CN102437512B - Gas switch - Google Patents
Gas switch Download PDFInfo
- Publication number
- CN102437512B CN102437512B CN 201110267365 CN201110267365A CN102437512B CN 102437512 B CN102437512 B CN 102437512B CN 201110267365 CN201110267365 CN 201110267365 CN 201110267365 A CN201110267365 A CN 201110267365A CN 102437512 B CN102437512 B CN 102437512B
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- China
- Prior art keywords
- gas switch
- metal sleeve
- electrode
- bottom electrode
- sleeve
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Abstract
The invention discloses a gas switch which comprises an upper electrode, a lower electrode, an insulating sleeve and a metal sleeve, wherein the upper electrode and the lower electrode are prepared from a high-intensity graphite material and are symmetrically arranged axially; the lower part of the upper electrode, the upper part of the lower electrode and the upper part of the metal sleeve are all subjected to rounding-off treatment; the insulating sleeve is tightly sleeved at the external part of the lower electrode; the height of the insulating sleeve is lower than that of the lower electrode; the metal sleeve is tightly sleeved on the external part of the insulating sleeve, and the height of the metal sleeve is basically identical to that of the lower electrode. The metal sleeve tightly leans on the external part of the insulating sleeve, thus the problem of the declining of conducting performance of the gas switch caused by severe ablation of the lower electrode is avoided, and at the same time, the service life of the gas switch is prolonged; and additionally, a groove formed between the lower electrode and the metal sleeve can enable plasmas to move towards the direction of the upper electrode, thus the breakdown and conducting performances of the gas switch are ensured effectively.
Description
Technical field
The present invention relates to a kind of gas switch.
Background technology
Gas switch is as a kind of pulse power switch commonly used, have that response is fast, loss is little, bear the voltage height, conduction current is large, stability is high, inductance and shake is low, operating voltage is easy to adjust, firm, the advantage such as cost is low simple in structure, therefore in high voltage electrical technology field and Pulse Power Techniques field, be widely used.
Yet existing gas switch exists following problem: under large current lead-through condition, and the inhomogeneous situation of trigger electrode meeting ablation, this can affect conduction property and the useful life of gas switch, and has increased maintenance cost.
Summary of the invention
The object of the invention is to provide a kind of gas switch, and it can solve the problems of the technologies described above.
A kind of gas switch, comprise top electrode, bottom electrode, insulating sleeve, metal sleeve, it is characterized in that: top electrode and bottom electrode are axially and are symmetrical arranged, process through rounding on the bottom of top electrode and the top of bottom electrode, the top edge of metal sleeve bends outwards into U-shaped, and insulating sleeve is tightly placed in the outside of bottom electrode, and the height of insulating sleeve is less than the height of bottom electrode, metal sleeve is tightly placed in the outside of insulating sleeve, and the height of metal sleeve and the height of bottom electrode are basic identical.
Insulating sleeve is to be made by the strong macromolecular material of insulation property.
Insulating sleeve is to be made by epoxy resin or bakelite.
Metal sleeve be by conduct electricity very well, resistant to elevated temperatures metal material makes.
Metal sleeve is to be made by copper, tungsten alloy or stainless steel.
Form groove between metal sleeve and the bottom electrode.
Top electrode and bottom electrode are cylinder.
Between metal sleeve and the bottom electrode, very close to each other between metal sleeve and the insulating sleeve.
Top electrode and bottom electrode are to be made by high-density graphite material.
Compared with prior art, there is following advantage in gas switch of the present invention:
1. metal sleeve abuts against the outside of insulating sleeve, thereby the problem that the gas switch conduction property that causes of having avoided ablating because bottom electrode is serious descends has prolonged useful life of gas switch simultaneously.
2. process through rounding on the top of the bottom of top electrode and bottom electrode, makes to form approximate uniform electric field between top electrode and the bottom electrode, effectively prevents electric field distortion.
3. the top edge of metal sleeve bends outwards into U-shaped, forms the electric field non-uniform areas in the time of can preventing from applying voltage between top electrode and bottom electrode, thereby has improved the gas switch performance.
4. the groove that forms between bottom electrode and the metal sleeve can allow make progress electrode direction motion of plasma, thereby effectively guarantees puncture and the conduction property of gas switch.
Description of drawings
Fig. 1 is the cutaway view of gas switch of the present invention.
Fig. 2 is the vertical view of gas switch of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1 and Figure 2, gas switch of the present invention comprises metal sleeve 1, bottom electrode 2, insulating sleeve 3 and top electrode 4.
Process through rounding on the top of the bottom of top electrode 4 and bottom electrode 2, makes to form approximate uniform electric field between top electrode 4 and the bottom electrode 2, effectively prevents electric field distortion.
Insulating sleeve 3 is tightly placed in the outside of bottom electrode 2, and the height of insulating sleeve 3 is less than the height of bottom electrode 2.
Insulating sleeve is by the strong macromolecular material of insulation property, makes such as epoxy resin or bakelite etc.
Metal sleeve be by conduct electricity very well, resistant to elevated temperatures metal material, such as copper, tungsten alloy or stainless steel etc. made.
In the present embodiment, top electrode 4, bottom electrode 2 are cylinder, and the height of the two is 40mm, and diameter is 80mm, and the height of insulating sleeve 3 is 25mm, and thickness is 6mm.
Between metal sleeve 1 and the bottom electrode 2, very close to each other between metal sleeve 1 and the insulating sleeve 3.
