CN205733366U - A kind of welding supply of low impact load - Google Patents
A kind of welding supply of low impact load Download PDFInfo
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- CN205733366U CN205733366U CN201620463216.6U CN201620463216U CN205733366U CN 205733366 U CN205733366 U CN 205733366U CN 201620463216 U CN201620463216 U CN 201620463216U CN 205733366 U CN205733366 U CN 205733366U
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Abstract
This utility model relates to the welding supply of a kind of low impact load, including rectified three-phase circuit module and welding output unit, described welding output unit includes that source of welding current output module, soldering set, striking auxiliary device, auxiliary welding equipment and IGCT I, described rectified three-phase circuit module are connected with three-phase alternating-current supply；This utility model makes soldering set obtain the higher striking voltage of direct current power source voltage than the output of rectified three-phase circuit module by striking auxiliary device, make soldering set weld capacitor when normal weld by auxiliary welding equipment can jointly export welding current with source of welding current output module, be substantially reduced the impact load of electrical network.
Description
Technical field
This utility model relates to a kind of arc-welding power supply device, the welding supply of a kind of low impact load.
Background technology
In the enterprises such as modern mechanical manufacturing industry especially automobile making, the various electric welding equipment such as press welder all uses a large amount of, this electric welding machine belongs to the load of single-phase large-scale impact more, feature in use is big electric current and intermittence, very big to the impact of electrical network and cause the imbalance of intermittent threephase load in short-term, the normal reliability not only affecting the various electrical equipments such as electromotor, transformator and motor runs, and even can cause the fault of the equipment such as automatic control system；Meanwhile, the welding current control IGCT of existing DC welding machine is because bearing high voltage, the impact of big electric current, it is easy to breakdown and cause electric welding machine fault, reduces the reliability of electric welding machine work and increases maintenance cost.
Utility model content
The technical problems to be solved in the utility model is: provide the welding supply of a kind of low impact load, can effectively reduce the impact to electrical network in welding process.
The technical scheme solving above-mentioned technical problem is: the welding supply of a kind of low impact load, including rectified three-phase circuit module and welding output unit, described welding output unit includes that source of welding current output module, soldering set, striking auxiliary device, auxiliary welding equipment and IGCT I, described rectified three-phase circuit module are connected with three-phase alternating-current supply；
Described source of welding current output module is connected with rectified three-phase circuit module, and this source of welding current output module is connected with soldering set, and access IGCT I of connecting between source of welding current output module and soldering set；
Described striking auxiliary device is made up of IGCT II, IGCT III, IGCT IV, IGCT V and Capacitor banks A, the DC source that the input of this striking auxiliary device is exported with rectified three-phase circuit module by IGCT II, IGCT III is connected, outfan is in parallel with IGCT I by IGCT IV, IGCT V, and the outfan of striking auxiliary device is connected in the loop between source of welding current output module and soldering set；
Described auxiliary welding equipment is made up of IGCT VI, IGCT VII, IGCT VIII and IGCT Ⅸ and Capacitor banks B, the DC source that the input of this auxiliary welding equipment is exported with rectified three-phase circuit module by IGCT VI, IGCT VII is connected, and outfan is connected with soldering set after source of welding current output module parallel connection by IGCT VIII and IGCT Ⅸ.
Above-described each IGCT is turn-off thyristor.
Further technical scheme of the present utility model is: the input of described source of welding current output module is connected with two outfans of rectified three-phase circuit module, two outfans of this source of welding current output module are connected with the input of soldering set, and access IGCT I of connecting between the outfan of one of them source of welding current output module and soldering set.
Described IGCT I negative electrode is connected with the cathode output end of source of welding current output module, and IGCT I anode is connected with the input of soldering set, and the pole that controls of each IGCT is connected with the outfan triggering circuit.
Described IGCT I anode is connected with the cathode output end of source of welding current output module, and IGCT I negative electrode is connected with the input of soldering set, and the pole that controls of each IGCT is connected with the outfan triggering circuit.
The anode of described IGCT II, the negative electrode positive and negative electrode with rectified three-phase circuit module outfan respectively of IGCT III are connected, the negative electrode of IGCT II, the anode positive and negative electrode with Capacitor banks A respectively of IGCT III are connected, described IGCT IV anode, IGCT V negative electrode positive and negative electrode with Capacitor banks A respectively is connected, IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the cathode output end of source of welding current output module, IGCT V anode is connected with the anode of IGCT I, and is connected with the input of soldering set.
