CN2268596Y - Anti-electric shocking device of energy saving arc welding transformer as separate power supply - Google Patents
Anti-electric shocking device of energy saving arc welding transformer as separate power supply Download PDFInfo
- Publication number
- CN2268596Y CN2268596Y CN 96249301 CN96249301U CN2268596Y CN 2268596 Y CN2268596 Y CN 2268596Y CN 96249301 CN96249301 CN 96249301 CN 96249301 U CN96249301 U CN 96249301U CN 2268596 Y CN2268596 Y CN 2268596Y
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- CN
- China
- Prior art keywords
- output
- transformer
- arc welding
- circuit
- 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 - Fee Related
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- Arc Welding Control (AREA)
Abstract
The utility model relates to an anti-electric shocking device of energy saving arc welding transformer as a separate power supply, which is characterized in that a choke coil L and a capacitor pressure reducing circuit are connected in series with one side of a primary coil of an arc welding transformer B1; both ends of the primary coil B1 are connected with a sampling transformer B2; a signal of the sampling transformer B2 can control the work of an alternating current contactor C through a voltage comparator circuit; a current mutual inductor B4 is arranged on a main loop of the primary pole of the arc welding transformer; when the current mutual inductor does not have welding current after triggering condition, the delaying switching off of the alternating current contactor can be carried out. The utility model has the advantages of remote control, high sensitivity and energy saving.
Description
The utility model relates to a kind of safeguard protection and energy saver of arc welding transformer.
Traditional AC and DC arc-welding machine, mash welder, arc cutting machine, when being interrupted welding job normally, be to be in "on" position always, particularly to the comparatively general hand ac arc welding machine of present use, electric current is quite big when zero load, and general welding machine is in ten to tens amperages, and its transformer secondary floating voltage is also quite high, generally in 60~85 volts of I frequency voltage ranges, human body is directly constituted Danger Electric shock risk.
The purpose of this utility model is to provide a kind of energy-conservation, safety and can starts to control at a distance and the highly sensitive energy-saving arc welding transformer anti-electric shock apparatus that can be used as the independent current source power supply.
The key that the purpose of this utility model realizes is:
A kind of energy-saving arc welding transformer anti-electric shock apparatus that can be used as the independent current source power supply is characterized in that: at arc welding transformer B
1Primary coil one side is serially connected with choking coil L and capacity voltage dropping circuit; Described capacity voltage dropping circuit is by the capacitor C of one group of different capabilities
0, C
1, C
2, with divide each contact select device K compositions that be connected, according to the different model motor, the selection matching capacitance; The elementary arc welding transformer B that is directly parallel in that one sampling transformer B2 is arranged
1Elementary two ends, the voltmeter V of demonstration secondary safe voltage value
bAlso be connected on B
1Elementary two ends; The output of described sampling transformer is by rectifier Z
1, rectifying and wave-filtering, shaping circuit, voltage comparator circuit be connected with the control circuit of A.C. contactor C, when the short circuit of arc welding transformer secondary work, triggers the adhesive A.C. contactor, makes arc welding transformer be in state to be welded; At the elementary major loop of arc welding transformer current transformer B is set
4, described current transformer B
4Output by amplifying circuit IC
5Be connected with a delay circuit, this delay circuit behind above-mentioned triggering state to be welded, current transformer B
4During non-inductive voltage, time delayed turn-off A.C. contactor C.
Described voltage comparator circuit is by secondary voltage comparator IC
1, IC
2Form described IC
1Negative input end and the rectifier Z of described sampling transformer output
1Rectifying and wave-filtering, shaping circuit C
4, R
1, R
2Be connected IC
1Anode with adjust potentiometer W
1Armature contact be connected IC
1Output and IC
2Positive input terminal be connected IC
2Negative input end and another adjust potentiometer W
2Armature contact be connected IC
2Output and the relay J of described ac contactor control circuit
4The controllable silicon SCR that is connected in series on the branch road
3Trigger electrode and working indicating LED
1, LED
2Control relay J
3The controllable silicon SCR that is connected in series on the branch road
2Trigger electrode be connected; Described J
3Normally opened contact J
3K, normally-closed contact J
3BBe serially connected in LED respectively
1, LED
2On the branch road; Described J
4Normally opened contact J
4KBe serially connected on the power supply branch road of A.C. contactor C.
