Electrolytic cell short circuit switch with elastic anti-corrosion bag and electrolytic cell group
By using an elastic anti-corrosion bag and a cylinder system to create a closed space in the short-circuit switch of the nickel electrolytic cell, the problems of limited operating space and copper busbar corrosion are solved, resulting in more uniform contact and higher production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JINCHUAN NICKEL COBALT RES & DESIGNING INST
- Filing Date
- 2022-10-09
- Publication Date
- 2026-08-04
AI Technical Summary
In the nickel electrolysis production process, the operating space of the short-circuit switch device is small, making it difficult to remove nickel sulfate crystals. In addition, the copper busbar surface is highly corrosive, affecting the flatness of the contact surface and the short-circuit effect, increasing power consumption and heat generation.
Use flexible anti-corrosion bags to cover the short-circuited copper busbars and the head/tail busbar sections of the slot, and use compressed air delivered by a cylinder to create normal pressure or slightly positive pressure to prevent crystal formation.
It improves the contact uniformity between the short-circuit conductive block and the busbar, saves manpower, reduces crystal formation, reduces power consumption and heat generation, and improves production efficiency.
Smart Images
Figure CN115652366B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of non-ferrous metal electrolysis equipment technology, specifically to an electrolytic cell short-circuit switch with an elastic anti-corrosion bag and an electrolytic cell assembly. Background Technology
[0002] During nickel electrolysis production, the circulating liquid in the electrolytic cell evaporates rapidly. The evaporated solution forms nickel sulfate crystals on the copper busbars at the cell head (tail) and short-circuit switch devices. Before closing the short-circuit switch, these nickel sulfate crystals must be removed from the surfaces of the short-circuit copper busbars and the cell head (tail) busbars to ensure proper contact. In actual production, the short-circuit switch devices are relatively small, resulting in limited operating space for workers to remove the crystals, increasing the difficulty of operation. Furthermore, the nickel sulfate crystals on the copper busbars are typically removed by soaking in an acidic solution and then wiping, which is corrosive to the surface. As corrosion deepens, the surface smoothness decreases, the adhesion between the two copper busbar surfaces deteriorates, and the short-circuit effect of the short-circuit device diminishes, increasing power consumption and heat generation at this location. Summary of the Invention
[0003] To address the problems existing in the prior art, this invention provides an electrolytic cell short-circuit switch and electrolytic cell assembly with an elastic anti-corrosion bag. It creatively uses an elastic, anti-corrosion diaphragm bag to cover the short-circuit copper busbar and the head (tail) busbar portion in contact with the short-circuit copper busbar in the short-circuit switch, forming a relatively closed space. Simultaneously, air inlets are provided on the diaphragm to deliver compressed air that needs to be discharged during cylinder operation into the diaphragm, creating a normal or slightly positive pressure within the closed space. This eliminates the problem of crystallization of evaporated electrolyte at the short-circuit copper busbar and head (tail) busbar locations. Specifically, this invention includes the following:
[0004] An electrolytic cell short-circuit switch with an elastic anti-corrosion bag includes a fixed frame with an opening on one side, a cylinder, an insulating block, a short-circuit conductive block, and an elastic anti-corrosion bag. The fixed frame includes an upper plate, a lower plate, and connecting plates connected to the upper and lower plates respectively. The upper plate has a reserved through hole. The cylinder is connected to the upper plate through an insulating flange. The lower end of the cylinder piston rod passes through the reserved through hole in the upper plate and is vertically downward inside the fixed frame. The elastic anti-corrosion bag is located on the upper surface of the lower plate, and has an elastic reserved opening on the top and sides. The short-circuit conductive block is connected to the lower surface of the insulating block, and the insulating block and the short-circuit conductive block are located inside the elastic anti-corrosion bag. The lower end of the cylinder piston rod passes through the elastic reserved opening on the top of the elastic anti-corrosion bag and is connected to the upper surface of the insulating block. The total length of the piston rod, insulating block, and short-circuit conductive block in the vertical direction is greater than the distance between the upper and lower plates of the fixed frame.
[0005] Specifically, the edge of the elastic reserved opening is provided with an elastic contraction band.
