CN219174639U - Conductive cross beam and cathode plate assembly comprising same - Google Patents

Abstract

The utility model discloses an electric beam and a cathode plate assembly comprising the same, wherein the electric beam comprises a first copper bar and a second copper bar which are used for clamping a cathode plate and are oppositely arranged, the first copper bar and the second copper bar respectively comprise a lap joint part and a clamping part in sequence, a third copper bar is clamped and fixed between the lap joint parts of the two copper bars, and the lap joint parts of the first copper bar and the second copper bar and the end face of the third copper bar, which faces the cathode plate, jointly form a lap joint surface used for contacting with a busbar; the clamping parts of the first copper bar and the second copper bar form at least two cathode plate clamping ends, and each cathode plate clamping end comprises a first stainless steel sheet and a second stainless steel sheet which are welded on the inner sides of the first copper bar and the second copper bar opposite to each other and are used for being attached to the cathode plate. The conductive cross beam increases the lap joint area of the conductive cross beam and the busbar, so that the current carrying stability of the lap joint part of the conductive cross beam and the busbar is improved, and the current distribution uniformity of the large-area cathode plate can be improved by arranging at least two cathode plate clamping ends.

Description

Conductive cross beam and cathode plate assembly comprising same

Technical Field

The utility model relates to the technical field of electrolytic preparation of manganese metal, in particular to an electric beam and a cathode plate assembly comprising the same.

Background

Under the large background of low carbon and environmental protection, the industry of electrolytic manganese metal with high pollution and energy consumption index is under pressure of industrial upgrading. Meanwhile, the development of new energy industry also puts forward higher quality requirements on the production of manganese. In this context, intensive and clean production is a necessary development path for the electrolytic manganese metal industry. The large-tank electrolysis is key to realize the purpose, and the number of cathode plates can be greatly reduced by adopting the large-tank electrolysis, the occupied area of an electrolysis tank workshop is reduced, and the amount of waste water and the amount of waste polishing liquid can be greatly reduced. One of the core components for realizing large-cell electrolysis is a large-area cathode plate (a large cathode plate for short). And the optimum current density value of the cathode plate is about 320A/m in the electrolytic process according to the requirements of the electrolytic manganese process ² As the cathode plate area increases, so does the current required for electrolysis. And the conductive cross beam matched with the cathode plate needs to bear the current carrying required by electrolysis.

Since the current mainstream manganese electrolysis technology generally uses small cathode plates 500mm by 666mm, the current carrying capacity of the conductive cross beam used is limited. For example, patent document CN204550733U discloses a conductive cross beam for a cathode plate, which includes a pair of clamping arms formed by bending a piece of copper bar, one end of which serves as a lap joint end with a busbar, and a conductive clip for clamping the cathode plate is formed in the middle of the clamping arm.

The inventor of the application finds that the conductive cross beam is only suitable for the small cathode plate, and when the plate surface of the cathode plate is obviously increased, for example, to 1000mm 1219mm, the conductive cross beam is used, the current carrying stability at the joint of the conductive cross beam and the busbar is reduced, the current distribution uniformity of the cathode plate is poor, and the problems directly affect the production efficiency and energy consumption of manganese electrolysis, and the cost is increased.

In view of this, there is a need for improvements in conductive beams that are designed to be suitable for large area cathode plate electrolysis.

Disclosure of Invention

To achieve the above object, a first aspect of the present utility model provides a conductive beam including a first copper bar and a second copper bar for sandwiching a cathode plate and disposed opposite to each other, wherein,

the first copper bar and the second copper bar sequentially comprise opposite lap joint parts and clamping parts along the length direction, a third copper bar is clamped and fixed between the lap joint parts of the first copper bar and the second copper bar, and the lap joint parts of the first copper bar, the second copper bar and the third copper bar face the end face of the cathode plate to form a lap joint surface for contacting with the busbar together;

the clamping parts of the first copper bar and the second copper bar form at least two cathode plate clamping ends, and each cathode plate clamping end comprises a first stainless steel sheet and a second stainless steel sheet which are welded on the inner sides of the first copper bar and the second copper bar opposite to each other and are used for being attached to the cathode plate.

