics,the calculation model is established based on Abel-Noble equation of state,and compressibility,wall friction,gas viscosity,flow state and other practical factors affecting the leakage is considered.The radial leakage flow field of axial clearance is analyzed by Fluent software,and the leakage is calculated.Then,the theoretical calculation results and the simulation results are compared with the experimental results.The results show that the three results are in good agreement with each other,which proves the correctness of the calculation model.In addition,the leakage of any type of scroll compressor can be predicted and calculated by changing the geometric parameters of the model.This provides a theoretical reference for studying the leakage and application of high power scroll compressor.