CN111889850A - Power supply control system of alternating current welding machine - Google Patents
Power supply control system of alternating current welding machine Download PDFInfo
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- CN111889850A CN111889850A CN202010759641.0A CN202010759641A CN111889850A CN 111889850 A CN111889850 A CN 111889850A CN 202010759641 A CN202010759641 A CN 202010759641A CN 111889850 A CN111889850 A CN 111889850A
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- welding machine
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- electric welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
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- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
Abstract
Disclosed is a power control system of an alternating current electric welder, comprising: the detection unit comprises an under-current relay KA for detecting the primary current of the electric welding machine; and a control loop, including stop button SB1, start button SB2, time relay KT, contactor KM and wireless remote controller, stop button SB1 establishes ties on control loop's trunk circuit, start button SB2, time relay KT's normally closed contact, contactor KM's coil establishes ties and is regarded as control loop's first branch road, contactor KM's main contact establishes ties on electric welding machine's main loop, wireless remote controller's receiver, under current relay KA's contact and time relay KT's coil establish ties and is regarded as control loop's second branch road, first branch road is parallelly connected with the second branch road, contactor KM's auto-lock contact is parallelly connected with start button SB2 and wireless remote controller's receiver. The system can automatically stop the electric welding machine which is not used for a long time, and the electric welding machine in the stop state can be awakened through the wireless remote controller.
Description
Technical Field
At least one embodiment of the present disclosure is directed to an ac welder power control system.
Background
In engineering construction, the electric welding machines are one of the most common devices, and even hundreds of electric welding machines work simultaneously in some large steel structure projects. The electric welder utilizes the high-temperature electric arc generated by the instantaneous short circuit of the positive and negative poles to melt the welding flux and the welded material on the welding rod, thus achieving the purpose of welding. The instantaneous short circuit current generated by the electric welding machine is large, and the electric welding machine is a large power consumer in a construction site. A single electric welding machine is large in size and weight and inconvenient to move, most electric welding machines are arranged beside a temporary power distribution box in a centralized mode, and electricity is obtained in the temporary power distribution box in the centralized mode. The intermittent welding is the biggest characteristic of the electric welding machine in use, and when meeting the situations that a welder carries out welding at a high place, or has a rest on the way of welding, or waits for the completion of the previous process and the like, the welder is inconvenient to close, so that the electric welding machine is in no-load condition for a long time, and the electric quantity is wasted.
Disclosure of Invention
At least one embodiment of the present disclosure provides an ac welding machine power control system, which can automatically stop an electric welding machine that is not used for a long time, and the electric welding machine in a stop state can be wakened up by a wireless remote controller, thereby avoiding the problem of electric power waste caused by the long-time no-load of the electric welding machine, reducing the engineering cost, and improving the engineering benefit.
At least one embodiment of the present disclosure provides a power control system of a welding machine, including:
the detection unit comprises an under-current relay KA for detecting the primary current of the electric welding machine; and
control circuit, including stop button SB1, start button SB2, time relay KT, contactor KM and wireless remote control, stop button SB1 is established ties on control circuit's trunk circuit, start button SB2 time relay KT's normally closed contact the coil of contactor KM establishes ties and is regarded as control circuit's first branch road, contactor KM's main contact establishes ties on the main circuit of electric welding, wireless remote control's receiver the contact of undercurrent relay KA with time relay KT's coil establishes ties and is regarded as control circuit's second branch road, first branch road with the second branch road is parallelly connected, contactor KM's auto-lock contact with start button SB2 with wireless remote control's receiver is parallelly connected.
In some examples, the under current relay KA takes power from the main loop of the electric welding machine through a current transformer TA.
In some examples, the working lamp contact of the contactor KM and the indicator lamp HG indicating the working state of the welder are connected in series as a third branch of the control loop, and the first branch is connected in parallel with the third branch.
In some examples, a circuit breaker QF1 is connected in series on the main circuit of the welder.
In some examples, a breaker QF2 is connected in series with a main line of the control loop.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly described below.
Fig. 1 is a circuit diagram of a power control system of an ac welding machine according to an embodiment of the present disclosure.
