The invention discloses an aircraft fuel tank inerting system which comprises a fuel tank, a liquid outlet of the fuel tank is connected with a second control valve through a pipeline, a downstream pipeline of the second control valve is sequentially connected with a fuel pump, a fifth temperature sensor, a third flow sensor and an electronic equipment cabin, and finally, the downstream pipeline of the second control valve is connected to a liquid inlet of the fuel tank through a pipeline. The fuel oil serves as a cold source, the temperature of the fuel oil rises while airborne equipment is cooled, and the vapor pressure of the fuel oil increases along with the rising of the temperature such that the vapor concentration of the fuel oil in the gas-phase space of the fuel tank is increased,and a non-combustible state is achieved. Meanwhile, fuel oil heating is combined with an aircraft-borne nitrogen-making inerting technology for preparing nitrogen-rich gas by using a hollow fiber membrane such that the inerting effect of the fuel tank is further ensured.
本发明公开了一种飞机燃油箱惰化系统,包括油箱,所述油箱的液体出口通过管道连接有第二控制阀,所述第二控制阀下游管道依次连接有燃油泵、第五温度传感器、第三流量传感器、电子设备舱,最后通过管道连接到所述油箱的液体入口。本发明将燃油作为冷源,给机载设备降温冷却的同时,燃油温度升高,燃油蒸汽压随温度的升高而变大,从而使油箱气相空间燃油蒸汽浓度增加,达到不可燃状态。同时,将燃油加热与中空纤维膜制取富氮气体的机载制氮惰化技术结合在一起,进一步保证了油箱的惰化效果。
Aircraft fuel tank inerting system and inerting method
一种飞机燃油箱惰化系统及惰化方法
2020-11-27
Patent
Electronic Resource
Chinese