CN110225641A - Multiple level vacuum switch based on plasma jet triggering - Google Patents
Multiple level vacuum switch based on plasma jet triggering Download PDFInfo
- Publication number
- CN110225641A CN110225641A CN201810185241.6A CN201810185241A CN110225641A CN 110225641 A CN110225641 A CN 110225641A CN 201810185241 A CN201810185241 A CN 201810185241A CN 110225641 A CN110225641 A CN 110225641A
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- plasma
- voltage
- triggering
- gap
- multiple level
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Classifications
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- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/26—Plasma torches
- H05H1/32—Plasma torches using an arc
- H05H1/34—Details, e.g. electrodes, nozzles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
Abstract
The present invention relates to a kind of Multiple level vacuum switches based on plasma jet triggering, target, insulating supporting, annular pressure ceramic condenser, shielding case, insulating sleeve and the high-voltage pulse triggering and freewheeling circuit that electrode, an in-built electrical spark-discharge plasma including multiple center openings spray；The target of electrode and in-built electrical the spark-discharge plasma injection of multiple center openings constitutes multiple concatenated vacuum gaps；Leachy discharge ball gap is opened by upper and lower two plasma jet nozzles, built-in low boiling point solid material and center inside the target of in-built electrical spark-discharge plasma injection and plasma chamber forms.Plasma jet of the present invention generates more abundant plasma using freewheeling circuit, and promoted by low boiling point solid material gasification, plasma nozzle height is improved, the reliability of triggering system is improved, and connected by multiple vacuum gaps, improve the voltage class of switch.
Description
Technical field
The present invention relates to a kind of high voltage pulse power Multiple level vacuum switches, especially a kind of to be based on plasma jet
The Multiple level vacuum switch of triggering.
Background technique
Recently as the growth requirement of pulse power switch, gas trigger switch and Triggered Vacuum Switch are that two classes are common
Pulse power switch, gas trigger switch dielectric strength with higher, the dynamic dielectric recovery speed of Triggered Vacuum Switch
Fastly, there are saturation effect but under long gap, it can give full play to that vacuum short air gap is superior to go out using the series connection of multiple vacuum gaps
Arc performance is more suitable for the pulse power use occasion of high repetition frequency.Common triggering mode includes electric spark triggering, laser
Triggering, X-ray triggering etc., traditional electric spark trigger in long gap there are work system require it is high, generally greater than 50%,
Working range is narrow, and Multiple level gas trigger switch is using main gap triggering breakdown, the mode of other gap self breakdowns, triggering and conducting
Poor reliability, working range are narrow；In addition under high repetition frequency, the dynamic dielectric recovery speed of gas switch is slower, i.e., previous
It needs lasting longer time that could apply pulsed discharge next time after secondary electric discharge, is not suitable for high repetition frequency occasion.
Studied in terms of plasma jet switch at present, mainly for single gap switch, plasma jet
Be by arc discharge itself generate bulking effect push plasma jet, jetting height is limited, be not suitable for long gap under or
The triggering of person's Multiple level switch.
Summary of the invention
The present invention is using series connection Multiple level vacuum mode, and voltage class is higher, and dynamic dielectric recovery speed is fast, is applicable in Gao Chong
Complex frequency pulse power field, proposition increase plasma jet speed and height based on the propulsion of low boiling point solid material gasification
Degree.
The technical solution adopted by the present invention is that: the Multiple level vacuum switch based on plasma jet triggering, it includes more
The Multiple level vacuum system that a electrode and target are constituted；Annular pressure ceramic capacitor is quiet to the carry out of multiple vacuum gaps
Dynamic voltage balancing；Shielding case realizes the arc-plasma for absorbing sputtering, avoids pollution of the electrical discharge arc to ceramic capacitor；It is built-in
Spark-discharge plasma injection target in have spark ball gap, have in ball gap low temperature point solid material (such as
Iodine), and it is provided with stomata；High-voltage pulse triggering and freewheeling circuit realize the adjustment of discharge energy.
The course of work is that high-voltage pulse trigger circuit generates pulse high-voltage, the fire being applied in plasma jet system
Flower discharge ball gap both ends, after ball gap punctures, freewheel current is injected into discharge channel, generates abundant arc plasma
Body, the heat that arc-plasma and ball-gap discharge moment in plasma chamber body generate make the part low boiling in ball gap
Point solid material transient evaporation generates hyperbar gas, and is injected in plasma chamber body by the spilehole among ball gap, increases
Air pressure in big plasma chamber body, the nozzle that plasma is shunk by top and the bottom is to two sides injection, the plasma of injection
Beam is diffused into each electrode by the centre bore of each electrode, under the action of applying high voltage, each gap triggering and conducting.
The distribution of electrodes of multiple center openings at the both ends of intermediate triggering main electrode, the size of centre bore and injection it is equal from
The diameter of daughter beam is close.It is fixed by insulating supporting between each electrode and by annular pressure ceramic condenser, it is entire external
It is sealed using insulating sleeve.
Intermediate trigger electrode center is sealed and installed with plasma chamber, there is spark ball gap, nozzle in cavity
The composition such as structure, high-pressure connection line.Spark ball gap is hollow structure, and inside has low boiling point solid material (iodine), and in
Heart position is provided with spilehole.The available 3000-5000K of arc-plasma in plasma chamber body, under instantaneous high-temperature, fire
Low boiling point solid material (iodine) transient evaporation in flower discharge ball gap, generates hyperbar gas, and by stomata be injected into etc. from
In daughter cavity, arc-plasma is promoted to be delayed one section after the conducting of entire Multiple level vacuum switch to both ends nozzle movement
Time, when temperature damping is to lower temperature, the iodine solidification of gasification does not influence the vacuum degree entirely switched, and most
Iodine is mainly attached in plasma chamber body, and solid material loss is less, extends solid material service life, next plasma
Body injection is gasified again, further enhances plasma jet speed and height.
Ring-shaped pottery capacitor is on the one hand to being uniformly distributed for each vacuum gap voltage, on the other hand plays support
The effect of each electrode.The shielding case being fixed among ceramic capacitor, which is mainly used for realizing, absorbs vacuum gap plasma discharging
Body avoids the pollution of ceramic capacitor inner surface.
High-voltage pulse triggering and freewheeling circuit are controlled using Fiber isolation, output port and target of whole system etc.
The intracorporal spark ball gap electrical connection of gas ions chamber, whole system are in high potential, are charged using battery, and high voltage pulse is logical
Cross the pulse voltage that high voltage package generates 20-30kV, freewheeling circuit injected pulse electric current after spark-discharge gap breakdown, to generate
More abundant discharge plasma.
The present invention is pressed using multiple gap series and ceramic capacitor, obtains higher voltage class；Using high pressure
Pulse-triggered and freewheeling circuit realize high potential driving, while more energy can be injected in freewheel current, more to generate
Plasma；The hyperbar gas propulsive arc-plasma generated by low boiling point solid material gasification, improves plasma
Body jetting height and speed.The injection of plasma both ends, it is lower than the jetting height that single-ended injection needs, it is more suitable for multiple true
The synchronous triggering of empty gap.The pulse power switch of the invention triggering and conducting reliability, operating voltage range, voltage class,
Repetition rate etc. suffers from important promotion, provides effective means and device for high voltage pulse power application.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the detail structure diagram of intermediate trigger electrode plasma jet cavity of the invention.
Fig. 3 is high-voltage pulse triggering and freewheeling circuit figure of the invention.
Specific embodiment
Multiple level vacuum switch based on plasma jet triggering is mainly by the electrode 3 of multiple center openings, intermediate touching
Power generation pole 8, annular press ceramic capacitor 4, shielding case 18, insulating sleeve 10, are vertically connected with end cap 1,13 and high-voltage pulse touching
Hair and freewheeling circuit (such as Fig. 3) are constituted.
Switch main body of the invention is as shown in Figure 1, the electrode 3,5,11 and 12 of center opening and intermediate trigger electrode 8 are constituted
4 concatenated vacuum gaps.Each gap has shielding case 18, annular to press ceramic capacitor 4, insulating supporting 2 and center
Apertured electrodes are constituted.The true of entire Switch main body is realized using insulating sleeve 10 and upper and lower port 1,13 in the outside of Switch main body
Sky sealing, vacuum degree keep 10-5Pa or less.The entire Switch main body course of work is the plasma of intermediate trigger electrode center
Injection apparatus is generated to upper and lower plasma jet, and the plasma beam of injection passes through the centre bore of each clearance electrode, so
It is further diffused into entire gap afterwards, under the action of extra electric field, the synchronous triggering of entire Multiple level vacuum switch is led
It is logical.