Detailed Description
The power supply control system of the alternating current welding machine comprises a detection unit and a control loop. The detection unit is used for detecting the primary current of the electric welding machine, and the control loop is used for controlling the on-off of the main loop of the alternating current electric welding machine. When the detection unit continuously detects that the primary current of the electric welding machine is the no-load current within a set time, the control circuit cuts off the main circuit of the alternating current electric welding machine, so that the electric welding machine which is not used for a long time is automatically stopped, and in addition, the electric welding machine in the stopped state can be awakened through a wireless remote controller.
Fig. 1 is a circuit diagram of a power control system of an ac welding machine according to an embodiment of the present disclosure. As shown in fig. 1, the detection unit detects the primary current of the electric welding machine by using an under-current relay (inverse time-limited current relay) KA, and the under-current relay KA takes electricity from the main loop of the electric welding machine through a current transformer TA. The control loop comprises a stop button SB1, a start button SB2, a time relay KT, a contactor KM and a wireless remote controller. The stop button SB1 is connected in series on the main line of the control loop. The starting button SB2, the normally closed contact of the time relay KT and the coil of the contactor KM are connected in series to be used as a first branch of the control loop. And the main contact of the contactor KM is connected in series on the main loop of the electric welding machine. The receiver of wireless remote controller, the contact of undercurrent relay KA and time relay KT's coil is established ties and is regarded as control circuit's second branch road, first branch road with the second branch road is parallelly connected. The self-locking contact (auxiliary contact) of the contactor KM is connected in parallel with the start button SB2 and the receiver of the wireless remote control.
In addition, a working lamp contact (auxiliary contact) of the contactor KM and an indicator lamp HG for indicating the working state of the welding machine are connected in series as a third branch of the control loop, and the first branch and the third branch are connected in parallel.
In addition, a circuit breaker QF1 is connected in series on the main circuit of the electric welding machine, a circuit breaker QF2 is connected in series on the main circuit of the control circuit, and a power indicator light HR is further arranged on the control circuit.
The electric welding machine using method with the power supply control system of the alternating current electric welding machine comprises the following steps:
step 1, switching on the circuit breaker QF1 in the main circuit and the circuit breaker QF2 in the control circuit, wherein the indication lamp HR is on to indicate that the circuit breakers QF1 and QF2 are in a closing state.
Step 2, press start button SB2, the electric current passes through time relay normally closed contact KT, contactor KM the coil gets electric, simultaneously contactor KM the actuation of auto-lock contact, contactor KM coil self-holding, contactor KM main contact actuation makes the electric welding get electric, simultaneously contactor KM the actuation of work light contact, the pilot lamp shines HG, and the electric welding is in idle load standby state this moment, can weld the operation.
Step 3, when current transformer TA detected electric welding primary current and was no-load current, undercurrent relay KA the contact actuation, when the idle load stand-by time surpassed time when time relay KT's the setting time length, time relay KT the coil got the electricity, time relay KT the disconnection of normally closed contact, contactor KM the coil loses electricity, contactor KM main contact disconnection, the electric welding is shut down this moment the contactor KM the work light contact disconnection, pilot lamp HG goes out.
Step 4, when welding operation needs to be carried out again, press the start button of the transmitter of the wireless remote controller, the wireless remote controller the receiver is switched on, contactor KM the coil gets the electricity, simultaneously contactor KM the actuation of auto-lock contact, contactor KM coil self-holding, contactor KM the main contact actuation makes the electric welding get the electricity, simultaneously contactor KM the actuation of work light contact makes the pilot lamp HG is bright, and the electric welding is in idle load standby state this moment, can carry out welding operation.
Step 5, when the welding machine is not used any more when the welding operation is finished, the stop button SB1 is pressed, the contactor KM is powered off when the coil is powered off, the electric welding machine is powered off, the control loop is disconnected, the circuit breaker QF2 and the main loop are connected with the circuit breaker QF1, and the indicator light HR is turned off.
The power supply control system of the alternating current welding machine can automatically stop the welding machine which is not used for a long time, and the welding machine in a stop state can be awakened through the wireless remote controller, so that the problem of electric power waste caused by long-time no-load of the welding machine is avoided, the engineering cost can be reduced, and the engineering benefit is improved.
