CN103296868B - High-voltage suspension type grid control electronic gun supply unit - Google Patents
High-voltage suspension type grid control electronic gun supply unit Download PDFInfo
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- CN103296868B CN103296868B CN201310200768.9A CN201310200768A CN103296868B CN 103296868 B CN103296868 B CN 103296868B CN 201310200768 A CN201310200768 A CN 201310200768A CN 103296868 B CN103296868 B CN 103296868B
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- 239000000725 suspension Substances 0.000 title claims abstract description 12
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 230000001360 synchronised effect Effects 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 abstract description 10
- 238000010894 electron beam technology Methods 0.000 abstract description 7
- 239000013307 optical fiber Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 206010014357 Electric shock Diseases 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002901 radioactive waste Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
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Abstract
High-voltage suspension type grid control electronic gun supply unit of the present invention, have employed Fiber isolation between grid-control power circuit and low-voltage control circuit; Electrical isolation problem between thorough solution gun cathode high pressure and low voltage control, also solves electromagnetic interference problem simultaneously.By Fiber isolation, low-voltage control circuit and grid-control power circuit are thoroughly isolated, by the frequency change of light beam break-make, be converted to the regulation voltage of grid-control power supply, export with the voltage accurately controlling grid-control power supply, achieve level and smooth, accurate, the security control of grid-control supply voltage.This beam frequencies signal, by controlling the light beam break-make frequency in optical fiber, in grid-control power circuit, is converted to control voltage by low-voltage control circuit, with the output voltage of control break grid-control power supply, thus changes the beam intensity of electron beam.
Description
Technical field
The present invention relates to a kind of supply unit, especially relate to a kind of high-voltage suspension type grid control electronic gun supply unit.
Background technology
Irradiated electrons accelerator is the nucleus equipment of irradiation processing industry, and the high electron beam irradiation utilizing electron accelerator to produce can make some materials produce physics, chemistry and biology effect, and can killing pathogenic bacteria, virus and insect effectively.Electron irradiation has normal temperature, not damaged, without residual hazard, environmental protection, low energy consumption, operation is easy, automaticity is high, be suitable for the features such as large-scale industrial production.It is fresh-keeping etc. that this technology has been widely used in material modification in industrial production, new material making, environmental protection, processing, medical and hygiene article sterilization and food sterilizing.The great advantage of electron accelerator, be directed in irradiation beams adfluxion, using energy source is abundant, and irradiation efficiency is high, does not produce radioactive waste.And according to production and processing needs, can start at any time, close electron accelerator.
Electron gun is the critical component of irradiated electrons accelerator system.In current irradiation industry, the most frequently used is diode gun, and it is primarily of negative electrode, focusing electrode, anode composition.It is simple that diode gun has structure, and it is convenient to control, and is easy to the feature of debugging, but the electronic beam current intensity of launching and energy not easily accurately control, and some needs the application scenario to electron beam energy accurately controls to be restricted.
Grid-Controlled Electron Gun is on the basis of diode gun design, adds one and controls pole---grid, to realize the object controlling electron gun electron emission.Adopt Grid-Controlled Electron Gun, the accurate control to accelerator dosage and energy can be realized.Concrete grammar is, adds a controlled negative voltage, make the electron beam that electron gun is launched, according to by the actual needs of irradiation processing product, can carry out accurate dosage and energy hole between the grid and negative electrode of electron gun.
Along with the development of irradiation technique and the expansion in market, the demand of retrofit and exact dose irradiation increases gradually, and Grid-Controlled Electron Gun is applied in irradiation processing field gradually, and the control mode of grid-control power supply slowly obtains to be paid attention to and development.
Grid-Controlled Electron Gun adopts special power supply to power usually, and the performance of power supply directly has influence on the line performance of accelerator.No matter grid-control power supply, because having direct electrical connection with the cathode high voltage of electron gun, is insulating protection, or control mode, all needs special process.
