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Catalytic combustion and inerting aircraft fuel tank system with gas supplement, and control method

A technology for fuel tanks and aircraft, applied in the direction of fuel tank safety measures, etc., can solve the problems of environmental pollution, low efficiency of hollow fiber membrane nitrogen production, high price, etc., achieve simple process, high inertization efficiency, and shorten the time required for inertization Effect

Pending Publication Date: 2018-03-30
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the disadvantages of low nitrogen production efficiency, high price and environmental pollution of hollow fiber membranes existing in the prior art, and provides a catalytic combustion inerting aircraft fuel tank system with supplementary air, which converts fuel vapor and fuel vapor in the gas phase space above the fuel tank The air mixture undergoes flameless catalytic combustion in the catalytic oxidation reactor to produce carbon dioxide. The nitrogen that does not participate in the reaction and the carbon dioxide produced by the reaction are used as a mixed inert gas to inert the fuel tank, achieving the purpose of fire and explosion protection, and solving the above technical problems

Method used

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  • Catalytic combustion and inerting aircraft fuel tank system with gas supplement, and control method
  • Catalytic combustion and inerting aircraft fuel tank system with gas supplement, and control method
  • Catalytic combustion and inerting aircraft fuel tank system with gas supplement, and control method

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Embodiment 2

[0058] This embodiment adopts injector washing and inerting, and this system is applied to fuel washing of aircraft fuel tanks or ground fuel tanks, such as figure 2 As shown, the fuel tank 1 is an oil storage tank container, and the lower part of the fuel tank 1 is provided with a washing injector 33, and an oil pump 32 is connected through a pipeline between the fuel outlet at the bottom of the fuel tank 1 and the fuel liquid inlet of the washing injector 33, and the washing injector 33 is in the Below the lowest liquid level at the bottom of fuel tank 1.

[0059] The working process is as follows:

[0060] The inert gas mixture with low water content exiting from the gas outlet of the water separator 25 is sent into the scrubber injector 33, and after being mixed with the fuel from the bottom of the fuel tank 1, flows from the outlet of the scrubber injector 33 In the fuel in the fuel tank 1, the oxygen content in the fuel is reduced, and the mixed gas is below the explos...

Embodiment 3

[0062]In this embodiment, the dispenser is used to wash the inerted fuel tank, and the system is applied to fuel washing of aircraft fuel tanks or ground fuel tanks, such as image 3 As shown, a gas distributor 34 is placed inside the oil in the oil tank 1 , and the outlet of the gas distributor 34 is below the lowest liquid level at the bottom of the oil tank 1 .

[0063] The working process is as follows:

[0064] The low water content inert mixed gas leaving the gas outlet of the water separator 25 is sent into the gas distributor 34, and the gas distributor 34 is arranged in the oil in the oil tank 1, and the low water content inert mixed gas is distributed from the gas The outlet of the device 34 flows into the fuel oil in the fuel tank 1, the oxygen content in the fuel oil is reduced, and the mixed gas is below the explosion limit, so as to achieve the purpose of inertization.

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Abstract

The invention discloses a catalytic combustion and inerting aircraft fuel tank system with gas supplement, and belongs to the technical fields of fire prevention and explosion prevention. The invention further discloses a control method of the catalytic combustion and inerting aircraft fuel tank system. The catalytic combustion and inerting aircraft fuel tank system adopts the specific principle that gas-phase space fuel vapor at the upper part of an oil tank and an air mixture perform flameless catalytic combustion in a catalytic oxidation reactor to generate carbon dioxide; and nitrogen which does not participate in the reaction, and the carbon dioxide generated during the reaction perform inerting on the oil tank as mixed inert gas to realize the purposes of fire prevention and explosion prevention. According to the system, engine gas introduction is designed and utilized to facilitate the reaction; a large-flow reaction mode and a small-flow reaction mode are provided, and inertingtime is greatly shortened through switching between the large-flow reaction mode and the small-flow reaction mode; and the system has the advantages of being simple in process, high in inerting efficiency, free from pollution and the like.

Description

technical field [0001] The invention belongs to the technical field of fire prevention and explosion protection, and relates to an aircraft fuel tank fuel inerting system and method, in particular to a catalytic combustion inerting aircraft fuel tank system with supplementary air and a control method. Background technique [0002] The safety of modern aircraft has been widely concerned by the society, and fuel system combustion and explosion are one of the main causes of aircraft crashes. Statistics show that during the Vietnam War, the U.S. Air Force lost thousands of aircraft due to ground fire attacks, of which the proportion of aircraft crashes and deaths due to the fire and explosion of aircraft fuel tanks was as high as 50%. During the climb, flammable vapors from the center wing fuel tank ignited causing an explosion, killing all crew members. [0003] It can be seen that, no matter for military aircraft or civil aircraft, effective measures must be taken to prevent ...

Claims

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Application Information

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IPC IPC(8): B64D37/32
CPCB64D37/32Y02T50/40
Inventor 彭孝天冯诗愚李超越努尔麦麦提江·木合太尔刘卫华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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