CN103806015B - Electric welding compensation system is with under a kind of potline total current - Google Patents
Electric welding compensation system is with under a kind of potline total current Download PDFInfo
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- CN103806015B CN103806015B CN201210436787.7A CN201210436787A CN103806015B CN 103806015 B CN103806015 B CN 103806015B CN 201210436787 A CN201210436787 A CN 201210436787A CN 103806015 B CN103806015 B CN 103806015B
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Abstract
The invention discloses a kind of under potline total current, the drainage compensation system with variable resistor regulatory function during charged welded cathode rod iron.Drainage magnetic compensation device (1) is as drainage conductor, be communicated with the anode large bus bar (4) of overhaul electrolyzer (2) and the riser bus bar (5) of downstream electrolyzer, make part or all of potline current not by overhaul electrolyzer (2) itself or bottom land short-circuit busbar (8), but directly enter downstream electrolyzer (3) by drainage magnetic compensation device (1).Drainage magnetic compensation device (1) is arranged one or more groups current-carrying switch, by the closed of switch and unlatching, change the resistance of drainage magnetic compensation device (1) to regulate its current flow, thus reach the object of control objectives regional magnetic field size, present invention reduces the welding operation time, simplify the structure and operation, avoid the impact of welding on electrolysis production.
Description
Technical field
The present invention relates to the welding set of cathode steel bar, soft ribbons and bus under a kind of pot line total current, belong to technical field of aluminum electrolysis.
Background technology
Aluminium Electrolysis is connected into series by multiple stage electrolyzer, employing D.C. high-current is powered, and the magneticstrength that the electrolyzer of 160kA-600kA capacity produces is about 100-400Gs, under this high-intensity magnetic field, adopt common welding technique and equipment substantially can not realize steel-steel welding and aluminium-aluminium welding.The current electrolytic cell cathode steel bar to 160kA-600kA and bus connect can only adopt crimp technology or power failure, fall current mode welds.
But employing crimping mode realizes the connection between conductor, compares welding process, connects pressure drop higher; And adopt the aluminium cell that crimping mode is constructed, after operation for some time, negative busbar local also can loosen, cause pressure drop to raise further, the while of how catabiotic, also destroy the current balance type of electrolyzer, cause magnetic field unreasonable, the stability of electrolyzer and production efficiency reduce.Adopt and have a power failure, fall the connection that current mode realizes between conductor, other electrolyzer underproduction in series can be caused, idle power consumption increases, the discharge of PFC increases, even can impact electrical network.
But welding process is due to affected by magnetic fields, cannot welding in series energising situation, must series have a power failure after just can carry out welding operation; Due to power off time limited (electrolytic series has a power failure and generally must control within an hour), once have a power failure and cannot complete whole welding, usually need the welding that repeatedly has a power failure, this brings very large puzzlement to electrolysis production.
Method and the equipment of aluminium cell band electric welding under a kind of serial total current is disclosed in " under serial total current aluminium cell band electricity welding method and equipment " (publication number: CN102059428A, publication date: 2011.05.18).Need in this invention first overhaul electrolyzer to be divided into some regions, then many group cross-slot emergency bus are set, cross-slot emergency bus one end is connected to the large bus of overhaul anode electrolytic cell by arcuate jig and balance bus, the other end connects the riser bus bar of downstream electrolyzer by column gate fixture, and such mode of connection is relatively loaded down with trivial details.Corresponding riser bus bar and bottom land short-circuit busbar (welding is had the greatest impact) need be disconnected during welding different zones, connect the cross-slot emergency bus in other region simultaneously, a problem is also there is: the electric current carried out in cathode steel bar along with welding process can change while this process is consuming time, but be now difficult to regulate, namely dynamic in time adjustment initiatively the electric current of cathode steel bar can not be flowed through in welding process, the quality of Influence on test result welding and process.Although be with electric welding can delay aluminium liquid cooling but in addition, crossing long uneven electric current can impact electrolysis production.
Summary of the invention
Under the technical problem to be solved in the present invention is to provide a kind of potline total current, the compensation system used during charged welded cathode rod iron, this compensation system dynamic regulating resistance, has drainage shunting action easily.
Technical scheme of the present invention is: in overhaul electrolyzer, install drainage magnetic compensation device and as the conductor of electric current, its one end connects the large bus of overhaul anode electrolytic cell, the other end connects the riser bus bar of downstream electrolyzer, and this drainage magnetic compensation device is positioned at the top of overhaul electrolytic cell cathode steel bar.Its objective is the riser bus bar making electric current flow to downstream electrolyzer through this device from the anode large bus bar of overhaul electrolyzer, like this, in welding process, potline current just has three paths: through drainage magnetic compensation device, through cathode steel bar, through bottom land short-circuit busbar.Flow through the electric current of cathode steel bar when alleviating welding by shunting action, reduce the magnetic field that it produces, make welding process can continue to carry out.
At least comprise one group of switch in drainage magnetic compensation device, switch adopts welding process to be connected in drainage magnetic compensation device.Can arrange during actual use and organize switch more, by the closed of switch and unlatching, change the resistance sizes of drainage magnetic compensation device, thus the current flow size of dynamic adjustments drainage magnetic compensation device, and then reach the object of change electrolysis bath circumference magneticstrength.
The connection of drainage magnetic compensation device and anode large bus bar or riser bus bar is on-the-spotly crimp mode; Drainage magnetic compensation device crimp with a face of riser bus bar or multiple crimp simultaneously.
Many group drainage magnetic compensation devices can be set in overhaul electrolyzer, but the quantity of drainage magnetic compensation device is less than or equal to the riser bus bar quantity of downstream electrolyzer.
In addition, according to Ampere's law (right-hand screw rule), because drainage magnetic compensation device is positioned at the top of welding point cathode rod iron, and bottom land short-circuit busbar is positioned at the below of welding point cathode rod iron, the two magnetic field produced can produce at cathode steel caput welding point place and interact and offset, and causes the vector value in magnetic field to have reduction in various degree.
The present invention introduces drainage magnetic compensation device on " under serial total current aluminium cell band electricity welding method and equipment " basis, the perfect function of cross-slot emergency bus, simplifies and is connected with the fixture of riser bus bar and anode large bus bar, jig.By opening or close switch, change the trend of overhaul electrolytic cell currents and dynamically regulate drainage flow (electric current), reduce overhaul electrolysis bath circumference magnetic field, make the magnetic field at weld place meet the welding requirement of common welding machine, welding process continues and does not affect welding quality.This device effectively saves installation and operating time, avoids the Influence of production because local aluminum liquid cooling but brings.
Accompanying drawing explanation
Fig. 1 is the installation site schematic diagram of drainage magnetic compensation device;
Fig. 2 is drainage magnetic compensation device circuit schematic diagram;
When Fig. 3 is the welding of overhaul groove cathode steel bar, the schematic circuit diagram of potline current after installation drainage magnetic compensation device;
Fig. 4 is multiple drainage magnetic compensation device and the position view of used time.
Embodiment
As shown in Figure 3, Aluminium Electrolysis is connected into series by multiple stage electrolyzer, here needing to carry out to be with the electrolyzer of electric welding to be defined as overhaul electrolyzer 2, the front end electrolyzer of series connection with it is upstream electrolyzer 9, the electrolyzer of overhaul electrolyzer 2 rear end series connection is defined as downstream electrolyzer 3, is followed successively by drainage magnetic compensation device 1, cathode steel bar 7 and bottom land short-circuit busbar 8 in overhaul electrolyzer 2 from top to bottom.
When welding cathode steel bar 7 web plate of electrolysis of aluminum overhaul electrolyzer 2, in order to reduce the magnetic field at welding point place, many groups drainage magnetic compensation device 1 is installed, as shown in Figure 4.Its one end connects the anode large bus bar 4 of overhaul electrolyzer 2, and the other end connects the riser bus bar 5 of downstream electrolyzer 3, and drainage magnetic compensation device 1 has five groups of switches 6.The connection of drainage magnetic compensation device 1 and anode large bus bar 4 and riser bus bar 5 is on-the-spotly crimp mode.Multiple of drainage magnetic compensation device 1 and riser bus bar 5 crimp simultaneously.
Before installing drainage magnetic compensation device 1, potline current can only enter downstream electrolyzer 3 by the bottom land short-circuit busbar 8 of overhaul electrolyzer 2; After installing drainage magnetic compensation device 1, potline current enters downstream electrolyzer 3 by the drainage magnetic compensation device 1 on female 8 lines of bottom land short circuit and overhaul electrolyzer 2 top; In the process implementing welding, potline current by the cathode steel bar 7 of the drainage magnetic compensation device 1 on bottom land short-circuit busbar 8, overhaul electrolyzer 2 top, overhaul electrolyzer 2 totally three paths enter downstream electrolyzer 3.So just, serve shunting action, reduce magneticstrength.
In addition according to Ampere's law (right-hand screw rule), because drainage magnetic compensation device 1 is positioned at the top of welding point cathode rod iron 7, and bottom land short-circuit busbar 8 is positioned at the below of welding point cathode rod iron 7.Therefore, can produce at cathode steel bar 7 welding point places and interact and offset, cause the vector value in magnetic field to have reduction in various degree.
In the present embodiment by the closed of switch 6 and unlatching dynamic adjustments resistance, then dynamically change drainage flow, then change magneticstrength, be beneficial to welding to make the magnetic field at cathode steel bar 7 place drop to minimum.
Claims (3)
1. be with electric welding compensation system under a potline total current, it is characterized in that: drainage magnetic compensation device (1) one end connects the anode large bus bar (4) of overhaul electrolyzer (2), the other end connects the riser bus bar (5) in downstream electrolyzer (3), drainage magnetic compensation device (1) is positioned at cathode steel bar (7) top, and comprises at least one group of switch (6).
2. be with electric welding compensation system under a kind of potline total current according to claim 1, it is characterized in that: the connection of drainage magnetic compensation device (1) and anode large bus bar (4) or riser bus bar (5) is on-the-spotly crimp mode; Drainage magnetic compensation device (1) crimp with a face of riser bus bar (5) or multiple crimp simultaneously.
3. be with electric welding compensation system under a kind of potline total current according to claim 1, it is characterized in that: drainage magnetic compensation device (1) quantity is less than or equal to riser bus bar (5) quantity of downstream electrolyzer (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210436787.7A CN103806015B (en) | 2012-11-06 | 2012-11-06 | Electric welding compensation system is with under a kind of potline total current |
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| CN201210436787.7A CN103806015B (en) | 2012-11-06 | 2012-11-06 | Electric welding compensation system is with under a kind of potline total current |
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| CN103806015A CN103806015A (en) | 2014-05-21 |
| CN103806015B true CN103806015B (en) | 2016-04-13 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104294318B (en) * | 2013-07-15 | 2017-09-26 | 贵阳铝镁设计研究院有限公司 | Reduce the device and its operating method of aluminium cell welding position magnetic field intensity |
| CN105200456A (en) * | 2014-06-13 | 2015-12-30 | 贵阳铝镁设计研究院有限公司 | Structural configuration method for total-current magnetism drop welding of aluminum electrolysis series end tanks |
| CN104532296A (en) * | 2014-12-30 | 2015-04-22 | 贵州新峰机电设备有限公司 | Welding magnetic-reducing equipment for aluminum electrolysis cell under total current |
| CN108677217A (en) * | 2018-08-24 | 2018-10-19 | 贵州创新轻金属工艺装备工程技术研究中心有限公司 | One kind being suitable for aluminium electroloysis head slot and stern notch emergency set and its emergency method |
| CN115213579A (en) * | 2022-06-22 | 2022-10-21 | 首钢集团有限公司 | Method and device for controlling salient points on surface of welding spots of coated steel plate |
| CN117381311B (en) * | 2023-12-11 | 2024-03-05 | 赵玉春 | External span type flow guide bus device for replacing cathode soft belt of aluminum electrolysis cell |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102296326A (en) * | 2011-06-07 | 2011-12-28 | 河南中孚实业股份有限公司 | Magnetic shielding aluminum electrolytic cell |
| CN102409358A (en) * | 2011-12-26 | 2012-04-11 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis cell cathode steel rod hot-line welding mechanical-electrical shunt device |
| CN102618886A (en) * | 2012-04-26 | 2012-08-01 | 成都精容电子有限公司 | Magnetically-shielded aluminum electrolytic bath |
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- 2012-11-06 CN CN201210436787.7A patent/CN103806015B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102296326A (en) * | 2011-06-07 | 2011-12-28 | 河南中孚实业股份有限公司 | Magnetic shielding aluminum electrolytic cell |
| CN102409358A (en) * | 2011-12-26 | 2012-04-11 | 贵阳铝镁设计研究院有限公司 | Aluminum electrolysis cell cathode steel rod hot-line welding mechanical-electrical shunt device |
| CN102618886A (en) * | 2012-04-26 | 2012-08-01 | 成都精容电子有限公司 | Magnetically-shielded aluminum electrolytic bath |
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