Electrolytic bath

Abstract

The utility model discloses an electrolytic bath which comprises an electrolytic bath main body and an electrolytic bath frame used for fixing the electrolytic bath main body, the electrolytic bath main body comprises a plurality of single sheets which are overlapped along the axial direction, and the electrolytic bath further comprises a driving device, a first single sheet replacement structure and a second single sheet replacement structure, when a certain single sheet in the electrolytic bath main body needs to be replaced, the first single sheet replacing structure and the second single sheet replacing structure respectively clamp all single sheets on two sides of a single sheet to be replaced; and the driving device drives all the single sheets clamped by the first single sheet replacing structure and / or all the single sheets clamped by the second single sheet replacing structure to move. All the single pieces can be pressed through the electrolytic cell frame, and the electrolytic cell frame is matched with the driving device to complete assembling of the electrolytic cell body. According to the scheme, the electrolytic cell frame, the driving structure, the electrolytic cell main body and the single-chip replacement structure are designed into a whole, so that the assembling process of the electrolytic cell is simplified, and the maintenance difficulty and the maintenance cost of the electrolytic cell are greatly reduced.

Description

Technical Field

[0001] The utility model relates to electrolysis equipment, in particular to an electrolytic cell. Background Art

[0002] The existing assembly process of water electrolysis hydrogen production electrolyzers requires workers to operate and cooperate with tooling to stack the plates. During the stacking process, the positioning rods and positioning holes on the plates must be manually operated to perform positioning and assembly to ensure verticality throughout the stacking process.

[0003] Due to machining errors, manual alignment of the positioning rods and plate locating holes cannot achieve precise alignment. Furthermore, as the stack height increases, the segmented alignment of the positioning rods and plate locating holes increases the overall verticality error. Furthermore, the clamping process requires manual coordination with the clamping tool. After the clamping is complete, the electrolyzer must be tilted from vertical to horizontal using a flip mechanism to complete the overall assembly. Both assembly and maintenance of the electrolyzer require switching between vertical and horizontal positions, which is not only laborious but also requires high safety standards. Furthermore, the overall assembly of the electrolyzer requires a customized assembly platform, which varies depending on the size of the electrolyzer and occupies a large area of ​​factory floor space. For factories with limited height, assembly requires digging a pit within the factory, which is labor-intensive, financially expensive, and resource-intensive. If a traditional electrolyzer malfunctions, subsequent repairs require removing all individual components, replacing the gaskets, and reassembling, resulting in high maintenance costs. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide an electrolytic cell with high assembly efficiency and easy maintenance.

[0005] Technical solution: The electrolytic cell described in the utility model includes an electrolytic cell main body and an electrolytic cell frame for fixing the electrolytic cell main body, the electrolytic cell main body includes a plurality of single pieces stacked along the axial direction, and the electrolytic cell also includes a driving device, a first single piece replacement structure and a second single piece replacement structure. When a single piece in the electrolytic cell main body needs to be replaced, the first single piece replacement structure and the second single piece replacement structure respectively clamp all the single pieces on both sides of the single piece to be replaced, and the driving device drives all the single pieces clamped by the first single piece replacement structure and / or all the single pieces clamped by the second single piece replacement structure to move.

[0006] The electrolytic cell is positioned by the electrolytic cell frame, and the cooperation between the electrolytic cell frame and the drive device can compress all the single pieces to complete the assembly of the electrolytic cell body. When one of the single pieces fails, the first single piece replacement structure and the second single piece structure can respectively clamp all the single pieces on both sides of the single piece to be replaced, and the drive device drives all the single pieces on at least one side away from the single piece to be replaced, thereby facilitating the removal of the single piece to be replaced and then replacing it with a new one. The above solution integrates the electrolytic cell frame, drive structure, and electrolytic cell body into one design, which not only simplifies the assembly process of the electrolytic cell, but also greatly reduces the difficulty and cost of maintenance.

[0007] The electrolytic cell frame includes a fixed plate and a pressure plate respectively located at both ends of the electrolytic cell body in the axial direction, and two side beams respectively arranged on both sides of the electrolytic cell body; the fixed plate and the pressure plate are used to jointly clamp the electrolytic cell body, the fixed plate and the side beam are fixedly connected, and the pressure plate and the side beam are movably connected; the driving device is connected to the pressure plate to drive the pressure plate to move along the side beam. Preferably, at least one side of the side beam has a V-shaped cross-section, which is conducive to positioning the electrolytic cell body and further ensuring the consistency of the single-piece assembly. The driving device drives the pressure plate to press the electrolytic cell body, so that the gap between the single pieces is reduced, thereby compressing the sealing gasket to ensure a good seal between the single pieces.

