CN201600983U - Swing electric reactor and contravariant AC argon arc welder using electric reactor - Google Patents
Swing electric reactor and contravariant AC argon arc welder using electric reactor Download PDFInfo
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- CN201600983U CN201600983U CN200920261237XU CN200920261237U CN201600983U CN 201600983 U CN201600983 U CN 201600983U CN 200920261237X U CN200920261237X U CN 200920261237XU CN 200920261237 U CN200920261237 U CN 200920261237U CN 201600983 U CN201600983 U CN 201600983U
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Abstract
The utility model discloses a swing electric reactor, which comprises an iron core with an air gap, and a spiral coil installed on the iron core, wherein the air gap is of a wedge-shaped opening. The air gap of the swing electric reactor is not of a fixed-value size but the wedge-shaped opening; after adopting the structure, along with the increasing of the current, the iron core of the swing electric reactor can be partially saturated respectively according to the air gaps from the small to the large, the inductance value can be gradually decreased proportionally, and the peak voltage during commutation keeps constant value; it is clear that the swing electric reactor with simple structure can change the inductance value according to the change linear of the flowing current. For the contravariant AC argon arc welder adopting the swing electric reactor of the above structure, the spike voltage amplitude of the commutating pulse is constant during welding current and voltage commutation, the large current and the small current can be completely taken into account.
Description
Technical field
The utility model relates to electric power components and parts technical field, relates in particular to a kind ofly can change the linear swing reactor that changes its inductance value with flowing through electric current.
The utility model also relates to a kind of contravariant alternating-current argon arc welder of using said structure swing reactor.
Background technology
Reactor is a kind of broad-spectrum electric power components and parts, as in Figure of description contravariant alternating-current argon arc welder shown in Figure 1, application just being arranged, the contravariant alternating-current argon arc welder of structure as shown in Figure 1, wherein: inversion constant-current supply 1 ' output dc voltage, deliver to by transistor 4 ' through reactor 2 ', 5 ', 6 ', on 7 ' the secondary inverter bridge of forming, by the inversion of inverter bridge, take out weldingvoltage from left and right sides brachium pontis mid point then, deliver to respectively on soldered workpiece 9 ' and the argon arc welding welding gun 8 ', transistor 4 ' and 7 ' adopts one group of synchronous pulsed drive of same frequency, and transistor 5 ' and 6 ' adopts the synchronous pulsed drive of another group same frequency.Two groups of driving pulse same frequencys but phase phasic difference 180 degree.So just can on the brachium pontis of the left and right sides, obtain AC square wave current voltage, realize AC square wave current voltage welding procedure.
In contravariant alternating-current argon arc welder structure shown in Figure 1: reactor 2 ' and electric capacity 3 ' are formed energy-storage system.Purpose is an energy reserve, and the high voltage that superposes on output voltage when being used for exchanging commutation makes commutation process stable, not current interruption.Its principle is: when transistor (as 4 ' and the 7 ') conducting of a diagonal angle brachium pontis becomes shutoff, reactor conduction period energy stored can be capacitor 3 ' charging, what make that voltage is higher than inverter 1 ' on the capacitor is output voltage, when transistor (as 5 ' and the 6 ') conducting of another diagonal angle brachium pontis, for a high voltage is provided between argon-arc welding gun and workpiece, transistor (as 5 ' and the 6 ') conducting of same diagonal angle brachium pontis becomes when turn-offing, reactor conduction period energy stored can be capacitor 3 ' charging, what make that voltage is higher than inverter 1 ' on the capacitor is output voltage.During the transistor of diagonal angle brachium pontis (as 4 ' and 7 ') conducting, for a high voltage is provided between argon-arc welding gun and workpiece.Like this, will be at higher pulse spike voltage of its forward position stack when positive and negative pulse voltage commutates.Stable to satisfy welding process, 10 ' is and is voltage waveform between argon-arc welding gun and workpiece among the welding requirements figure of not current interruption, wherein 11 ' the peak voltage that produces when promptly being the brachium pontis commutation.