The anode of described IGCT II, the negative electrode positive and negative electrode with rectified three-phase circuit module outfan respectively of IGCT III are connected, the negative electrode of IGCT II, the anode positive and negative electrode with Capacitor banks A respectively of IGCT III are connected, described IGCT IV anode, IGCT V negative electrode positive and negative electrode with Capacitor banks A respectively is connected, IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the input of soldering set, IGCT V anode is connected with the anode of IGCT I, and is connected with the cathode output end of source of welding current output module.
The negative electrode of described IGCT VI, the anode negative, positive pole with rectified three-phase circuit module outfan respectively of IGCT VII are connected, the anode of IGCT VI, the negative electrode of IGCT VII are connected with the negative, positive pole of Capacitor banks B respectively, the negative electrode of described IGCT VIII, IGCT Ⅸ anode are connected with the negative, positive pole of Capacitor banks B respectively, the anode of IGCT VIII, IGCT Ⅸ negative electrode are connected with the negative, positive pole of soldering set input respectively, and the control pole of each IGCT connects with the triggering corresponding outfan of circuit respectively.
The quantity of described welding output unit is 1,2 or multiple.
Described Capacitor banks A, Capacitor banks B are for be composed in parallel by multiple capacitors.
Owing to using technique scheme, the welding supply of a kind of low impact load of this utility model has a following beneficial effect:
1. this utility model includes rectified three-phase circuit module and welding output unit, described welding output unit includes source of welding current output module, soldering set, striking auxiliary device, auxiliary welding equipment and IGCT I, in the case of not welding, i.e. soldering set loop is off, now connect IGCT II, IGCT III, striking capacitor is connected with rectified three-phase circuit module, allows rectified three-phase circuit module that striking Capacitor banks A to be charged；When soldering set is in striking state, cutoff thyristor I, IGCT II, IGCT III, connect IGCT IV, IGCT V, now striking Capacitor banks A and source of welding current output module are in series connection, soldering set can be made to obtain the higher striking voltage of direct current power source voltage than the output of rectified three-phase circuit module, such that it is able to reduce the requirement that rectified three-phase circuit module needs output HIGH voltage, the IGCT running voltage of source of welding current output module is made to reduce and improve the life-span；After proceeding to welding, cutoff thyristor IV, IGCT V, cutoff thyristor VI, IGCT VII, connect IGCT I, IGCT VIII, IGCT Ⅸ, now welding Capacitor banks B is in parallel connection with source of welding current output module, therefore welding Capacitor banks B can export electric current to soldering set with source of welding current output module simultaneously, reduce the electric current output of source of welding current output module, improve the life-span of source of welding current output module IGCT.This utility model can be substantially reduced the impact load of electrical network, compared with traditional electric welding machine, owing to welding supply of the present utility model can be in parallel with source of welding current output module at normal weld stage welding Capacitor banks B, jointly export welding current, and the charging welding Capacitor banks B is to complete in the time period that welding stop phase or weld load are relatively low such that it is able to play peak load shifting and reduce the effect of impact load.
2. reduce the dash current of source of welding current output module IGCT, voltage and improve the life-span.The output voltage of the welding supply of existing DC welding machine is high, electric current output is all exported by thyristor control, and the surge voltage, the electric current that bear are the biggest, are easily damaged.Welding supply of the present utility model is because obtaining the striking voltage of the welding arc that ignites when striking by series connection striking Capacitor banks A, so that welding job can work under relatively low rectifier output voltage, reduce the running voltage of electric current output IGCT in former welding supply, share welding current by welding Capacitor banks B during welding, thus reduce by the dash current of electric current output IGCT in former welding supply.Simultaneously, welding supply of the present utility model uses the frame mode of rectifying power supply apparatus band multiple welding current outfan, the capacity of rectifying power supply apparatus is big, and the outfan at rectifying power supply apparatus effectively suppresses the peak voltage impact to IGCT also by more jumbo capacitor in parallel.Therefore, it is possible to be effectively improved the life-span of source of welding current output module IGCT.
3. eliminate the uneven impact on power supply quality of intermittent threephase load in short-term.Due to this welding supply capacity big employing three-phase rectifier power supply device more economically, the poised state of threephase load can be kept during weld job, thus eliminate the uneven impact on power supply quality of the intermittence threephase load in short-term using tradition electric welding machine or welding supply to use single phase poaer supply input to produce.
