CN102290792B - Protection device capable of preventing secondary input of current transformer from being wrongly accessed and arc welding power supply device - Google Patents
Protection device capable of preventing secondary input of current transformer from being wrongly accessed and arc welding power supply device Download PDFInfo
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- CN102290792B CN102290792B CN201110157960.5A CN201110157960A CN102290792B CN 102290792 B CN102290792 B CN 102290792B CN 201110157960 A CN201110157960 A CN 201110157960A CN 102290792 B CN102290792 B CN 102290792B
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Abstract
The invention discloses a protection device capable of preventing secondary input of a current transformer from being wrongly accessed. The device comprises an arc welding power supply input end, a switch power supply, a power semiconductor control device and a power supply output end which are connected in sequence; the protection device further comprises a wrong accessing resistant control device, a logic control device and a drive control device which are connected in sequence; the drive control device is connected with an input power supply and controls the input power supply. The invention further discloses an arc welding power supply which comprises the protection device and further comprises an arc welding power supply input end, a switch power supply, a power semiconductor control device and a power supply output end connected in sequence; the drive control device is connected with an input power supply of the arc welding power supply input end and controls the input power supply of the arc welding power supply input end. In the invention, with the wrong accessing resistant control device, the output signal of the wrong accessing resistant control device is processed by the logic control device to control the arc welding input power supply, and with the combination of the electronic line control technology, the phenomenon to damage the apparatus and the current transformer due to the wrong accessing can be avoided, thus, the protection to the arc welding power supply input is favorable.
Description
Technical field
Patent of the present invention relates to the protective device of a kind of arc-welding power supply device and Arc Welding Power; be applied to manual, semi-automatic, automatic welding device field, relate in particular to the protective device that prevents secondary converter input wrong that is applied to Arc Welding Power and the Arc Welding Power of applying this protective device.
Background technology
Along with the development of solder technology, in current industrial production, become very important metal manufacturing process.Especially in industries such as shipbuilding, harbour machinery, pressure vessel, oil-gas pipeline, metal structure factory building, power constructions, seem more important, the requirement of welding efficiency, welding quality, Welding Safety operation is also more and more higher.Same scope of operation multistation, multiplex (MUX) plant three-dimensional operation and are seen everywhere, and safety in production are constituted a threat to, and often have operator to be occurred by Arc Welding Power electric shock event by extra large manufacturing enterprise high temperature, high humidity environment are particularly riverine.Therefore adopt the source of welding current of direct current centrally connected power supply distribution DCTODC current transformer (secondary converter) to come into vogue abroad, also will promote rapidly at home.Because secondary converter adopts direct current supply, input positive and negative connecing instead and can cause device failure and device damage, therefore design that a kind of to prevent from inputting wrong device very necessary, extremely important for the anti-accidental damage of equipment and equipment application.
The device that the preventing of prior art inputted wrong generally adopts power diode to realize the protection to equipment and device in conjunction with the control model of contactor; this kind of device is because contactor flows through large current heating and arcing phenomenon happens occasionally for a long time; affect the reliability service of device; and the cost of high-power contactor is higher, what also affected prior art prevents from inputting applying of wrong appliance arrangement.
Summary of the invention
The invention provides a kind of protective device that prevents secondary converter input wrong, avoid inputting wrong, improve the fail safe of input power.
The present invention also provides a kind of arc-welding power supply device, avoids Arc Welding Power input wrong, improves the reliability of Arc Welding Power operation.
For solving above-mentioned technical problem; the invention provides a kind of protective device that prevents secondary converter input wrong; comprise the anti-wrong control device, logic control device and the driving control device that connect successively, described driving control device connects and controls the input power of Arc Welding Power.
Protective device as above, described anti-wrong control device comprises electric capacity surge-proof charging device and the conduction and cut-off control device that connects respectively logic control device.
Protective device as above, described electric capacity surge-proof charging device is connected and composed successively by delay control circuit, charging control circuit and output control circuit.
