CN204497566U - The pseudospark switch that a kind of creeping discharge triggers - Google Patents
The pseudospark switch that a kind of creeping discharge triggers Download PDFInfo
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- CN204497566U CN204497566U CN201520080658.8U CN201520080658U CN204497566U CN 204497566 U CN204497566 U CN 204497566U CN 201520080658 U CN201520080658 U CN 201520080658U CN 204497566 U CN204497566 U CN 204497566U
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Abstract
The utility model discloses the pseudospark switch that a kind of creeping discharge triggers, and this pseudospark switch comprises creeping discharge trigger architecture, and described creeping discharge trigger architecture comprises insulation board, triggers material and pair of electrodes; Described pair of electrodes respectively axial sleeve triggers the two ends of material; Sleeve has the triggering material of electrode to be positioned on insulation board; Described triggering material is microwave ceramic material.After adopting this novel creeping discharge trigger architecture, the trigger energy needed for pseudospark switch reduces greatly; Meanwhile, the consistency that pseudospark switch triggers and stability obtain significant lifting, reduce the contaminated degree being subject to ablation and insulating material of electrode material, improve reliability and the life-span of pseudospark switch.
Description
Technical field
The utility model relates to technical field of pulse power.More specifically, the pseudospark switch that a kind of creeping discharge for the formation of high voltage, big current, highpowerpulse triggers is related to.
Background technology
Domestic developed pseudospark switch, the materials such as usual employing aluminium oxide ceramics or semiconductor oxide zinc trigger, by the mode of creeping discharge, the energy of triggering signal is used for the hydrogen ionizing switch internal, thus switch motion has been lighted a fire to switch anode, final output has the high power pulse of certain repetition rate, for controllable nuclear fusion, electromagnetic pulse weapon, flashlight radiation is taken a picture, high power laser, directed beams energy weapon, magneform system, large-scale Marx device, radar, accelerator, in the high power pulse fields such as special power supply.
There is following problem in the pseudospark switch that the creeping discharge of current domestic employing triggers:
1) the creeping discharge trigger architecture of switch adopts stainless steel thin slice to insulate as materials such as electrode, aluminium oxide ceramics or semiconductor oxide zinc.The electron emissivity of stainless steel thin slice and resistance to particle bombardment poor performance, by easily ablated during larger trigger energy, and itself and trigger the contact of material and loosely easily cause the consistency of switch triggering performance poor.
2) for reducing trigger energy, improve the performance of pseudospark switch, the discharging gap size that aluminium oxide ceramics or semiconductor oxide zinc etc. are formed for the material insulated is less than 5mm usually.When output high-power pulse, due to too small gap and plane insulation system, cause insulating material easily the metallic particles attachment that produces by switch discharge with pollute, thus cannot stablize and work reliably.
3) the hydrogen generation reduction reaction of semiconductor oxide zinc easily and in switch, causes the insulation function of material to lose efficacy, and causes pseudospark switch cannot triggered as normal.
4) when applying higher trigger energy on semiconductor oxide Zinc material, and the disturbing pulse formed during the pulse of switch output high-power all can cause puncturing of material, the ability of materials withstand particle bombardment is largely poor in the course of the work simultaneously, thus causes the semiconductor oxide Zinc material life-span to be had a strong impact on.
The problems referred to above not only have influence on the triggering performance of pseudospark switch, job stability, consistency, reliability and life-span, and seriously constrain the application of pseudospark switch in high power pulse field.
Utility model content
An object of the present utility model is the pseudospark switch providing a kind of creeping discharge to trigger.Pseudospark switch of the present utility model have employed the novel creeping discharge trigger architecture of axial symmetry cambered surface insulating structure design and adopts microwave ceramic material as triggering material.Microwave ceramic material not easily with hydrogen generation reduction reaction, there is higher relative dielectric constant and certain resistivity, the discharging gap size formed in pseudospark switch is greater than 10mm, resistance is worn with anti-bombardment ability strong, can be used for solving pseudospark switch trigger energy too high, trigger that material lifetime is short, problem such as work consistency and poor stability etc.
For achieving the above object, the utility model adopts following technical proposals:
The pseudospark switch that creeping discharge triggers, this pseudospark switch comprises creeping discharge trigger architecture, and described creeping discharge trigger architecture comprises insulation board, triggers material and pair of electrodes,
Described pair of electrodes respectively axial sleeve triggers the two ends of material;
Sleeve has the triggering material of electrode to be positioned on insulation board;
Described triggering material is microwave ceramic material.
Preferably, described triggering material is cylinder, and the diameter of described triggering material is 4-10mm;
Preferably, the wall thickness of described electrode is 2-4mm.
Preferably, described triggering material shaft is 2-5mm to the degree of depth of the described electrode of embedding.
