Electrolytic cell jumper

Abstract

An electrolytic cell cross connection device, comprising two groups of movable cell side busbars, the two groups of cell side busbars are arranged on the side of the first electrolytic cell at the power input side and the power output side of the electrolytic cell to be short-circuited, and are arranged along the length direction of the electrolytic cell; the cell side busbars are connected with the power supply busbars above the corresponding electrolytic cell through a plurality of connecting busbars; the two groups of cell side busbars are connected to the cell head busbars at the end of the corresponding electrolytic cell, and the cell head busbars are connected through cross connection busbars; the cell side busbars are composed of a plurality of busbar segments in parallel, and the number of busbar segments connected by the connecting busbars far from the cell head busbars in the circuit length is greater than the number of busbar segments connected by the connecting busbars close to the cell head busbars. The cross connection busbars for circuit cross connection are arranged in the aisle of the electrolytic cell head, which is convenient for arranging longer cross connection busbars to realize cross connection short circuit of multiple electrolytic cells, and can be used for the case of simultaneous failure of multiple electrolytic cells.

Description

Technical Field

[0001] This utility model relates to an electrolytic cell, specifically an electrolytic cell bridging device. Background Technology

[0002] Aluminum electrolysis production lines consist of hundreds of electrolytic cells operating in series, powered centrally, resulting in a massive electrical load. Power outages can severely impact the power system and significantly disrupt electrolysis production. During electrolysis, if a section of the power supply busbar connecting the current path of the electrolytic cells experiences a fault (such as busbar damage or short-circuit failure), preventing current from flowing through the series of electrolytic cells, the entire production line will shut down, causing significant losses. Currently, the method to address such incidents is to bridge the faulty electrolytic cell, connecting it to normal electrolytic cells before and after the faulty cell via conductor busbars to quickly restore power to the series. However, because individual electrolytic cells are very long, multiple conductor busbars need to be spaced along their length to connect them. Existing emergency short-circuiting methods use multiple bridging busbars extending along the arrangement of the electrolytic cells. Limited by the bridging range, this method can only handle incidents affecting a small number of cells. Current technology and equipment are insufficient to handle simultaneous faults in the power supply buses of multiple electrolytic cells (e.g., three or more). Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned defects and provide an electrolytic cell bridging device.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an electrolytic cell bridging device, comprising two sets of movable cell-side busbars, the two sets of cell-side busbars being respectively arranged on the side of the first electrolytic cell on the power inlet side and power outlet side of the electrolytic cell to be short-circuited, and arranged along the length direction of the electrolytic cell; multiple connecting busbars arranged at intervals along the length direction of the cell-side busbars are connected between the cell-side busbars and the power supply busbars above the corresponding electrolytic cell; the two sets of cell-side busbars are respectively connected to the cell head busbars at the ends of the corresponding electrolytic cells, and the two cell head busbars are connected to each other through bridging busbars; the cell-side busbars are composed of multiple busbar segments connected in parallel, and the number of busbar segments connected to the connecting busbars that are farther away from the cell head busbars in terms of circuit length is greater than the number of busbar segments connected to the connecting busbars that are closer to the cell head busbars.

[0005] The multiple busbar segments of the slot-side busbar are spaced apart.

[0006] Each group of cell-side busbars has one cell-side busbar arranged on the side of the electrolytic cell, or has two cell-side busbars arranged on both sides of the electrolytic cell respectively.

[0007] The tank-side busbar is connected to the tank-head busbar via a busbar.

[0008] One end of the busbar is connected to the middle of the side busbar, and the other end is connected to the head busbar.

[0009] The connecting busbar has an upper crimping block at one end for connecting to the power supply busbar, and a lower crimping block at the other end for connecting to the slot-side busbar. The portion of the connecting busbar between the upper crimping block and the lower crimping block is provided with a flexible connection.

[0010] The multiple connecting busbars have different lengths and cross-sectional sizes.

[0011] The aforementioned bridging busbar is provided with multiple detachable connected sections.

[0012] The beneficial effects of this utility model are: the power supply bus is connected to the side of the electrolytic cell by multiple connecting busbars, and the cell side busbar extends along its length direction. The current is led out to the cell head busbar at the end of the electrolytic cell through the cell side busbar. The bridging busbar for circuit bridging can be arranged in the passage of the cell head of the electrolytic cell. It does not need to be set too high, which makes it easy to set a longer bridging busbar to achieve bridging short circuits for multiple electrolytic cells. It can be used in the case of simultaneous failure of multiple electrolytic cells. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of one arrangement of the busbar on the side of the channel according to this utility model.