Intermediate trigger electrode 8 is mainly by triggering main electrode, triggering conductor wire 6 and 16, plasma chamber 9, spark discharge
The composition such as ball gap, specific plasma jet inside cavity detailed structure in plasma jet cavity as shown in Fig. 2, have each
A ball gap 24 has hollow ball structure 19 and 25 inside each ball gap, and hollow ball inside is filled with low-boiling solid material (iodine),
And spilehole 21 is provided in the center of spark ball gap.The spark ball gap in left side has insulated enclosure and high-voltage conducting wires
Line is realized to be connected with each other with external connection, the spark ball gap and triggering main electrode 8 on right side.In plasma jet cavity
There are two plasma nozzle, plasma jet can get higher jet velocity and height by the contraction of nozzle 22.
High-voltage pulse triggering and freewheeling circuit are as shown in figure 3, whole system using electric power storage power supply, then passes through DC/AC change
Parallel operation generates 220V power-frequency voltage, realizes pulse voltage capacitor C1 and continued flow capacitor C2 by the transformer that two-port exports
Charging, the charging voltage of continued flow capacitor C2 is higher.The generation of high-voltage pulse is driven by Fiber isolation control system
SCR conducting, so that pulse voltage capacitor C1 discharges to pulsed high-voltage transformer T2 primary side, then in pulsed high-voltage transformer
Secondary side generates the available 20-30kV of pulse high-voltage, and the pulse high-voltage of output is connected respectively by connectivity port 26 and 27
It is connected to the triggering conductor wire 6 and 16 of Multiple level Switch main body, when spark ball gap is hit in the intermediate trigger electrode of Switch main body
After wearing, continued flow capacitor C2, to discharging gap afterflow, injects more energy by high voltage silicon rectifier stack D4.
The foregoing is only a preferred embodiment of the present invention, can extend to more vacuum gaps or this hair
Bright technical solution and its inventive concept is subject to equivalent substitution or change, should be included in protection scope of the present invention.
Claims (5)
1. the Multiple level vacuum switch based on plasma jet triggering, it is characterised in that: it includes the electricity of multiple center openings
Pole, intermediate trigger electrode, annular press ceramic capacitor, shielding case, insulating sleeve, upper connection end cap, lower connection end cap, high pressure
Pulse-triggered and freewheeling circuit；Wherein, the electrode of multiple center openings and intermediate trigger electrode constitute Multiple level vacuum system；
The multiple vacuum gap realizes quiet dynamic voltage balancing by annular pressure ceramic capacitor；Shielding case is used to absorb the electric arc of sputtering
Plasma；There is spark ball gap in the intermediate trigger electrode of built-in spark-discharge plasma injection, the ball gap is provided with
Low temperature point solid material is placed in stomata and ball gap；High-voltage pulse triggering and freewheeling circuit realize the adjustment of discharge energy.
2. Multiple level vacuum switch as described in claim 1, it is characterised in that: the intermediate trigger electrode center is close
Envelope is equipped with plasma chamber, there is spark ball gap, nozzle arrangements, high-pressure connection line in cavity；Spark ball gap is
Hollow structure, there is low boiling point solid material in inside, and is provided with stomata in ball gap center；In the instantaneous high-temperature of 3000-5000K
Under, the low boiling point solid material transient evaporation in spark ball gap generates hyperbar gas, and by stomata be injected into etc. from
In daughter cavity, nozzle movement of the arc-plasma to both ends is promoted, after the conducting of entire Multiple level vacuum switch, delay is pre-
If the time, temperature damping is to realize that vaporized low boiling point solid material solidifies again.
3. Multiple level vacuum switch as described in claim 1, it is characterised in that: the distribution of electrodes of multiple center openings
At the both ends of intermediate trigger electrode, the diameter of plasma beam of size and injection of centre bore is close；Lead between each electrode
It crosses insulating supporting and is fixed by annular pressure ceramic condenser；Switch external is sealed using insulating sleeve.
