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Gas collection cavity plasma activation explosion-assisting rotating detonation combustion chamber

A technology of plasma and gas collection chamber, which is applied in the field of aerospace power, can solve the problem of high difficulty in triggering detonation combustion, achieve the effects of reducing critical ignition energy, shortening distance, and reducing ignition trigger conditions

Active Publication Date: 2022-02-01
AIR FORCE UNIV PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the related technologies mentioned above, because detonation combustion is a process of gradually changing from deflagration to detonation, the inventor believes that there is a detonation combustion compared with deflagration There is a problem with the high difficulty of triggering detonation combustion

Method used

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  • Gas collection cavity plasma activation explosion-assisting rotating detonation combustion chamber
  • Gas collection cavity plasma activation explosion-assisting rotating detonation combustion chamber
  • Gas collection cavity plasma activation explosion-assisting rotating detonation combustion chamber

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Experimental program
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Embodiment 1

[0032] Embodiment 1 of the present application discloses a plasma-activated detonation-assisted rotary detonation combustion chamber in a gas collection chamber. When the combustion chamber is connected to a high-voltage power supply, the discharge phenomenon between the high-voltage end and the low-voltage end of the high-voltage power supply is used to ionize the air to form a large Volumetric, high-concentration, low-temperature plasma, furthermore, when the voltage difference between the low-voltage end and the high-voltage end of the high-voltage power supply is large enough, a large amount of active species is generated.

[0033] refer to figure 1 , a plasma activated detonation boosting rotary detonation combustor in a gas collection chamber includes an inner casing 1 , an outer casing 2 and a discharge assembly 3 .

[0034] refer to figure 2 , The inner casing 1 is provided with a fuel supply passage 4 through which the fuel required for the detonation combustion cha...

Embodiment 2

[0043] The difference between the second embodiment and the first embodiment lies in the discharge assembly 3 .

[0044] refer to image 3 , Figure 4 and Figure 5 , the discharge assembly 3 comprises an insulating ring 32 and a metal mesh ring 33 positioned at the inner wall of the insulating ring 32, the insulating ring 32 is made of ceramic material, the insulating ring 32 is embedded on the detonation-supporting section 11 and both ends of the insulating ring 32 are connected to the detonation-supporting section 11 Fixed connection, the metal mesh is fixedly connected to the inner wall of the insulating ring 32, and the distance from the side wall of the metal mesh ring 33 to the side wall of the insulating ring 32 is greater than the distance between the inner shell 1 and the outer shell 2, so that ionization occurs in the metal mesh Between the ring 33 and the inner casing 1 . The insulating ring 32 is provided with a through hole 321, and the metal mesh ring 33 is e...

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Abstract

The invention relates to a gas collection cavity plasma activation explosion-assisting rotating detonation combustion chamber which comprises an inner shell, an outer shell and a discharge assembly, a fuel supply channel is formed in the inner shell, the outer shell comprises an explosion-assisting section and a combustion section in the axial direction, the fuel supply channel serves as a distinguishing point of the explosion-assisting section and the combustion section, the explosion-assisting section is located on the upstream of the outer shell, the explosion assisting section and the inner shell form an annular airflow channel together, the fuel supply channel is communicated with the annular airflow channel, the combustion section and the inner shell form an annular combustion chamber together, the annular airflow channel is communicated with the annular combustion chamber, and the upstream of the inner shell is electrically connected with the low-voltage end of the high-voltage power source. The discharging assembly is mounted on the explosion-assisting section and is electrically connected with the high-voltage end of the high-voltage power supply. The combustion chamber has the advantages that the detonation-to-detonation distance is shortened, the critical detonation cell size is reduced, the critical ignition energy is reduced, the equivalence ratio lower limit is widened, the ignition triggering condition is reduced, and meanwhile active substances are prevented from being consumed in advance to a certain degree.

Description

technical field [0001] The present application relates to the technical field of aerospace power, in particular to a gas collection cavity plasma activation detonation-supporting rotating detonation combustion chamber. Background technique [0002] Rotary detonation combustor is a kind of annular combustor using detonation combustion method. Detonation combustion has high heat release intensity per unit time and low entropy increase, so it is the goal that people are constantly pursuing to realize stable and reliable detonation combustion and apply it to engineering practice to develop new propulsion and power technologies. [0003] In the related technology, the fuel is supplied by the fuel supply channel at the head of the combustion chamber, the air enters the combustion chamber through the intake pipe at the head of the combustion chamber, and the pre-detonation tube ignites the premixed fuel formed by fuel and air to generate deflagration, and the deflagration occurs in...

Claims

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Application Information

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IPC IPC(8): F23R3/52F23R3/28F23R7/00
CPCF23R3/52F23R3/28F23R7/00
Inventor 宋飞龙吴云郭善广金迪杨诏胥世达周剑平陈鑫
Owner AIR FORCE UNIV PLA