Preferably, this discharging gap formed electrode is 11 ~ 15mm.
Preferably, this microwave ceramic material comprises aluminium nitride, aluminium oxide or forsterite; Carborundum or carbon nano-tube, its relative dielectric constant is ε
r=30 ~ 50, resistivity is ρ ≌ 10
5Ω m.
The microwave ceramic material that triggering material of the present utility model adopts is disclosed in Chinese patent CN102515773A, and this microwave ceramic material comprises aluminium nitride, aluminium oxide or forsterite; Carborundum or carbon nano-tube.Its relative dielectric constant ε
r=30 ~ 50, be greater than aluminium oxide ceramics and semiconductor oxide Zinc material, therefore formed discharging gap size d=11 ~ 15mm, adopts axial symmetry cambered surface insulating structure design simultaneously, make material not easily the metallic particles attachment that produces by switch discharge with pollute; Its electricalresistivityρ ≌ 10
5Ω m, can consume the mode of the portion of energy in creeping discharge process by surface current, thus weakens creeping discharge to the ablation triggering material, ensures also to affect the life-span of triggering material structure and pseudospark switch when trigger energy is larger.
The mechanical performance of microwave ceramic material is excellent, high temperature resistant and particle bombardment, and has certain insulating capacity, and trigger energy required when therefore adopting this material to carry out creeping discharge is little, consistency good, Stability and dependability is excellent.
Preferably, the sleeve triggering material described in described electrode pair is interference tolerance fit.The sleeve of electrode pair microwave ceramic material takes interference tolerance fit, make to contact firmly between the two, the consistency of switch triggering performance is good, through dependence test, adopt the pseudospark switch of this trigger architecture, reliable trigger in life cycle reaches more than 98%, and the triggered time beats and is less than 20ns.
Preferably, described electrode has axially symmetric structure.
Preferably, described electrode is oxygen-free copper electrode.Oxygen-free copper electrodic electron emissivities and resistance to particle bombardment performance by force, not easily ablation, creeping discharge trigger time its electron emission area much larger than current structure, reduce the energy required for switch triggering.
Preferably, described insulation board is aluminium oxide ceramics.
The beneficial effects of the utility model are as follows:
Pseudospark switch of the present utility model have employed the novel creeping discharge trigger architecture of axial symmetry cambered surface insulating structure design and adopts microwave ceramic material as triggering material, the trigger impulse voltage peak of pseudospark switch is reduced to 2 current ~ 3kV by 6 ~ 10kV before, trigger impulse current peak is reduced to current 40A by 160A before, greatly reduces the trigger energy needed for switch; Meanwhile, the consistency of switch triggering and stability obtain significant lifting, reduce the contaminated degree being subject to ablation and insulating material of electrode material, substantially increase reliability and the life-span of pseudospark switch.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 illustrates pseudospark switch primary structure schematic diagram.
Fig. 2 illustrates the creeping discharge trigger architecture of pseudospark switch in prior art.
Fig. 3 illustrates the creeping discharge trigger architecture of the utility model pseudospark switch.
Fig. 4 A-4B illustrates that the utility model creeping discharge trigger architecture forms.
Embodiment
In order to be illustrated more clearly in the utility model, below in conjunction with preferred embodiments and drawings, the utility model is described further.Parts similar in accompanying drawing represent with identical Reference numeral.It will be appreciated by those skilled in the art that specifically described content is illustrative and nonrestrictive below, protection range of the present utility model should do not limited with this.
Embodiment
Pseudospark switch primary structure is as shown in Figure 1: comprise anode 1, hollow cathode 2, insulating ceramics 3, trigger architecture 4, hydrogen reservoir 5.
Wherein creeping discharge trigger architecture 4 used in the prior art as shown in Figure 2: comprise insulation board 6, and the triggering material 7 be arranged on insulation board 6 and electrode 8.
Usual insulation board of the prior art 6 adopts aluminium oxide ceramics, and trigger material 7 and adopt semiconductor oxide Zinc material, electrode 8 adopts stainless steel thin slice.This creeping discharge trigger architecture is too simple, the electron emissivity of stainless steel thin slice and resistance to particle bombardment poor performance, and by easily ablated during larger trigger energy, and the contact of itself and triggering material loosely easily causes the consistency of switch triggering performance poor.The discharging gap size that the materials such as aluminium oxide ceramics or semiconductor oxide zinc are formed is less than 5mm, when output high-power pulse, due to too small spacing and planar insulative structure, cause material easily the metallic particles attachment that produces by switch discharge with pollute, thus cannot stablize and work reliably.And the hydrogen generation reduction reaction of semiconductor oxide zinc easily and in switch, causes the disabler of material, also easily causes puncturing of material, have a strong impact on useful life when high power uses.