Existing grid-control Energy control technology, normally adopts adjustable transformer, exports the alternating current of variable amplitude, isolate through high voltage isolating transformer again, then through rectifying and wave-filtering, produce the grid-control power supply that can control, add between the gate electrode and the cathode electrode, realize the adjustment of grid-control power supply; By the no-load voltage ratio of manual adjustment adjustable transformer, regulate grid-control supply voltage size.This method, although to a certain extent, the electrical isolation between regulable control end and electron gun high pressure can be realized, also the object controlling grid-control supply voltage is reached, but fundamentally can not stop Danger Electric shock risk, have pulse electromagnetic to disturb between high pressure and low pressure, debug and safeguard very inconvenient, degree of regulation is not high simultaneously.
Summary of the invention
The object of the invention is to, provide a kind of new technical scheme, this technical scheme can solve prior art Problems existing and deficiency.The high-voltage suspension type grid control electronic gun supply unit of the technical program have employed Fiber isolation between grid-control power circuit and low-voltage control circuit; Electrical isolation problem between thorough solution gun cathode high pressure and low voltage control, also solves electromagnetic interference problem simultaneously.
High-voltage suspension type grid control electronic gun supply unit of the present invention, is characterized in that: comprise grid-control power circuit block and low-voltage control circuit module, is provided with fibre optic isolater between described grid-control power circuit block and described low-voltage control circuit module.
Described grid-control power circuit block comprises the high voltage isolating transformer, rectification filtering unit, voltage-reg-ulator tube, power stage metal-oxide-semiconductor, the grid-control power supply that are connected in turn; Interconnective voltage regulation unit, F-V change-over circuit I is connected with between described voltage-reg-ulator tube and described fibre optic isolater; Synchronous triggering signal treatment circuit is connected with between described power stage metal-oxide-semiconductor and described fibre optic isolater; Interconnective voltage sampling unit, V-F change-over circuit I is connected with between described grid-control power supply and described fibre optic isolater; Described grid-control power supply is connected with external Grid-Controlled Electron Gun.
Described low-voltage control circuit module comprises low-voltage supply, the voltage control circuit be connected with described low-voltage supply, the V-F change-over circuit II be connected with described voltage control circuit and voltage sets adjusting device; The synchronous triggering signal change-over circuit be connected with described low-voltage supply; The F-V change-over circuit II, voltage display circuit and the Displaying Meter that are connected in turn with described low-voltage supply.
Described F-V change-over circuit I is corresponding with described V-F change-over circuit II to be connected; Described synchronous triggering signal treatment circuit is corresponding with described synchronous triggering signal change-over circuit to be connected; Described V-F change-over circuit I is corresponding with described F-V change-over circuit II to be connected.
High-voltage suspension type grid control electronic gun supply unit of the present invention, have employed Fiber isolation between grid-control power circuit and low-voltage control circuit; Electrical isolation problem between thorough solution gun cathode high pressure and low voltage control, also solves electromagnetic interference problem simultaneously.By Fiber isolation, low-voltage control circuit and grid-control power circuit are thoroughly isolated, by the frequency change of light beam break-make, be converted to the regulation voltage of grid-control power supply, export with the voltage accurately controlling grid-control power supply, achieve level and smooth, accurate, the security control of grid-control supply voltage.This beam frequencies signal, by controlling the light beam break-make frequency in optical fiber, in grid-control power circuit, is converted to control voltage by low-voltage control circuit, with the output voltage of control break grid-control power supply, thus changes the beam intensity of electron beam.
As can be seen here, compared with prior art, the present invention has outstanding substantive distinguishing features and significant technological progress, and its beneficial effect implemented also is apparent.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the invention is described further.
