CN1010565B - No-load electricity-saving device for ac arc welder - Google Patents
No-load electricity-saving device for ac arc welderInfo
- Publication number
- CN1010565B CN1010565B CN 88100985 CN88100985A CN1010565B CN 1010565 B CN1010565 B CN 1010565B CN 88100985 CN88100985 CN 88100985 CN 88100985 A CN88100985 A CN 88100985A CN 1010565 B CN1010565 B CN 1010565B
- Authority
- CN
- China
- Prior art keywords
- transformer
- arc welding
- resistance
- coil
- electromagnetic contactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000003466 welding Methods 0.000 claims abstract description 33
- 239000004065 semiconductor Substances 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 15
- 230000003068 static effect Effects 0.000 claims description 12
- 238000005476 soldering Methods 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 230000000903 blocking effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 229920001342 Bakelite® Polymers 0.000 description 1
- 241000272470 Circus Species 0.000 description 1
- ASMQPJTXPYCZBL-UHFFFAOYSA-N [O-2].[Cd+2].[Ag+] Chemical compound [O-2].[Cd+2].[Ag+] ASMQPJTXPYCZBL-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Landscapes
- Arc Welding Control (AREA)
Abstract
The no-load electricity-saving device for AC arc welder is composed of current-limiting transformer, two rectifying circuits, RC-type semiconductor time-dimension electric appliance, current transformer, blocking circuit and electromagnetic contactor. And the electric welding machine can move conveniently.
Description
The present invention relates to the auxiliary equipment of arc welder, relate in particular to a kind of non-loaded energy-saving device of AC arc welding machine.
Adopt a class electric welding machine of arc welding transformer, the secondary floating voltage that is in operation is higher than the safe voltage value, and the direct again contact electrification part of operating personnel is very dangerous, and the duty-cycle factor of electric welding machine is extremely low, unloaded power consumption is big, power factor is low, existing multiple electric welder no-load power saving scheme, mostly structure more complicated, installation and maintenance inconvenience, also there is the stable inadequately defective of performance in some.
The object of the present invention is to provide a kind of not only safety but also electricity saving function comprehensive technological scheme is arranged.Adopt device of the present invention, can after appearring in electric welding machine, unloaded dangerous voltage automatically secondary voltage be dropped to below the safe voltage in the several seconds, and reduce the no-load current of electric welding machine greatly, and reduce unloaded power consumption, realize safety, the economical operation of electric welding machine.
The present invention comes down to a kind of automaton.It is by current-limiting transformer BX, rectification circuit 1,2, and resistance-capacitance type semiconductor time relay sj, current transformer HL, exclusive circuit 4 and electromagnetic contactor CJ form.All parts comprise that current transformer HL is assembled in the ac arc wedling machine, with arc welding transformer BH, the supporting use of soldering turret HQ.
Being constructed as follows in detail of technical solution of the present invention:
Be serially connected with the normally closed interlock group CJ of the custom-designed electromagnetic contactor CJ of the present invention at the primary return of arc welding transformer BH
-1The primary winding of summation current transformer HL, and the secondary loop also is connected with the rectification circuit 1,2 of two parallel connections except that cross-over connection soldering turret HQ.
