CN203197442U - Energy-saving circuit of electric welding machine - Google Patents
Energy-saving circuit of electric welding machine Download PDFInfo
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- CN203197442U CN203197442U CN 201320177919 CN201320177919U CN203197442U CN 203197442 U CN203197442 U CN 203197442U CN 201320177919 CN201320177919 CN 201320177919 CN 201320177919 U CN201320177919 U CN 201320177919U CN 203197442 U CN203197442 U CN 203197442U
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Abstract
The utility model relates to an energy-saving circuit of an electric welding machine. The energy-saving circuit comprises a transformer B, normally open contacts KM1 of a power supply fuse RD and a contactor KM connected into two ends of a primary coil of the transformer B and normally closed contacts KA2 of the contactor KM and a relay KA connected to the two ends of the primary coil, wherein the normally open contact KM1 of the contactor KM is connected with a capacitor C1; two ends of a secondary coil of the transformer B are connected with a rectifying circuit D composed of D1, D2, D3 and D4; and the output end of the rectifying circuit D is connected with a circuit composed of triodes Q1 and Q2. The energy-saving circuit of the electric welding machine can automatically reduce the no-load loss of the electric welding machine when the electric welding machine is no-load.
Description
Technical field
The utility model relates to electronic technology field, is specifically related to a kind of energy-saving circuit for electric welding machine.
Background technology
The A.C. welder operation principle is that the commercial power by 220V voltage or 380V has reduced voltage by the pressure reducer in the electric welding machine, strengthened electric current, the huge heat that utilizes electric energy to produce melts iron and steel, welding rod to incorporate the amalgamation that makes between the iron and steel higher, electric welding machine is intermittently used when actual welding is worked, no-load power consumption in intermittent phase can reach several hectowatts, has directly wasted a large amount of power resources.If the artificial open and close welder power ceaselessly for power saving again can waste of manpower and influence the operating efficiency of electric welding machine, therefore, the open circuit loss that reduces electric welding machine has important and practical meanings.
Summary of the invention
The purpose of this utility model provides a kind of electric welding machine energy-saving circuit, can reduce the open circuit loss of electric welding machine automatically when electric welder no-load.
The technical solution of the utility model is as follows: a kind of electric welding machine energy-saving circuit, comprise transformer B, and insert the power safety RD at transformer B primary coil two ends and the normally opened contact KM of contactor KM
1, be connected to the contactor KM at primary coil two ends and the normally-closed contact KA of relay K A
2, the normally opened contact KM of contactor KM
1And be connected to capacitor C 1, transformer B secondary coil two ends are connected with by D1, D2, D3, the rectification circuit D that D4 forms, filter capacitor C2, resistance R 1 is attempted by the output of rectification circuit D, the base stage of triode Q1 is connected the output of rectification circuit D by diode D5, colelctor electrode is connected the output of rectification circuit D, emitter stage is connected with the base stage of triode Q2, the colelctor electrode of triode Q2 is connected the output of rectification circuit D, the emitter stage of triode Q2 by and the relay K A that connects be connected with the resistance R 3 that is connected rectification circuit D output with diode D6, capacitor C 3 is attempted by triode Q1 base stage and rectification circuit D output, and resistance R 2 is connected the base stage of triode Q1 and the output of rectification circuit D.
Preferably, the input at circuit power is connected with power switch DK.
The operation principle of the utility model electric welding machine energy-saving circuit is, by detecting the voltage of electric welding machine output, control the action of a contactor according to the height of electric welding machine output end voltage, decompression capacitor of serial connection in the input electric power loop, electric capacity is in parallel with the normally opened contact of contactor.The electric welding machine output presents low-voltage state during the electric welding machine welding, voltage detecting circuit control contactor normally opened contact closure, and input power supply full voltage is powered to electric welding machine, and electric welding machine normally welds.When electric welding machine stops welding zero load, the electric welding machine output presents high-voltage state, voltage detecting circuit control contactor normally opened contact disconnects, the input power supply is powered to electric welding machine by the decompression capacitor that is serially connected in the loop, electric welding machine is operated in the step-down power supply state at this moment, only keep the supply voltage of voltage detecting circuit, have only very little power consumption.When welding again, the automatic control contactor normally opened contact of voltage detecting circuit closure, input power supply full voltage is powered to electric welding machine, and electric welding machine normally welds.So just realized the purpose of electric welder no-load automatic stop economize on electricity.
The utility model electric welding machine energy-saving circuit also has function when slow, exactly when stopping welding zero load at every turn, just controls electric welding machine in about 10 seconds in the time of late and enters the step-down power supply state, has avoided the drawback of control contactor frequent movement.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of electric welding machine energy-saving circuit comprises transformer B, inserts the power safety RD at transformer B primary coil two ends and the normally opened contact KM of contactor KM
1, be connected to the contactor KM at primary coil two ends and the normally-closed contact KA of relay K A
2, the normally opened contact KM of contactor KM
1And be connected to capacitor C 1, transformer B secondary coil two ends are connected with by D1, D2, D3, the rectification circuit D that D4 forms, filter capacitor C2, resistance R 1 is attempted by the output of rectification circuit D, the base stage of triode Q1 is connected the output of rectification circuit D by diode D5, colelctor electrode is connected the output of rectification circuit D, emitter stage is connected with the base stage of triode Q2, the colelctor electrode of triode Q2 is connected the output of rectification circuit D, the emitter stage of triode Q2 by and the relay K A that connects be connected with the resistance R 3 that is connected rectification circuit D output with diode D6, capacitor C 3 is attempted by triode Q1 base stage and rectification circuit D output, and resistance R 2 is connected the base stage of triode Q1 and the output of rectification circuit D.
