The invention discloses an aircraft fuel tank inerting system and a working method thereof, and belongs to the technical field of fire prevention and explosion prevention. Air is entrained from an aircraft engine, is dried and filtered, and then enters a hollow fiber membrane air separation device in order to prepare high-concentration nitrogen-rich gas, and the nitrogen-rich gas is introduced into a fuel tank to reduce the oxygen concentration of the fuel tank, so that the fuel tank is prevented from being ignited and exploded to achieve the purpose of inerting the fuel tank. The system can realize fuel washing, deoxidizing and inerting of the fuel tank in an airplane climbing stage, flushing, deoxidizing and inerting are conducted on the fuel tank gas phase space in the airplane cruisingand descending stages, an oxygen concentration sensor is used for monitoring the oxygen concentration of the fuel tank gas phase space in real time and transmitting signals to a control system, and the control system is used for adjusting the engine air entraining amount according to the oxygen concentration, so that the influence of engine air entraining on the performance is reduced.

    本发明公开了一种飞机燃油箱惰化系统及其工作方法,属于防火防爆技术领域。本发明从飞机发动机引气并经过干燥过滤后进入中空纤维膜空气分离装置制取高浓度富氮气体,将富氮气体通入油箱用来降低油箱氧气浓度,从而防止油箱起火爆炸达到油箱惰化的目的;本发明的系统可实现在飞机爬升阶段进行油箱燃油洗涤除氧惰化,在飞机巡航和下降阶段进行油箱气相空间冲洗除氧惰化,并通过氧浓度传感器实时监测油箱气相空间氧气浓度并将信号传输至控制系统,利用控制系统根据氧气浓度大小调整发动机引气量从而减小发动机引气对其性能的影响。


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    Title :

    Aircraft fuel tank inerting system and working method thereof


    Additional title:

    一种飞机燃油箱惰化系统及其工作方法


    Contributors:
    LIU WEIHUA (author) / FENG SHIYU (author) / LI CHAOYUE (author)

    Publication date :

    2020-04-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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