Process through rounding on the top of metal sleeve 1, formation electric field pole non-uniform areas when preventing that 2 of top electrode 4 and bottom electrodes from applying voltage and affect switch performance.
Operation principle of the present invention is as follows: when work, apply certain voltage between top electrode 4 and bottom electrode 2 by charging device, make and form certain electric field between the two, when trigger impulse voltage is put on metal sleeve 1, the gas gap of groove is breakdown between metal sleeve 1 and the bottom electrode 2, thereby form a large amount of charged particles, and under the effect of Lorentz force, move to the groove outside direction, charged particle moves to top electrode 4 under the effect of electric field between top electrode 4 and the bottom electrode 2, and then between top electrode 4 and bottom electrode 2, form the streamer passage that runs through by the evolution of streamer in the streamer theory, thereby cause the switch main gap to puncture.Because bottom electrode 2 discharges with metal sleeve 1 when applying trigger impulse voltage, this moment, the ablated area of discharging was the side of bottom electrode 2 and the inboard of metal sleeve 1, avoided traditional triggering pin type three electrode switch problem the problem includes:, trigger the serious ablation of pin and affect the gas switch conduction property and shorten the gas switch problem in useful life; Simultaneously, the plasma that the side of bottom electrode 2 and metal sleeve 1 produce when discharge occurs is along groove to external movement, under the effect of electric field, move to top electrode 4 rapidly, form fast the discharge channel that runs through top electrode 4 and bottom electrode 2, can effectively guarantee the puncture of switch.
Claims (9)
1. gas switch, comprise top electrode, bottom electrode, insulating sleeve, metal sleeve, it is characterized in that: described top electrode and described bottom electrode are axially and are symmetrical arranged, process through rounding on the bottom of described top electrode and the top of described bottom electrode, the top edge of described metal sleeve bends outwards into U-shaped, described insulating sleeve is tightly placed in the outside of described bottom electrode, the height of described insulating sleeve is less than the height of described bottom electrode, described metal sleeve is tightly placed in the outside of described insulating sleeve, and the height of described metal sleeve and the height of described bottom electrode are basic identical.
2. gas switch according to claim 1, it is characterized in that: described insulating sleeve is to be made by the strong macromolecular material of insulation property.
3. gas switch according to claim 1 and 2, it is characterized in that: described insulating sleeve is to be made by epoxy resin or bakelite.
4. gas switch according to claim 1 is characterized in that: described metal sleeve be by conduct electricity very well, resistant to elevated temperatures metal material makes.
5. gas switch according to claim 1 and 2, it is characterized in that: described metal sleeve is to be made by copper, tungsten alloy or stainless steel.
6. gas switch according to claim 1 is characterized in that: form groove between described metal sleeve and the described bottom electrode.
7. gas switch according to claim 1, it is characterized in that: described top electrode and described bottom electrode are cylinder.
8. gas switch according to claim 1 is characterized in that: between described metal sleeve and the described bottom electrode, very close to each other between described metal sleeve and the described insulating sleeve.
9. gas switch according to claim 1, it is characterized in that: described top electrode and described bottom electrode are to be made by high-density graphite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267365 CN102437512B (en) | 2011-09-09 | 2011-09-09 | Gas switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110267365 CN102437512B (en) | 2011-09-09 | 2011-09-09 | Gas switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102437512A CN102437512A (en) | 2012-05-02 |
| CN102437512B true CN102437512B (en) | 2013-02-13 |
Family
ID=45985436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110267365 Expired - Fee Related CN102437512B (en) | 2011-09-09 | 2011-09-09 | Gas switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102437512B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108426490A (en) * | 2018-06-01 | 2018-08-21 | 徐佳伟 | A kind of environmental protection fuel gas firecrackers |
| CN113555773B (en) * | 2021-07-08 | 2022-07-05 | 中国人民解放军国防科技大学 | Self-breakdown high-voltage gas switch based on surface modified graphite electrode |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2815136C2 (en) * | 1978-04-06 | 1986-01-02 | Siemens AG, 1000 Berlin und 8000 München | Contact arrangement for pressure gas switch |
| US4475055A (en) * | 1982-01-28 | 1984-10-02 | The United States Of America As Represented By The United States Department Of Energy | Spark gap device for precise switching |
| DE4204529A1 (en) * | 1992-02-15 | 1993-08-19 | Asea Brown Boveri | DISCONNECTOR FOR A METAL-ENCLOSED GAS-INSULATED HIGH-VOLTAGE SYSTEM |
| DE4427163A1 (en) * | 1994-08-01 | 1996-02-08 | Abb Management Ag | Gas pressure switch |
| US20070297479A1 (en) * | 2006-06-22 | 2007-12-27 | Bio-Rad Laboratories | Triggered spark gap |
| CN101577396B (en) * | 2009-06-12 | 2012-05-23 | 西安交通大学 | Two-electrode spark gap gas switch |
| CN101783480B (en) * | 2010-03-22 | 2012-09-05 | 华中科技大学 | Two-electrode gas spark switch |
| CN101777730B (en) * | 2010-04-09 | 2012-05-23 | 华中科技大学 | Designing method of graphite electrode of high energy pulse gas switch |
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2011
- 2011-09-09 CN CN 201110267365 patent/CN102437512B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102437512A (en) | 2012-05-02 |
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Granted publication date: 20130213 Termination date: 20200909 |
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| CF01 | Termination of patent right due to non-payment of annual fee |