Adopting current-limiting transformer BX as the current-limiting components of arc welding transformer BH primary return and utilize its secondary loop that two groups of DC control supplies are provided, is one of principal character of the present invention.The normally closed interlock group CJ of the primary coil of current-limiting transformer BX and electromagnetic contactor CJ
-1Parallel connection, secondary coil have two groups, at the normally closed interlock group CJ of electromagnetic contactor CJ
-1During disconnection, two groups of secondary coils are respectively through diode D
1, capacitor C
1With diode D
2, capacitor C
2The half-wave rectifying circuit output dc voltage U that forms
Ab, U
CdOutput dc voltage U
AbTwo outputs of half-wave rectifying circuit between be connected with the normally opened contact J of electromagnetic contactor CJ coil and sensitive relay J
-1The branch road of serial connection, this branch road also is connected across the output of rectification circuit 1, output dc voltage U simultaneously
CdTwo outputs of half-wave rectifying circuit connect the dc supply positive and negative terminal of resistance-capacitance type semiconductor time relay sj respectively.Two outputs of rectification circuit 2 connect resistance-capacitance type semiconductor time relay sj respectively by resistance R, delay capacitor C
3The time-delay branch road two ends of series connection.The output dc voltage of rectification circuit 2 is the dc supply of resistance-capacitance type semiconductor time relay sj, it is again its control signal source, when electric welding machine changed duty, the dc supply of resistance-capacitance type semiconductor time relay sj was by another output dc voltage U of current-limiting transformer BX
CdProvide.And the control signal source is constant.Resistance-capacitance type semiconductor time relay sj comprises by resistance R, delay capacitor C
3The time-delay branch road, comparator 3 of series connection and by protection diode D
4, sensitive relay J parallel connection three parts of executive module, it comes down to a delay switch circuit.Comparator 3 can adopt typical composite crystal transistor switching circuit.Current transformer HL is equipped with insulating sheath, places device inside, and its secondary coil parallel connection has exclusive circuit 4, and cross-over connection has the delay capacitor C of resistance-capacitance type semiconductor time relay sj between the output of exclusive circuit 4
3When the electric current that passes through in current transformer HL primary winding surpassed setting valve, exclusive circuit 4 was connected, and is delay capacitor C
3Discharge provides the loop rapidly, and resistance-capacitance type semiconductor time relay sj is not worked reliably.
Adopting custom-designed electromagnetic contactor CJ is another principal character of the present invention.Its element is by a pair of big capacity normally closed interlock group CJ that is made up of static contact 13, static contact bridge 10 and moving contact 12, moving contact bridge 11
-1, by coil rack 8, coil 9, U type fixed core 6, T type moving unshakable in one's determination (with unshakable in one's determination 7 and armature 16 to rivet is one) and insulating pad 15 electromagnetic system, retracting spring 14 and the base 5 formed.Coil 9 is controlled by dc source.Base 5 usefulness insulating materials are made the shape of falling π, and except that the static contact bridge 10 that curves the right angle was fixed on base 5 outsides, remaining part all was installed in the base 5, reinforces with securing member mutually.Unshakable in one's determination 7 make hollow cylindrical, and retracting spring 14 is equipped with in the hollow part, injects coil rack 8 central authorities in the lump, and unshakable in one's determination 7 top and pane armature 16 are riveted and is one, and it is moving unshakable in one's determination to constitute the T type, right with the dynamic and static iron core of U type fixed core 6 compositions.Fasten as one with moving contact bridge 11 through insulation backing plate 15 again above the armature 16, the moving contact 12 on moving contact bridge 11 tops place static contact bridge 10 bottoms static contact 13 under.Under the effect of retracting spring 14, dynamic and static contact 12, the 13 big capacity normally closed interlock group CJ that partners
-1, after coil 9 energisings, the moving iron core of T type overcomes the elastic force of retracting spring 14 to be inhaled to U type fixed core 6, drives moving contact 12 and separates with static contact 13, be i.e. normally closed interlock group CJ
-1Disconnect.
The course of work that the present invention and ac arc wedling machine are supporting when using is:
State to be welded: connect power switch K, arc welding transformer BH zero load is to be welded, the output dc voltage of rectification circuit 2 by resistance R to delay capacitor C
3Charging, through the time delay of adjusting, comparator 3 is connected, and sensitive relay J coil gets electric, its normally opened contact J
-1Closure, electromagnetic relay CJ coil from exporting of rectification circuit 1 electric, its normally closed interlock group CJ
-1Disconnect.
