CN201904538U - Coaxial shielding type gas spark switch - Google Patents
Coaxial shielding type gas spark switch Download PDFInfo
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- CN201904538U CN201904538U CN2010205611776U CN201020561177U CN201904538U CN 201904538 U CN201904538 U CN 201904538U CN 2010205611776 U CN2010205611776 U CN 2010205611776U CN 201020561177 U CN201020561177 U CN 201020561177U CN 201904538 U CN201904538 U CN 201904538U
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Abstract
The utility model discloses a coaxial shielding type high-pressure gas spark switch. A gas spark switch, which has a coaxial structure, is triggered by a double-gap transverse needle and is controlled and triggered by an electric pulse, is designed according to the characteristic impedance matching principle. An energy storage capacitor can be arranged in the gas spark switch, so as to be beneficial for reducing the inductance, compacting the structure and quickening the rising edge of the pulse. Therefore, the problem of shielding, supporting and grounding is solved, and the gas spark switch is convenient to be in transition connection with the coaxial cable at the same time. With the adoption of the trigger structure of the double-gap transverse needle, the electric field in the switch and the trigger position are convenient to adjust, and the problem that the main pulse is blocked up through a trigger electrode is solved, so that the positive and negative pulses are triggered and produced at the same time. The gas park switch is applicable to a transfer switch for producing high peak and quick and advanced electric pulse.
Description
Technical field
The utility model is the gas spark switch that a kind of double gap transverse pin of coaxial configuration triggers, and its structure is optimized also and load matched, is applicable to the generation of peak value, fast forward position electric pulse.
Background technology
The theory and technology of electromagnetic pulse and engineering protection thereof remains one of focus of each big country's research of the world today.Present research focus is to utilize Pulse Power Techniques to develop fast forward position, high repetition frequency, burst pulse simulator and super EMP (Super-EMP) simulator on the one hand, is the expansion of EMP effect and application thereof on the other hand.In the High pulse power technology, switching technique has special consequence, and it has not only determined the output characteristic of pulse power device, or even the pulse power system key of success.For the leading-edge pulse time that makes electromagnetic pulse simulator reduces, waveform is smooth, reduce the radiated interference to environment, designed coaxial shielding formula gases at high pressure spark switch.
Summary of the invention
Technical problem: the same with High pulse power technology, in the nuclear electromagnetic pulse analogue technique, switching technique has special consequence.It has not only determined the output characteristic of device, or even the analogue system key of success.Switch had both required to transmit high-power, low time jitter, also required to have low inductance and low loss resistance.The normal three electrode field distortion type gas switchs that adopt, main configuration can be divided into two kinds: a kind of is an electrode centers perforate, introduces and triggers pin; Another kind is the mid-plane position at switch electrode, and promptly the central potential face is zero place, puts into circular ring plate, constitutes trigger electrode.
The version of gas spark switch, electrode shape, triggering form and trigger impulse, gas pressure etc. all can the paired pulses waveform parameter produce bigger influence, must take seriously.The switch of above-mentioned two kinds of versions is very little in the main electrode gap d, voltage across poles is high, require under the situation of waveform rise time less than 3ns, exists to trigger and shortcomings such as waveform adjustment difficulty, radiated interference.
Technical scheme: coaxial shielding formula gases at high pressure spark of the present utility model, principle according to the characteristic impedance coupling is designed to coaxial structure with it, and energy storage capacitor packed into wherein, not only help to reduce inductance and make compact conformation, add the rising edge of fast pulse, and can solve shielding, support and problem with grounding, be more convenient for simultaneously realizing being connected with the transition of coaxial cable; Adopt horizontal double gap pin to trigger structure, conveniently splitting the adjusting of closing internal electric field and the adjustment of trigger position, and can block the branch flow problem of main pulse, make switch can be applicable to the generation positive negative pulse stuffing simultaneously by trigger electrode.
Axle shielded high-voltage gas spark switch of the present utility model comprises the discharge main electrode; Trigger pin electrode; The output main electrode; Insulator; The output copper cash; Cone-shaped metal output changeover portion; The metal case; Insulating sleeve; Metal end; Gas is chewed; The blocking-up gap; Trigger lead-in wire; Attachment bolt, nut; Trigger the gap; The high direct voltage electrode; Wherein, an end of metal case is connected by attachment bolt, nut with cone-shaped metal output changeover portion, and the other end of metal case is connected with metal end; In the metal case, be provided with insulating sleeve, be provided with the discharge main electrode in the centre of insulating sleeve, the discharge main electrode an end be provided with the high direct voltage electrode; Inside at cone-shaped metal output changeover portion is provided with insulator, is provided with the output copper cash in the centre of insulator, is provided with in the inner of insulator and the main electrode output main electrode on an axis of discharging; Trigger pin electrode between discharge main electrode and output main electrode; Be provided with the triggering lead-in wire on the top of triggering pin electrode, trigger being provided with between pin electrode and the triggering lead-in wire and block the gap.
