CN104617489B - Track switch with edge of a knife ultraviolet preionization and triggering circuit thereof - Google Patents
Track switch with edge of a knife ultraviolet preionization and triggering circuit thereof Download PDFInfo
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- CN104617489B CN104617489B CN201510023271.3A CN201510023271A CN104617489B CN 104617489 B CN104617489 B CN 104617489B CN 201510023271 A CN201510023271 A CN 201510023271A CN 104617489 B CN104617489 B CN 104617489B
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Abstract
The invention discloses the track switch of a kind of band edge of a knife ultraviolet preionization and trigger circuit, including upper electrode, bottom electrode, trigger electrode, insulation lock chamber and insulation cover plate, upper and lower electrode is symmetrical set, middle trigger electrode uses two pieces of knife edge electrodes, all electrodes are fixed on insulation lock chamber and insulation cover plate by CARBURIZING FURNACE FOR STAINLESS FASTENER, and insulation lock chamber and insulation cover plate are fixed together by nylon screw.Track switch of the present invention can be stably formed multichannel, can improve the through-current capability of switch, extend the life-span of switch and reduce the shake of switch while reducing switched inductors.
Description
Technical field
The present invention relates to gas discharge switch and trigger circuit, can be used for fast rise time straight pulse transformator particularly to one
Driving source (FLTD), X-Pinch isopulse power device band edge of a knife ultraviolet preionization track switch and trigger electricity
Road.
Background technology
Gas switch as a kind of conventional pulse power switch, have that running voltage is high, conduction electric current is big, it is low to trigger shake,
The advantages such as cost is low, are therefore widely used in high voltage electrical technology field and technical field of pulse power.
As the Typical Representative of high-power pulse source, fast rise time straight pulse transformer driving source (FLTD), X-Pinch etc.
Device to the inductance of gas switch, trigger shake, through-current capability, life-span have higher requirement.But, currently used
Gas switch be difficult to simultaneously realize switch low inductance, low jitter, big through-current capability and long-life.Especially at big electric current
Under, along with the increase of switch discharge number of times, the inductance of switch, shake can be gradually increased, until pulse power supply can not be met
Requirement.
Track switch, owing to being capable of multi-channel discharge, therefore reduces the electric current density of single passage, it is possible to effectively drop
Low switching inductance, raising switch life, and the shake of switch can be controlled in comparatively ideal scope.
Ultraviolet preionization technique can reduce the breakdown voltage of switch, reduces the dispersibility of switch breakdown voltage, contributes to subtracting
Little switch puncture shake, be therefore widely used in the switch of pulse power.
Sword-sword electrode, sword-bar electrode can produce corona during puncturing earlier, provide abundance for gap breakdown
Effective electron, therefore, it is possible to be effectively reduced puncturing time delay, puncturing shake of switch, and can be formed under certain condition
More discharge channel.
Summary of the invention
It is an object of the invention to provide the track switch of a kind of band edge of a knife ultraviolet preionization and trigger circuit.
For reaching above-mentioned purpose, present invention employs techniques below scheme:
A kind of track switch of band edge of a knife ultraviolet preionization, this track switch includes electrode, bottom electrode and trigger electrode,
Upper and lower electrode is symmetricly set in the both sides of trigger electrode, and trigger electrode includes two knife edge electrodes being oppositely arranged, two cuttves
The cross section of mouth electrode is knife-edge, and the knife-edge portion of knife-edge is the isosceles triangle that drift angle is less than 45 degree, two edge of a knife electricity
Interpolar leaves the gap of 0.5mm～2mm, and upper and lower electrode is relative with described gap respectively.
Described track switch also includes the insulation lock chamber with opening and for closing the insulation cover plate of described opening, two
Knife edge electrodes and upper electrode and bottom electrode may be contained within insulating in lock chamber, and two knife edge electrodes and bottom electrode are by conduction
Screw is fixed on insulation lock chamber inwall, and upper electrode is fixed on insulation cover plate by conduction screw, and insulation cover plate is by absolutely
Edge screw is connected with insulation lock chamber.
The gap of 0.5cm～3cm is left between described upper electrode and bottom electrode.
Described upper electrode, bottom electrode and two knife edge electrodes are made by stainless steel material.
The cross section of described upper electrode and bottom electrode is semicircle, and upper electrode and bottom electrode two ends along its length are by half
Tapering transition, two knife edge electrodes two ends rounding along its length.
