双螺杆压缩机转子啮合线对其性能参数的影响

Study on the influence of meshing line of rotors on its performance of twin screw compressor

根据双螺杆压缩机转子型线的啮合线上关键点的分布,将螺杆转子型线的啮合线分为5段。并详细讨论了每一段变化对转子型线性能参数的影响。最终得出:啮合线围成的面积越大,则面积利用系数越大,即阴阳转子齿间面积之和越大;对泄漏三角形面积产生影响的只有啮合线密封侧的3段;接触线长度的变化是比较复杂的,其与转子型线的线型有很大的关系。

According to the distribution of the key points on the meshing line of the rotor profile of the twin screw compressor,the meshing line of the screw rotor profile was divided into five segments.The influence of the change of each segment on the performance parameters of the rotor profile was then discussed in detail.The resulted showed that the area utilization coefficient changes were associated with the area enclosed by the meshing line,which meant the sum of the area between the teeth of male rotor and female rotor changed to be larger.Only three segments of the sealing side of the meshing line had an effect on the area of the leakage triangle,and the changes of contact line length were complicated and closely related to the rotor profile.