Protective device as above; described delay control circuit is by the first resistance R 113 second resistance R 114; the first diode V11; the first capacitor C 45; the 3rd resistance R 115; transistor VQ8 forms; described the first resistance R 113 is in parallel with the first diode V11 and be connected to the base stage of transistor VQ8 after connecting with the second resistance R 114; after the first capacitor C 45 is in parallel with the 3rd resistance R 115, be also connected respectively base stage and the emitter-base bandgap grading of transistor VQ8; time of delay, length was by the first resistance R 113; the numerical value of the second resistance R 114, the first capacitor C 45 is determined.
Protective device as above, described output control circuit is formed and is connected to the collector electrode of transistor VQ8 by the second diode V2 and charging circuit parallel connection.
Protective device as above; described charging circuit comprises charge coil K1A and controls the slowly contact control device of charging of Arc Welding Power main circuit power electric capacity; when system power on the first contact KA4 and the second contact KA6, the 3rd contact KA13 and the 4th contact KA11 contacting of initial stage contact control device, main circuit power electric capacity limits charging current by peripheral current-limiting resistance and slowly charges.
Protective device as above, the scope 1A～10A of described restriction charging current.
Protective device as above; when described power capacity charging voltage to 80% left and right; described charge coil K1A conduction; the first contact KA4 of contact control device and the 5th contact KA8, the 3rd contact KA13 and the 6th contact KA9 conducting; and cut off charging circuit and control controlled conduction and cut-off control device by the contact of contact control device; the slow charging circuit of conducting bypass, normally works and exports in Arc Welding Power loop.
The present invention also further provides a kind of arc-welding power supply device that comprises the protective device of above-mentioned arbitrary technical scheme; also comprise the Arc Welding Power input, Switching Power Supply, power semiconductor control device and the power output end that connect successively, described driving control device connects and controls the input power of described Arc Welding Power input.
Arc-welding power supply device as above, described Switching Power Supply comprises selector switch, input switch power supply and thyristor installation, and described input switch power supply is connected respectively the rear power semiconductor control device that also outputs signal to respectively with thyristor installation with selector switch.
Arc-welding power supply device as above, described Arc Welding Power input is set to male plug, and described power output end is set to mother socket.
As mentioned above, the present invention adopts anti-wrong control device and by logic control device, processes the input power of the output signal control Arc Welding Power of anti-wrong control device, avoid inputting wrong device and current transformer are damaged to phenomenon, the arc-welding secondary converter reliability of operation and the stability that have improved arc-welding power supply device, expanded application.
Accompanying drawing explanation
Fig. 1 is the principle assumption diagram with the arc-welding power supply device of the protective device that prevents secondary converter input wrong of the present invention.
Fig. 2 is the circuit theory diagrams of the electric capacity surge-proof charging device of the protective device that prevents secondary converter input wrong of the present invention.
Embodiment
For further setting forth the present invention, reach technological means and the effect that predetermined object is taked, below in conjunction with drawings and the embodiments, architectural feature, to concrete structure of the present invention and effect thereof, be described in detail as follows.
Fig. 1, that the protective device that prevents secondary converter input wrong of the present invention is applied to is manual, semi-automatic, in the power-supply device in automatic welding device field, to prevent secondary converter input wrong.
The arc-welding power supply device with the protective device that prevents secondary converter input wrong of the present invention comprises Arc Welding Power input 1A, Switching Power Supply, power semiconductor control device and the power output end connecting successively; anti-wrong control device, logic control device 6 and driving control device 3 are connected successively, and driving control device connects and control inputs power supply.
Of the present inventionly prevent that the protective device of secondary converter input wrong from comprising anti-wrong control device, logic control device 6 and the driving control device 3 connecting successively, driving control device 3 connects and controls the input power of Arc Welding Power input 1A.Anti-wrong control device comprises electric capacity surge-proof charging device 5 and the conduction and cut-off control device 4 that connects respectively logic control device 6.
In specific embodiment, in order more easily to prevent from inputting wrong, the input adapter form of Arc Welding Power of the present invention is obviously distinguished, positive input 1A adopts male plug, negative input 1B adopts mother socket, further in the physical structure of input adapter, avoids the possibility of the input wires mistake of DCTODC current transformer.
