CN103413738A - Supporting device for cascade connection type electron beam diode suspension electrode and driving circuit thereof - Google Patents
Supporting device for cascade connection type electron beam diode suspension electrode and driving circuit thereof Download PDFInfo
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- CN103413738A CN103413738A CN201310309530XA CN201310309530A CN103413738A CN 103413738 A CN103413738 A CN 103413738A CN 201310309530X A CN201310309530X A CN 201310309530XA CN 201310309530 A CN201310309530 A CN 201310309530A CN 103413738 A CN103413738 A CN 103413738A
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Abstract
The invention relates to a supporting device for a cascade connection type electron beam diode suspension electrode and a driving circuit of the supporting device for the cascade connection type electron beam diode suspension electrode. The supporting device for the cascade connection type electron beam diode suspension electrode comprises three supporting units, wherein each supporting unit comprises a supporting pin, a shell body, a spring, an iron core and an electromagnetic coil, wherein each electromagnetic coil is installed outside the tube wall of each shell body, each spring is installed inside each shell body, each iron core is arranged at the front end of each spring, a through hole is formed in the center of each iron core, each iron core and each supporting pin are fixedly connected into a whole, and each supporting pin can move back and forth through electromagnetic force generated by each electromagnetic coil and through each spring, so that the cascade connection type electron beam diode suspension electrode is fixed and is released. Due to the fact that the supporting device for the cascade connection type electron beam diode suspension electrode and the driving circuit of the supporting device for the cascade connection type electron beam diode suspension electrode achieve suspension operation of the high-voltage electrode, the defect that a fixing support is not good enough in insulating performance under the action of high voltage, and has influence on distribution of electric fields is overcome.
Description
Technical field
The present invention relates to the Pulse Power Techniques field, relate in particular to bracing or strutting arrangement and the drive circuit thereof of the electron beam Cascade diode suspension electrode of a kind of many gaps tandem work.
Background technology
Carry out the system-generated electromagnetic pulse effect study and need to set up high energy fluence and the hard X ray source of spectral distribution between 20～120keV, the power spectrum of hard X ray depends on the energy of bremstrahlen electron beam, and employing tandem diode, by secondary or Multilevel partial-pressure, reduce electron beam energy, can produce large tracts of land, power spectrum energy fluence hard X ray true to nature, high.The double Eagle of the U.S. has carried out two-stage and three grades of tandem diodes, obtains experimental data preferably.
In Pulse Power Techniques, vacuum diode is as the load of transmission line, and its effect is that the high power pulse energy that transmission line forms is changed into to the particle beams or implosion plasma.Vacuum diode mainly is comprised of negative electrode and anode, the tandem diode namely increases new electrode again between the negative electrode of electron beam diode and anode, be similar to the series connection effect between capacitor plate, newly increase the anode of the one side of electrode as first gap, another side is as the negative electrode in second gap, under the high-voltage pulse effect, realize the tandem working of diode.
This single gap diode is divided into to a plurality of gap technologies by increasing electrode, make electrode retaining collar not overlapping on the electron beam transmit direction, due to the capacitances in series dividing potential drop, when main pulse is loaded into diode, each gap obtains corresponding voltage, suspension electrode is namely as the anode in first gap, stop the electronics of main cathode (first negative electrode) emission and be converted to X ray, as the cathode emission electronics in second gap, forming large-area Uniform Irradiation face on the nearer plane of distance diode X ray window simultaneously.The accelerating voltage of each diode gap electronics is because dividing potential drop reduces, make the electron beam power spectrum reduce, bremsstrahlung X power spectrum reduces, and produces new X-ray energy spectrum, and realize power match transmission or accurate coupling transmission, improve energy transmission efficiency and diode energy conversion efficiency; By the gap dividing potential drop, can also improve the voltage of pulse power supply, thereby improve total energy storage in addition, produce the X ray of the high energy fluence of large tracts of land.
In the research of tandem diode, the support of suspension electrode is the prerequisite that realizes the tandem diode.In the low impedance diode chamber, the current normal electrode of insulated fixing support in the middle of supporting that adopt, when adopting fixed insulation to support, the introducing due to the support of solid insulator, can affect Electric Field Distribution between electrode.When lead-in insulator supported, at insulator, three binding site place electric fields of electrode and space medium became the most weak place, so lead-in insulator, consider that at first whether insulator meets the requirement of edge flashing, considers interelectrode Electric Field Distribution simultaneously simultaneously.When insulator can not meet the requiring of edge flashing the time, must increase the size of insulator, the inductance that can affect so again diode distributes, the reduction pulse front edge.While especially for the electron beam when hundreds of kilovolts, being applied on the coaxial electrode in gap more than, conventional strutting piece is difficult to meet the electric insulation requirement, has influence on the realization of tandem diode.