Described triggering pin electrode is little curved needle-like, and rotatability, is convenient to adjust itself and discharge main electrode and the distance of output main electrode and the distribution of main electric field, realizes good ignitionability.
The cone angle of cone-shaped metal output changeover portion is 45 °～60 °, realizes impedance matching, reduces the reflection and the vibration of transmission.
The outer layer metal radome of switch is made of by end cap and the taper output changeover portion that flange and thread connection are attached thereto respectively a hollow metal case and two ends, gas is housed on the end cap chews; In outer metallic shield cylindrical section, insulating sleeve is housed, low sense storage capacitor is housed in the sleeve, the one end effectively is electrically connected with end cap, the other end extremely links to each other with a main electrode 1 and dc high voltage input, another main electrode 3 is relative also at a distance of several millimeters with main electrode 1, the output of main electrode 3 well is connected with the output copper cash, both are with insulator by skin, this insulator part embeds in the insulating cylinder, a part and the driving fit of output changeover portion, afterbody passes changeover portion with the output copper cash and links to each other with the output coaxial cable by connector, by thread connection and sealing ring sealing, seal by thread connection and sealing ring between insulator and changeover portion between main electrode 3 and insulator; The hollow metal case has two boss outward, and boss central authorities respectively have a tapped through hole to feed in the shell, are respectively applied for dc high voltage input electrode and trigger electrode, and this two electrode and case are isolated by insulating case, and guarantees air-tightness by thread connection and sealing ring; Trigger electrode one end is that little curved needle-like stretches between the main electrode 1,3, rotatable adjustment, and the other end is positioned at the outer insulation booth of metal case for bigger plane, blocks gaps with the input lead of trigger impulse at a distance of several millimeters formation; Be filled with the high pressure silicone grease between dc high voltage input electrode, trigger electrode and output copper cash and the insulating material; The characteristic impedance of switch main body is identical with load impedance, and the changeover portion cone angle is 45 °～60 °.
Utilize the rotatability of little curved needle-like trigger electrode to adjust the distance between itself and two main electrodes and the distribution of main electric field, realize good ignitionability.
Utilize to trigger air gap (blocking-up gap) between lead-in wire and trigger electrode and realize bypass blocking-up, positive and negative pulse-triggered easy to use and be used for the positive negative pulse stuffing source main pulse; The triggering gap that utilizes the blocking-up gap and trigger between pin and main electrode makes the triggering pin form the extremely poly-effect of electric charge, improves and triggers performance.
Utilizing cone angle is 45 °～60 ° the taper output changeover portion realization and the impedance matching of the output transmission line of clock, reduces the reflection and the vibration of transmission.
Beneficial effect:
1, the rotatability of little curved needle-like trigger electrode helps regulating the distance between itself and two main electrodes and the distribution of main electric field, realizes good ignitionability energy.
2, the blocking-up gap helps using positive and negative pulse-triggered, and can be used for forming positive negative pulse stuffing;
3, the blocking-up gap helps triggering the extremely poly-effect of pin formation electric charge with the triggering gap, improves and triggers performance;
4, taper output changeover portion realizes helping reducing the reflection and the vibration of transmission;
5, the shielding integral structure helps the effective inductance of system, helps reducing radiated interference;
6, simple for structure.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Have among the figure: discharge main electrode 1; Output main electrode 3; Trigger pin electrode 2; Insulator 4; Output copper cash 5; Cone-shaped metal output changeover portion 6; Metal case 7; Insulating sleeve 8; Metal end 9; Gas chews 10; Blocking-up gap 11; Trigger lead-in wire 12; Attachment bolt, nut 13,14; Trigger gap 15; High direct voltage electrode 16.
Embodiment
The outer layer metal radome of the utility model coaxial shielding formula gases at high pressure spark is made of by end cap 9 and the taper output changeover portion 6 that flange and attachment bolt, nut 13,14 are attached thereto respectively a hollow metal case 7 and two ends, on the end cap 9 gas is housed and chews 10; Insulating sleeve 8 is housed in hollow metal case 7, low sense storage capacitor (not shown) is housed in the sleeve 8, the one end effectively is electrically connected with end cap 9, the other end links to each other with a main electrode 1 and the dc high voltage input utmost point 16, another main electrode 3 is relative also at a distance of several millimeters with main electrode 1, the output of main electrode 3 well is connected with output copper cash 5, both skins are with insulator 4, insulator 4 parts embed in the insulating cylinder 8, a part and 6 driving fits of output changeover portion, afterbody passes changeover portion 6 by connector and the output coaxial cable (not shown) that links to each other with output copper cash 5,4 of main electrode 3 and insulators be by thread connection and the sealing of sealing ring (not shown), and 6 of insulator 4 and changeover portions seal by thread connection and sealing ring (not shown); Two boss (only illustrating one among the figure) are arranged outside the hollow metal case 7, boss central authorities respectively have a tapped through hole to feed in the metal case 7, be respectively applied for dc high voltage input electrode 16 and trigger electrode 3, this two electrode and case 7 are isolated by insulating case, and guarantee air-tightness by thread connection and sealing ring (not shown); Trigger electrode 2 one ends are the needle-like of little curved rotatable adjustment, stretch into to form between the main electrode 1,3 and trigger gap 15, the other end is that bigger plane is positioned at the insulation booth outside the metal case 7, blocks gaps 11 with the input lead 12 of trigger impulse at a distance of several millimeters formation; Be filled with the high pressure silicone grease between dc high voltage input electrode 16, trigger electrode 2 and output copper cash 5 and the insulating material; The characteristic impedance of switch main body is identical with load impedance, and changeover portion 6 cone angles are 45 °～60 °.
