摘要
转子叶片的叶尖问隙对航空发动机的工作效率、安全性和可靠性等都具有重要影响,过大和过小的间隙值都会影响发动机的运行状态,因而叶尖间隙成为了发动机测试过程中的重要参数。为了推动我国发动机测试技术的发展,本文在对国内外叶尖间隙测量技术进行广泛调研的基础上,从叶尖间隙对发动机性能的影响入手,分析了导致叶尖间隙变化的因素,并对目前叶尖间隙的测量方法和手段,如放电探针测量法、电涡流测量法、微波测量法、电容测量法、光纤测量法以及光谱共焦测量法等进行了简要介绍,总结了国内外在该领域的研究成果和发展现状,并总结了叶尖间隙测量传感器的关键技术,为后续研究提供了参考。
In the aero engine,the tip clearance has great influence on the work efficiency,safety and reliability of the engine.Tip clearance of too large or too small size may affect the running state of the engine,which makes itself one of the most important parameters in the engine testing.In order to push the development of domestic engine testing technology,wide investigation of the measuring technology of tip clearance at home and abroad is carried out in the paper.Based on the analysis of the influence of tip clearance on the engine performance,the factors leading to the variation of tip clearance are discussed.And then,current tip clearance measuring method and means such as discharge probe method,eddy current method,microwave method,capacitance method,optical fiber mediod and chromatic confocal measuring method etc are introduced briefly.Finally,the research results and development status in this field at home and abroad are summarized,as well as the key technologies in the study and the research result of the sensor for tip clearance measurement,which provides reference for the subsequent study.
引文
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