Summary of the invention
The present invention is directed to the suspension electrode supporting construction insulation property under action of high voltage that exist inadequate in the diode tandem, and the deficiency that Electric Field Distribution is exerted an influence, a kind of bracing or strutting arrangement and drive circuit thereof of the electron beam diode of the Cascade based on movement support structures suspension electrode have been proposed, moment before diode operation, pass through External Force Acting, the support pin is removed, suspension electrode is freely falling body under the effect of gravity, utilize the inertia of object to realize the suspension of target, realize many gaps diode tandem work of moment.
Technical solution of the present invention is as follows:
A kind of bracing or strutting arrangement of Cascade electron beam diode suspension electrode, its special character is: comprise three support units, its lay respectively at Cascade electron beam diode suspension electrode 1 directly over, front-left and front-right; Described support unit comprises support pin 3, housing 4, spring 5, iron core 6, solenoid 7 and position-limiting drum 8, described housing 4 is tubular structure, its openend is fixed on electron beam diode shell 2 and over against the through hole of shell 2, its non-openend arranges centre bore, and described position-limiting drum 8 is buckled on the centre bore of housing 4; Described solenoid 7 is arranged on the barrel outside of housing 4, described spring 5 is arranged on housing 4 inside, one end of described spring 5 withstands on iron core 6, its other end withstands on the non-openend of housing 4, the middle part of described support pin 3 is fixed on iron core 6, its the inner is passed after the through hole on electron beam diode shell 2 and is inserted in the supported hole arranged on suspension electrode 1 outer ring, and its outer end is stretched in position-limiting drum 8 after passing the centre bore of spring 5 and housing 4 non-openends; Described iron core 6 can move along housing 4 axis directions under the effect of electromagnetic force that solenoid 7 produces and spring 5.
The non-openend of above-mentioned shell 4 is provided with a plurality of gas flow through holes that communicate with position-limiting drum 8.
Above-mentioned spring 5 is the turriform spring, and described iron core 6 is arranged on the place, large footpath of turriform spring.
Above-mentioned iron core 6 adopts the soft magnetic material pure iron to make, and described support pin 3 adopts aluminium to make.
Between above-mentioned housing 4 centre bores and electron beam diode shell 2 through holes, axiality is less than 0.04mm, housing 4 center-hole diameters and electron beam diode shell 2 through-hole diameters and support pin diameter deviation ± 0.02mm.
The drive circuit of the bracing or strutting arrangement of above-mentioned Cascade electron beam diode suspension electrode, comprise storage capacitor C1, thyratron U1, divider resistance unit and delayer T1, wherein storage capacitor C1, thyratron U1 and solenoid 7 loop in series, and the tie point ground connection of storage capacitor C1 and solenoid 7; The divider resistance unit is connected in parallel on the two ends of solenoid 7, described divider resistance unit comprises divider resistance R1, the R2 of two tandem workings, the input of described delayer T1 electrically connects between two divider resistances, and output connects with the prime trigger element of electron beam diode.
The technique effect that the present invention has is as follows:
1, the present invention, by the control to suspension electrode, can realize the tandem work of a plurality of diodes gap, reduces the single gap diode voltage, produces the lower Pulsed Xray source of power spectrum.
2, the present invention adopts movement support structures, moment before Pulsed electron beam diode work is removed support fast, realize the suspension work of high-field electrode, to be fixedly supported under action of high voltage insulation property inadequate thereby overcome, and the deficiency that Electric Field Distribution is exerted an influence.
3, support and control system of the present invention can make to support pin and withdraw fast support, and the interior middle high-field electrode freely falling body distance of time of withdrawing support is less than 0.15mm, and moment is in suspended state, does not substantially affect Electric Field Distribution between high-field electrode.
4, the supporting construction based on high-speed screw work of electromagnet principle of the present invention's development, volume is little, simple in structure, and movement velocity is fast, can realize the effective location of suspension electrode is supported, and can withdraw fast support, guarantees the suspension work of suspension electrode.