Fig. 3 is the creeping discharge trigger architecture of the utility model pseudospark switch, as shown in the figure, comprises insulation board 6, and the triggering material 7 be arranged on insulation board 6 and electrode 8; There is electrode 8 at triggering material 7 two ends respectively axial sleeve.Triggering material 7 is microwave ceramic material; Electrode 8 is oxygen-free copper electrode; Insulation board 6 is aluminium oxide ceramics.Electrode 8 takes interference tolerance fit to the sleeve triggering material 7, and electrode 8 has axially symmetric structure.
Fig. 4 is the utility model creeping discharge trigger architecture composition: electrode (Fig. 4 A) and microwave ceramics trigger material (Fig. 4 B).As shown in the figure, the axial diameter triggering material is 8mm; Electrode is 14mm with the external diameter of the anchor ring triggering material sleeve, and internal diameter is 8mm, electrode wall thickness 3mm; Triggering material shaft is 3mm to the degree of depth of intercalation electrode.The discharging gap that electrode and triggering material are formed simultaneously is of a size of 11 ~ 15mm.
Pseudospark switch of the present utility model have employed novel creeping discharge trigger architecture, adopt microwave ceramic material as triggering material, the microwave ceramic material used not easily with hydrogen generation reduction reaction, there is higher relative dielectric constant and certain resistivity, the discharging gap size formed is greater than 10mm, resistance is worn with anti-bombardment ability strong, can be used for solving pseudospark switch trigger energy too high, trigger that material lifetime is short, problem such as work consistency and poor stability etc.
The concrete preparation process of the utility model pseudospark switch is as follows:
1) oxygen-free copper and microwave ceramic material are processed by Fig. 4 A and 4B illustrated dimension, suppress novel creeping discharge trigger architecture by auxiliary mould.
2) will go between and screw soldering, then be connected and fixed with the screwed hole of M3 on oxygen-free copper electrode.
3) novel creeping discharge trigger architecture is arranged on pseudospark switch inside by lead-in wire.
Obviously; above-described embodiment of the present utility model is only for the utility model example is clearly described; and be not the restriction to execution mode of the present utility model; for those of ordinary skill in the field; can also make other changes in different forms on the basis of the above description; here cannot give exhaustive to all execution modes, every belong to the technical solution of the utility model the apparent change of extending out or variation be still in the row of protection range of the present utility model.
Claims (10)
1. a pseudospark switch for creeping discharge triggering, this pseudospark switch comprises creeping discharge trigger architecture, and described creeping discharge trigger architecture comprises insulation board, triggers material and pair of electrodes, it is characterized in that:
Described pair of electrodes respectively axial sleeve triggers the two ends of material;
Sleeve has the triggering material of electrode to be positioned on insulation board;
Described triggering material is microwave ceramic material.
2. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, it is characterized in that: described triggering material is cylinder, the diameter of described triggering material is 4-10mm.
3. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: the wall thickness of described electrode is 2-4mm.
4. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: described triggering material shaft is 2-5mm to the degree of depth of the described electrode of embedding.
5. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: this discharging gap formed electrode is 11 ~ 15mm.
6. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: the sleeve triggering material described in described electrode pair is interference tolerance fit.
7. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: described electrode has axially symmetric structure.
8. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: described electrode is oxygen-free copper electrode.
9. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: described insulation board is aluminium oxide ceramics.
10. the pseudospark switch of a kind of creeping discharge triggering according to claim 1, is characterized in that: this microwave ceramic material comprises aluminium nitride, aluminium oxide or forsterite; Carborundum or carbon nano-tube, its relative dielectric constant is ε
r=30 ~ 50, resistivity is ρ ≌ 10
5Ω m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080658.8U CN204497566U (en) | 2015-02-04 | 2015-02-04 | The pseudospark switch that a kind of creeping discharge triggers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520080658.8U CN204497566U (en) | 2015-02-04 | 2015-02-04 | The pseudospark switch that a kind of creeping discharge triggers |
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Cited By (2)
| 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 |
| CN113121206A (en) * | 2019-12-30 | 2021-07-16 | 辽宁省轻工科学研究院有限公司 | Preparation method of inner wall ceramic coating for pseudo spark switch |
-
2015
- 2015-02-04 CN CN201520080658.8U patent/CN204497566U/en active Active
Cited By (3)
| 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 |
| CN113121206A (en) * | 2019-12-30 | 2021-07-16 | 辽宁省轻工科学研究院有限公司 | Preparation method of inner wall ceramic coating for pseudo spark switch |
| CN113121206B (en) * | 2019-12-30 | 2023-08-22 | 辽宁省轻工科学研究院有限公司 | Preparation method of inner wall ceramic coating for pseudo spark switch |
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