CN207414577U - A kind of rail welding electron beam welding machine electric power system - Google Patents
A kind of rail welding electron beam welding machine electric power system Download PDFInfo
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- CN207414577U CN207414577U CN201721321249.8U CN201721321249U CN207414577U CN 207414577 U CN207414577 U CN 207414577U CN 201721321249 U CN201721321249 U CN 201721321249U CN 207414577 U CN207414577 U CN 207414577U
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- filament
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Abstract
The utility model belongs to power-supply device technical field, disclose a kind of rail welding electron beam welding machine electric power system, one stable high voltage electrostatic field of formation in electron gun is provided with, the electronics that filament is sent accelerates, and the electronics is made to reach the light velocity or the high voltage power supply close to the light velocity；Continuously adjustable voltage is exported, adjusts the grid bias power supply system of electron beam line size；Heating to electron gun filament, make electron gun filament be heated after launching electronics, the output voltage of filament heating power supply is made to reach spilling electronics, indirectly adjust electronic beam current size filament supply system；High voltage power supply, grid bias power supply system and filament supply system are linked together by the common port of output.The utility model reduces switching loss, reduces power-supply system volume and weight, meets the needs of the electron beam welding for rail welding.
Description
Technical field
The utility model belongs to power-supply device technical field more particularly to a kind of rail welding electron beam welding machine electric power system
System.
Background technology
At present, electron beam welding technology is a kind of high energy beam machining technology of noncontact processing.It utilizes quiet through high pressure
Electric field and electromagnetic field accelerate to implement various special processing to workpiece or material as heat source with the high-energy electron stream assembled.
Since electron beam welding has many advantages, such as that welding energy density is high, welding seam deep width ratio is big, welding efficiency is high, weld seam is not oxidizable,
Electron beam welding technology is widely used.
By some researchs of early period, rail is welded using electron-beam welder, electron beam welding is welded for rail
The high-quality welded joint that can be obtained not less than base material performance is connect, and is expected to fundamentally solve present in existing rail welding method
The problem of, realize efficient, the high-quality and green welding of rail.
Important component of the power-supply system as electron-beam welder, the mainly work for electron gun provide the energy, right
The quality of welding plays conclusive effect.Design stabilization work of a set of reliable and stable power-supply system to a whole set of electron-beam welder
It has a very important significance
In conclusion problem existing in the prior art is：Existing rail welding electron beam welding machine electric power system cannot subtract
The harmonic wave that few power tube is generated in the case where opening at a high speed, turn off, causes switching loss amount big；And the power-supply system body of the prior art
Product and weight are heavy.The needs of the electron beam welding for rail welding cannot be met.
The content of the invention
In view of the problems of the existing technology, the utility model provides a kind of rail welding electron beam welding machine electric power system
System.
A kind of the utility model is realized in this way rail welding electron beam welding machine electric power system, which is characterized in that institute
Stating rail welding electron beam welding machine electric power system includes：
A stable high voltage electrostatic field is formed in electron gun, the electronics that filament is sent accelerates, and reaches the electronics
The light velocity or the high voltage power supply close to the light velocity；
Continuously adjustable voltage is exported, adjusts the grid bias power supply system of electron beam line size；
Heating to electron gun filament, make electron gun filament be heated after launching electronics, make filament heating power supply output electricity
Pressure reaches spilling electronics, indirectly adjusts the filament supply system of electronic beam current size；
The high voltage power supply, grid bias power supply system and filament supply system are connected to one by the common port of output
It rises.
Further, the common port of the output is the common port of negative 70kV.
Further, the rail welding is specifically included with electron beam welding machine electric power system：
EMC wave filters, rectification circuit, BUCK circuits, inverter circuit, LC resonance circuit, high-tension transformer, high-voltage rectifying filter
Wave circuit simultaneously passes through printed line and is sequentially connected.
Further, the rail welding further includes biasing transformer, filament transformer, event with electron beam welding machine electric power system
Hinder integrated treatment circuit, PWM Drive Protecting Circuits, control circuit；The biasing transformer, filament transformer are connected by printed line
Connect LC resonance circuit, high-voltage rectifying filter circuit；Wherein, rectification circuit can not control rectifying circuit for bridge-type.Inverter circuit is bridge
Formula inverter circuit.LC resonance circuit is LC resonance converter.
The fault comprehensive process circuit connects PWM Drive Protecting Circuits, control circuit by printed line respectively；
The control circuit is also connected with PWM Drive Protecting Circuits by printed line.