5, suspension electrode of the present invention supports by three support units, two left-right symmetric in the horizontal direction wherein, another directly over vertical direction, when having avoided supporting pin and being arranged on below, withdraw smooth problem due to what the Action of Gravity Field of suspension electrode caused.
6, support and control system drive circuit of the present invention can make the solenoid of supporting construction produce larger electromagnetic force in moment, drive the support pin and can in the time, withdraw out the support to suspension electrode at 5ms, withdraw distance and be not less than 30mm, adopt in addition the method for synchronizing relay, realized synchronousing working of support and control system and tandem diode.
7, suspension electrode of the present invention and supporting construction thereof can also support research for other high-field electrodes.
The accompanying drawing explanation
Fig. 1 is bracing or strutting arrangement of the present invention and tandem diode structure position view;
Fig. 2 is support unit structural representation of the present invention;
Fig. 3 is that three supports of the present invention are supported schematic diagram for suspension electrode;
Fig. 4 is bracing or strutting arrangement driving circuit principle schematic diagram of the present invention;
Fig. 5 is that bracing or strutting arrangement drive circuit of the present invention is synchronoused working flow chart with the time delay of diode.
Reference numeral is: the 1-suspension electrode; The 2-diode case; 3-supports pin; The 4-housing; The 5-spring; The 6-iron core; The 7-solenoid; The 8-position-limiting drum; The 9-diode cathode; The 10-diode anode; The 11-support unit; The C1-storage capacitor; The U1-thyratron; R1, R2-divider resistance; The T1-delayer.
Embodiment
Fig. 1 is the locations of structures schematic diagram of bracing or strutting arrangement of the present invention and tandem diode, coaxial line is arranged at intervals with the suspension electrode 1 that is no less than between the negative electrode 9 of conventional electrical bundle diode and anode 10, suspension electrode 1 is generally annular plate, working face is parallel to the working face of diode anode 10 and diode cathode 9, and the center of suspension electrode 1, diode anode 10 and diode cathode 9 point-blank; Suspension electrode 1 supports by the support unit 11 that several are fixed on the electron beam diode shell, the housing 4 of support unit 11 is fixed on the shell 2 of electron beam diode, support by supporting pin 3 and withdrawing, realize the moment suspension work of many group high pressure suspending electrodes 1.
Between suspension electrode and and diode anode 10 and negative electrode 9 between spacing want rationally, for guaranteeing the consistency of electron emission between many gaps, the suspension electrode of take is example, gap between suspension electrode 1 and diode cathode 9 is 6.4～6.8mm, and the gap between suspension electrode 1 and diode anode 10 is 8.6～8.8mm.
As shown in Figure 2, support unit 11 of the present invention comprises support pin 3, housing 4, spring 5, iron core 6, solenoid 7 and position-limiting drum 8, housing 4 be opening forward, namely towards the tubular structure of diode direction, housing 4 front end flanges are fixed on diode case 2, the bottom of housing 4 cylindrical shells is fixed with position-limiting drum 8, the nozzle of position-limiting drum 8 forward, on the center of housing 4 cylinder body bottoms and corresponding diode case 2, have through hole, for guaranteeing to support the smooth plug of pin and accurately locate, at the bottom of requirement housing cylinder, the axiality of the support pin through hole of centre bore and diode case is not more than 0.04mm.
Housing 4 outer tube walls are equipped with solenoid 7, and housing 4 inside are equipped with spring 5, and the front end of spring 5 is provided with iron core 6, the center of iron core 6 is through hole, and be solidified as a whole with support pin 3 middle parts of passing the iron core through hole, both are fixed into one, avoid adopting being threaded causing the deviation of axiality; Support the two ends of pin 3 and pass housing 4 cylindrical shell centre bores and diode case 2 through holes, and can under the effect of electromagnetic force that solenoid 7 produces and spring 5, move forward and backward, when support pin 3 was in contraction state, the rear end of supporting pin 3 can stretch to the cylindrical shell of position-limiting drum 8; When supporting pin 3, be in while stretching out state, the front end that supports pin 3 can pass diode case 2 through holes and insert the supported hole arranged on suspension electrode 1 outer ring, like this when diode is not worked, supporting pin 3 can support suspension electrode 1, during diode operation, but support 3 moments of pin from the supported hole of suspension electrode 1, extracting out, suspension electrode 1 freely falling body, because the operating time of pulse diode is very short, can realize the moment tandem working of electron beam diode and suspension electrode 1, meet the scientific research and testing requirement of tandem diode.
