CN105345248A - Handheld electronic beam welding power source for space on-orbit welding - Google Patents

Handheld electronic beam welding power source for space on-orbit welding Download PDF

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Publication number
CN105345248A
CN105345248A CN201510859823.4A CN201510859823A CN105345248A CN 105345248 A CN105345248 A CN 105345248A CN 201510859823 A CN201510859823 A CN 201510859823A CN 105345248 A CN105345248 A CN 105345248A
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current
voltage
value
circuit
connects
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CN201510859823.4A
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CN105345248B (en
Inventor
曾如川
刘战捷
韦寿祺
魏松
祁俊峰
张加波
刘鑫
朱国坤
黄小东
张建飞
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Beijing Satellite Manufacturing Factory Co Ltd
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Beijing Satellite Manufacturing Factory Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/02—Control circuits therefor

Abstract

The invention discloses a handheld electronic beam welding power source for space on-orbit welding. The handheld electronic beam welding power source for space on-orbit welding comprises a filter circuit, a filament inverter circuit, a high-voltage inverter circuit, a high-voltage inverter controller, a filament inverter controller, a focus circuit and a fault synthesizer, wherein the filter circuit is used for filtering a 100V direct-current power supply and then transmitting the 100V direct-current power supply to the filament inverter circuit and the high-voltage inverter circuit; the filament inverter circuit generates 100V alternating current and transformer pre-stage current sampling values; the high-voltage inverter circuit generates high voltage sampling samples, electronic beam current sampling values and transformer pre-stage voltage sampling values; the high-voltage inverter controller is used for adjusting PWM pulse width of the high-voltage inverter circuit; the filament inverter controller is used for adjusting PWM pulse width of the filament inverter circuit; the focus circuit is used for enabling an electronic gun to form high-energy beam current; the fault synthesizer is used for controlling the high-voltage inverter controller, the filament inverter controller and the focus circuit. Through the handheld electronic beam welding power source, the safety of the electronic beam welding power source is improved; meanwhile, the power supply also has the advantage of simplicity in circuit implementation.

Description

A kind of hand-held electronic bundle source of welding current for space-orbit welding
Technical field
The present invention relates to electron-beam welding equipment, particularly a kind of hand-held electronic bundle source of welding current for space-orbit welding.
Background technology
Because space environment is complicated, harsh, spacecraft is easily subject to the impacts such as temperature alternating, ionizing radiation, Space Particle or impact from space debris, Technique in Rendezvous and Docking and deep space probe landing shock in process for a long time in orbit, and structure exists damage risk.Electron beam welding technology self needs vacuum environment, is particularly suitable for the welding under space environment, and electron beam can be used for the welding, solder brazing, solder, cutting, repairing etc. of conductive material as a good thermal source of controlling.During electron beam heating the fusion zone of material and heat affected area all narrow, efficiency is higher than other welding methods a lot.In addition its welding deformation is also very little, this for space large scale structure manufacture be very important, therefore the application of electron beam under space environment shows good prospect at present.
Space electronic bundle welding equipment mainly comprises electron gun, electron beam power supply two parts as shown in Figure 1, wherein, electron gun is divided into electrostatic district and lens region two parts, negative electrode has filament to be mainly used in electron emission, after between negative electrode and anode, high pressure accelerates, from anode, aperture is launched, and after the focus coil through lens region focuses on, impinges upon on workpiece and welds.The domestic and international research to the space electronic bundle source of welding current is little at present, the equipment voltage of the electron beam power supply on ground is generally 50-150kV, voltage is high, volume is heavy, energy consumption is high, be unsuitable for the use of space hand-held electron gun, therefore need a kind ofly to be applicable to the space-orbit hand-held electronic bundle source of welding current welded in-orbit.
Summary of the invention
The technical problem that the present invention solves is: overcome the deficiencies in the prior art, provide a kind of on push-pull type single-phase inversion circuit base, realize voltage modulation and comprise the hand-held electronic bundle source of welding current for space-orbit welding transformer prime electric current, high tension voltage, electronic beam current, focus current being carried out to real-time guard detection of filament inverter circuit and high-voltage inverter circuit.
