Busbar configuration structure of horizontal double-sided power-in aluminum electrolysis cell

Abstract

The invention discloses a bus configuration structure of a horizontal double-sided power-feeding aluminum electrolysis cell, the interior of an electrolysis cell body is divided into a left electrolysis cell and a right electrolysis cell, one side of the left electrolysis cell is provided with a plurality of forward power-feeding column buses, and one side of the right electrolysis cell is provided with a plurality of reverse power-feeding column buses; the forward power-in stand column bus and the reverse power-in stand column bus are arranged on the two sides of the electrolytic cell body respectively, the forward power-in stand column bus is connected with an anode large bus A in the left electrolytic cell, and the reverse power-in stand column bus is connected with an anode large bus B in the right electrolytic cell. Wherein the cell periphery bus of the left electrolytic cell is connected with the forward electricity-feeding upright post buses of the other electrolytic cells, and the cell periphery bus of the right electrolytic cell is connected with the reverse electricity-feeding upright post buses of the other electrolytic cells. According to the structure, when electricity enters the two sides of the electrolytic cell at the same time, a bus system can operate stably and safely, and meanwhile the purpose of reducing series voltage is achieved.

Description

Technical Field

[0001] The invention relates to a busbar configuration structure of a horizontal double-sided power-inlet aluminum electrolytic cell, belonging to the technical field of aluminum electrolysis. Background Art

[0002] The electrolytic cell is the main equipment of the electrolytic aluminum plant. The busbar around the electrolytic cell is an important path for the DC current to pass through the electrolytic cell. The traditional electrolytic cell structure only supports single-sided power supply. Under normal production conditions, after the DC power flows out from the rectifier, it passes through the electrolytic cell's column busbar, anode, electrolyte, aluminum liquid, cathode, and busbar around the cell in sequence before entering the downstream cell. That is, in an electrolytic cell, the current only enters the electrolytic cell from the upstream side of the electrolytic cell. After the current flows out from both sides of the cathode of the electrolytic cell, it bypasses the busbar around the cell and converges to the column busbar on the downstream side of the electrolytic cell, thereby entering the downstream cell. Under this current operation scheme, the series voltage of the electrolytic workshop is high, the insulation design level is high, and the overall investment cost is high. Summary of the invention

[0003] The purpose of the present invention is to provide a busbar configuration structure for a horizontal double-sided aluminum electrolytic cell. When the horizontal double-sided aluminum electrolytic cell is used, the series voltage can be reduced while ensuring the same operating current as the single-sided electrolytic cell, thereby reducing the insulation level and the investment cost.

[0004] The technical solution of the present invention is: a busbar configuration structure of a horizontal double-sided power-inlet aluminum electrolytic cell, comprising an electrolytic cell body, wherein the electrolytic cell body is internally divided into a left electrolytic cell and a right electrolytic cell, a plurality of forward power-inlet column busbars are arranged on one side of the left electrolytic cell, a plurality of reverse power-inlet column busbars are arranged on one side of the right electrolytic cell, the forward power-inlet column busbars and the reverse power-inlet column busbars are arranged on both sides of the electrolytic cell body, respectively, the forward power-inlet column busbars are connected to the anode busbar A in the left electrolytic cell, the reverse power-inlet column busbars are connected to the anode busbar B in the right electrolytic cell, and a slot-circumferential busbar is further arranged around the electrolytic cell body, wherein the slot-circumferential busbars of the left electrolytic cell are connected to the forward power-inlet column busbars of other electrolytic cells, and the slot-circumferential busbars of the right electrolytic cell are connected to the reverse power-inlet column busbars of other electrolytic cells; The busbars around the left electrolytic cell are divided into multiple units with the same number of positive power supply column busbars. One end of each unit is connected to multiple groups of cathode currents of the left electrolytic cell, and the other end is connected to a positive power supply column busbar of the next electrolytic cell; the busbars around the right electrolytic cell are divided into multiple units with the same number of reverse power supply column busbars. One end of each unit is connected to multiple groups of cathode currents of the right electrolytic cell, and the other end is connected to a reverse power supply column busbar of the previous electrolytic cell; The number of positive power supply column busbars: the number of reverse power supply column busbars = forward current I 1: Reverse current I 2.