The selection of material, shape, connected mode
Claims (3)
1. a coaxial shielding formula gases at high pressure spark switch is characterized in that this spark switch comprises discharge main electrode (1); Trigger pin electrode (2); Output main electrode (3); Insulator (4); Output copper cash (5); Cone-shaped metal output changeover portion (6); Metal case (7); Insulating sleeve (8); Metal end (9); Gas is chewed (10); Blocking-up gap (11); Trigger lead-in wire (12); Attachment bolt, nut (13,14); Trigger gap (15); High direct voltage electrode (16); Wherein, an end of metal case (7) is connected by attachment bolt, nut (13,14) with cone-shaped metal output changeover portion (6), and the other end of metal case (7) is connected with metal end (9); In metal case (7), be provided with insulating sleeve (8), be provided with in the centre of insulating sleeve (8) discharge main electrode (1), the discharge main electrode (1) an end be provided with high direct voltage electrode (16); Inside at cone-shaped metal output changeover portion (6) is provided with insulator (4), is provided with output copper cash (5) in the centre of insulator (4), is provided with in the inner of insulator (4) and main electrode (1) the output main electrode (3) on an axis of discharging; Triggering pin electrode (2) is positioned between discharge main electrode (1) and the output main electrode (3); Be provided with triggering lead-in wire (12) on the top of triggering pin electrode (2), trigger being provided with between pin electrode (2) and the triggering lead-in wire (12) and block gap (11).
2. coaxial shielding formula gases at high pressure spark switch according to claim 1, it is characterized in that described triggering pin electrode (2) is little curved needle-like, and rotatability, be convenient to adjust itself and discharge main electrode (1) and the distance of output main electrode (3) and the distribution of main electric field, realize good ignitionability.
3. coaxial shielding formula gases at high pressure spark switch according to claim 1 is characterized in that the cone angle of cone-shaped metal output changeover portion (6) is 45 °～60 °, realizes impedance matching, reduces the reflection and the vibration of transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205611776U CN201904538U (en) | 2010-10-12 | 2010-10-12 | Coaxial shielding type gas spark switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205611776U CN201904538U (en) | 2010-10-12 | 2010-10-12 | Coaxial shielding type gas spark switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201904538U true CN201904538U (en) | 2011-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205611776U Expired - Fee Related CN201904538U (en) | 2010-10-12 | 2010-10-12 | Coaxial shielding type gas spark switch |
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| CN (1) | CN201904538U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013635A (en) * | 2010-10-12 | 2011-04-13 | 南京信息工程大学 | Coaxial shield gas spark switch |
| CN102522698A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Rodlike three-electrode high-energy pulse discharge switch under vacuum environment |
| CN102522699A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Rodlike three-electrode high-energy pulse discharge switch under gaseous environment |
| CN103400717A (en) * | 2013-08-06 | 2013-11-20 | 国家电网公司 | Multi-electrode field distortion gas switch and multi-switch synchronous triggering method |
| CN105307367A (en) * | 2015-09-14 | 2016-02-03 | 西安交通大学 | Circuit used for prolonging service life of two-electrode gas switch and method |
-
2010
- 2010-10-12 CN CN2010205611776U patent/CN201904538U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013635A (en) * | 2010-10-12 | 2011-04-13 | 南京信息工程大学 | Coaxial shield gas spark switch |
| CN102013635B (en) * | 2010-10-12 | 2012-10-24 | 南京信息工程大学 | Coaxial shield gas spark switch |
| CN102522698A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Rodlike three-electrode high-energy pulse discharge switch under vacuum environment |
| CN102522699A (en) * | 2011-12-06 | 2012-06-27 | 西安交通大学 | Rodlike three-electrode high-energy pulse discharge switch under gaseous environment |
| CN102522698B (en) * | 2011-12-06 | 2013-04-17 | 西安交通大学 | Rodlike three-electrode high-energy pulse discharge switch under vacuum environment |
| CN103400717A (en) * | 2013-08-06 | 2013-11-20 | 国家电网公司 | Multi-electrode field distortion gas switch and multi-switch synchronous triggering method |
| CN105307367A (en) * | 2015-09-14 | 2016-02-03 | 西安交通大学 | Circuit used for prolonging service life of two-electrode gas switch and method |
| CN105307367B (en) * | 2015-09-14 | 2018-07-17 | 西安交通大学 | A kind of circuit and method extending two-electrode gas switch service life number |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20121012 |