Fig. 1 is the schematic diagram of high-voltage suspension type grid control electronic gun supply unit of the present invention.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
High-voltage suspension type grid control electronic gun supply unit of the present invention, comprises grid-control power circuit block and low-voltage control circuit module, is provided with fibre optic isolater between described grid-control power circuit block and described low-voltage control circuit module.Described grid-control power circuit block comprises the high voltage isolating transformer, rectification filtering unit, voltage-reg-ulator tube, power stage metal-oxide-semiconductor, the grid-control power supply that are connected in turn; Interconnective voltage regulation unit, F-V change-over circuit I is connected with between described voltage-reg-ulator tube and described fibre optic isolater; Synchronous triggering signal treatment circuit is connected with between described power stage metal-oxide-semiconductor and described fibre optic isolater; Interconnective voltage sampling unit, V-F change-over circuit I is connected with between described grid-control power supply and described fibre optic isolater; Described grid-control power supply is connected with external Grid-Controlled Electron Gun.Described low-voltage control circuit module comprises low-voltage supply, the voltage control circuit be connected with described low-voltage supply, the V-F change-over circuit II be connected with described voltage control circuit and voltage sets adjusting device; The synchronous triggering signal change-over circuit be connected with described low-voltage supply; The F-V change-over circuit II, voltage display circuit and the Displaying Meter that are connected in turn with described low-voltage supply.Described F-V change-over circuit I is corresponding with described V-F change-over circuit II to be connected; Described synchronous triggering signal treatment circuit is corresponding with described synchronous triggering signal change-over circuit to be connected; Described V-F change-over circuit I is corresponding with described F-V change-over circuit II to be connected.
High-voltage suspension type grid control electronic gun supply unit of the present invention adopts modularized design: grid-control power circuit block and low-voltage control circuit module.Grid-control power circuit block receives the beam frequencies signal from low-voltage control circuit module, through process, is transformed into the required gate control voltage regulated, regulation output voltage, accurately controls the beam intensity of electron beam.
Grid-control power circuit block operation principle is: grid-control power circuit block receives the regulated voltage signal from low-voltage control circuit module Fiber isolation, through F-V change-over circuit I, be converted into regulation voltage, via voltage regulation unit, the conducting degree of control voltage Correctional tube, thus the voltage that control is supplied on power stage metal-oxide-semiconductor.Power stage metal-oxide-semiconductor is under the driving of synchronous triggering signal, and the gate control voltage needed for output, is added between electron gun gate control electrode and negative electrode, controls the line size of electron beam.
Grid-control power supply actual voltage value is sampled by voltage sample circuit, process, is supplied to V-F change-over circuit I, is converted into frequency signal, drives optocoupler, exports optical frequency signals, is supplied to low-voltage control circuit module and carries out processing, showing.
Low-voltage control circuit module work principle is: low-voltage control circuit module is by the setting voltage of operating personnel, through voltage control circuit process, then via V-F change-over circuit II, be converted to corresponding frequency signal, drive optocoupler to export optical frequency signals, receive process by grid-control power circuit block.
Low-voltage control circuit module, by the light frequency voltage signal from grid-control power circuit block, via F-V change-over circuit II, is converted to voltage signal, is supplied to voltage display circuit process, drives Displaying Meter, to show real grid-control supply voltage value.
This grid-control power supply has high stability and low-ripple coefficient.High pressure suspending grid-control power circuit block achieves and controls linac grid-control rifle grid.Low-voltage control circuit module, according to the actual demand of producing, sets and regulates the gate control voltage of grid-control power module, and shows the actual value of gate control voltage in real time.The high-voltage suspension type grid control electronic gun power supply of the present invention's development have employed V-F, F-V switch technology, relate to A/D, D/A switch technology, adopt optical fiber to carry out completely isolated control simultaneously, by in depth analyzing high pressure suspending formula grid-control power supply concrete function and index parameter and study, improve the System's composition of linac high pressure suspending formula grid-control power supply, grid-control power supply and low voltage control are contacted by optical fiber, high pressure and low pressure completely isolated, achieve modularized design.
