CN216304002U - Current drainage device for overhauling welding of electrolytic cell - Google Patents
Current drainage device for overhauling welding of electrolytic cell Download PDFInfo
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- CN216304002U CN216304002U CN202122818879.9U CN202122818879U CN216304002U CN 216304002 U CN216304002 U CN 216304002U CN 202122818879 U CN202122818879 U CN 202122818879U CN 216304002 U CN216304002 U CN 216304002U
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- electrolytic cell
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Abstract
The utility model discloses a current drainage device for overhauling and welding an electrolytic cell, which comprises a drainage device, wherein the drainage device is a drainage conductor and is arranged between a first upright post bus of the overhauling electrolytic cell and a second upright post bus of a downstream electrolytic cell. The utility model adopts the drainage device as a current drainage conductor, one end of the current drainage device is connected with the upright post bus of the overhaul electrolytic tank, and the other end of the current drainage device is connected with the upright post bus of the downstream electrolytic tank, so that the current of the overhaul electrolytic tank enters the upright post bus of the downstream electrolytic tank through the drainage device, the magnetic induction intensity around the electrolytic tank is changed by changing the trend and the current quantity of the current of the electrolytic tank, the aim of reducing the magnetic induction intensity of a local target point is fulfilled, the current drainage device is convenient to install and operate, and the implementation difficulty is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of aluminum oxide blanking equipment of an electrolytic cell, and relates to a current drainage device for overhauling and welding the electrolytic cell.
Background
In the aluminum electrolysis production, a plurality of electrolytic tanks are connected in series and are powered by direct current large current, the magnetic field intensity generated by the electrolytic tank with the capacity of 160kA-600kA is about 100-600Gs, and steel-steel welding and aluminum-aluminum welding can not be basically realized by adopting the common welding technology and equipment under the high magnetic field. At present, the cathode steel bar and the bus of the 160kA-600kA electrolytic cell can only be welded by adopting a compression joint technology or a power failure and current reduction mode.
However, the connection between the conductors is realized by adopting a crimping mode, and compared with a welding mode, the connection voltage drop is higher; in addition, after the aluminum electrolytic cell constructed in a crimping mode runs for a period of time, the cathode bus locally can also be loosened, so that the voltage drop is further increased, the current balance of the electrolytic cell is damaged while more energy is consumed, the magnetic field is unreasonable, and the stability and the production efficiency of the electrolytic cell are reduced. The adoption of power failure and current reduction to realize the connection between conductors can cause the reduction of production of other electrolytic tanks in the series, the increase of reactive power consumption and the increase of the discharge of PFC, and even impact the power grid.
However, the welding mode is influenced by the magnetic field, welding cannot be performed under the condition of serial electrification, and the welding operation can be performed only after serial power failure; because the power failure time is limited (the power failure of the electrolysis series is generally controlled within 1 hour), all welding can not be completed by one power failure, and the power failure welding is usually required for multiple times, which brings great trouble to the electrolysis production.
A series of full-current aluminum cell strip electric welding method and equipment are disclosed in the patent number CN 102059428A. However, the main technical equipment of the patent is that a cross-cell emergency bus is arranged between an anode large bus of the electrolytic cell and a downstream cell upright post bus, and the basic condition of the installation is that the upper structure of the electrolytic cell must be installed in place, otherwise the technical scheme is difficult to implement; secondly, the cross-cell emergency bus in the patent is located at a higher position of the electrolytic cell, and is inconvenient to install, operate and support.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the current guiding device for the overhaul welding of the electrolytic cell is provided, and the magnetic induction intensity around the electrolytic cell is changed by changing the direction and the current magnitude of the current of the electrolytic cell so as to achieve the purpose of reducing the magnetic induction intensity of a local target point.
The technical scheme adopted by the utility model is as follows: a current drainage device for the overhaul welding of an electrolytic cell comprises a drainage device, wherein the drainage device is a drainage conductor and is arranged between a first upright post bus of the overhaul electrolytic cell and a second upright post bus of a downstream electrolytic cell.
Preferably, the drainage device is provided with a plurality of groups on the electrolytic cell, and the number of the drainage devices is equal to or less than that of the first upright post buses of the overhaul electrolytic cell.
Preferably, two ends of the drainage device are respectively connected with the first upright post bus bar of the overhaul electrolytic cell and the second upright post bus bar of the downstream electrolytic cell in a field compression joint mode.
Preferably, the drainage device adopts a sectional connection mode, and two adjacent sections are connected through a connector.
Preferably, the connector is a bolt or a clamp.
Preferably, the drainage device is mounted on a trough edge plate of the electrolytic bath through a support frame.
The utility model has the beneficial effects that: compared with the prior art, the utility model adopts the drainage device as a current drainage conductor, one end of the current drainage device is connected with the upright post bus of the overhaul electrolytic tank, and the other end of the current drainage device is connected with the upright post bus of the downstream electrolytic tank, so that the current of the overhaul electrolytic tank enters the upright post bus of the downstream electrolytic tank through the drainage device, the magnetic induction intensity around the tank is changed by changing the trend and the current quantity of the current of the electrolytic tank, the aim of reducing the magnetic induction intensity of a local target point is fulfilled, the current drainage device is convenient to install and operate, and the implementation difficulty is greatly reduced.
