Fiber discharge electrode and preparation method thereof

Abstract

The invention discloses a fiber discharge electrode and a preparation method thereof The fiber discharge electrode comprises a conductive column; a fixed metal wire which is wound on the conductive column and forms a plurality of windings along the radial direction of the conductive column; and a conductive fiber bundle which comprises a fixed section and an extension section. The fixed section is fastened between the conductive column and the fixed metal wire through the winding force of the fixed metal wire on the conductive column, and the extension section extends out of the fixed metal wire through a gap between adjacent windings. Through the arrangement of the structure, more discharge points can be provided, so that the discharge efficiency is higher, and when only plasma with a fixed concentration requirement needs to be provided, the discharge voltage can be reduced, and low-concentration ozone discharge is realized; and meanwhile, high-hardness and high-brittleness fibers can be prevented from being broken in the preparation process, so that the quality stability of an electrode product is effectively guaranteed.

Description

technical field

[0001] The invention relates to the field of discharge technology, in particular to a fiber discharge electrode and a preparation method thereof. Background technique

[0002] For air purifier electrodes, needle-shaped or wire-shaped electrodes are generally used. Since the electrode material is easily oxidized due to high-voltage discharge during operation, corrosion-resistant metal materials such as tungsten or special alloys are often used. Due to processing accuracy, oxidation, strength and other reasons, the tip of the needle electrode and the wire diameter of the wire electrode cannot be infinitely reduced. It is generally believed that the radius of the needle tip of the needle electrode is between 0.5-200 μm. In the field of general air purifiers, the radius is mostly about 10-100 μm. It is difficult to ensure that the strength and oxidation resistance of the material can meet the requirements of the product. design requirements.

[0003] In order t...

Examples

Embodiment 1

[0052] A fiber discharge electrode, such as figure 1 As shown, it includes: a conductive column 1, a fixed metal wire 2, and a conductive fiber bundle 3; wherein, the fixed metal wire 2 is wound on the conductive column 1 and forms several coils along the radial direction of the conductive column 1; the conductive fiber bundle 3 includes The fixed section and the extension section, the fixed section is fastened between the conductive column 1 and the fixed metal wire 2 by the winding force of the fixed metal wire 2 on the conductive column 1, and the extended section extends out of the fixed metal through the gap between adjacent coils. Silk 2.

[0053] The above-mentioned fiber discharge electrode provided by the present invention uses fiber bundles instead of needle-shaped electrodes, which can have more discharge points and thus have higher discharge efficiency. When only plasma with a fixed concentration needs to be provided, the discharge voltage can be increased. Reduce...

Embodiment 2

[0063] A preparation method of a fiber discharge electrode, specifically comprising:

[0064] Obtain a copper conductive column 1, a copper fixed wire 2, a conductive fiber bundle composed of polyacrylonitrile carbon fiber 3, an insulating sleeve 4, a conductive glue 6, and a resin for sealing;

[0065] One end of the conductive fiber bundle 3 is spirally wound on the conductive column 1, and at the same time, a fixed metal wire 2 is also spirally wound on the conductive column 1 wound with the conductive fiber bundle 3 at the same end, so that the conductive fiber bundle 3 is tightly fixed on the conductive column 1. On the conductive column 1; when the conductive fiber bundle 3 moves to the position that needs to be extended during the winding process, extend the free end of the conductive fiber bundle 3 out of the fixed wire 2, and then bypass the extended conductive fiber bundle 3 to continue fixing Metal wire 2 is spirally wound, and after at least one turn, the conductiv...

Embodiment 3

[0069] This embodiment further provides an optimization scheme for the preparation method of a fiber discharge electrode, that is, before the conductive fiber bundle 3 is wound around the conductive column 1, the pretreatment of the conductive fiber bundle 3 is also carried out, as follows:

[0070] 1) Ethanol + ultrasonic cleaning, drying, suitable for laboratory level applications;

[0071] 2) In a muffle furnace, calcined at 800°C for 0.5-1h, and removed by high-temperature carbonization, suitable for small batch trial production;

[0072] 3) Under the protection of nitrogen, the high current is energized, and the current is controlled so that the carbon fiber becomes red (about 800-1000 ° C) visible to the naked eye. Keep it for 10 minutes and then cool it under nitrogen protection, which is suitable for mass continuous production.

technical field

[0001] The invention relates to the field of discharge technology, in particular to a fiber discharge electrode and a preparation method thereof. Background technique

[0002] For air purifier electrodes, needle-shaped or wire-shaped electrodes are generally used. Since the electrode material is easily oxidized due to high-voltage discharge during operation, corrosion-resistant metal materials such as tungsten or special alloys are often used. Due to processing accuracy, oxidation, strength and other reasons, the tip of the needle electrode and the wire diameter of the wire electrode cannot be infinitely reduced. It is generally believed that the radius of the needle tip of the needle electrode is between 0.5-200 μm. In the field of general air purifiers, the radius is mostly about 10-100 μm. It is difficult to ensure that the strength and oxidation resistance of the material can meet the requirements of the product. design requirements.

[0003] In order t...

Examples

Embodiment 1

[0052] A fiber discharge electrode, such as figure 1 As shown, it includes: a conductive column 1, a fixed metal wire 2, and a conductive fiber bundle 3; wherein, the fixed metal wire 2 is wound on the conductive column 1 and forms several coils along the radial direction of the conductive column 1; the conductive fiber bundle 3 includes The fixed section and the extension section, the fixed section is fastened between the conductive column 1 and the fixed metal wire 2 by the winding force of the fixed metal wire 2 on the conductive column 1, and the extended section extends out of the fixed metal through the gap between adjacent coils. Silk 2.

[0053] The above-mentioned fiber discharge electrode provided by the present invention uses fiber bundles instead of needle-shaped electrodes, which can have more discharge points and thus have higher discharge efficiency. When only plasma with a fixed concentration needs to be provided, the discharge voltage can be increased. Reduce...

Embodiment 2

[0063] A preparation method of a fiber discharge electrode, specifically comprising:

[0064] Obtain a copper conductive column 1, a copper fixed wire 2, a conductive fiber bundle composed of polyacrylonitrile carbon fiber 3, an insulating sleeve 4, a conductive glue 6, and a resin for sealing;

[0065] One end of the conductive fiber bundle 3 is spirally wound on the conductive column 1, and at the same time, a fixed metal wire 2 is also spirally wound on the conductive column 1 wound with the conductive fiber bundle 3 at the same end, so that the conductive fiber bundle 3 is tightly fixed on the conductive column 1. On the conductive column 1; when the conductive fiber bundle 3 moves to the position that needs to be extended during the winding process, extend the free end of the conductive fiber bundle 3 out of the fixed wire 2, and then bypass the extended conductive fiber bundle 3 to continue fixing Metal wire 2 is spirally wound, and after at least one turn, the conductiv...

Embodiment 3

[0069] This embodiment further provides an optimization scheme for the preparation method of a fiber discharge electrode, that is, before the conductive fiber bundle 3 is wound around the conductive column 1, the pretreatment of the conductive fiber bundle 3 is also carried out, as follows:

[0070] 1) Ethanol + ultrasonic cleaning, drying, suitable for laboratory level applications;

[0071] 2) In a muffle furnace, calcined at 800°C for 0.5-1h, and removed by high-temperature carbonization, suitable for small batch trial production;

[0072] 3) Under the protection of nitrogen, the high current is energized, and the current is controlled so that the carbon fiber becomes red (about 800-1000 ° C) visible to the naked eye. Keep it for 10 minutes and then cool it under nitrogen protection, which is suitable for mass continuous production.

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