CN104135250A - Pulse power device based on annular ceramic solid state line - Google Patents
Pulse power device based on annular ceramic solid state line Download PDFInfo
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- CN104135250A CN104135250A CN201410356613.9A CN201410356613A CN104135250A CN 104135250 A CN104135250 A CN 104135250A CN 201410356613 A CN201410356613 A CN 201410356613A CN 104135250 A CN104135250 A CN 104135250A
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Abstract
The present invention discloses a pulse power device based on an annular ceramic solid state line, which includes several pulse forming lines, two charging inductors, and multiple gas switches connected together as a whole based on a Marx voltage superposition; the pulse forming lines are annular pulse forming lines, and an annular surface of each annular pulse forming line is provided with a gas opening; and the annular pulse forming lines successively overlap together to form one column structure, each charging inductor passes through an inner ring of the annular pulse forming line to be disposed inside the column structure, and an annular insulating plate is disposed between every two annular pulse forming lines. The present invention enables the structure to be more compact with the power volume ratio increased by at least 50% comparing with that of the pulse power system currently reported domestically and overseas, while the coaxial design enables more even electric field distribution of the whole device, thereby benefiting reduction of high-voltage breakdown incidents caused by voltage distortion.
Description
Technical field
The present invention relates to Pulse Power Techniques field, specifically refer to a kind of rectangular pulse high pressure generating apparatus.Can be applied to the fields such as spark photograph, High-Power Microwave, high power RF technology, investigation of materials.
Background technology
The miniaturization of high power pulse power source is the important directions of current Pulse Power Techniques research.The aspect application such as HPM, X ray, laser research are higher to electron beam quality requirement, and in the urgent need to development rectangular pulse compact pulse power supply, the rectangular pulse power source research based on Marx voltage superimposing technique becomes domestic and international study hotspot in recent years.Several technological approaches that adopt at present have: the 1st, and adopt pulse forming network (PFN) to form pulse, by Marx technology, realize voltage stack output; The 2nd, adopt hv transmission line to form pulse, by Marx technology, realize voltage stack output; The 3rd, adopt flat plate type linear solidus to form pulse, by Marx technology, realize voltage stack output.Adopt above technology path to succeed in developing some Small-Sized Pulsed power sources, but the practical distance in addition of the power to volume ratio horizontal range that these devices are realized.
In approach 1, adopt pulse forming network to form pulse technique and there is certain advantage on generation long pulse, but when producing a hundred or so nanosecond, because lumped parameter electric capacity and inductance can make before and after pulse along very long, moreover, because high voltage ceramic capacitor or film capacitor volume are larger at present, producing the relatively good pulse voltage of flat-top needs multistage capacitor and inductor, makes whole pulse network volume larger.For approach 2, adopt hv transmission line to form pulse, due to dielectric constant lower (dielectric constant of the deionized water that known dielectric constant is the highest at present also only has 81), produce the electrical length that the high-voltage pulse of certain pulse duration needs very long, be unfavorable for the trend of whole pulse power equipment miniaturization development.Although approach 3 adopts flat plate type linear solidus to form the dielectric constant that pulse can be relatively high, but dull and stereotyped solidus is because it forms pulse according to wave reflection principle, in communication process because reflection can make waveform quality poor, pulser is to be all connected with switch by lead-in wire at present simultaneously, can make whole loop inductance larger, be unfavorable for forming the high-voltage pulse in fast pulse forward position.In order to reduce switch, connect inductance, during multistage marx stack, structural design will be very complicated simultaneously.
Early stage, the inventor developed a kind of ring-like state pulse forming line of electrode opening, patent applied for (the patent No.: 201420085748.1) although it compares flat plate type linear solid state pulse line is being greatly improved aspect densification and miniaturization, but because the tip of the silver coating at opening part two ends can make field intensity bigger than normal compared with other places, have point discharge problem, the simultaneously enhancing of field intensity can cause the body of ceramic material to puncture and the generation of edge flashing; Also the problems such as waveform quality variation simultaneously that exist dull and stereotyped state pulse forming line voltage wave reflection to bring.
Summary of the invention
For above-mentioned prior art scheme, produce the pulse power device of high-voltage pulse, technical problem to be solved by this invention is to provide the pulse power device of a set of miniaturization, and it can realize fast pulse forward position, high compact, waveform quality is good, the high-voltage pulse output of high-power volume ratio.This type pulse power device can be applied to the fields such as spark photograph, High-Power Microwave, high power RF technology, investigation of materials, has important social benefit and objective economic benefit.
The technical solution used in the present invention: a kind of pulse power device based on ring-shaped pottery solidus, comprise that the pulse being arranged in cylinder produces section and load end, both are by insulation board seal isolation; Described pulse produces section and comprises that several pulse forming lines, two charging inductances, several gas switchs superpose and connect as one based on Marx voltage; It is characterized in that described pulse forming line is that loop pulse forms line, the annular surface that each loop pulse forms line is provided with a gas switch electrode, and the gas switch electrode that adjacent two loop pulses form line surface forms switch; Described loop pulse forms line and is superimposed successively and is formed a column construction by gas switch, described charging inductance is arranged on the inside of column construction through the interior ring of loop pulse formation line, described every two loop pulses form between line and are provided with annular insulation board.
In technique scheme, described loop pulse forms line and comprises ring-shaped pottery medium substrate and electrode layer; Described electrode layer is the annulus of closed loop, is respectively arranged with electrode layer, the concentric of two electrode layers, same radius on two annular surfaces of described ring-shaped pottery medium substrate.
In technique scheme, described gas switch comprises two electrodes, and one of them electrode is that dull and stereotyped copper sheet is directly welded on the electrode layer on annular insulated substrate; Another electrode is threaded screw rod, is welded on another electrode layer on annular insulated substrate.
In technique scheme, on described threaded screw rod, be provided with one can adjusting position nut.
In technique scheme, the position of two electrode weldings of described gas switch is corresponding up and down.
In technique scheme, described two adjacent annular insulation board radiuses are different.
In technique scheme, described from outbound course to import and export the radius to the insulation board of odd number layer be greater than the insulation board radius of even level, and on the edge of the insulation board of odd number layer, be provided with a ring through hole.
In technique scheme, the same direction of described insulation panel therefor is provided with opening.
In technique scheme, the electrode position that described adjacent two loop pulses form air switch on line is corresponding, and the spacing of the gas switch between two loop pulse formation lines regulates by nut.
In the present invention, for solving the tip of the silver coating at existing opening part two ends, can make the waveform quality variation problem that field intensity is large and the reflection of voltage wave in communication process brings, the present invention has adopted a kind of ring-like state pulse forming line of totally-enclosed silver-coated electrode, this ring-like solid-state formation line be on two faces of the annular plate of ceramic material totally enclosed plate silver as electrode, do not stay opening, therefore do not have reflection problems.The generation of its accurate rectangle high-voltage pulse is according to pulse edge loop wire transmitted in both directions, the Forming Theory of output in parallel, compared with flat plate type linear state pulse forming line, according to wave reflection principle, produce accurate rectangular pulse technology, its waveform quality can improve significantly, pulse front edge can be improved, and therefore by the method, has avoided voltage wave wave reflection when propagating into end face to cause the problem of waveform quality variation.Simultaneously owing to there is no open end, also do not exist the tip of end silver electrode to exist, thereby make Electric Field Distribution more even, the limited possibility of avoiding point discharge, whole ring-like ceramic silver plating makes Electric Field Distribution more even simultaneously, can improve the withstand voltage level of whole state pulse forming line, reduce the probability of happening of edge flashing.
In the present invention, two electrodes of gas switch are directly welded on two silver electrodes of ring-like state pulse forming line, two electrodes are respectively a circular dull and stereotyped copper sheet and a threaded screw rod, by designing an electrode nut, be screwed on screw rod, when multistage ring-like state pulse forming line carries out marx stack, can be by regulating electrode nut to regulate the spacing of gas switch between two ring-like state pulse forming lines.So just make gas switch and solid state pulse line form an integral body, reduced the direct connecting line of pulse forming line and gas switch, thereby the connection inductance of each switch is reduced, the loop inductance of whole discharge loop reduces greatly, the reduction of loop inductance can effectively improve pulse front edge, optimizes output high-voltage pulse quality.
In the present invention, pulse forming line, gas switch and charging inductance are all arranged along axis is stacked, and gas switch is closely arranged between formation wire loop, and charging inductance is placed in the space that forms line encirclement.Because state pulse forming line and urceolus are all the designs of coaxial type, so just make between high-pressure side on ring-like state pulse forming line electrode and urceolus field distribution more even, risk and the probability of point discharge have greatly been reduced, under certain insulation voltage, needed insulating space just reduces greatly, can realize preferably the miniaturization of whole device.While superposeing due to multi-stage solid stage pulse forming line simultaneously, every grade of formation line is little on Electric Field Distribution impact around, be not easy to produce the problems such as electric field distortion, thereby around making in voltage wave discharge process, electric field or other solid pulse forming lines are little on its discharge electric field impact, and output pulse waveform quality is high.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows: whole pulse power system has been owing to having adopted coaxial integrated design in structure, make in structure compactlyer, its power to volume ratio improves at least 50% with there being at present the pulse power system of report both at home and abroad; Coaxial design makes whole device Electric Field Distribution more even simultaneously, is conducive to reduce the high-voltage breakdown event that voltage distortion causes.Adopt annular solid-state formation line can export the high-voltage pulse in fast pulse forward position as producing pulse unit.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial structurtes schematic diagram of pulse forming line of the present invention;
Fig. 3 is the structural representation that annular forms line;
Fig. 4 is typical output voltage waveforms;
Wherein: the 1st, charging inductance, the 2nd, loop pulse forms line, the 3rd, annular insulation board, the 4th, earth connection, the 5th, nut, the 6th, dull and stereotyped copper sheet, the 7th, charging input end, the 8th, high-voltage output end, the 9th, insulating barrier, the 10th, load, the 11st, electrode layer, the 12nd, ceramic dielectric substrate.
Embodiment
Disclosed all features in this specification, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
As shown in Figure 1, the pulse power device based on ring-shaped pottery solidus of the present invention comprises the pulse being arranged in cylinder and produces section and load patch composition, and pulse produces between section and load patch and sealed and separated by insulating barrier.Pulse produces section and fills SF
6gas (or SF
6with N
2mist) insulation, load patch is filled transformer oil insulation, and between two kinds of dielectrics, with the isolation of polymethyl methacrylate insulation board, in figure, the urceolus of whole device does not draw.It is the main body of device that pulse produces section, comprises that loop pulse forms the parts such as line, gas switch, annular insulation board, charging inductance.
As shown in Figure 2.Loop pulse forms line, gas switch and charging inductance and all along axis is stacked, arranges, gas switch is closely arranged between formation wire loop, two groups of charging inductances are placed in the space that forms line encirclement, and except chopped-off head and final stage, other grade of pulse forming line adopts two ring series connection to use.Load adopts water resistance or diode.For fastening annular forms line, at the circumferential edges of annular insulation board, be provided with through hole, in through hole, insert threaded screw rod, from compressing every one deck loop pulse with clamp nut and form line in layer topmost.During work, the charging input end of charge power supply is connected with charging inductance, by charging inductance paired pulses, form line parallel and charge to predetermined voltage, switch conduction when magnitude of voltage is greater than the puncture voltage of gas switch, pulse forming line voltage stacks at different levels produce high-voltage pulse to load discharge, by high-voltage output end, high-voltage pulse are outputed to load.Charging inductance can be regarded short circuit as between charge period, at pulse forming line interdischarge interval, realizes and forms between line unit and form the isolation between line and power supply.
Charging inductance is built in ring-like state pulse forming line, and one side is conducive to the impact that prevents that electric field distortion from bringing like this, also can realize the object of densification and miniaturization simultaneously.Between two ring-like solid state pulse lines, pass through nylon or polymethyl methacrylate as dielectric, insulation thickness basis is applied to the voltage at ring-like state pulse forming line two ends and the insulation field intensity under SF6 gas unit distance is determined, two copper electrodes at adjacent two ring-like state pulse forming line two ends are as gas switch, because whole pulse produces the SF6 gas that section has been full of certain pressure, so SF6 is as the dielectric of gas switch and pulse forming line.
As shown in Figure 3, loop pulse forms line by an annular ceramic dielectric substrate, on two ring surfaces of ceramic dielectric substrate, is provided with one deck annular electrode, and electrode adopts silver-plated mode to arrange.Ceramic dielectric substrate is the potsherd after sintering, and the width at annular electrode layer two ends is less than potsherd width (5mm), increases the breakdown length of electrode, thereby prevents that edge flashing from puncturing.In order to reduce inductance, gas switch is directly welded on the electrode layer of loop pulse formation line, gas switch has two electrodes, one of them electrode adopts dull and stereotyped copper sheet to be welded on electrode layer, the electrode of another gas switch adopts threaded screw rod, is welded on another electrode layer of loop pulse formation line; Two electrodes of gas switch are consistent in vertical direction.
As Fig. 4, the waveform that experiment obtains is good rectangular pulse output, the about 60ns of output pulse halfwidth (FWHM), and forward position 8.2ns, the lower voltage efficiency of coupling is greater than 90%.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (9)
1. the pulse power device based on ring-shaped pottery solidus, comprises that the pulse being arranged in cylinder produces section and load end, and both are by insulation board seal isolation; Described pulse produces section and comprises that several pulse forming lines, two charging inductances, several gas switchs superpose and connect as one based on Marx voltage; It is characterized in that described pulse forming line is that loop pulse forms line, the annular surface that each loop pulse forms line is provided with a gas switch electrode, and the gas switch electrode that adjacent two loop pulses form line surface forms switch; Described loop pulse forms line and is superimposed successively and is formed a column construction by gas switch, described charging inductance is arranged on the inside of column construction through the interior ring of loop pulse formation line, described every two loop pulses form between line and are provided with annular insulation board.