4. improve the service efficiency of welding production line welding equipment and reduce cost.Tradition electric welding machine is that a welding supply joined by a soldering set, use this welding supply can share a set of source of welding current fairing by some soldering sets after setting up the welding equipment of welding production line, it is possible to increase the service efficiency of source of welding current fairing also reduces cost.
Below, in conjunction with Figure of description and specific embodiment, the technical characteristic of the welding supply of a kind of low impact load of this utility model is further described.
Accompanying drawing explanation
A kind of circuit diagram (IGCT I negative electrode is connected with the negative pole of source of welding current output module) of the welding supply of the low impact load of Fig. 1: this utility model.
A kind of circuit diagram (IGCT I anode is connected with the positive pole of source of welding current output module) of the welding supply of the low impact load of Fig. 2: this utility model.
In above-mentioned accompanying drawing, each label declaration is as follows:
1-rectified three-phase circuit module, 2-source of welding current output module, 3-soldering set, 4-striking auxiliary device, 5-auxiliary welding equipment.
Detailed description of the invention
A kind of welding supply of low impact load, including rectified three-phase circuit module 1 and welding output unit, described welding output unit includes that source of welding current output module 2, soldering set 3, striking auxiliary device 4, auxiliary welding equipment 5 and IGCT I, described rectified three-phase circuit module 1 are connected with three-phase alternating-current supply.
Described source of welding current output module 2 is connected with rectified three-phase circuit module 1, and this source of welding current output module 2 is connected with soldering set 3, and access IGCT I of connecting between source of welding current output module 2 with soldering set 3.The input of described source of welding current output module 2 is connected with two outfans of rectified three-phase circuit module 1, two outfans of this source of welding current output module 2 are connected with the input of soldering set 3, and access IGCT I of connecting between the outfan of one of them source of welding current output module 2 with soldering set 3, described IGCT I negative electrode is connected with the cathode output end of source of welding current output module 2, IGCT I anode is connected with the input of soldering set 3, controls pole and is connected with the outfan of triggering circuit (omitting in figure).
Described striking auxiliary device 4 is made up of IGCT II, IGCT III, IGCT IV, IGCT V and Capacitor banks A, the DC source that the input of this striking auxiliary device 4 is exported with rectified three-phase circuit module 1 by IGCT II, IGCT III is connected, outfan is in parallel with IGCT I by IGCT IV, IGCT V, and the outfan of striking auxiliary device 4 is connected in the loop between source of welding current output module 2 and soldering set 3；The anode of described IGCT II, the negative electrode of IGCT III is respectively with rectified three-phase circuit module 1 outfan just, negative pole connects, the negative electrode of IGCT II, the anode of IGCT III is respectively with Capacitor banks A just, negative pole connects, described IGCT IV anode, IGCT V negative electrode is respectively with Capacitor banks A just, negative pole connects, IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the cathode output end of source of welding current output module 2, IGCT V anode is connected with the anode of IGCT I, and be connected with the input of soldering set 3, the control pole of each IGCT connects with triggering circuit (omitting in figure) corresponding outfan respectively.
Described auxiliary welding equipment 5 is made up of IGCT VI, IGCT VII, IGCT VIII and IGCT Ⅸ and Capacitor banks B, the DC source that the input of this auxiliary welding equipment 5 is exported with rectified three-phase circuit module 1 by IGCT VI, IGCT VII is connected, and outfan is connected with soldering set 3 after source of welding current output module 2 parallel connection by IGCT VIII and IGCT Ⅸ.The negative electrode of described IGCT VI, the anode negative, positive pole with rectified three-phase circuit module 1 outfan respectively of IGCT VII are connected, the anode of IGCT VI, the negative electrode of IGCT VII are connected with the negative, positive pole of Capacitor banks B respectively, the negative electrode of described IGCT VIII, IGCT Ⅸ anode are connected with the negative, positive pole of Capacitor banks B respectively, the anode of brake tube VIII, IGCT Ⅸ negative electrode negative, positive pole with soldering set 3 input respectively is connected, the control pole of each IGCT respectively with trigger circuit (omitting in figure) corresponding outfan connection.
Above-described each IGCT is turn-off thyristor, and the pole that controls of each IGCT is connected with the outfan triggering circuit.
As required, the quantity of described welding output unit can be 1,2 or multiple, and i.e. described welding output unit quantity can be 3-200.Described Capacitor banks A, Capacitor banks B are for be composed in parallel by multiple capacitors.Watch for convenience and understand, described IGCT I, IGCT II, IGCT III, IGCT IV, IGCT V, IGCT VI, IGCT VII, IGCT VIII and IGCT Ⅸ represents with meeting K1, K2, K3, K4, K5, K6, K7, K8 and K9 respectively, and described Capacitor banks A, Capacitor banks B represents (seeing Fig. 1) with meeting C1, C2 respectively.
A kind of conversion as the present embodiment: when described IGCT I anode is connected with the cathode output end of source of welding current output module 2, when IGCT I negative electrode is connected with the input of soldering set 3, described IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the input of soldering set 3, IGCT V anode is connected with the anode of IGCT I, and be connected with the cathode output end of source of welding current output module 2, the pole that controls of each IGCT is connected with the outfan triggering circuit.
Operation principle is: three-phase alternating-current supply rectification after rectified three-phase circuit module 1 blood pressure lowering is converted into the direct current power source voltage being suitable for welding, soldering set 3 is exported through IGCT K1 by source of welding current output module 2, simultaneously at unidirectional current source parallel connection striking capacitor (i.e. Capacitor banks A, C1) and welding capacitor (i.e. Capacitor banks B, C2), series thyristor K2 between striking capacitor and DC source, K3, striking capacitor is also through IGCT K4, K5 is in parallel with IGCT K1, the K1 cut-off when welding striking, striking capacitor and source of welding current output module 2 form series circuit, to obtain the higher striking voltage of direct current power source voltage than rectified three-phase circuit module 1 output；Series thyristor K6, K7 between welding capacitor and DC source, welding capacitor is also in parallel with the outfan of source of welding current output module 2 through IGCT K8, K9, welds capacitor when normal weld and can jointly export welding current with source of welding current output module 2.I.e., in the welding striking stage, IGCT K1 ends, K2, K3 cut-off makes striking capacitor and (rectified three-phase circuit module 1 output) DC source isolation, and K4, K5 conducting, making striking capacitor and source of welding current output module 2 form series circuit and make soldering set 3 obtain higher direct current striking voltage, after striking completes, IGCT K4, K5 end, and K2, K3 turn on；During normal weld, IGCT K1, K8, K9 turn on, and make welding capacitor in parallel with the outfan of source of welding current output module 2, jointly export welding current, and welding terminates IGCT K1, K8, K9 cut-off.IGCT K6, K7 then turn in the time period that welding stop phase or weld load are relatively low according to the feature of weld job and charge to welding capacitor, and the specifically charging of welding capacitor is also dependent on the feature sets itself of actual welding load.Charged to striking capacitor by conducting thyristor K2, K3 need not striking when.
In circuit, each IGCT (i.e. IGCT I, IGCT II, IGCT III, IGCT IV, IGCT V, IGCT VI, IGCT VII, IGCT VIII and IGCT Ⅸ) turns on and completes with the triggering circuit by single-chip microcomputer or Controlled by Programmable Controller that triggers ended, on automatic welding device during application, after the establishment completing welding procedure sets, control program i.e. automatically generate.
Claims (9)
1. the welding supply of a low impact load, it is characterized in that: include rectified three-phase circuit module (1) and welding output unit, described welding output unit includes that source of welding current output module (2), soldering set (3), striking auxiliary device (4), auxiliary welding equipment (5) and IGCT I, described rectified three-phase circuit module (1) are connected with three-phase alternating-current supply；
Described source of welding current output module (2) is connected with rectified three-phase circuit module (1), and this source of welding current output module (2) is connected with soldering set (3), and access IGCT I of connecting between source of welding current output module (2) with soldering set (3)；
Described striking auxiliary device (4) is made up of IGCT II, IGCT III, IGCT IV, IGCT V and Capacitor banks A, the DC source that the input of this striking auxiliary device (4) is exported with rectified three-phase circuit module (1) by IGCT II, IGCT III is connected, outfan is in parallel with IGCT I by IGCT IV, IGCT V, and the outfan of striking auxiliary device (4) is connected in the loop between source of welding current output module (2) and soldering set (3)；
Described auxiliary welding equipment (5) is made up of IGCT VI, IGCT VII, IGCT VIII and IGCT Ⅸ and Capacitor banks B, the DC source that the input of this auxiliary welding equipment (5) is exported with rectified three-phase circuit module (1) by IGCT VI, IGCT VII is connected, and outfan is connected with soldering set (3) with after source of welding current output module (2) parallel connection by IGCT VIII and IGCT Ⅸ；
Above-described each IGCT is turn-off thyristor.
