CN104601018A - Double power supply with protecting circuit for multifunctional argon arc welding machine - Google Patents
Double power supply with protecting circuit for multifunctional argon arc welding machine Download PDFInfo
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- CN104601018A CN104601018A CN201510032405.8A CN201510032405A CN104601018A CN 104601018 A CN104601018 A CN 104601018A CN 201510032405 A CN201510032405 A CN 201510032405A CN 104601018 A CN104601018 A CN 104601018A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/40—Conversion of ac power input into dc power output without possibility of reversal by combination of static with dynamic converters; by combination of dynamo-electric with other dynamic or static converters
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Abstract
The invention discloses a double power supply with a protecting circuit for a multifunctional argon arc welding machine, and relates to the technical field of welding machines. An AC power supply is respectively connected one end of a power selection switch, one end of a combination switch, a pin 0 of a second transformer and common ends of 220V and 380V acquiring ports of a double-power supply protecting circuit board; the other end of the power selection switch is connected with one end of a voltage selection switch; the voltage election switch and the combination switch form a linkage combined assisting switch; the other end of the voltage section switch is connected with one end of a normally-closed contact of a relay, one end of the normally-closed contact of a second relay, and 380V and 220V acquiring ends of the double-power supply protecting circuit board; the other end of the normally-closed contact of the relay and the other end of the normally-closed contact of the second relay are respectively connected with pins 1 and 2 of a second transformer. According to the double power supply, the voltage conversion switches with the linkage function are ingeniously combined and designed, and therefore, the circuit has double guarantee to avoid mis-operation of switching under normal voltage, and the cost is low.
Description
Technical field:
The present invention relates to a kind of Multifunctional argon arc welding machine duplicate supply with protective circuit, belong to welding machine technical field.
Background technology:
If the access of input power mistake can bring fault, namely primary should access single-phase 220V but misconnection enters 380V, can cause overexcitation and burn transformer and interlock circuit; Or primary should access single-phase 380V but misconnection enters 220V then can cause underexcitation and under-voltage, and welding machine is failure to actuate or misoperation.
Summary of the invention:
For the problems referred to above, the technical problem to be solved in the present invention is to provide a kind of Multifunctional argon arc welding machine duplicate supply with protective circuit.
A kind of Multifunctional argon arc welding machine duplicate supply with protective circuit of the present invention, it comprises control mainboard, duplicate supply protective circuit plate, main contactor, transformer one, transformer two, power selection switch, voltage-selected switch, unit switch, AC power respectively with one end of power selection switch, one end of unit switch, 0 pin of transformer two, the common port that 220V with 380V of duplicate supply protective circuit plate gathers in port is connected, the other end of power selection switch is connected with one end of voltage-selected switch, voltage-selected switch and unit switch form to link and combine auxiliary switch, the other end of voltage-selected switch respectively with one end of relay one normally-closed contact, one end of relay two normally-closed contact, 380V with the 220V collection terminal of duplicate supply protective circuit plate is connected, the other end of relay one normally-closed contact, the other end of relay two normally-closed contact respectively with 1 pin of transformer two, 2 pin connect, 8 pin of transformer two are connected with 7 pin controlling mainboard by main contactor, 9 pin of transformer two are connected with 6 pin controlling mainboard by fuse, the other end of unit switch is connected with one end of transformer one, and the other end of transformer one is by being connected with control mainboard after current transformer isolation.
As preferably, described duplicate supply protective circuit plate comprises 380V loop and gathers potential circuit and gather potential circuit with 220V loop, and 380V loop collection potential circuit comprises transformer three, bridge heap rectification circuit two, electric capacity two, electric capacity six, voltage-stabiliser tube two, triode two, triode three, relay two, 1 pin of connector two is connected with one end of transformer three respectively with 5 pin, and the other end of transformer three piles 1 pin of rectification circuit two respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit two, 4 pin respectively with the two ends of electric capacity two, the two ends of electric capacity six, one end of potentiometer, one end of resistance three connects, the other end of potentiometer, the other end of resistance three is all connected with the negative pole of voltage-stabiliser tube two, and the positive pole of voltage-stabiliser tube two is connected with the base stage of triode two, and the emitter of triode two is connected and ground connection with the emitter of triode three, and the collector electrode of triode two is respectively by resistance four, the base stage of resistance five and triode three, the negative pole of diode two, one end of relay two coil connects, the collector electrode of triode three respectively with the other end of relay two coil, the positive pole of diode two connects.
