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Adjustable Combustion Atmosphere Burner and Experimental Method

A burner and atmosphere technology, applied in combustion methods, combustion chambers, combustion equipment, etc., to achieve the effects of convenient operation, simple structure design, and reliable sample introduction

Active Publication Date: 2022-06-14
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to avoid the deficiencies of the prior art, the present invention proposes a burner with adjustable combustion atmosphere and an experimental method, which can realize powder fuel, liquid fuel and block The burner with reliable injection of fuel and ignition and combustion under high-pressure complex atmosphere solves the problems in the prior art that the fuel is not widely applicable and the atmosphere is single

Method used

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  • Adjustable Combustion Atmosphere Burner and Experimental Method
  • Adjustable Combustion Atmosphere Burner and Experimental Method
  • Adjustable Combustion Atmosphere Burner and Experimental Method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

Specific embodiment 1:

[0056]Step 1. Install the O-ring 14 between the main body of the combustion chamber and the bottom plate 12 of the combustion chamber and fasten it with bolts. Fill the corresponding O-rings in the laser incident window 17, the quartz glass observation window 7 and the laser stopper window 21 respectively. Press the quartz glass 8, the germanium glass 19, and the laser block 23 into the corresponding windows respectively, and screw into the corresponding pressing screws, and tighten them with a hook wrench. The sealing electrode 2 is respectively loaded into the burner side wall 5 and the burner top plate 3, and the electromagnet 16-5 of the powder fuel sampling mechanism 3 is connected to the sealing electrode 2 of the burner top plate 3, and the top surface of the burner top plate The female thread of the check valve is externally connected to the male thread, and tightened with a wrench.

[0057] Screw the four-way interface into the burner air inle...

specific Embodiment 2

[0058] Step 2. Close the exhaust valve of the burner, open the pressure signal acquisition system, collect the pressure data of the combustion chamber cavity, open the intake valve connected to the high-pressure nitrogen source, and inject nitrogen into the combustion chamber in stages to make the internal pressure of the burner reach 1MPa in sequence , 2MPa, 3MPa, and 4MPa, close the pressure reducing valve and intake valve, and keep it for 5 minutes. If the pressure in the combustion chamber does not change, make sure that the airtightness of the combustion chamber is good, open the exhaust valve to discharge the gas in the combustion chamber, and loosen the combustion chamber with a wrench. screw on the top plate 3 on the device, and remove it.

Specific embodiment 2:

[0060] Step 1. Install the O-ring 14 between the main body of the combustion chamber and the bottom plate 12 of the combustion chamber and fasten it with bolts. Fill the corresponding O-rings in the laser in...

specific Embodiment 3

[0064] Step 4. Turn on the pressure acquisition system, use high-pressure nitrogen source and high-pressure oxygen source to feed 1MPa nitrogen and 0.5MPa oxygen into the burner, and then wait for five minutes to observe the pressure in the burner through the pressure acquisition system. Good air tightness. Trigger the stabilized power supply, the electromagnet 16-5 in the powder fuel sampling mechanism 16 shrinks, the rotating baffle 16-2 rotates, the boron particles land, and then the laser igniter is turned on, and the spectrometer and high-speed camera are triggered at the same time. The boron particles are ignited by contacting the laser beam after passing through the powder dispersion device 6 . At this time, the spectrometer collected the combustion spectrum of boron particles, and the high-speed camera captured the flame structure of boron particles.

[0065] Step 5. Turn off the stabilized power supply, stop the laser generator, high-speed camera and spectrometer, op...

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Abstract

The invention relates to a burner with adjustable combustion atmosphere and an experimental method, belonging to the technical field of fuel combustion; comprising a combustion chamber, a liquid fuel sampling mechanism, a powder fuel sampling mechanism, a powder dispersing mechanism, a block fuel lifting platform, and a water vapor generating device The fuel combustion experiments in three different states are realized through three feeding mechanisms. The powder dispersing mechanism in the powder fuel sampling mechanism enables boron particles to evacuate, and reduces the falling speed of boron particles, reducing the flow of air to boron. The effect of particle ignition and combustion process enables reliable ignition of boron particles in a relatively dispersed state. The water vapor atmosphere is provided by the water vapor generating device, and the humidity sensor is used to monitor the water vapor concentration in the burner in real time, so that the quantitative control of the water vapor concentration in the burner can be realized. The burner is connected with high-pressure gas sources such as nitrogen, oxygen, and argon, and cooperates with the real-time monitoring of the pressure sensor to realize the purpose of adjusting the concentration and pressure of various atmospheres in the burner.

Description

technical field [0001] The invention belongs to the technical field of fuel combustion, and in particular relates to a burner with an adjustable combustion atmosphere and an experimental method, which can realize reliable sampling of liquid fuel, powder fuel and block fuel, and can ignite and burn in a high-pressure complex atmosphere. Background technique [0002] Solid propellants are the energy source and working medium source of solid rocket motors. In order to increase the energy of solid propellants, metal powders such as boron powder, magnesium powder, and aluminum powder are often added to solid propellants, which can not only increase the specific impulse of the propellant And density, can also suppress the unstable combustion of propellant. However, the ignition and combustion properties of these metal powders are poor, and it is difficult to achieve efficient combustion of metal powders in propellants. Therefore, it is necessary to study the ignition and combustio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/12G01N33/22G01N21/84G01J3/28F23R5/00F23R3/42F23R3/28
CPCG01N31/12G01N33/22G01N33/222G01J3/28G01N21/84F23R3/28F23R3/42F23R5/00G01N2021/8411
Inventor 刘林林宋英恺胡松启
Owner NORTHWESTERN POLYTECHNICAL UNIV
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