2. a kind of pulse power device based on ring-shaped pottery solidus according to claim 1, is characterized in that described loop pulse forms line and comprises ring-shaped pottery medium substrate and electrode layer; Described electrode layer is the annulus of closed loop, is respectively arranged with electrode layer, the concentric of two electrode layers, same radius on two annular surfaces of described ring-shaped pottery medium substrate.
3. a kind of pulse power device based on ring-shaped pottery solidus according to claim 1 and 2, is characterized in that described gas switch comprises two electrodes, and one of them electrode is that dull and stereotyped copper sheet is directly welded on the electrode layer on ring-shaped pottery medium substrate; Another electrode is threaded screw rod, is welded on another electrode layer on ring-shaped pottery medium substrate.
4. a kind of pulse power device based on ring-shaped pottery solidus according to claim 3, it is characterized by described threaded screw rod, be provided with one can adjusting position nut.
5. a kind of pulse power device based on ring-shaped pottery solidus according to claim 3, the position of two electrode weldings that it is characterized by described air switch is corresponding up and down.
6. a kind of pulse power device based on ring-shaped pottery solidus according to claim 1, is characterized by described two adjacent annular insulation board radiuses different.
7. a kind of pulse power device based on ring-shaped pottery solidus according to claim 6, it is characterized by described from outbound course to import and export the radius to the insulation board of odd number layer be greater than the insulation board radius of even level, and on the edge of the insulation board of odd number layer, be provided with a ring through hole.
8. a kind of pulse power device based on ring-shaped pottery solidus according to claim 7, the same direction that it is characterized by described insulation panel therefor is provided with opening.
9. according to a kind of pulse power device based on ring-shaped pottery solidus described in claim 1 or 4 or 5, the electrode position that it is characterized by air switch on described adjacent two loop pulses formation line is corresponding, and the spacing of the gas switch between two loop pulse formation lines regulates by nut.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410356613.9A CN104135250B (en) | 2014-07-25 | 2014-07-25 | A kind of pulse power device based on ring-shaped pottery solidus |
| PCT/CN2015/085020 WO2016011972A1 (en) | 2014-07-25 | 2015-07-24 | Pulse power device based on annular ceramic solid state line |
| US15/325,257 US10312890B2 (en) | 2014-07-25 | 2015-07-24 | Pulse power device based on annular ceramic solid state line |
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| CN201410356613.9A CN104135250B (en) | 2014-07-25 | 2014-07-25 | A kind of pulse power device based on ring-shaped pottery solidus |
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| CN104218923A (en) * | 2014-09-24 | 2014-12-17 | 中国工程物理研究院应用电子学研究所 | Disc-type quaternary compact Marx generator |
| WO2016011972A1 (en) * | 2014-07-25 | 2016-01-28 | 中国工程物理研究院应用电子学研究所 | Pulse power device based on annular ceramic solid state line |
| CN106712744A (en) * | 2016-12-14 | 2017-05-24 | 中国人民解放军国防科学技术大学 | Semicircular coaxial high-power pulse formation line |
| CN109548349A (en) * | 2018-11-30 | 2019-03-29 | 中国工程物理研究院流体物理研究所 | A kind of Gao Zhongying solid pulse power source integrates prototype devices |
| CN109714028A (en) * | 2019-03-13 | 2019-05-03 | 中国工程物理研究院应用电子学研究所 | A kind of compact Marx generator of modular same spindle-type |
| CN110855273A (en) * | 2019-12-23 | 2020-02-28 | 中国工程物理研究院流体物理研究所 | Arc-shaped solid-state pulse forming line and design method thereof |
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| CN204013444U (en) * | 2014-07-25 | 2014-12-10 | 中国工程物理研究院应用电子学研究所 | A kind of pulse power device based on ring-shaped pottery solidus |
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| CN109548349A (en) * | 2018-11-30 | 2019-03-29 | 中国工程物理研究院流体物理研究所 | A kind of Gao Zhongying solid pulse power source integrates prototype devices |
| CN109548349B (en) * | 2018-11-30 | 2023-09-19 | 中国工程物理研究院流体物理研究所 | High repetition frequency solid-state pulse power source integrated prototype device |
| CN109714028A (en) * | 2019-03-13 | 2019-05-03 | 中国工程物理研究院应用电子学研究所 | A kind of compact Marx generator of modular same spindle-type |
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| CN110855273A (en) * | 2019-12-23 | 2020-02-28 | 中国工程物理研究院流体物理研究所 | Arc-shaped solid-state pulse forming line and design method thereof |
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