超声波流量计在飞机燃油流量测试中的应用研究

燃油系统输油流量测试是飞机燃油系统地面模拟试验的一项重要内容;由于试验油箱内部的各管路与真实飞机油箱管路的布置是一致的,不适合在油箱内的狭小空间安装涡轮流量计,并且会破坏管路流阻特性;由于使用传统油箱油量标定的方法进行输油流量测量耗时耗力,所以需要采用一种新的技术或测量方法来完成油箱输油流量的测量;超声波流量计体积小,不会破坏输油管路流阻特性,防爆等级也符合试验要求;对超声波流量计在浸油状态下测试进行可行性分析,将超声波流量计在飞机燃油系统试验中实现创新性应用;通过试验证明了超声波流量计在飞机燃油流量测试中发挥了重要作用,并且首次将超声波流量计应用到飞机试验油箱内部输油管路的流量测试中,这对飞机其他系统的流量测试和飞机机上排故试验起到了重要作用。

Application Research of Ultrasonic Flowmeter in Aircraft Fuel Oil Flow Test

The system of fuel oil flow test is one of the significant ground simulation experiments. The tubes layout in the test reservoir are consistent with that in the real aircraft reservoir, so they are not suitable to be installed in the narrow space of the reservoir. And it will damage the flow resistance characteristic of the tube to install the turbine flowmeter. As the way of traditional reservoir oil calibration wastes work and time, it is necessary to apply a novel technology to fulfill the oil calibration. Because the volume of ultrasonic flowmeter is smaller so it will not ruin the flow resistance characteristic of oil transportation tube which can meet the experiment demand. This paper deals with the possibility analysis of the ultrasonic flowmeter under the circumstances of immersion oil, the creation of ultrasonic flowmeter will be fulfilled in the fuel oil system experiments. The importance of ultrasonic flowmeter in the test of airplane fuel oil will be verified by the experiments. It is significant to make a fuel oil flow test utilizing the ultrasonic flowmeter in the fuel oil system series experiments for the first time. As a result, it is proved that ultrasonic flowmeter plays an important role in the aircraft fuel oil flow test and troubleshooting.