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Periodic alternating current drive low-temperature plasma ignition method and system

A low-temperature plasma, AC-driven technology, applied in the field of plasma ignition methods and systems, can solve the problem of limiting low-temperature plasma ignition and application prospects, can not meet the requirements of ignition of aeroengines, can not meet the requirements of PDE ignition and detonation and test DDT process And other issues

Inactive Publication Date: 2014-08-20
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The existing AC-driven low-temperature plasma power supplies manually adjust the voltage step by step, implement discharge, and generate low-temperature plasma. Therefore, the existing power supply equipment and usage methods cannot meet the ignition requirements of aeroengines, especially PDE ignition. Detonation and test DDT process requirements, which limit the use of low-temperature plasma for ignition and application prospects

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  • Periodic alternating current drive low-temperature plasma ignition method and system
  • Periodic alternating current drive low-temperature plasma ignition method and system

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Embodiment Construction

[0033] refer to Figure 1 to Figure 2 Examples of the present invention will be described.

[0034] In order to make the above objects, features and advantages more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Such as figure 1 As shown, a periodic AC-driven low-temperature plasma ignition method includes the following steps:

[0036] S1. The igniter is installed at an appropriate position in the combustion chamber, its high-voltage electrode and low-voltage electrode are connected to the high-voltage end and low-voltage end of the low-temperature plasma power supply, and the frequency controller is connected to the low-temperature plasma power supply;

[0037] S2. Trigger the switch of the low-temperature plasma power supply and the frequency controller, and adjust the output parameters of the power supply;

[0038] S3, adjusting the control discharge frequenc...

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Abstract

The invention discloses a periodic alternating current system low-temperature plasma ignition method and a periodic alternating current drive low-temperature plasma ignition device, an relates to the technical field of aerospace engine ignition, combustion and propulsion. The method comprises the following steps of: arranging an ignitor at a proper position of a combustion chamber, wherein a high voltage electrode and a low voltage electrode of the ignitor are connected with a high voltage end and a low voltage end of a low-temperature plasma power source, and a frequency controller is connected with the low-temperature plasma power source; triggering the low-temperature plasma power source and a frequency controller switch and adjusting power output parameters; adjusting control discharge frequency of the frequency controller and discharge time of each period; and providing a trigger signal to the low-temperature plasma power source by the frequency controller, discharging by the power source, and discharging to ignite according to certain frequency by the ignitor. The invention also discloses the corresponding periodic alternating current drive low-temperature plasma ignition device. The method and the device have the advantages of large-size ignition, capabilities of shortening ignition delay time, realizing high-efficiency reliable ignition in the aspects of high-altitude low-voltage supersonic speed combustion, lean burn and the like and improving the performance of an engine, industrial energy conservation and emission reduction.

Description

technical field [0001] The invention relates to the technical field of ignition and combustion propulsion of aerospace engines, in particular to a method and system for periodically AC-driven low-temperature plasma ignition. Background technique [0002] With the development of the arms race, aircraft powered by aero-engines and ramjet engines are gradually moving towards adjacent space, with the purpose of improving the anti-reconnaissance and anti-interception capabilities of aircraft. Engines flying at high altitude, high speed, low pressure, and low temperature have very bad working conditions in the combustion chamber, which is prone to problems such as difficulty in low-pressure ignition, poor combustion stability, and reduced combustion efficiency. In order to improve the reliability of engine ignition and broaden the stable working range, a reliable ignition method is very important, so it is urgent to develop a new high-efficiency ignition technology. [0003] Comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02K9/95F02K7/10F02K7/02
Inventor 郑殿峰张义宁李存标宫继双万京林冯定高
Owner PEKING UNIV
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