Claims (1)
1. a high-voltage suspension type grid control electronic gun supply unit, is characterized in that: comprise grid-control power circuit block and low-voltage control circuit module, is provided with fibre optic isolater between described grid-control power circuit block and described low-voltage control circuit module; Described grid-control power circuit block comprises the high voltage isolating transformer, rectification filtering unit, voltage-reg-ulator tube, power stage metal-oxide-semiconductor, the grid-control power supply that are connected in turn; Interconnective voltage regulation unit, F-V change-over circuit I is connected with between described voltage-reg-ulator tube and described fibre optic isolater; Synchronous triggering signal treatment circuit is connected with between described power stage metal-oxide-semiconductor and described fibre optic isolater; Interconnective voltage sampling unit, V-F change-over circuit I is connected with between described grid-control power supply and described fibre optic isolater; Described grid-control power supply is connected with external Grid-Controlled Electron Gun; Described low-voltage control circuit module comprises low-voltage supply, the voltage control circuit be connected with described low-voltage supply, the V-F change-over circuit II be connected with described voltage control circuit and voltage sets adjusting device; The synchronous triggering signal change-over circuit be connected with described low-voltage supply; The F-V change-over circuit II, voltage display circuit and the Displaying Meter that are connected in turn with described low-voltage supply; Described F-V change-over circuit I is corresponding with described V-F change-over circuit II to be connected; Described synchronous triggering signal treatment circuit is corresponding with described synchronous triggering signal change-over circuit to be connected; Described V-F change-over circuit I is corresponding with described F-V change-over circuit II to be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310200768.9A CN103296868B (en) | 2013-05-27 | 2013-05-27 | High-voltage suspension type grid control electronic gun supply unit |
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| CN201310200768.9A CN103296868B (en) | 2013-05-27 | 2013-05-27 | High-voltage suspension type grid control electronic gun supply unit |
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| CN103296868B true CN103296868B (en) | 2016-03-09 |
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| CN110545611B (en) * | 2019-08-09 | 2021-01-08 | 北京纳米维景科技有限公司 | Method for realizing grid control isolation and grid control circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000347000A (en) * | 1999-06-04 | 2000-12-15 | Ebara Corp | Electron beam irradiator |
| CN101178371B (en) * | 2006-11-08 | 2010-05-12 | 中国科学院沈阳科学仪器研制中心有限公司 | Electronic gun power supply for reflected high energy electron diffraction instrument |
| CN101013523A (en) * | 2007-02-09 | 2007-08-08 | 扬州双鸿电子有限公司 | High-voltage isolation apparatus of high-voltage power supply |
| CN101697451B (en) * | 2009-10-23 | 2011-08-31 | 昆明理工大学 | Linear adjustable high-voltage direct-current power supply for electromagnetic bioeffect |
| CN101825674A (en) * | 2010-05-12 | 2010-09-08 | 上海市电力公司超高压输变电公司 | Isolated high-voltage leakage current measuring method and device |
| CN102510655B (en) * | 2011-09-22 | 2014-06-04 | 湖北久瑞核技术股份有限公司 | Electron beam current control device of electron accelerator |
| CN203251222U (en) * | 2013-05-27 | 2013-10-23 | 山东蓝孚高能物理技术有限公司 | High-voltage suspended type grid control power supply device of electron gun |
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Address after: Five Ji'nan province high tech Zone, Shandong Road, No. 2711, No. 250101 Patentee after: SHANDONG VANFORM HIGH ENERGY PHYSICS TECHNOLOGY CO., LTD. Address before: Five Ji'nan province high tech Zone, Shandong Road, No. 2711, No. 250101 Patentee before: Shandong Vanform HighEnergyPhysics Technology Co., Ltd. |
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Denomination of invention: High-voltage suspension type grid control electronic gun power supply device Effective date of registration: 20170413 Granted publication date: 20160309 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd high tech branch Pledgor: SHANDONG VANFORM HIGH ENERGY PHYSICS TECHNOLOGY CO., LTD. Registration number: 2017370000040 |
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Date of cancellation: 20180508 Granted publication date: 20160309 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd high tech branch Pledgor: SHANDONG VANFORM HIGH ENERGY PHYSICS TECHNOLOGY CO., LTD. Registration number: 2017370000040 |
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Denomination of invention: High-voltage suspension type grid control electronic gun power supply device Effective date of registration: 20190830 Granted publication date: 20160309 Pledgee: Shandong Shunyuan Taishan Finance Leasing Co., Ltd. Pledgor: SHANDONG VANFORM HIGH ENERGY PHYSICS TECHNOLOGY CO., LTD. Registration number: Y2019370000025 |
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Date of cancellation: 20220519 Granted publication date: 20160309 Pledgee: Shandong Shunyuan Taishan Finance Leasing Co.,Ltd. Pledgor: SHANDONG VANFORM HIGH ENERGY PHYSICS TECHNOLOGY Co.,Ltd. Registration number: Y2019370000025 |