System for improving separation efficiency of airborne hollow fiber membrane and working method thereof

A technology of separation efficiency and fiber membrane, which is applied in the field of aviation systems, can solve problems such as system reliability reduction, achieve system reliability guarantee, expand application range, and facilitate implementation

Inactive Publication Date: 2020-05-08
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

Since the membrane inlet pressure depends on the engine operating st

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  • System for improving separation efficiency of airborne hollow fiber membrane and working method thereof
  • System for improving separation efficiency of airborne hollow fiber membrane and working method thereof

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[0022] The present invention will be further described below in conjunction with embodiments. The following description is only a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0023] Such as figure 1 As shown, figure 1 Shown is a system of the present invention for improving the separation efficiency of airborne hollow fiber membranes. The system includes a filter 1, a first compressor 2, a first electric regulating valve 3, a first heat exchanger 4, and a second heat exchange Device 5, water separator 6, filter 7, oil mist separator 8, hollow fiber membrane separator 9, third heat exchanger 10, first temperature sensor 11, second electric regulating valve 12, first flame arrestor 13 , Fuel tank 14, second flame arrestor 15, oxygen concentrati...

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Abstract

The invention discloses a system and method for improving the separation efficiency of an airborne hollow fiber membrane, and belongs to the technical field of aviation systems, and aims to reduce thepressure of an oxygen-enriched gas outlet and increase the internal and external pressure difference of a hollow fiber membrane by taking engine bleed gas as an active flow to eject the oxygen-enriched gas at the waste gas outlet of the hollow fiber membrane, thereby improving the separation efficiency of the airborne hollow fiber membrane. Compared with the prior art, the technical scheme provided by the invention is simple, the problems of low separation efficiency and the like caused by insufficient bleed air pressure of an aircraft engine in the actual application of the hollow fiber membrane inerting technology are solved, the application range of the inerting technology is effectively expanded, other supercharging devices do not need to be additionally arranged, the system reliability is fully guaranteed, and the system is convenient to operate and implement.

Description

technical field [0001] The invention belongs to the technical field of aviation systems, and relates to an aircraft fuel tank inerting system, in particular to a system and a working method for improving the separation efficiency of airborne hollow fiber membranes. Background technique [0002] Fire or explosion in aircraft fuel system is one of the main causes of aircraft crashes. The fire and explosion protection capability of the aircraft fuel system is directly related to the survivability and vulnerability of the aircraft, as well as the utilization rate, cost and personnel safety of the aircraft. A large number of theoretical and experimental research work have been carried out at home and abroad on the fire prevention and explosion suppression technology of fuel tanks, and fruitful results have been obtained. Airborne nitrogen inerting technology using hollow fiber membranes to produce nitrogen-rich gas is the most economical and practical technology for suppressing ...

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Application Information

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IPC IPC(8): B64D37/32B01D53/22
CPCB01D53/228B01D53/229B01D2053/224B01D2256/10B01D2259/4575B64D37/32
Inventor 刘卫华张瑞华冯诗愚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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