CN108539581A - A kind of Metal Substrate graphene film cathode gas spark switch - Google Patents
A kind of Metal Substrate graphene film cathode gas spark switch Download PDFInfo
- Publication number
- CN108539581A CN108539581A CN201810503670.3A CN201810503670A CN108539581A CN 108539581 A CN108539581 A CN 108539581A CN 201810503670 A CN201810503670 A CN 201810503670A CN 108539581 A CN108539581 A CN 108539581A
- Authority
- CN
- China
- Prior art keywords
- switch
- cathode
- graphene film
- metal substrate
- support plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T2/00—Spark gaps comprising auxiliary triggering means
- H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T1/00—Details of spark gaps
- H01T1/20—Means for starting arc or facilitating ignition of spark gap
- H01T1/22—Means for starting arc or facilitating ignition of spark gap by the shape or the composition of the electrodes
Landscapes
- Contacts (AREA)
- Plasma Technology (AREA)
Abstract
A kind of Metal Substrate graphene film cathode gas spark switch of the present invention, belongs to technical field of pulse power.Switch includes four Metal Substrate graphene film cathode, insulating gas, metal anode, switch cavity parts.Switch generally axial symmery shape, Metal Substrate graphene film cathode are to grow graphene film by chemical vapour deposition technique in metal cathode surface to constitute.Metallic cathode and metal anode are Bruce shape, the clearance distance of Metal Substrate graphene film cathode and anode can be adjusted, insulating gas type and pressure can change, it connect with pulse power device on the left of switch-mode metal base graphene lamel cathode, is connect with pulse power device on the right side of switch-mode metal anode.The present invention is applied in pulse power device, gas spark switch operating voltage be hundred KV levels, solve the problems, such as gas spark switch breakdown voltage large dispersion, take into account construction of switch it is simple while, the reliability for improving switch ensure that the stable operation of pulse power device.
Description
Technical field
The invention belongs to technical field of pulse power, are related to a kind of Metal Substrate graphene film cathode gas spark switch.
Background technology
In technical field of pulse power, switching technique has special consequence.It not only determines that pulse power fills
The output characteristics set, the even key of pulse power system success or failure.Wherein, gas switch has high pressure, through-flow big, structure
Simple feature, is widely used；But the stability of this switch work is poor, and repetition rate is relatively low, it is difficult to meet Gao Zhongying, height
The requirement of steady operation occasion.The achievement in research of forefathers summarizes gas switch electrode material, field distribution, surface topography, gas
The factors such as body state, voltage type achieve breakthrough to the affecting laws of breakdown characteristics to the understanding of gas switch working mechanism
Property progress.
In terms of electrode material, Luo Weixi et al. researchs think graphite as high-current switch electrode, from static self breakdown
Voltage stability and insulator service life are significantly better than metal (stainless steel, tungsten-copper alloy, copper alloy) electrode；Graphite electrode is slightly
Under non-uniform field, switch room is away from 5mm, and when dry air pressure 0.25MPa, average self-breakdown voltage is 43.6kV, relative standard
Deviation is 1.28%.Literature survey finds that the gas switch research about nano material electrode is very few.And carbon nanomaterial is true
In empty electron emission application, there is apparent launch stability advantage.The carbon nanotube that the nineties finds is in Flied emission field table
Reveal great application value, autoelectronic current is thousand times or more of conventional field emission material (such as diamond), single
CNT emissioies have reached 107A/cm2.2004 find star's material graphene, because its super excellent optics,
Electricity, mechanical and thermal characteristics, while there is high draw ratio and more emission edges, should theoretically there be better field
Emitting performance.And grapheme material is applied to the research in high current electron emitting cathode and gas switch and is had not been reported.
Invention content
The purpose of the present invention is：To solve the problems, such as high pressure gas spark switch breakdown voltage large dispersion, it is proposed that one
Kind Metal Substrate graphene film cathode gas spark switch.
The technical solution of the present invention is to provide a kind of Metal Substrate graphene film cathode gas spark switch, including switch cavity
Body, the insulating gas for being filled in switch inside cavity and the switch cathode positioned at switch inside cavity and switch anode；
It is characterized in that：
Above-mentioned switch cathode is the sections Bruce electrode (Bruce electrode) with switch anode, is separately fixed at switch cavity
On opposite two walls of body；
Above-mentioned switch cathode is Metal Substrate cathode, and surface deposits n-layer graphene film, wherein n >=1, especially by change
It learns vapour deposition process and grows graphene film.
Graphene film is a kind of hexagonal cell shape two-dimensional structure being made of carbon atom, it is preferable that per layer graphene
The thickness of film is less than 1nm, 1≤n≤5, and per layer graphene film covering Metal Substrate cathode surface coverage rate up to 50% with
On.
Preferably, above-mentioned switch cavity includes outer barrel and is arranged the insulated left side support plate in two open end of outer barrel and right side
Insulation support plate；Cathode and insulated left side support plate coaxial cooperation are switched, outside is fixed by left electrodes fixed ring；Switch sun
Pole and side insulation right support plate coaxial cooperation, outside are fixed by right electrodes fixed ring, and the thickness of outer barrel is selected by switch
The pressure size of insulating gas determines.
Preferably, insulated left side support plate and side insulation right center position of support plate are provided with and switch cathode and switch anode
The matched through-hole of pedestal；Switch cathode and the pedestal for switching anode are each passed through through-hole and are fixed on insulated left side support plate and right side
On insulation support plate.
Preferably, between outer barrel and insulated left side support plate and side insulation right support plate, insulated left side support plate and right side
It is equipped with insulated enclosure circle between insulation support plate and switch cathode, switch anode, it is exhausted that insulated enclosure circle will switch inside cavities
Edge gas is isolated from the outside.
Preferably, it is circular o shape sealing rings that insulated enclosure circle, which is cross section, and annulus and circular cross sectional dimensions are by close
Seal structure and form determine.
Preferably, switch anode can be adjusted with the clearance distance for switching cathode by two lateral electrode fixed rings, switch sun
Maximum clearance distance between pole and switch cathode is no more than the 1/3 of switch cathode or switch anode outer diameter；It switchs on the left of cathode
It connect with pulse power device, is connect with pulse power device on the right side of switch anode.
The present invention operation principle be：After pulse power device charges to certain voltage to switch, Metal Substrate graphene is thin
Quasi- uniform electric field is built between film cathode and metal anode, graphene film is under certain forceful electric power field action, due to multidimensional
Tip field emission structure and edge flashing mechanism collective effect, cathode surface formed plasmasphere, carried by metallic cathode
Stable electron source is formed for high density electronics, with insulating gas ionization by collision, electron avalanche is formed and extremely fast develops on the sunny side,
Insulating gas punctures completely between eventually leading to entire switch anode and cathode, and the switch course of work terminates.
The beneficial effects of the invention are as follows：
The present invention is based on the electric properties that graphene is excellent, it is proposed that a kind of Metal Substrate graphene film cathode gas spark
Switch is applied in pulse power device, and gas spark switch operating voltage is hundred KV levels, solves gas spark switch and hits
Wear the big problem of distribution of voltage, take into account construction of switch it is simple while, improve the reliability of switch, ensure that pulse power
The stable operation of device.
Description of the drawings
Fig. 1 is a kind of Metal Substrate graphene film cathode gas spark switch diagrammatic cross-section proposed by the present invention；
Fig. 2 is Metal Substrate graphene film cathode surface schematic diagram.
Reference numeral is in figure：1- graphene films, 2- stainless steel anodes, 3- high pure nitrogens, 4- copper-base graphite alkene films
Cathode, 6- organic glass support plates, 7- outer barrels, 8- nuts, 9- sealing rings, 10- switch cavity.
Specific implementation mode
A kind of Metal Substrate graphene film cathode gas spark of the present invention is done in detail with reference to the accompanying drawings and examples
Description.
A kind of Metal Substrate graphene film cathode gas spark in the present embodiment, including copper-base graphite alkene lamel cathode 4,
High pure nitrogen 3, stainless steel anode 2,10 4 parts of switch cavity, generally axial symmery shape.
Refering to fig. 1, Fig. 2, copper-base graphite alkene lamel cathode 4 are grown by chemical vapour deposition technique in red copper cathode surface
Number layer graphene film 1 is constituted, and the thickness of graphene film 1 is less than 1nm, and the number of plies is between 1-5 layers, and covering per layer film
Lid rate is up to 50% or more.Copper-base graphite alkene lamel cathode 4 and stainless steel anode 2 are Bruce shape, and overall diameter is 25mm,
Thickness of electrode is 8mm, and the straight mouth diameter of electrode tip holder is 10mm, and electrode tip holder screw thread is M8；Copper-base graphite alkene lamel cathode 4 and a left side
6 coaxial cooperation of side organic glass support plate, outside are connected by left side stainless steel nut 8；Stainless steel anode 2 and the organic glass in right side
6 coaxial cooperation of glass support plate, outside are connected by right side stainless steel nut 8；Stainless steel outer barrel 7 and left and right organic glass support plate
6 coaxial cooperations, silicone rubber O-ring 9 are isolated from the outside 10 inside high pressure nitrogen 3 of cavity is switched.
Left and right sides insulation support plate 6 is disc-shape, and thickness 3mm, center is reserved thin with copper-base graphite alkene
The through-hole identical with 2 pedestal of stainless steel anode of film cathode 4, diameter 10mm；Outside 6 outside diameter of organic glass support plate and stainless steel
7 inner surface diameters of cylinder are identical, are 140mm.2 maximum pressure of nitrogen is 0.8MPa, and the thickness of stainless steel outer barrel 7 is 5mm.
The clearance distance of copper-base graphite alkene lamel cathode 4 and stainless steel anode 2 can be adjusted by both sides stainless steel nut 8
Section, maximum clearance distance should be no more than 8mm.
Silicone rubber O-ring 9 be circular ring structure, cross section be circle, annulus overall diameter be 140mm, interior diameter 130mm,
Cross-sectional diameter is 10mm.
Under the conditions of identical switch form, on-load voltage, 0.8MPa high pure nitrogens, when cathode is red copper cathode, open
Pass breakdown voltage average value is 100kV, and the relative standard deviation of voltage magnitude is 5%；And when cathode is copper-base graphite alkene film
When cathode, switch breakdown voltage average value is 80kV, and the relative standard deviation of voltage magnitude is only 1%, and dispersibility is obviously reduced,
The breakdown stability and functional reliability for improving high pressure gas spark switch, ensure that the stable operation of pulse power device.
Claims (7)
1. a kind of Metal Substrate graphene film cathode gas spark switch, including switch cavity, be filled in switch inside cavity
Insulating gas and the switch cathode positioned at switch inside cavity and switch anode；
It is characterized in that：
The switch cathode is the sections Bruce electrode with switch anode, is separately fixed on opposite two walls of switch cavity；
The switch cathode is Metal Substrate cathode, and surface deposits n-layer graphene film, wherein n >=1.
2. Metal Substrate graphene film cathode gas spark switch according to claim 1, it is characterised in that：Every layer of graphite
The thickness of alkene film is less than 1nm, 1≤n≤5, and the coverage rate of every layer graphene film covering Metal Substrate cathode surface up to 50%
More than.
3. Metal Substrate graphene film cathode gas spark switch according to claim 1, it is characterised in that：The switch
Cavity includes outer barrel and is arranged insulated left side support plate and side insulation right support plate in two open end of outer barrel；Switch cathode and a left side
Side insulation support plate coaxial cooperation, outside are fixed by left electrodes fixed ring；It switchs anode and side insulation right support plate is coaxial
Cooperation, outside is fixed by right electrodes fixed ring.
4. Metal Substrate graphene film cathode gas spark switch according to claim 3, it is characterised in that：Insulated left side
Support plate and side insulation right center position of support plate are provided with and switch cathode and the switch matched through-hole of anode pedestal；Switch cathode
Through-hole is each passed through with the pedestal of switch anode to be fixed in insulated left side support plate and side insulation right support plate.
5. Metal Substrate graphene film cathode gas spark switch according to claim 4, it is characterised in that：Outer barrel and a left side
Between side insulation support plate and side insulation right support plate, insulated left side support plate and side insulation right support plate and switch cathode, open
It is equipped with insulated enclosure circle between the anode of pass.
6. Metal Substrate graphene film cathode gas spark switch according to claim 5, it is characterised in that：Insulated enclosure
Circle is that cross section is circular o shape sealing rings.
7. Metal Substrate graphene film cathode gas spark switch according to claim 6, it is characterised in that：Switch anode
Maximum clearance distance between switch cathode is no more than the 1/3 of switch cathode or switch anode outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503670.3A CN108539581B (en) | 2018-05-23 | 2018-05-23 | Metal-based graphene film cathode gas spark switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810503670.3A CN108539581B (en) | 2018-05-23 | 2018-05-23 | Metal-based graphene film cathode gas spark switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108539581A true CN108539581A (en) | 2018-09-14 |
| CN108539581B CN108539581B (en) | 2020-06-26 |
Family
ID=63471796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810503670.3A Active CN108539581B (en) | 2018-05-23 | 2018-05-23 | Metal-based graphene film cathode gas spark switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108539581B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600999A (en) * | 2019-09-24 | 2019-12-20 | 中国工程物理研究院流体物理研究所 | Novel high-voltage large-current rotary arc switch |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777730A (en) * | 2010-04-09 | 2010-07-14 | 华中科技大学 | Designing method of graphite electrode of high energy pulse gas switch |
| CN102163805A (en) * | 2010-12-23 | 2011-08-24 | 中国人民解放军理工大学 | Remote high-voltage pulse nanosecond switch applying insulating oil |
| CN103095268A (en) * | 2013-01-18 | 2013-05-08 | 大连理工大学 | Large current high voltage trigger switch with controllable air intake |
| CN103553029A (en) * | 2013-10-31 | 2014-02-05 | 中国科学院上海微系统与信息技术研究所 | Method for preparing vertical graphene-based thermal material |
| CN103779292A (en) * | 2013-12-31 | 2014-05-07 | 中国科学院上海微系统与信息技术研究所 | Method for preparing graphene-based chip heat-radiating material |
| CN104616945A (en) * | 2015-02-09 | 2015-05-13 | 东南大学 | Field-emission code cathode |
| CN105220214A (en) * | 2015-11-13 | 2016-01-06 | 中国科学院上海高等研究院 | A kind of preparation method of graphene film |
| CN105470078A (en) * | 2015-12-29 | 2016-04-06 | 无锡吉仓纳米材料科技有限公司 | Focused tripolar structured fully-packaged X-ray bulb tube based on carbon nanotube cold cathode |
| CN106128906A (en) * | 2016-08-29 | 2016-11-16 | 重庆启越涌阳微电子科技发展有限公司 | Vertical type graphene film field-transmitting cathode and preparation method thereof, electrode |
| CN106405359A (en) * | 2016-11-17 | 2017-02-15 | 西北核技术研究所 | Insulating oil test oil cup for 100 kV pulse voltage |
| CN107311467A (en) * | 2017-05-27 | 2017-11-03 | 北京大学 | A kind of preparation method, Graphene glass and the photo-thermal conversion device of the photo-thermal conversion device based on Graphene glass |
-
2018
- 2018-05-23 CN CN201810503670.3A patent/CN108539581B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101777730A (en) * | 2010-04-09 | 2010-07-14 | 华中科技大学 | Designing method of graphite electrode of high energy pulse gas switch |
| CN102163805A (en) * | 2010-12-23 | 2011-08-24 | 中国人民解放军理工大学 | Remote high-voltage pulse nanosecond switch applying insulating oil |
| CN103095268A (en) * | 2013-01-18 | 2013-05-08 | 大连理工大学 | Large current high voltage trigger switch with controllable air intake |