Switching Power Supply comprises selector switch, input switch power supply 2 and thyristor installation 7, and input switch power supply 2 is connected respectively the rear power semiconductor control device that also outputs signal to respectively with thyristor installation 7 with selector switch.In four contact K1, K2 of selector switch, K3, K4, contact K1, K3 connect Arc Welding Power input 1A, and contact K2, K4 connect respectively input switch power supply 2 and thyristor installation 7.Input switch power supply 2 provides control power supply for protective device of the present invention, and wide region input can be set as required.
Fig. 2 is the circuit principle structure figure of the electric capacity surge-proof charging device of the protective device that prevents secondary converter input wrong of the present invention.In Fig. 2, electric capacity surge-proof charging device electric capacity surge-proof charging device is connected and composed successively by delay control circuit, charging control circuit and output control circuit.Delay control circuit is by the first resistance R 113, the second resistance R 114, the first diode V11, the first capacitor C 45, the three resistance R 115, transistor VQ8 forms, described the first resistance R 113 is in parallel with the first diode V11 and be connected to the base stage of transistor VQ8 after connecting with the second resistance R 114, and afterwards and be connected respectively base stage and the emitter-base bandgap grading of transistor VQ8, time of delay, length was by the first resistance R 113 for the first capacitor C 45 and the 3rd resistance R 115 parallel connections, the numerical value of the second resistance R 114, the first capacitor C 45 is determined.Output control circuit is formed and is connected to the collector electrode of transistor VQ8 by the second diode V2 and charging circuit parallel connection.Charging circuit comprises charge coil K1A and controls the slowly contact control device of charging of Arc Welding Power main circuit power electric capacity, when power on the first contact KA4 of initial stage contact control device and the second contact KA6, the 3rd contact KA13 and the 4th contact KA11 of system connects, main circuit power electric capacity limits charging current by peripheral current-limiting resistance and slowly charges.
Contact control device in charging control circuit completes Arc Welding Power main circuit power electric capacity slowly to charge with having or not and controls, power on the first contact KA4 of charge coil K1A described in the initial stage and the second contact KA6, the 3rd contact KA13 and the 4th contact KA11 of system connects, main circuit power electric capacity limits charging current by peripheral current-limiting resistance, slowly charges.In specific embodiment, the scope that can set this restriction charging current is 1A～10A.When described power capacity charging voltage to 80% left and right, the coil conduction of described charge coil K1A, the first contact KA4 and the 5th contact KA8, the 3rd contact KA13 and the 6th contact KA9 conducting, cut off slow charging circuit and controlled silicon controlled drive device conducting by this contact, the slow charging circuit of now controlled silicon conducting bypass, the normal work of Arc Welding Power major loop power output.
In sum, the present invention adopts anti-wrong control device and by logic control device, processes the output signal control arc-welding input power of anti-wrong control device, adopt power thyristor installation and noncontacting switch to realize the anti-locking apparatus of input wrong, in conjunction with electronic circuit control technology, successfully avoid inputting wrong device and current transformer are damaged to phenomenon, improved arc-welding secondary converter reliability and expanded application.
Of the present inventionly prevent that the secondary converter input protective device of wrong and above-mentioned the lifted embodiment of arc-welding power supply device are only in order to illustrate principle of the present invention and structure; but not in order to limit the present invention; all this kind equivalent transformation according to the present invention or prior art is that those skilled in the art learns apparently, ought to be within the category of the disclosed protection of the present invention.
Claims (8)
1. a protective device that prevents secondary converter input wrong, is characterized in that, comprises the anti-wrong control device, logic control device and the driving control device that connect successively, and described driving control device connects and control the input power of Arc Welding Power; Described anti-wrong control device comprises electric capacity surge-proof charging device and the conduction and cut-off control device that connects respectively logic control device; Described electric capacity surge-proof charging device is connected and composed successively by delay control circuit, charging control circuit and output control circuit.
2. protective device according to claim 1, it is characterized in that, described delay control circuit is by the first resistance (R113), the second resistance (R114), the first diode (V11), the first electric capacity (C45), the 3rd resistance (R115), transistor (VQ8) forms, described the first resistance (R113) is in parallel with the first diode (V11) and be connected to the base stage of transistor (VQ8) after connecting with the second resistance (R114), after the first electric capacity (C45) is in parallel with the 3rd resistance (R115), be also connected respectively base stage and the emitter-base bandgap grading of transistor (VQ8), time of delay, length was by the first resistance (R113), the second resistance (R114), the numerical value of the first electric capacity (C45) is determined.