[0006] Specifically, the elastic anti-corrosion bag is also provided with an inflation hole; the cylinder includes an upper air chamber and a lower air chamber separated by a piston, a first air hole is provided at the upper end of the side wall of the upper air chamber, and a second air hole is provided at the lower end of the side wall of the lower air chamber, and the first air hole and the second air hole are connected by a first pipeline; a connection port is provided on the first pipeline, and the connection port is connected to the inflation hole by a second pipeline; a three-way gas valve is provided on the first pipeline between the connection port and the first air hole.
[0007] Specifically, the three-way gas valve is an electric three-way gas regulating valve.
[0008] Specifically, the upper plate and the lower plate are arranged opposite each other, and the connecting plate is connected to the same side of the upper plate and the lower plate respectively.
[0009] Specifically, the short-circuit conductive block is a short-circuit copper busbar.
[0010] Specifically, the lower plate and the connecting plate are each provided with at least one mounting hole.
[0011] An electrolytic cell assembly with an electrolytic cell short-circuit switch featuring an elastic anti-corrosion bag includes at least two electrolytic cells arranged side-by-side. The electrolytic cells are mounted on a base, and insulating strips are provided between the head busbars and tail busbars of adjacent electrolytic cells. The electrolytic cell short-circuit switch with the elastic anti-corrosion bag is located at the insulating strip, and the width of the insulating strip is less than the width of the short-circuit conductive block. A lower plate is located below the insulating strip, and the short-circuit conductive block is located above the insulating strip. The ends of the head busbars or tail busbars arranged opposite each other on both sides of the insulating strip pass through the elastic pre-reserved openings on both sides of the elastic anti-corrosion bag and extend into the interior of the elastic anti-corrosion bag.
[0012] Specifically, the lower plate and the connecting plate of the electrolytic cell short-circuit switch device are respectively provided with at least one mounting hole, and the electrolytic cell short-circuit switch device is fixedly connected to the base of the electrolytic cell through the mounting holes on the lower plate and / or the connecting plate.
[0013] The beneficial effects of this invention are:
[0014] (1) Using cylinder transmission instead of traditional manual pressing can make the contact between the short-circuit conductive block and the busbar at the head or tail of the slot more uniform and accurate, and can also save manpower and improve production efficiency.
[0015] (2) The present invention creatively uses an elastic anti-corrosion bag and sets a reserved opening on the elastic anti-corrosion bag. The reserved opening is sealed with an elastic band. The elastic band sealing can ensure the fit of the elastic anti-corrosion bag with the cylinder piston rod, the slot head busbar, and the slot tail busbar, thereby ensuring the sealing of the inside of the elastic anti-corrosion bag. In this way, the elastic anti-corrosion bag can cover the short-circuit conductive block in the short-circuit switch and the slot head (slot tail) busbar part in contact with the short-circuit conductive block to form a relatively closed space, without affecting the up and down movement of the short-circuit conductive block.
[0016] (3) An air inlet is provided on the elastic anti-corrosion bag. The air inlet is connected to the upper and lower air chambers of the cylinder. A three-way gas valve is provided on the connecting pipeline. By adjusting the three-way gas valve, it can be ensured that the compressed air discharged by the cylinder piston can be delivered to the diaphragm, whether the cylinder piston moves up or down. This makes the closed space inside the diaphragm form a normal pressure or a slight positive pressure, preventing negative pressure from causing external gas to enter the bag through the gaps in the elastic anti-corrosion bag. This eliminates the problem of the evaporated electrolyte crystallizing at the short-circuit copper busbar and the head (tail) busbar position. Attached Figure Description
[0017] Figure 1 This is a front view of the electrolytic cell short-circuit switch with an elastic anti-corrosion bag disclosed in this invention;
[0018] Figure 2 This is a left view of the electrolytic cell short-circuit switch with an elastic anti-corrosion bag disclosed in this invention.
[0019] Figure 3 A schematic diagram showing the flow of compressed air when the cylinder piston moves downward during the operation of a short-circuit switch;
[0020] Figure 4 This is a schematic diagram showing the flow of compressed air when the cylinder piston moves upward during the operation of a short-circuit switch. Detailed Implementation
[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments shown below do not limit the scope of the invention as described in the claims. Furthermore, the complete contents of the configurations illustrated in the following embodiments are not limited to those necessary for the solution of the invention as described in the claims.
