CN104617489A - Ultraviolet preionization track switch with tool edge and trigger circuit of track switch - Google Patents
Ultraviolet preionization track switch with tool edge and trigger circuit of track switch Download PDFInfo
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- CN104617489A CN104617489A CN201510023271.3A CN201510023271A CN104617489A CN 104617489 A CN104617489 A CN 104617489A CN 201510023271 A CN201510023271 A CN 201510023271A CN 104617489 A CN104617489 A CN 104617489A
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Abstract
The invention discloses an ultraviolet preionization track switch with a tool edge and a trigger circuit of the track switch. The ultraviolet preionization track switch comprises an upper electrode, a lower electrode, trigger electrodes, an insulating fixed cavity and an insulating cover plate; the upper and lower electrodes are arranged symmetrically; the middle trigger electrodes are two tool edge electrodes; all the electrodes are fixed on the insulating fixed cavity and the insulating cover plate by use of stainless steel screws; the insulating fixed cavity and the insulating cover plate are fixed together by use of nylon screws. The track switch is capable of stably forming a plurality of channels, and capable of improving the through-current capability of the switch, prolonging the service of the switch and reducing the jittering of the switch while reducing the inductance of the switch.
Description
Technical field
The present invention relates to gas discharge switch and circuits for triggering thereof, particularly one can be used for fast rise time straight pulse transformer driving source (FLTD), the track switch of band edge of a knife ultraviolet preionization of X-Pinch isopulse power device and circuits for triggering thereof.
Background technology
Gas switch, as a kind of conventional pulse power switch, has the advantages such as operating voltage is high, conduction current is large, trigger jitter is low, cost is low, is therefore widely used in high voltage electrical technology field and technical field of pulse power.
As the Typical Representative of high-power pulse source, the devices such as fast rise time straight pulse transformer driving source (FLTD), X-Pinch were had higher requirement to the inductance of gas switch, trigger jitter, through-current capability, life-span.But the gas switch used at present is difficult to the low inductance, the low jitter, greatly through-current capability and long-life that realize switch simultaneously.Especially under big current, along with the increase of switch discharge number of times, inductance, the shake of switch can increase gradually, until can not meet the requirement of pulse power supply.
Track switch, owing to realizing multi-channel discharge, because this reducing the current density of single passage, effectively can reduce switched inductors, improving switch life, and the shake of switch can be controlled in comparatively ideal scope.
Ultraviolet preionization technique can reduce the puncture voltage of switch, reduces the dispersiveness of switch puncture voltage, and what contribute to reduction switch punctures shake, is therefore widely used in the switch of pulse power.
Sword-sword electrode, sword-bar electrode can generation coronas comparatively early in the process punctured, for gap breakdown provides sufficient effective electron, therefore, it is possible to effectively reduce puncturing time delay, puncturing shake of switch, and more discharge channel can be formed under certain condition.
Summary of the invention
The object of the present invention is to provide a kind of track switch with the preionization of edge of a knife ultraviolet and circuits for triggering thereof.
For achieving the above object, present invention employs following technical scheme:
A kind of track switch with the preionization of edge of a knife ultraviolet, this track switch comprises top electrode, bottom electrode and trigger electrode, upper and lower electrode is symmetricly set in the both sides of trigger electrode, trigger electrode comprises two knife edge electrodes be oppositely arranged, the cross section of two knife edge electrodes is knife-edge, the blade portion of knife-edge is divided into drift angle to be less than the isosceles triangle of 45 degree, leaves the gap of 0.5mm ~ 2mm between two knife edge electrodes, and upper and lower electrode is relative with described gap respectively.
Described track switch also comprises with the insulation lock chamber of opening and the insulation cover plate for closing described opening, two knife edge electrodes and top electrode and bottom electrode are all arranged in insulation lock chamber, two knife edge electrodes and bottom electrode are fixed on insulation lock chamber inwall by conduction screw, top electrode is fixed on insulation cover plate by conduction screw, and insulation cover plate is connected with insulation lock chamber by insulating screw.
