Experiment table based on controllable catalytic combustion for reducing fuel tank combustibility

A catalytic combustion, test-bed technology, applied in non-electric variable control, control/regulation systems, and simultaneous control of multiple variables, etc., can solve the problems of fuel tank exhaust pollution, short life cycle, poor economy, etc., to ensure experimental The effect of safety, high degree of integration and convenient operation

Pending Publication Date: 2018-04-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former carries storage tanks filled with liquid nitrogen, gas nitrogen, and halon 1301 to fill the fuel tank with inert gas during flight to convert the oxygen in the fuel tank and reduce the oxygen concentration, but this method increases the aircraft load and life cycle Short, poor economy, it is difficult to achieve full inertization
Since the late 1970s, airborne inerting technology, which uses airborne equipment to extract inert gas, has developed rapidly. The airborne nitrogen inerting technology that uses hollow fiber membranes to produce nitrogen-enriched gas is currently the most widely used and most mature However, it also has disadvantages such as low separation membrane efficiency, high bleed air pressure, easy clogging of the separation membrane, and pollution of the environment by the exhaust of the fuel tank.

Method used

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  • Experiment table based on controllable catalytic combustion for reducing fuel tank combustibility
  • Experiment table based on controllable catalytic combustion for reducing fuel tank combustibility
  • Experiment table based on controllable catalytic combustion for reducing fuel tank combustibility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 as shown, figure 1 It is a schematic diagram of the experimental platform for reducing the flammability of the fuel tank based on the controllable catalytic combustion of the present invention, the inert gas inerting subsystem, the flight environment simulation subsystem, the fuel filling and suction subsystem, the fuel heating and cooling subsystem, and the fuel pre-washing subsystem , a monitoring control subsystem; the monitoring and control subsystem controls the operation of the inert gas inerting subsystem, the flight environment simulation subsystem, the fuel filling and suction subsystem, the fuel heating and cooling subsystem, and the fuel pre-washing subsystem. Among them, the inert gas inerting subsystem is used to generate mixed inert gas for fuel tank flushing and washing inerting experiments, the flight environment simulation subsystem is used to simulate the temperature and pressure of the aircraft flight environment, etc., and the fuel f...

Embodiment 2

[0041] Such as image 3 as shown, image 3 For the flight environment simulation subsystem of the present invention, the air passes through the first air compressor 101, the first filter drier 102, the air storage tank 103, the air flow regulating valve 104, the air pressure regulating valve 105, the vacuum tank 106, the first Refrigerator 108, the first heater 109, the first temperature sensor 110, the first pressure sensor 111, the first air adjustable valve 112 to simulate the real flight environment of the aircraft, the vacuum pump 107 is used to suck the air in the vacuum tank 106, so that It generates a low-pressure environment, the first refrigerator 108 and the first heater 109 are used to generate air with different ambient temperatures, and finally the simulated ambient air enters the gas phase space of the oil tank 218 .

Embodiment 3

[0043] Such as Figure 4 as shown, Figure 4 It is the fuel filling and pumping subsystem of the present invention, which fills and sucks fuel into the fuel tank 218 according to the indication of the liquid level gauge 2007 during operation, so as to simulate the inerting performance under different fuel loading ratios. When fuel is added to the fuel tank 218, the second fuel flow adjustable valve 304 and the third fuel flow adjustable valve 307 are closed, and the fuel flows through the oil storage tank 301, the gate valve 302, the first fuel flow adjustable valve 303, and the fuel oil in sequence. The filter 305, the second fuel pump 306, the fourth fuel flow adjustable valve 308, and the fifth fuel flow adjustable valve 309 reach the fuel tank 218; when the fuel in the fuel tank is sucked, the first fuel flow adjustable valve 303 and the fourth fuel flow are closed. The adjustable fuel flow valve 308 opens the second adjustable fuel flow valve 304 and the third adjustable...

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PUM

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Abstract

The invention discloses an experiment table based on controllable catalytic combustion for reducing fuel tank combustibility, and belongs to the technical field of fire and explosion protection. The experiment table comprises an inert gas inerting subsystem, a flight environment simulation subsystem, a fuel oil injecting and pumping subsystem, a fuel oil heating and cooling subsystem, a fuel oil pre-washing subsystem and a monitoring and controlling subsystem. By employing the experiment table, simulation experiments on the inerting performance in different flight environments and under different oil-carrying rates can be carried out, automatic acquisition, output and backup of each parameter are achieved, and each assembly is automatically controlled and adjusted through an upper industrial control computer; the experiment table is simple to construct, high in integration degree and convenient and safe to operate, and the experiment result can provide a design basis for the technological development of controllable catalytic combustion for reducing fuel tank combustibility.

Description

technical field [0001] The invention belongs to the technical field of fire prevention and explosion protection, and specifically refers to a test bench for reducing the flammability of a fuel tank based on controllable catalytic combustion. Background technique [0002] During the Vietnam War, the U.S. Air Force lost thousands of aircraft due to ground fire attacks, among which the proportion of aircraft crashes and fatalities was as high as 50% due to the fire and explosion of aircraft fuel tanks. The combustible vapor of the fuel tank in the center wing was ignited and caused an explosion, which killed the whole crew. Therefore, the safety of the aircraft fuel tank is related to the overall safety of the aircraft. How to strengthen the fire and explosion-proof performance of the aircraft fuel tank and reduce the secondary loss of personnel and equipment caused by the fuel tank explosion, It has attracted great attention from researchers and management departments. [000...

Claims

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Application Information

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IPC IPC(8): G01M99/00G05D27/02
CPCG05D27/02G01M99/00G01M99/002
Inventor 李超越冯诗愚彭孝天邵垒刘卫华
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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