Composite copper bar conductive cross beam

Abstract

The utility model discloses a composite copper bar conductive cross beam, which belongs to the field of electrolytic manganese dioxide equipment and comprises a composite copper bar, a housing and connecting pieces, one side of the composite copper bar is fixed in the housing, the other side of the composite copper bar extends out of the housing and is provided with a plurality of connecting pieces, and the composite copper bar comprises a copper bar and a stainless steel outer layer coated on the outer surface of the copper bar. The inner wall face of the stainless steel outer layer is tightly attached to the outer surface of the copper bar. The composite copper bar is adopted, the stainless steel outer layer is wrapped outside the copper bar, and the stainless steel outer layer is tightly attached to the copper bar, so that conductivity and strength are guaranteed, the corrosion resistance of the stainless steel outer layer is improved, a conductive contact surface is not prone to oxidation, production energy consumption is reduced, production cost is saved, and the service life is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of electrolytic manganese dioxide equipment, and particularly relates to a composite copper rod conductive crossbeam. Background Technique

[0002] In the production process of electrolytic manganese dioxide, a cathode plate needs to be used. The presence of the cathode plate plays an important role in maintaining the electric field distribution in the electrolytic cell and the stability of the reaction area, which helps to ensure the uniformity and controllability of the entire electrolytic process. The cathode plate is suspended above the electrolytic cell through a conductive crossbeam and is connected to the power busbar.

[0003] The existing conductive crossbeams usually adopt aluminum beams. Since the conductive crossbeams are relatively close to the electrolytic liquid surface, and during the electrolysis process, the electrolyte heats up and acid mist rises to the aluminum beams. When the aluminum beams encounter acid mist, a passivation film is first formed on the surface to prevent the continuous corrosion of the acid mist, but the maintenance time is short. After a long time, pitting, powdery corrosion, etc. will occur on the surface of the aluminum beams, resulting in an increase in resistance, an increase in energy consumption, and also affecting the uniform distribution of current on the electrodes, leading to a decrease in electrolysis efficiency and the quality of the product being affected. During the operation of the electrolytic cell, the conductive crossbeam needs to bear a certain weight and stress, and the acid mist corrosion will also affect the service life of the conductive crossbeam. And currently, the connection method between the cathode plate and the conductive crossbeam is to open a groove for clamping the cathode plate at the bottom of the aluminum beam. The cathode plate needs to be sequentially inserted into the groove from both ends of the aluminum beam. If the middle cathode plate is damaged, all the cathode plates on one side of the damaged cathode plate need to be sequentially removed from the groove to replace the damaged cathode plate, and the operation is very inconvenient. Content of the Utility Model

[0004] The purpose of the utility model is to provide a composite copper rod conductive crossbeam to solve at least one of the problems mentioned in the above background technique, such as the reduction of electrolysis efficiency of the conductive crossbeam due to acid mist corrosion, short service life, affecting product quality, and inconvenient operation for replacing the cathode plate.

[0005] The utility model provides a composite copper rod conductive crossbeam, which includes a composite copper rod, a housing, and a connecting piece. One side of the composite copper rod is fixed in the housing, and the other side extends out of the housing and is provided with a plurality of connecting pieces. The composite copper rod includes a copper strip and a stainless steel outer layer coated on the outer surface of the copper strip. The inner wall surface of the stainless steel outer layer is closely attached to the outer surface of the copper strip.

[0006] Further scheme: The longitudinal section of the housing is in the shape of "П". The inner cavity of the housing is sequentially provided with a counterweight block and a composite copper rod from the closed side to the open side. A plurality of connecting pieces are evenly distributed on the composite copper rod at equal intervals along the length direction of the composite copper rod.

[0007] Further scheme: The connecting piece includes two parallel connecting pieces. The two connecting pieces are respectively connected to the stainless steel outer layers on two opposite sides of the copper strip, and screw holes are provided on the connecting pieces.

[0008] Further solution: The connecting piece is welded to the stainless steel outer layer.

[0009] Further solution: Hooks are provided at both ends of the top of the housing.

[0010] Further solution: A hoop is provided at the bottom of the hook. The hoop includes two hoop pieces symmetrically arranged on both sides of the housing.

[0011] Further solution: One end of the hoop piece is connected to the hook, and the other end is flush with the open side of the housing.

[0012] Further solution: The open side of the housing is welded to the stainless steel outer layer. The end of the hoop piece flush with the open side of the housing is welded to the stainless steel outer layer. The connection weld layer between the hoop piece and the stainless steel outer layer is located outside the connection weld layer between the housing and the stainless steel outer layer.