In some embodiments, the conductive beam has one of the following structures:

the lap joint parts of the first copper bar and the second copper bar and the end face of the third copper bar, which faces the cathode plate, are positioned on the same plane, so that the formed lap joint surface is of a plane structure;

the lap joint parts of the first copper bar and the second copper bar and the end face of the third copper bar, which faces the cathode plate, form a wedge-shaped structure together;

the end face of the third copper bar, which faces the cathode plate, is concaved inwards, and the lap joint part of the first copper bar and the second copper bar faces the end face of the cathode plate, so that the formed lap joint surface is of a concave structure.

In some embodiments, the clamping portions of the first copper bar and the second copper bar form a distal cathode plate clamping end and a proximal cathode plate clamping end, the distal cathode plate clamping end being located at an end of the first copper bar and the second copper bar remote from the overlap portion, the proximal cathode plate clamping end being located between the distal cathode plate clamping end and the overlap portion.

In some embodiments, a load-bearing housing is provided externally, the load-bearing housing surrounds the conductive beam, and a bottom of the load-bearing housing is formed with a slit for the cathode plate to pass through at a portion corresponding to the clamping portion of the first copper bar and the second copper bar, and the bottom of the load-bearing housing exposes the faying surface.

In some embodiments, the load bearing housing includes a top wall covering an upper portion of the conductive beam, two first side walls covering opposite outer side sides of the first and second copper bars of the conductive beam, respectively, two second side walls covering both ends of the first and second copper bars of the conductive beam, respectively, and a bottom wall covering bottoms of the first and second copper bar clamping portions of the conductive beam but exposing the faying surface, the bottom wall being formed with a slit for the cathode plate to pass through.

In some embodiments, the bearing shell is provided with fasteners penetrating the clamping portions of the first copper bar and the second copper bar and the two first side walls of the bearing shell.

In some embodiments, a temperature sensor is mounted on the opposite inner side of the first copper bar and the second copper bar for detecting the temperature of the first copper bar and the second copper bar lap joint.

A second aspect of the utility model provides a cathode plate assembly comprising a cathode plate and the aforementioned electrically conductive cross-beam, wherein the cathode plate is secured at its upper portion to at least two cathode plate connection ends of the electrically conductive cross-beam by welding.

In some embodiments, the first and second stainless steel sheets are welded to the top end of the cathode plate and to the face of the cathode plate opposite the bottom of the first and second stainless steel sheets.

Advantageous effects

The utility model provides a conductive cross beam, which is characterized in that a third copper bar is welded and clamped between two copper bars, and the three copper bars face the end face of a cathode plate to jointly form a lap joint surface for contacting with a busbar, so that the lap joint area of the conductive cross beam and the busbar is increased, and the current carrying stability of the lap joint part of the conductive cross beam and the busbar is improved. And the third copper bar is welded and clamped between the two copper bars, so that the width of the conductive cross beam is not substantially increased, and the requirements of the electrolytic manganese process are met.

In addition, the conductive cross beam is provided with at least two clamping ends of the cathode plate, so that the current distribution uniformity of the large-area cathode plate in the electrolysis process can be improved.

Drawings

FIG. 1 is a schematic view of a conductive beam structure according to the present utility model;

FIG. 2 shows a schematic view of a cathode plate clamping end, e.g., a proximal cathode plate clamping end, of a conductive beam provided by the present utility model;

FIG. 3 is a schematic view showing the structure of a second faying surface of the conductive beam provided by the present utility model;

FIG. 4 is a schematic view showing the structure of a third faying surface of the conductive beam provided by the present utility model;

FIG. 5 is a schematic view showing the structure of a fourth faying surface of the conductive beam provided by the present utility model;

FIG. 6 is a schematic view showing the structure of a fifth faying surface of the conductive beam provided by the present utility model;

FIG. 7 is a schematic view showing the structure of a sixth faying surface of the conductive beam provided by the present utility model;

fig. 8 shows a schematic view of a conductive beam provided with a load bearing housing externally according to the utility model;

fig. 9 shows a schematic structural view of a cathode plate assembly provided by the utility model.

