CN210677285U - Special welding machine major loop of generator - Google Patents
Special welding machine major loop of generator Download PDFInfo
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- CN210677285U CN210677285U CN201921894680.0U CN201921894680U CN210677285U CN 210677285 U CN210677285 U CN 210677285U CN 201921894680 U CN201921894680 U CN 201921894680U CN 210677285 U CN210677285 U CN 210677285U
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Abstract
The utility model provides a special welding machine major loop of generator, be applied to contravariant welding machine technical field, it includes filter circuit, filter circuit includes first equalizer resistance circuit, second equalizer resistance circuit, electrolytic capacitor circuit, polyester capacitor circuit, and inductance circuit, first equalizer resistance circuit first end is connected with positive potential and the second end is connected with negative potential, electrolytic capacitor circuit's positive terminal is connected with positive potential and negative terminal is connected with negative potential, inductance circuit's first end is connected with positive potential and the second end is connected with second equalizer resistance circuit's first end and polyester capacitor circuit's positive terminal respectively, polyester capacitor circuit's negative terminal is connected with negative potential. The utility model provides a special welding machine major loop of generator adopts special components and parts and circuit design, when using the generator power supply, in case the input voltage fluctuation is very big, the protection device of core part responds simultaneously, has improved the anti voltage fluctuation ability of machine, the fault rate of greatly reduced machine.
Description
Technical Field
The utility model belongs to the technical field of the contravariant welding machine, concretely relates to special welding machine major loop of generator.
Background
The traditional inverter direct current welding machine is small in input voltage fluctuation resistance range, the input voltage fluctuation range of a single-phase inverter welding machine is generally AC 160V-240V, the input voltage fluctuation range of a three-phase inverter welding machine is generally AC 330V-AC 420V, a protection device of the machine completely depends on a voltage dependent resistor (generally adopting 20D681), and once the voltage exceeds 700V, an explosion machine and a power device are damaged. The output voltage of the generator is high and low, the fluctuation range is large, and the highest possible voltage can reach more than 1200V, so that the power of the generator is required to be more than twice of the output power of the machine when the generator is used for supplying power to the inverter direct current welding machine, and the machine has strong input voltage fluctuation resistance.
At present, the piezoresistor is used for performing overvoltage protection, the protection device is single, and other core power devices in the main loop of the inverter welding machine are protected in a mode of damaging the piezoresistor. However, the input voltage fluctuates too frequently, the voltage dependent resistor cannot respond in time, and high voltage enters the inverter circuit to damage a power device, so that the scheme of relying on the voltage dependent resistor alone is not reliable.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a special welding machine major loop of generator, including filter circuit, filter circuit includes first voltage-sharing resistance circuit, second voltage-sharing resistance circuit, electrolytic capacitor circuit, polyester capacitor circuit and inductance circuit, first voltage-sharing resistance circuit first end is connected with positive potential and the second end is connected with negative potential, electrolytic capacitor circuit's positive terminal with positive potential connection and negative terminal with negative potential connection, inductance circuit's first end with positive potential connection and the second end respectively with second voltage-sharing resistance circuit's first end with polyester capacitor circuit's positive terminal is connected, polyester capacitor circuit's negative terminal with negative potential connection.
Preferably, the first voltage-sharing resistor circuit comprises a first resistor, a second resistor and a third resistor which are connected in series in sequence.
Preferably, the second voltage-sharing resistor circuit comprises a fourth resistor and a fifth resistor which are sequentially connected in series.
Preferably, the electrolytic capacitor circuit includes a first electrolytic capacitor, a second electrolytic capacitor, a third electrolytic capacitor, a fourth electrolytic capacitor, a fifth electrolytic capacitor and a sixth electrolytic capacitor, the first electrolytic capacitor, the third electrolytic capacitor and the fifth electrolytic capacitor are sequentially connected in series, the second electrolytic capacitor, the fourth electrolytic capacitor and the sixth electrolytic capacitor are sequentially connected in series, the anodes of the first electrolytic capacitor and the second electrolytic capacitor are respectively connected with the positive potential, and the cathodes of the fifth electrolytic capacitor and the sixth electrolytic capacitor are respectively connected with the negative potential.
