Device and method for producing large-volume homogenous atmospheric-pressure discharge

A large-volume, atmospheric-pressure technology, applied in the direction of electrical components, plasma, etc., can solve the problems of large-volume uniform discharge with small discharge gap, unsuitable for industrial applications, complex process conditions, etc., achieving low cost, suitable for industrial promotion, and application prospects wide range of effects

Inactive Publication Date: 2017-06-13
HEBEI UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] One of the purposes of the present invention is to provide a device for generating large-volume atmospheric pressure uniform discharge, so as to solve the problems of uneven discharge, small discharge gap and complex process conditions unsuitable for industrial application in existing dielectric barrier discharge devices
[0005] The second object of the present invention is to provide a method for generating large-volume uniform discharge at atmospheric pressure, so as to solve the problems that the existing dielectric barrier discharge method cannot produce large-volume uniform discharge in the atmospheric environment and the discharge gap is small

Method used

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  • Device and method for producing large-volume homogenous atmospheric-pressure discharge
  • Device and method for producing large-volume homogenous atmospheric-pressure discharge
  • Device and method for producing large-volume homogenous atmospheric-pressure discharge

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Embodiment 1

[0040] Embodiment 1, a device for generating large-volume atmospheric pressure uniform discharge.

[0041] Such as figure 1 As shown, the device provided by the present invention includes a discharge mechanism and a power supply circuit. The discharge mechanism can generate uniform discharge with large volume and atmospheric pressure in the air environment, and the power supply circuit is an AC power supply 4, which is used to provide the discharge mechanism with the required discharge voltage.

[0042]The discharge mechanism in this embodiment includes a dielectric tube 2 and a flat plate electrode 3 . The dielectric tube 2 is filled with a conductive liquid 1. The upper end of the dielectric tube 2 is open, and the lower end is closed and hemispherical. The material can be quartz, ordinary glass, mica or polytetrafluoroethylene. The diameter is 3mm. The conductive liquid 1 is tap water, and the hemispherical end of the dielectric tube 2 is the discharge end. The conducti...

Embodiment 2

[0044] Embodiment 2, a method for generating large-volume atmospheric pressure uniform discharge.

[0045] In this embodiment, the device described in Embodiment 1 is used to generate large-volume uniform discharge under atmospheric pressure. The specific operation steps are as follows:

[0046] First follow figure 1 Set up and connect the components as shown, then adjust the distance between the discharge end of the dielectric tube 2 and the plate surface of the flat electrode 3 to be 16 mm, and finally turn on the switch of the AC power source 4 to adjust the output peak voltage of the AC power source 4 to 22 kV, and at the same time Adjust the output frequency of the AC power supply 4 to 500 Hz. In the atmospheric environment, a large-volume uniform discharge phenomenon will occur between the discharge end of the dielectric tube 2 and the plate surface of the plate electrode 3 . The generated discharge was photographed by a camera, such as figure 2 As shown, the dischar...

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Abstract

The invention provides a device and a method for producing large-volume homogenous atmospheric-pressure discharge. The device provided by the invention comprises a discharging mechanism and a power supply circuit, wherein the discharging mechanism comprises a dielectric medium pipe and a plate electrode; conducting solution is injected into the dielectric medium pipe, the conducting solution is electrically connected with the high voltage output terminal of the power supply circuit, and the plate electrode is connected with a ground wire. The device provided by the invention can produce large-volume homogenous atmospheric-pressure discharge in an air environment and is independent of a vacuum device, so that production cost can be reduced; meanwhile, the device can realize larger-volume gas gap discharge, and application range is greatly expanded; besides, the device can realize large-volume homogenous atmospheric-pressure discharge by using an alternating current power supply, without adopting an expensive nanosecond pulse power supply. The device provided by the invention is simple in structure, convenient to operate, low in cost, applicable to batch production and beneficial to popularization and industrial application.

Description

technical field [0001] The invention relates to a low-temperature gas discharge method, in particular to a device and method for generating uniform discharge with large volume and atmospheric pressure. Background technique [0002] The low-temperature plasma generated by atmospheric pressure gas discharge has a wide range of application prospects, such as film growth, surface modification, plasma display in industry, waste gas treatment and sewage treatment in environmental protection, and wound healing and sterilization in medical treatment. Dielectric barrier discharge under atmospheric pressure produces large-area uniform discharge, but it is easy to transition to uneven filamentary discharge. Its inhomogeneity and concentrated energy density limit its application in many industries that require large-scale processing. [0003] In recent years, how to obtain large-area uniform plasma at atmospheric pressure has become a difficult technology in the research of low-temperat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05H1/24
CPCH05H1/2406H05H1/2443
Inventor 李雪辰王彪贾鹏英楚婧娣
Owner HEBEI UNIVERSITY
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