Detailed Description

For a clearer understanding of the technical solutions, objects and effects of the present utility model, specific embodiments of the present utility model will now be described with reference to the accompanying drawings.

The first aspect of the present utility model provides a conductive beam, which may be applied to electrolytic manganese metal, wherein a cathode plate is fixed at the lower end of the conductive beam, and in the electrolytic process, the cathode plate is inserted into an electrolyte, and one end of the conductive beam, namely, a lap joint part of a first copper bar, a second copper bar and a third copper bar mentioned later, or a lap joint end of the conductive beam is lap-jointed with a busbar through a lap joint surface to realize electrical connection, so that a large current is led to the conductive beam and then to the cathode plate surface to electrolyze manganese metal, and the manganese metal is enriched on the cathode plate surface.

Fig. 1 shows a schematic view of a conductive beam provided by the present utility model, in which, for convenience in representing the structure of the conductive beam, the conductive beam is shown in the figure in an inverted manner, that is, the direction in which the conductive beam shown in fig. 1 is placed is opposite to the direction in which the conductive beam is actually applied, in other words, the conductive beam is connected to a cathode plate above in fig. 1. Fig. 2 shows a schematic view of a bottom view of a cathode plate clamping end of a conductive beam provided by the utility model.

As shown in fig. 1-2, the conductive cross beam 1 may include a first copper bar 1A and a second copper bar 1B that are used for clamping a cathode (not shown in the figure) plate and are oppositely arranged, where each of the first copper bar 1A and the second copper bar 1B includes an opposite lap joint portion 2 and a clamping portion 3 in sequence along a length direction, a third copper bar 1C is clamped and fixed between the lap joint portions 2 of the first copper bar 1A and the second copper bar 1B, and the lap joint portions 2 of the first copper bar 1A, the second copper bar 1B and an end surface of the third copper bar 1C facing the cathode plate together form a lap joint surface 200 for contacting with a busbar (not shown in the figure); the lap joint 2 of the first copper bar 1A and the second copper bar 1B and the third copper bar 1C together form a lap joint end of the conductive cross beam 1.

The clamping portions 3 of the first copper bar 1A and the second copper bar 1B form at least two cathode plate clamping ends 10, and each cathode plate clamping end 10 comprises a first stainless steel sheet 4A and a second stainless steel sheet 4B welded on opposite inner sides of the first copper bar 1A and the second copper bar 1B respectively for being attached to a cathode plate.

According to the conductive cross beam 1 provided by the utility model, the third copper bar 1C is welded and clamped between the two copper bars (the first copper bar 1A and the second copper bar 1B), and the end surfaces of the three copper bars facing the cathode plate jointly form the lap joint surface for contacting with the busbar, so that the lap joint area of the conductive cross beam 1 and the busbar is increased, and the current carrying stability of the lap joint part of the conductive cross beam and the busbar is improved. Moreover, the third copper bar 1C is welded and clamped between the two copper bars, so that the width of the conductive cross beam 1 is not substantially increased, and the requirements of the electrolytic manganese process are met.

In addition, by providing at least two cathode plate holding ends 10, the current distribution uniformity of the large-area cathode plate during electrolysis can be improved.

Moreover, by attaching the stainless steel sheets 4A, 4B on the opposite inner sides of the first copper bar 1A and the second copper bar 1B, a composite metal clamping end for clamping the cathode plate is formed, which is more beneficial to ensuring the stability of heavy current carrying when the cathode plate with a large area is used for electrolysis. The bonding of the copper bars and the stainless steel sheets can be realized through a welding process.

The length of the third copper bar 1C may be selected according to the actual lap joint requirement with the busbar, and is not particularly limited herein. The first copper bar 1A, the second copper bar 1B and the three copper bars 1C can be fixed through welding.