Safety electricity-saving state: normally closed interlock group CJ
-1After the disconnection, the primary coil of current-limiting transformer BX inserts the primary return of arc welding transformer BH, has reduced the electric welder no-load electric current, and simultaneously, the secondary voltage of arc welding transformer BH descends significantly.This moment, the control signal source of resistance-capacitance type semiconductor time relay sj still was the output of rectification circuit 2, but dc supply changes the secondary output dc voltage U by current-limiting transformer BX
CdAt U
CdOppositely insert isolating diode D between anode and the resistance
3, to prevent DC voltage U
CdEnter the time-delay branch road.
Duty: when soldering turret HQ contacted with workpiece, the secondary voltage of arc welding transformer BH reduced suddenly, and the control signal source of resistance-capacitance type semiconductor time relay sj disappears, sensitive relay J coil losing electricity, its normally opened contact J
-1Disconnect, electromagnetic relay CJ coil is dead electricity also, its normally closed interlock group CJ
-1Closed again, the arc welding transformer primary coil recovers full voltage, and the welding rod starting the arc enters duty.Welding current makes current transformer HL secondary coil induce the electric current that is higher than setting valve, and exclusive circuit 4 is connected, and then makes delay capacitor C
3Discharge rapidly, comparator 3 keeps off-state, guarantees that ac arc wedling machine is in reliable welding job state.
After welding stopped, arc welding transformer BH zero load changed the safety electricity-saving state again over to through time-delay.
The present invention is compared with the prior art, and except that the goal of the invention that can reach expection has tangible unloaded power savings, also has simple in structurely, and volume is small and exquisite, can put into easily in the electric welding machine, helps the characteristics of electric welding machine mobile operating.Adopt special electromagnetic contactor, the contact capacity is big, and coil is realized silent running by DC power supply, owing to be not to adopt three pairs of contact parallel connections.And only use a pair of big capacity normally closed interlock group, get rid of three pairs of contact actions and had asynchrony and the easy disadvantage of damaging.Even when control loop breaks down, do not influence the electric welding machine operate as normal yet.
The present invention has following accompanying drawing:
Fig. 1 is the non-loaded energy-saving device of AC arc welding machine overall block-diagram;
Fig. 2 is the structural representation of the custom-designed electromagnetic contactor CJ of the present invention.
Embodiment:
The current-limiting transformer BX:E sections heart, sectional area 18 * 28(millimeter), 0.23 millimeter * 1900T of first line level circle φ, two groups times line level circle is respectively 0.51 millimeter * 170T of φ, 0.51 millimeter * 150T of φ;
Rectification circuit 1:4 * 1N4007 diode is formed single phase bridge type rectifier circu;
Rectification circuit 2:1N4007 diode, 2CW114 Zener diode etc. are formed half-wave rectifying circuit;
Resistance R: 100K Ω fixed resistance is connected in series with 680K Ω variable resistor;
Delay capacitor C
3: 100MF/25V;
Diode D
1～D
4: the 1N4007 diode;
Capacitor C
1: 4.7MF/50V;
Capacitor C
2: 47MF/160V;
Sensitive relay J:JRX-13R/24V;
Comparator 3:3DG6D, 3DG12B composite pipe switch circuit;
Exclusive circuit 4:3DG12B transistor switching circuit;
Current transformer HL: ferrite toroidal magnetic core φ 31 * φ 20 * 7(millimeter), single-turn type, 0.19 millimeter * 300T of secondary coil φ;
Electromagnetic contactor CJ: dynamic and static contact 12,13 is the 100A silver cadmium oxide contact, and coil 9 is 0.19 millimeter * 3000T of φ, and U type fixed core 6, iron core 7 and armature 16 usefulness electrical pure irons are made, and base 5, coil rack 8 and insulating pad 15 usefulness bakelites are made.