As preferably, described 220V loop gathers potential circuit and comprises transformer four, electric capacity one, triode one, bridge heap rectification circuit one, voltage detector, 1 pin of connector one, 5 pin are connected with one end of transformer one respectively, the other end of transformer one piles 1 pin of rectification circuit one respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit one respectively with the positive pole of electric capacity one, one end of electric capacity three, the negative pole of voltage-stabiliser tube one, the negative pole of diode one, one end of relay one coil connects, 4 pin of bridge heap rectification circuit one respectively with the negative pole of electric capacity one, the other end of electric capacity three, one end of resistance one, 3 pin of voltage detector, the emitter of triode one connects and ground connection, the other end of resistance one respectively with the positive pole of voltage-stabiliser tube one, 2 pin of voltage detector connect, 1 pin of voltage detector is connected with the base stage of triode one by resistance two, the collector electrode of triode one respectively with the positive pole of diode two, the other end of relay one coil connects.
Beneficial effect of the present invention is:
One, by having the ingenious Combination Design of the voltage change-over switch of linkage function, make circuit have double insurance and guarantee the incorrect switching in the correct situation of voltage, low of cost need increase a multi-gear switch of connecting with principal voltage selector switch on front panel simultaneously.
Two, when switch is correct but virtual voltage mistake accesses, can be dealt with problems by simple and practical protection warning circuit, the low actual motion of this circuit cost is respond well.Especially have employed the integrated voltage detector of integrated three end of up-to-date height, utilize its distinctive voltage to return stagnant feature and can avoid interference the misoperation that voltage causes well, especially the surge voltage when starting is come interim, it can start rapidly avoids surge voltage to enter control circuit, automatically again judge after waiting for the residence time that input detects voltage, if its state of deactivating of normal circuit, otherwise continue to keep operating state.
Accompanying drawing illustrates:
For ease of illustrating, the present invention is described in detail by following concrete enforcement and accompanying drawing.
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic diagram that in the present invention, 380V loop gathers potential circuit;
Fig. 3 is the schematic diagram that in the present invention, 220V loop gathers potential circuit;
Embodiment:
For making the object, technical solutions and advantages of the present invention clearly understand, below by the specific embodiment shown in accompanying drawing, the present invention is described.But should be appreciated that, these describe just exemplary, and do not really want to limit the scope of the invention.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present invention.
As Figure 1-3, this embodiment by the following technical solutions: it comprises control mainboard U1, duplicate supply protective circuit plate B75, main contactor MS1, transformer one BK1, transformer two BK2, power selection switch S1, voltage-selected switch S0-1, unit switch S0, AC power respectively with one end of power selection switch S1, one end of unit switch S0, 0 pin of transformer two BK2, the common port that 220V with 380V of duplicate supply protective circuit plate B75 gathers in port is connected, the other end of power selection switch S1 is connected with one end of voltage-selected switch S0-1, voltage-selected switch S0-1 and unit switch S0 forms to link and combines auxiliary switch, the other end of voltage-selected switch S0-1 respectively with one end of relay one K1 normally-closed contact K1-1, one end of relay two K2 normally-closed contact K2-1, 380V with the 280V collection terminal of duplicate supply protective circuit plate B75 is connected, the other end of relay one K1 normally-closed contact K1-1, the other end of relay two K2 normally-closed contact K2-1 respectively with 1 pin of transformer two BK2, 2 pin connect, 8 pin of transformer two BK2 are connected with 7 pin controlling mainboard U1 by main contactor MS1,9 pin of transformer two BK2 are connected with 6 pin controlling mainboard U1 by fuse FU1, the other end of unit switch S0 is connected with one end of transformer one BK1, and the other end of transformer one BK1 is by being connected with control mainboard U1 after current transformer isolation.
Single phase poaer supply (single-phase 220V or single-phase 380V) is accessed by the binding post of welding machine rear board, single phase poaer supply major loop heavy current is by A.C. contactor MS1 then voltage selective switchgear, S0 main contacts connecting band tapped 380V/220V welder power main transformer is elementary, then goes out suitable voltage by main transformer secondary transformation and adds welding circuit; Before main contactor action, carry out necessary voltage judge, only in correct input power situation, welding machine could normally work, otherwise sends alarm signal and ensure that main contactor MS1 is in off position.
