双螺杆压缩机齿间间隙分布的计算

Calculation to Inter-Lobe Clearance Distribution of Twin-Screw Compressor

基于双螺杆压缩机齿间间隙的生成原理,提出将阴、阳转子齿面沿接触线的法向间隙作为阴、阳转子的齿间间隙,将螺杆压缩机齿间间隙分布的计算转化为沿接触线的间隙分布的计算,即转化为沿接触线的间隙带的计算.计算结果表明,螺杆压缩机齿间间隙分布存在跃升现象.该方法可以获得完整的齿间间隙分布规律,可以量化不同的齿间间隙获得方法对齿间间隙分布的影响,计算精度能够满足工程设计的需要.

Based on producing principle of the inter-lobe clearance of twin-screw compressor, a mathematical algorithm is presented, where the normal distance between the two screw rotor surfaces along the contact line is considered as the inter-lobe clearance. Therefore the calculation of inter-lobe clearance is transformed to the calculation of clearance distribution along the contact line. The results show that clearance jump exists along the contact line, and the total inter-lobe clearance distribution can be obtained with higher accuracy via the proposed algorithm.