CN2905298Y - Magnetic amplifier type arc welding rectifier - Google Patents
Magnetic amplifier type arc welding rectifier Download PDFInfo
- Publication number
- CN2905298Y CN2905298Y CN 200620041895 CN200620041895U CN2905298Y CN 2905298 Y CN2905298 Y CN 2905298Y CN 200620041895 CN200620041895 CN 200620041895 CN 200620041895 U CN200620041895 U CN 200620041895U CN 2905298 Y CN2905298 Y CN 2905298Y
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- China
- Prior art keywords
- magnetic amplifier
- arc welding
- rectifier
- control
- current source
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Abstract
The utility model is a magnetic amplifier type arc welding rectifier, comprising a main transformer, a magnetic amplifier, a silicon rectifier assembly, and an output reactance, characterized in that: the magnetic amplifier type arc welding rectifier further contains a control transformer, a electronic switch type constant-current source, wherein the electronic switch type constant-current source is connected with control coils of the control transformer and the magnetic amplifier; and the control transformer is further connected with, in order, the main transformer, the magnetic amplifier, the silicon rectifier assembly and the output reactance. By applying a electronic switch type constant-current source instead of the control circuit of ferroresonant type magnetic saturation voltage stabilizer currently used in magnetic amplifier type arc welding rectifiers, the utility model is endowed with advantages of labor-saving, material-saving and low cost; besides, the circuit is simple, reliable, with a low failure rate, and can easily be maintained. The utility model consumes less electricity, with high work efficiency and a low temperature rise etc, and is an ideal product for upgrading of arc welding rectifiers.
Description
One, technical field
The utility model relates to a kind of welding equipment, particularly relates to a kind of arc welding rectifier of magnetic amplifier.
Two, background technology
Characteristics such as present large-scale arc welding rectifier adopts magnetic amplifier control welding current, and is functional owing to having, and working stability is reliable, easy to maintenance, thus also producing in a large number and using.But the control of existing magnetic amplifier all is the saturation core regulator control circuit that adopts the ferromagnetic resonance formula, and this control mode consumable material is many, and the manufacturing cost height adopts the resistor network step-down simultaneously, and energy consumption is big, device temperature rise, fault are many.Moreover the voltage regulation performance of saturation core regulator is poor, removes to control the control coil electric current of magnetic amplifier by it, and effect is undesirable.
Three, summary of the invention
In order to address the above problem, the utility model provides a kind of magnetic amplifier arc welding rectifier that adopts the control of electronic switch type constant-current source, this magnetic amplifier arc welding rectifier is achieved in that it is by main transformer, magnetic amplifier, the silicon rectifier assembly, output reactance is formed, it is characterized in that the magnetic amplifier arc welding rectifier also comprises control transformer, the electronic switch type constant-current source, and electronic switch type constant-current source and control transformer, the control coil of magnetic amplifier is connected, control transformer again with main transformer, magnetic amplifier, the silicon rectifier assembly, output reactance is connected successively, and be loaded in the housing of magnetic amplifier arc welding rectifier the direct and control transformer of three phase mains respectively, main transformer connects.
Described electronic switch type constant-current source comprises rectifier, power switch, afterflow device, sample circuit, differential amplifier, the instruction signal generator that connects successively, the circuits for triggering that link to each other with power switch, differential amplifier, sample circuit one end links to each other with afterflow device and ground connection, the sample circuit other end is connected with magnetic amplifier control coil negative terminal, magnetic amplifier control coil anode is connected with afterflow device with the power switch output respectively, and rectifier also and instruction signal generator is connected.
Technique scheme essence is to substitute the control of ferromagnetic resonance formula saturation core regulator with the control of electronic switch type constant-current source, so all the other structures, the principle of magnetic amplifier arc welding rectifier are same as the prior art or similar.
The magnetic amplifier arc welding rectifier that designs and produces according to technique scheme is compared its advantage with the arc welding rectifier of ferromagnetic resonance formula saturation core regulator control and is: 1, save material, low cost of manufacture; 2, circuit simple and reliable, be convenient to safeguard, fault rate is very low; 3, little power consumption, efficient height, temperature rise are low; 4, introduce the line voltage feedback in the control circuit, make the arc welding rectifier output current more stable.
Four, description of drawings
Fig. 1, magnetic amplifier arc welding rectifier structural representation;
Fig. 2, magnetic amplifier arc welding rectifier fundamental diagram.