[0022] Reference Appendix Figure 1An electrolytic cell short-circuit switch with an elastic anti-corrosion bag includes a fixed frame with an opening on one side, a cylinder 1, an insulating block 3, a short-circuit conductive block 4, and an elastic anti-corrosion bag 5. The fixed frame includes an upper plate 7, a lower plate 9, and a connecting plate 8 connected to the upper plate 7 and the lower plate 9 respectively. The upper plate 7 has a reserved through hole. The cylinder 1 is connected to the upper plate 7 through an insulating flange 2. The lower end of the cylinder piston rod 10 passes through the reserved through hole in the upper plate 7 and is vertically downward inside the fixed frame. The elastic anti-corrosion bag 5 is located below the upper surface of the lower plate 9. An elastic pre-reserved opening is provided on the top and both sides of 5; the short-circuit conductive plate is connected to the lower surface of the insulating block 3, and the insulating block 3 and the short-circuit conductive plate are placed inside the elastic anti-corrosion bag 5; the lower end of the cylinder piston rod 10 passes through the elastic pre-reserved opening 17 above the elastic anti-corrosion bag 5 and is connected to the upper surface of the insulating block 3; the total length of the piston rod, the insulating block 3 and the short-circuit conductive block 4 in the vertical direction is greater than the distance between the upper plate 7 and the lower plate 9 of the fixing frame, so as to ensure that the short-circuit conductive block 4 can contact the head busbar 6 or the tail busbar when the piston rod moves down.
[0023] In one embodiment of the present invention, the edge of the elastic reserved opening 17 is provided with an elastic shrink band, which can ensure the fit of the elastic anti-corrosion bag 5 with the cylinder piston rod 10, the groove head busbar 6, and the groove tail busbar, thereby ensuring the sealing of the inside of the elastic anti-corrosion bag 5.
[0024] In one embodiment of the present invention, the elastic anti-corrosion bag 5 is further provided with an inflation hole 16; the cylinder 1 includes an upper air chamber and a lower air chamber separated by a piston, the upper end of the side wall of the upper air chamber is provided with a first air hole 11, and the lower end of the side wall of the lower air chamber is provided with a second air hole 12, the first air hole 11 and the second air hole 12 are connected by a first pipe 13; the first pipe 13 is provided with a connection port, and the connection port is connected to the inflation hole 16 by a second pipe 15; the first air hole 16 is connected to the first air hole 11 by the connection port. A three-way gas valve 14 is installed on the pipeline 13. The three-way gas valve 14 is preferably an electric three-way gas regulating valve. By adjusting the three-way gas valve 14, it can be ensured that the compressed air discharged by the piston of cylinder 1 can be delivered to the diaphragm whether the piston moves up or down, so that the closed space inside the diaphragm forms a normal pressure or a slightly positive pressure. This prevents external gas from entering the bag through the gap of the elastic anti-corrosion bag 5 due to negative pressure. In this way, the problem of the evaporated electrolyte crystallizing at the short-circuit copper busbar and the busbar at the head (tail) of the tank can be eliminated.
[0025] In one embodiment of the present invention, the upper plate 7 and the lower plate 9 are arranged vertically opposite each other, and the connecting plate 8 is connected to the same side of the upper plate 7 and the lower plate 9 respectively. Preferably, the upper plate 7 and the lower plate 9 are arranged parallel to each other, and the connecting plate 8 is perpendicularly connected to the same side of the upper plate 7 and the lower plate 9 respectively. It should be noted that the upper plate 7 and the lower plate 9 may not be arranged parallel to each other, and the connecting plate 8 may not be perpendicularly connected to the upper plate 7 and the lower plate 9. The specific arrangement can be adjusted according to actual needs.
[0026] In one embodiment of the present invention, the short-circuit conductive block 4 is a short-circuit copper busbar.
[0027] In one embodiment of the present invention, at least one mounting hole is provided on the lower plate 9 and the connecting plate 8 respectively.