Drawings
FIG. 1 is a schematic view of a current drainage method for an aluminum electrolysis cell;
FIG. 2 is a schematic plan view of a drainage method for an aluminum electrolysis cell;
FIG. 3 is a schematic view of the sectional type drainage device;
fig. 4 is a schematic view of the installation of the drainage device.
Detailed Description
The utility model is further described with reference to the accompanying drawings and specific embodiments.
Example 1: as shown in figures 1-4, the current drainage device for the electrolytic cell overhaul welding comprises a drainage device 5, wherein the drainage device 5 is a drainage conductor and is arranged between a first upright post bus bar 3 of an overhaul electrolytic cell 1 and a second upright post bus bar 4 of a downstream electrolytic cell 2.
When the cathode steel bar connecting plate of the overhaul groove of the aluminum electrolytic cell is welded, in order to reduce the magnetic field at the welding point, the drainage device 5 is provided with a plurality of groups on the electrolytic cell, and the number of the drainage devices is equal to or less than the number of the first 3 upright post buses of the overhaul electrolytic cell.
Before the drainage device is installed, series current can only enter a downstream groove through a groove bottom short-circuit bus of the overhaul groove; after the drainage device is installed, the series current can enter a downstream tank through a tank bottom short-circuit bus and the drainage device on the upper part of the overhaul tank; in the process of welding, series current enters a downstream tank through three paths including a tank bottom short-circuit bus, a drainage device at the upper part of the overhaul tank and a cathode steel bar of the overhaul tank.
According to the ampere rule (right-hand spiral rule), because the drainage device is positioned above the welding point cathode steel bar and the tank bottom short-circuit bus is positioned below the welding point cathode steel bar, interaction and offset can be generated at the welding point of the cathode steel bar head, so that vector values of a magnetic field are reduced in different degrees.
Preferably, two ends of the drainage device 5 are respectively connected with the first upright post bus 3 of the overhaul electrolytic cell and the second upright post bus 4 of the downstream electrolytic cell in a field compression joint mode, and the conductive connection is stable and reliable after compression joint.
Preferably, the drainage device 5 adopts a sectional type connection mode, two adjacent sections are connected through a connector 7, and the sectional type structure is convenient for crimping.
Preferably, the connector 7 is a bolt or a clamp, and is convenient and quick to assemble and disassemble.
Preferably, the drainage device 5 is mounted on the trough edge plate of the electrolytic trough 1 by a support frame 8.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention, and therefore, the scope of the present invention should be determined by the scope of the claims.
Claims (6)
1. The utility model provides a be used for electrolysis trough overhaul welded current drainage device which characterized in that: the device comprises a drainage device (5), wherein the drainage device (5) is a drainage conductor and is arranged between a first upright post bus (3) of an overhaul electrolytic tank (1) and a second upright post bus (4) of a downstream electrolytic tank (2).
2. A current diversion apparatus for use in electrolytic cell overhaul welding as claimed in claim 1 wherein: the drainage device (5) is provided with a plurality of groups on the electrolytic cell, and the number of the drainage devices is equal to or less than that of the upright post buses I (3) of the overhaul electrolytic cell.
3. A current diversion apparatus for use in electrolytic cell overhaul welding as claimed in claim 1 wherein: two ends of the drainage device (5) are respectively connected with a first upright post bus (3) of the overhaul electrolytic cell and a second upright post bus (4) of the downstream electrolytic cell in a field compression joint mode.
4. A current diversion apparatus for use in electrolytic cell overhaul welding as claimed in claim 1 wherein: the drainage device (5) adopts a sectional connection mode, and two adjacent sections are connected through a connector (7).
5. A current diversion apparatus for use in electrolytic cell overhaul welding as claimed in claim 1 wherein: the connector (7) is a bolt or a clamp.
6. A current diversion apparatus for use in electrolytic cell overhaul welding as claimed in claim 1 wherein: the drainage device (5) is arranged on a groove edge plate of the electrolytic tank (1) through a support frame (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818879.9U CN216304002U (en) | 2021-11-17 | 2021-11-17 | Current drainage device for overhauling welding of electrolytic cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122818879.9U CN216304002U (en) | 2021-11-17 | 2021-11-17 | Current drainage device for overhauling welding of electrolytic cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216304002U true CN216304002U (en) | 2022-04-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122818879.9U Active CN216304002U (en) | 2021-11-17 | 2021-11-17 | Current drainage device for overhauling welding of electrolytic cell |
Country Status (1)
| Country | Link |
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| CN (1) | CN216304002U (en) |
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2021
- 2021-11-17 CN CN202122818879.9U patent/CN216304002U/en active Active
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