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Airflow Compression Directional Focused Plasma Arc Ignition Nozzle

A technology of plasma arc and airflow compression, which is applied in the direction of combustion ignition, ignition by electric spark, jet propulsion device, etc. It can solve the problems that the plasma arc cannot be effectively controlled and the ignition effect is not optimal, so as to prolong the service life and reliability Sex, increase the effect of air velocity

Active Publication Date: 2018-08-17
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention improves the existing electric nozzle to achieve the purpose of improving the above-mentioned problem that the plasma arc cannot be effectively controlled, resulting in suboptimal ignition effect

Method used

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  • Airflow Compression Directional Focused Plasma Arc Ignition Nozzle
  • Airflow Compression Directional Focused Plasma Arc Ignition Nozzle

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Embodiment Construction

[0017] Below in conjunction with accompanying drawing this patent is described in more detail

[0018] combine Figure 1-2 The present invention includes 1 cathode head 2 electric nozzle internal cavity 3 loading and unloading hexagonal head 4 connecting thread 5 nozzle 6 anode tube 7 air inlet 8 cathode column. When the gas flow directional energy-gathering plasma arc ignition nozzle of the present invention starts to work, the plasma instantly compresses the air, and the compressed air is ejected from the nozzle 5 due to the large flow channel resistance of the cavity of the 2 electric nozzles, and at the same time, the internal cavity of the 2 electric nozzles has a variable cross section The structure realizes the accelerated flow of air from the 7th air inlet to the 5th nozzle, realizes that a longer plasma arc is ejected from the 5th nozzle, and ignites the fuel. Because the above-mentioned structural design ensures that a highly focused plasma arc can be ejected from t...

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Abstract

The invention discloses an airflow compression oriented condensed plasma arc ignition burner which is mainly composed of an outer anode tube and an inner cathode tube, wherein an elliptical air inlet hole is formed in the root of the anode tube; due to the structure, high-energy plasma arc can be compressed and condensed through differential pressure formed between air in a chamber between the cathode and the anode and outside and then is ejected in an oriented manner through the burner, so that the jet length and energy gathering of the plasma arc are improved. The ignition burner disclosed by the invention is applied to a gas turbine plasma igniter burner, and the ignition efficiency and reliability of the plasma igniter can be obviously improved.

Description

technical field [0001] The invention belongs to the field of power devices, in particular to a plasma ignition device for starting and igniting a gas turbine or a boiler. technical background [0002] Gas turbine plasma igniter provides a plasma ignition device for starting and igniting thermal equipment such as gas turbines or boilers. The function of the plasma igniter is to partially split the air-fuel (liquid or gas) mixture in the combustion chamber of the gas turbine into plasma (that is, the fourth state of substance existence) by applying external energy (electric field, high temperature, etc.), reducing the activation of fuel to start burning Can, in order to achieve accelerated combustion and strengthen the combustion effect of the device. [0003] Plasma igniter has been used as a new type of starting ignition device, but there are still many problems in the current plasma igniter, such as the inability to effectively control the plasma arc, resulting in suboptim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02C7/266F23Q3/00
CPCF02C7/266F23Q3/00
Inventor 杨家龙包东冉张建国贾雄斌
Owner HARBIN ENG UNIV