The welding supply of a kind of low impact load the most according to claim 1, it is characterized in that: the input of described source of welding current output module (2) is connected with two outfans of rectified three-phase circuit module (1), two outfans of this source of welding current output module (2) are connected with the input of soldering set (3), and access IGCT I of connecting between the outfan of one of them source of welding current output module (2) with soldering set (3).
The welding supply of a kind of low impact load the most according to claim 2, it is characterized in that: described IGCT I negative electrode is connected with the cathode output end of source of welding current output module (2), IGCT I anode is connected with the input of soldering set (3), and the pole that controls of each IGCT is connected with the outfan triggering circuit.
The welding supply of a kind of low impact load the most according to claim 2, it is characterized in that: described IGCT I anode is connected with the cathode output end of source of welding current output module (2), IGCT I negative electrode is connected with the input of soldering set (3), and the pole that controls of each IGCT is connected with the outfan triggering circuit.
The welding supply of a kind of low impact load the most according to claim 3, it is characterized in that: the anode of described IGCT II, the negative electrode of IGCT III is respectively with rectified three-phase circuit module (1) outfan just, negative pole connects, the negative electrode of IGCT II, the anode of IGCT III is respectively with Capacitor banks A just, negative pole connects, described IGCT IV anode, IGCT V negative electrode is respectively with Capacitor banks A just, negative pole connects, IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the cathode output end of source of welding current output module (2), IGCT V anode is connected with the anode of IGCT I, and be connected with the input of soldering set (3).
The welding supply of a kind of low impact load the most according to claim 4, it is characterized in that: the anode of described IGCT II, the negative electrode of IGCT III is respectively with rectified three-phase circuit module (1) outfan just, negative pole connects, the negative electrode of IGCT II, the anode of IGCT III is respectively with Capacitor banks A just, negative pole connects, described IGCT IV anode, IGCT V negative electrode is respectively with Capacitor banks A just, negative pole connects, IGCT IV negative electrode is connected with the negative electrode of IGCT I, and be connected with the input of soldering set (3), IGCT V anode is connected with the anode of IGCT I, and be connected with the cathode output end of source of welding current output module (2).
The welding supply of a kind of low impact load the most according to claim 1, it is characterized in that: the negative electrode of described IGCT VI, the anode of IGCT VII negative with rectified three-phase circuit module (1) outfan respectively, positive pole connects, the anode of IGCT VI, the negative electrode of IGCT VII negative with Capacitor banks B respectively, positive pole connects, the negative electrode of described IGCT VIII, IGCT Ⅸ anode negative with Capacitor banks B respectively, positive pole connects, the anode of IGCT VIII, IGCT Ⅸ negative electrode negative with soldering set (3) input respectively, positive pole connects, the control pole of each IGCT connects with the triggering corresponding outfan of circuit respectively.
The welding supply of a kind of low impact load the most according to claim 1, it is characterised in that: the quantity of described welding output unit is 1,2 or multiple.
The welding supply of a kind of low impact load the most according to claim 1, it is characterised in that: described Capacitor banks A, Capacitor banks B are for be composed in parallel by multiple capacitors.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620463216.6U CN205733366U (en) | 2016-05-20 | 2016-05-20 | A kind of welding supply of low impact load |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620463216.6U CN205733366U (en) | 2016-05-20 | 2016-05-20 | A kind of welding supply of low impact load |
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| CN205733366U true CN205733366U (en) | 2016-11-30 |
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| CN201620463216.6U Withdrawn - After Issue CN205733366U (en) | 2016-05-20 | 2016-05-20 | A kind of welding supply of low impact load |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798428A (en) * | 2016-05-20 | 2016-07-27 | 柳州职业技术学院 | Welding power supply device with low impact load |
-
2016
- 2016-05-20 CN CN201620463216.6U patent/CN205733366U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105798428A (en) * | 2016-05-20 | 2016-07-27 | 柳州职业技术学院 | Welding power supply device with low impact load |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20161130 Effective date of abandoning: 20180116 |
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| AV01 | Patent right actively abandoned |