[0028] An electrolytic cell assembly with an electrolytic cell short-circuit switch having an elastic anti-corrosion bag 5 includes at least two electrolytic cells arranged side by side. The electrolytic cells are mounted on a base. Insulating strips are provided between the head busbars 6 and the tail busbars of adjacent electrolytic cells. The electrolytic cell short-circuit switch with the elastic anti-corrosion bag 5 is located at the insulating strip. The width of the insulating strip is smaller than the width of the short-circuit conductive block 4. The lower plate 9 is located below the insulating strip, and the short-circuit conductive block 4 is located above the insulating strip. The ends of the head busbars 6 or tail busbars arranged opposite each other on both sides of the insulating strip pass through the elastic reserved openings 17 on both sides of the elastic anti-corrosion bag 5 and extend into the interior of the elastic anti-corrosion bag 5.
[0029] In one embodiment of the present invention, at least one mounting hole is provided on the lower plate 9 and the connecting plate 8 of the electrolytic cell short-circuit switch device, and the electrolytic cell short-circuit switch device is fixedly connected to the base of the electrolytic cell through the mounting holes on the lower plate 9 and / or the connecting plate 8.
[0030] During installation, the short-circuit switch disclosed in this invention involves inserting the insulating block 3 and the short-circuit copper busbar into the pre-reserved opening at the top of the elastic anti-corrosion bag 5. The cylinder piston rod 10 extends into the pre-reserved opening and connects with the insulating block 3. An elastic band is provided at the contact point between the cylinder piston rod 10 and the pre-reserved opening, and the elastic band is tightly attached to the outside of the piston rod to ensure the sealing of the inside of the elastic anti-corrosion bag 5. The head (tail) busbars on both sides of the electrolytic cell group's insulating strip are inserted through the pre-reserved openings on both sides of the elastic anti-corrosion bag 5 according to the installation position. An elastic band is provided at the contact point around the pre-reserved opening, and the elastic band is tightly attached to the head busbar 6 or tail busbar at the junction of the elastic anti-corrosion bag 5 and the head busbar 6 or tail busbar, thus forming a closed space inside the elastic anti-corrosion bag 5. The cylinder 1 communicates with the inside of the elastic anti-corrosion bag 5 through the first pipe 13 and the second pipe 15. Figure 2 and 3As shown in the attached diagram, the arrows indicate the direction of airflow. By adjusting the three-way gas valve 14 on the first pipeline 13, it can be ensured that the compressed air discharged from the piston of cylinder 1, whether moving upwards or downwards, can be delivered to the diaphragm. This creates a normal or slightly positive pressure in the enclosed space within the diaphragm, preventing external gas from entering the bag through the gaps in the elastic anti-corrosion bag 5 due to negative pressure. This eliminates the problem of the evaporated electrolyte crystallizing at the short-circuit copper busbar and the head (tail) busbar. When cylinder 1 is running, an external air source provides power, and compressed air enters the first chamber of cylinder 1 through the first air port 11. The piston moves downwards inside cylinder 1, and the air in the second chamber of cylinder 1 is discharged through the second air port 12 into the diaphragm, providing clean compressed air to the elastic anti-corrosion bag 5. When cylinder 1 is depressurized, the compressed air in the first chamber of cylinder 1 is discharged and enters the second chamber and the elastic anti-corrosion bag 5 through the first air port 11, providing clean air to the second chamber and the elastic anti-corrosion bag 5. The elastic anti-corrosion bag 5 has a certain degree of elasticity. When the compressed air entering the bag causes the internal pressure to exceed 0.05MPa, the compressed air can be discharged from the gap between the elastic band of the three reserved openings of the bag 5 and the piston rod, the head busbar 6 or the tail busbar, thus achieving a balance between the intake and exhaust of compressed air inside the diaphragm.