Claims (5)
1. A power control system of an electric welding machine is characterized by comprising:
the detection unit comprises an under-current relay KA for detecting the primary current of the electric welding machine; and
control circuit, including stop button SB1, start button SB2, time relay KT, contactor KM and wireless remote control, stop button SB1 is established ties on control circuit's trunk circuit, start button SB2 time relay KT's normally closed contact the coil of contactor KM establishes ties and is regarded as control circuit's first branch road, contactor KM's main contact establishes ties on the main circuit of electric welding, wireless remote control's receiver the contact of undercurrent relay KA with time relay KT's coil establishes ties and is regarded as control circuit's second branch road, first branch road with the second branch road is parallelly connected, contactor KM's auto-lock contact with start button SB2 with wireless remote control's receiver is parallelly connected.
2. The power control system of an electric welder according to claim 1, characterized in that the under current relay KA takes electricity from the main circuit of the electric welder through a current transformer TA.
3. The power control system of a welding machine as claimed in claim 1, wherein the work light contact of the contactor KM and an indicator light HG for indicating the working state of the welding machine are connected in series as a third branch of the control loop, and the first branch is connected in parallel with the third branch.
4. The power control system of a welder of claim 1, characterized in that a circuit breaker QF1 is connected in series with the main circuit of the welder.
5. A control system as claimed in claim 1, wherein a circuit breaker QF2 is connected in series with the main line of the control loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759641.0A CN111889850A (en) | 2020-07-31 | 2020-07-31 | Power supply control system of alternating current welding machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010759641.0A CN111889850A (en) | 2020-07-31 | 2020-07-31 | Power supply control system of alternating current welding machine |
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| CN111889850A true CN111889850A (en) | 2020-11-06 |
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| CN202010759641.0A Pending CN111889850A (en) | 2020-07-31 | 2020-07-31 | Power supply control system of alternating current welding machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843479A (en) * | 2021-10-14 | 2021-12-28 | 中国船舶重工集团公司第七一六研究所 | Energy-saving method and system for welding power supply |
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| JPS60213358A (en) * | 1984-04-06 | 1985-10-25 | Minoru Yoshikawa | Interrupter for no-load current or the like of welding machine |
| CN2083529U (en) * | 1990-01-25 | 1991-08-28 | 朱锦富 | No-load safety power saving switch of electric arc welder |
| CN201342541Y (en) * | 2009-02-18 | 2009-11-11 | 莱州三力汽车配件有限公司 | Energy-saving control device of electric welding machine |
| CN203900706U (en) * | 2014-01-22 | 2014-10-29 | 金牛股份有限公司 | Automatic poweroff energy-saving device for alternating current-direct current general electric welding machine |
| CN104476031A (en) * | 2014-11-28 | 2015-04-01 | 柳州市富城机械有限责任公司 | No-load energy-saving method of three-phase DC electric welding machine |
| CN205218268U (en) * | 2015-12-08 | 2016-05-11 | 山西冠力法兰有限公司 | No -load economizer for electric welding machine |
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2020
- 2020-07-31 CN CN202010759641.0A patent/CN111889850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60213358A (en) * | 1984-04-06 | 1985-10-25 | Minoru Yoshikawa | Interrupter for no-load current or the like of welding machine |
| CN2083529U (en) * | 1990-01-25 | 1991-08-28 | 朱锦富 | No-load safety power saving switch of electric arc welder |
| CN201342541Y (en) * | 2009-02-18 | 2009-11-11 | 莱州三力汽车配件有限公司 | Energy-saving control device of electric welding machine |
| CN203900706U (en) * | 2014-01-22 | 2014-10-29 | 金牛股份有限公司 | Automatic poweroff energy-saving device for alternating current-direct current general electric welding machine |
| CN104476031A (en) * | 2014-11-28 | 2015-04-01 | 柳州市富城机械有限责任公司 | No-load energy-saving method of three-phase DC electric welding machine |
| CN205218268U (en) * | 2015-12-08 | 2016-05-11 | 山西冠力法兰有限公司 | No -load economizer for electric welding machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113843479A (en) * | 2021-10-14 | 2021-12-28 | 中国船舶重工集团公司第七一六研究所 | Energy-saving method and system for welding power supply |
| CN113843479B (en) * | 2021-10-14 | 2023-09-26 | 中国船舶集团有限公司第七一六研究所 | Welding power supply energy saving method and system |
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Application publication date: 20201106 |