Technical solution of the present invention is: a kind of hand-held electronic bundle source of welding current for space-orbit welding, comprise filter circuit, filament inverter circuit, high-voltage inverter circuit, high-voltage inverted controller, filament inverter controller, focus circuit, fault comprehensive device, wherein
Filter circuit, the 100V dc source of the outside input of access, utilizes π type filter circuit to carry out filtering and removes high-frequency electromagnetic interfering signal, deliver to filament inverter circuit, high-voltage inverter circuit after obtaining filtered 100V direct current;
Filament inverter circuit, receive the PWM drive singal Uc1 that filament inverter controller sends, and change the 100V direct current of input into 100V alternating current according to PWM drive singal Uc1, output transformer prime current sampling data Ud1 simultaneously, 100V alternating current is delivered to the filament of electron gun, transformer prime current sampling data Ud1 is delivered to filament inverter controller, fault comprehensive device;
High-voltage inverter circuit, receive the PWM drive singal Uc2 that high-voltage inverted controller sends, and change the 100V direct current of input into 100V alternating current according to PWM drive singal Uc2, output transformer prime voltage sample value Ud2 simultaneously, 100V alternating current is carried out boosting and becomes 10kV direct current, gather the galvanic voltage of 10kV and be designated as high tension voltage sampled value Ua, gather the galvanic electric current of 10kV and be designated as electronic beam current sampled value Ub, high tension voltage sampled value Ua is delivered to high-voltage inverted controller, fault comprehensive device, electronic beam current sampled value Ub is delivered to filament inverter controller, fault comprehensive device, transformer prime voltage sample value Ud2 is delivered to fault comprehensive device,
High-voltage inverted controller, produces and exports PWM drive singal Uc2 to high-voltage inverter circuit; Receive external high pressure voltage setting value Ua *, according to external high pressure voltage setting value Ua *pI adjustment is carried out to high tension voltage sampled value Ua, obtains a PI and regulate result, regulate the PWM pulsewidth of result adjustment high-voltage inverter circuit according to a PI, keep 10kV DC voltage to stablize; When receiving guard signal Ue and guard signal Ue is high level, close;
Filament inverter controller, produces and exports PWM drive singal Uc1 to filament inverter circuit; Receive external electrical line setting value Ub *, obtain internal filaments current setting value Uf *, according to external electrical line setting value Ub *, transformer prime current sampling data Ud1, internal filaments current setting value Uf *pI is carried out to electronic beam current sampled value Ub and regulates process, obtain the 2nd PI and regulate result, regulate the PWM pulsewidth of result adjustment filament inverter circuit according to the 2nd PI, keep the filament of electron gun to export line and stablize; When receiving guard signal Ue and guard signal Ue is high level, close;
Focus circuit, obtains outside focus current setting value Uh *, according to outside focus current setting value Uh *regulate focus coil current, make electron gun form high energy beam current, collection focus coil current obtains focus current sampled value Ud3 and delivers to fault comprehensive device simultaneously; When receiving guard signal Ue and guard signal Ue is high level, close;
Fault comprehensive device, receiving transformer prime current sampling data Ud1, transformer prime voltage sample value Ud2, high tension voltage sampled value Ua, electronic beam current sampled value Ub, obtain transformer prime current sampling data Ud1 after focus current sampled value Ud3 respectively and set protection value, transformer prime voltage sample value Ud2 sets protection value, high tension voltage sampled value Ua sets protection value, electronic beam current sampled value Ub sets protection value, focus current sampled value Ud3 sets protection value and judges respectively, if transformer prime current sampling data Ud1, transformer prime voltage sample value Ud2, high tension voltage sampled value Ua, electronic beam current sampled value Ub or focus current sampled value Ud3 exceeds corresponding setting protection value, then output protection signal Ue is to high pressure inverter controller, filament inverter controller and focus circuit, by high-voltage inverted controller, filament inverter controller and focus circuit are closed, and wherein, transformer prime current sampling data Ud1 sets protection value, transformer prime voltage sample value Ud2 sets protection value, high tension voltage sampled value Ua sets protection value, electronic beam current sampled value Ub sets protection value, focus current sampled value Ud3 sets protection value and arranges arbitrarily by outside.
Described filter circuit comprises diode D1, inductance L 1, electric capacity C1; Diode D1 positive pole connects 100V DC power cathode, filtered 100V direct current negative pole, diode D1 negative pole is connected with 100V DC power anode, inductance L 1 one termination 100V DC power anode, another termination filtered 100V direct current positive pole, electric capacity C1 one end, another termination 100V DC power cathode of electric capacity C1, filtered 100V direct current connects filament inverter circuit, high-voltage inverter circuit.
Described high-voltage inverter circuit comprises fuse F1, power tube Q1, power tube Q2, high-voltage power tube drive circuit, piezo-resistance Ry1, piezo-resistance Ry2, step-up transformer T1, resistance R1, R2, R3, R4, electric capacity C2, high-voltage rectifier bridge, high pressure choke, high pressure choke comprises inductance L 2, inductance L 3, diode D2, diode D3, and power tube Q1, power tube Q2, transformer T1, piezo-resistance Ry1, piezo-resistance Ry2 form push-pull type single-phase inversion circuit, fuse F1 mono-termination filtered 100V direct current anode, the centre tap that another termination step-up transformer T1 is elementary, high-voltage power tube drive circuit produces driving pulse g1 after receiving PWM drive singal Uc2, driving pulse g2, driving pulse g1 connects the base stage of power tube Q1, driving pulse g1 connects the base stage of power tube Q2, R1 mono-termination filtered 100V direct current negative terminal ground connection, the other end and Q1, the emitter stage of Q2 connects, and output transformer prime voltage sample value Ud2, step-up transformer T1 level two ends connect high-voltage rectifier bridge, L2 and D2 is in parallel, high pressure choke is composed in series after L3 and D3 parallel connection, Absorption Capacitance C2 is in parallel with high-voltage rectifier bridge, resistance R2 mono-termination 10kV direct current negative pole, other end connecting resistance R3, resistance R3 mono-termination 10kV direct current positive pole ground connection, other end connecting resistance R2 also exports high tension voltage sampled value Ua, resistance R4 mono-termination 10kV direct current positive pole, another terminated high voltage choke, and export electronic beam current sampled value Ub, high tension voltage sampled value Ua connects high-voltage inverted controller, fault comprehensive device, electronic beam current sampled value Ub connects filament inverter controller, fault comprehensive device, transformer prime voltage sample value Ud2 connects fault comprehensive device.
