涡轴发动机测扭装置发展现状及趋势  

Current situation and development trend of torque measuring device for turboshaft engine

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作  者:李立新 廖明夫[1] 余索远 刘森 周春丽 LI Lixin;LIAO Mingfu;YU Suoyuan;LIU Sen;ZHOU Chunli(School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China;Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China)

机构地区:[1]西北工业大学动力与能源学院,西安710072 [2]中国航发湖南动力机械研究所,湖南株洲412002

出  处:《航空动力学报》2024年第12期144-152,共9页Journal of Aerospace Power

基  金:国家科技重大专项(2017-Ⅳ-0001-0038)。

摘  要:为进一步研究涡轴发动机测扭装置,研究了常见测扭装置的分类、优缺点及其在涡轴发动机中的适用性。阐述了常用的涡轴发动机扭矩测量装置的基本原理、发展现状及典型应用案例,并指出了目前存在的主要问题,进一步分析了制约紧凑型动力涡轮转角法测扭的核心技术难点。探讨了采用温度补偿、扭转角度转换成轴向位移,以及将动力涡轮短粗轴由圆柱/圆环截面改进成星形截面等结构在提高测扭精度的可行性。研究发现:星形截面轴可保证足够抗弯刚度的前提下显著降低扭转刚度,可解决紧凑型大功率涡轴发动机测扭装置精度不高的问题,应着力研究星形截面轴弯曲、扭转振动特性和开展装机适应性验证。To further study the torque measuring device of turboshaft engine,the classification,pros and cons of common torque measuring devices and their applicability in turboshaft engine were studied.The basic principle,state-of-the-art,typical application cases and main problems of torque measuring devices commonly used in turboshaft engines were elaborated,and then the core technologies of torque measurement for compact power turbine angle method were analyzed.The feasibility of improving the accuracy of torque measurement methods involving both the structures of changing temperature compensation and torsion angle into axial displacements and the new star-type section structures of the short and thick shaft of power turbine improved from the cylinder/ring section was discussed.From this investigation,it was demonstrated that the star-type section shafts could guarantee to obviously reduce the torsional stiffness under the premise of enough flexural rigidity,so that the precision of torque measuring device of compact high-power turboshaft engine can be improved.The efforts of this study provide the research directions of torque measuring devices for turboshaft engine involving the bend and torsional vibration characteristics of star-type section shafts and the validation of installation adaptability.

关 键 词:涡轴发动机 星形结构 转角法测扭 温度补偿 角度转成位移 

分 类 号:V232.2[航空宇航科学与技术—航空宇航推进理论与工程]

 

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