During electric welding machine energising operation, the input power supply is through the normally-closed contact KA of battery main switch DK, insurance RD and relay K A
2Supply with contactor KM power supply, the normally opened contact KM of KM
1Closure, the input power supply is again through the normally opened contact KM of contactor KM
1, supply with electric welder transformer B primary coil power supply.The power supply one tunnel 1 of electric welder transformer secondary coil output directly outputs to the welder power output, and another road is input to voltage detecting circuit 2, and through diode D1, D2, D3, D4 rectification, capacitor C 2 filtering become DC voltage stably.This DC voltage gives capacitor C 3 chargings by resistance R 2, and capacitor C 3 is supplied with triode Q1 base voltage, when the voltage at capacitor C 3 two ends is charged to certain voltage value, triode Q1 saturation conduction, triode Q2 is saturation conduction also, and relay K A obtains enough operating voltages and begins action, normally-closed contact KA
2Disconnect the contactor KM voltage normally opened contact KM that loses the job
1Disconnect, the input power supply of electric welding machine is input to the primary coil of electric welder transformer B by decompression capacitor C1, the input voltage of transformer B primary coil descends significantly, the also corresponding decline of the voltage of transformer B secondary coil, the voltage that is input to voltage detecting circuit also reduces, but can also keep triode Q1, Q2 saturation conduction, the normally-closed contact KA of relay K A
2Remain open state, the electric welding machine of this moment just is in unloaded electricity-saving state.
During the electric welding machine welding, the just approximate short-circuit condition of the power output end of electric welding machine, the voltage that is input to voltage detecting circuit drops near 0V, capacitor C 2, C3 begin rapid discharge, C2 is by resistance R 1 discharge, C3 is leaded up to diode D5, resistance R 1 discharge, and another road is by emitter stage, relay K A and resistance R 3 discharges of triode Q1, Q2.The voltage at capacitor C 3 two ends is dropped rapidly near 0V, and triode Q1, Q2 are also become by the saturation conduction state rapidly and carry to end state, the relay K A voltage normally-closed contact KA that loses the job
2Closure, contactor KM obtains the closed KM of operating voltage normally opened contact
1, the primary coil of electric welder transformer B recovers the full voltage power supply, and secondary coil output normal power source is to the welder power output, and electric welding machine begins normal welding job.
When electric welding machine stops welding, the voltage that is input to voltage detecting circuit begins to rise, capacitor C 3 is by resistance R 2 chargings, the voltage at two ends also begins slowly to rise, and the voltage at C3 two ends reaches and can make Q1, Q2 saturation conduction, relay K A action need the regular hour, about about 10 seconds, if electric welding machine continues welding again during this period, capacitor C 3 will be discharged again, and relay K A keeps being failure to actuate, and electric welding machine also continues normal welding.As the time during this period electric welding machine do not weld, the voltage at capacitor C 3 two ends will reach the magnitude of voltage that can make triode Q1, Q2 saturation conduction, Q1, Q2 begin saturation conduction, relay K A obtain operating voltage begins the action, normally-closed contact KA
2Disconnect the contactor KM voltage normally opened contact KM that loses the job
1Disconnect, the primary coil of electric welder transformer transfers the step-down power supply to, and electric welding machine enters unloaded electricity-saving state again.
Claims (2)
1. an electric welding machine energy-saving circuit comprises transformer B, inserts the power safety RD at transformer B primary coil two ends and the normally opened contact KM of contactor KM
1, be connected to the contactor KM at primary coil two ends and the normally-closed contact KA of relay K A
2, it is characterized in that the normally opened contact KM of contactor KM
1And be connected to capacitor C 1, transformer B secondary coil two ends are connected with by D1, D2, D3, the rectification circuit D that D4 forms, filter capacitor C2, resistance R 1 is attempted by the output of rectification circuit D, the base stage of triode Q1 is connected the output of rectification circuit D by diode D5, colelctor electrode is connected the output of rectification circuit D, emitter stage is connected with the base stage of triode Q2, the colelctor electrode of triode Q2 is connected the output of rectification circuit D, the emitter stage of triode Q2 by and the relay K A that connects be connected with the resistance R 3 that is connected rectification circuit D output with diode D6, capacitor C 3 is attempted by triode Q1 base stage and rectification circuit D output, and resistance R 2 is connected the base stage of triode Q1 and the output of rectification circuit D.
2. electric welding machine energy-saving circuit according to claim 1 is characterized in that being connected with power switch DK at the input of circuit power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177919 CN203197442U (en) | 2013-04-11 | 2013-04-11 | Energy-saving circuit of electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320177919 CN203197442U (en) | 2013-04-11 | 2013-04-11 | Energy-saving circuit of electric welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203197442U true CN203197442U (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320177919 Expired - Fee Related CN203197442U (en) | 2013-04-11 | 2013-04-11 | Energy-saving circuit of electric welding machine |
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| Country | Link |
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| CN (1) | CN203197442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182587A (en) * | 2013-04-11 | 2013-07-03 | 卫斌鹏 | No-load automatic stop power-saving circuit of electric welding machine |
-
2013
- 2013-04-11 CN CN 201320177919 patent/CN203197442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103182587A (en) * | 2013-04-11 | 2013-07-03 | 卫斌鹏 | No-load automatic stop power-saving circuit of electric welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: WEI BINPENG Effective date: 20131212 Owner name: WEI BINPENG JINCHENG POWER SUPPLY COMPANY, STATE G Effective date: 20131212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 048100 JINCHENG, SHAANXI PROVINCE TO: 100031 DONGCHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131212 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Wei Binpeng Patentee after: Jincheng Power Supply Company, State Grid Shanxi Electric Power Company Address before: 048100, Shanxi City, Jincheng province Yangcheng County town run Village Patentee before: Wei Binpeng |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20180411 |