CN109429419A

CN109429419A - A kind of novel medium barrier plasma generating device

Info

Publication number: CN109429419A
Application number: CN201710747289.7A
Authority: CN
Inventors: 周钧
Original assignee: Zhou Qiqi
Current assignee: Zhou Qiqi
Priority date: 2017-08-19
Filing date: 2017-08-19
Publication date: 2019-03-05

Abstract

The present invention provides a kind of novel medium barrier plasma generating devices, mould group is occurred by plasma, the three parts composition such as power module and protection circuit, using ceramics or glass as block media, the slab construction of hollow plate containing multiple aligned apertures can be used as gas passage, it is pasted with metal foil in the plane of plate or brushes conductive coating as electrode, muti-piece plate is pasted together in order just constitutes plasma generation mould group, after the high-voltage electricity or high-frequency current that power module generates access electrode by protection circuit, plasma will be eliminated in the aligned apertures in plate, when gas stream of pollution flows through gas passage, it will be purified by plasma.When protection circuit can prevent single flat plate from damaging, there is the case where overcurrent is burnt.

Description

A kind of novel medium barrier plasma generating device

Technical field

The present invention relates to the technical fields that medium barrier plasma occurs, after gas-liquid-solid three-state, plasma It is known as the 4th state of substance, plasma has the electronics and charged particle of high activity, has very strong chemical reaction Property.Plasma can mainly be generated by the methods of high voltagehigh frequency electric field, light, high temperature and high-energy ray.High voltagehigh frequency electricity Field action is on medium, and low temperature plasma can be generated under atmospheric pressure by forming dielectric barrier discharge, these low-temperature plasmas Body can be used to volatile organic compounds, vehicle exhaust and killing bacterium in purification air.

Background technique

In recent years, with the quickening of China's process of industrialization, the pollution conditions such as bring air, water body are increasingly tight therewith Weight, plasma due to can produce ion live-wire particle and electronics with high activity, can efficiently with air, water body In pollutant react, eliminate pollution, therefore, plasma-generating technologies are more and more widely paid attention to.

Dielectric barrier discharge (referred to as DBD) is usually operated under atmospheric pressure, be it is a kind of be convenient for people to use it is equal from Daughter occurring mode, at least one electrode by dielectric overlay, this medium is referred to as block media in bipolar electrode, stops to be situated between Gas between matter and another electrode ionizes under high voltage electric field effect, forms low temperature plasma, a large amount of generationizations Active particle required for reacting is learned, the physical processes such as special light, heat, sound, electricity and chemical process, therefore medium are also accompanied by Barrier discharge has very big application potential in field of environment engineering and disinfection and sterilization field, causes extensive attention.

Existing its electrode of medium barrier plasma generating device is mostly " line-tubular type " and " needle-is board-like "." line-pipe Formula " mostly uses quartz glass tube or ceramic tube as block media, is equipped with electrode bar in tube center, is enclosed with electricity in pipe outer wall Pole after adding high frequency, high-voltage electricity to two electrodes, a large amount of filament shape micro discharges will occur in tube wall, the air in pipe is electric From formation plasma." needle-is board-like " mostly uses metal needle and metal plate as electrode, be covered on a metal plate glass or Ceramics are used as block media, and after adding high frequency, high-voltage electricity to two electrodes, interelectrode air is ionized, and form plasma. " line-tubular type " is used for purification gas more, and " needle-is board-like " is chiefly used in handling solid and kills bacterial virus." line-tubular type " exists It is fixed difficult, height, and the contact area ratio of gas and tube wall action of plasma region are required to central electrode installation accuracy Smaller, purification efficiency is relatively low.Plasma generation is very high to pipe evenness of wall thickness, integrity demands, once there is thin and thick It is uneven or cracked, short circuit will occur in fault location, form arc discharge, gently can not then generate plasma, it is heavy then burn Destroying device.

Summary of the invention

The invention solves existing dielectric barrier discharge plasma generating devices, provide one kind Novel medium barrier discharge plasma generating device, present invention reduces the requirement to electrode installation accuracy, gas flow is set Count relatively easy, gas and the contact area in action of plasma region are bigger, prevent short circuit using protection circuit And arc discharge, modular structure reduce the complexity of gas flow, improve the applicable model of plasma producing apparatus It encloses.

To achieve the above object, the invention adopts the following technical scheme.The electrode of the present apparatus uses " board-to-board formula " electrode Structure, two electrodes are tabular, and block media is using glass (containing quartz glass) or ceramic material, and glass is (containing quartzy glass Glass) or ceramic material by squeeze or moulding by casting, become the plate 2 of hollow plate structure, have marshalling in plate 2 Through-hole, as gas passage 3, the shape of these through-holes can be rectangular, round, triangle or polygon, 2 upper and lower surface of plate For smooth plane, it can be used for pasting sheet metal foil or the coating conductive coatings such as metal-containing powders or graphite form conductive strips 1, These conductive strips 1 can be used as electrode.Conductive strips 1 are pasted or be coated with to every piece of plate 2 at least as electrode in a plane, One face electrode of every piece of plate 2 connects the high-voltage end of power module 6, and the another side electrode of every piece of plate connects the low pressure of power module 6 End, one piece of plate 2 containing conductive strips 1 (electrode) can become plasma and module 101 occur, and multiple plasmas occur Module 101 is arranged successively superposition, so that it may constitute plasma and mould group 102 occurs, connecing between module 101 occurs for plasma Seam is closed using sealed insulation glue 4, and the conductive strips 1 for preventing plasma from occurring in module 101 are oxidized destruction, and can To prevent high-voltage electricity from leaking electricity.

