Burner for researching oscillation combustion characteristic of metal particles

A metal particle, oscillating combustion technology, used in machines/engines, jet propulsion devices, rocket engine devices, etc., can solve the problem of damage to the engine combustion chamber, engine performance problems, combustion instability, destructiveness, and high complexity. Randomness and other problems, to achieve the effect of improved safety and good sealing

Active Publication Date: 2016-06-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the combustion instability of metal particles under oscillating airflow is highly destructive, highly complex, and highly random, which causes great trouble to the working performance of the engine. Wh

Method used

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  • Burner for researching oscillation combustion characteristic of metal particles
  • Burner for researching oscillation combustion characteristic of metal particles
  • Burner for researching oscillation combustion characteristic of metal particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Battery of the present invention adopts outdoor liquefied gas tank to provide fuel, as Image 6 As shown, the air pipe is connected to the fuel injection port 16 of the metal joint 2, and the gas, oxidizer and dilution gas can be respectively delivered to the micro burner only by rotating the button switch on the gas tank.

[0031] Burners for studying the oscillating combustion properties of metal particles, such as Image 6 Shown includes: trumpet 1, metal joint 2, porous medium 3, sealing joint 4, stainless steel tube 5, metal sleeve 6, flame stabilizer 7, metal particle delivery port 8, upper half quartz tube 9, cross bar 10, bracket sleeve 11. Bracket 12, base 13, horn cover 14, hole joint 15, injection port 16, graphite gasket 17, sound pressure sensor interface 18, high temperature resistant gasket 19.

[0032]Connection relationship: the speaker 1 is fixedly connected to the speaker cover 14, the speaker cover 14 is connected to the hole joint 15 through thread...

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PUM

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Abstract

The invention relates to a burner for researching an oscillation combustion characteristic of metal particles, in particular to combustion of the metal particles in oscillation air currents, and belongs to the field of unstable combustion. The burner consists of a horn sounder, a horn port cover, an opposite hole joint, a metal joint, a porous medium, a stainless steel cold pipe and the like. The burner uniquely adopts the horn generator to provide external acoustic excitation, and can simulate the combustion condition of aluminum powder under a low-frequency oscillation environment; and as the combustion of the aluminum powder in a solid engine is in a low-frequency acoustic oscillation environment, the simulation environment is more appropriate, and the obtained result provides more reliable theory basis for unstable combustion analysis in the solid engine. The burner adopts a premixed fuel to replace a propellant, so that the safety is improved; the combustion condition of the added aluminum powder can be directly observed in the burner; and the burner can be repeatedly experimented. The burner is excellent in use value on future research of unstable combustion of the metal parts in the oscillation air currents.

Description

technical field [0001] The invention relates to a burner used for studying the oscillating combustion characteristics of metal particles, in particular to the combustion of metal particles in an oscillating air flow, and belongs to the field of micro-unstable combustion. Background technique [0002] With the development of aerospace science and technology, solid rocket motors have technical advantages such as large thrust-to-weight ratio and easy operation compared to liquid engines, making them highly sought after. However, the instability of propellant combustion in solid motors will cause pressure in the combustion chamber The shock will lead to catastrophic consequences when it is severe, so the requirements for the working stability of solid motors are getting higher and higher. [0003] One way to solve the solid engine is to add fine metal particles to viscously damp the vibration of the sound pressure. Metal particles can not only increase the energy density of the ...

Claims

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Application Information

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IPC IPC(8): F02K9/42F02K9/60F02K9/96
CPCF02K9/42F02K9/60F02K9/96
Inventor 李军伟王燕宾冯芒孙兵兵王宁飞
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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