气路碎屑监测静电传感器设计及模拟实验  

Electrostatic Sensor Design for Debris Monitoring in Gas Path and Simulation Test

作　　者：曾苏凡 蒋世奇[2] 袁世辉[3,4] 曲建凤 

机构地区：[1]成都信息工程学院电子工程学院,四川成都610225 [2]成都信息工程学院控制工程学院,四川成都610225 [3]西北工业大学能源与动力学院,陕西西安710072 [4]中国燃气涡轮研究院,四川江油621703

出　　处：《燃气涡轮试验与研究》2014年第5期58-62,共5页Gas Turbine Experiment and Research

基　　金：航空科学基金(20101024005);成都信息工程学院科研基金(KYTZ201106)

摘　　要：基于静电感应原理,结合航空发动机尾喷管结构和模拟实验环境要求,设计了一种用于气路荷电碎屑监测的静电传感器。通过荷电碎屑模拟实验,证明了该静电传感器监测荷电碎屑的有效性,并分析了碎屑荷电量、碎屑与探极表面相对位置对传感器输出的影响。结果表明:碎屑荷电量越多,传感器输出电压幅值越大;同一轴向位置,随着碎屑与探极表面径向距离的增大,传感器输出电压幅值迅速减小;碎屑与探极表面径向距离一定时,碎屑与探极末端轴向距离越大,传感器输出电压幅值越小。此外,还进一步分析了实验过程中一些难以避免的影响测量结果的因素。Based on the principle of electrostatic induction, combining the structure of aero-engine nozzleand the requirements of simulation environment, an electrostatic sensor for charged particles monitoring ingas path was designed. The validity of the electrostatic sensor in charged particles monitoring was proved bycharged particles simulation experiments. The effects of the particles charge, and the distance between theparticles position and the electrode surface on the output of the sensor were also analyzed. The experimentalresults show that the more the charge of particles is, the bigger the output voltage amplitude of sensor is; thesensor output voltage amplitude decreases rapidly as the radial distance of debris and the surface of theelectrode increases in the same axial location; the sensor output voltage amplitude gets smaller as the dis-tance between the debris and the electrode surface in the axial gets larger in case the radial distance be-tween the debris and the electrode surface is fixed. Some inevitable factors which affect the measuring re-sults in the experiments were further analyzed.

关 键 词：航空发动机 气路故障 荷电碎屑监测 静电传感器 模拟实验 探极表面 

分 类 号：V263.6[航空宇航科学与技术—航空宇航制造工程]