Plasma producing apparatus includes that mould group 102, protection circuit 7 and power module 6 etc., ion occur for plasma Body occur module 101 conductive strips 1 according to spacing order by protect circuit 7 be connected respectively to power module 6 high-voltage end and Low-pressure end.Protection circuit 7 is to be equipped with overcurrent protector 5 in circuit, and overcurrent protector 5 is by thermistor or bimetal leaf system At, when some plasma occur module 101 there is discharge breakdown when, pass through this plasma occur module 101 electric current It will sharply become larger, can also be become larger therewith by the electric current of its circuit branch accordingly, to cause thermistor or bimetallic The fever of piece protector, and automatically cuts off the power supply of this module, it is this can be designed so that individual module breaks down after, not shadow Other modules are rung to work on.Due to the dielectric-slab using the hollow plate structure for including aligned apertures, sent out in plasma Gas passage 3 is formed in raw mould group 102, gas processed is can be convenient and flows through, after the energization of mould group 102 occurs for plasma, i.e., Dielectric barrier discharge phenomenon can be formed on plate 2, a large amount of high activity particle is generated in the gas flowed through, thus realization pair The purification of gas or other reactions.

Detailed description of the invention

Fig. 1 is that module map occurs for plasma.

Fig. 2 is that mould group picture occurs for plasma.

Fig. 3 is plasma producing apparatus figure.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, right below in conjunction with drawings and examples The present invention is further elaborated.It should be appreciated that specific embodiment described herein is used only for explaining the present invention, not For limiting the present invention.

Specific embodiment 1 illustrates the present embodiment in conjunction with Fig. 1, Fig. 2 and Fig. 3, and block media uses ceramic material, pottery Ceramic material becomes the plate 2 of hollow plate structure, there is the perforation square hole of marshalling in plate 2 by extrusion forming, as Gas passage 3,2 upper and lower surface of plate are smooth plane, paste stainless steel metal piece and form conductive strips 1, these conductive strips 1 are It can be used as electrode, the plate for being attached to electrode just constitutes plasma and module 101 occurs, and module occurs for multiple plasmas 101 are sequentially overlapped, so that it may constitute plasma and mould group 102 occurs, the seam between plasma generation module 101 uses close Envelope insulating cement 4 is closed, and the conductive strips 1 for preventing plasma from occurring in module 101 are oxidized destruction, and can prevent height Piezoelectricity electric leakage.

Plasma producing apparatus includes that mould group 102, protection circuit 7 and power supply 6 etc., gas ions hair occur for plasma The conductive strips 1 of raw module 101 are according to spacing order by protecting circuit 7 to be connected respectively to the high-voltage end and low-pressure end of power supply 6.It protects Protection circuit 7 is to be equipped with thermistor in circuit as overcurrent protector 5, is put when module 101 occurs for some plasma It when electrical breakdown, will sharply be become larger by the electric current that module 101 occurs for this plasma, circuit is protected by it accordingly Branch current can also become larger therewith, to cause thermistor fever, and automatically cut off the power supply of this module, this design can So that not influencing other modules after individual module breaks down and working on.

Claims

1. a kind of novel medium barrier plasma generating device, it is characterised in that: the device includes: mould group occurs for plasma 102, by protection circuit 7 and plasma mould group occurs for the three parts composition such as power module 6 and protection circuit 7, power module 6 102 are connected, and mould group 102 occurs for plasma under the action of the high pressure or high-frequency current that power module 6 issues, and generate plasma Body.

2. mould group 102 occurs for the plasma described in, it is characterised in that: mould group 102 occurs for plasma by several plasmas The superposition bonding composition of module 101 occurs for body, each plasma occur the seam between module 101 using sealed insulation glue 4 into Row closing prevents plasma from the conductive strips 1 in module 101 occur and is oxidized destruction and electric leakage, and module 101 occurs for plasma Conductive strips 1 according to spacing order by protecting circuit 7 to be connected respectively to the high-voltage end and low-pressure end of power module 6.

3. module 101 occurs for the plasma described in, it is characterised in that: uses ceramics, quartz glass or heat resistant glass as it Block media, structure are that the side of plate 2 or bilateral are provided with conduction with plate 2 of the aligned apertures as gas passage 3 After conductive strips 1 connect high pressure or high-frequency current, there is dielectric barrier discharge phenomenon in gas passage 3, forms plasma in band 1 Body can be such that the gas for flowing through gas passage is purified.

Conductive strips 1 described in 4., it is characterised in that: pasted using metal foil or conductive coating or brush plate upper face or After lower face, conductive strips 1 are just constituted.

Protection circuit 7 described in 5., it is characterised in that: be equipped with overcurrent protector 5 in circuit, overcurrent protector is thermistor Or bimetal leaf, when discharge breakdown occurs in some plasma generation module 101, flowing through electric current can be excessive, causes on its route Thermistor or bimetal leaf fever, the automatic power supply for reducing electric current or automatically cutting off this module.