| CN103553029A (en) * | 2013-10-31 | 2014-02-05 | 中国科学院上海微系统与信息技术研究所 | Method for preparing vertical graphene-based thermal material |
| CN103779292A (en) * | 2013-12-31 | 2014-05-07 | 中国科学院上海微系统与信息技术研究所 | Method for preparing graphene-based chip heat-radiating material |
| CN104616945A (en) * | 2015-02-09 | 2015-05-13 | 东南大学 | Field-emission code cathode |
| CN105220214A (en) * | 2015-11-13 | 2016-01-06 | 中国科学院上海高等研究院 | A kind of preparation method of graphene film |
| CN105470078A (en) * | 2015-12-29 | 2016-04-06 | 无锡吉仓纳米材料科技有限公司 | Focused tripolar structured fully-packaged X-ray bulb tube based on carbon nanotube cold cathode |
| CN106128906A (en) * | 2016-08-29 | 2016-11-16 | 重庆启越涌阳微电子科技发展有限公司 | Vertical type graphene film field-transmitting cathode and preparation method thereof, electrode |
| CN106405359A (en) * | 2016-11-17 | 2017-02-15 | 西北核技术研究所 | Insulating oil test oil cup for 100 kV pulse voltage |
| CN107311467A (en) * | 2017-05-27 | 2017-11-03 | 北京大学 | A kind of preparation method, Graphene glass and the photo-thermal conversion device of the photo-thermal conversion device based on Graphene glass |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110600999A (en) * | 2019-09-24 | 2019-12-20 | 中国工程物理研究院流体物理研究所 | Novel high-voltage large-current rotary arc switch |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108539581B (en) | 2020-06-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108767660A (en) | A kind of micro groove structure cathode gas spark switch | |
| KR100530765B1 (en) | Nanoporous dielectrics for plasma generator | |
| US20040256975A1 (en) | Electrode and associated devices and methods | |
| CN102595757A (en) | Three-electrode discharge device for generating large-volume atmosphere pressure plasma | |
| CN112582884B (en) | Gas switch structure based on low-working-coefficient low-jitter triggering | |
| Banerjee et al. | Low-threshold field emission from transparent p-type conducting CuAlO2 thin film prepared by dc sputtering | |
| CN102148121B (en) | X-ray generation device and cathode thereof | |
| JP2012104283A (en) | Electric field radiation device | |
| CN108598868B (en) | Electrode structure for gas spark switch and design method | |
| CN110600999B (en) | Novel high-voltage large-current rotary arc switch | |
| CN108539581A (en) | A kind of Metal Substrate graphene film cathode gas spark switch | |
| CN107681466A (en) | A kind of small―gap suture gas switch for high-voltage pulse generator | |
| CN103400739A (en) | Pointed cone array cold cathode X light tube with large-emitting-area field emission composite materials | |
| CN106998617A (en) | The device and method of large scale Atomospheric pressure glow discharge is produced based on microplasma spray gun | |
| CN105071225B (en) | Spark-gap switch with adjustable gas tightness gap | |
| CN101834108B (en) | X-ray tube for emission in carbon nanometer cathode field | |
| CN100395180C (en) | Carbon nanotube preparation method and its apparatus | |
| CN204497190U (en) | A kind of cold cathode structure Kaufman ion source device | |
| CN104412470A (en) | Spark gap with a capacitive energy accumulator | |
| RU2220905C2 (en) | Device for production of carbon nanopipes using a method of arc-discharge | |
| JP2019071260A (en) | Electron source, electron beam irradiation apparatus, and manufacturing method of electron source | |
| CN103560773A (en) | Bipolar trigger type multi-rod-electrode vacuum trigger switch | |
| CN210866108U (en) | High-current repetition frequency strontium titanate-carbon nanotube medium cathode | |
| CN103021768A (en) | High-voltage and high-current discharge switching tube | |
| CN215403106U (en) | Vacuum reactor for preparing graphene by electrifying carbon powder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |