CN108736318A - Preionization frizzen and the gas switch for using the frizzen - Google Patents
Preionization frizzen and the gas switch for using the frizzen Download PDFInfo
- Publication number
- CN108736318A CN108736318A CN201810495831.9A CN201810495831A CN108736318A CN 108736318 A CN108736318 A CN 108736318A CN 201810495831 A CN201810495831 A CN 201810495831A CN 108736318 A CN108736318 A CN 108736318A
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- China
- Prior art keywords
- electrode
- frizzen
- needle
- preionization
- insulating tube
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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
- 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
- H01T1/16—Series resistor structurally associated with 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
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- Oxygen, Ozone, And Oxides In General (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
The present invention relates to the gas switch of a kind of preionization frizzen and the use frizzen.The present invention is used triggers needle and high_voltage isolation resistance integrated design by preionization, and directly coordinates with trigger electrode, achievees the purpose that simplify and triggers, is compact-sized, and structure includes ceramic insulating tube, triggering needle, high-tension resistive and metal collar；It includes preceding termination electrode, middle part shank and rear end needle point to trigger needle；The middle part shank of triggering needle inserts in ceramic insulating tube, and rear end needle point exposes outside ceramic insulating tube one end, and in the preceding termination electrode of the other end insertion triggering needle of ceramic insulating tube；The outer surface of set metal lantern ring on the outer surface of ceramic insulating tube, ceramic insulating tube also sets up high-tension resistive, and high-tension resistive one end is connect with the preceding termination electrode, and other end is connect with metal collar.
Description
Technical field
The present invention relates to the gas switch of a kind of preionization frizzen and the use frizzen.
Background technology
Gas switch has extensive use, switching characteristic defeated to pulse power driving source in technical field of pulse power
Going out parameter and working condition has conclusive influence.It is that a variety of pulse powers are answered to trigger the gas switch that time delay is short, shake is small
The target pursued with occasion.Preionization triggering is a kind of effective ways reducing switch triggering time delay and shake, influencing mechanism
It is：Preionization, which forms plasma, directly to provide initiating electron for the development of gap breakdown, and preionized discharge generates ultraviolet light
It can cause the photoelectric effect of space photo-ionisation and cathode, these are conducive to the triggering breakdown of gas gap, improve switch
Trigger performance.
There are many modes for generating preionization, and spark discharge ionic activity is high, and the high energy ultraviolet photon of generation is more, split
It is apparent to close shake reducing effect, using more in high power closure switch.
The stylus structure that typical spark discharge preionization generally uses：
1, the 40164 type flow-through gas switch, the gas switch etc. used in Xibei Nuclear Techn Inst of U.S. L-3 companies,
Refer to cited literature 2【1-3】.Preionization is triggered and is integrally embedded in trigger electrode after insulating layer on needle guard by the type switch, triggering
Electrode centers trepanning, triggering needle constitute preionization gap with hole wall.By using the preionization trigger architecture, switch from fluttering is reachable
To the good result less than 1ns.And in order to ensure that trigger pulse makes preionization gap effectively puncture, it needs to introduce in switch external
Two-way trigger terminal connects preionization needle all the way, connects trigger electrode all the way, the isolation resistance of high value is bridged between terminal.It is real
Isolation resistance needs to be connected to meet the requirement of isolation resistance pressure resistance by multiple resistance in the application of border.Additionally, due to two output ends
Minor structure is identical, and triggering connection is easy to obscure error.Thus while the triggering mode can effectively reduce triggering shake, but it is outer
The slightly aobvious complexity of portion's structure, is not suitable for the occasion of high-volume switch application.
2, a kind of preionization triggers tubular type construction of switch, refers to cited literature 2【4】.Preionization triggers pipe and is embedded in ground electrode,
Triggering tube head is dish type, and an intermediate annular electrode, triggering disk, annular electrode and ground are added between triggering disk and ground electrode
The indirect divider resistance of electrode.After trigger pulse arrives, triggering disk generates preionization, subsequent main gap with annular electrode electric discharge
Breakdown.This method avoid the ablations of triggering needle, but it is unstable to switch breakdown mode, by resistance at the time of preionization gap breakdown
The factors such as resistance value and annular electrode position are affected.
3, the preionization gas switch structure of a kind of autocoupling type, refers to cited literature 2【5-6】Although simple to a certain extent
Trigger architecture is changed, but has only limited the use of in high-voltage pulse gas switch.
Therefore, at present preionization construction of switch because structure it is not compact enough, electric discharge the problems such as being not sufficiently stable, limits the structure
Application.
【1】Naff J T.Spark gaps for EMP and SREMP pulsers[C]//Proc of IEEE
Pulsed Power Conference.2009:322-331.
【2】The PSPICE simulations of Chen Wei blueness ultraviolet preionization trigger circuits calculate [C] first High current pulse accelerator skills
Art seminar, 2005.
【3】The Xi'an development [D] of the low inductance low jitter MARX generators of Zeng Jiangtao .3MV：Xibei Nuclear Techn Inst,
2006.
【4】Chen Weiqing was once hit exactly, Lai Dingguo, and is waited to trigger cast the research of gas switch trigger electrode structure [J] light lasers
With the particle beams, 2005,17 (8)：1213-1215.
【5】Li Junna, Xue Binjie, Jia Wei, design [J] the light lasers for waiting .3MV autocoupling type ultraviolet preionizations to switch and grain
Beamlet, 2009,21 (8):1255-1258.
【6】The lateral capacitance autocoupling type ultraviolet preionizations such as Chen Han, Yang Hanwu, Zhang Zicheng switch [J] light lasers and particle
Beam, 2013,25 (08):2035-2039.
Invention content
In order to solve the problems in background technology, the present invention proposes a kind of preionization frizzen for gas switch,
It is used triggers needle and high_voltage isolation resistance integrated design by preionization, and directly coordinates with trigger electrode, reaches simplified
Triggering, compact-sized purpose.
It is also proposed that a kind of simple gas switch of trigger architecture.
The specific technical solution of the present invention is：
The present invention provides a kind of preionization frizzens, including ceramic insulating tube, triggering needle, high-tension resistive and metallic sheath
Ring；
It includes preceding termination electrode, middle part shank and rear end needle point to trigger needle；The middle part shank of triggering needle is inserted into ceramic exhausted
Edge pipe it is interior, rear end needle point exposes outside ceramic insulating tube one end, and the front end electricity of the other end insertion triggering needle of ceramic insulating tube
In extremely；
The outer surface of set metal lantern ring on the outer surface of ceramic insulating tube, ceramic insulating tube also sets up high-tension resistive, high
Piezoresistance one end is connect with the preceding termination electrode, and other end is connect with metal collar.
Further, above-mentioned high-tension resistive is high-pressure glass glaze resistance, coats or be printed in pottery by resistance slurry
Porcelain insulating tube outer surface, and high temperature sintering forms.
Further, in order to increase the equivalent inductance of resistance, isolation effect is improved, the high-tension resistive is spiral shape.
Further, for the ease of mounting and dismounting frizzen, above-mentioned metal collar outer surface, which is carved, is equipped with screw thread.
The invention also proposes a kind of gas switch using above-mentioned preionization frizzen comprising preionization triggers
Bar and electrode structure, electrode structure include upper high-field electrode, lower high-field electrode, intermediate trigger electrode and insulating cylinder；It is intermediate
Trigger electrode is arranged between upper high-field electrode, lower high-field electrode；The insulating cylinder is arranged in upper high-field electrode, lower high-field electrode
Between marginal position at, for sealing, insulating and support；
Introduction hole is triggered there are one being opened up on the barrel of the insulating cylinder；
It is provided with needle point on the intermediate trigger electrode；
Described frizzen one end is inserted into the triggering introduction hole by the preceding termination electrode and to external spatially extended,
The other end is fixedly mounted on the middle part trigger electrode by metal collar and the rear end needle point and the intermediate trigger electrode
On needle point between constitute pre-arcing gap.
Further, in above-mentioned gas switch, pre-arcing gap is 1mm.
Further, in above-mentioned gas switch, sealing ring is set between preceding termination electrode and triggering introduction hole, it is whole for ensureing
The air-tightness of a gas switch.
Further, in above-mentioned gas switch, intermediate trigger electrode is annular electrode, and the needle point is arranged in annular electrode
Inner wall on.
Gas switch electrode trigger theory is in the present invention：
Trigger pulse is introduced from the tip electrodes of preionization needle, due to the effect of high_voltage isolation resistance, triggers needle and triggering
There is voltage difference between electrode, therefore strikes sparks and discharge in preionization gap.
The beneficial effects of the invention are as follows：
1, simple in structure, triggering rod structure that the present invention uses and and the matched mode of intermediate trigger electrode so that
The gas switch of the present invention only needs trigger terminal all the way that the triggering in preionization gap and gas switch gap, triggering side can be realized
Formula is simple and effective, and the mistake that triggering connection is obscured occurs due to will not be more than the trigger terminal.
2, the frizzen that the present invention uses uses integrated design, high-tension resistive and triggering needle is integrated, reliably
Property it is high.
3, the gas switch high-tension resistive that the present invention uses is placed in inside electrode structure, high with the increase of gas pressure
The creeping discharge characteristic of piezoresistance increases therewith, small, and insulation surplus is high.
4, frizzen of the present invention is connect compact with trigger electrode, and mounting means is simple, and it is more sharp to use sealing ring
Air-tightness inside electrode structure.
5, the high-tension resistive of frizzen of the present invention is spiral shape, and the setting of the shape increases the equivalent electricity of high-tension resistive
Sense improves isolation effect.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of embodiment of gas switch of the present invention.
Fig. 2 is the structural schematic diagram of preionization frizzen of the present invention.
Reference numeral is as follows：
The upper high-field electrodes of 1-, high-field electrode under 2-, 3- insulating cylinders, 4- trigger electrodes, 5- ceramic insulating tubes, 6- trigger needle,
Termination electrode, the middle parts 62- shank, the rear ends 63- needle point, 7- high-pressure glass glaze resistance, 8- metal collars before 61-.
Specific implementation mode
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, gas switch provided by the invention includes frizzen and electrode structure；Electrode structure includes upper height
Piezoelectricity pole 1, lower high-field electrode 2, insulating cylinder 3 and intermediate trigger electrode 4；Intermediate trigger electrode is arranged in upper high-field electrode, lower height
Between piezoelectricity pole；The insulating cylinder is arranged at the marginal position between upper high-field electrode, lower high-field electrode, for sealing, absolutely
Edge and support；
Upper high-field electrode 1, lower high-field electrode 2 are made of stainless steel, and section is semi-circular at electric discharge.3 material of insulating cylinder by
The insulating materials such as organic glass, nylon make, and open that there are one trigger introduction hole on barrel.
Intermediate trigger electrode 4 is annular electrode, and overall diameter 50mm, interior diameter 30mm are highly 15mm.Material is stainless
Steel, electric discharge section are semi-circular.Intermediate trigger electrode lateral opening hole, the needle point with hole corresponding position weld diameter 2mm.Centre triggering
Electrode 4 constitutes the point of discharge gap of two 5mm between upper high-field electrode, lower high-field electrode respectively.
Preionization frizzen is made of ceramic insulating tube 5, triggering needle 6, high-tension resistive 7 and metal collar 8, as shown in Figure 2.
Ceramic insulating tube 5 outer diameter 7mm, internal diameter 2mm.
It includes preceding termination electrode 61, middle part shank 62 and rear end needle point 63 to trigger needle 6；Trigger the middle part shank diameter of needle 6
For 2mm, ceramic insulating tube 5 is penetrated, and rear end needle point 63 stretches out outside ceramic insulating tube 5.
High-tension resistive 7 (high-pressure glass glaze resistance) is outer wall of the spiral shape sintering in ceramic insulating tube 5, and resistance value is the Europe 1M
Nurse, length 20mm.One end of high-tension resistive is connected with the preceding termination electrode of triggering needle, and the other end is welded with metal collar.
Metal collar 8 is sleeved on ceramic insulating tube 5, and external screw thread can be connected to a fixed entirely with intermediate trigger electrode 4
Trigger rod structure.It triggers triggering needle 6 after rod structure is fixed and constitutes pre-arcing gap, gap with the needle point on intermediate trigger electrode 4
Distance 1mm.
6 front end electrode diameter 10mm of needle is triggered, the triggering for being inserted into insulating cylinder 3 on the electrode sleeve of front end after sealing ring introduces
The sealing of gas is realized in hole.
The gas switch operating voltage of the present embodiment is ± 30kV, and upper high-field electrode 1 connects positive polarity voltage, lower high-voltage electricity
Pole 2 connects reverse voltage.Amplitude is used to be triggered for the high pressure fast pulse of 60kV.Working media is empty using dry compression
Gas.
The course of work of switch triggering is as follows：At work, switch ends application ± 30kV high direct voltages, triggering is electric at this time
Pole is in 2 symmetrical shaft position of upper high-field electrode 1 and lower high-field electrode, and intermediate trigger electrode potential is zero.By forward position 20ns, amplitude
When the high-voltage pulse of 60kV is applied on frizzen, pre-arcing gap punctures in trigger pulse forward position, generates ultraviolet irradiation and has
The initiating electron of effect.Meanwhile intermediate 4 current potential of trigger electrode rises to 60kV, makes intermediate trigger electrode 4 and lower 2 shape of high-field electrode
At gap electrical field increase sharply, which punctures.Then 4 current potential of intermediate trigger electrode overturning, it is another
Due to electric field distortion, overvoltage makes its breakdown in half switch point of discharge gap.Since pre- gap can generate ultraviolet irradiation and provide just
Beginning electronics, while preionization gap is acted on trigger pulse by certain steepness, therefore the shake of switch triggering time delay can reach
To several nanoseconds.
The present embodiment gives sufficient explanation to invention content, and those of ordinary skill is enough to illustrate through the invention
The content of book is implemented.The cooperation of preionization frizzen and electrode structure given by embodiment is answering in gas switch
It is applied including but not limited to three electrode fields with a kind of typical way, the preionization frizzen and with the fit system of electrode structure
Distort gas switch, can be also used for the occasions such as multi-gap gas switch and high-voltage pulse gas switch.Preionization is triggered
Needle and high_voltage isolation resistance carry out integrated design and the pre- electrode structure directly coordinated with trigger electrode is this patent
Protection domain.Under the frame of claim, any improvement based on thinking of the present invention belongs to the interest field of the present invention.
Claims (8)
1. a kind of preionization frizzen, it is characterised in that：Including ceramic insulating tube (5), triggering needle (6), high-tension resistive (7) and
Metal collar (8)；
It includes preceding termination electrode (61), middle part shank (62) and rear end needle point (63) to trigger needle (6)；Trigger the middle part shank of needle
(62) it inserts into ceramic insulating tube (5), rear end needle point (63) exposes outside ceramic insulating tube (5) one end, and ceramic insulating tube (5)
The other end insertion triggering needle preceding termination electrode (61) in；
Set metal lantern ring (8) on the outer surface of ceramic insulating tube (5), the outer surface of ceramic insulating tube (5) also set up high-voltage electricity
It hinders (7), high-tension resistive (7) one end is connect with the preceding termination electrode (61), and other end is connect with metal collar (8).
2. preionization frizzen according to claim 1, it is characterised in that：The high-tension resistive is glaze resistance,
It is coated by resistance slurry or is printed in ceramic insulation tube outer surface, and high temperature sintering forms.
3. preionization frizzen according to claim 1 or 2, it is characterised in that：The high-tension resistive is spiral shape.
4. preionization frizzen according to claim 3, it is characterised in that：Metal collar outer surface, which is carved, is equipped with screw thread.
5. a kind of gas switch, including frizzen and electrode structure, electrode structure include upper high-field electrode, lower high-field electrode,
Intermediate trigger electrode and insulating cylinder, intermediate trigger electrode are arranged between upper high-field electrode, lower high-field electrode；The insulating cylinder
It is arranged at the marginal position between upper high-field electrode, lower high-field electrode, for sealing, insulating and support；
It is characterized in that：
The frizzen is the preionization frizzen described in claim 1-4 any claims；
Introduction hole is triggered there are one being opened up on the barrel of the insulating cylinder；
It is provided with needle point on the intermediate trigger electrode；
Described frizzen one end is inserted into the triggering introduction hole by the preceding termination electrode and to external spatially extended, another
End is fixedly mounted by metal collar on the middle part trigger electrode and on the rear end needle point and the intermediate trigger electrode
Pre-arcing gap is constituted between needle point.