As shown in Figure 3, adopt three support pins 3 and 11 pairs of suspension electrodes 1 of corresponding support unit to support, wherein two support pins 3 are symmetrical arranged in the horizontal direction, another support pin 3 directly over the vertical direction setting, support pin and below suspension electrode 1, do not arrange, can avoid the smooth problem of withdrawing that Action of Gravity Field due to suspension electrode 1 causes.When high-voltage diode is worked, rely on electromagnetic force, three support pins 3 are withdrawn simultaneously, and high-field electrode is realized suspension work in moment.
Fig. 4 is bracing or strutting arrangement drive circuit schematic diagram of the present invention, and drive circuit comprises storage capacitor C1, thyratron U1, solenoid 7, delayer T1 and divider resistance unit.Wherein storage capacitor C1, thyratron U1 and solenoid 7 loop in series, the pole plate ground connection of storage capacitor C1; The divider resistance unit is connected in parallel on the two ends of solenoid 7, described divider resistance unit comprises divider resistance R1, the R2 of two tandem workings, the input of described delayer T1 electrically connects between two divider resistances, and output connects with the prime trigger element of electron beam diode.By extracting the low-voltage arm resistance signal in the divider resistance unit, as monitoring and synchronous control signal.
During work, at first to storage capacitor C1 charging, treat that capacitor is charged to setting voltage, trigger thyratron U1 by the prime trigger element, solenoid 7 is worked together by the iron core drive support pin that electric current produces electromagnetic force driving bracing or strutting arrangement; When adopting three tunnels to support pin or the work of multichannel support pin, adopt the high-voltage DC power supply of multi-channel parallel output simultaneously the capacitor in a plurality of loops to be charged, after charging finishes, by the prime trigger element, trigger simultaneously multichannel and drive the thyratron U1 in loop, drive the solenoid 7 in discharge loop separately, a plurality of support pin 3 synchronous workings, synchronously withdraw, extract simultaneously the synchronizing signal of solenoid 7, and after time delay, export electron beam diode prime trigger source to.
In the bracing or strutting arrangement drive circuit of Fig. 5 is synchronoused working flow chart with the time delay of diode, C1 has charged when storage capacitor, and after electron beam two utmost point instrumentation tubes are ready, at first adopt the prime manual triggers to connect thyratron U1, drive circuit is started working, and under the effect of electromagnetic force, supports pin 3 and withdraws, due to the cause of impulse stroke, support pin and withdraw the time that needs large approximate number millisecond; At drive circuit to solenoid 7 electric discharges simultaneously, by divider resistance, extract the signal of solenoid, with this signal trigger delayer DG535, after the output signal time delay 5ms of DG535, equal to support the pin departure time its time of delay, then automatically trigger the prime clock of electron beam diode, at 5ms in the time, bracing or strutting arrangement is withdrawn out diode high pressure suspending electrode supporting scope fully, the suspension electrode freely falling body, pulse diode and suspension electrode work, realize the tandem working of tandem diode simultaneously.Due to very short about 2 μ s of the prime clock operating time of electron beam diode, thus its operating time with respect to the run duration that drive circuit supports pin, can ignore.
Below provide concrete application example: " Flash II " is 2 μ s from the prime clock to the diode operation time, the 5ms of suspension electrode in removing the support process be freely falling body 125 μ m in the time, drive circuit can drive and support needle stroke 30mm within the operating time of 5ms, the degree of depth of position-limiting drum is greater than 40mm, be convenient to hold and support pin in inner movement, storage capacitor adopts the large value capacitor of 1mF/2kV, solenoid adopts the thick enamelled wire of 1mm to be wound on a work shape nylon bracket, the number of turn 200 circles, nylon bracket is fixed on the barrel of housing.This device has been realized the work of single suspension electrode, and can further promote the use of in the work of many suspension electrodes.
