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Weak knock method and device based on unbalanced plasma propelling gas

A plasma and non-equilibrium technology, applied in the direction of electromechanical devices, electrical components, ramjet engines, etc., can solve the problems that are difficult to promote to practical applications, the difficulty of stabilizing the detonation wave, etc., and achieve the effect of strengthening the weak detonation process

Inactive Publication Date: 2014-07-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These technologies using sustained detonation waves have encountered difficulties in stabilizing the detonation waves, making it difficult to generalize to practical applications

Method used

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  • Weak knock method and device based on unbalanced plasma propelling gas
  • Weak knock method and device based on unbalanced plasma propelling gas
  • Weak knock method and device based on unbalanced plasma propelling gas

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Embodiment 1: A weak detonation method based on non-equilibrium plasma propellant gas, the steps are: the first step is to generate a high-speed non-equilibrium plasma jet: the oxidant and fuel gas at normal temperature and pressure are converted according to the chemical reaction equivalent Ratio of 1.0 to 1.5 times, the mass flow rate of 1kg / s is fed into the plasma zoom tube with a voltage of 1kV to 20kV, a frequency of 10kHz to 50kHz, and a magnetic induction of 0.2T to 2.5T, resulting in a conductivity of 10S / Non-equilibrium plasma jet with magnetic fluid characteristics of m~20S / m, speed 300m / s~500m / s, temperature 500K~800K, pressure 0.96atm~0.98atm. The fuel gas is any one of C1-C4 hydrocarbons, hydrogen, carbon monoxide, natural gas, petroleum gas and coal gas, and the oxidant is air or oxygen. In order to improve the conductivity, an appropriate proportion of gas such as argon or helium, which is easy to ionize, can be added to the fuel. The electric field an...

Embodiment 2

[0028] Embodiment 2: The electrodes in the plasma zoom generation tube are a row of needle-shaped electrodes provided at the entrance of the plasma, and a ring-shaped electrode provided at the exit, and the two electrodes are connected to the power supply, such as image 3 shown.

[0029] Other parts of this embodiment are the same as Embodiment 1.

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Abstract

The invention discloses a weak knock method and device based on unbalanced plasma propelling gas. The device comprises a plasma contraction generating pipe, weak knock chamber and a magnetic fluid power generating chamber. The plasma contraction generating pipe is provided with a fuel gas and oxidant inlet and connected with the weak shock chamber. The weak shock chamber is connected with the magnetic fluid power generating chamber. The magnetic fluid power generating chamber supplies power for the plasma contraction generating pipe. The weak knock device has the advantages that weak knock inlet parameters are adjusted by utilizing the unbalanced plasma propelling gas, the outlet parameters of the unbalanced plasma propelling gas can be kept in a stable range when external parameters change, stable inlet parameters of weak knock are achieved, and stable and continuous weak knock can be achieved.

Description

technical field [0001] The invention relates to a stable detonation method, in particular to a weak detonation method and device based on non-equilibrium plasma propellant gas. Background technique [0002] Combustion is a very important process in the propulsion system and power generation system, which converts the chemical energy of the fuel into the thermal energy of the working fluid, and then into kinetic energy or electrical energy. At present, the combustion process of the engine and power generation technology is basically handled according to the isobaric combustion process, and the thermal cycle efficiency is low, which seriously restricts the improvement of the overall efficiency of the engine and power generation technology. [0003] Detonation refers to the combustion process in which the combustion surface propagates to the unburned mixture in the form of detonation waves due to the high energy excitation of the combustion mixture. The detonation wave can gen...

Claims

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Application Information

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IPC IPC(8): F02K7/10H02K7/18H02K44/08
Inventor 顾璠王浩泽
Owner SOUTHEAST UNIV
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