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

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

Examples

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Example Embodiment

[0057] Example 2

[0058] In this embodiment, ejector washing inerting is adopted, and the system is used for 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. A washing injector 33 is placed in the lower part of the fuel tank 1. An oil pump 32 is connected through a pipeline from the fuel outlet at the bottom of the fuel tank 1 to the fuel liquid inlet of the washing injector 33. The bottom of tank 1 is below the lowest liquid level.

[0059] The working process is as follows:

[0060] The low-water content inerted mixture leaving the gas outlet of the water separator 25 is sent to the washing injector 33, mixed with the fuel from the bottom of the fuel tank 1, and then flows into the washing injector 33 outlet In the fuel in the fuel tank 1, the oxygen content in the fuel is reduced, and the mixed gas is below the explosion limit, achieving the purpose of inerting.

Example Embodiment

[0061] Example 3

[0062] In this embodiment, a dispenser is used to wash the inerted fuel tank. This system is used to wash the fuel tanks of aircraft 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 inerted mixed gas leaving the gas outlet of the water separator 25 is sent to the gas distributor 34, which is arranged in the oil in the tank 1, and the low-water content inerted mixed gas is distributed from the gas The outlet of the device 34 flows into the fuel in the fuel tank 1, the oxygen content in the fuel is reduced, and the mixed gas is below the explosion limit, achieving the purpose of inerting.

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Abstract

The invention discloses a catalytic combustion inerting aircraft fuel tank system with supplementary air, which belongs to the technical field of fire prevention and explosion protection. The invention also discloses its control method. Flameless catalytic combustion is carried out in the reactor to generate carbon dioxide. Nitrogen that does not participate in the reaction and carbon dioxide generated by the reaction are used as a mixed inert gas to inert the fuel tank to achieve the purpose of fire and explosion protection. The system is also designed to use engine bleed air to promote the reaction. It provides two reaction modes of high flow rate and low flow rate. By switching between large flow rate and low flow rate inerting mode, the time required for inerting is greatly shortened. It has the advantages of simple process, high inerting efficiency and no pollution.

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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