[0008] The driving device includes a hydraulic cylinder and a cylinder seat, wherein the hydraulic cylinder is fixed to the cylinder seat, and both ends of the cylinder seat are fixedly connected to the side beams. The hydraulic drive to move the pressing plate can ensure the stability of movement and avoid affecting the assembly consistency of the electrolytic cell body.

[0009] The system also includes a locking motor and a locking nut, the locking nut being threadedly connected to the hydraulic cylinder. The locking motor drives the locking nut to rotate, thereby locking the pressure plate. Optionally, a gear transmission is employed between the locking motor and the locking nut. Locking the pressure plate with the locking nut ensures that all individual plates and seals are tightly aligned, preventing seal failure between the plates.

[0010] The fixed plate and the pressing plate are provided with a pull rod seat, and the first single-piece replacement structure and the second single-piece replacement structure both include a pull rod, a pull cable and a pull block connected in sequence; the pull rod of the first single-piece replacement structure is connected to the pull rod seat on the pressing plate, and its pull block is connected to the adjacent single piece on one side of the single piece to be replaced; the pull rod of the second single-piece replacement structure is connected to the pull rod seat on the fixed plate, and its pull block is connected to the adjacent single piece on the other side of the single piece to be replaced. The first single-piece replacement structure can clamp all the single pieces between the pressing plate and the single piece to be replaced, and the second single-piece replacement structure can clamp all the single pieces between the fixed plate and the single piece to be replaced, so that all the single pieces on both sides of the single piece to be replaced are respectively formed into a whole, so that the driving device can pull apart all the single pieces on at least one side, and then the single piece to be replaced can be repaired or replaced, while avoiding the situation where the single piece becomes loose and leaks.

[0011] The first and second single-piece replacement structures are each provided at circumferential intervals of three, and three corresponding pull rod seats are provided on the fixed plate and the pressure plate. The three circumferentially spaced replacement structures ensure that the single piece is evenly stressed during the pulling process, preventing it from being pulled sideways.

[0012] The contact surface of the pull block with the monolithic plate is designed as a curved surface; the monolithic plate and the pull block are provided with corresponding positioning holes for bolt connection. The curved surface design ensures a tight fit between the pull block and the monolithic plate, further ensuring balanced force on the monolithic plate and reliable clamping.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. Through the integrated design of the electrolytic cell body, the electrolytic cell frame and the drive device, the overall assembly equipment and process are simplified, saving manpower and time costs; 2. The cooperation of the drive device, the first single-piece replacement structure and the second single-piece structure can realize the separate repair or replacement of any single piece, reducing the maintenance cost of the electrolytic cell; 3. This solution relies on the mechanical structure to ensure verticality, and at the same time does not require a customized electrolytic cell flipping platform. The entire electrolytic cell is equipped with a single-piece replacement and maintenance device. Compared with the traditional electrolytic cell maintenance method that requires the electrolytic cell to be transported back to the factory and completely disassembled and reassembled, this solution can not only be maintained and replaced on-site, saving costs, but also has a fast replacement speed and a short cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a structural diagram of the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4It is a side view of the utility model;