Generally adopt the reactor of structure shown in Figure of description 2 in this contravariant alternating-current argon arc welder structure shown in Figure 1, it comprises the iron core 13 ' that is provided with fixed size air gap 14 ', cooperates the helical winding 12 ' that is installed on this iron core 13 '; The shortcoming of the reactor of this kind structure is: the width of air gap of core of reactor is consistent, and its inductance value will be a constant.When being applied in the inductive energy storage of any brachium pontis conduction period reactor 2 of contravariant alternating-current argon arc welder as shown in Figure 1, give power transfer capacitor 3. according to law of conservation of energy turn-offing in a flash:
Formula (1) (1/2) * I2*L=(1/2) * Up2*C
As can be known, formula (2) Up=I* √ L/C
Can draw: along with welding current becomes big, the peak voltage on the capacitor 3 can increase by direct proportion.
Shown in the inductance value of as shown in Figure 3 this kind of structure reactor and the variation relation figure of electric current: the inductance value of the reactor of this kind structure does not change with the variation of electric current, is a constant.
On the storage capacitor of the contravariant alternating-current argon arc welder of this kind of employing structure reactor as shown in Figure 4 shown in the variation relation figure of peak voltage and electric current: the inductance value of the reactor of this kind structure does not change with the variation of electric current, and causing peak voltage on the storage capacitor 3 ' of contravariant alternating-current argon arc welder among Fig. 1 to be ratio with the increase of welding current increases.
Like this, the peak voltage of commutating pulse size electric current can not be taken into account during welding.When little current spike voltage amplitude is suitable, big electric current just has very high peak voltage, to transistor 4 ', 5 ', 6 ', 7 ' and storage capacitor bring very big threat, its voltage stress raises at double, and the probability of damage sharply rises, and must adopt clamp circuit by force it to be clamped on a certain safety value usually, clamp circuit adopts and makes the welding machine cost rise, and causes the welding machine efficiency index to descend; When big current spike voltage amplitude was suitable, the peak voltage amplitude was not enough again during little electric current, and very easily current interruption has a strong impact on the stability of welding.
The Chinese invention patent publication number discloses a kind of Regulatable reactor for " CN1591711 " denomination of invention for the patent of invention of " rotary iron core formula Regulatable reactor ", the iron core of this kind reactor is made up of secured core and movable core two parts, movable core places the opening part of secured core, the movable core rotating shaft is the silicon steel sheet normal direction, rotary iron core forms movable the connection by fixed support and secured core opening edge, rotate rotary iron core, can change the relative angle between rotary iron core and the secured core.
Adopt the Regulatable reactor of this kind structure to solve the problems of the technologies described above, this kind structure reactor structure is multiple, use cost is higher but adopt, and adopts the reactor of this kind structure to need artificial adjusting to use simultaneously, uses also comparatively trouble.
Summary of the invention
The technical problems to be solved in the utility model provide a kind of simple in structure, can change the linear swing reactor that changes its inductance value with flowing through electric current.
The technical problems to be solved in the utility model also is to provide a kind of said structure swing reactor of adopting
The utility model is achieved through the following technical solutions:
A kind of swing reactor of the present utility model comprises: be provided with the iron core of air gap, cooperate the helical winding that is installed on this iron core, wherein, described air gap is an open wedge; This swing core of reactor air gap is not the fixed value size, but open wedge, adopt of the increase of this kind structure along with electric current, the iron core of this swing reactor can be pressed the ascending fractional saturation respectively of air gap by air gap, inductance value will reduce in proportion gradually, and by aforementioned formula (2) as can be known, the crest voltage during commutation keeps with steady state value, as seen, this swing reactor simple in structure, can change linear its inductance value that changes with flowing through electric current.
As improvement, the rectangular triangle in the cross section of described air gap.
As improvement, the Breadth Maximum of the open wedge of described air gap is at least two times of existing fixed size width of air gap.