Further, described duplicate supply protective circuit plate B75 comprises 380V loop collection potential circuit and 220V loop gathers potential circuit, and 380V loop gathers potential circuit and comprises transformer three BKR2, bridge heap rectification circuit two BR2, electric capacity two C2, electric capacity six C6, voltage-stabiliser tube two ZD2, triode two Q2, triode three Q3, 1 pin of relay two K2, connector two B702 is connected with one end of transformer three BKR2 respectively with 5 pin, and the other end of transformer three BKR2 piles 1 pin of rectification circuit two BR2 respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit two BR2, 4 pin respectively with the two ends of electric capacity two C2, the two ends of electric capacity six C6, one end of potentiometer VR1, one end of resistance three R3 connects, the other end of potentiometer VR1, the other end of resistance three R3 is all connected with the negative pole of voltage-stabiliser tube two ZD2, the positive pole of voltage-stabiliser tube two ZD2 is connected with the base stage of triode two Q2, the emitter of triode two Q2 is connected and ground connection with the emitter of triode three Q3, and the collector electrode of triode two Q2 is respectively by resistance four R4, the base stage of resistance five R5 and triode three Q3, the negative pole of diode two D2, one end of relay two K2 coil connects, the collector electrode of triode three Q3 respectively with the other end of relay two K2 coil, the positive pole of diode two D2 connects.
380V loop gathers voltage and is filtered into constant DC voltage V1 through control transformer three BKR2 (380V/18V) transformation, bridge heap rectification circuit two BR2, electric capacity two C2, this voltage obtains suitable V2 magnitude of voltage by potentiometer VR1 and resistance three R3 can puncture voltage-stabiliser tube two ZD2 smoothly, and be that triode two Q2 normally works, V3 point voltage is made triode three Q3 not work by clamper, thus relay two K2 does not work, its relay two K2 normally-closed contact K2-1 is remained closed, then actual 380V input voltage normal through and enter control transformer two BK2.If this primary Ioops collects abnormal 220V voltage, V2 voltage can be made to be difficult to puncture ZD2 through the above-mentioned course of work, Q2 does not work, Q3 work simultaneously, final relay two K2 works, make its relay two K2 normally-closed contact K2-1 action, then actual 220V input abnormal voltage is difficult to by and enters control transformer two BK2.
Further, described 220V loop gathers potential circuit and comprises transformer four BR1, electric capacity one C1, triode one Q1, bridge heap rectification circuit one BR1, high integrated specialized voltages detector U2, 1 pin of connector one B701, 5 pin are connected with one end of transformer one BKR1 respectively, the other end of transformer one BKR1 piles 1 pin of rectification circuit one BR1 respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit one BR1 respectively with the positive pole of electric capacity one C1, one end of electric capacity three C3, the negative pole of voltage-stabiliser tube one ZD1, the negative pole of diode one D1, one end of relay one K1 coil connects, 4 pin of bridge heap rectification circuit one BR1 respectively with the negative pole of electric capacity one C1, the other end of electric capacity three C3, one end of resistance one R1, 3 pin of high integrated specialized voltages detector U2, the emitter of triode one Q1 connects and ground connection, the other end of resistance one R1 respectively with the positive pole of voltage-stabiliser tube one ZD1, 2 pin of high integrated specialized voltages detector U2 connect, 1 pin of high integrated specialized voltages detector U2 is connected with the base stage of triode one Q1 by resistance two R2, the collector electrode of triode one Q1 respectively with the positive pole of diode two D1, the other end of relay one K1 coil connects.
220V loop gathers voltage and is filtered into constant DC voltage V4 through control transformer four BKR1 (220V/9V) transformation, bridge heap rectification circuit one BR1, electric capacity one C1, this magnitude of voltage can not puncture voltage-stabiliser tube one ZD1 and enter the integrated height of three ends integrated specialized voltages detector U2, thus triode one Q1 does not work, relay one K1 does not work, its relay one K1 normally-closed contact K1-1 is remained closed, then actual 220V input voltage normal through and enter control transformer two BK2.If this primary Ioops collects abnormal 380V voltage, V4 voltage can be made to be punctured ZD1 through the above-mentioned course of work, and by the height integrated specialized voltages detector U2 that three ends are integrated, Q1 is worked, final relay one K1 works, make its relay one K1 normally-closed contact K1-1 action, then actual 380V input abnormal voltage is difficult to by and enters control transformer two BK2.Thus main contactor MS1 is not worked, guarantee circuit safety.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection range is defined by appending claims and equivalent thereof.