Described high-voltage inverted controller comprises a PI regulating circuit, the first PWM generator; External high pressure voltage setting value Ua *generate High Pressure Difference value signal Δ Ua with high tension voltage sampled value Ua, and connect PI regulating circuit, obtain being input in PWM generator after a PI regulates result; produce filament PWM drive singal Uc2; guard signal Ue connects PWM generator, and when Ue is high level, PWM generator turns off.
Described filament inverter circuit comprises fuse F2, power tube Q3, power tube Q4, filament wattage tube drive circuit, piezo-resistance Ry3, piezo-resistance Ry4, transformer T2, resistance R5, power tube Q3, power tube Q4, transformer T2, piezo-resistance Ry3, piezo-resistance Ry4 form push-pull type single-phase inversion circuit, fuse F2 mono-termination 100V direct current positive pole, the centre tap that another termination transformer T2 is elementary, filament wattage tube drive circuit produces driving pulse g3 after meeting PWM drive singal Uc1, driving pulse g4, driving pulse g3 connects the base stage of Q3, driving pulse g4 connects the base stage of Q4, R5 mono-termination 100V direct current negative pole ground connection, the other end respectively with Q3, the emitter stage of Q4 connects, and output current sampled signal Ud1, the secondary of transformer T2 connects 100V alternating current, and deliver to the filament of electron gun, transformer prime current sampling data Ud1 connects filament inverter controller, fault comprehensive device.
Described filament inverter controller comprises the 2nd PI regulating circuit, the 3rd PI regulating circuit, the second PWM generator; External electrical line setting value Ub *generate line difference signal Δ Ub with electronic beam current sampled value Ub, and connect the 2nd PI regulating circuit, produce line conditioning signal Ub1, line conditioning signal Ub1, internal filaments current setting value Uf *, transformer prime current sampling data Ud1 generates heater current difference signal Δ Uf; and connect the 3rd PI regulating circuit; produce heater current conditioning signal Uf1; heater current conditioning signal Uf1 is input to the second PWM generator; produce filament PWM drive singal Uc1 to filament inverter circuit; second PWM generator meets guard signal Ue, turns off when Ue is high level.
Described focus circuit comprises diode D4, power tube Q5, resistance R6, the 4th PI regulating circuit, the 3rd PWM generator, focus coil; Diode D4 is in parallel with focus coil, and diode D4 negative pole connects+15V power supply, and positive pole connects the colelctor electrode of power tube Q5, resistance R6 one end ground connection, and the other end connects the emitter stage of power tube Q5 and exports focus coil sample rate current Ud3, focus current setting value Uh *, focus current sampled value Ud3 generates focus current difference signal Δ Uh; and meet the 4th PI regulating circuit generation focus current conditioning signal Uh1; focus current conditioning signal Uh1 is input to the 3rd PWM generator; produce drive singal Uc3; drive singal Uc3 connects the base stage of power tube Q5; focus current sampled value Ud3 connects fault comprehensive device, and the 3rd PWM generator meets guard signal Ue, turns off when Ue is high level.
Described fault comprehensive device comprises the first comparator, the second comparator, the 3rd comparator, the 4th comparator, the 5th comparator, resistance R7, resistance R8, resistance R9, resistance R10, resistance R11 or gate; Transformer prime current sampling data Ud1 connects the first comparator positive input terminal, and transformer prime current sampling data Ud1 sets protection value Ud1 *connect the first comparator negative input end; resistance R7 one end connection+15V, another termination first comparator output terminal, and connect or gate first via input; transformer prime voltage sample value Ud2 connects the second comparator positive input terminal, and transformer prime voltage sample value Ud2 sets protection value Ud2 *connect the second comparator negative input end; resistance R8 one end connection+15V, the other end connects the second comparator output terminal, and connects or gate second road input; focus current sampled value Ud3 connects the 3rd comparator positive input terminal, and focus current sampled value Ud3 sets protection value Ud3 *connect the 3rd comparator negative input end; resistance R9 one end connection+15V, the other end connects the 3rd comparator output terminal, and connects or the logic family status three road input; high tension voltage sampled value Ua connects the 4th comparator positive input terminal, and high tension voltage sampled value Ua sets protection value Ud4 *connect the 4th comparator negative input end; resistance R10 one end connection+15V, the other end connects the 4th comparator output terminal, and connects or the logic family status four road input; electronic beam current sampled value Ub connects the 5th comparator positive input terminal, and electronic beam current sampled value Ub sets protection value Ud4 *connect the 5th comparator negative input end, resistance R11 mono-termination+15V, another termination the 5th comparator output terminal, and connect or the logic family status five road input, or gate output protection signal Ue is to high pressure inverter controller, filament inverter controller and focus circuit.
