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主要介绍了电容式叶尖间隙测量系统的各组成部分,间隙测量设备在离心压气机试验件上的安装方式和标定方法。通过对离心压气机试验件的叶尖间隙进行实时监测,获得了离心叶轮进口、中间和出口截面叶尖间隙随转速增加而减小的关系,保证了试验的安全性和试验件的完整性。分析叶尖间隙和转速关系可以为后续减小叶尖的冷态间隙和优化离心叶轮叶尖流道和叶轮外罩流道提供试验数据支持,叶尖间隙测量技术在离心压气机试验件上的应用为确定最佳的叶轮间隙及以后的型号研制提供了重要的数据支持。
This paper mainly introduces the components of the capacitive tip clearance measuring system, the installation method and calibration method of the gap measuring equipment on the centrifugal compressor test piece. Through the real-time monitoring of the tip clearance of the centrifugal compressor test pieces, the inlet of the centrifugal impeller is obtained, and the tip clearance of the middle and the exit cross section decreases with the increase of the rotation speed to ensure the safety of the test and the integrity of the test piece. Analysis of the relationship between tip clearance and rotation speed can provide experimental data support for the subsequent reduction of cold tip clearance and optimization of centrifugal impeller tip flow path and impeller shroud flow path. The application of tip clearance measurement technology to centrifugal compressor test pieces In order to determine the best impeller clearance and the subsequent model development provides important data support.