Claims (3)
1. the Multifunctional argon arc welding machine duplicate supply with protective circuit, it is characterized in that: it comprises control mainboard (U1), duplicate supply protective circuit plate (B75), main contactor (MS1), transformer one (BK1), transformer two (BK2), power selection switch (S1), voltage-selected switch (S0-1), unit switch (S0), AC power respectively with one end of power selection switch (S1), one end of unit switch (S0), 0 pin of transformer two (BK2), the common port that 220V with 380V of duplicate supply protective circuit plate (B75) gathers in port is connected, the other end of power selection switch (S1) is connected with one end of voltage-selected switch (S0-1), voltage-selected switch (S0-1) and unit switch (S0) form to link and combine auxiliary switch, the other end of voltage-selected switch (S0-1) respectively with one end of relay one (K1) normally-closed contact (K1-1), one end of relay two (K2) normally-closed contact (K2-1), 380V with the 220V collection terminal of duplicate supply protective circuit plate (B75) is connected, the other end of relay one (K1) normally-closed contact (K1-1), the other end of relay two (K2) normally-closed contact (K2-1) respectively with 1 pin of transformer two (BK2), 2 pin connect, 8 pin of transformer two (BK2) are connected with 7 pin controlling mainboard (U1) by main contactor (MS1), 9 pin of transformer two (BK2) are connected with 6 pin controlling mainboard (U1) by fuse (FU1), the other end of unit switch (S0) is connected with one end of transformer one (BK1), the other end of transformer one (BK1) is by being connected with control mainboard (U1) after current transformer isolation.
2. a kind of Multifunctional argon arc welding machine duplicate supply with protective circuit according to claim 1, it is characterized in that: described duplicate supply protective circuit plate (B75) comprises 380V loop collection potential circuit and 220V loop gathers potential circuit, 380V loop gathers potential circuit and comprises transformer three (BKR2), bridge heap rectification circuit two (BR2), electric capacity two (C2), electric capacity six (C6), voltage-stabiliser tube two (ZD2), triode two (Q2), triode three (Q3), relay two (K2), 1 pin of connector two (B702) is connected with one end of transformer three (BKR2) respectively with 5 pin, and the other end of transformer three (BKR2) piles 1 pin of rectification circuit two (BR2) respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit two (BR2), 4 pin respectively with the two ends of electric capacity two (C2), the two ends of electric capacity six (C6), one end of potentiometer (VR1), one end of resistance three (R3) connects, the other end of potentiometer (VR1), the other end of resistance three (R3) is all connected with the negative pole of voltage-stabiliser tube two (ZD2), the positive pole of voltage-stabiliser tube two (ZD2) is connected with the base stage of triode two (Q2), the emitter of triode two (Q2) is connected and ground connection with the emitter of triode three (Q3), and the collector electrode of triode two (Q2) is respectively by resistance four (R4), the base stage of resistance five (R5) and triode three (Q3), the negative pole of diode two (D2), one end of relay two (K2) coil connects, the collector electrode of triode three (Q3) respectively with the other end of relay two (K2) coil, the positive pole of diode two (D2) connects, 380V loop gathers voltage through control transformer three (BKR2) transformation, bridge heap rectification circuit two (BR2), electric capacity two (C2) is filtered into constant DC voltage V1, this voltage obtains suitable V2 magnitude of voltage by potentiometer (VR1) and resistance three (R3) can puncture voltage-stabiliser tube two (ZD2) smoothly, and be that triode two (Q2) normally works, V3 point voltage is made triode three (Q3) not work by clamper, thus relay two (K2) does not work, its relay two (K2) normally-closed contact (K2-1) is remained closed, then actual 380V input voltage normal through and enter control transformer two (BK2), if this primary Ioops collects abnormal 220V voltage, V2 voltage can be made to be difficult to puncture (ZD2) through the above-mentioned course of work, (Q2) do not work, (Q3) work simultaneously, final relay two (K2) work, make its relay two (K2) normally-closed contact (K2-1) action, then actual 220V input abnormal voltage is difficult to by and enters control transformer two (BK2).