The triggering circuit of the track switch of above-mentioned band edge of a knife ultraviolet preionization, this triggering circuit includes equalizing resistance, described rail
One knife edge electrodes of road switch is connected with upper electrode and bottom electrode by corresponding equalizing resistance respectively, triggers pulse and passes through
This knife edge electrodes sends into described triggering circuit, between another knife edge electrodes of this knife edge electrodes and described track switch is by illumination
Gap parallel resistance is connected.
Described illumination gap parallel resistance uses 20k Ω～2M Ω resistance.
Described triggering circuit also includes DC high-voltage source, charging resistor, discharge capacity device and load resistance, charging resistor
One end is connected with DC high-voltage source, and the other end of charging resistor is connected with upper electrode, after discharge capacity device is connected with load resistance
It is connected between electrode and bottom electrode, bottom electrode ground connection.
Compared with prior art, the invention have the advantages that
1, in the present invention, trigger electrode uses two panels knife edge electrodes, and knife-edge portion angle is less and be triangle, therefore, tactile
Before Faing, two panels knife edge electrodes can approximate regards a bulk of plate electrode as so that the electric field between main electrode is slightly non-uniform field, can
Reduce electric field distortion.
2, in the present invention when knife edge electrodes spacing is in the range of 0.5mm～2mm, individually trigger voltage is applied at knife edge electrodes
During pulse, multichannel between two panels knife edge electrodes, can be randomly formed.On knife edge electrodes, a tentering is reached in trigger voltage pulse
After value, form multichannel between knife edge electrodes, release ultraviolet, can effectively irradiate the region between switch main electrode, ultraviolet
Before resulting from gap breakdown, it is thus possible to effectively reduce the time delay of switch, shake.
3, form multichannel in the present invention between knife edge electrodes, releasing ultraviolet can produce space ionization, produces space charge,
Make the electric field Severe distortion near knife edge electrodes tip, reduce the amplitude of switch breakdown voltage.
4, the present invention forms multichannel between knife edge electrodes, produce multiple ultraviolet irradiation source, these ultraviolet irradiation source energy
Enough guide and between main electrode, form multichannel, thus effectively reduce the inductance of switch, reduce the electric current of single passage carrying, improve
The through-current capability of switch, extends the life-span of switch.
Accompanying drawing explanation
Fig. 1 is the vertical section structure figure of the track switch of band edge of a knife ultraviolet preionization of the present invention；
Fig. 2 is the cross section structure figure of the track switch of band edge of a knife ultraviolet preionization of the present invention；
Fig. 3 is the side sectional structure chart of the track switch of band edge of a knife ultraviolet preionization of the present invention；
Fig. 4 is the upper and lower electrode structural chart of the track switch of band edge of a knife ultraviolet preionization of the present invention；
Fig. 5 is the knife edge electrodes structure chart of the track switch of band edge of a knife ultraviolet preionization of the present invention；
Fig. 6 is the circuit diagram of the track switch discharge loop of band edge of a knife ultraviolet preionization of the present invention；
Fig. 7 is the circuit diagram of the track switch discharge loop without edge of a knife preionization；
In figure: upper electrode 1, bottom electrode the 2, first knife edge electrodes the 3, second knife edge electrodes 4, insulation lock chamber 5, insulation
Cover plate 6, DC high-voltage source 7, charging resistor 8, discharge capacity device 9, load resistance 10, illumination gap parallel resistance 11,
Equalizing resistance 12, block capacitor 13, triggering pulse 14, dotted box portion is pulser.
Detailed description of the invention
With embodiment, the present invention is elaborated below in conjunction with the accompanying drawings.
Seeing Fig. 1～Fig. 5, the track switch of band edge of a knife ultraviolet preionization of the present invention includes: upper electrode 1, bottom electrode
2, trigger electrode (first knife edge electrodes the 3, second knife edge electrodes 4), insulation lock chamber 5, insulation cover plate 6, wherein, upper,
Bottom electrode is symmetrical set relative to trigger electrode, and the cross section of upper and lower electrode is semicircle, and two ends along its length are passed through
Half-cone transition, the trigger electrode in the middle of upper and lower electrode uses two pieces of knife edge electrodes, and knife edge electrodes cross section is knife-edge, cutter
Oral area is divided into drift angle to be low-angle (less than 45 °) isosceles triangle, and knife edge electrodes spacing is at 0.5mm～2mm, edge of a knife electricity
Pole two ends rounding along its length, all electrodes are fixed on insulation lock chamber 5 and insulating lid by CARBURIZING FURNACE FOR STAINLESS FASTENER correspondence
On plate 6, insulation lock chamber 5 and insulation cover plate 6 are fixed together by nylon screw, and insulation cover plate will insulation lock chamber envelope
Shutting, all electrodes are made by stainless steel material.