Further, the rail welding further includes electron gun with electron beam welding machine electric power system, and the electron gun passes through plate
Line connects high-voltage rectifying filter circuit.
The rail welding further includes industrial computer with electron beam welding machine electric power system；The industrial computer passes through letter
Number line connection control circuit.
Further, the rectification circuit, BUCK circuits, inverter circuit, LC resonance circuit are three sets.
The advantages of the utility model and good effect are：
The utility model analyzes rail welding with the power-supply system composition of electron-beam welder.Using Sofe Switch skill
Art reduces the harmonic wave that power tube is generated in the case where opening at a high speed, turn off, and reduces switching loss, reduce power-supply system volume and
Weight.Selection and Design has been carried out to the critical piece of power-supply system, hookup has been built, has worked out control software, by right
The debugging of principle prototype, obtains test parameters, demonstrates the reasonability of design, meets the electron beam weldering for rail welding
The needs connect.
Description of the drawings
Fig. 1 is the high voltage power supply circuit diagram that the utility model embodiment provides.
Fig. 2 is the filament supply system circuit diagram that the utility model embodiment provides.
Fig. 3 is the grid bias power supply system circuit diagram that the utility model embodiment provides.
Fig. 4 is the rail welding electron beam welding machine electric power system block diagram that the utility model embodiment provides.
In figure：1st, EMC wave filters；2nd, rectification circuit；3rd, BUCK circuits；4th, inverter circuit；5th, LC resonance circuit；6th, high pressure
Transformer；7th, high-voltage rectifying filter circuit；8th, fault comprehensive process circuit；9th, PWM Drive Protecting Circuits；10th, control circuit；
11st, electron gun；12nd, industrial computer.
Fig. 5 is the rough schematic view for the LC resonance converter full-bridge circuit that the utility model embodiment provides.
Fig. 6 is that the control circuit that the utility model embodiment provides interrupts flow chart.
Specific embodiment
For that can further appreciate that the invention, features and effects of the utility model, the following examples are hereby given, and coordinates
Detailed description are as follows for attached drawing.
The structure of the utility model is explained in detail below in conjunction with the accompanying drawings.
As shown in Figures 1 to 4, the rail welding electron beam welding machine electric power system bag that the utility model embodiment provides
It includes：
A stable high voltage electrostatic field is formed in electron gun, the electronics that filament is sent accelerates, and reaches the electronics
The light velocity or the high voltage power supply close to the light velocity；
Continuously adjustable voltage is exported, adjusts the grid bias power supply system of electron beam line size；
Heating to electron gun filament, make electron gun filament be heated after launching electronics, make filament heating power supply output electricity
Pressure reaches spilling electronics, indirectly adjusts the filament supply system of electronic beam current size；
The high voltage power supply, grid bias power supply system and filament supply system are connected to one by the common port of output
It rises.
The common port of the output is the common port of negative 70kV.
The rail welding is specifically included with electron beam welding machine electric power system：
EMC wave filters 1, rectification circuit 2, BUCK circuits 3, inverter circuit 4, LC resonance circuit 5, high-tension transformer 6, high pressure
Current rectifying and wave filtering circuit 7 simultaneously passes through printed line and is sequentially connected.
The rail welding further includes biasing transformer, filament transformer, fault comprehensive with electron beam welding machine electric power system
Process circuit 8, PWM Drive Protecting Circuits 9, control circuit 10；The biasing transformer, filament transformer are connected by printed line
LC resonance circuit, high-voltage rectifying filter circuit；Wherein, rectification circuit can not control rectifying circuit for bridge-type.Inverter circuit is bridge-type
Inverter circuit.LC resonance point road is LC resonance converter.
The fault comprehensive process circuit 8 connects PWM Drive Protecting Circuits 9, control circuit 10 by printed line respectively；
The control circuit 10 is also connected with PWM Drive Protecting Circuits 9 by printed line.
The rail welding further includes electron gun 11 with electron beam welding machine electric power system, and the electron gun is connected by printed line
High-voltage rectifying filter circuit.
The rail welding further includes industrial computer 12 with electron beam welding machine electric power system；The industrial computer passes through
Signal wire connects control circuit.
The rectification circuit 2, BUCK circuits 3, inverter circuit 4, LC resonance circuit 5 are three sets.
The utility model is further described with reference to circuit theory.
