CN103066497A - Laser trigger vacuum switch with fast operating mechanism - Google Patents
Laser trigger vacuum switch with fast operating mechanism Download PDFInfo
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- CN103066497A CN103066497A CN201210546302XA CN201210546302A CN103066497A CN 103066497 A CN103066497 A CN 103066497A CN 201210546302X A CN201210546302X A CN 201210546302XA CN 201210546302 A CN201210546302 A CN 201210546302A CN 103066497 A CN103066497 A CN 103066497A
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Abstract
The invention discloses a laser trigger vacuum switch with a fast operating mechanism, wherein the laser trigger vacuum switch with the fast operating mechanism is fast in trigger break-over time and stable in switch accuracy, capable of reducing damage of large current electric arc to electrodes and effectively prolonging service life of the switch. The fast operating mechanism is placed inside a sealed shell. An output rod of the fast operating mechanism is connected with a moving conducting rod through an elastic connecting piece. A target electrode is placed on the front end surface of the moving conducting rod. Further a conducting fixing piece is placed outside the moving conducting rod. A rolling connecting piece is placed between the moving conducting rod and the conducting fixing piece. The moving conducting rod is connected with a second electrode through the conducting fixing piece and a conducting connecting piece. Further a coil inducting current rising rate values is placed inside the sealed shell. An output end of the coil is connected with a control circuit. The control circuit controls a power-storage device to excite for the fast operating mechanism.
Description
Technical field
The invention belongs to pulse power system Closing Switch field, relate in particular to a kind of both had fast triggering and conducting time and stable triggering precision, high current arc can be reduced again to the infringement of electrode, the switch laser triggered vacuum switch with quick operating mechanism in useful life can be effectively prolonged.
Background technology
Pulse power system is in order to producing high voltage, heavy current, powerful pulse, its operating voltage, electric current, power successively at kV, kA, more than the MW level, repetition rate is less than 1000 pulses of per second.Pulse power system can be used for the national defence fields such as light laser, magnetic artillery, industrial sphere of life and the medical fields such as pipeline solution dirt, industrial refuse pulverizing.Closing Switch is device very important in the pulse power system, plays a part to connect energy storage device and load, is used for conducting and isolation current circuit, and affects the steepness degree of impulse waveform, and its characteristic directly affects the performance of whole system.Therefore, Closing Switch not only will be born high pressure, high current, high power, also will have a Time delay little, and triggering precision is high, and working stability satisfies the performances such as repetition rate requirement, also will have enough useful life simultaneously.
At present, Closing Switch commonly used can be divided into gas switch, solid switch, liquid switch, counterfeit spark switch and Triggered Vacuum Switch (Triggered Vacuum Switch, TVS) etc. in the pulse power system.Triggered Vacuum Switch is a kind of novel switched device that Vacuum Relay Technique and three utmost point gap technology are combined, and Triggered Vacuum Switch can be carried out electricity by trigger electrode and be triggered, triggers by adding injected electrons line, laser beam irradiation and X-ray beam irradiation.The vacuum switch that triggers by laser beam irradiation is called laser triggered vacuum switch (Laser Triggered Vacuum Switch, LTVS), because the Time delay of laser triggered vacuum switch is as short as tens ns, triggering precision can reach in the 5ns, is the high-power quick control switch that is considered in recent years tool development and application prospect.
The structure of existing laser triggered vacuum switch is more, wherein a kind of structure is that a seal casinghousing is arranged, axial end at seal casinghousing is fixed with the first electrode, the axial other end at seal casinghousing is fixed with the second electrode, leave the gap between the first electrode end face relative with two of the second electrode, it is the laser triggered gap, in the first electrode, be provided with through hole vertically, one end of through hole and laser irradiation device (Ear Mucosa Treated by He Ne Laser Irradiation window etc.) join, fluted on the second electrode end face relative with the first electrode, be fixed with target electrode in the groove, through hole is coaxial with target electrode.During work, produce laser pulse by pulse power system controller control laser, shine on the target electrode by laser irradiation device and through hole, thereby produce plasma steam at laser triggered gap place, under the voltage effect of the first electrode, the second electrode, produce charged particle, again further motion under the highfield effect of charged particle, cause the processes such as ionization, consist of current delivery path, i.e. switch closure by the charged particle in the gap at last.The laser triggered vacuum switch arc voltage is low generally speaking, and the electrode erosion rate is also lower, if the current waveform cycle of still flowing through electrode greater than 5ms, when peak value surpasses 500kA, with regard to very easily generating electrodes ablation, has shortened the useful life of switch.
Summary of the invention
The present invention is in order to solve the existing above-mentioned technical problem of prior art, a kind of both had fast triggering and conducting time and stable triggering precision are provided, high current arc can be reduced again to the infringement of electrode, the switch laser triggered vacuum switch with quick operating mechanism in useful life can be effectively prolonged.