[0005] In the aforementioned horizontal double-sided aluminum electrolytic cell busbar configuration structure, the cathode current quantity of the left electrolytic cell: the cathode current quantity of the right electrolytic cell = the forward current I 1: Reverse current I 2.

[0006] In the aforementioned horizontal double-sided power-inlet aluminum electrolytic cell busbar configuration structure, the cell-circumferential busbar of the left electrolytic cell is connected to the positive power-inlet column busbar of the next electrolytic cell, and the cell-circumferential busbar of the right electrolytic cell is connected to the reverse power-inlet column busbar of the previous electrolytic cell.

[0007] In the aforementioned busbar configuration structure of a horizontal double-sided aluminum electrolytic cell, the interior of the electrolytic cell body is divided into a left electrolytic cell and a right electrolytic cell by an insulating baffle.

[0008] Beneficial effects of the present invention: Compared with the prior art, the electrolytic cell of the present invention supports double-sided power supply by respectively arranging a forward power supply column busbar and a reverse power supply column busbar on both sides, and adjusting the connection structure of the busbars around the cell, that is, the current can enter the anode busbar from both sides of the electrolytic cell at the same time, and then flow through the anode, electrolyte, aluminum liquid, and cathode in sequence. After the current flows out from both sides of the cathode of the electrolytic cell, it passes through a shorter path and enters the column busbars on both sides of the electrolytic cell nearby, and then flows into the next cell. When using this horizontal double-sided power supply aluminum electrolytic cell, while ensuring the same operating current as the single-sided power supply electrolytic cell, the series voltage can be reduced, thereby reducing the insulation level and reducing the investment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a simplified diagram of the busbar configuration around the electrolytic cell.

[0010] Figure numerals: 1-forward power inlet column busbar, 2-reverse power inlet column busbar, 3-anode busbar A, 4-anode busbar B, 5-insulating baffle, 6-electrolytic cell body, 7-cell surrounding busbar. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0012] Embodiments of the present invention: Technical solution of the present invention: A busbar configuration structure of a horizontal double-sided power-inlet aluminum electrolytic cell, comprising an electrolytic cell body 6, wherein the electrolytic cell body 6 is internally divided into a left electrolytic cell and a right electrolytic cell, a plurality of forward power-inlet column busbars 1 are arranged on one side of the left electrolytic cell, and a plurality of reverse power-inlet column busbars 2 are arranged on one side of the right electrolytic cell, the forward power-inlet column busbar 1 and the reverse power-inlet column busbar 2 are respectively arranged on both sides of the electrolytic cell body 6, the forward power-inlet column busbar 1 is connected to the anode busbar A3 in the left electrolytic cell, and the reverse power-inlet column busbar 2 is connected to the anode busbar B4 in the right electrolytic cell, and a slot busbar 7 is further arranged around the electrolytic cell body 6, wherein the slot busbar 7 of the left electrolytic cell is connected to the forward power-inlet column busbar 1 of other electrolytic cells, and the slot busbar 7 of the right electrolytic cell is connected to the reverse power-inlet column busbar 2 of other electrolytic cells.

[0013] The horizontal double-sided power-inlet aluminum electrolytic cell of the present invention has power-inlet column busbars on both sides. The current enters the anode busbar simultaneously through the power-inlet column busbars on both sides of the electrolytic cell, and then flows through the anode, electrolyte, aluminum liquid, and cathode in sequence. The current flowing out from both sides of the cathode of the electrolytic cell passes through a shorter path and flows into the column busbars closest to both sides of the electrolytic cell, thereby entering the next electrolytic cell.

[0014] The busbar 7 around the left electrolytic cell is divided into a plurality of units equal in number to the forward power supply column busbar 1, one end of each unit is connected to multiple groups of cathode currents of the left electrolytic cell, and the other end is connected to a forward power supply column busbar 1 of the next electrolytic cell; the busbar 7 around the right electrolytic cell is divided into a plurality of units equal in number to the reverse power supply column busbar 2, one end of each unit is connected to multiple groups of cathode currents of the right electrolytic cell, and the other end is connected to a reverse power supply column busbar 2 of the previous electrolytic cell.