[0015] Figure 3 This is a schematic diagram of another configuration of the busbar on the side of the channel according to this utility model.

[0016] Figure 4 This is a schematic diagram of the connection method of the busbar of this utility model.

[0017] The markings in the diagram are: 1. Electrolytic cell, 2. Power supply busbar, 3. Cell side busbar, 4. Connecting busbar, 5. Combination busbar, 6. Cell head busbar, 7. Jumper busbar, 8. Connector, 9. Upper clamping block, 10. Lower clamping block. Detailed Implementation

[0018] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. The specific contents listed in the following embodiments are not limited to the technical features necessary to solve the technical problem described in the claims. Furthermore, the listed embodiments are merely a part of this utility model, and not all of them.

[0019] Figure 1The diagram shows a sequence of eight electrolytic cells. When multiple electrolytic cells fail simultaneously, an electrolytic cell bridging device is needed to short-circuit them. This invention's electrolytic cell bridging device includes two sets of movable cell-side busbars 3, respectively positioned on the side of the first electrolytic cell on the power inlet and power outlet sides of the cell requiring short-circuiting. As shown, the six middle electrolytic cells 1 are the faulty cells requiring short-circuiting. The left side is the power inlet side, and the right side is the power outlet side. A cell-side busbar 3 is located on the side of each of the leftmost and rightmost electrolytic cells. The cell-side busbars 3 are arranged along the length of the electrolytic cell, essentially parallel to the power supply busbar 2 extending along its length above the cell. Multiple connecting busbars 4 connect the cell-side busbars 3 and the power supply busbar 2, spaced apart along the length of the cell-side busbars 3. When arranging the connecting busbar 4, care should be taken to avoid the existing conductive busbars on the power supply busbar 2 of the electrolytic cell. For example, the leftmost electrolytic cell and the two electrolytic cells on the right in the figure show the power supply busbar and the existing conductive busbar; interference should be avoided when setting the connecting busbar 4. The two sets of cell-side busbars 3 are respectively connected to the cell head busbar 6 at the end of the corresponding electrolytic cell. The two cell head busbars on the power inlet side and the power outlet side are connected by a bridging busbar 7.

[0020] like Figure 2 As shown, the cell-side busbar 3 extends towards the end of the electrolytic cell and connects to the cell-head busbar 6. Due to the long length of the electrolytic cell, multiple connecting busbars 4 are spaced apart along the length of the power supply busbar, with significant differences in distance from the cell-head busbar 6. To maintain a balanced current distribution, it is necessary to control the resistance of the circuit between each connecting busbar and the bridging busbar to be approximately equal. The multiple connecting busbars 4 have different lengths and cross-sectional sizes.

[0021] The slot-side busbar 3 is composed of multiple busbar segments connected in parallel, with these segments spaced apart. The number of busbar segments connected to the connecting busbar 4, which is farther from the slot head busbar 6 in terms of circuit length, is greater than the number of busbar segments connected to the connecting busbar 4, which is closer to the slot head busbar. For example… Figure 2 In the structure shown, the uppermost connecting busbar 4 is the furthest away, connecting the most busbar segments to achieve the minimum resistance through the largest circuit cross-section. Conversely, the lowermost connecting busbar is the closest, connecting the fewest busbar segments to achieve a relatively large resistance through a relatively small circuit cross-section. As the circuit length decreases, the number of busbar segments connected to each connecting busbar is successively reduced, ensuring that the resistance of the circuits containing each connecting busbar is approximately equal, thus maintaining a balanced current distribution.

[0022] exist Figure 2 In the illustrated embodiment, the cell-side busbar 3 extends towards the end of the electrolytic cell and connects to the cell head busbar 6. The cell-side busbar 3 can also be configured as follows: Figure 3The circuit is connected to the corresponding electrolytic cell head bus 6 via bus 5. Bus 5 can be connected to the middle of the cell-side bus 3, reducing the difference in circuit length between the circuits of each connecting bus. Figure 3 In the embodiment shown, the connecting busbars 3 on the top and bottom sides are the furthest apart in terms of circuit length, and therefore connect to more busbar segments 301, while the connecting busbars in the middle are closer apart in terms of circuit length, and therefore connect to a relatively smaller number of busbar segments 301.

[0023] The busbar 3 on the side of the channel can be as follows Figure 2 As shown, it is only installed on one side of electrolytic cell 1, or it can be as follows: Figure 3 As shown, cell-side busbars 3 are installed on both sides of the electrolytic cell. Installing cell-side busbars 3 on both sides of the electrolytic cell can obtain a larger circuit cross-section, which is suitable for situations with higher current requirements.