[0013] Further solution: One end of the composite copper bar is provided with a power connection copper block, and the other end is provided with a cushion block.

[0014] Further solution: Sealing plates are also provided at both ends of the housing.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] 1. The composite copper bar is adopted, with a stainless steel outer layer wrapped around the copper bar and the stainless steel outer layer being tightly fitted with the copper bar to ensure conductivity and strength. The corrosion resistance of the stainless steel outer layer is increased, the conductive contact surface is not easily oxidized, the production energy consumption is reduced, the production cost is saved, and the service life is improved.

[0017] 2. The stainless steel outer layer has good welding performance, and the connecting piece for installing the cathode plate can be directly welded on the composite copper bar. Each cathode plate is independently installed, and the disassembly is convenient.

[0018] 3. Since the connecting piece needs to be welded to the composite copper bar, most of the composite copper bar is located outside the housing. A counterweight block is arranged inside the housing, which can improve the stability and strength of the crossbeam. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For the convenience of those skilled in the art to understand, the present utility model will be further described below with reference to the accompanying drawings:

[0020] Figure 1 It is a schematic structural diagram of a preferred embodiment of the present utility model;

[0021] Figure 2 It is a side view of a preferred embodiment of the present utility model;

[0022] Figure 3 It is a schematic diagram of the suspension of the cathode plate;

[0023] Figure 4 is Figure 3 the enlarged view of A-A in

[0024] Figure 5 is Figure 3 the enlarged view of B-B in

[0025] Figure 6 is Figure 3 the enlarged view of C-C in

[0026] In the figure: 1 - lifting hook; 2 - housing; 3 - counterweight; 4 - composite copper bar; 5 - connecting piece; 6 - first bolt; 7 - sealing plate; 8 - cushion block; 9 - cathode plate; 10 - connecting plate; 11 - second bolt; 12 - current-carrying copper block; 13 - hoop. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way serves as a limitation on the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0028] Unless otherwise specifically stated, the relative arrangements, numerical expressions and values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0029] In the description of the present invention, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without further statement, the above terms have no special meanings and therefore cannot be construed as limiting the scope of protection of the present invention.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] For the sake of convenience in description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. can be used here to describe the spatial position relationship of a device or feature shown in the figure with other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the figure of the device. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will then be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.

[0032] Please refer to Figures 1 - 2 As shown, this embodiment provides a composite copper bar conductive crossbeam, which includes a composite copper bar 4, a housing 2, and a connecting member. One side of the composite copper bar 4 is fixed inside the housing 2, and the other side extends out of the housing 2 and is provided with a plurality of connecting members. The composite copper bar 4 includes a copper bar and a stainless steel outer layer coated on the outer surface of the copper bar. The inner wall surface of the stainless steel outer layer is in close fit with the outer surface of the copper bar. By using the composite copper bar 4, a stainless steel outer layer is coated on the copper bar, and the stainless steel outer layer is in close fit with the copper bar to ensure conductivity and strength. The corrosion resistance of the stainless steel outer layer is increased, the conductive contact surface is not easily oxidized, the production energy consumption is reduced, the production cost is saved, and the service life is improved.

[0033] It should be noted that the copper bar is a rectangular bar, and stainless steel outer layers are coated on all six sides of the copper bar. The composite copper bar 4 is formed into a composite square bar by a hot extrusion process. The stainless steel outer layer and the inner core copper bar are closely fitted together. To ensure the fitting rate between the copper bar and the stainless steel outer layer, multiple hot extrusion forming processes are required. The fitting rate of the bonding surface is detected by ultrasonic wave and reaches 98% or more to ensure conductivity and strength. The hot extrusion forming process is a mature existing technology. First, a round copper bar is inserted into a stainless steel round tube, heated to a preset temperature for preliminary extrusion forming, and then subjected to two precision extrusions to make the formed size reach the larger value within the preset size range, and then cooled for ultrasonic fitting rate detection. If the fitting rate does not meet the preset standard, heating and precision extrusion are carried out again until it is qualified. The method for detecting the fitting rate of the bonding surface by ultrasonic wave and the ultrasonic detection equipment are existing technologies and will not be elaborated here.

[0034] Preferably, the copper bar is made of T2 pure copper, the stainless steel outer layer is made of 316L stainless steel, and the thickness of the stainless steel is 1.5 - 2 mm.