A kind of contravariant alternating-current argon arc welder, comprise: the constant-current supply that is used for input direct voltage, the secondary inverter bridge that is connected with this constant-current supply through reactor, the argon arc welding welding gun and the welded part that are connected respectively with this secondary inverter bridge left and right sides brachium pontis mid point, wherein, described swing reactor comprises: the iron core that is provided with air gap, cooperate the helical winding that is installed on this iron core, described air gap is an open wedge; Because adopt the reactor of this kind structure, when the welding current voltage commutation, the peak voltage constant amplitude unanimity of commutating pulse can be taken into account big or small electric current fully.
On the basis of said structure, described secondary inverter bridge is made up of first, second, third, fourth transistor, this the first, the 4th transistor adopts one group with the synchronous pulsed drive of frequency, this second, third transistor adopts another group with the synchronous pulsed drive of frequency, and these two groups of driving pulses are with 180 degree of phase phasic difference frequently.
A kind of swing reactor of the present utility model comprises: be provided with the iron core of air gap, cooperate the helical winding that is installed on this iron core, wherein, described air gap is an open wedge; This swing core of reactor air gap is not the fixed value size, but open wedge, adopt of the increase of this kind structure along with electric current, the iron core of this swing reactor can be pressed the ascending fractional saturation respectively of air gap by air gap, inductance value will reduce in proportion gradually, and by aforementioned formula (2) as can be known, the crest voltage during commutation keeps with steady state value, as seen, this swing reactor simple in structure, can change linear its inductance value that changes with flowing through electric current.
Adopt the contravariant alternating-current argon arc welder of said structure swing reactor, when the welding current voltage commutation, the peak voltage constant amplitude unanimity of commutating pulse can be taken into account big or small electric current fully.
Description of drawings
In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.
A kind of existing at present contravariant alternating-current argon arc welder circuit theory schematic diagram that generally adopts shown in Figure 1;
Fig. 2 is the structural representation of the reactor that adopts among Fig. 1;
Fig. 3 is the inductance value of reactor among Fig. 2 and the variation relation figure of electric current;
Fig. 4 is the variation relation figure of peak voltage and electric current on the storage capacitor of contravariant alternating-current argon arc welder of reactor of reactor among Fig. 2;
Fig. 5 is the structural representation of swing reactor of the present utility model;
Fig. 6 is the contravariant alternating-current argon arc welder circuit theory schematic diagram that adopts as reactor among Fig. 5;
Fig. 7 is the inductance value of reactor among Fig. 5 and the variation relation figure of electric current;
Fig. 8 is the variation relation figure of peak voltage and electric current on the storage capacitor of contravariant alternating-current argon arc welder of reactor of reactor among Fig. 5.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
See also shown in Fig. 5-7, a kind of swing reactor of the present utility model comprises: be provided with the iron core 13 of air gap 14, cooperate the helical winding that is installed on this iron core 13, wherein, described air gap 14 is an open wedge; These swing core of reactor 13 air gaps 14 are not the fixed value sizes, but open wedge, adopt of the increase of this kind structure along with electric current, the iron core of this swing reactor can be pressed air gap 14 ascending fractional saturations respectively by air gap 14, inductance value will reduce in proportion gradually, and by aforementioned formula (2) as can be known, the crest voltage during commutation keeps with steady state value, as seen, this swing reactor simple in structure, can change linear its inductance value that changes with flowing through electric current.
In this embodiment, the rectangular triangle in the cross section of described air gap 14.
This embodiment, the Breadth Maximum of the open wedge of described air gap 14 is at least two times of existing fixed size air gap 14 ' width.
A kind of contravariant alternating-current argon arc welder as shown in Figure 8, comprise: the constant-current supply 1 that is used for input direct voltage, the secondary inverter bridge that is connected with this constant-current supply 1 through reactor 2, the argon arc welding welding gun 8 and the welded part 9 that are connected respectively with this secondary inverter bridge left and right sides brachium pontis mid point, wherein, described swing reactor 2 is a reactor as shown in Figure 5, comprising: comprise the iron core 13 that is provided with air gap 14 with it, cooperate the helical winding 12 that is installed on this iron core 13, described air gap 14 is an open wedge; Because adopt the reactor 2 of this kind structure, when the welding current voltage commutation, the peak voltage constant amplitude unanimity of commutating pulse can be taken into account big or small electric current fully.