Preferably, the polyester capacitor circuit comprises a seventh polyester capacitor, an eighth polyester capacitor, a ninth polyester capacitor, a tenth polyester capacitor, an eleventh polyester capacitor and a twelfth polyester capacitor, the seventh polyester capacitor, the ninth polyester capacitor and the eleventh polyester capacitor are sequentially connected in series, the eighth polyester capacitor, the tenth polyester capacitor and the twelfth polyester capacitor are sequentially connected in series, anodes of the seventh polyester capacitor and the eighth polyester capacitor are respectively connected with the inductor circuit, and cathodes of the eleventh polyester capacitor and the twelfth polyester capacitor are respectively connected with the negative potential.
Preferably, the inductance circuit comprises an inductance, a first end of the inductance is connected with the positive potential, and a second end of the inductance is connected with a first end of the second voltage-sharing resistance circuit and a positive end of the polyester capacitor circuit respectively.
Preferably, the auxiliary power protection circuit further comprises an auxiliary power protection circuit, the auxiliary power protection circuit comprises a fuse, a sixth resistor, a seventh resistor, a voltage dependent resistor and a thirteenth capacitor, a first end of the fuse is connected with the positive potential, a second end of the fuse is respectively connected with first ends of the sixth resistor and the seventh resistor, second ends of the sixth resistor and the seventh resistor are respectively connected with a first end of the voltage dependent resistor and a negative electrode of the thirteenth capacitor, and a second end of the voltage dependent resistor and a positive electrode of the thirteenth capacitor are connected with the negative potential.
Preferably, the transformer further comprises a main transformer, and the primary side and secondary side turns ratio of the main transformer is 63: 7.
Preferably, the inverter circuit further comprises an IGBT single tube, and the type of the IGBT single tube is IHW30N160R 2.
The utility model provides a special welding machine major loop of generator adopts special components and parts and circuit design, when using the generator power supply, in case the input voltage fluctuation is very big, the protection device of core part responds simultaneously, has improved the anti voltage fluctuation ability of machine, the fault rate of greatly reduced machine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a filter circuit in a main loop of a welding machine dedicated for a generator provided by the present invention;
FIG. 2 is a schematic diagram of an auxiliary power protection circuit in a main circuit of a welding machine dedicated for a generator according to the present invention;
fig. 3 is a schematic diagram of a main transformer provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, in the embodiment of the present application, the present application provides a welder main loop dedicated to a generator, including a filter circuit, where the filter circuit includes a first voltage-sharing resistor circuit, a second voltage-sharing resistor circuit, an electrolytic capacitor circuit, a polyester capacitor circuit, and an inductor circuit, a first end of the first voltage-sharing resistor circuit is connected to a positive potential and a second end of the first voltage-sharing resistor circuit is connected to a negative potential, a positive end of the electrolytic capacitor circuit is connected to the positive potential and a negative end of the electrolytic capacitor circuit is connected to the negative potential, a first end of the inductor circuit is connected to the positive potential and a second end of the inductor circuit is connected to a first end of the second voltage-sharing resistor circuit and a positive end of the polyester capacitor circuit, respectively, and a negative end of the polyester capacitor circuit is connected to the negative. Through the mutual cooperation of the first voltage-sharing resistor circuit, the second voltage-sharing resistor circuit, the electrolytic capacitor circuit, the polyester capacitor circuit and the inductance circuit, the traditional filter circuit becomes a CLC filter circuit, and the voltage fluctuation resistance of the circuit is improved.
As shown in fig. 1, in the embodiment of the present application, the first equalizing resistance circuit includes a first resistor R1, a second resistor R2, and a third resistor R3 connected in series in this order.
In the embodiment of the present application, as shown in fig. 1, the second equalizing resistance circuit includes a fourth resistor R4 and a fifth resistor R5 connected in series in sequence.
As shown in fig. 1, in the embodiment of the present application, the electrolytic capacitor circuit includes a first electrolytic capacitor C1, a second electrolytic capacitor C2, a third electrolytic capacitor C3, a fourth electrolytic capacitor C4, a fifth electrolytic capacitor C5 and a sixth electrolytic capacitor C6, the first electrolytic capacitor C1, the third electrolytic capacitor C3 and the fifth electrolytic capacitor C5 are sequentially connected in series, the second electrolytic capacitor C2, the fourth electrolytic capacitor C4 and the sixth electrolytic capacitor C6 are sequentially connected in series, positive electrodes of the first electrolytic capacitor C1 and the second electrolytic capacitor C2 are respectively connected to the positive potential, and negative electrodes of the fifth electrolytic capacitor C5 and the sixth electrolytic capacitor C6 are respectively connected to the negative potential.
