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Experimental device and experimental method for researching ignition combustion process of modified aluminum powder

A technology of combustion process and experimental device, which is applied in the direction of chemical analysis and color/spectral property measurement using combustion, which can solve the problems of difficult collection of residues of combustion products after sample replacement, flow combustion of engines, etc., and achieves simple operation, easy parallel comparison, Safe and easy operation

Inactive Publication Date: 2021-02-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for modified aluminum powder, it is difficult to carry out flow combustion in traditional engines, and it is also difficult to define its ignition start and combustion end and observe its combustion process.
Especially in the combustion of modified aluminum powder in a specific atmosphere, there are problems such as sample replacement and difficult collection of combustion product residues.

Method used

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  • Experimental device and experimental method for researching ignition combustion process of modified aluminum powder
  • Experimental device and experimental method for researching ignition combustion process of modified aluminum powder
  • Experimental device and experimental method for researching ignition combustion process of modified aluminum powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] combine figure 1 , figure 2 , image 3 As shown, an experimental device for studying the combustion performance of modified aluminum powder in a non-air atmosphere combustion process in this embodiment includes a gas delivery device, an ignition device, a combustion chamber and a detection device.

[0039] The gas delivery device includes a high-pressure gas bottle 1 , a volume flow meter 2 , a gas delivery pipe 3 , and an air inlet 5 . The high-pressure gas bottle is used to store the combustion atmosphere needed in the experiment, and can be replaced according to the experiment requirements. In this example, carbon dioxide is used. The outlet of the high-pressure gas bottle 1 is connected to the volume flow meter 2, and the volume flow meter 2 detects the volume flow rate of the gas delivery. After the experiment starts, the high-pressure gas bottle 1 is opened, and the gas in the bottle passes through the volume flow meter 2 and then enters the combustion chamber...

Embodiment 2

[0045] An experimental device for studying the combustion performance of modified aluminum powder in a non-air atmosphere combustion process in this embodiment, its basic structure is the same as that of Embodiment 1, the difference is that the sample placement area is replaced by a heat-resistant crucible, and the The argon (Ar) cylinder is used as a high-pressure gas cylinder 1 and is connected to the volume flow meter 2 and the gas delivery pipe to 3.

[0046] During use, take by weighing 100mg of aluminum / water-based high-energy fuel, place it in the ignition area, place the thermocouple 23 close to the sample combustion area, and send the sample pushing device 13 into the combustion chamber, then slowly open the high-pressure gas bottle 1 to Introduce Ar gas into the combustion chamber at a speed of 40ml / min for ten minutes, use the laser igniter 6 to ignite, and trigger the high-speed camera 16 and fiber optic spectrometer 19 to record the visual image of the combustion p...

Embodiment 3

[0048] An experimental device for studying the combustion performance of modified aluminum powder in a non-air atmosphere combustion process of this embodiment, its basic structure is the same as that of Embodiment 1, the difference is that: the thermocouple 23 is placed close to the sample combustion area, and the thermocouple 23 passes through The slide rail groove 12 is connected with the temperature data acquisition instrument 21 and synchronized with the laser igniter 6 . The thermocouple type is K type.

[0049] When in use, weigh 50 mg of modified aluminum powder with 0%, 2%, 5%, 8% and 10% ammonium perchlorate (AP) respectively, use argon (Ar) as the combustion atmosphere, and use a high-speed camera after ignition 16. The optical fiber spectrometer 19 records the visual image of the combustion process and the spectral signal during the combustion process respectively, and the intensity of the spectral signal can be converted into the temperature during the combustion ...

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Abstract

The invention relates to an experimental device and method suitable for researching the ignition combustion process of modified aluminum powder, the device comprises a combustion chamber, an ignitiondevice, a gas conveying device and a detection device, the combustion chamber comprises a cover body arranged on an experimental platform, and the cover body and the experimental platform form the combustion chamber; an ignition window is formed in the upper side surface of the cover body; the ignition device comprises a laser igniter and a laser light outlet, the laser light outlet directly facesthe ignition window, and the laser igniter ignites a sample in the combustion chamber through the laser light outlet; the gas conveying device comprises a high-pressure gas tank and a gas conveying pipe, and the gas conveying pipe conveys gas in the high-pressure gas tank into the combustion chamber; the detection device comprises an optical fiber spectrometer and a temperature acquisition device, the device or the method can react in real time and record the combustion temperature in the experiment process, and the time points of ignition starting and combustion ending of the modified aluminum powder are accurately defined.

Description

technical field [0001] The invention relates to an experimental device and an experimental method for studying the ignition and combustion process of modified aluminum powder, and belongs to the technical field of material performance testing. Background technique [0002] Aluminum is the most abundant metal element in the earth's crust, and it has many advantages, such as high energy density, large specific impulse, and the combustion products are safe and non-polluting to the environment and human body, and aluminum is the most abundant metal element in the earth's crust. The mining means and refining technology are very mature, the acquisition channels are convenient, and the price also has certain advantages. In particular, aluminum, as a highly active metal, can achieve combustion in various atmospheres, such as oxidizing water and carbon dioxide, which can meet the needs of various scenarios. However, for modified aluminum powder, it is difficult to carry out flow com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/12G01N21/27
CPCG01N31/12G01N21/27
Inventor 孙运兰季言午朱宝忠代宝鑫郭朋于海龙
Owner CHANGZHOU UNIV
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