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Portable device and method for generating and using atmospheric pressure cold plasma discharge in liquid environment

A cold plasma and portable device technology, applied in the field of plasma discharge, can solve the problems of potential safety hazards, exposed electrodes at the input end, etc., and achieve the effects of improving efficiency, avoiding attenuation, and simplifying the structure of the device

Inactive Publication Date: 2020-10-09
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] 3. The electrodes at the input end are exposed and there is no grounding end, so there are certain potential safety hazards;
[0008] 4. The main structure of the device is mainly applicable under the condition of connecting pipelines, and the scope of use has relatively large limitations

Method used

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  • Portable device and method for generating and using atmospheric pressure cold plasma discharge in liquid environment
  • Portable device and method for generating and using atmospheric pressure cold plasma discharge in liquid environment
  • Portable device and method for generating and using atmospheric pressure cold plasma discharge in liquid environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] like figure 1 As shown, the discharge structure of a portable ready-to-use device capable of performing gas discharge in liquid to generate plasma mainly includes a rod-shaped high-voltage electrode 100, a porous vent tube 200, a ground electrode 300 and a check valve 400, wherein the porous vent tube The structure of the trachea 200 is as figure 2 As shown, micropores 201 are evenly distributed on the tube wall of the porous ventilation tube 200 .

[0041] The rod-shaped high-voltage electrode 100 is fixed in the middle of the porous ventilation pipe 200, and there is a gap between the rod-shaped high-voltage electrode 100 and the inner wall of the porous ventilation pipe 200, and the size of the gap is about 1mm. The multi-hole ventilation tube is connected to the trachea through branches, the other end of the trachea is connected to the air pump, and a check valve 400 is installed in the middle of the trachea. The distance between the porous air pipe and the groun...

Embodiment 2

[0044] like image 3 As shown, based on Embodiment 1, in this embodiment, the power supply system, the boost circuit and the main body of the air pump are placed in a casing 500, and the rod-shaped high-voltage electrode, the porous ventilation tube and the grounding electrode are all fixed on the surface of the casing, and the porous ventilation tube The upper end of the gas pipe is closed at a fixed position, a part of the gas delivery pipe is located in the casing, and the other part is connected with the branch pipe of the porous ventilation pipe outside the casing. The boost circuit outputs a high-voltage terminal and a ground terminal, the rod-shaped high-voltage electrode is connected to the high-voltage output terminal of the boost circuit, and the ground electrode is connected to the ground terminal of the boost circuit.

[0045]When working, inject enough liquid into the liquid container, immerse the ground electrode and the porous vent tube of the device in the liqu...

Embodiment 3

[0047] Based on Embodiment 2, a DC input power supply method is specifically provided as the power supply system of the device, such as Figure 4 shown.

[0048] In the whole structure, the rechargeable storage battery is connected to the charging port to provide power input, and the switch is connected to the main road. The main trunk is composed of a booster circuit and an air pump connected in parallel, where an inverter circuit needs to be connected to the front end of the booster circuit, and the capacity of the DC battery pack is matched according to the total power required by the device.

[0049] Using the power supply system of this embodiment, when working, close the trunk switch, and the gas pump works to send gas into the gap between the rod-shaped high-voltage electrode 100 and the inner wall of the porous ventilation tube 200 . At the same time, the DC voltage input to the inverter circuit becomes a sinusoidal AC voltage output, and the sinusoidal AC voltage out...

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Abstract

The invention provides a portable device and method for generating and using atmospheric pressure cold plasma discharge in a liquid environment. The device comprises a rod-shaped high-voltage electrode, a porous ventilation pipe, a grounding electrode, a power supply system, a booster circuit, a gas pump, a gas delivery pipe and a check valve, wherein the rod-shaped high-voltage electrode is inserted into the porous ventilation pipe, a gap exists between the rod-shaped high-voltage electrode and the inner wall of the porous ventilation pipe, and the lower end of the porous ventilation pipe isclosed; the rod-shaped high-voltage electrode and the porous ventilation pipe are used as a set of assembly, are parallel to a grounding electrode and relatively fixed with the grounding electrode, and are arranged in a liquid environment during working; a plurality of micropores are formed in the pipe wall of the porous ventilation pipe; a branch pipe is further arranged at the upper part of theporous ventilation pipe and is connected into the gas pump through the gas conveying pipe; the check valve is installed on the section, which is close to the branch pipe, of the gas conveying pipe. The device is simple in structure, convenient to carry and operate, stable and reliable in work and capable of conducting plasma treatment on liquid anytime and anywhere and improving the plasma treatment effect.

Description

technical field [0001] The invention belongs to the atmospheric pressure cooling plasma discharge technology, in particular to a device and method capable of realizing gas discharge to generate plasma in a liquid environment. Background technique [0002] At present, atmospheric pressure-cooled plasma has been widely used in experiments in industry, agriculture, biomedical industries, and scientific research projects. One of the important contents is to use cold plasma to treat aqueous solution, or to treat the aqueous solution after cold plasma Served in an app or experiment. A large number of studies have found that the plasma-treated solution contains a large number of active particles, which can be widely used in agriculture, medicine, and people's daily life, such as stimulating plant growth, disinfecting, cleaning wounds, etc. [0003] For liquid treatment, a common device design idea is to generate a plume of plasma in the environment in the form of a jet under the a...

Claims

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Application Information

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IPC IPC(8): H05H1/46B01J19/08
CPCB01J19/08H05H1/46
Inventor 李乔松许德晖刘定新孔刚玉
Owner XI AN JIAOTONG UNIV