Circuit during the track switch regular picture of above-mentioned band edge of a knife ultraviolet preionization as shown in Figure 6, upper electrode 1 and first
It is connected between knife edge electrodes 3, between the first knife edge electrodes 3 and bottom electrode 2 that (equalizing resistance is respectively with equalizing resistance 12
The glaze resistance of resistance 200M Ω), connect by illumination gap parallel resistance 11 between two pieces of knife edge electrodes that (illumination gap is also
Connection resistance is the glaze resistance of resistance 100k Ω), one end of discharge capacity device 9 is connected with upper electrode 1, discharge capacity device
The other end of 9 is connected with bottom electrode 2 by load resistance 10, and DC high-voltage source 7 gives discharge capacity device by charging resistor 8
9 chargings, trigger is connected with the first knife edge electrodes 3 and ground respectively, and the triggering pulse 14 that trigger produces is by every straight electricity
Container 13 is connected with the first knife edge electrodes 3, the second knife edge electrodes 4 ground connection.
Under certain conditions, the trigger electrode of track switch can be stably formed multichannel, and the multichannel of trigger electrode can
Form multichannel with the main gap that ignites (referring to upper/lower electrode gap) electric discharge, switch can be improved while reducing switched inductors
Through-current capability, the life-span of prolongation switch.
Embodiment 1
The present embodiment is the track switch of band edge of a knife ultraviolet preionization, its main electrode shape and knife edge electrodes shape such as Fig. 4,
Shown in Fig. 5, its discharge loop is as shown in Figure 6.Switch main electrode (referring to upper and lower electrode) spacing is 1.2cm, edge of a knife electricity
Die opening is 1mm, and its self-breakdown voltage average is 32kV, and trigger voltage amplitude is 81kV, forward position is 30ns, charged electrical
Resistance is 40M Ω, load resistance 100m Ω, and discharge capacity device size is 80nF.It is respectively when switch main electrode applies voltage
When 10kV, 15kV, 20kV, 25kV, its shake is respectively 1.9ns, 1.2ns, 0.5ns, 0.5ns, and it is average that it is formed
Port number is 4.9,5.2,5.7,6.0.
Embodiment 2
The present embodiment is the track switch of band edge of a knife ultraviolet preionization, its main electrode shape and knife edge electrodes shape such as Fig. 4,
Shown in Fig. 5, its discharge loop is as shown in Figure 6.Switch main electrode distance is 2.2cm, and knife edge electrodes spacing is 1mm, its
Self-breakdown voltage average is 62.6kV, and trigger voltage amplitude is 81kV, forward position is 30ns, and charging resistor is 40M Ω, negative
Carrying resistance 100m Ω, discharge capacity device size is 80nF.It is respectively 18kV, 36kV, 48kV when switch main electrode applies voltage
Time, its shake is respectively 64ns, 4.5ns, 1.4ns, and its average channel number formed is 4.6,5.3,5.7.
Embodiment 3
The present embodiment is the track switch without edge of a knife preionization, its main electrode shape and knife edge electrodes shape such as Fig. 4, Fig. 5
Shown in, its discharge loop is as shown in Figure 7.Switch main electrode distance is 2.2cm, and knife edge electrodes spacing is 1mm, and it is from hitting
Wearing average voltage is 62.6kV, and trigger voltage amplitude is 81kV, forward position is 30ns, and charging resistor is 40M Ω, load electricity
Resistance 100m Ω, discharge capacity device size is 80nF.It is respectively 18kV, 36kV, 48kV when switch main electrode applies voltage
Time, its shake is respectively 170ns, 9ns, 1.5ns.Owing to not using illumination gap parallel resistance 11, there is not knife edge electrodes
Ultraviolet preionization, compared with embodiment 1,2, the shake under low under-voltage ratio is bigger than normal.