In one embodiment, as shown in fig. 1, the end surfaces of the first copper bar 1A, the second copper bar 1B, and the third copper bar 1C facing the cathode plate may be located on the same plane, so that the formed lap surface 200 is a planar structure, and in this embodiment, the lap surface of the conductive beam and the busbar is planar, and the current-carrying stability at the lap joint is improved by increasing the lap area.

As a modification of the above-described planar structure of the joint surface, as shown in fig. 3, the outer sides of the first copper bar 1A and the second copper bar 1B at the joint surface may be rounded so as to be in lap joint with the busbar. Alternatively, as shown in fig. 4, the first copper bar 1A and the second copper bar 1B have an inclination angle that is folded toward the faying surface at the outer side of the faying surface, thereby forming a wedge structure. This is also advantageous for the overlap of the overlap end with the busbar.

Preferably, in another embodiment, as shown in fig. 5, the end face of the third copper bar 1C facing the cathode plate is recessed from the end faces of the first copper bar 1A and the second copper bar 1B facing the cathode plate, so that the formed faying surface 200 is a concave structure. Correspondingly, the busbar side is provided with a convex structure corresponding to the concave structure. Therefore, the concave structure can form knife-blade connection with the busbar, and the current-carrying stability of the lap joint part is further improved.

Similarly, as a modification of the above embodiment, in the formed concave structure, the side surfaces of the first copper bar 1A and the second copper bar 1B facing the third copper bar 1C may have a certain inclination angle as shown in fig. 6, or may have a rounded chamfer as shown in fig. 7, which is more advantageous in smooth lap joint with the busbar.

In one embodiment of the present utility model, continuing to refer to fig. 1, the clamping portions 3 of the first copper bar 1A and the second copper bar 1B form a distal cathode plate clamping end 11 and a proximal cathode plate clamping end 12, the distal cathode plate clamping end 11 being located at the end of the first copper bar 1A and the second copper bar 1B remote from the lap joint of the first copper bar 1A and the second copper bar 1B, the proximal cathode plate clamping end 12 being located between the distal cathode plate clamping end 11 and the lap joint 2. In an example, the distal cathode plate clamping end 11 and the proximal cathode plate clamping end 12 may be located at both ends of the clamping portion 3 of the first copper bar 1A and the second copper bar 1B, respectively, and the proximal cathode plate clamping end 12 is closer to the lap portion of the first copper bar 1A and the second copper bar 1B or to the third copper bar 1C than the distal cathode plate clamping end 11.

By providing two clamping ends, namely a distal cathode plate clamping end 11 and a proximal cathode plate clamping end 12, the process complexity brought by welding more clamping ends can be avoided on the basis that the current distribution uniformity of a large-area cathode plate can be improved. In particular, for 1000mm 1219mm sized cathode plates, it is particularly suitable to provide two distal cathode plate clamping ends, for example distal cathode plate clamping end 11 and proximal cathode plate clamping end 12.

In some embodiments, as shown in fig. 8, the outer portion of the conductive beam 1 is provided with a bearing housing 5, the bearing housing 5 surrounds the conductive beam 1, and the bottom of the bearing housing 5 is formed with a slit 54 for the cathode plate to pass through at a portion corresponding to the clamping portion of the first copper bar 1A, the second copper bar 1B, and the bottom of the bearing housing 5 exposes the faying surface 200.

More specifically, the load-bearing housing 5 includes a top wall (not shown in the drawings) covering the top of the conductive cross member 1, two first side walls 51 respectively covering opposite outer side surfaces of the two copper bars (the first copper bar 1A and the second copper bar 1B) of the conductive cross member 1, two second side walls 52 respectively covering both ends of the two copper bars of the conductive cross member 1, and a bottom wall 53 covering the bottoms of the sandwiching portions 3 of the two copper bars but exposing the joint surface 200, the bottom wall 53 being formed with slits 54 for the cathode plate to pass through.