4. Multiple level vacuum switch as described in claim 1, it is characterised in that: the high-voltage pulse triggering and freewheeling circuit
It is powered using electric power storage, 220V power-frequency voltage is then generated by DC/AC converter, the transformer realization pair exported by two-port
The charging of pulse voltage capacitor C1 and continued flow capacitor C2；The generation of high-voltage pulse is driven by Fiber isolation control system
SCR conducting, so that pulse voltage capacitor C1 discharges to pulsed high-voltage transformer T2 primary side, then in pulsed high-voltage transformer
Secondary side generates the available 20-30kV of pulse high-voltage, and the pulse high-voltage of output is separately connected by two connectivity ports
To two triggering conductor wires of Multiple level Switch main body, after spark ball gap punctures in intermediate trigger electrode, afterflow capacitor
Device C2 is by high voltage silicon rectifier stack D4 to discharging gap afterflow.
5. Multiple level vacuum switch as described in claim 1, it is characterised in that: use multiple gap series and ceramic capacitor
It presses, obtains higher voltage class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185241.6A CN110225641B (en) | 2018-03-01 | 2018-03-01 | Multi-gap vacuum switch based on plasma jet triggering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810185241.6A CN110225641B (en) | 2018-03-01 | 2018-03-01 | Multi-gap vacuum switch based on plasma jet triggering |
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| CN110225641A true CN110225641A (en) | 2019-09-10 |
| CN110225641B CN110225641B (en) | 2023-09-05 |
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| CN201810185241.6A Active CN110225641B (en) | 2018-03-01 | 2018-03-01 | Multi-gap vacuum switch based on plasma jet triggering |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996489A (en) * | 2019-12-09 | 2020-04-10 | 西安交通大学 | Plasma spraying device |
| CN112382527A (en) * | 2020-12-01 | 2021-02-19 | 郑州大学 | Self-voltage-sharing control method for dynamic charge compensation of multi-break vacuum circuit breaker |
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| GB1018076A (en) * | 1963-06-05 | 1966-01-26 | Electrical Res Ass | Improvements relating to electric spark gaps |
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| US20020180276A1 (en) * | 2001-05-31 | 2002-12-05 | Ngk Insulators, Ltd. | Circuit for generating high voltage pulse |
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| CN102364655A (en) * | 2011-11-17 | 2012-02-29 | 武汉大学 | Dynamic voltage sharing device of multi-break vacuum circuit breaker and parameter selection method for dynamic voltage sharing device |
| CN103035441A (en) * | 2012-12-17 | 2013-04-10 | 大连理工大学 | Line-shaped series-connection small-gap dual-fracture vacuum arc-extinguishing chamber |
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| CN1079335A (en) * | 1992-03-28 | 1993-12-08 | 亚瑞亚·勃朗勃威力有限公司 | Electron beam device |
| US20020180276A1 (en) * | 2001-05-31 | 2002-12-05 | Ngk Insulators, Ltd. | Circuit for generating high voltage pulse |
| US20090196804A1 (en) * | 2008-02-05 | 2009-08-06 | Ngk Insulators, Ltd. | Plasma reactor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110996489A (en) * | 2019-12-09 | 2020-04-10 | 西安交通大学 | Plasma spraying device |
| CN110996489B (en) * | 2019-12-09 | 2021-06-01 | 西安交通大学 | Plasma spraying device |
| CN112382527A (en) * | 2020-12-01 | 2021-02-19 | 郑州大学 | Self-voltage-sharing control method for dynamic charge compensation of multi-break vacuum circuit breaker |
| CN112382527B (en) * | 2020-12-01 | 2023-12-19 | 郑州大学 | Self-equalizing control method for dynamic charge compensation of multi-fracture vacuum circuit breaker |
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| CN110225641B (en) | 2023-09-05 |
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Inventor after: Ge Guowei Inventor after: Cheng Xian Inventor after: Qin Ming Inventor after: Cheng Zixia Inventor after: Zhang Penghao Inventor before: Ge Weiguo Inventor before: Cheng Xian Inventor before: Qin Ming Inventor before: Cheng Zixia Inventor before: Zhang Penghao |
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