Five, the specific embodiment:
Below in conjunction with accompanying drawing, elaborate an embodiment of the present utility model.
According to Fig. 1, Fig. 2, the magnetic amplifier arc welding rectifier is made up of main transformer electrical equipment 1, magnetic amplifier 7, silicon rectifier assembly 2, output reactance 6, control transformer 4, electronic switch type constant-current source 5, wherein electronic switch type constant-current source 5 is connected with the control coil of control transformer 4, magnetic amplifier 7, control transformer 4 links to each other successively with main transformer 1, magnetic amplifier 7, silicon rectifier assembly 2, output reactance 6 again, and be loaded on respectively in the housing of magnetic amplifier arc welding rectifier, three phase mains directly is connected with control transformer 4, main transformer 1.Electronic switch type constant-current source 5 comprises rectifier 10, power switch 11, afterflow device 13, sample circuit 15, differential amplifier 16, the instruction signal generator 12 that connects successively, the circuits for triggering 14 that link to each other with power switch 11, differential amplifier 16, one end of sample circuit 15 links to each other with afterflow device 13 and ground connection, the other end of sample circuit 15 is connected with the control coil negative terminal of magnetic amplifier 7, the control coil anode of magnetic amplifier 7 is connected with afterflow device 13 with power switch 11 outputs respectively, and rectifier 10 is gone back and instruction signal generator 12 and is connected.3-electric fan, 5-are electronic switch type constant-current source printed board assemblies among Fig. 2.The output current of magnetic amplifier arc welding rectifier is to be controlled by the electric current of the control coil that flows through magnetic amplifier during work, and the electric current that flows through control coil is big more, and the output current of arc welding rectifier is also big more.When command voltage of instruction signal generator output and sample circuit output signal are removed control triggering electric circuit through differential amplifier after relatively, export the switching signal of corresponding dutycycle, remove to control the control coil electric current of magnetic amplifier by power switch, and then control output current.When the electrical network three-phase voltage fluctuates, give instruction signal generator by compensating signal of rectifier output, remove to adjust magnetic amplifier control coil electric current through differential amplifier, circuits for triggering, power switch, with of the influence of compensation network voltage, make output current more stable to the arc welding rectifier output current.The magnetic amplifier arc welding rectifier of all the other structures of magnetic amplifier arc welding rectifier, operation principle and the control of ferromagnetic resonance formula saturation core regulator is same or similar.
Claims (2)
1, a kind of magnetic amplifier arc welding rectifier of forming by main transformer (1), magnetic amplifier (7), silicon rectifier assembly (2), output reactance (6), it is characterized in that the magnetic amplifier arc welding rectifier also comprises control transformer (4), electronic switch type constant-current source (5), electronic switch type constant-current source (5) is connected with the control coil of control transformer (4), magnetic amplifier (7), and control transformer (4) is connected successively with main transformer (1), magnetic amplifier (7), silicon rectifier assembly (2), output reactance (6) again.
2, magnetic amplifier arc welding rectifier according to claim 1, it is characterized in that electronic switch type constant-current source (5) comprises the rectifier (10) that connects successively, power switch (11), afterflow device (13), sample circuit (15), differential amplifier (16), instruction signal generator (12), with power switch (11), the circuits for triggering (14) that differential amplifier (16) links to each other, one end of sample circuit (15) links to each other with afterflow device (13) and ground connection, the other end of sample circuit (15) is connected with the control coil negative terminal of magnetic amplifier (7), the control coil anode of magnetic amplifier (7) is connected with afterflow device (13) with power switch (11) output respectively, and rectifier (10) and instruction signal generator (12) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041895 CN2905298Y (en) | 2006-05-19 | 2006-05-19 | Magnetic amplifier type arc welding rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620041895 CN2905298Y (en) | 2006-05-19 | 2006-05-19 | Magnetic amplifier type arc welding rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2905298Y true CN2905298Y (en) | 2007-05-30 |
Family
ID=38113929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620041895 Expired - Fee Related CN2905298Y (en) | 2006-05-19 | 2006-05-19 | Magnetic amplifier type arc welding rectifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2905298Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425060A (en) * | 2016-08-30 | 2017-02-22 | 张子青 | Arc welding rectifier box |
-
2006
- 2006-05-19 CN CN 200620041895 patent/CN2905298Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425060A (en) * | 2016-08-30 | 2017-02-22 | 张子青 | Arc welding rectifier box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070530 Termination date: 20110519 |