Described delay circuit is by amplifier IC
5, controllable silicon SCR
1, SCR
4Relay J
1, J
2, J
5Voltage comparator ic
3, IC
4With charge and discharge capacitance C
12Form; Described current transformer B
4Output and amplifier IC
5Input be connected; IC
5Output and controllable silicon SCR
1Trigger electrode be connected, at SCR
1On the branch road and be connected to relay J
1, J
2, J wherein
2Normally opened contact J
2KWith above-mentioned normally opened contact J4K and meet J
1Normally-closed contact J
1BBe serially connected in power supply ground and comparator IC with the auxiliary contact C of A.C. contactor C
3Negative input end between, IC
3Positive input termination positive source; IC
3Output is by potentiometer W
3With another voltage comparator ic
4Positive pole be connected IC
4Negative input end be connected IC with the armature contact of another potentiometer
4Positive input terminal and power supply ground between be connected to J respectively
2Normally opened contact J
2KWith charge and discharge capacitance C
12, IC
4Output and controllable silicon SCR
4Trigger electrode be connected relay J
5With SCR
4Be serially connected in both ends of power, J
5Normally-closed contact J
5BWith J
4Another normally opened contact J
4KBe serially connected in positive source and above-mentioned controllable silicon SCR
3Between the trigger electrode; After triggering state to be welded, not continuous welding, current transformer B
4Non-inductive voltage output, SCR
1Do not work J
1B is failure to actuate, the auxiliary contact C adhesive of A.C. contactor C, IC
3The output high potential, charge and discharge capacitance C
12Charging, when setting value, IC
4Output Gao Ping, J
5Work makes J
4KLatching circuit in J
5BDischarge, the A.C. contactor dead electricity is got back to the triggering state for the treatment of.
The utlity model has following advantage:
1. do not need to follow electric welding machine together, it can be used as one independently supply unit send electricity to give required control appliance, realized remote stating control condition;
2. trigger sensitivity height;
3. secondary voltage is when being interrupted welding job, and is adjustable between 10-36V, therefore has the electrocution-proof protection function; And be applicable to the electric welding machine of various different capacities.
4. energy-conservation, owing to the effect of dividing potential drop electric capacity, its unloaded power consumption is at 300-500mA when unloaded.
The drawing explanation:
Accompanying drawing is an embodiment circuit diagram of the present utility model.
The utility model operation principle is as follows:
At arc welding transformer B
1Primary coil one side serial connection capacitor C
0Or C
1, C
2, C
3Form capacity voltage dropping circuit, since inconsistent to various different arc welding transformer primary coil reaction impedances, therefore select device K and select the capacitor of different capabilities to mate in the safe voltage control range of needs by branch, sampling transformer B is arranged then
2The elementary arc welding transformer B that is directly parallel in
1Elementary two ends also are created in sampling transformer B simultaneously by the voltage behind the capacitance decompression
2Two ends, and by voltmeter V
bShow secondary safe voltage value.
Sampling transformer B
2The AC signal of output is by rectifier Z
1And C
4, R
1, R
2Rectifying and wave-filtering has been added to voltage comparator circuit IC after the shaping
1Negative terminal, adjust potentiometer W
1Make voltage comparator circuit IC
1Positive terminal voltage makes it be output as low level, like this IC circuit a little less than negative terminal
2Be all low level equally, so pass through resistance R
6The controllable silicon SCR of control
2And R
7, D
3The controllable silicon SCR of control
3Triggering and conducting relay J not
3, J
4Also not adhesive, its contact J
4K
1, J
4K
2Often open, the A.C. contactor of main circuit is because of not adhesive of dead electricity, normally opened contact J
3KWith normally-closed contact J
3BBe failure to actuate green LED
1Not luminous Red LED1 LED
2Indication ruddiness, entire circuit is in the triggering state for the treatment of like this.
