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Civil Aviation Aircraft Fuel Leakage Detection System and Its Detection Method

A technology of leak detection and fuel system, which is applied in the testing of machines/structural components, measuring devices, testing of fluid tightness, etc., and can solve problems such as time-consuming, requiring personnel to enter the fuel tank, and leakage

Active Publication Date: 2021-09-10
四川泛华航空仪表电器有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantage of this method is that it requires personnel to enter the tank and is time consuming
Also requires specialized equipment and qualified personnel for leak testing

Method used

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  • Civil Aviation Aircraft Fuel Leakage Detection System and Its Detection Method

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0031] The on-board fuel system remote interface unit 400 in the present invention adopts the on-board fuel system remote interface unit 400 disclosed in the patent CN 105329450 A. Aircraft fuel tank comprises wing outer fuel tank 200, wing inner fuel tank 300 and ventilation fuel tank 100; Nitrogen generator 1 is the air separation device that is communicated with air, the nitrogen in the air is separated, and fills into each fuel tank of aircraft through vent pipe.

[0032] Such as figure 1 As shown, the civil aviation airliner fuel leakage detection system includes nitrogen generator 1, ventilation pipe, main electric valve 3, slave electric valve 6, position sensor 7, full fuel signal device 5, check valve 8, pressure sensor 4, safety valve 10. Manual valve 9.

[0033]Among them, the master electric v...

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Abstract

The invention discloses a civil aviation passenger aircraft fuel oil leakage detection system, which relates to the technical field of aircraft fuel detection, and includes a nitrogen generator, a ventilation pipe, a master electric valve, a slave electric valve, a position sensor, a full fuel signal, a one-way valve, and a pressure sensor , safety valve, manual valve. The invention also discloses a fuel leakage detection method of a civil aviation passenger plane. The invention also discloses a detection method. When the remote interface unit of the airborne fuel system detects that the wheel-mounted signal is valid, all fuel valves are closed, the fuel booster pump is not working, the fuel tank is not in the state of maximum full fuel, the engine is not working, the APU is not working, When the secondary electric valve in the ventilated oil tank is closed, inflate nitrogen into the outer wing oil tank and the inner wing oil tank to pressurize the outer wing oil tank and the inner wing oil tank, measure the timing change rate of the pressure, and obtain the outer wing oil tank and the airfoil inner oil tank. Fuel leaks from the inboard tanks. The invention does not need to empty the fuel tank, and reduces the manpower required for the detection of fuel tank leakage.

Description

technical field [0001] The invention relates to the technical field of aircraft fuel oil detection, in particular to a fuel oil leakage detection system and a detection method of a civil aviation airliner. Background technique [0002] There are many reasons for fuel tank leakage of civil aviation aircraft, such as excessive fuel tank structural deformation, cracking of sealant, aging of sealant, accidental damage, incorrect riveting of rivets and so on. Fuel leaking from a fuel tank can be ignited by different ignition sources with disastrous consequences for the flight, so it is important to detect any form of fuel leak before the aircraft takes off. [0003] Among the aviation accidents that have been recorded, several accidents were caused by fuel leakage in the fuel tank, and even the latest aircraft Boeing 787 had a fuel leakage accident. Fuel leakage accidents not only caused an emergency landing of the aircraft, but also caused fires and catastrophic consequences wh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/32
CPCG01M3/3236
Inventor 薛双喜邱遥远牛满江
Owner 四川泛华航空仪表电器有限公司
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