As shown in fig. 1, in the embodiment of the present application, the polyester capacitor circuit includes a seventh polyester capacitor C7, an eighth polyester capacitor C8, a ninth polyester capacitor C9, a tenth polyester capacitor C10, an eleventh polyester capacitor C11, and a twelfth polyester capacitor C12, the seventh polyester capacitor C7, the ninth polyester capacitor C9, and the eleventh polyester capacitor C11 are sequentially connected in series, the eighth polyester capacitor C8, the tenth polyester capacitor C10, and the twelfth polyester capacitor C12 are sequentially connected in series, anodes of the seventh polyester capacitor C7 and the eighth polyester capacitor C8 are respectively connected to the inductor circuit, and cathodes of the eleventh polyester capacitor C11 and the twelfth polyester capacitor C12 are respectively connected to the negative potential.
In the embodiment of the present application, as shown in fig. 1, the inductor circuit includes an inductor L1, a first terminal of the inductor L1 is connected to the positive potential, and a second terminal of the inductor L1 is connected to the first terminal of the second voltage-equalizing resistor circuit and the positive terminal of the polyester capacitor circuit, respectively.
As shown in fig. 2, in the embodiment of the present application, the main circuit of the generator-dedicated welding machine further includes an auxiliary power protection circuit, the auxiliary power protection circuit includes a fuse F1, a sixth resistor R6, a seventh resistor R7, a voltage dependent resistor RV1, and a thirteenth capacitor C13, a first end of the fuse F1 is connected to the positive potential, a second end of the fuse F1 is connected to first ends of the sixth resistor R6 and the seventh resistor R7, second ends of the sixth resistor R6 and the seventh resistor R7 are connected to a first end of the voltage dependent resistor RV1 and a negative electrode of the thirteenth capacitor C13, and a second end of the voltage dependent resistor RV1 and a positive electrode of the thirteenth capacitor C13 are connected to the negative potential.
In the embodiment of the application, the auxiliary power supply protection circuit is designed by adopting a piezoresistor RV1 (with the model number of 20D681) and a fuse piece F1 (with the model number of XH60-040), when the voltage is higher than 700V, the piezoresistor RV1 and the fuse piece F1 are burnt out, the auxiliary power supply is disconnected, the welding machine stops working, the reliable protection effect is achieved, and the fault rate of the inverter welding machine is greatly reduced.
Referring to fig. 3, in the embodiment of the present application, the main circuit of the welding machine dedicated for the generator provided by the present application further includes a main transformer, and the turn ratio of the primary side to the secondary side of the main transformer is 63: 7.
For a traditional inverter direct-current manual arc welding machine, when the output voltage is ensured to be DC50V-70V, the turn ratio of a main transformer is generally 45:5, and the use requirement can be met under the condition of small input voltage fluctuation; when the generator is used for providing power for the inverter welding machine, the voltage fluctuation is frequent and great, and according to a calculation formula of a main transformer of the inverter welding machine: n1 (primary winding number) is Umax (when 220V, full bridge inversion 310V/half bridge inversion 310/2V) T (switch tube conduction time)/2B (magnetic flux: ferrite 0.2-0.25, ultra-microcrystal 0.6-0.7) S (cross section area), if a main transformer with a turn ratio of 45:5 is continuously adopted, the main transformer is easily saturated, and welding machine faults are caused. Therefore, the main transformer with the brand-new design turn ratio of 63:7 is adopted, when the input voltage fluctuation is large, the main transformer cannot be saturated, and the reliability of the inverter welding machine is greatly improved.
In this application embodiment, the dedicated welding machine major loop of generator that this application provided still includes inverter circuit, inverter circuit includes the IGBT single tube, the IGBT single tube model is IHW30N160R 2. IHW30N160R2, the withstand voltage Vce of the IGBT single tube is 1600V, and the collector current Ic is 30A. The voltage withstanding value of the IGBT single tube is as high as 1600V, which is far higher than the output voltage fluctuation of the generator under normal conditions, so that the reliability of the inverter circuit is improved, and the fault rate of the welding machine is reduced.
The utility model provides a special welding machine major loop of generator adopts special components and parts and circuit design, when using the generator power supply, in case the input voltage fluctuation is very big, the protection device of core part responds simultaneously, has improved the anti voltage fluctuation ability of machine, the fault rate of greatly reduced machine.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (8)
1. The main loop of the special welder for the generator is characterized by comprising a filter circuit, wherein the filter circuit comprises a first voltage-sharing resistor circuit, a second voltage-sharing resistor circuit, an electrolytic capacitor circuit, a polyester capacitor circuit and an inductor circuit, the first end of the first voltage-sharing resistor circuit is connected with a positive potential, the second end of the first voltage-sharing resistor circuit is connected with a negative potential, the positive end of the electrolytic capacitor circuit is connected with the positive potential, the negative end of the electrolytic capacitor circuit is connected with the negative potential, the first end of the inductor circuit is connected with the positive potential, the second end of the inductor circuit is respectively connected with the first end of the second voltage-sharing resistor circuit and the positive end of the polyester capacitor circuit, and the negative end of the polyester capacitor circuit is connected with the negative potential.
2. The main loop of the welding machine special for the generator according to claim 1, wherein the first voltage-sharing resistance circuit comprises a first resistor, a second resistor and a third resistor which are connected in series in sequence.
3. The main loop of the welding machine special for the generator according to claim 1, wherein the second voltage-sharing resistance circuit comprises a fourth resistor and a fifth resistor which are connected in series in sequence.
4. The main circuit of the special welder for the generator as claimed in claim 1, wherein the electrolytic capacitor circuit comprises a first electrolytic capacitor, a second electrolytic capacitor, a third electrolytic capacitor, a fourth electrolytic capacitor, a fifth electrolytic capacitor and a sixth electrolytic capacitor, the first electrolytic capacitor, the third electrolytic capacitor and the fifth electrolytic capacitor are sequentially connected in series, the second electrolytic capacitor, the fourth electrolytic capacitor and the sixth electrolytic capacitor are sequentially connected in series, the positive electrodes of the first electrolytic capacitor and the second electrolytic capacitor are respectively connected with the positive potential, and the negative electrodes of the fifth electrolytic capacitor and the sixth electrolytic capacitor are respectively connected with the negative potential.
5. The welder main loop special for the generator as claimed in claim 1, wherein the polyester capacitor circuit comprises a seventh polyester capacitor, an eighth polyester capacitor, a ninth polyester capacitor, a tenth polyester capacitor, an eleventh polyester capacitor and a twelfth polyester capacitor, the seventh polyester capacitor, the ninth polyester capacitor and the eleventh polyester capacitor are sequentially connected in series, the eighth polyester capacitor, the tenth polyester capacitor and the twelfth polyester capacitor are sequentially connected in series, the anodes of the seventh polyester capacitor and the eighth polyester capacitor are respectively connected with the inductor circuit, and the cathodes of the eleventh polyester capacitor and the twelfth polyester capacitor are respectively connected with the negative potential.
6. The main loop of the machine as claimed in claim 1, wherein the inductance circuit comprises an inductance, a first end of the inductance is connected to the positive potential and a second end is connected to the first end of the second voltage-equalizing resistance circuit and the positive end of the polyester capacitor circuit, respectively.
7. The main circuit of the welder special for the generator as claimed in claim 1, further comprising an auxiliary power protection circuit, wherein the auxiliary power protection circuit comprises a fuse, a sixth resistor, a seventh resistor, a voltage dependent resistor and a thirteenth capacitor, a first end of the fuse is connected with the positive potential, a second end of the fuse is connected with first ends of the sixth resistor and the seventh resistor respectively, a second end of the sixth resistor and the seventh resistor is connected with a first end of the voltage dependent resistor and a negative electrode of the thirteenth capacitor respectively, and a second end of the voltage dependent resistor and a positive electrode of the thirteenth capacitor are connected with the negative potential.
8. The main circuit of a welding machine dedicated for electric generators of claim 1, further comprising a main transformer having a primary to secondary turns ratio of 63: 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921894680.0U CN210677285U (en) | 2019-11-05 | 2019-11-05 | Special welding machine major loop of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921894680.0U CN210677285U (en) | 2019-11-05 | 2019-11-05 | Special welding machine major loop of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210677285U true CN210677285U (en) | 2020-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921894680.0U Active CN210677285U (en) | 2019-11-05 | 2019-11-05 | Special welding machine major loop of generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210677285U (en) |
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2019
- 2019-11-05 CN CN201921894680.0U patent/CN210677285U/en active Active
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