There are one negative 70kV for the output of the high voltage power supply of the utility model, grid bias power supply system and filament supply system
Common port, three power supplys are connected together.Electron beam high pressure accelerating power source is used to form a stabilization in electron gun
High-voltage electrostatic field, the electronics that filament is sent accelerate, and reach the light velocity or close to the light velocity；Filament heating power supply is mainly used for pair
The heating of electron gun filament, launching electronics after making it heated, the output voltage of control filament heating power supply can reach Control strain
The purpose of electronics, so as to indirectly control electronic beam current size；Grid bias power supply exports continuously adjustable voltage within the specific limits,
So as to accurately adjust electron beam line size.The main circuit of power-supply system by EMC wave filters, bridge-type can not control rectifying circuit,
The compositions such as BUCK circuits, bridge inverter main circuit, LC resonance converter, high-tension transformer, high-voltage rectifying filter circuit.High voltage power supply
Transformation of electrical energy process it is as follows：The three-phase alternating voltage of 380V is filtered by EMC filter circuit；Pass through rectifying and wave-filtering
It is become steady dc voltage by circuit；The adjusting of DC bus-bar voltage is carried out by BUCK circuits；Pass through full-bridge inverting electricity
Realize conversion of the DC voltage to the alternating voltage of high frequency in road；Voltage is divided by LC resonance circuit again；Finally by
High frequency high voltage transformer boosts, and electron gun is supplied to by high voltagehigh frequency rectification, filtering output high voltage direct current.Filament electricity
Source is similar with high voltage power supply with the transformation of electrical energy process of grid bias power supply.Industrial computer provides specifically according to the needs of welding procedure
Control signal, control circuit are realized to IGBT switching frequencies by Drive Protecting Circuit after receiving control instruction and open duty
The control of ratio, the final control realized to being loaded into the electric energy on electron gun.Fault comprehensive process circuit passes through to feedback signal
Real-time monitoring realize the protection and troubleshooting of power-supply system.
The utility model is further described with reference to the operation principle of LC resonance converter.
In order to improve the work efficiency of power supply, reduce the volume and weight of power supply, IGBT is made to be operated in Sofe Switch state, from
And introduce LC resonance converter technique.LC series resonant converters have 3 kinds of working methods：(1)fS＜ fr/2, discontinuous current work
Mode (DCM), Sofe Switch state, zero current turning-on, zero current or zero voltage turn-off；(2) fr/2 ＜ fS＜ fr, the continuous work of electric current
Make mode (CCM), resonant tank is in capacitive；(3)fS＞ fr, electric current continuous operation mode (CCM), resonant tank is in perception.
Fig. 5 is the rough schematic view of LC resonance converter full-bridge circuit, and resonant inductance Lr and resonant capacitance Cr is common in figure
Constitute resonator circuit, it can be seen that resonator with load for voltage relation, by change the value of resonant frequency come
Changing the impedance of resonator, this impedance will share input voltage together with load, and in resonance point, resonance cavity impedance is very small,
Thus all input voltages are all applied in load, and resonator has maximum gain at this time.The wherein resonance in LC resonance circuit
Frequency isFor IGBT, no-voltage modal loss smaller is operated in.Therefore in order to make switching tube
Realize zero voltage switch, electric current should lag behind voltage to switching tube at work, must thus resonant tank be made to work always
In the state of perception.
The utility model is described further with reference to controlling software design.
The dsp chip model TMS320F2812 that the utility model power-supply system is selected, possesses powerful incident management work(
Can, including two task managers EVA and EVB, there are GP, comparing unit, capturing unit and QEP circuits.It is only that 4 tunnels can be exported
Totally 6 pairs of complementary pwm signals have 16 road pwm signals altogether for vertical pwm signal and 12 tunnels, can reach the design requirement of system.
Power control circuit is by the way of PWM and PFM mixing controls：ADC module inside dsp chip first will be from power supply
The input voltage signal and feedback voltage signal that output terminal acquisition comes are stored after carrying out analog-to-digital conversion to result register, and DSP will
Input voltage computing compared with feedback voltage that sampling comes, the deviation drawn according to operation result are obtained again by PI algorithms
Corresponding PWM value, while result of calculation is returned to the suitable PWM waveform of task manager EV generations and is exported to IGBT driving electricity
Road, control power switch pipe IGBT are turned on and off, so as to fulfill closed-loop control, realize to power-supply system it is quick adjust and
Stability contorting.Fig. 6 interrupts flow chart for its control circuit.