Claims (3)
1, a kind of resistance-capacitance type semiconductor time relay sj, rectification circuit 1,2 of comprising, with arc welding transformer BH, the matching used non-loaded energy-saving device of AC arc welding machine of soldering turret HQ is characterized in that:
1.1 be serially connected with the normally closed interlock group CJ of electromagnetic contactor CJ at the primary return of arc welding transformer BH
-1The primary winding of summation current transformer HL, and the secondary loop also is connected with the rectification circuit 1,2 of two parallel connections except that cross-over connection soldering turret HQ;
1.2 as arc welding transformer BH primary return current-limiting components and utilize its secondary coil that the primary coil of current-limiting transformer BX of two groups of DC control supplies and the normally closed interlock group CJ of electromagnetic contactor CJ are provided
-1Parallel connection, its secondary coil have two groups, at the normally closed interlock group CJ of electromagnetic contactor CJ
-1During disconnection, two groups of secondary coils are respectively through diode D
1, capacitor C
1With diode D
2, capacitor C
2The half-wave rectifying circuit output dc voltage U that forms
Ab, U
Cd
1.3 output straight line voltage U
AbTwo outputs of half-wave rectifying circuit between be connected with the normally opened contact J of electromagnetic contactor CJ coil and sensitive relay J
-1The branch road of serial connection, this branch road also is connected across the output of rectification circuit 1, output dc voltage U simultaneously
CdTwo outputs of half-wave rectifying circuit connect the dc supply positive and negative terminal of resistance-capacitance type semiconductor time relay sj respectively;
1.4 two outputs of rectification circuit 2 connect resistance-capacitance type semiconductor time relay sj respectively by resistance R, delay capacitor C
3The time-delay branch road two ends of series connection;
1.5 the secondary coil parallel connection of current transformer HL has exclusive circuit 4, and cross-over connection has the delay capacitor C of resistance-capacitance type semiconductor time relay sj between the output of exclusive circuit 4
3
2, non-loaded energy-saving device of AC arc welding machine as claimed in claim 1, it is characterized in that electromagnetic contactor CJ by a pair of by a big capacity normally closed interlock group CJ who quietly penetrates 13, static contact bridge 10 and moving contact 12, moving contact bridge 11 are formed
-1Its base 5 usefulness insulating materials are made the shape of falling π, except that the stationary contact bridge 10 that curves the right angle is fixed on base 5 outsides, all electromagnetic system and retracting spring 14 all are installed in the base 5, reinforce with securing member mutually, unshakable in one's determination 7 make hollow cylindrical, retracting spring 14 is equipped with in the hollow part, inject coil rack 8 central authorities in the lump, unshakable in one's determination 7 top and 16 riveted joints of pane armature, it is moving unshakable in one's determination to constitute the T type, forms moving with U type fixed core 6, fixed core is right, fasten as one with moving contact bridge 11 through insulation backing plate 15 again above the armature 16, the moving contact 12 on moving contact bridge 11 tops place static contact bridge 10 bottoms static contact 13 under;
3, non-loaded energy-saving device of AC arc welding machine as claimed in claim 1 is characterized in that current transformer HL is equipped with insulating sheath and is installed in device inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100985 CN1010565B (en) | 1988-02-16 | 1988-02-16 | No-load electricity-saving device for ac arc welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88100985 CN1010565B (en) | 1988-02-16 | 1988-02-16 | No-load electricity-saving device for ac arc welder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88100985A CN88100985A (en) | 1988-08-24 |
| CN1010565B true CN1010565B (en) | 1990-11-28 |
Family
ID=4831590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88100985 Expired CN1010565B (en) | 1988-02-16 | 1988-02-16 | No-load electricity-saving device for ac arc welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1010565B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102896402B (en) * | 2011-07-29 | 2014-09-03 | 淮南矿业(集团)有限责任公司 | AC welder |
| CN104148779A (en) * | 2014-07-31 | 2014-11-19 | 佛山中用自动化装备有限公司 | Economizer and energy saving method applied to alternating-current arc welding machine |
| CN109047992A (en) * | 2018-09-20 | 2018-12-21 | 西安拓锋机电科技有限公司 | It efficiently cuts and carries economize on electricity control route |
-
1988
- 1988-02-16 CN CN 88100985 patent/CN1010565B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN88100985A (en) | 1988-08-24 |
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Legal Events
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |