Short circuit port bus consumption reduction device for aluminum electrolysis cell

Abstract

The utility model discloses a short circuit port bus consumption reduction device for an aluminum electrolysis cell, which comprises a cell periphery bus and a compensation bus, the compensation bus is arranged below the cell periphery bus, rib plates are respectively arranged on two sides of the cell periphery bus and the compensation bus, and a double-end bolt is arranged between the two rib plates. Matched nuts are arranged at the two ends of the double-end bolt respectively, the rib plate is formed by machining a high-conductivity aluminum alloy plate, and an anti-oxidation wear-resistant layer is arranged outside the rib plate. According to the utility model, the two aluminum alloy rib plates are arranged between the groove periphery bus and the compensation bus, so that the close-distance access of current can be realized, the transmission work of the current is reduced, the transmission consumption of the current on the groove periphery bus is greatly reduced, the empty power consumption of each groove is reduced by about 600 kilowatt-hours every day, and the production cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to a device for reducing energy consumption of the bottom busbar of a short-circuit diversion channel, and particularly to a device for reducing energy consumption of the short-circuit busbar in an aluminum electrolysis cell, belonging to the field of aluminum electrolysis technology. Background Technology

[0002] In actual electrolytic aluminum production, due to the age of the electrolytic cells and various objective conditions, electrolytic aluminum enterprises periodically carry out major overhauls of the electrolytic cells. During the major overhaul, the control of short-circuit voltage drop has always been a difficult problem in electrolytic production. After the cell is shut down, the current first flows to the column busbar, and then flows to the lower stage cell through the short-circuit. The current passes through many welding points and crimping joints, resulting in a large busbar voltage drop. Currently, during the shutdown of a 400KA electrolytic cell, the short-circuit voltage drop is basically 300 millivolts. After the cathode square steel is cut, the short-circuit voltage drop of some electrolytic cells will increase to 320 millivolts, with a daily power consumption of about 3080 kWh. The comprehensive power consumption of a single cell increases by about 4.5 kWh, which greatly increases the cost of electrolytic production. Moreover, in long-term operation, the contact parts are prone to deterioration of contact performance due to factors such as heating and oxidation, further increasing losses. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a short-circuit busbar energy-saving device for aluminum electrolysis cells. By setting two ribs between the busbar around the cell and the compensation busbar, the two busbars form a short-distance path, reducing the current movement distance in the busbar around the cell and greatly reducing production costs.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] A short-circuit busbar energy-saving device for aluminum electrolysis cells includes a circumferential busbar and a compensating busbar. The compensating busbar is provided below the circumferential busbar. Ribs are provided on both sides of the circumferential busbar and the compensating busbar, and a double-ended bolt is provided between the two ribs. Matching nuts are provided at both ends of the double-ended bolt.

[0006] There are two ribs, and the distance between the two ribs is 220mm. The thickness of the ribs is 30mm.

[0007] The upper end of the rib extends beyond the upper end of the groove busbar, and the lower end of the rib extends beyond the lower end of the compensation busbar.

[0008] The rib is made of high conductivity aluminum alloy plate, and the outside of the rib is provided with an anti-oxidation and wear-resistant layer.

[0009] There are four double-ended bolts, evenly distributed at the four corners of the rib plate.

[0010] The positive and beneficial effects of this utility model are:

[0011] 1. This utility model achieves a short-distance current path by setting two ribs between the circumferential busbar and the compensating busbar, reducing the work done by current transmission and greatly reducing the current transmission consumption on the circumferential busbar. Each trough reduces idle power consumption by about 600 kWh per day, greatly reducing production costs.

[0012] 2. The rib plate of this utility model is made of high conductivity aluminum alloy plate, which has a conductivity 35% higher than that of traditional aluminum plate. This not only ensures good conductivity but also extends the service life of the busbar and reduces other additional losses.

[0013] 3. This utility model has the advantages of flexible movement and convenient assembly and disassembly by setting double-headed bolts at the four corners of the two ribs. When in use, multiple connections can be made in the same slot, and it can be reused repeatedly, reducing the labor intensity of employees. Attached Figure Description

[0014] Figure 1 This is a diagram showing the usage state of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Wherein: 1-slot circumferential busbar, 2-compensating busbar, 3-rib plate, 4-double-ended bolt, 5-nut. Detailed Implementation

[0017] The present invention will be further explained and described below with reference to the accompanying drawings:

[0018] See the example. Figures 1-2 A short-circuit busbar energy-saving device for aluminum electrolysis cells includes a circumferential busbar 1 and a compensating busbar 2. The compensating busbar 2 is provided below the circumferential busbar 1. Ribs 5 are provided on both sides of the circumferential busbar 1 and the compensating busbar 2, and double-ended bolts 4 are provided between the two ribs 5. Matching nuts 5 are provided at both ends of the double-ended bolts 4.

[0019] There are two ribs 5, and the distance between the two ribs 5 is 220mm. The thickness of the ribs 5 is 30mm.

[0020] The upper end of the rib 5 extends beyond the upper end of the groove busbar 1, and the lower end of the rib 5 extends beyond the lower end of the compensation busbar 2.

[0021] Rib 5 is made of high conductivity aluminum alloy plate. An anti-oxidation and wear-resistant layer is set on the outside of rib 5, which can not only ensure good conductivity, but also extend the service life of the short circuit device.

[0022] Four double-headed bolts 4 are evenly distributed at the four corners of the rib plate 5, so that the rib plate 5 is fixedly connected to the groove circumferential busbar 1 and the compensation busbar 2.

[0023] In the above description, the two ribs are connected to the busbar and the compensation busbar at both ends by double-ended bolts, respectively, to achieve a short-distance current path, reduce the work done by current transmission, and achieve the purpose of reducing the short-circuit point waste.

[0024] As described above, when in use, multiple connections can be made to the same cell without damaging the main busbar of the electrolytic cell, and it can be connected to the operating cell.

[0025] In the above description, when the rib plate is connected to the busbar around the tank and the compensation busbar, the connection point must be flat, smooth and free of debris such as aluminum oxide electrolyte blocks.

[0026] In the above description, the aluminum alloy rib is rectangular in shape, with the left and right pieces tightly attached to the sides of the busbar and the compensating busbar, respectively. Two 20*320mm double-ended bolts are used to fix the aluminum alloy rib at each end, allowing the current to travel a short distance from the compensating busbar to the busbar, reducing the distance the current travels and thus reducing the short-circuit waste and production costs.

[0027] This invention enables a short-distance current path by setting two aluminum alloy ribs between the circumferential busbar and the compensating busbar, reducing the work required for current transmission and greatly reducing the power consumption of current transmission on the circumferential busbar. This reduces the daily power consumption of each trough by approximately 600 kWh, significantly lowering production costs.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this invention. It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this invention is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A short-circuit busbar energy-saving device for an aluminum reduction cell, comprising a cell peripheral busbar (1) and a compensation busbar (2), characterized in that: The lower part of the slot peripheral bus (1) is provided with a compensation bus (2), the two sides of the slot peripheral bus (1) and the compensation bus (2) are respectively provided with a rib plate (3), and a double head bolt (4) is arranged between the two rib plates (3), and the two ends of the double head bolt (4) are respectively provided with a matched nut (5).

2. The short-circuit bus bar consumption reduction device for an aluminum reduction cell according to claim 1, characterized in that: The rib plate (3) is two, and the distance between the two rib plates (3) is 220mm, and the thickness of the rib plate (3) is 30mm.

3. The short-circuit bus bar consumption reduction device for an aluminum reduction cell according to claim 1, characterized in that: The upper end of the rib plate (3) extends out of the upper end of the slot peripheral bus (1), and the lower end of the rib plate (3) extends out of the lower end of the compensation bus (2).

4. The short-circuit bus bar consumption reduction device for an aluminum reduction cell of claim 1, characterized in that: The rib plate (3) is made of high conductivity aluminum alloy plate, and the outer part of the rib plate (3) is provided with an anti-oxidation wear-resistant layer.

5. The short-circuit bus bar consumption reduction device for an aluminum reduction cell of claim 1, characterized in that: The double head bolt (4) is four, which is evenly distributed at the four corners of the rib plate (3), so that the rib plate (3) is fixedly connected with the slot peripheral bus (1) and the compensation bus (2).

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