[0031] The short-circuit switch disclosed in this invention uses a cylinder 1 for transmission instead of traditional manual pressing. This ensures more uniform and accurate contact between the short-circuit conductive block 4 and the head or tail busbar 6, while also saving manpower and improving production efficiency. The switch also innovatively utilizes an elastic anti-corrosion bag 5 with a pre-drilled opening sealed with an elastic band. This elastic band seal ensures proper fit between the elastic anti-corrosion bag 5 and the cylinder piston rod 10, the head busbar 6, and the tail busbar, thus guaranteeing the internal sealing of the elastic anti-corrosion bag 5. The elastic anti-corrosion bag 5 effectively encloses the short-circuit conductive block 4 and the head (tail) busbar portion in contact with it, creating a relatively enclosed space without hindering the vertical movement of the short-circuit conductive block 4.
[0032] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] Unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A short-circuit switch for an electrolytic cell with an elastic anti-corrosion bag, characterized in that, The device includes a fixed frame with an opening on one side, a cylinder, an insulating block, a short-circuit conductive block, and an elastic anti-corrosion bag. The fixed frame includes an upper plate, a lower plate, and connecting plates connected to the upper and lower plates respectively. The upper plate has a pre-drilled through hole. The cylinder is connected to the upper plate via an insulating flange, and the lower end of the cylinder piston rod passes through the pre-drilled through hole in the upper plate and is vertically downward inside the fixed frame. The elastic anti-corrosion bag is located on the upper surface of the lower plate, and has an elastic pre-drilled opening on the top and sides. The short-circuit conductive block is connected to the lower surface of the insulating block, and the insulating block and the short-circuit conductive block are located inside the elastic anti-corrosion bag. The lower end of the cylinder piston rod passes through the elastic pre-drilled through hole on the top of the elastic anti-corrosion bag. The cylinder has an opening and is connected to the upper surface of the insulating block; the total length of the piston rod, insulating block, and short-circuit conductive block in the vertical direction is greater than the distance between the upper and lower plates of the fixing frame; the elastic anti-corrosion bag is also provided with an inflation hole; the cylinder includes an upper air chamber and a lower air chamber separated by a piston, a first air hole is provided at the upper end of the side wall of the upper air chamber, and a second air hole is provided at the lower end of the side wall of the lower air chamber, and the first air hole and the second air hole are connected by a first pipeline; a connection port is provided on the first pipeline, and the connection port is connected to the inflation hole by a second pipeline; a three-way gas valve is provided on the first pipeline between the connection port and the first air hole; the three-way gas valve is an electric three-way gas regulating valve.
2. The short-circuit switch for an electrolytic cell with an elastic anti-corrosion bag according to claim 1, characterized in that, The edge of the elastic reserved opening is provided with an elastic shrink band.
3. The short-circuit switch for an electrolytic cell with an elastic anti-corrosion bag according to claim 1, characterized in that, The upper plate and the lower plate are arranged opposite each other, and the connecting plate is connected to the same side of the upper plate and the lower plate respectively.
4. The short-circuit switch for an electrolytic cell with an elastic anti-corrosion bag according to claim 1, characterized in that, The short-circuit conductive block is a short-circuit copper busbar.
5. The short-circuit switch for an electrolytic cell with an elastic anti-corrosion bag according to claim 1, characterized in that, The lower plate and the connecting plate are each provided with at least one mounting hole.
6. An electrolytic cell assembly with an electrolytic cell short-circuit switch with an elastic anti-corrosion bag as described in any one of claims 1-5, comprising at least two electrolytic cells arranged side by side, the electrolytic cells being mounted on a base, and insulating strips being provided between the head busbars and tail busbars of adjacent electrolytic cells, characterized in that, The short-circuit switch of the electrolytic cell with an elastic anti-corrosion bag is set at the insulating strip, the width of which is smaller than the width of the short-circuit conductive block; the lower plate is set below the insulating strip, the short-circuit conductive block is set above the insulating strip, and the ends of the head busbar or tail busbar arranged opposite on both sides of the insulating strip pass through the elastic reserved openings on both sides of the elastic anti-corrosion bag and extend into the interior of the elastic anti-corrosion bag.
7. An electrolytic cell assembly according to claim 6, characterized in that, The electrolytic cell short-circuit switch device has at least one mounting hole on its lower plate and connecting plate, and the electrolytic cell short-circuit switch device is fixedly connected to the base of the electrolytic cell through the mounting holes on the lower plate and / or connecting plate.