[0035] In some embodiments, please refer to Figures 1 - 3 As shown, the longitudinal section of the housing 2 is in the shape of "П". Inside the cavity of the housing 2, a counterweight 3 and a composite copper bar 4 are sequentially arranged from the closed side to the open side. The counterweight 3 can improve the stability and strength of the crossbeam. Preferably, the housing 2 is made of stainless steel, which has good welding performance and corrosion resistance. The open side of the housing 2 is welded to the stainless steel outer layer, which not only achieves the purpose of installing the composite copper bar 4 but also facilitates the welding operation. One side of the composite copper bar 4 extends out of the housing 2 and is provided with a number of connectors. The number of connectors is evenly distributed along the length direction of the composite copper bar 4 on the composite copper bar 4. The connectors are used to install the cathode plates 9. Each cathode plate 9 is independently installed, which is convenient for the disassembly and replacement of a single cathode plate 9. One end of the composite copper bar 4 is provided with a power connection copper block 12 for connecting the power busbar to energize the conductive crossbeam. The current is conducted to each cathode plate 9 through the connectors. Sealing plates 7 are also provided at both ends of the housing 2. The sealing plates 7 are made of 316L stainless steel to prevent the counterweight 3 from being exposed.

[0036] Preferably, the connecting member includes two connecting pieces 5 arranged in parallel. The two connecting pieces 5 are respectively connected to the stainless-steel outer layers on two opposite sides of the copper bar. The connecting pieces 5 are provided with screw holes. A gap for installing the cathode plate 9 is formed between the two connecting pieces 5. An assembly hole corresponding to the screw hole is opened at one end of the cathode plate 9 inserted into the gap. After inserting the cathode plate 9 into the gap, align the positions of the assembly hole and the screw hole. Insert a first bolt 6 into the screw hole of one side connecting piece 5, sequentially penetrate the assembly hole and the screw hole of the other side connecting piece 5, and fasten a matching nut at the end of the first bolt 6, then the cathode plate 9 can be fixed on the connecting member. Unscrew the matching nut and remove the first bolt 6, and the disassembly of the corresponding cathode plate 9 can be realized. It is very convenient to replace and install a single cathode plate 9, reducing the workload. The first bolt 6 and the nut matching the first bolt 6 are made of 316L stainless steel, which can ensure good electrical conductivity between the composite copper bar 4, the connecting piece 5, and the cathode plate 9, and is not easily corroded, with a long service life.

[0037] Of course, the connecting member can also be a single connecting piece 5. The connecting piece 5 is connected to the bottom of the composite copper bar 4 or any side adjacent to the bottom. The cathode plate 9 is installed on one side of the connecting piece 5 through bolts and nuts.

[0038] It should be noted that the connection method between the connecting piece 5 and the stainless-steel outer layer is welding. The stainless-steel outer layer has good welding performance, and the connecting member for installing the cathode plate 9 can be directly welded on the composite copper bar 4. Each cathode plate 9 is independently installed, which is convenient for disassembly and assembly. Exemplarily, the connecting piece 5 is made of 316L stainless steel to improve the connection stability with the stainless-steel outer layer.

[0039] In some embodiments, please refer to Figures 1 - 2 As shown, at both ends of the top of the housing 2 are provided with hooks 1. Exemplarily, the bottom of the hook 1 is welded to the housing 2. The hook 1 is made of stainless steel and has good welding performance and corrosion resistance. Hanging the hook 1 on the lifting tool can lift the conductive crossbeam, which is convenient for moving.

[0040] Preferably, a hoop 13 is provided at the bottom of the hook 1. The hoop 13 includes two hoop pieces symmetrically arranged on both sides of the housing 2. One end of the hoop piece is connected to the hook 1, and the other end is flush with the open side of the housing 2. Exemplarily, the hoop pieces are made of 316L stainless steel. One end of the two hoop pieces is respectively welded to the opposite sides of the hook 1, and the end flush with the open side of the housing 2 is respectively welded to the stainless-steel outer layer. The connection weld layer between the hoop piece and the stainless-steel outer layer is located outside the connection weld layer between the housing 2 and the stainless-steel outer layer, which not only completes the stable installation of the hook 1 but also facilitates the welding operation.

[0041] In some embodiments, please refer to Figures 1 - 2As shown, the composite copper bar 4 is also provided with a cushion block 8, which is located at the end far from the power connection copper block 12, facilitating the maintenance of a horizontal state when the conductive crossbeam is installed on the corresponding bracket. The installation methods of the bracket and the conductive crossbeam are prior arts.

[0042] It should be noted that the welding at the housing 2 and the stainless steel outer layer, the welding at the connecting piece 5 and the stainless steel outer layer, the welding at the hook 1 and the housing 2, the welding at the hoop piece and the hook 1, and the welding at the hoop piece and the stainless steel outer layer all adopt fillet welding or spot welding.

[0043] Refer to Figures 3 - 6 , in the actual application of the conductive crossbeam, a cathode plate 9 is installed in each of the connecting pieces. The conductive crossbeam serves as a gravity support beam, suspending the cathode plate 9 above the electrolytic cell. There is a gap between adjacent cathode plates 9 and they will not come into contact, ensuring the safety of electrolysis. Most of the cathode plate 9 is immersed in the electrolyte. One end of all the cathode plates 9 immersed in the electrolyte is fixed to the connecting plate 10 to prevent the cathode plate 9 from being suspended alone and vibrating. Preferably, the top of the connecting plate 10 is provided with a side groove. Correspondingly, the end of the cathode plate 9 fixed to the connecting plate 10 is provided with a protrusion corresponding to the side groove. The protrusion is installed in the side groove to provide support for the cathode plate 9. Screw holes are provided at corresponding positions on the protrusion and the side groove wall, and the cathode plate 9 and the connecting plate 10 are fixedly connected by a second bolt 11 and a nut matching the second bolt. The cathode plate 9 and the connecting plate 10 are both made of carbon fiber reinforced composite materials, which have electrical conductivity, reduce resistance, reduce power consumption, ensure the smooth progress of the electrolysis reaction, and have high corrosion resistance. The second bolt 11 and the nut matching the second bolt are made of polyether ether ketone (peek), with stable performance, not easily corroded by the electrolyte, and long service life. Through the hook 1, the overall hoisting of the conductive crossbeam and the cathode plate can be realized. If any cathode plate 9 is damaged, only the damaged cathode plate 9 needs to be removed and replaced with a new one, which is convenient for replacement and maintenance, reduces the workload, improves the production efficiency, adopts the composite copper bar 4, with a stainless steel outer layer coated on the copper bar and the stainless steel outer layer closely attached to the copper bar to ensure conductivity and strength. The corrosion resistance of the stainless steel outer layer is increased, the conductive contact surface is not easily oxidized, the production energy consumption is reduced, and the production cost is saved.

[0044] The above content is only an example and description of the structure of the present invention. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, as long as they do not deviate from the structure of the invention or exceed the scope defined by this claim book, they should all fall within the protection scope of the present invention.

Claims

1. A composite copper bar conductive crossbeam, characterized in that, It includes a composite copper bar, a housing and a connecting piece. One side of the composite copper bar is fixed inside the housing, and the other side extends out of the housing and is provided with a number of connecting pieces. The composite copper bar includes a copper strip and a stainless steel outer layer coated on the outer surface of the copper strip. The inner wall surface of the stainless steel outer layer is in close contact with the outer surface of the copper strip. The connecting piece includes two parallel connecting plates, and the two connecting plates are respectively connected to the stainless steel outer layers on two opposite sides of the copper strip. A gap for installing a cathode plate is formed between the two connecting plates, and screw holes are provided on the connecting plates.

2. The composite copper rod conductive crossbeam according to claim 1, wherein, The longitudinal section of the housing is in the shape of "П". A counterweight block and a composite copper bar are sequentially arranged in the internal cavity of the housing from the closed side to the open side, and a number of connecting pieces are evenly distributed on the composite copper bar at equal intervals along the length direction of the composite copper bar.

3. The composite copper bar conductive crossbeam according to claim 1, wherein, The connecting plates are connected to the stainless steel outer layer by welding.

4. A composite copper bar conductive crossbeam according to claim 1 or 2, characterized in that, Hooks are provided at both ends of the top of the housing.

5. A composite copper rod conductive crossbeam according to claim 4, characterized in that, A hoop is provided at the bottom of the hook. The hoop includes two hoop pieces symmetrically arranged on both sides of the housing.

6. The composite copper bar conductive crossbeam according to claim 5, characterized in that, One end of the hoop piece is connected to the hook, and the other end is flush with the open side of the housing.

7. The composite copper bar conductive crossbeam according to claim 6, characterized in that, The open side of the housing is welded to the stainless steel outer layer. The end of the hoop piece flush with the open side of the housing is welded to the stainless steel outer layer. The connection weld layer between the hoop piece and the stainless steel outer layer is located outside the connection weld layer between the housing and the stainless steel outer layer.

8. A composite copper rod conductive crossbeam according to claim 1, characterized in that, One end of the composite copper bar is provided with a power connection copper block, and the other end is provided with a cushion block.

9. A composite copper rod conductive crossbeam according to claim 1, wherein Sealing plates are also provided at both ends of the housing.

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