3. a kind of Multifunctional argon arc welding machine duplicate supply with protective circuit according to claim 2, is characterized in that: described 220V loop gathers potential circuit and comprises transformer four (BR1), electric capacity one (C1), triode one (Q1), bridge heap rectification circuit one (BR1), high integrated specialized voltages detector (U2), 1 pin of connector one (B701), 5 pin are connected with one end of transformer one (BKR1) respectively, and the other end of transformer one (BKR1) piles 1 pin of rectification circuit one (BR1) respectively with bridge, 3 pin connect, 2 pin of bridge heap rectification circuit one (BR1) respectively with the positive pole of electric capacity one (C1), one end of electric capacity three (C3), the negative pole of voltage-stabiliser tube one (ZD1), the negative pole of diode one (D1), one end of relay one (K1) coil connects, 4 pin of bridge heap rectification circuit one (BR1) respectively with the negative pole of electric capacity one (C1), the other end of electric capacity three (C3), one end of resistance one (R1), 3 pin of high integrated specialized voltages detector (U2), the emitter of triode one (Q1) connects and ground connection, the other end of resistance one (R1) respectively with the positive pole of voltage-stabiliser tube one (ZD1), 2 pin of high integrated specialized voltages detector (U2) connect, 1 pin of high integrated specialized voltages detector (U2) is connected with the base stage of triode one (Q1) by resistance two (R2), the collector electrode of triode one (Q1) respectively with the positive pole of diode two (D1), the other end of relay one (K1) coil connects, 220V loop gathers voltage and is filtered into constant DC voltage V4 through control transformer four (BKR1) transformation, bridge heap rectification circuit one (BR1), electric capacity one (C1), this magnitude of voltage can not puncture voltage-stabiliser tube one (ZD1) and enter the integrated specialized voltages detector (U2) of the integrated height of three ends, thus triode one (Q1) does not work, relay one (K1) does not work, its relay one (K1) normally-closed contact (K1-1) is remained closed, then actual 220V input voltage normal through and enter control transformer two (BK2), if this primary Ioops collects abnormal 380V voltage, V4 voltage can be made to be punctured (ZD1) through the above-mentioned course of work, and by the integrated specialized voltages detector (U2) of height that three ends are integrated, (Q1) is worked, final relay one (K1) work, make its relay one (K1) normally-closed contact (K1-1) action, then actual 380V input abnormal voltage is difficult to by and enters control transformer two (BK2), thus main contactor (MS1) is not worked, guarantee circuit safety.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032405.8A CN104601018B (en) | 2015-01-16 | 2015-01-16 | A kind of Multifunctional argon arc welding machine dual power supply with protection circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510032405.8A CN104601018B (en) | 2015-01-16 | 2015-01-16 | A kind of Multifunctional argon arc welding machine dual power supply with protection circuit |
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| Publication Number | Publication Date |
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| CN104601018A true CN104601018A (en) | 2015-05-06 |
| CN104601018B CN104601018B (en) | 2017-03-08 |
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| CN201510032405.8A Expired - Fee Related CN104601018B (en) | 2015-01-16 | 2015-01-16 | A kind of Multifunctional argon arc welding machine dual power supply with protection circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113708610A (en) * | 2021-07-30 | 2021-11-26 | 浙江振圣机电科技有限公司 | Full voltage controller |
| US11192201B2 (en) | 2018-08-24 | 2021-12-07 | Shanghai Hugong Electric (Group) Co., Ltd. | Double-power-supply switching control system for a welding machine and method |
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| CN203541810U (en) * | 2013-09-23 | 2014-04-16 | 无锡精工焊接设备有限公司 | Double-voltage inversion direct-current arc welding machine |
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| CN204425202U (en) * | 2015-01-16 | 2015-06-24 | 晋中职业技术学院 | A kind of Multifunctional argon arc welding machine duplicate supply with protective circuit |
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Patent Citations (5)
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| CN102079002A (en) * | 2011-01-26 | 2011-06-01 | 深圳华意隆电气股份有限公司 | Inverter welding and cutting machine with dual-voltage system |
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| US11192201B2 (en) | 2018-08-24 | 2021-12-07 | Shanghai Hugong Electric (Group) Co., Ltd. | Double-power-supply switching control system for a welding machine and method |
| CN113708610A (en) * | 2021-07-30 | 2021-11-26 | 浙江振圣机电科技有限公司 | Full voltage controller |
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| CN104601018B (en) | 2017-03-08 |
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