Device for measuring pressure drop of steel connecting sheet for aluminum electrolysis cell
By designing a steel coupling sheet voltage drop measurement device in an aluminum electrolytic cell, the problem of difficult monitoring of the welding quality of the cathode steel rod and the aluminum soft belt busbar is solved, and the welding quality and power consumption are improved. It is suitable for different types of electrolytic cells. Application.
Patent Information
- Application Number
- CN202420610769.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-27
AI Technical Summary
During the overhaul of the aluminum electrolytic cell, the welding quality of the cathode steel rod and the cathode aluminum soft belt busbar explosion welding block is difficult to accurately monitor, resulting in poor welding, increasing power consumption and production losses, and in strong current, strong magnetic field, and high temperature Welding is difficult in environment.
A steel coupling sheet pressure drop measurement device for aluminum electrolytic cells is designed, including an insulating plate, measuring contact and a telescopic connecting rod. The pressure drop value of the steel coupling sheet is obtained through the multimeter reading to ensure tracking, supervision and optimization of welding quality.
It effectively improves the welding quality of steel coupling sheets, reduces production power consumption, and is suitable for different models of electrolytic cells, significantly reducing the cathode voltage drop value, thereby improving welding accuracy and production efficiency.
Smart Images
Figure CN222232557U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of aluminum electrolysis equipment, in particular to a steel connecting piece pressure drop measuring device for an aluminum electrolysis cell. Background Art
[0002] A large aluminum electrolytic cell in the aluminum electrolysis industry contains 18-24 cathode carbon blocks, each of which is embedded with one or two cathode steel bars by casting or tamping, and each cathode steel bar is connected to the cathode aluminum busbar. The specific connection method is: the cathode steel bar of the electrolytic cell is connected to the cathode aluminum soft strip busbar explosion welding block through a steel connecting piece, and the cathode aluminum soft strip busbar explosion welding block is connected to the cathode busbar through an aluminum soft strip, and the above connection methods are all welding.
[0003] When the electrolytic cell is overhauled, the cathode steel bar and steel connecting piece of the electrolytic cell will be cut off by gas cutting welding and cannot be used. When the aluminum electrolytic cell is overhauled and the furnace is built, the cathode steel bar, steel connecting piece and cathode aluminum soft belt busbar explosive welding block of the electrolytic cell need to be re-welded. Since the other cells in the electrolytic plant are in a strong current, strong magnetic field and high temperature environment during normal production, it is difficult to choose to weld the steel connecting piece without power outage; if the power outage is chosen for welding, it will have an adverse effect on other normal production cells in the series, and may also cause production suspension losses. Moreover, after the construction is completed, the cathode voltage drop of the poorly welded aluminum electrolytic cell will increase, resulting in an increase in DC power consumption. Therefore, based on the uneven welding quality of the cathode steel bar and the cathode aluminum soft belt busbar explosive welding block during the current online production cell overhaul, it is urgent to provide a steel connecting piece voltage drop measurement device that is widely applicable to different types of electrolytic cells to measure the welding quality of the cathode steel bar and steel connecting piece of the aluminum electrolytic cell in a timely and accurate manner. Utility Model Content
[0004] The utility model provides a device for measuring the pressure drop of a steel connecting piece for an aluminum electrolytic cell, the purpose of which is to improve the tracking and supervision of the welding quality of the cathode steel rod and the cathode aluminum soft belt busbar explosion welding block, timely track and analyze the distribution of the pressure drop value of the steel connecting piece, and continuously optimize the welding process of the steel connecting piece with the measurement result as the guide, improve the welding quality of the steel connecting piece, and reduce the production power consumption.
[0005] The utility model discloses a voltage drop measuring device for a steel connecting piece used in an aluminum electrolytic cell, comprising a cathode steel bar and a cathode aluminum soft belt busbar explosion welding block of the aluminum electrolytic cell, wherein the cathode steel bar and the cathode aluminum soft belt busbar explosion welding block are connected by a steel connecting piece at their end faces, and the voltage drop measuring device comprises an insulating plate, wherein two measuring contacts are connected to the bottom of the insulating plate, a connecting rod is connected to the top of the insulating plate, two connecting wires are wound around the connecting rod, one end of the connecting wires are respectively connected to different measuring contacts, and the other end is connected to a multimeter.
[0006] Preferably, the two measuring contacts are of unequal lengths.
[0007] Preferably, the connecting rod is retractable.
[0008] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0009] 1. The voltage drop measuring device provided by the utility model is provided with an insulating plate to avoid overlap between the measuring device and the electrolytic cell body, thereby preventing short circuit and sparking. Two measuring contacts, one long and one short, are connected to the bottom of the insulating plate, which is convenient for adjusting the measuring angle according to actual conditions, and effectively eliminates the height difference between the cathode steel rod and the cathode aluminum soft belt busbar explosion welding block. A connecting rod is connected to the top of the insulating plate, and the connecting wire is wound around the connecting rod. The measuring contact and the multimeter are connected, and the voltage drop value of the steel connecting piece is obtained timely and accurately by reading the reading of the multimeter, and the welding quality of the cathode steel rod and the cathode aluminum soft belt busbar explosion welding block is intuitively obtained. Finally, guided by the measurement results, the welding process of the steel connecting piece is continuously optimized, the welding quality of the steel connecting piece is improved, and the production power consumption is reduced.
[0010] 2. The voltage drop measuring device provided by the utility model has a retractable connecting rod, and the length of the connecting rod can be adjusted according to different environments and different measuring methods, so that it is widely applicable to cathode steel bars and cathode aluminum soft belt busbar explosive welding blocks with different height differences, with a wide range of applications and strong practicality.
[0011] 3. The voltage drop measuring device provided by the utility model is cleverly designed, simple and practical, and has low production cost. It has achieved good results after being used on site, and has effectively improved the welding quality of the overhaul channel steel connecting piece. After being used in a 200kA aluminum plant, the voltage drop of the steel connecting piece was reduced from 15mv-20mv to about 8mv, and the cathode voltage drop and production power consumption of the newly started electrolytic cell were significantly reduced. It has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 This is a front view of the pressure drop measuring device of the utility model;
[0013] In the figure: 1-insulating plate; 2-connecting wire; 3-connecting rod; 4-measuring contact; 5-multimeter; 6-cathode steel rod; 7-steel connecting piece; 8-cathode aluminum soft strip busbar explosion welding block. DETAILED DESCRIPTION
[0014] The utility model is further described below in conjunction with the accompanying drawings:
[0015] like Figure 1As shown, the utility model is a voltage drop measuring device for a steel connecting piece for an aluminum electrolytic cell, comprising a cathode steel bar 6 and a cathode aluminum soft strip busbar explosion welding block 8 of the aluminum electrolytic cell, and the cathode steel bar 6 and the cathode aluminum soft strip busbar explosion welding block 8 of the aluminum electrolytic cell are welded by a steel connecting piece 7. The voltage drop measuring device comprises an insulating plate 1, and two measuring contacts 4 are connected to the bottom of the insulating plate 1. The measuring contacts 4 are one long and one short, which is convenient for adjusting the measuring angle according to actual conditions, and effectively eliminating the height difference between the cathode steel bar 6 and the cathode aluminum soft strip busbar explosion welding block 8. A retractable connecting rod 3 is connected to the top of the insulating plate 1, and two connecting wires 2 are wound around the connecting rod 3. One end of the connecting wire 2 is connected to different measuring contacts 4 respectively, and the other end is connected to a multimeter 5. The connecting rod 3 and the measuring contact 4 are made of copper.
[0016] When measuring the voltage drop of the steel connecting piece 7, the multimeter 5 is connected to the connecting wire 2. First, the multimeter 5 is adjusted to the DC voltage 200mv position, and then the two measuring contacts 4 of the measuring device are pressed tightly against the surfaces of the cathode steel rod 6 and the cathode aluminum soft belt busbar explosion welding block 8 respectively. The long and short measuring contacts 4 can be adjusted in angle according to the on-site measurement position. After the readings are stable, read and record the data.
[0017] Before the voltage drop measuring device of the present application was promoted, the welding quality of the steel connecting piece could not be tracked and supervised because the voltage drop value information of the electrolytic cell steel connecting piece could not be obtained in time. The average voltage drop of the electrolytic cell steel connecting piece was as high as 12mv or more. After the voltage drop measuring device of the steel connecting piece provided by the present application was fully promoted, the long and short measuring probes facilitated the adjustment of the measuring angle, effectively eliminated the height difference between the cathode steel rod 6 and the cathode aluminum soft belt busbar explosion welding block 8, timely and effectively improved the tracking and supervision of the welding quality, improved the accuracy of the voltage drop measurement of the steel connecting piece 7, and reduced the cathode voltage drop of the newly started electrolytic cell to 9.6mv. Finally, guided by the measurement results, the welding process of the steel connecting piece was continuously optimized, the welding quality of the steel connecting piece 7 was improved, and the production power consumption was reduced.
Claims
1. A device for measuring the voltage drop of a steel connecting piece for an aluminum electrolytic cell, comprising a cathode steel bar (6) of the aluminum electrolytic cell and a cathode aluminum soft strip busbar explosion welding block (8), wherein the cathode steel bar (6) of the aluminum electrolytic cell and the cathode aluminum soft strip busbar explosion welding block (8) are connected at their end faces by a steel connecting piece (7), characterized in that: The voltage drop measuring device comprises an insulating plate (1), two measuring contacts (4) are connected to the bottom of the insulating plate (1), a connecting rod (3) is connected to the top of the insulating plate (1), two connecting wires (2) are wound around the connecting rod (3), one end of the connecting wires (2) is respectively connected to different measuring contacts (4), and the other end is connected to a multimeter (5).
2. A device for measuring the pressure drop of a steel connecting piece for an aluminum electrolytic cell according to claim 1, characterized in that: The two measuring contacts (4) are of unequal length.
3. A device for measuring the pressure drop of a steel connecting piece for an aluminum electrolytic cell according to claim 1 or 2, characterized in that: The connecting rod (3) is retractable.