[0018] Figure 5 This is a structural diagram of the pull rod of the utility model. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 3 As shown, the electrolytic cell described in the utility model includes an electrolytic cell body 1, an electrolytic cell frame 2 for fixing the electrolytic cell body 1, a driving device 3, a locking motor 61, a locking nut 62, a first single-piece replacement structure 4, and a second single-piece replacement structure 5. The electrolytic cell body 1 includes a plurality of single pieces stacked in the axial direction. The electrolytic cell frame 2 includes a fixed plate 21 and a clamping plate 22 respectively located at the axial ends of the electrolytic cell body 1, and two side beams respectively arranged on both sides of the electrolytic cell body 1; the fixed plate 21 and the clamping plate 22 are used to jointly clamp the electrolytic cell body 1, the fixed plate 21 and the side beam are fixedly connected, and the clamping plate 22 and the side beam are movably connected; the driving device 3 is connected to the clamping plate 22 to drive the clamping plate 22 to move along the side beam. The side beam has a V-shaped cross-section. The driving device 3 includes a hydraulic cylinder 31 and a cylinder seat 32. The hydraulic cylinder 31 is fixed on the cylinder seat 32, and the two ends of the cylinder seat 32 are respectively fixedly connected to the side beams. The locking nut 62 is threadedly connected to the hydraulic cylinder 31, and the locking motor 61 drives the locking nut 62 to rotate to lock the clamping plate 22. Gear transmission is adopted between the locking motor 61 and the locking nut 62. A pull rod seat 23 is provided on the fixed plate 21 and the clamping plate 22. The first single-piece replacement structure 4 includes a pull rod 41, a pull cable 42 and a pull block 43 connected in sequence, and the second single-piece replacement structure 5 includes a pull rod 51, a pull cable 52 and a pull block 53 connected in sequence; the pull rod 41 of the first single-piece replacement structure 4 is connected to the pull rod seat 23 on the clamping plate 22, and its pull block 43 is connected to the adjacent single piece on one side of the single piece to be replaced 11; the pull rod 51 of the second single-piece replacement structure 5 is connected to the pull rod seat 23 on the fixed plate 21, and its pull block 53 is connected to the adjacent single piece on the other side of the single piece to be replaced 11. The first and second single-piece replacement structures 4 and 5 are each spaced three apart along the circumference of the single piece, with three corresponding pull rod seats 23 on the fixing plate 21 and the pressure plate 22. The contact surface of the pull block with the single piece is a curved surface; the single piece and the pull block are provided with corresponding positioning holes for bolt connection.

[0021] Specific, combined Figure 4As shown, the electrolytic cell body 1 is assembled in the horizontal direction, and the pressing power is provided by the hydraulic cylinder 31. Before assembling the electrolytic cell body 1, the electrolytic cell frame 2 is assembled first. The fixed plate 21 and the side beams on both sides are connected by bolts, and the cylinder seat 32 and the side beams on both sides are connected by bolts. The hydraulic cylinder 31 is fixed to the cylinder seat 32 by bolts. Insulating plates 18 are respectively provided between the fixed plate 21 and the electrolytic cell body 1, and between the pressing plate 22 and the electrolytic cell body 1. The insulating plates 18 are respectively connected to the fixed plate 21 and the pressing plate 22 by bolts. Then, the left end pressing plate 12, the left end single piece 13, multiple groups of middle single pieces 14 and the sealing gasket 15, the right end single piece 16, and the right end pressing plate 17 are installed in sequence according to the assembly order of the electrolytic cell body 1. The left-end pressure plate 12, the left-end single piece 13, the middle single piece 14, the right-end single piece 16, and the right-end pressure plate 17 have hanging ears on both sides that match the side beams, and are fixed to both sides through the hanging ears. The V-shaped structure of the left side beam 2 is used to position the left-end pressure plate 12, the left-end single piece 13, the middle single piece 14, the right-end single piece 16, and the right-end pressure plate 17 to ensure the consistency of one side after the single piece is assembled and no large misalignment occurs. After assembly is completed, in order to ensure the seal between the single pieces, it is necessary to tighten them. At this time, the hydraulic cylinder 31 provides the clamping force, pushing the clamping plate 22 toward the fixed plate 21 to reduce the gap between the single pieces, thereby compressing the sealing gasket 15 to ensure a good seal. After tightening into place, the locking motor 61 drives the locking nut 62 through the gear transmission to tighten, preventing the single piece from loosening and leaking. After the locking nut 62 is locked into place, the assembly of the entire electrolytic cell is completed.