Technical solution of the present invention is: a kind of laser triggered vacuum switch with quick operating mechanism, seal casinghousing is arranged, axial end at seal casinghousing is fixed with the first electrode, the axial other end at seal casinghousing is fixed with the second electrode, in the first electrode, be provided with through hole vertically, one end and the laser irradiation device of through hole join, the other end of through hole is relatively set with target electrode, the laser triggered gap is arranged between the end face of the first electrode and the target electrode, in described seal casinghousing, also be provided with quick operating mechanism, the take-off lever of operating mechanism joins by Flexible Connector and moving conductive rod fast, described target electrode places on the front end face of moving conductive rod, outside moving conductive rod, be provided with the conduction fixture, between moving conductive rod and the conduction fixture rolling connector is arranged, moving conductive rod joins by conduction fixture and conducting connecting part and the second electrode, in seal casinghousing, also be provided with the coil of induced current rate-of-rise value, output and the control circuit of coil join, and control circuit control energy storage device is quick operating mechanism excitation.
Described laser irradiation device is laser fibre-optical coupling device, at described through hole laser focusing lens is arranged.
Of the present invention is that laser triggers, have fast triggering and conducting time and stable triggering precision, set power induction coil can detect the current-rising-rate value that flows through electrode automatically simultaneously, when detecting the current-rising-rate value less than the threshold value set, be closed path cycle when longer, drive quick operating mechanism action by controller, make the laser triggered gap closed, thereby reduce high current arc to the infringement of electrode, the useful life of effectively improving switch.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment
As shown in Figure 1: same as the prior art, seal casinghousing 1 is arranged, be fixed with the first electrode 2 at the axial end of seal casinghousing 1, be fixed with the second electrode 3 at the axial other end of seal casinghousing 1, the first electrode 2 is anode (negative electrode), and the second electrode 3 is negative electrode (anode).In the first electrode 2, be provided with through hole 4 vertically, one end and the laser irradiation device 5 of through hole 4 join, the other end of through hole 4 is relatively set with target electrode 6, between the end face of the first electrode 2 and the target electrode 6 laser triggered gap 7 is arranged, in described seal casinghousing 1, also to be provided with the permanent-magnet manipulating mechanism that quick operating mechanism 8(can realize actuating fast with the prior art difference, repulsive force mechanism or other quick operating mechanisms etc.), the take-off lever 9 of operating mechanism 8 joins by Flexible Connector 10 and moving conductive rod 11 fast, Flexible Connector 10 can be butterfly spring etc., target electrode 6 is fixed on the front end face of moving conductive rod 11, outside moving conductive rod 11, be provided with conduction fixture 12, between moving conductive rod 11 and the conduction fixture 12 rolling connector 13 is arranged, moving conductive rod 11 joins by conduction fixture 12 and conducting connecting part 14 and the second electrode 3, in seal casinghousing 1, also be provided with the coil 15 of induced current rate-of-rise value, can adopt Luo-coil, be fixed on the front end of conduction fixture 12.The output of coil 15 and control circuit 16 join, and control circuit 16 control energy storage devices 17 are quick operating mechanism 8 excitations, and energy storage device 17 can be storage battery, electric capacity etc.Laser irradiation device 5 can be laser fibre-optical coupling device, in described through hole 4 laser focusing lens 18 is arranged.
Operation principle:
1. the same prior art of laser triggering part of the present invention;
2. Luo-coil 15 detects the current-rising-rate value in real time, when the current-rising-rate value surpasses setting threshold, illustrate On current be wave period less than the current wave of 5ms, this moment, fast operating mechanism 8 was failure to actuate, whole switch disconnects when treating that the pulse current wave attenuation is complete; If the current-rising-rate value that is detected by Luo-coil 15 is during less than setting threshold, illustrate that On current is that wave period is the current wave greater than 5ms, the combined floodgate magnet exciting coil discharge of 17 pairs of permanent magnetic operating mechanisms 8 of control circuit 16 output signals control energy storage device this moment, make quick operating mechanism 8 actions, its take-off lever 9 drives moving conductive rod 11 and the first electrode 2 joins, and makes laser triggered gap 7 closures; After Luo-coil 15 detects the current attenuation end, the separating brake magnet exciting coil discharge of 17 pairs of permanent magnetic operating mechanisms 8 of controller 16 output signals control energy storage device, separate with the first electrode 2 thereby make take-off lever 9 drive moving conductive rod 11, for switch is ready next time.