Claims (6)
1. the bracing or strutting arrangement of a Cascade electron beam diode suspension electrode is characterized in that:
Comprise three support units (11), its lay respectively at Cascade electron beam diode suspension electrode (1) directly over, front-left and front-right;
Described support unit (11) comprises support pin (3), housing (4), spring (5), iron core (6), solenoid (7) and position-limiting drum (8), described housing (4) is tubular structure, it is upper and over against the through hole of shell (2) that its openend is fixed on electron beam diode shell (2), its non-openend arranges centre bore, and described position-limiting drum (8) is buckled on the centre bore of housing (4); Described solenoid (7) is arranged on the barrel outside of housing (4), described spring (5) is arranged on housing (4) inside, one end of described spring (5) withstands on iron core (6), its other end withstands on the non-openend of housing (4), the middle part of described support pin (3) is fixed on iron core (6), insert in the supported hole arranged on suspension electrode (1) outer ring after passing the through hole on electron beam diode shell (2) its inner, and its outer end is stretched in position-limiting drum (8) after passing the centre bore of spring (5) and the non-openend of housing (4); Described iron core (6) can move along housing (4) axis direction under the effect of electromagnetic force that solenoid (7) produces and spring (5).
2. the bracing or strutting arrangement of Cascade electron beam diode suspension electrode according to claim 1, it is characterized in that: the non-openend of described shell (4) is provided with a plurality of gas flow through holes that communicate with position-limiting drum (8).
3. the bracing or strutting arrangement of Cascade electron beam diode suspension electrode according to claim 1 and 2, it is characterized in that: described spring (5) is the turriform spring, described iron core (6) is arranged on the place, large footpath of turriform spring.
4. the bracing or strutting arrangement of Cascade electron beam diode suspension electrode according to claim 3 is characterized in that: described iron core (6) adopts the soft magnetic material pure iron to make, and described support pin (3) adopts aluminium to make.
5. the bracing or strutting arrangement of Cascade electron beam diode suspension electrode according to claim 4, it is characterized in that: between described housing (4) centre bore and electron beam diode shell (2) through hole, axiality is less than 0.04mm, housing (4) center-hole diameter and electron beam diode shell (2) through-hole diameter and support pin diameter deviation ± 0.02mm.
6. the drive circuit of the bracing or strutting arrangement of the described Cascade electron beam diode of claim 1 to 5 suspension electrode, it is characterized in that: comprise storage capacitor (C1), thyratron (U1), divider resistance unit and delayer (T1), wherein storage capacitor (C1), thyratron (U1) and solenoid (7) loop in series, and the tie point ground connection of storage capacitor (C1) and solenoid (7); The divider resistance unit is connected in parallel on the two ends of solenoid (7), described divider resistance unit comprises the divider resistance (R1, R2) of two tandem workings, the input of described delayer (T1) electrically connects between two divider resistances, and output connects with the prime trigger element of electron beam diode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310309530.XA CN103413738B (en) | 2013-07-22 | 2013-07-22 | The bracing or strutting arrangement of cascade connection type electron beam diode suspension electrode and drive circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310309530.XA CN103413738B (en) | 2013-07-22 | 2013-07-22 | The bracing or strutting arrangement of cascade connection type electron beam diode suspension electrode and drive circuit thereof |
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| CN103413738A true CN103413738A (en) | 2013-11-27 |
| CN103413738B CN103413738B (en) | 2015-10-28 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518365A (en) * | 1981-04-16 | 1985-05-21 | Arc Technologies Systems, Ltd. | Device for nippling active electrode sections onto a combination electrode |
| US5125360A (en) * | 1986-10-30 | 1992-06-30 | Nihon Shinku Gijutsu Kabushiki Kaisha | Vacuum processing apparatus |
| US5270483A (en) * | 1992-03-31 | 1993-12-14 | Fuji Xerox Co., Ltd. | Developing apparatus |
| CN1409865A (en) * | 1999-12-15 | 2003-04-09 | 弗兰霍菲尔运输应用研究公司 | Tunable high-frequency capacitor |
-
2013
- 2013-07-22 CN CN201310309530.XA patent/CN103413738B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4518365A (en) * | 1981-04-16 | 1985-05-21 | Arc Technologies Systems, Ltd. | Device for nippling active electrode sections onto a combination electrode |
| US5125360A (en) * | 1986-10-30 | 1992-06-30 | Nihon Shinku Gijutsu Kabushiki Kaisha | Vacuum processing apparatus |
| US5270483A (en) * | 1992-03-31 | 1993-12-14 | Fuji Xerox Co., Ltd. | Developing apparatus |
| CN1409865A (en) * | 1999-12-15 | 2003-04-09 | 弗兰霍菲尔运输应用研究公司 | Tunable high-frequency capacitor |
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Granted publication date: 20151028 Termination date: 20160722 |