The utility model is further described with reference to conclusion.
Comprehensive analysis has been carried out with the high voltage power supply of electron-beam welder, grid bias power supply and filament supply to rail welding.It is logical
The analysis to power-supply system hardware components and control system is crossed, suitable hardware circuit is devised and control mode reduces power supply
Volume, and improve the multinomial performance index of power supply, realize the requirement of electron-beam welder power efficient high performance mini.It should
Set power-supply system provides technological reserve for the development of a whole set of rail local vacuum electron beam welding machine, will promote advanced high energy electricity
Beamlet welding method is in the application of China railways industry.
The above is only the preferred embodiment to the utility model, and not the utility model is made in any form
Limitation, it is every according to the technical essence of the utility model to any simple modification made for any of the above embodiments, equivalent variations with
Modification, belongs in the range of technical solutions of the utility model.
Claims (7)
- A kind of 1. rail welding electron beam welding machine electric power system, which is characterized in that rail welding electron-beam welder electricity Source system includes：A stable high voltage electrostatic field is formed in electron gun, the electronics that filament is sent accelerates, and the electronics is made to reach the light velocity Or the high voltage power supply close to the light velocity；Continuously adjustable voltage is exported, adjusts the grid bias power supply system of electron beam line size；Heating to electron gun filament, make electron gun filament be heated after launching electronics, reach the output voltage of filament heating power supply To electronics is overflowed, the filament supply system of electronic beam current size is indirectly adjusted；The high voltage power supply, grid bias power supply system and filament supply system are linked together by the common port of output.
- 2. rail welding as described in claim 1 electron beam welding machine electric power system, which is characterized in that the output it is public It holds to bear the common port of 70kV.
- 3. rail welding as described in claim 1 electron beam welding machine electric power system, which is characterized in that the rail welding is used Electron-beam welder power-supply system specifically includes：EMC wave filters, rectification circuit, BUCK circuits, inverter circuit, LC resonance circuit, high-tension transformer, high-voltage rectifying filtered electrical Road simultaneously passes through printed line and is sequentially connected.
- 4. rail welding as claimed in claim 3 electron beam welding machine electric power system, which is characterized in that the rail welding is used Electron-beam welder power-supply system further includes biasing transformer, filament transformer, fault comprehensive process circuit, PWM driving protection electricity Road, control circuit；The biasing transformer, filament transformer connect LC resonance circuit, high-voltage rectifying filtered electrical by printed line Road；The fault comprehensive process circuit connects PWM Drive Protecting Circuits, control circuit by printed line respectively；The control circuit is also connected with PWM Drive Protecting Circuits by printed line.
- 5. rail welding as claimed in claim 3 electron beam welding machine electric power system, which is characterized in that the rail welding is used Electron-beam welder power-supply system further includes electron gun, and the electron gun connects high-voltage rectifying filter circuit by printed line.
- 6. rail welding as claimed in claim 4 electron beam welding machine electric power system, which is characterized in that the rail welding is used Electron-beam welder power-supply system further includes industrial computer；The industrial computer connects control circuit by signal wire.
- 7. rail welding as claimed in claim 3 electron beam welding machine electric power system, which is characterized in that the rectification circuit, BUCK circuits, inverter circuit, LC resonance circuit are three sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721321249.8U CN207414577U (en) | 2017-10-13 | 2017-10-13 | A kind of rail welding electron beam welding machine electric power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721321249.8U CN207414577U (en) | 2017-10-13 | 2017-10-13 | A kind of rail welding electron beam welding machine electric power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207414577U true CN207414577U (en) | 2018-05-29 |
Family
ID=62311170
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721321249.8U Expired - Fee Related CN207414577U (en) | 2017-10-13 | 2017-10-13 | A kind of rail welding electron beam welding machine electric power system |
Country Status (1)
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| CN (1) | CN207414577U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478596A (en) * | 2020-01-15 | 2020-07-31 | 华中科技大学 | Electron gun filament power supply, electron accelerator and control method thereof |
-
2017
- 2017-10-13 CN CN201721321249.8U patent/CN207414577U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478596A (en) * | 2020-01-15 | 2020-07-31 | 华中科技大学 | Electron gun filament power supply, electron accelerator and control method thereof |
| CN111478596B (en) * | 2020-01-15 | 2021-04-20 | 华中科技大学 | Electron gun filament power supply, electron accelerator and control method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20181013 |