The gap of 0.5cm ~ 3cm is left between described top electrode and bottom electrode.
Described top electrode, bottom electrode and two knife edge electrodes are made by stainless steel material.
The cross section of described top electrode and bottom electrode is semicircle, and half-cone transition is passed through at top electrode and bottom electrode two ends along its length, two knife edge electrodes two ends rounding along its length.
The circuits for triggering of the track switch of above-mentioned band edge of a knife ultraviolet preionization, these circuits for triggering comprise grading resistor, a knife edge electrodes of described track switch is connected with top electrode and bottom electrode respectively by the grading resistor of correspondence, trigger impulse sends into described circuits for triggering by this knife edge electrodes, and this knife edge electrodes is connected by illumination gap parallel resistance with another knife edge electrodes of described track switch.
Described illumination gap parallel resistance adopts 20k Ω ~ 2M Ω resistance.
Described circuits for triggering also comprise DC high-voltage source, charging resistor, discharging capacitor and load resistance, one end of charging resistor is connected with DC high-voltage source, the other end of charging resistor is connected with top electrode, discharging capacitor is connected between top electrode and bottom electrode after connecting with load resistance, bottom electrode ground connection.
Compared with prior art, the present invention has the following advantages:
1, in the present invention, trigger electrode adopts two panels knife edge electrodes, and edge of a knife part angle is less and be triangle, and therefore, before triggering, two panels knife edge electrodes can be similar to regards a bulk of plate electrode as, makes the electric field between main electrode be slightly non-uniform field, can reduce electric field distortion.
2, in the present invention when knife edge electrodes spacing is within the scope of 0.5mm ~ 2mm, separately knife edge electrodes apply trigger voltage pulse time, can multichannel be randomly formed between two panels knife edge electrodes.After trigger voltage pulse reaches certain amplitude on knife edge electrodes, form multichannel between knife edge electrodes, release ultraviolet, effectively can irradiate the region between switch main electrode, before ultraviolet results from gap breakdown, thus effectively can reduce time delay, the shake of switch.
3, form multichannel in the present invention between knife edge electrodes, releasing ultraviolet can produce space ionization, produce space charge, make the electric field Severe distortion near knife edge electrodes tip, reduce the amplitude of switch puncture voltage.
4, form multichannel between knife edge electrodes in the present invention, produce multiple Ultraviolet radiation source, these Ultraviolet radiation sources can guide between main electrode and form multichannel, thus effectively reduce the inductance of switch, reduce the electric current of single passage carrying, improve the through-current capability of switch, extend 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 of the present invention preionization;
Fig. 2 is the cross section structure figure of the track switch of band edge of a knife ultraviolet of the present invention preionization;
Fig. 3 is the side sectional structure chart of the track switch of band edge of a knife ultraviolet of the present invention preionization;
Fig. 4 is the upper and lower electrode structural chart of the track switch of band edge of a knife ultraviolet of the present invention preionization;
Fig. 5 is the knife edge electrodes structure chart of the track switch of band edge of a knife ultraviolet of the present invention preionization;
Fig. 6 is the circuit diagram of the track switch discharge loop of band edge of a knife ultraviolet of the present invention preionization;
Fig. 7 is the circuit diagram of the track switch discharge loop not with edge of a knife preionization;
In figure: top electrode 1, bottom electrode 2, first knife edge electrodes 3, second knife edge electrodes 4, insulation lock chamber 5, insulation cover plate 6, DC high-voltage source 7, charging resistor 8, discharging capacitor 9, load resistance 10, illumination gap parallel resistance 11, grading resistor 12, block capacitor 13, trigger impulse 14, dotted box portion is pulser.
Embodiment
Below in conjunction with drawings and Examples, the present invention is elaborated.