As arc welding transformer B
1Secondary output work transcient short circuit time is reacted to transformer B
1The primary coil both end voltage also descends immediately, therefore at voltage comparator circuit IC
1Under the constant situation of anode input voltage,, make voltage comparator circuit IC along with the decline of sampling voltage
1Negative terminal voltage makes IC circuit far below positive terminal voltage
1, IC
2The output high level triggers controllable silicon SCR
2, SCR
3Conducting, controlled relay J
3, J
4Adhesive, normally opened contact J
4K
1, J
4K
2Closure, A.C. contactor C gets electric back adhesive, makes to be connected in parallel on capacitor C
0On contactor C main contact CK
1, CK
2, CK
3Closure, the elementary rated operational voltage that obtained of arc welding transformer like this.The positive potential of a end passes through resistance R at the same time
15Normally opened contact J
4K
2With normally-closed contact J
5BBe added in controllable silicon SCR again
3On, latching circuit is finished the work, and arc-welding machine is in state to be welded.
If arc-welding machine does not continue welding, arc welding transformer B after triggering state to be welded
1Primary coil loops is provided with operating current, therefore is arranged on the current transformer B on the arc welding transformer primary return
4Output is provided with induced voltage, IC
5Output low level, controllable silicon SCR
1Not conducting, normally-closed contact J
1B, normally opened contact J
2K
1, J
2K
2, J
1K is failure to actuate, because the adhesive of A.C. contactor C, its auxiliary normally opened contact C is the closure and the normally-closed contact J that connects also
1B is short circuit over the ground, makes and originally sets voltage comparator circuit IC
3The high status of negative terminal is zero, and the output high level is then by delay selection potentiometer W
3To capacitor C
12Charging, booster tension comparison circuit IC simultaneously
4The current potential of anode is when its current potential is raised to negative terminal current potential than former setting when slightly high, IC circuit
4The output high level passes through resistance R then
14Trigger controllable silicon SCR
4Conducting, relay J
5Adhesive makes the normally-closed contact J in the latching circuit
5BDischarge relay J
4Normally opened contact J
4K
1, J
4K
2Also discharge simultaneously, reset after the A.C. contactor dead electricity like this, circuit has been come back to treat the triggering state.
Repeat, trigger state to be welded as arc-welding machine after, the situation that continues welding is just in time opposite; IC
5The output high level triggers controllable silicon SCR
1Conducting, relay J
1, J
2Adhesive, normally opened contact J
1KClosure is made status indicator lamp LED
3Luminous, normally-closed contact J
1BDischarge, even therefore A.C. contactor auxiliary contact C closure makes voltage comparator circuit IC
3The negative terminal current potential can not be zero, and no high level output is not also to capacitor C
12Charging is again because normally opened contact J
2K
2Closed one is to prepare from zero timing for next one time-delay, the 2nd, make voltage comparator circuit IC
4Anode is a zero potential, output low level, controllable silicon SCR
4Not conducting, relay J
5Normally-closed contact J
5BBe failure to actuate, make the positive potential of a end pass through resistance R
15Contact J
4K
2, J
5B continues to be added in controllable silicon SCR
3On, make relay J
4Normally opened contact J
4K
1, J
4K
2Locate closure state always.
Claims (3)
1, a kind of energy-saving arc welding transformer anti-electric shock apparatus that can be used as the independent current source power supply is characterized in that: at arc welding transformer B
1Primary coil one side is serially connected with choking coil L and capacity voltage dropping circuit; Described capacity voltage dropping circuit is by the capacitor C of one group of different capabilities
0, C
1, C
2, with divide each contact select device K compositions that be connected, according to the different model motor, the selection matching capacitance; One sampling transformer B is arranged
2The elementary arc welding transformer B that is directly parallel in
1Elementary two ends, the voltmeter V of demonstration secondary safe voltage value
bAlso be connected on B
1Elementary two ends; The output of described sampling transformer is by rectifier Z
1, rectifying and wave-filtering, shaping circuit, voltage comparator circuit be connected with the control circuit of A.C. contactor C, when the short circuit of arc welding transformer secondary work, triggers the adhesive A.C. contactor, makes arc welding transformer be in state to be welded; At the elementary major loop of arc welding transformer current transformer B is set
4, described current transformer B
4Output by amplifying circuit IC
5Be connected with a delay circuit, this delay circuit behind above-mentioned triggering state to be welded, current transformer B
4During non-inductive voltage, time delayed turn-off A.C. contactor C.