In this way, the utility model provides a bearing shell 5 which can cover and support the conductive beam 1 basically and fully (exposing the joint surface), compared with the reinforcing ribs and semi-surrounding type supporting structures which support the conductive beam from two sides in the prior art, the bearing shell 5 of the cage type frame structure can more effectively protect and support the conductive beam 1, prevent the conductive beam from warping and deforming, provide an elastic space for the conductive beam to freely stretch out and draw back, and adapt to slot impact and release stress.

It will be appreciated that the two first side walls 51 of the load bearing housing 5 are opposite one another and the two second side walls 52 are opposite one another.

In the practical application process, the bearing shell 5 can be manufactured by adopting a forming laser cutting and folding plate integrated forming process, so that the bearing shell has better structural strength.

In particular, it is preferable that the slit 54 is sized to correspond to the thickness dimension of the cathode plate such that both edges of the slit 54 are substantially in contact with the cathode plate when the cathode plate passes through the slit 54, and that structural rigidity of the cathode plate is maintained and flushing is facilitated to prevent formation of thiamine crystals when the conductive cross member 1 clamps the cathode plate for manganese electrolysis.

In this context, the outer side surfaces of the copper bar covered by the two first side walls 51 are understood as surfaces of the copper bar having the largest area along its length. The two ends of the two copper bars covered by the two second side walls 52 can be understood as the two ends of the copper bars in the length direction thereof. The bottom or bottom surface of the conductive beam 1 or copper bar may be understood as the part or surface that clamps the cathode plate. Accordingly, the top or top surface of the conductive beam 1 or copper bar is the portion opposite the bottom or bottom surface of the conductive beam 1 or copper bar remote from the cathode plate.

It will be appreciated that the two second side walls 52 covering both ends of the first and second copper bars of the conductive beam 1 also cover the third copper bar 1C. It should be noted that "cover" herein does not necessarily mean contact. For example, the two first side walls 51 cover opposite outer side surfaces of the two copper bars of the conductive beam 1, the two second side walls 52 cover both ends of the two copper bars of the conductive beam 1, and the bottom wall 53 covers the bottom of the nip 3 are not required to be covered in a direct contact manner. In fact, it is preferable to have a certain clearance between the cover and the covered body, to facilitate their assembly and to provide a free telescopic elastic space for the conductive beam. Illustratively, the walls of the load bearing housing 5 have a gap of 1-2mm from the faces of the conductive beam 1. More specifically, the gap between the top wall of the load-bearing housing 5 and the top of the conductive beam 1 may be 1-2mm; the gap between the first side wall 51 and the opposite outer side surfaces of the two copper bars (the first copper bar and the second copper bar) may be 1-2mm; the gap between the second side wall 52 and the two ends of the two copper bars can be 1-2mm; the bottom clearance between the bottom wall 53 and the clamping portion 3 of the two copper bars may be 1-2mm.

Similar to fig. 1, the conductive beams and the load bearing housing 5 are shown in fig. 8 placed in a direction opposite to their actual use in order to show the respective structures.

In one embodiment, as shown in fig. 8, the load-bearing housing 5 is provided with a fastener 6 penetrating the clamping portion 3 of the first copper bar 1A and the second copper bar 1B of the conductive cross member 1 and the two first side walls 51 of the load-bearing housing 5. The load-bearing housing 5 and the conductive cross member 1 can be fixed to each other by means of the fastening members 6.

In one embodiment, a temperature sensor may be mounted on the opposite inner side of the first copper bar 1A and the second copper bar 1B for detecting the temperature at the lap joint portion of the first copper bar 1A and the second copper bar 1B and the third copper bar 1C.

A second aspect of the present utility model provides a cathode plate assembly, as shown in fig. 9, which may comprise a cathode plate 20 and the aforementioned conductive cross-beam 1, wherein the cathode plate 20 is fixed at its upper portion to at least two cathode plate connection ends 10 of the conductive cross-beam 1 by welding.

In one embodiment, the first and second stainless steel sheets 4A and 4B are welded to the top end of the cathode plate 20 and the plate surface of the cathode plate 20 opposite the bottom of the first and second stainless steel sheets 4A and 4B. The upper and lower double welding is more beneficial to ensuring the large current carrying requirement required by electrolytic manganese.

In practice, the aforementioned fastener 6 also penetrates the cathode plate 20 to more firmly fix it to the conductive beam.

Finally, it should be noted that the above embodiments are only intended to illustrate the technical solution of the utility model and are not limiting. Although the present utility model has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present utility model, which is intended to be covered by the claims.

Claims (9)

1. The conductive cross beam comprises a first copper bar and a second copper bar which are used for clamping a cathode plate and are oppositely arranged, and is characterized in that,

the first copper bar and the second copper bar sequentially comprise opposite lap joint parts and clamping parts along the length direction, a third copper bar is clamped and fixed between the lap joint parts of the first copper bar and the second copper bar, and the lap joint parts of the first copper bar, the second copper bar and the third copper bar face the end face of the cathode plate to form a lap joint surface for contacting with the busbar together;

the clamping parts of the first copper bar and the second copper bar form at least two cathode plate clamping ends, and each cathode plate clamping end comprises a first stainless steel sheet and a second stainless steel sheet which are welded on the inner sides of the first copper bar and the second copper bar opposite to each other and are used for being attached to the cathode plate.

2. The conductive beam of claim 1, wherein the conductive beam has one of the following structures:

the lap joint parts of the first copper bar and the second copper bar and the end face of the third copper bar, which faces the cathode plate, are positioned on the same plane, so that the formed lap joint surface is of a plane structure;

the lap joint parts of the first copper bar and the second copper bar and the end face of the third copper bar, which faces the cathode plate, form a wedge-shaped structure together;

the end face of the third copper bar, which faces the cathode plate, is concaved inwards, and the lap joint part of the first copper bar and the second copper bar faces the end face of the cathode plate, so that the formed lap joint surface is of a concave structure.

3. The conductive beam of claim 1 wherein the clamping portions of the first and second copper bars form a distal cathode plate clamping end and a proximal cathode plate clamping end, the distal cathode plate clamping end being located at an end of the first and second copper bars remote from the overlap portion, the proximal cathode plate clamping end being located between the distal cathode plate clamping end and the overlap portion.

4. The conductive beam according to claim 1, wherein a load-bearing housing is provided outside, the load-bearing housing surrounds the conductive beam, and a slit for the cathode plate to pass through is formed at a bottom of the load-bearing housing at a portion corresponding to a clamping portion of the first copper bar and the second copper bar, and the bottom of the load-bearing housing exposes the lap face.

5. The conductive beam of claim 4 wherein the load bearing housing includes a top wall covering an upper portion of the conductive beam, two first side walls covering opposite outer side sides of the first and second copper bars of the conductive beam, respectively, two second side walls covering both ends of the first and second copper bars of the conductive beam, respectively, and a bottom wall covering bottoms of the first and second copper bar clamping portions of the conductive beam but exposing the faying surface, the bottom wall being formed with a slit for the cathode plate to pass through.

6. The conductive beam of claim 5 wherein the load bearing housing is provided with fasteners extending through the clamping portions of the first and second copper bars and the two first side walls of the load bearing housing.

7. The conductive cross beam of any one of claims 1-6, wherein a temperature sensor is mounted on opposite inner sides of the first and second copper bars for detecting a temperature of the first and second copper bar overlap.

8. A cathode plate assembly comprising a cathode plate and an electrically conductive cross-beam according to any one of claims 1-7, wherein the cathode plate is secured at its upper portion to at least two cathode plate connection ends of the electrically conductive cross-beam by welding.

9. The cathode plate assembly of claim 8, wherein the first and second stainless steel sheets are each welded to a top end of the cathode plate and a face of the cathode plate opposite a bottom of the first and second stainless steel sheets.

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