Described external high pressure voltage setting value Ua *span be [0-10kV], external electrical line setting value Ub *span be [0-150mA], outside focus current setting value Uh *span be [0.5-2A].
The present invention's advantage is compared with prior art:
(1) the present invention compared with prior art, by being optimized the existing electron beam welding power supply in ground, electron beam supply voltage scope is made to reduce to 0-10kV, while the security adding electron beam welding power supply, also there is the simple advantage of circuit realiration, decrease power supply circuit devcie used, reduce the volume and weight of power-supply device, be more applicable for space-orbit welding;
(2) the present invention compared with prior art, push-pull type single-phase inversion circuit base realizes the modulation of voltage, comprise filament inverter circuit and high-voltage inverter circuit, achieve fuse protection, overcurrent protection, overvoltage protection, real-time guard detection is carried out to transformer prime electric current, high tension voltage, electronic beam current, focus current, ensure that the stability of power supply;
(3) the present invention compared with prior art, focused on by coil, the focus of electronic beam current concentrated near rifle head, can realize electron beam welding in-orbit preferably, meet the instructions for use in space.
Accompanying drawing explanation
Fig. 1 is hand-held electronic bundle power supply and two pole electron beam gun wiring diagrams;
The hand-held electronic bundle source of welding current structural representation of a kind of space-orbit welding of Fig. 2 the present invention;
Fig. 3 is filter circuit structural representation of the present invention;
Fig. 4 is mesohigh inverter circuit structural representation of the present invention;
Fig. 5 is mesohigh inverter controller structural representation of the present invention;
Fig. 6 is mesohigh inverter circuit drive pulse waveform schematic diagram of the present invention;
Fig. 7 is filament inverter circuit structural representation in the present invention;
Fig. 8 is filament inverter controller structural representation in the present invention;
Fig. 9 is filament inverter circuit drive pulse waveform schematic diagram in the present invention;
Figure 10 is focus circuit structural representation in the present invention;
Figure 11 is fault comprehensive device electrical block diagram in the present invention.
Detailed description of the invention
Space Electron beam welding device for by rocket launching to space, bear complete equipment in space by astronaut and carry out welding operation, thus lightweight, volume little be the key index of space portable electronic bundle welder.With conventional electrical bundle welding equipment unlike, space electronic bundle welding equipment adopts directly-heated type secondary rifle as shown in Figure 1, electron gun is made up of negative electrode, anode, focusing magnetic lenses, decreases the parts such as gate valve, observing system, deflection scanning coil, sympodium coil.In addition, in order to ensure the personal security using electron beam gun in space, the highest 10kV of voltage of high pressure accelerating power source, electron gun power supply mates with electron gun, because the highest 10kV of electron gun supply voltage is far below conventional electrical bundle power supply, and decrease the part such as deflection scanning coil, sympodium coil, the volume of power supply can do very little, and gross weight is no more than 15kg.
As shown in Figure 2, the hand-held electronic bundle source of welding current of the present invention mainly comprises filter circuit, high-voltage inverter circuit, filament inverter circuit, high-voltage inverted controller, filament inverter controller, focus circuit, fault comprehensive device, wherein, it is the accelerating potential of 10kV that boost in voltage is accessed by the control of high-voltage inverted controller in the space of 100V by high-voltage inverter circuit part, and high-voltage inverted controller is by high pressure sampled value Ua and high tension voltage setting value Ua *adopt the stable of PI feedback regulation control voltage, filament inverter circuit part utilizes the input power of filament inverter controller control 100V to change into and exchanges for filament heating, makes filament emission electronics, by electronic beam current sampled value Ub, electronic beam current setting value Ub *with heater current setting value Uf *synthesis result regulate the average current of filament, thus reach the object regulating line size.
The concrete connected mode of one of filter circuit is as shown in Figure 3: by diode D1, inductance L 1 and electric capacity C1 form π shape filter circuit, suppress the transmission of high-frequency electromagnetic interfering signal, power supply supplies filament inverter circuit, high-voltage inverter circuit and focus circuit respectively after filter circuit process.
The concrete connected mode of one of high-voltage inverter circuit is as shown in Figure 4: form push-pull type single-phase inversion circuit by power tube Q1 and power tube Q2, input (201) connects positive pole, input (202) connects negative pole, positive pole is connected a fuse F1, when problems such as internal short-circuits, fuse F1 fuses by the short circuit current of overload, prevents high-voltage inverter circuit from impacting other parts.The High-voltage PWM converter drive singal Uc2 come from high-voltage inverter circuit transmission produces two-way drive singal g1 and g2 driving power pipe Q1 and power tube Q2 respectively, drive singal g1 is identical with g2 frequency and fixing, frequency is 20kHz, phase 180 °, pulsewidth is identical, drive singal g1 and g2 transfer process is arranged to the minimum Dead Time of about 2 μ s.Resistance R2 is high-tension transformer T1 primary current sampling resistor, and exports high-voltage inverter circuit current feedback signal Ud2.Piezo-resistance Ry1 and piezo-resistance Ry2 is high-tension transformer T1 armature winding leakage reactance discharge loop.Transformer T1 level connects rectifier bridge (22), and electric capacity C2 is the Absorption Capacitance of rectifier bridge (22), prevents puncturing of high-voltage rectifier bridge.L2 and D2 and L3 and D3 form high pressure choke (23), for suppressing electron gun electrion current rise rate, are conducive to suppressing the disturbance current caused by parasitic capacitance between the elementary and secondary windings of high-tension transformer T1 simultaneously.R2 and R3 forms high pressure sample circuit, Ua=R3/ (R2+R3) U outif, U outfor voltage between output (203) and (204).Resistance R4 is high-tension transformer T1 secondary current sampling resistor, and exports electronic beam current sampled value Ub.Push-pull type single-phase inversion circuit is adopted to reduce half than the loss of H-bridge inverter circuit inverter power tube, push-pull type single-phase inversion circuit is at half than single-phase semi-bridge inversion power tube operating current, power consumption is also little, the drive circuit of push-pull type single-phase inversion circuit does not need isolation in addition, circuit is simple and reliable, what high-voltage inverter circuit negative pole exported with filament is connected, and high-voltage inverter circuit positive pole is connected with rifle body and connects and shields ground.
The logic control process of high-voltage inverted controller as shown in Figure 5, Ua *be high pressure set point and Ua be high pressure sampled value, Δ Ua=Ua *-Ua; generate high-voltage regulation signal Ua1 by PI regulating circuit (31) and be transferred to PWM generator (32); generate High-voltage PWM converter drive singal Uc2; driving pulse g1, g2 are as shown in Figure 6; pwm signal receives the power protection signal Ue come from the transmission of fault comprehensive device simultaneously; when power protection signal Ue is virtual value, turn off PWM generator, stop the copped wave work of high-voltage inverter circuit.
The concrete connected mode of one of filament inverter circuit is as shown in Figure 7: form push-pull type single-phase inversion circuit by power tube Q3 and power tube Q4, input (401) connects positive pole, input (402) connects negative pole, positive pole is connected a fuse F2, when problems such as internal short-circuits, fuse F2 fuses by the short circuit current of overload, prevents filament inverter circuit from impacting other parts.The filament PWM drive singal Uc1 come from filament inverter circuit transmission produces two-way drive singal g3 and g4 driving power pipe Q3 and power tube Q4 respectively, drive singal g3 is identical with g4 frequency and fixing, frequency is 20kHz, phase 180 °, pulsewidth is identical, drive singal g3 and g4 transfer process is arranged to the minimum Dead Time of about 2 μ s.Resistance R6 is high-tension transformer T2 primary current sampling resistor, and exports high-voltage inverter circuit current feedback signal Ud1.Piezo-resistance Ry3 and piezo-resistance Ry4 is high-tension transformer T2 armature winding leakage reactance discharge loop.Filament inverter circuit output (403) and (404) are connected to the two ends of electron gun filament, and output (404) is connected with high-voltage inverter circuit output (203).
The logic control process of filament inverter controller as shown in Figure 8, Ub *be line setting value, Ub is line sampled value, Δ Ub=Ub *-Ub, generates line conditioning signal Ub1 by PI regulating circuit (51), Uf *for heater current setting value, Ud1 is filament inverter circuit current feedback signal, Δ Uf=Uf *+ Ub1-Ud1; filament conditioning signal Uf1 is generated through PI regulating circuit; be transferred to PWM generator 52; generate filament PWM drive singal Uc1; as shown in Figure 9, pwm signal receives the power protection signal Ue come from the transmission of fault comprehensive device simultaneously, when power protection signal Ue is virtual value for driving pulse g3, g4; turn off PWM generator (53), stop the copped wave work of filament inverter circuit.
The concrete connected mode of one of focus circuit is as shown in Figure 10: the output (601) of focus circuit is connected with the focus coil of electron gun with (602).Focus circuit is by 15V Power supply, and diode D4 is in parallel with focus coil, and composition current loop, discharges induced-current during shutoff.Uh *for focus current setting value, Ud3 is the focus current sampled value flowing through focus coil, and resistance R6 is sampling resistor, Δ Uh=Uh *-Ud3; focus adjustment signal Uh1 is generated through PI regulating circuit; be transferred to PWM generator (62); generate and focus on PWM drive singal Uc3; broken by the switch focusing on PWM drive singal Uc3 control power tube Q5; regulate the duty cycle adjustment of PWM to flow through the average current of focus coil, the power protection signal Ue simultaneously from fault comprehensive device is input in PWM generator (53), turns off the generation of PWM when power protection signal is virtual value.
The concrete connected mode of one of fault comprehensive device is as shown in figure 11: in figure, 71,72,73,74,75 are respectively voltage comparator, and R7, R8, R9, R10, R11 are the pull-up resistor of each voltage comparator, when filament sampled value Ud1 is greater than setting value Ud1 *time, voltage comparator (71) exports high level, in like manner, when high pressure sampled value Ud2 is greater than setting value Ud2 *time, voltage comparator (72) exports high level, when focusing sampled value Ud3 is greater than setting value Ud3 *time, voltage comparator (73) exports high level, when high tension voltage sampled value Ua is greater than setting value Ua *time, voltage comparator (74) exports high level, when line sampled value Ub is greater than setting value Ub *time, voltage comparator (75) exports high level.Or the signal of gate (76) to input is added up; as long as there is a road to be high level; namely power protection signal exports high level, turns off the PWM drive singal of high drive controller, filament inverter controller, focus circuit etc., prevents power overload situation from damaging.
The content be not described in detail in description of the present invention belongs to the known technology of those skilled in the art.

Claims (9)

1. for a hand-held electronic bundle source of welding current for space-orbit welding, it is characterized in that: comprise filter circuit, filament inverter circuit, high-voltage inverter circuit, high-voltage inverted controller, filament inverter controller, focus circuit, fault comprehensive device, wherein
Filter circuit, the 100V dc source of the outside input of access, utilizes π type filter circuit to carry out filtering and removes high-frequency electromagnetic interfering signal, deliver to filament inverter circuit, high-voltage inverter circuit after obtaining filtered 100V direct current;
Filament inverter circuit, receive the PWM drive singal Uc1 that filament inverter controller sends, and change the 100V direct current of input into 100V alternating current according to PWM drive singal Uc1, output transformer prime current sampling data Ud1 simultaneously, 100V alternating current is delivered to the filament of electron gun, transformer prime current sampling data Ud1 is delivered to filament inverter controller, fault comprehensive device;
High-voltage inverter circuit, receive the PWM drive singal Uc2 that high-voltage inverted controller sends, and change the 100V direct current of input into 100V alternating current according to PWM drive singal Uc2, output transformer prime voltage sample value Ud2 simultaneously, 100V alternating current is carried out boosting and becomes 10kV direct current, gather the galvanic voltage of 10kV and be designated as high tension voltage sampled value Ua, gather the galvanic electric current of 10kV and be designated as electronic beam current sampled value Ub, high tension voltage sampled value Ua is delivered to high-voltage inverted controller, fault comprehensive device, electronic beam current sampled value Ub is delivered to filament inverter controller, fault comprehensive device, transformer prime voltage sample value Ud2 is delivered to fault comprehensive device,
High-voltage inverted controller, produces and exports PWM drive singal Uc2 to high-voltage inverter circuit; Receive external high pressure voltage setting value Ua*, according to external high pressure voltage setting value Ua*, PI adjustment is carried out to high tension voltage sampled value Ua, obtain a PI and regulate result, regulate the PWM pulsewidth of result adjustment high-voltage inverter circuit according to a PI, keep 10kV DC voltage to stablize; When receiving guard signal Ue and guard signal Ue is high level, close;
Filament inverter controller, produces and exports PWM drive singal Uc1 to filament inverter circuit; Receive external electrical line setting value Ub*, obtain internal filaments current setting value Uf*, PI is carried out to electronic beam current sampled value Ub regulate process according to external electrical line setting value Ub*, transformer prime current sampling data Ud1, internal filaments current setting value Uf*, obtain the 2nd PI and regulate result, regulate the PWM pulsewidth of result adjustment filament inverter circuit according to the 2nd PI, keep the filament of electron gun to export line and stablize; When receiving guard signal Ue and guard signal Ue is high level, close;
Focus circuit, obtains outside focus current setting value Uh*, regulates focus coil current according to outside focus current setting value Uh*, makes electron gun form high energy beam current, and collection focus coil current obtains focus current sampled value Ud3 and delivers to fault comprehensive device simultaneously; When receiving guard signal Ue and guard signal Ue is high level, close;
Fault comprehensive device, receiving transformer prime current sampling data Ud1, transformer prime voltage sample value Ud2, high tension voltage sampled value Ua, electronic beam current sampled value Ub, obtain transformer prime current sampling data Ud1 after focus current sampled value Ud3 respectively and set protection value, transformer prime voltage sample value Ud2 sets protection value, high tension voltage sampled value Ua sets protection value, electronic beam current sampled value Ub sets protection value, focus current sampled value Ud3 sets protection value and judges respectively, if transformer prime current sampling data Ud1, transformer prime voltage sample value Ud2, high tension voltage sampled value Ua, electronic beam current sampled value Ub or focus current sampled value Ud3 exceeds corresponding setting protection value, then output protection signal Ue is to high pressure inverter controller, filament inverter controller and focus circuit, by high-voltage inverted controller, filament inverter controller and focus circuit are closed, and wherein, transformer prime current sampling data Ud1 sets protection value, transformer prime voltage sample value Ud2 sets protection value, high tension voltage sampled value Ua sets protection value, electronic beam current sampled value Ub sets protection value, focus current sampled value Ud3 sets protection value and arranges arbitrarily by outside.
2. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, is characterized in that: described filter circuit comprises diode D1, inductance L 1, electric capacity C1; Diode D1 positive pole connects 100V DC power cathode, filtered 100V direct current negative pole, diode D1 negative pole is connected with 100V DC power anode, inductance L 1 one termination 100V DC power anode, another termination filtered 100V direct current positive pole, electric capacity C1 one end, another termination 100V DC power cathode of electric capacity C1, filtered 100V direct current connects filament inverter circuit, high-voltage inverter circuit.
3. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1 and 2, it is characterized in that: described high-voltage inverter circuit comprises fuse F1, power tube Q1, power tube Q2, high-voltage power tube drive circuit (21), piezo-resistance Ry1, piezo-resistance Ry2, step-up transformer T1, resistance R1, R2, R3, R4, electric capacity C2, high-voltage rectifier bridge (22), high pressure choke (23), high pressure choke (23) comprises inductance L 2, inductance L 3, diode D2, diode D3, power tube Q1, power tube Q2, transformer T1, piezo-resistance Ry1, piezo-resistance Ry2 forms push-pull type single-phase inversion circuit, fuse F1 mono-termination filtered 100V direct current anode, the centre tap that another termination step-up transformer T1 is elementary, high-voltage power tube drive circuit (21) produces driving pulse g1 after receiving PWM drive singal Uc2, driving pulse g2, driving pulse g1 connects the base stage of power tube Q1, driving pulse g1 connects the base stage of power tube Q2, R1 mono-termination filtered 100V direct current negative terminal ground connection, the other end and Q1, the emitter stage of Q2 connects, and output transformer prime voltage sample value Ud2, step-up transformer T1 level two ends connect high-voltage rectifier bridge (22), L2 and D2 is in parallel, high pressure choke (23) is composed in series after L3 and D3 parallel connection, Absorption Capacitance C2 is in parallel with high-voltage rectifier bridge (22), resistance R2 mono-termination 10kV direct current negative pole, other end connecting resistance R3, resistance R3 mono-termination 10kV direct current positive pole ground connection, other end connecting resistance R2 also exports high tension voltage sampled value Ua, resistance R4 mono-termination 10kV direct current positive pole, another terminated high voltage choke (23), and export electronic beam current sampled value Ub, high tension voltage sampled value Ua connects high-voltage inverted controller, fault comprehensive device, electronic beam current sampled value Ub connects filament inverter controller, fault comprehensive device, transformer prime voltage sample value Ud2 connects fault comprehensive device.
4. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, is characterized in that: described high-voltage inverted controller comprises a PI regulating circuit (31), the first PWM generator (32); External high pressure voltage setting value Ua* and high tension voltage sampled value Ua generates High Pressure Difference value signal Δ Ua; and connect PI regulating circuit (31); obtain being input in PWM generator (32) after a PI regulates result; produce filament PWM drive singal Uc2; guard signal Ue connects PWM generator (32); when Ue is high level, PWM generator turns off.
5. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, it is characterized in that: described filament inverter circuit comprises fuse F2, power tube Q3, power tube Q4, filament wattage tube drive circuit (41), piezo-resistance Ry3, piezo-resistance Ry4, transformer T2, resistance R5, power tube Q3, power tube Q4, transformer T2, piezo-resistance Ry3, piezo-resistance Ry4 form push-pull type single-phase inversion circuit, fuse F2 mono-termination 100V direct current positive pole, the centre tap that another termination transformer T2 is elementary, filament wattage tube drive circuit (41) produces driving pulse g3 after meeting PWM drive singal Uc1, driving pulse g4, driving pulse g3 connects the base stage of Q3, driving pulse g4 connects the base stage of Q4, R5 mono-termination 100V direct current negative pole ground connection, the other end respectively with Q3, the emitter stage of Q4 connects, and output current sampled signal Ud1, the secondary of transformer T2 connects 100V alternating current, and deliver to the filament of electron gun, transformer prime current sampling data Ud1 connects filament inverter controller, fault comprehensive device.
6. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, is characterized in that: described filament inverter controller comprises the 2nd PI regulating circuit (51), the 3rd PI regulating circuit (52), the second PWM generator (53), external electrical line setting value Ub* and electronic beam current sampled value Ub generates line difference signal Δ Ub, and connect the 2nd PI regulating circuit (51), produce line conditioning signal Ub1, line conditioning signal Ub1, internal filaments current setting value Uf*, transformer prime current sampling data Ud1 generates heater current difference signal Δ Uf, and connect the 3rd PI regulating circuit (52), produce heater current conditioning signal Uf1, heater current conditioning signal Uf1 is input to the second PWM generator (53), produce filament PWM drive singal Uc1 to filament inverter circuit, second PWM generator (53) meets guard signal Ue, turn off when Ue is high level.
7. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, is characterized in that: described focus circuit comprises diode D4, power tube Q5, resistance R6, the 4th PI regulating circuit (61), the 3rd PWM generator (62), focus coil, diode D4 is in parallel with focus coil, diode D4 negative pole connects+15V power supply, positive pole connects the colelctor electrode of power tube Q5, resistance R6 one end ground connection, the other end connects the emitter stage of power tube Q5 and exports focus coil sample rate current Ud3, focus current setting value Uh*, focus current sampled value Ud3 generates focus current difference signal Δ Uh, and meet the 4th PI regulating circuit generation focus current conditioning signal Uh1, focus current conditioning signal Uh1 is input to the 3rd PWM generator (62), produce drive singal Uc3, drive singal Uc3 connects the base stage of power tube Q5, focus current sampled value Ud3 connects fault comprehensive device, 3rd PWM generator (62) meets guard signal Ue, turn off when Ue is high level.
8. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, is characterized in that: described fault comprehensive device comprises the first comparator (71), the second comparator (72), the 3rd comparator (73), the 4th comparator (74), the 5th comparator (75), resistance R7, resistance R8, resistance R9, resistance R10, resistance R11 or gate (76), transformer prime current sampling data Ud1 connects the first comparator (71) positive input terminal, transformer prime current sampling data Ud1 sets protection value Ud1* and connects the first comparator (71) negative input end, resistance R7 one end connection+15V, another termination first comparator (71) output, and connect or gate (76) first via input, transformer prime voltage sample value Ud2 connects the second comparator (72) positive input terminal, transformer prime voltage sample value Ud2 sets protection value Ud2* and connects the second comparator (72) negative input end, resistance R8 one end connection+15V, the other end connects the second comparator (72) output, and connect or gate (76) second road input, focus current sampled value Ud3 connects the 3rd comparator (73) positive input terminal, focus current sampled value Ud3 sets protection value Ud3* and connects the 3rd comparator (73) negative input end, resistance R9 one end connection+15V, the other end connects the 3rd comparator (73) output, and connect or gate (76) the 3rd road input, high tension voltage sampled value Ua connects the 4th comparator (74) positive input terminal, high tension voltage sampled value Ua sets protection value Ud4* and connects the 4th comparator (74) negative input end, resistance R10 one end connection+15V, the other end connects the 4th comparator (74) output, and connect or gate (76) the 4th road input, electronic beam current sampled value Ub connects the 5th comparator (75) positive input terminal, electronic beam current sampled value Ub sets protection value Ud4* and connects the 5th comparator (75) negative input end, resistance R11 mono-termination+15V, another termination the 5th comparator (75) output, and connect or gate (76) the 5th road input, or gate (76) output protection signal Ue is to high pressure inverter controller, filament inverter controller and focus circuit.
9. a kind of hand-held electronic bundle source of welding current for space-orbit welding according to claim 1, it is characterized in that: the span of described external high pressure voltage setting value Ua* is [0-10kV], the span of external electrical line setting value Ub* is [0-150mA], and the span of outside focus current setting value Uh* is [0.5-2A].
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114178668A (en) * 2021-12-01 2022-03-15 西北工业大学 Pen type handheld electron beam gun special for space welding

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869801A (en) * 1995-02-15 1999-02-09 The E.O. Paton Electric Welding Institute Of The National Academy Of Sciences Of Ukraine, Device for manual electron beam processing of materials in space
CN201380361Y (en) * 2009-04-03 2010-01-13 桂林狮达机电技术工程有限公司 Acceleration high-voltage power supply device for electron-beam drilling machine
CN102886598A (en) * 2012-09-17 2013-01-23 北京航空航天大学 Bias power device applied to high-frequency pulsed electron beam welding
CN103084724A (en) * 2013-02-06 2013-05-08 桂林狮达机电技术工程有限公司 Contravariant accelerating power supply device of electron beam depositing equipment and control method thereof
CN204504498U (en) * 2015-03-23 2015-07-29 兰州交通大学 A kind of rail welding electron-beam welder filament supply device
CN104827177A (en) * 2015-05-29 2015-08-12 哈尔滨工业大学 Low-voltage high-current-beam electron beam vacuum welding device and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869801A (en) * 1995-02-15 1999-02-09 The E.O. Paton Electric Welding Institute Of The National Academy Of Sciences Of Ukraine, Device for manual electron beam processing of materials in space
CN201380361Y (en) * 2009-04-03 2010-01-13 桂林狮达机电技术工程有限公司 Acceleration high-voltage power supply device for electron-beam drilling machine
CN102886598A (en) * 2012-09-17 2013-01-23 北京航空航天大学 Bias power device applied to high-frequency pulsed electron beam welding
CN103084724A (en) * 2013-02-06 2013-05-08 桂林狮达机电技术工程有限公司 Contravariant accelerating power supply device of electron beam depositing equipment and control method thereof
CN204504498U (en) * 2015-03-23 2015-07-29 兰州交通大学 A kind of rail welding electron-beam welder filament supply device
CN104827177A (en) * 2015-05-29 2015-08-12 哈尔滨工业大学 Low-voltage high-current-beam electron beam vacuum welding device and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114178668A (en) * 2021-12-01 2022-03-15 西北工业大学 Pen type handheld electron beam gun special for space welding

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