[0015] When the current intensity entering the two sides of the electrolytic cell is not equal (i.e. the forward current I 1≠Reverse current I 2), at this time, according to the current intensity ratio on both sides, the number of power-input column busbars on both sides of the electrolytic cell, the number of cathode current groups and the position of the insulating baffle 5 in the electrolytic cell are redistributed. The specific setting method is: the number of positive power-input column busbars 1: the number of reverse power-input column busbars 2 = positive current I 1: Reverse current I 2 = cathode current quantity of the left electrolytic cell: cathode current quantity of the right electrolytic cell.

[0016] The busbars around the left electrolytic cell are connected to the positive power supply column busbar 1 of the next electrolytic cell, and the busbars around the right electrolytic cell are connected to the reverse power supply column busbar 2 of the previous electrolytic cell. Figure 1As shown, the busbar 7 of the left electrolytic cell of No. 2 electrolytic cell is connected to the positive power column busbar 1 of No. 3 electrolytic cell, while the busbar 7 of the right electrolytic cell of No. 2 electrolytic cell is connected to the reverse power column busbar 2 of No. 1 electrolytic cell. This connection form makes the busbar path the shortest path without long detours.

[0017] The inside of the electrolytic cell body 6 is divided into a left electrolytic cell and a right electrolytic cell by an insulating baffle 5, so that the circuit systems and busbar systems on the left and right sides of the electrolytic cell body 6 are independent of each other.

[0018] The present invention takes a specific embodiment as an example. Before and after the busbar configuration scheme is adopted, the total current intensity entering the electrolytic cell remains unchanged, and the total resistance of the electrolytic cell remains unchanged. Assuming that the electrolytic cell has six points of power supply, a total of 48 sets of cathodes, and the current intensity entering from both sides of the electrolytic cell is equal, that is, I 总 = I 1+ I 2, and I 1= I 2. In this busbar configuration scheme, there are three power-inlet column busbars on both sides of each electrolyzer, and the circuit systems and busbar systems on the left and right sides of the electrolyzer are independent of each other.

[0019] Combine the following Figure 1 and Figure 2 This specific embodiment is described to facilitate people to understand the technical solution of the present application, but it does not mean that the technical solution of the present application is only Figure 1 and Figure 2 A structure is shown.

[0020] Figure 1 For the electrolytic cells, I, II, and III are all positive current I Forward current in the direction 1, busbar 1, IV, V, VI are all reverse current I The reverse power column busbar 2 in the 2nd direction, the forward power column busbar 1 of No. I, II, III is connected to the forward current I 1 corresponding anode bus A3, IV, V, VI reverse power column bus 2 connected to reverse current I 2 corresponding to the anode busbar B4, the anode busbar A3 and the anode busbar B4 are not connected. The insulating baffle 5 divides the electrolytic cell into left and right parts, so that the circuit systems and busbar systems on the left and right sides of the electrolytic cell are independent of each other.

[0021] Figure 2 for Figure 1 The schematic diagram of the configuration of the busbar 7 of the electrolytic cell in FIG. AF is a schematic diagram of different busbar 7 routes. Numbers I, II, and III correspond to Figure 1I, II, III positive power column busbar 1, IV, V, VI correspond to Figure 1 IV, V, VI in the figure are reverse power column busbars 2; A1-A24 and B1-B24 represent cathode current groups in the electrolytic cells, and the cathode current groups are divided into cathode current groups of the left electrolytic cell and cathode current groups of the right electrolytic cell by the insulating baffle 5 in the middle of the electrolytic cell.

[0022] In this specific embodiment, as shown in the attached Figure 1 Shown: Forward current I 1 and reverse current I 2 are equal in strength and opposite in direction, with the forward current I 1 After passing through the positive power supply column busbar 1 of No. I, II, and III, it enters the anode busbar A3, and the reverse current I 2 passes through the IV, V, VI reverse power column bus 2 and enters the anode bus B4. I 1 From the anode busbar A3, it passes through the anode, electrolyte, and aluminum liquid on the left side of the electrolytic cell, and reaches the cathode on the left side of the electrolytic cell; the current I 2 From the anode busbar B4, it passes through the anode, electrolyte, and aluminum liquid on the right side of the electrolytic cell, and reaches the cathode on the right side of the electrolytic cell.

[0023] As attached Figure 2 Shown: Current I 1 and I 2 After entering the cathode, the left and right sides are each divided into 24 groups of cathode currents, namely A1-A12, B1-B12, A13-A24, and B13-B24. Among them, A1-A8 enters the No. I forward power column busbar 1 of the next electrolytic cell through the A slot busbar 7, B1-B8 enters the No. II forward power column busbar 1 of the next electrolytic cell through the B slot busbar 7, A9-A12 and B9-B12 enter the No. III forward power column busbar 1 of the next electrolytic cell through the C slot busbar 7; A13-A16 and B13-B16 enter the No. IV reverse power column busbar 2 of the previous electrolytic cell through the D slot busbar 7, A17-A24 enters the No. V reverse power column busbar 2 through the E slot busbar 7, and B17-B24 enters the No. VI reverse power column busbar 2 through the F slot busbar 7.

[0024] The invention design can provide a new busbar configuration mode and structure for the electrolytic cell when a horizontal double-sided power supply aluminum electrolytic cell is used, including the configuration of the power supply column busbar and the busbar 7 around the cell. Although the specific embodiment of the present invention only discusses the case where the power supply current intensity on both sides of the electrolytic cell is equal, the ratio of the power supply current intensity on both sides can be changed according to actual needs. Therefore, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A busbar configuration structure for a horizontal double-sided aluminum electrolytic cell, comprising an electrolytic cell body (6), characterized in that: The electrolytic cell body (6) is internally divided into a left electrolytic cell and a right electrolytic cell. A plurality of forward power supply column busbars (1) are arranged on one side of the left electrolytic cell, and a plurality of reverse power supply column busbars (2) are arranged on one side of the right electrolytic cell. The forward power supply column busbars (1) and the reverse power supply column busbars (2) are arranged on both sides of the electrolytic cell body (6), respectively. The forward power supply column busbars (1) are connected to the anode busbar A (3) in the left electrolytic cell, and the reverse power supply column busbars (2) are connected to the anode busbar B (4) in the right electrolytic cell. A circumferential busbar (7) is also arranged around the electrolytic cell body (6), wherein the circumferential busbar (7) of the left electrolytic cell is connected to the forward power supply column busbars (1) of other electrolytic cells, and the circumferential busbar (7) of the right electrolytic cell is connected to the reverse power supply column busbars (2) of other electrolytic cells. The busbar (7) around the left electrolytic cell is divided into a plurality of units equal in number to the busbar (1) for the forward power supply, and one end of each unit is connected to a plurality of cathode currents of the electrolytic cell on the left, and the other end is connected to a busbar (1) for the forward power supply of the next electrolytic cell; the busbar (7) around the right electrolytic cell is divided into a plurality of units equal in number to the busbar (2) for the reverse power supply, and one end of each unit is connected to a plurality of cathode currents of the electrolytic cell on the right, and the other end is connected to a busbar (2) for the reverse power supply of the previous electrolytic cell; The number of the forward power supply column busbars (1) is equal to the number of the reverse power supply column busbars (2) = forward current I 1: Reverse current I 2.

2. According to claim 1, a horizontal double-sided aluminum electrolytic cell busbar configuration structure is characterized by: The cathode current quantity of the left electrolytic cell: the cathode current quantity of the right electrolytic cell = forward current I 1: Reverse current I 2.

3. According to claim 1, a busbar configuration structure for a horizontal double-sided aluminum electrolytic cell is characterized in that: The busbar (7) around the left electrolytic cell is connected to the positive power supply column busbar (1) of the next electrolytic cell, and the busbar (7) around the right electrolytic cell is connected to the reverse power supply column busbar (2) of the previous electrolytic cell.

4. According to claim 1, a busbar configuration structure for a horizontal double-sided aluminum electrolytic cell is characterized in that: The interior of the electrolytic cell body (6) is divided into a left electrolytic cell and a right electrolytic cell by an insulating baffle (5).

Images