Claims (3)
1. the triggering circuit of the track switch of a band edge of a knife ultraviolet preionization, it is characterised in that: this triggering circuit includes
Equalizing resistance (12), a knife edge electrodes of track switch is respectively by corresponding equalizing resistance (12) and upper electrode (1)
And bottom electrode (2) is connected, triggering pulse and send into described triggering circuit by this knife edge electrodes, this knife edge electrodes is with described
Another knife edge electrodes of track switch is connected by illumination gap parallel resistance (11).
The triggering circuit of the track switch of a kind of band edge of a knife ultraviolet preionization, its feature exists
In: described illumination gap parallel resistance (11) uses 20k Ω～2M Ω resistance.
The triggering circuit of the track switch of a kind of band edge of a knife ultraviolet preionization, its feature exists
In: described triggering circuit also includes DC high-voltage source (7), charging resistor (8), discharge capacity device (9) and load electricity
Resistance (10), one end of charging resistor (8) is connected with DC high-voltage source (7), the other end of charging resistor (8) with power on
Pole (1) is connected, and discharge capacity device (9) is connected with load resistance (10) and is followed by upper electrode (1) and bottom electrode (2)
Between, bottom electrode (2) ground connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023271.3A CN104617489B (en) | 2015-01-16 | 2015-01-16 | Track switch with edge of a knife ultraviolet preionization and triggering circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510023271.3A CN104617489B (en) | 2015-01-16 | 2015-01-16 | Track switch with edge of a knife ultraviolet preionization and triggering circuit thereof |
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| Publication Number | Publication Date |
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| CN104617489A CN104617489A (en) | 2015-05-13 |
| CN104617489B true CN104617489B (en) | 2017-01-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113745974B (en) * | 2021-08-06 | 2022-12-09 | 西安交通大学 | Four-electrode self-triggering sharpening gas switch |
| CN114006270B (en) * | 2021-09-26 | 2023-01-17 | 西北核技术研究所 | Subnanosecond dithering MV-level self-triggering switch |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10129139A1 (en) * | 2001-06-16 | 2003-01-09 | Abb Patent Gmbh | Device for quenching arc in switching system, has closable contact point with contact pieces, and intermediate electrode with trigger electrode protruding into its central opening |
| CN202394750U (en) * | 2011-12-24 | 2012-08-22 | 广东汇网电气有限公司 | Durable high-voltage switch |
| CN202856146U (en) * | 2012-10-22 | 2013-04-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Multichannel gas spark switch based on ultraviolet pre-ionization technology |
| CN103326246A (en) * | 2013-05-27 | 2013-09-25 | 国家电网公司 | Three-electrode multi-channel gas spark 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 |
| CN103490283A (en) * | 2013-08-27 | 2014-01-01 | 西北核技术研究所 | Square gas switch with multiple gaps connected in parallel and discharge circuit comprising same |
-
2015
- 2015-01-16 CN CN201510023271.3A patent/CN104617489B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10129139A1 (en) * | 2001-06-16 | 2003-01-09 | Abb Patent Gmbh | Device for quenching arc in switching system, has closable contact point with contact pieces, and intermediate electrode with trigger electrode protruding into its central opening |
| CN202394750U (en) * | 2011-12-24 | 2012-08-22 | 广东汇网电气有限公司 | Durable high-voltage switch |
| CN202856146U (en) * | 2012-10-22 | 2013-04-03 | 云南电力试验研究院（集团）有限公司电力研究院 | Multichannel gas spark switch based on ultraviolet pre-ionization technology |
| CN103326246A (en) * | 2013-05-27 | 2013-09-25 | 国家电网公司 | Three-electrode multi-channel gas spark switch |
| CN103490283A (en) * | 2013-08-27 | 2014-01-01 | 西北核技术研究所 | Square gas switch with multiple gaps connected in parallel and discharge circuit comprising same |
| CN103441427A (en) * | 2013-09-09 | 2013-12-11 | 西安交通大学 | Multichannel gas spark switch applying plasma synthesis jet trigger technology |
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Application publication date: 20150513 Assignee: Tongda Siyuan Electrical Appliance Co., Ltd., Xi'an Assignor: Xi'an Jiaotong University Contract record no.: 2017610000010 Denomination of invention: Ultraviolet preionization track switch with tool edge and trigger circuit of track switch Granted publication date: 20170104 License type: Exclusive License Record date: 20170414 |
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