On the basis of said structure, described secondary inverter bridge is made up of first, second, third, fourth transistor 4,5,6,8, this the first, the 4th transistor 4,7 adopts one group with the synchronous pulsed drive of frequency, this second, third transistor 5,6 adopts another group with the synchronous pulsed drive of frequency, and these two groups of driving pulses are with 180 degree of phase phasic difference frequently.
When transistor (as the 4 and 7) conducting of a diagonal angle brachium pontis becomes shutoff, reactor 2 conduction period energy stored can be capacitor 3 chargings, what make that voltage is higher than inverter 1 on the capacitor 3 is output voltage, when transistor (as the 5 and 6) conducting of another diagonal angle brachium pontis, for a high voltage is provided between argon-arc welding gun and workpiece, transistor (as the 5 and 6) conducting of same diagonal angle brachium pontis becomes when turn-offing, reactor conduction period energy stored can be capacitor 3 chargings, what make that voltage is higher than inverter 1 on the capacitor is output voltage.During the transistor of diagonal angle brachium pontis (as 4 and 7) conducting, for a high voltage is provided between argon-arc welding gun and workpiece. like this, will be at higher pulse spike voltage of its forward position stack when positive and negative pulse voltage commutates.
The embodiment of the above is a better embodiment of the present utility model, is not to limit concrete practical range of the present utility model with this, and the equivalence that all shapes according to the utility model, structure are done changes all in protection range of the present utility model.
Claims (4)
1. a swing reactor comprises: be provided with the iron core of air gap, cooperate the helical winding that is installed on this iron core, it is characterized in that described air gap is an open wedge.
2. swing reactor according to claim 1 is characterized in that: the rectangular triangle in the cross section of described air gap.
3. contravariant alternating-current argon arc welder, comprise: the constant-current supply that is used for input direct voltage, the secondary inverter bridge that is connected with this constant-current supply through reactor, the argon arc welding welding gun and the welded part that are connected respectively with this secondary inverter bridge left and right sides brachium pontis mid point, it is characterized in that described swing reactor comprises: the iron core that is provided with air gap, cooperate the helical winding that is installed on this iron core, described air gap is an open wedge.
4. contravariant alternating-current argon arc welder according to claim 3, it is characterized in that: described secondary inverter bridge is made up of first, second, third, fourth transistor, this the first, the 4th transistor adopts one group with the synchronous pulsed drive of frequency, this second, third transistor adopts another group with the synchronous pulsed drive of frequency, and these two groups of driving pulses are with 180 degree of phase phasic difference frequently.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920261237XU CN201600983U (en) | 2009-12-11 | 2009-12-11 | Swing electric reactor and contravariant AC argon arc welder using electric reactor |
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| CN200920261237XU CN201600983U (en) | 2009-12-11 | 2009-12-11 | Swing electric reactor and contravariant AC argon arc welder using electric reactor |
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| CN201600983U true CN201600983U (en) | 2010-10-06 |
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| CN200920261237XU Expired - Fee Related CN201600983U (en) | 2009-12-11 | 2009-12-11 | Swing electric reactor and contravariant AC argon arc welder using electric reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911316A (en) * | 2015-12-23 | 2017-06-30 | 群光电能科技股份有限公司 | Filtration module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911316A (en) * | 2015-12-23 | 2017-06-30 | 群光电能科技股份有限公司 | Filtration module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN HUAYILONG ELECTRIC CO., LTD. Free format text: FORMER NAME: SHENZHEN HUAYILONG INDUSTRIAL DEVELOPMENT CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong city of Shenzhen province Nanshan District Xili town honghualing Industrial District Three District Building Patentee after: Shenzhen Huayilong Industrial Development Co., Ltd Address before: Shenzhen Nanshan District City, Guangdong province 518000 Liuxian Avenue honghualing Industrial Zone District three building first, fourth, sixth floor East Patentee before: Shenzhen HuaYiLong Industrial Development Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20171211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |