CN114273755A - Current control circuit of intermediate frequency welding machine - Google Patents
Current control circuit of intermediate frequency welding machine Download PDFInfo
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- CN114273755A CN114273755A CN202111659592.4A CN202111659592A CN114273755A CN 114273755 A CN114273755 A CN 114273755A CN 202111659592 A CN202111659592 A CN 202111659592A CN 114273755 A CN114273755 A CN 114273755A
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- welding machine
- control circuit
- intermediate frequency
- current control
- rectifier bridge
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Abstract
The invention provides a current control circuit of an intermediate frequency welding machine, which comprises a plurality of groups of magnetors, a segmented controller and a three-phase rectifier bridge, wherein electronic switching devices are arranged between a live wire and/or a zero line of each group of magnetor windings and the three-phase rectifier bridge, the electronic switching devices are connected with the segmented controller, the segmented controller controls the on-off of each electronic switching device, and the positive pole and the negative pole in the output end of the three-phase rectifier bridge are respectively connected with each other. The bidirectional thyristor (bidirectional conduction power device) is relatively low in price; the different phase numbers of the magneto winding are accessed at the AC input end for combined control, thereby achieving the purpose of controlling the output current. The scheme has the advantages of low cost, high reliability, convenient maintenance and convenient large-scale use.
Description
Technical Field
The invention relates to the technical field of welding machine current control, in particular to a current control circuit of an intermediate frequency welding machine.
Background
The small gasoline (diesel) engine welder is widely applied to field construction because of being convenient to carry. The welding current control of the middle-high end welding machine mainly adopts inversion and chopping control modes, but has high cost and is mainly used in some professional occasions (like petroleum pipelines); for some middle and low end markets which have low requirements on welding, a low-cost intermediate frequency rectifier welding machine appears, the market occupancy is large, but the welding current of the welding machine cannot be controlled.
Therefore, the middle-high end welding machine of the small gasoline (diesel) engine has the defects of complex control, high cost and inconvenience for large-scale popularization; the middle-low end welder of small gasoline (diesel) engine has low cost and large market occupied capacity, but the welding current can not be controlled, and the use has very large limitation, for example, the welding of thin plates can not be used.
Disclosure of Invention
The present invention provides a current control circuit for an intermediate frequency welder that overcomes, or at least partially solves, the above problems, using a triac (bidirectional conduction power device) that is relatively inexpensive; the different phase numbers of the magneto winding are accessed at the AC input end for combined control, thereby achieving the purpose of controlling the output current. The scheme has the advantages of low cost, high reliability, convenient maintenance and convenient large-scale use.
According to a first aspect of the invention, a current control circuit of an intermediate frequency welding machine is provided, which comprises a plurality of groups of magnetors, a segmented controller and a three-phase rectifier bridge, wherein electronic switching devices are arranged between a live wire and/or a zero wire of each group of magnetor windings and the three-phase rectifier bridge, the electronic switching devices are connected with the segmented controller, the segmented controller controls the on-off of each electronic switching device, and the positive pole and the negative pole of the output end of the three-phase rectifier bridge are respectively connected with each other.
Based on the technical scheme of the invention, the following improvements can be made:
optionally, there are at least two sets of magneto.
Optionally, the segment controller is connected to a communication module, and the communication module is connected to a mobile terminal.
Optionally, the electronic switching device is a bidirectional thyristor or a bidirectional conduction power device.
Optionally, the segment controller is connected with a plurality of indicator lights, and each indicator light corresponds to one electronic switch device and is used for identifying the current on-off state of the electronic switch device.
The invention provides a current control circuit of an intermediate frequency welding machine, which has the following beneficial effects:
the bidirectional thyristor (bidirectional conduction power device) is relatively low in price; the different phase numbers of the magneto winding are accessed at the AC input end for combined control, thereby achieving the purpose of controlling the output current. The device has the advantages of low cost, high reliability, convenient maintenance and convenient large-scale use.
Drawings
Fig. 1 is a schematic circuit diagram illustrating current control of two sets of magneto-electric machines illustrated by a 120A welding machine, which is an intermediate frequency welding machine current control circuit according to an embodiment of the present invention.
Fig. 2 is a schematic circuit diagram illustrating current control of three groups of magneto-electric machines, which is exemplified by a 180A welding machine, in a current control circuit of an intermediate frequency welding machine according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, fig. 1 is a schematic circuit diagram illustrating two sets of magneto current control circuits, which are exemplified by a 120A welding machine, of a current control circuit of a medium frequency welding machine according to an embodiment of the present invention. Specifically, this embodiment provides an intermediate frequency welding machine current control circuit, and it includes:
the electromagnetic switch comprises a plurality of groups of magnetors, a segmentation controller and a three-phase rectifier bridge, wherein electronic switch devices are arranged between a live wire and/or a zero wire of each group of magnetor windings and the three-phase rectifier bridge, the electronic switch devices are connected with the segmentation controller, the segmentation controller controls the on-off of each electronic switch device, and the positive pole and the negative pole in the output end of the three-phase rectifier bridge are respectively connected with each other.
It is to be understood that, as shown in fig. 1, in the present embodiment including the winding a and the winding B, the electronic switching device includes S1, S2, S3; the three-phase rectifier bridge corresponds to the winding and comprises a three-phase rectifier bridge A and a three-phase rectifier bridge B respectively; for example, taking a 120A intermediate frequency welding machine as an example, in order to achieve current output control and be applicable to different welding objects, the matching relationship of the electronic switching devices is controlled by a segment controller, so that the connection relationship of the alternating current input ends is matched; as shown in the following table, the following table is a statistical table of the output current magnitudes under different combinations of S1, S2 and S3, wherein S1, S2 and S3 are respectively turned on or off under the control of the segment controller, and the segment current outputs are obtained through different combinations, and the following table is the current output states (switch 1 is on and switch 0 is off) when the rated current of the welding machine is 120A:
therefore, the requirements under different environments and conditions are met by controlling the output current of the welding machine through the electronic switching device.
It can be appreciated that the use of a triac (bidirectional conduction power device) is relatively inexpensive; the different phase numbers of the magneto winding are accessed at the AC input end for combined control, thereby achieving the purpose of controlling the output current. The device has the advantages of low cost, high reliability, convenient maintenance and convenient large-scale use.
In one possible embodiment, the magnetors are at least two groups.
It can be understood that, according to different output environments and requirements, more windings can be arranged as required, and the output current can be controlled by using the method of the embodiment.
Referring to fig. 2, fig. 2 is a schematic circuit diagram illustrating a current control circuit of an intermediate frequency welder according to an embodiment of the present invention, which is a three-group magneto current control circuit illustrated in a 180A welder, wherein, in addition to the winding a, the winding B, and S1, S2, S3, the three-phase rectifier bridge a, the three-phase rectifier bridge B shown in fig. 1, the winding C and the winding S4, and the three-phase rectifier bridge C are included.
And S1-S4 are all turned off, the output current of the welding machine is 60A, S1 and S2 are turned on, S3 and S4 are turned off, the output current of the welding machine is 120A, S1-S4 are all turned on, and the output current of the welding machine is 180A.
In a possible embodiment mode, the segment controller is connected with a communication module, and the communication module is connected with a mobile terminal.
It can be understood that, according to the above technical solution, the segment controller is connected with the mobile terminal through the communication module to realize remote control.
In a possible embodiment, the electronic switching device is a triac or a bidirectional conduction power device.
In a possible embodiment, the segment controller is connected with a plurality of indicator lights, and each indicator light corresponds to one electronic switch device and is used for identifying the current on-off state of the electronic switch device.
It is understood that, in the present embodiment, in order to facilitate quick viewing and judgment of the on-off state of each electronic switching device on site or remotely, the state thereof is displayed using the indicator lamp.
It should be noted that, in the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to relevant descriptions of other embodiments for parts that are not described in detail in a certain embodiment.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. The utility model provides an intermediate frequency welding machine current control circuit, its characterized in that includes a plurality of groups magnetors, segmentation controller and three-phase rectifier bridge, all is provided with electronic switch device between the live wire and/or zero line and the three-phase rectifier bridge of every group magnetor winding, electronic switch device all is connected with the segmentation controller, by the break-make of each electronic switch device of segmentation controller control, positive pole and negative pole interconnect respectively in the output of three-phase rectifier bridge.
2. The current control circuit of an intermediate frequency welder according to claim 1, characterized in that said magnetors are at least two groups.
3. The current control circuit of the intermediate frequency welding machine according to claim 1, characterized in that the segment controller is connected with a communication module, and the communication module is connected with a mobile terminal.
4. The current control circuit of the intermediate frequency welding machine according to claim 1, characterized in that the electronic switching device is a triac or a bidirectional conduction power device.
5. The current control circuit of the intermediate frequency welding machine according to claim 1, characterized in that the segment controller is connected with a plurality of indicator lights, each indicator light corresponds to one electronic switch device and is used for identifying the current on-off state of the electronic switch device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659592.4A CN114273755A (en) | 2021-12-30 | 2021-12-30 | Current control circuit of intermediate frequency welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111659592.4A CN114273755A (en) | 2021-12-30 | 2021-12-30 | Current control circuit of intermediate frequency welding machine |
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| Publication Number | Publication Date |
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| CN114273755A true CN114273755A (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111659592.4A Pending CN114273755A (en) | 2021-12-30 | 2021-12-30 | Current control circuit of intermediate frequency welding machine |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984654A (en) * | 1974-06-14 | 1976-10-05 | The Lincoln Electric Company | Arc-welding power source |
| CN1038418A (en) * | 1988-06-12 | 1990-01-03 | 沈培湘 | Combined parallel power supply for arc welding |
| CN1065615A (en) * | 1991-04-06 | 1992-10-28 | 沈扬 | The combination-pauallel type Arc Welding Power |
| CN201075801Y (en) * | 2007-06-14 | 2008-06-18 | 吴文达 | Internal combustion arc welding alternator of two-set three-phase stator winding in series |
| CN202094766U (en) * | 2011-06-29 | 2011-12-28 | 杨仕 | Current-adjustable multipolar permanent magnetic electric welding unit |
| CN204068804U (en) * | 2014-08-14 | 2014-12-31 | 福建奥托节能科技有限公司 | A kind of many power AC asynchronous motor control device |
| CN206356706U (en) * | 2016-12-21 | 2017-07-28 | 上海沪工焊接集团股份有限公司 | Electricity generating welder |
| CN207464417U (en) * | 2017-11-02 | 2018-06-08 | 重庆乾威科技有限公司 | A kind of electric welding machine and arc starter |
-
2021
- 2021-12-30 CN CN202111659592.4A patent/CN114273755A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3984654A (en) * | 1974-06-14 | 1976-10-05 | The Lincoln Electric Company | Arc-welding power source |
| CN1038418A (en) * | 1988-06-12 | 1990-01-03 | 沈培湘 | Combined parallel power supply for arc welding |
| CN1065615A (en) * | 1991-04-06 | 1992-10-28 | 沈扬 | The combination-pauallel type Arc Welding Power |
| CN201075801Y (en) * | 2007-06-14 | 2008-06-18 | 吴文达 | Internal combustion arc welding alternator of two-set three-phase stator winding in series |
| CN202094766U (en) * | 2011-06-29 | 2011-12-28 | 杨仕 | Current-adjustable multipolar permanent magnetic electric welding unit |
| CN204068804U (en) * | 2014-08-14 | 2014-12-31 | 福建奥托节能科技有限公司 | A kind of many power AC asynchronous motor control device |
| CN206356706U (en) * | 2016-12-21 | 2017-07-28 | 上海沪工焊接集团股份有限公司 | Electricity generating welder |
| CN207464417U (en) * | 2017-11-02 | 2018-06-08 | 重庆乾威科技有限公司 | A kind of electric welding machine and arc starter |
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Application publication date: 20220405 |