See Fig. 1 ~ Fig. 5, the track switch of band edge of a knife ultraviolet of the present invention preionization comprises: top electrode 1, bottom electrode 2, trigger electrode (the first knife edge electrodes 3, second knife edge electrodes 4), insulation lock chamber 5, insulation cover plate 6, wherein, on, the relative trigger electrode of bottom electrode is symmetrical set, on, the cross section of bottom electrode is semicircle, and two ends are along its length by half-cone transition, on, trigger electrode in the middle of bottom electrode adopts two pieces of knife edge electrodes, knife edge electrodes cross section is knife-edge, blade portion is divided into drift angle to be low-angle (being less than 45 °) isosceles triangle, knife edge electrodes spacing is at 0.5mm ~ 2mm, knife edge electrodes two ends rounding along its length, all electrodes are fixed on insulation lock chamber 5 and insulation cover plate 6 by CARBURIZING FURNACE FOR STAINLESS FASTENER correspondence, insulation lock chamber 5 and insulation cover plate 6 are fixed together by nylon screw, insulation lock chamber is closed by insulation cover plate, 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, between top electrode 1 and the first knife edge electrodes 3, first knife edge electrodes 3 is connected (glaze resistance that grading resistor is resistance 200M Ω) with grading resistor 12 respectively with between bottom electrode 2, connect (glaze resistance that illumination gap parallel resistance is resistance 100k Ω) by illumination gap parallel resistance 11 between two pieces of knife edge electrodes, one end of discharging capacitor 9 is connected with top electrode 1, the other end of discharging capacitor 9 is connected with bottom electrode 2 by load resistance 10, DC high-voltage source 7 charges to discharging capacitor 9 by charging resistor 8, trigger is connected with the first knife edge electrodes 3 and ground respectively, the trigger impulse 14 that trigger produces is connected with the first knife edge electrodes 3 by block capacitor 13, second knife edge electrodes 4 ground connection.
Under certain conditions, the trigger electrode of track switch stably can form multichannel, main gap (the referring to upper/lower electrode gap) electric discharge of can igniting of the multichannel of trigger electrode forms multichannel, can improve the through-current capability of switch, extends the life-span of switch while reducing switched inductors.
Embodiment 1
The present embodiment is the track switch of band edge of a knife ultraviolet preionization, and as shown in Figure 4, Figure 5, its discharge loop as shown in Figure 6 for its main electrode shape and knife edge electrodes shape.Switch main electrode (referring to upper and lower electrode) spacing is 1.2cm, and knife edge electrodes spacing is 1mm, and its self-breakdown voltage average is 32kV, trigger voltage amplitude is 81kV, forward position is 30ns, charging resistor is 40M Ω, load resistance 100m Ω, and discharging capacitor size is 80nF.When switch main electrode applying voltage is respectively 10kV, 15kV, 20kV, 25kV, its shake is respectively 1.9ns, 1.2ns, 0.5ns, 0.5ns, and its average channel number formed 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, and as shown in Figure 4, Figure 5, its discharge loop as shown in Figure 6 for its main electrode shape and knife edge electrodes shape.Switch main electrode distance is 2.2cm, and knife edge electrodes spacing is 1mm, and its self-breakdown voltage average is 62.6kV, and trigger voltage amplitude is 81kV, forward position is 30ns, and charging resistor is 40M Ω, load resistance 100m Ω, and discharging capacitor size is 80nF.When switch main electrode applying voltage is respectively 18kV, 36kV, 48kV, 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 not with edge of a knife preionization, and as shown in Figure 4, Figure 5, its discharge loop as shown in Figure 7 for its main electrode shape and knife edge electrodes shape.Switch main electrode distance is 2.2cm, and knife edge electrodes spacing is 1mm, and its self-breakdown voltage average is 62.6kV, and trigger voltage amplitude is 81kV, forward position is 30ns, and charging resistor is 40M Ω, load resistance 100m Ω, and discharging capacitor size is 80nF.When switch main electrode applying voltage is respectively 18kV, 36kV, 48kV, its shake is respectively 170ns, 9ns, 1.5ns.Owing to not using illumination gap parallel resistance 11, there is not the preionization of knife edge electrodes ultraviolet, compared with embodiment 1,2, the shake under low under-voltage ratio is obviously bigger than normal.
Claims (8)
1. the track switch with the preionization of edge of a knife ultraviolet, it is characterized in that: this track switch comprises top electrode (1), bottom electrode (2) and trigger electrode, upper and lower electrode is symmetricly set in the both sides of trigger electrode, trigger electrode comprises two knife edge electrodes be oppositely arranged, the cross section of two knife edge electrodes is knife-edge, the blade portion of knife-edge is divided into drift angle to be less than the isosceles triangle of 45 degree, leave the gap of 0.5mm ~ 2mm between two knife edge electrodes, upper and lower electrode is relative with described gap respectively.
2. a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 1, it is characterized in that: described track switch also comprises with the insulation lock chamber (5) of opening and the insulation cover plate (6) for closing described opening, two knife edge electrodes and top electrode (1) and bottom electrode (2) are all arranged in insulation lock chamber (5), two knife edge electrodes and bottom electrode (2) are fixed on insulation lock chamber (5) inwall by conduction screw, top electrode (1) is fixed on insulation cover plate (6) by conduction screw, insulation cover plate (6) is connected with insulation lock chamber (5) by insulating screw.
3. a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 1, is characterized in that: the gap leaving 0.5cm ~ 3cm between described top electrode (1) and bottom electrode (2).
4. a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 1, is characterized in that: described top electrode (1), bottom electrode (2) and two knife edge electrodes are made by stainless steel material.
5. a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 1, it is characterized in that: the cross section of described top electrode (1) and bottom electrode (2) is for semicircle, half-cone transition is passed through, the two ends rounding of two knife edge electrodes in the two ends of top electrode and bottom electrode.
6. be with the circuits for triggering of the track switch of edge of a knife ultraviolet preionization as claimed in claim 1 for one kind, it is characterized in that: these circuits for triggering comprise grading resistor (12), a knife edge electrodes of described track switch is connected with top electrode (1) and bottom electrode (2) respectively by the grading resistor (12) of correspondence, trigger impulse sends into described circuits for triggering by this knife edge electrodes, and this knife edge electrodes is connected by illumination gap parallel resistance (11) with another knife edge electrodes of described track switch.
7. the circuits for triggering of a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 6, is characterized in that: described illumination gap parallel resistance (11) adopts 20k Ω ~ 2M Ω resistance.
8. the circuits for triggering of a kind of track switch with the preionization of edge of a knife ultraviolet according to claim 6, it is characterized in that: described circuits for triggering also comprise DC high-voltage source (7), charging resistor (8), discharging capacitor (9) and load resistance (10), one end of charging resistor (8) is connected with DC high-voltage source (7), the other end of charging resistor (8) is connected with top electrode (1), discharging capacitor (9) is connected to after connecting with load resistance (10) between top electrode (1) and bottom electrode (2), bottom electrode (2) ground connection.
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| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| 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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| CN104617489A true CN104617489A (en) | 2015-05-13 |
| CN104617489B CN104617489B (en) | 2017-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745974A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Four-electrode self-triggering sharpening gas switch |
| CN114006270A (en) * | 2021-09-26 | 2022-02-01 | 西北核技术研究所 | Subnanosecond dithering MV-level self-triggering switch |
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| 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 |
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2015
- 2015-01-16 CN CN201510023271.3A patent/CN104617489B/en active Active
Patent Citations (6)
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| 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 |
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| 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 (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113745974A (en) * | 2021-08-06 | 2021-12-03 | 西安交通大学 | Four-electrode self-triggering sharpening gas switch |
| CN114006270A (en) * | 2021-09-26 | 2022-02-01 | 西北核技术研究所 | Subnanosecond dithering MV-level self-triggering switch |
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| CN104617489B (en) | 2017-01-04 |
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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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