[0024] exist Figure 2 In the illustrated embodiment, the cell-side busbar 3 extends towards the end of the electrolytic cell and connects to the cell head busbar 6. The cell-side busbar 3 can also be configured as follows: Figure 3 The circuit is connected to the corresponding electrolytic cell head bus 6 via bus 5. One end of bus 5 is connected to the cell head bus 6, and the other end is connected to the middle of the cell side bus 3, reducing the difference in circuit length between the circuits of each connecting bus. Figure 3 In the embodiment shown, the connecting busbars 3 on the top and bottom sides are the furthest apart in terms of circuit length, and therefore connect to more busbar segments 301, while the connecting busbars in the middle are closer apart in terms of circuit length, and therefore connect to a relatively smaller number of busbar segments 301.

[0025] The side busbar 3 is movable and can be positioned between two adjacent electrolytic cells when needed. It is placed next to the electrolytic cells and must be insulated from the ground and the cell body. For example... Figure 4 As shown, an upper crimping block 9 and a lower crimping block 10 are respectively provided at both ends of the connecting busbar 3. The upper crimping block 9 is crimped to the power supply busbar 2, and the lower crimping block 10 is crimped to or welded to the slot-side busbar 3. A flexible connection is provided in the part of the connecting busbar 3 located between the upper crimping block 9 and the lower crimping block 10, so that the installation angle can be flexibly adjusted according to the relative position of the slot-side busbar 3 and the power supply busbar 2.

[0026] The aforementioned crossover busbar 7, as Figure 2 The setup includes multiple detachable sections. The number of sections required is determined by the number of electrolytic cells that need to be short-circuited and cut off. Different sections are connected by connectors 8. The bridging busbar 7 can be constructed with multiple parallel sections, and the number of parallel sections can be adjusted to accommodate different current requirements.

[0027] The above description of specific embodiments is only for the purpose of helping to understand the technical concept and core idea of ​​this utility model. Although specific preferred embodiments have been used to describe and illustrate the technical solution, they should not be construed as limiting the utility model itself. Those skilled in the art can make various changes in form and detail without departing from the technical concept. These easily conceived changes or substitutions should all be covered within the protection scope of this utility model.

Claims

1. An electrolytic cell bridging device, characterized in that: It includes two sets of movable tank-side busbars (3), which are respectively set on the side of the first electrolytic cell on the power inlet and power outlet sides of the electrolytic cell that need to be short-circuited, and are arranged along the length of the electrolytic cell; multiple connecting busbars (4) are connected between the tank-side busbars (3) and the power supply busbars (2) above the corresponding electrolytic cell (1); the two sets of tank-side busbars (3) are respectively connected to the tank head busbars (6) at the end of the corresponding electrolytic cell, and the two tank head busbars are connected by a bridging busbar (7); the tank-side busbars (3) are composed of multiple busbar segments connected in parallel, and the number of busbar segments connected by the connecting busbars (4) that are farther away from the tank head busbars (6) in terms of circuit length is greater than the number of busbar segments connected by the connecting busbars that are closer to the tank head busbars.

2. The electrolytic cell bridging device as described in claim 1, characterized in that: The multiple busbar segments of the slot-side busbar (3) are spaced apart.

3. The electrolytic cell bridging device as described in claim 1, characterized in that: Each group of cell-side busbars has one cell-side busbar arranged on the side of the electrolytic cell, or has two cell-side busbars arranged on both sides of the electrolytic cell respectively.

4. The electrolytic cell bridging device as described in claim 1, characterized in that: The tank-side busbar (3) is connected to the tank-head busbar (6) via the busbar (5).

5. The electrolytic cell bridging device as described in claim 4, characterized in that: One end of the busbar (5) is connected to the middle of the side busbar (3), and the other end is connected to the head busbar (6).

6. The electrolytic cell bridging device as described in claim 1, characterized in that: The connecting bus (4) is provided with an upper pressure block (9) for connecting the power supply bus (2) at one end and a lower pressure block (10) for connecting the slot side bus (3) at the other end. The part of the connecting bus located between the upper pressure block and the lower pressure block is provided with a flexible connection.

7. The electrolytic cell bridging device as described in claim 1, characterized in that: The multiple connecting busbars (4) have different lengths and cross-sectional sizes.

8. The electrolytic cell bridging device as described in claim 1, characterized in that: The aforementioned crossover busbar (7) is provided with multiple detachable connected segments.

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