3. protective device according to claim 2, is characterized in that, described output control circuit is by the second diode (V2) and the charging circuit collector electrode that forms and be connected to transistor (VQ8) in parallel.
4. protective device according to claim 3; it is characterized in that; described charging circuit comprises charge coil (K1A) and controls the slowly contact control device of charging of Arc Welding Power main circuit power electric capacity; when system power on the first contact (KA4) and the second contact (KA6), the 3rd contact (KA13) and the 4th contact (KA11) contacting of initial stage contact control device, main circuit power electric capacity limits charging current by peripheral current-limiting resistance and slowly charges.
5. protective device according to claim 4, is characterized in that, the scope 1A～10A of described restriction charging current.
6. protective device according to claim 4; it is characterized in that; when described power capacity charging voltage to 80% left and right; described charge coil (K1A) conduction; first contact (KA4) of contact control device and the 5th contact (KA8), the 3rd contact (KA13) and the 6th contact (KA9) conducting; and cut off charging circuit and control described conduction and cut-off control device by the contact of contact control device; the slow charging circuit of conducting bypass, normally works and exports in Arc Welding Power loop.
7. an arc-welding power supply device that comprises the protective device as described in claim as arbitrary in claim 1-6; it is characterized in that; also comprise the Arc Welding Power input, Switching Power Supply, power semiconductor control device and the power output end that connect successively, described driving control device connects and controls the input power of described Arc Welding Power input.
8. arc-welding power supply device according to claim 7, it is characterized in that, described Switching Power Supply comprises selector switch, input switch power supply and thyristor installation, and described input switch power supply is connected respectively the rear power semiconductor control device that also outputs signal to respectively with thyristor installation with selector switch.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110157960.5A CN102290792B (en) | 2011-06-14 | 2011-06-14 | Protection device capable of preventing secondary input of current transformer from being wrongly accessed and arc welding power supply device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110157960.5A CN102290792B (en) | 2011-06-14 | 2011-06-14 | Protection device capable of preventing secondary input of current transformer from being wrongly accessed and arc welding power supply device |
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| CN102290792A CN102290792A (en) | 2011-12-21 |
| CN102290792B true CN102290792B (en) | 2014-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US10155277B2 (en) | 2012-06-06 | 2018-12-18 | Illinois Tool Works Inc. | Welding device for remotely controlling welding power supply settings |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445896A (en) * | 2002-12-06 | 2003-10-01 | 台达电子工业股份有限公司 | Power souce commutation possessing reverse connected polarity and protection circuit for surge current |
| CN201717802U (en) * | 2010-07-05 | 2011-01-19 | 常熟开关制造有限公司(原常熟开关厂） | Reverse connection protection inverter circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201639290U (en) * | 2010-02-27 | 2010-11-17 | 比亚迪股份有限公司 | Device for preventing main loop of backup battery from being inversely connected |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445896A (en) * | 2002-12-06 | 2003-10-01 | 台达电子工业股份有限公司 | Power souce commutation possessing reverse connected polarity and protection circuit for surge current |
| CN201717802U (en) * | 2010-07-05 | 2011-01-19 | 常熟开关制造有限公司(原常熟开关厂） | Reverse connection protection inverter circuit |
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| CN102290792A (en) | 2011-12-21 |
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Owner name: BEIJING KHXY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: BEIJING ARCNOVA ARCFEEDER TECHNOLOGY CO., LTD. Effective date: 20130820 |
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Effective date of registration: 20130820 Address after: 102200 room A1202, unit A, building, building No. 6, super Road, Changping District science and Technology Park, Beijing Applicant after: BEIJING KUNHEXINGYE TECHNOLOGY CO., LTD. Address before: 102209, Beijing, Changping District Ding Lu northbound seven industrial parks, No. 10 essence, Unicom 4 floor, Room 411 Applicant before: Beijing Hongfu Ruida Technology Co., Ltd. |
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