6. gas switch according to claim 5, it is characterised in that：The pre-arcing gap is 1mm.
7. gas switch according to claim 5 or 6, it is characterised in that：Between the preceding termination electrode and triggering introduction hole
Sealing ring is set.
8. gas switch according to claim 7, it is characterised in that：The intermediate trigger electrode is annular electrode, described
Needle point is arranged on the inner wall of annular electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495831.9A CN108736318B (en) | 2018-05-22 | 2018-05-22 | Preionization trigger rod and gas switch adopting same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495831.9A CN108736318B (en) | 2018-05-22 | 2018-05-22 | Preionization trigger rod and gas switch adopting same |
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| Publication Number | Publication Date |
|---|---|
| CN108736318A true CN108736318A (en) | 2018-11-02 |
| CN108736318B CN108736318B (en) | 2019-12-27 |
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| CN201810495831.9A Expired - Fee Related CN108736318B (en) | 2018-05-22 | 2018-05-22 | Preionization trigger rod and gas switch adopting same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913555A (en) * | 2019-12-06 | 2020-03-24 | 西安交通大学 | Plasma jet switch |
| CN111613970A (en) * | 2020-05-28 | 2020-09-01 | 西安交通大学 | High-capacity four-electrode ultraviolet preionization gas switch |
| CN113394661A (en) * | 2021-06-23 | 2021-09-14 | 长安大学 | Corona stabilizing switch of annular knife-flat plate electrode and working method thereof |
| CN114006271A (en) * | 2021-09-26 | 2022-02-01 | 西北核技术研究所 | Low-jitter self-triggering spark discharge preionization switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498782A (en) * | 1990-08-16 | 1992-03-31 | Fuji Electric Co Ltd | Lightning protection device for power line |
| CN101103503A (en) * | 2004-12-22 | 2008-01-09 | 伊万霍工业公司 | Multichannel discharger and high power pulse generator with a plurality of gaps |
| CN102130670A (en) * | 2011-03-15 | 2011-07-20 | 华中科技大学 | Multipole field breakdown type vacuum trigger switch |
| CN103441427A (en) * | 2013-09-09 | 2013-12-11 | 西安交通大学 | Multichannel gas spark switch applying plasma synthesis jet trigger technology |
-
2018
- 2018-05-22 CN CN201810495831.9A patent/CN108736318B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0498782A (en) * | 1990-08-16 | 1992-03-31 | Fuji Electric Co Ltd | Lightning protection device for power line |
| CN101103503A (en) * | 2004-12-22 | 2008-01-09 | 伊万霍工业公司 | Multichannel discharger and high power pulse generator with a plurality of gaps |
| CN102130670A (en) * | 2011-03-15 | 2011-07-20 | 华中科技大学 | Multipole field breakdown type vacuum trigger switch |
| CN103441427A (en) * | 2013-09-09 | 2013-12-11 | 西安交通大学 | Multichannel gas spark switch applying plasma synthesis jet trigger technology |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110913555A (en) * | 2019-12-06 | 2020-03-24 | 西安交通大学 | Plasma jet switch |
| CN111613970A (en) * | 2020-05-28 | 2020-09-01 | 西安交通大学 | High-capacity four-electrode ultraviolet preionization gas switch |
| CN111613970B (en) * | 2020-05-28 | 2022-05-20 | 西安交通大学 | High-capacity four-electrode ultraviolet preionization gas switch |
| CN113394661A (en) * | 2021-06-23 | 2021-09-14 | 长安大学 | Corona stabilizing switch of annular knife-flat plate electrode and working method thereof |
| CN114006271A (en) * | 2021-09-26 | 2022-02-01 | 西北核技术研究所 | Low-jitter self-triggering spark discharge preionization switch |
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| CN108736318B (en) | 2019-12-27 |
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