Claims (2)
1. laser triggered vacuum switch with quick operating mechanism, seal casinghousing (1) is arranged, axial end at seal casinghousing (1) is fixed with the first electrode (2), the axial other end at seal casinghousing (1) is fixed with the second electrode (3), in the first electrode (2), be provided with through hole (4) vertically, one end of through hole (4) and laser irradiation device (5) join, the other end of through hole (4) is relatively set with target electrode (6), between the end face of the first electrode (2) and the target electrode (6) laser triggered gap (7) is arranged, it is characterized in that: in described seal casinghousing (1), also be provided with quick operating mechanism (8), the take-off lever (9) of operating mechanism (8) joins by Flexible Connector (10) and moving conductive rod (11) fast, described target electrode (6) places on the front end face of moving conductive rod (11), outside moving conductive rod (11), be provided with conduction fixture (12), between moving conductive rod (11) and the conduction fixture (12) rolling connector (13) is arranged, moving conductive rod (11) joins with the second electrode (3) by conduction fixture (12) and conducting connecting part (14), in seal casinghousing (1), also be provided with the coil (15) of induced current rate-of-rise value, the output of coil (15) and control circuit (16) join, and control circuit (16) control energy storage device (17) is quick operating mechanism (8) excitation.
2. the laser triggered vacuum switch with quick operating mechanism according to claim 1, it is characterized in that: described laser irradiation device (5) is laser fibre-optical coupling device, at described through hole (4) laser focusing lens (18) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546302XA CN103066497A (en) | 2012-12-17 | 2012-12-17 | Laser trigger vacuum switch with fast operating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210546302XA CN103066497A (en) | 2012-12-17 | 2012-12-17 | Laser trigger vacuum switch with fast operating mechanism |
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| Publication Number | Publication Date |
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| CN103066497A true CN103066497A (en) | 2013-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210546302XA Pending CN103066497A (en) | 2012-12-17 | 2012-12-17 | Laser trigger vacuum switch with fast operating mechanism |
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| CN (1) | CN103066497A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108539580A (en) * | 2018-03-30 | 2018-09-14 | 中国人民解放军国防科技大学 | Low-trigger-light-energy light-trigger gas switch and light path design method thereof |
| CN109449761A (en) * | 2018-12-13 | 2019-03-08 | 中国工程物理研究院流体物理研究所 | Trigger switch trigger switch synchronous with the two-stage high power repetition that compact electromagnetic drives |
| WO2019104908A1 (en) * | 2017-11-30 | 2019-06-06 | 大连理工大学 | Laser triggered multi-stage vacuum switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3811070A (en) * | 1972-10-25 | 1974-05-14 | Westinghouse Electric Corp | Laser initiated three electrode type triggered vacuum gap device |
| CN1332465A (en) * | 2001-07-12 | 2002-01-23 | 大连理工大学 | Light controlled modualr high-pressure vacuum switch techonlogy |
| CN101477915A (en) * | 2009-01-17 | 2009-07-08 | 大连理工大学 | Light controlled vacuum switch module |
| CN101820275A (en) * | 2010-04-20 | 2010-09-01 | 华中科技大学 | Laser triggered vacuum switch |
| US20110215717A1 (en) * | 2010-03-04 | 2011-09-08 | Duly Research Inc. | High voltage switch triggered by a laser-photocathode subsystem |
-
2012
- 2012-12-17 CN CN201210546302XA patent/CN103066497A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3811070A (en) * | 1972-10-25 | 1974-05-14 | Westinghouse Electric Corp | Laser initiated three electrode type triggered vacuum gap device |
| CN1332465A (en) * | 2001-07-12 | 2002-01-23 | 大连理工大学 | Light controlled modualr high-pressure vacuum switch techonlogy |
| CN101477915A (en) * | 2009-01-17 | 2009-07-08 | 大连理工大学 | Light controlled vacuum switch module |
| US20110215717A1 (en) * | 2010-03-04 | 2011-09-08 | Duly Research Inc. | High voltage switch triggered by a laser-photocathode subsystem |
| CN101820275A (en) * | 2010-04-20 | 2010-09-01 | 华中科技大学 | Laser triggered vacuum switch |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019104908A1 (en) * | 2017-11-30 | 2019-06-06 | 大连理工大学 | Laser triggered multi-stage vacuum switch |
| US10594113B2 (en) | 2017-11-30 | 2020-03-17 | Dalian University Of Technology | Laser triggered multi-stage vacuum switch |
| CN108539580A (en) * | 2018-03-30 | 2018-09-14 | 中国人民解放军国防科技大学 | Low-trigger-light-energy light-trigger gas switch and light path design method thereof |
| CN109449761A (en) * | 2018-12-13 | 2019-03-08 | 中国工程物理研究院流体物理研究所 | Trigger switch trigger switch synchronous with the two-stage high power repetition that compact electromagnetic drives |
| CN109449761B (en) * | 2018-12-13 | 2023-11-07 | 中国工程物理研究院流体物理研究所 | Trigger switch and small electromagnetic driven two-stage high-power repetition frequency synchronous trigger switch |
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Application publication date: 20130424 |