2, a kind of energy-saving arc welding transformer anti-electric shock apparatus that can be used as the independent current source power supply as claimed in claim 1, it is characterized in that: described voltage comparator circuit is by secondary voltage comparator IC
1, IC
2Form described IC
1Negative input end and the rectifier Z of described sampling transformer output
1Rectifying and wave-filtering, shaping circuit C
4, R
1, R
2Be connected IC
1Anode with adjust potentiometer W
1Armature contact be connected IC
1Output and IC
2Positive input terminal be connected IC
2Negative input end and another adjust potentiometer W
2Armature contact be connected IC
2Output and the relay J of described ac contactor control circuit
4The controllable silicon SCR that is connected in series on the branch road
3Trigger electrode and working indicating LED
1, LED
2Control relay J
3The controllable silicon SCR that is connected in series on the branch road
2Trigger electrode be connected; Described J
3Normally opened contact J
3K, normally-closed contact J
3BBe serially connected in LED respectively
1, LED
2On the branch road; Described J
4Normally opened contact J
4KBe serially connected on the power supply branch road of A.C. contactor C.
3, a kind of energy-saving arc welding transformer anti-electric shock apparatus that can be used as the independent current source power supply as claimed in claim 1, it is characterized in that: described delay circuit is by controllable silicon SCR
1, SCR
4Relay J
1, J
2, J
5Voltage comparator ic
3, IC
4With charge and discharge capacitance C
12Form; Described current transformer B
4Output and amplifier IC
5Input be connected; IC
5Output and controllable silicon SCR
1Trigger electrode be connected, at SCR
1On the branch road and be connected to relay J
1, J
2, J wherein
2Normally opened contact J
2KWith above-mentioned normally opened contact J
4KAnd meet J
1Normally-closed contact J
1BBe serially connected in power supply ground and comparator IC with the contact C of A.C. contactor C
3Negative input end between, IC
3Positive input termination positive source; IC
3Output is by potentiometer W
3With another voltage comparator ic
4Positive pole be connected IC
4Negative input end be connected IC with the armature contact of another potentiometer
4Positive input terminal and power supply ground between be connected to J respectively
2Normally opened contact J
2KWith charge and discharge capacitance C
12, IC
4Output and controllable silicon SCR
4Trigger electrode be connected relay J
5With SCR
4Be serially connected in both ends of power, J
5Normally-closed contact J
5BWith J
4Another normally opened contact J
4KBe serially connected in positive source and above-mentioned controllable silicon SCR
3Between the trigger electrode; After triggering state to be welded, not continuous welding, current transformer B
4Non-inductive voltage output, SCR
1Do not work J
1B is failure to actuate, the contact C adhesive of A.C. contactor C, IC
3The output high potential, charge and discharge capacitance C
12Charging, when setting value, IC
4Output Gao Ping, J
5Work makes J
4KLatching circuit in J
5BDischarge, the A.C. contactor dead electricity is got back to the triggering state for the treatment of.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96249301 CN2268596Y (en) | 1996-12-17 | 1996-12-17 | Anti-electric shocking device of energy saving arc welding transformer as separate power supply |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 96249301 CN2268596Y (en) | 1996-12-17 | 1996-12-17 | Anti-electric shocking device of energy saving arc welding transformer as separate power supply |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2268596Y true CN2268596Y (en) | 1997-11-26 |
Family
ID=33920928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 96249301 Expired - Fee Related CN2268596Y (en) | 1996-12-17 | 1996-12-17 | Anti-electric shocking device of energy saving arc welding transformer as separate power supply |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2268596Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104084671A (en) * | 2014-07-29 | 2014-10-08 | 开滦能源化工股份有限公司吕家坨矿业分公司 | Electric shock preventing device of alternating current arc welding machine |
CN110337167A (en) * | 2019-07-03 | 2019-10-15 | 昆山书豪仪器科技有限公司 | A kind of arc discharge light source |
-
1996
- 1996-12-17 CN CN 96249301 patent/CN2268596Y/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104084671A (en) * | 2014-07-29 | 2014-10-08 | 开滦能源化工股份有限公司吕家坨矿业分公司 | Electric shock preventing device of alternating current arc welding machine |
CN104084671B (en) * | 2014-07-29 | 2016-05-11 | 开滦能源化工股份有限公司吕家坨矿业分公司 | Anti-shock device for ac arc welder |
CN110337167A (en) * | 2019-07-03 | 2019-10-15 | 昆山书豪仪器科技有限公司 | A kind of arc discharge light source |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |