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Dual-mode plasma igniter

A plasma and igniter technology, which is applied in the direction of machines/engines, jet propulsion devices, gas turbine devices, etc., can solve problems such as short life, electrode ablation, and narrow ignition range, so as to improve reactivity, prevent cathode ablation, The effect of prolonging the life of the cathode

Active Publication Date: 2019-08-20
DALIAN NATIONALITIES UNIVERSITY
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of electrode ablation, short life and narrow ignition range of existing plasma igniters, this application provides a dual-mode plasma igniter

Method used

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  • Dual-mode plasma igniter

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: taking this as an example to further describe and illustrate the present application.

[0020] This embodiment provides a dual-mode plasma igniter, including: 1 anode, 1 replaceable cathode head, 1 hollow cathode connecting rod, 1 set of coils, 1 set of embedded anodes, 1 fixed bracket, and 1 insulating Layer, 1 cooling air inlet, 1 compressed air inlet, 1 cyclone, 1 water cooling tank. The anode is the first major component for achieving a thermally balanced plasma discharge, with a water-cooled tank inside for cooling; the replaceable cathode tip is the second component for achieving a thermally balanced plasma discharge, characterized in The surface is processed with cooling channels for gas circulation; the hollow cathode connecting rod is a hollow structure used to connect the replaceable cathode head and introduce cooling air into...

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Abstract

The invention discloses a dual-mode plasma igniter. The igniter comprises a shell, an anode, a hollow cathode connecting rod, a replaceable cathode head, a coil, an embedded anode, an insulating layer, a cooling gas inlet, a compressed air inlet, a swirler and a water cooling groove, wherein the anode communicates with one side of the shell, and the water cooling groove for cooling is formed in the inner wall of the anode; the hollow cathode connecting rod is positioned in the shell, the replaceable cathode head communicates with one end of the hollow cathode connecting rod, the cooling gas inlet is formed in the other end of the hollow cathode connecting rod, the insulating layer is wrapped around the outer surface of the hollow cathode connecting rod, and the embedded anode is arranged on the surface of the insulating layer; and the swirler is arranged between the insulating layer and the shell, the compressed air inlet is formed in one side of the shell, and the coil is located on the periphery of the shell. According to the igniter, non-equilibrium plasma discharges, so that the reaction activity is improved; and the discharge voltage required by thermal equilibrium plasma is reduced, and the effects of preventing cathode ablation and prolonging the service life of the cathode are achieved.

Description

technical field [0001] The invention relates to an igniter, in particular to a dual-mode plasma igniter. Background technique [0002] In order to enable the fuel to burn efficiently and cleanly to achieve the purpose of energy saving and emission reduction, various ignition and combustion methods have been designed. Among them, plasma ignition technology has become a new technology in the field of combustion technology research due to its high ignition energy and good reliability. [0003] At present, most plasma ignition technologies are developed based on the theory of thermal equilibrium plasma. Thermal equilibrium plasma ignition has high ignition energy, which can make the fuel ignite rapidly. However, due to the high temperature of thermal equilibrium plasma technology, it is easy to reduce the life of the electrode. Therefore, it is necessary to replace the electrodes at certain intervals during use. This has caused a series of problems such as increased cost and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C7/266
CPCF02C7/266
Inventor 宋鹏
Owner DALIAN NATIONALITIES UNIVERSITY
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