[0022] When a single piece of the electrolytic cell fails, the traditional electrolytic cell practice is to remove all the single pieces, replace all the sealing gaskets 15, reassemble and tighten them. The utility model can use the pulling force of the hydraulic cylinder 31 on the electrolytic cell to pull open all the single pieces in front of the failed single piece through the pulling device, while ensuring that all the seals of the single pieces in front of the failed single piece are not loosened, and only the failed single piece needs to be replaced. The specific implementation plan is that when a single piece of the electrolytic cell is found to have failed, it needs to be replaced. The pull rod seats 23 are welded to the fixed plate 21 and the clamping plate 22 respectively, and three are arranged on each, namely two on the upper part and one in the center of the bottom, to ensure that the single piece is balanced in force during the pulling process and is not easily pulled off balance. The two ends of the cable are fastened by U-shaped chucks. The first single piece replacement structure 4 and the second single piece replacement structure 5 are exactly the same, combined with Figure 5As shown, taking the first single-piece replacement structure 4 as an example, one end of the cable 42 is connected to the pull shaft 414 of the pull rod 41, and the other end is connected to the pull block 43. When the nth single piece fails, the pull block 43 of the first single piece replacement structure 4 is connected starting from the n+1th single piece according to the positioning holes of the pull block 43 and the positioning holes on the single piece. Three bolts are installed on each side. The bottom of the pull block 43 is made into an arc surface, which fits seamlessly with the outer periphery of the single piece. Then the pull rod body 411 is passed through the hole of the pull rod seat 23, and the first nut 412 is installed. The cable 42 is straightened. When the first nut 412 is close to the pull rod seat 23, it is tightened with a tool. The cable 42 is in a tensile state and can overcome the rebound force of the sealing gasket. Then the second nut 413 is installed, which mainly plays a role in preventing loosening. After the cable 42, the pull rod body 411, the first nut 412, and the second nut 413 are all installed, the hydraulic cylinder 31 is retracted, moving it away from the fixed plate 21, pulling the clamped disc apart and freeing the nth disc. The left and right gaskets of the nth disc are now separated, allowing the faulty nth disc to be lifted out and replaced with a new one, simultaneously replacing the gaskets on both sides. After the replacement is complete, the hydraulic cylinder 31 is extended, moving it toward the fixed plate 21, pushing the pressure plate 22 to move and compress it, completing the disc replacement.

[0023] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the various embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An electrolytic cell comprising an electrolytic cell body (1) and an electrolytic cell frame (2) for fixing the electrolytic cell body (1), wherein the electrolytic cell body (1) comprises a plurality of single pieces stacked in an axial direction, characterized in that: The electrolytic cell further comprises a driving device (3), a first single-chip replacement structure (4) and a second single-chip replacement structure (5). When a single chip in the electrolytic cell body (1) needs to be replaced, the first single-chip replacement structure (4) and the second single-chip replacement structure respectively clamp all the single chips on both sides of the single chip (11) to be replaced, and the driving device (3) drives all the single chips clamped by the first single-chip replacement structure (4) and / or all the single chips clamped by the second single-chip replacement structure (5) to move.

2. The electrolytic cell according to claim 1, characterized in that The electrolytic cell frame (2) comprises a fixed plate (21) and a pressing plate (22) respectively located at the axial ends of the electrolytic cell body (1), and two side beams respectively arranged on both sides of the electrolytic cell body (1); the fixed plate (21) and the pressing plate (22) are used to clamp the electrolytic cell body (1) together, the fixed plate (21) and the side beam are fixedly connected, and the pressing plate (22) and the side beam are movably connected; the driving device (3) is connected to the pressing plate (22) to drive the pressing plate (22) to move along the side beam.

3. The electrolytic cell according to claim 2, characterized in that The driving device (3) comprises a hydraulic cylinder (31) and a cylinder seat (32); the hydraulic cylinder (31) is fixed on the cylinder seat (32); and both ends of the cylinder seat (32) are fixedly connected to the side beams.

4. The electrolytic cell according to claim 3, characterized in that It also includes a locking motor (61) and a locking nut (62), wherein the locking nut (62) is threadedly connected to the hydraulic cylinder (31), and the locking motor (61) drives the locking nut (62) to rotate to lock the pressing plate (22).

5. The electrolytic cell according to claim 2, characterized in that A pull rod seat (23) is provided on the fixed plate (21) and the pressing plate (22), and the first single-piece replacement structure (4) and the second single-piece replacement structure (5) both include a pull rod (41, 51), a cable (42, 52) and a pull block (43, 53) connected in sequence; the pull rod (41) of the first single-piece replacement structure (4) is connected to the pull rod seat (23) on the pressing plate (22), and its pull block (43) is connected to the adjacent single piece on one side of the single piece (11) to be replaced; the pull rod (51) of the second single-piece replacement structure (5) is connected to the pull rod seat (23) on the fixed plate (21), and its pull block (53) is connected to the adjacent single piece on the other side of the single piece (11) to be replaced.

6. The electrolytic cell according to claim 5, characterized in that The first single-piece replacement structure (4) and the second single-piece replacement structure (5) are both arranged at three intervals along the circumference of the single piece, and the number of pull rod seats (23) on the fixing plate (21) and the pressing plate (22) is also correspondingly arranged at three.

7. The electrolytic cell according to claim 5 or 6, characterized in that The surface of the pulling block (43, 53) used for contacting the single piece is set as an arc surface; and positioning holes for bolt connection are correspondingly provided on the single piece and the pulling block (43, 53).

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