Inerting system with nitrogen-rich gas storage function

A gas storage and nitrogen-enriched technology, applied in the field of inerting systems, can solve the problems of easy ignition and explosion of fuel tanks, and achieve the effects of reducing consumption, increasing gas storage capacity, and reducing performance requirements

Active Publication Date: 2021-12-03
COMAC +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

If the oxygen concentration in the fuel tank is higher than this range, the fuel tank will easily ignite and explode if there is an ignition source

Method used

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  • Inerting system with nitrogen-rich gas storage function

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Embodiment Construction

[0038] Specific implementations of the present invention will be described below. It should be noted that in the process of specific descriptions of these implementations, for the sake of concise description, it is impossible for this specification to describe all the features of the actual implementations in detail. It should be understood that, in the actual implementation process of any embodiment, just like in the process of any engineering project or design project, in order to achieve the developer's specific goals and to meet system-related or business-related constraints, Often a variety of specific decisions are made, and this can vary from one implementation to another. In addition, it will be appreciated that while such development efforts may be complex and lengthy, the technology disclosed in this disclosure will be Some design, manufacturing or production changes based on the content are just conventional technical means, and should not be interpreted as insuffic...

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Abstract

The invention relates to an inerting system with a nitrogen-rich gas storage function. The inerting system comprises an air separator, a nitrogen-rich gas storage tank, a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, an oxygen concentration sensor, a pressure sensor and an inerting controller. In the climbing and cruising stages of an airplane, when it is measured that the oxygen concentration in a fuel tank is within a safe range, the inerting controller controls the first stop valve and the third stop valve to be opened and controls the second stop valve and the fourth stop valve to be closed, and the air separator supplies nitrogen-rich gas to the gas storage tank; and in the descending stage of the airplane, when it is measured that the oxygen concentration in the fuel tank exceeds the safety range, the inerting controller controls the first stop valve, the second stop valve and the fourth stop valve to be opened and controls the third stop valve to be closed, and the air separator and the air storage tank supply nitrogen-rich gas to the fuel tank at the same time. According to the technical scheme, the system has the following beneficial technical effects that the nitrogen-rich gas can be reasonably and efficiently distributed to the target fuel tank, and the low oxygen concentration state in the fuel tank in the descending stage is kept.

Description

technical field [0001] The invention relates to the field of aviation technology, in particular to an inerting system with the function of storing nitrogen-enriched gas. Background technique [0002] As the storage unit of aircraft fuel, the aircraft fuel tank provides a certain reserve of fuel is one of the necessary conditions to ensure the normal operation of the aircraft engine, so the fuel tank is responsible for extremely important aircraft-level functions. Due to the flammable and explosive characteristics of fuel, the safety design of fuel tanks has always been one of the most important aspects in aircraft design. [0003] The Civil Aircraft Airworthiness Administration believes that if the overall average oxygen concentration in each compartment of the fuel tank does not exceed 12% between sea level and 3048 meters (10000 feet) altitude, 3048 meters (10000 feet) to 12192 meters (40000 feet) ) between altitudes, the concentration value increases linearly from 12% to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D37/32
CPCB64D37/32
Inventor 岳鹏张斌薛勇江华郭军亮黄春光
Owner COMAC
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