The invention relates to a residual-oil discharging technology for ventilation cabinets of fuel systems of aircrafts, particularly to a residual-oil discharging method for a ventilation cabinet of a fuel system of a negative dihedral wing of a large aircraft, and solves the problems that a conventional residual-oil discharging method is low in residual oil discharging efficiency and inconvenient to operate. According to the residual-oil discharging method for the ventilation cabinet, which is disclosed by the invention, when the amount of residual oil in the ventilation cabinet is larger than a preset value, most of fuel is discharged to a main oil tank through an oil discharging system, so that the waste of the fuel is avoided; when the amount of the residual oil in the ventilation cabinet is smaller than the preset value, the residual oil is discharged through a sediment discharging valve; in addition, if the initial amount of the residual oil in the ventilation cabinet is smaller than the preset value, the residual oil is directly discharged through the sediment discharging valve. The residual-oil discharging method combines two oil discharging manners, so that the oil discharging efficiency is improved, and the oil can be thoroughly discharged; the fuel can be prevented from being splashed on the bodies of maintenance personnel on the ground or polluting the surrounding environment; besides, the workload for opening a maintenance mouth cover is omitted.


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    Title :

    Residual-oil discharging method for ventilation cabinet of fuel system of negative dihedral wing of large aircraft


    Contributors:
    LIN HOUYAN (author) / REN HENGYING (author) / LIU BIN (author) / DAI CHENFENG (author)

    Publication date :

    2015-10-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



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