A kind of easily disassembled electrolytic cell structure

Abstract

The utility model relates to electrolytic cell dismounting device technical field, and disclose an easily disassembled electrolytic cell structure, use in the transportation and dismounting process of electrolytic cell, the both ends of electrolytic cell are provided with fixed end plate and mobile end plate respectively, electrolytic cell passes through the pull rod, keeps in the fixed end plate and the compressed state between mobile end plate, electrolytic cell still includes the spacing rod that penetrates fixed end plate, mobile end plate and all electrolytic cell, electrolytic cell bottom is provided with liftable support, the bolt groove of downward opening is seted up in the both sides lower end edge of electrolytic cell, the spacing rod is worn in all the bolt groove of electrolytic cell, the utility model has the function that can be independently supported, height adjustable and keep fastening when dismounting, solve the problem that because single cell leaks and must be disassembled and repaired in whole in prior art, and when dismounting, cell is easy to scatter frame.

Description

Technical Field

[0001] This utility model relates to the technical field of electrolysis chamber disassembly device, specifically to an easily disassembled electrolysis cell structure. Background Technology

[0002] As a core piece of equipment in hydrogen production, alkaline electrolyzers typically employ a structure where hundreds of circular electrolysis chambers are horizontally stacked and compressed into a single unit by pressure applied through end plates and threaded screws. This "integral clamping" structure is the mainstream and mature technological foundation for achieving high sealing performance and stable operation of the electrolyzer, and is crucial for ensuring large-scale industrial applications of hydrogen production through electrolysis.

[0003] However, this technology has an inherent and long-standing drawback: if a leak is detected in one or more electrolysis cells during operation, the entire electrolytic cell, weighing tens of tons, must be transported from the site to a dedicated assembly workshop for complete disassembly before the faulty cell in the middle can be replaced. This process is extremely time-consuming and costly, causing production stoppages and resulting in significant economic losses for users. Therefore, developing a technology that enables rapid, accurate, and safe on-site single-cell replacement has become a critical technological bottleneck that urgently needs to be overcome in this field. Summary of the Invention

[0004] (I) Technical problem to be solved: In view of the shortcomings of the existing technology, this utility model provides an easy-to-disassemble electrolytic cell structure, which has the functions of independent support, adjustable height and keeping it tight during disassembly. It solves the problem that the existing technology requires the whole cell to be returned to the factory for disassembly and repair due to leakage of a single cell, and the cells are easy to fall apart during disassembly.

[0005] (II) Technical solution: In order to achieve the above-mentioned purpose of being independently supportable, height adjustable and kept secure during disassembly, this utility model provides the following technical solution: an easy-to-disassemble electrolytic cell structure, used in the transportation and disassembly process of electrolytic cells, wherein the two ends of the electrolytic cell are respectively provided with a fixed end plate and a movable end plate.

[0006] The electrolytic cell includes horizontally arranged electrolytic chambers and a pull rod that passes through the fixed end plate and the movable end plate; the electrolytic cell is held in a pressed state between the fixed end plate and the movable end plate by the pull rod.

[0007] The electrolytic cell also includes a limiting rod that penetrates the fixed end plate, the movable end plate, and all the electrolysis chambers.

[0008] The bottom of the electrolytic cell is equipped with a liftable support.

[0009] The lower edges of both sides of the electrolysis chamber are provided with downward-opening bolt grooves, and the limiting rod passes through the bolt grooves of all the electrolysis chambers.

[0010] Preferably, the electrolysis chamber is a circular electrolysis chamber.

[0011] Preferably, the upper end of the electrolysis chamber is provided with a double-hole lifting lug, the double-hole lifting lug including an installation hole and a lifting hole, and a pull rod is provided inside the installation hole.

[0012] Preferably, all the electrolysis chambers are evenly divided into at least two chamber groups, and the lifting holes of the electrolysis chambers within the same chamber group are arranged coaxially; the axial positions of the lifting holes between adjacent chamber groups are staggered.

[0013] Preferably, both the movable end plate and the fixed end plate have locking holes arranged in a circular array and corresponding in position. The pull rod is disposed inside the locking holes, and both ends of the pull rod are fixed to the outer surfaces of the movable end plate and the fixed end plate by fastening bolts.

[0014] Preferably, the lower part of the electrolytic cell is provided with a track, and a cylinder is provided at one end of the track. The support slides on the track by being pushed by the cylinder.

[0015] Preferably, the bracket includes a support panel that fits with the lower surface of the electrolysis chamber, and the support panel can simultaneously support a chamber group consisting of multiple electrolysis chambers; the bracket also includes a lifting mechanism that drives the support panel to rise and fall as a whole.

[0016] Preferably, the lifting mechanism is a scissor lift platform, a hydraulic cylinder, or an electric push rod.

[0017] Preferably, the bottom of the bracket is equipped with a straight wheel.

[0018] Preferably, both ends of the limiting rod are fixed to the outer surfaces of the movable end plate and the fixed end plate by fastening bolts.

[0019] (III) Beneficial Effects: Compared with the prior art, the present invention provides an easy-to-disassemble electrolytic cell structure with the following beneficial effects: 1. The easy-to-disassemble electrolytic cell structure, by opening a downward-opening bolt groove at the bottom edge of the electrolytic cell, is fundamentally different from the structure using closed round holes or ordinary through holes in the prior art. In the prior art, once the pull rod is loosened, the entire electrolytic cell stack will easily fall apart due to the loss of restraint, making local operation impossible. However, in the disassembly process of the present invention, the limiting rod does not need to be disassembled. The limiting rod is inserted in the bolt groove and can serve as a guide rail during disassembly, and can also continuously play a radial limiting role, ensuring that the remaining cells remain aligned and stable throughout the process of vertically pushing out the target cell. This overcomes the industry technical bottleneck of "disassembly leading to collapse" and realizes safe and efficient on-site replacement of the cells.

[0020] 2. This easily disassembled electrolytic cell structure, through the configuration of a movable support that can lift the entire cell group, overcomes the limitations of existing electrolytic cells that can only be hoisted and pressed as a whole. In existing technologies, if leaks are found in some electrolytic cells during operation, the entire electrolytic cell must be transported back to the assembly workshop for complete disassembly before the problematic cell can be replaced. This process is time-consuming and costly. This invention logically divides the entire electrolytic cell into several cell groups, with a single movable support serving all groups. During maintenance, simply move the support to below the faulty group, and operate the lifting mechanism to lift the entire group, separating it from the main electrolytic cell. This greatly simplifies the operation and process, minimizing maintenance workload and risks.

[0021] 3. This easily disassembled electrolytic cell structure, through its innovative design of employing double-hole lifting lugs arranged coaxially within the same group and staggered between groups, solves the problems of arbitrary lifting lug layout and difficulty in accurately hooking lifting equipment in dense spaces in existing technologies. This design allows the hooks of the lifting equipment to be lowered vertically without interference in the staggered space when disassembling any group, precisely engaging with the coaxially arranged lifting lug holes. This enables rapid and stable lifting and replacement of groups, greatly improving the accuracy and efficiency of on-site maintenance operations. Attached Figure Description

[0022] Figure 1 This is a complete schematic diagram of the electrolytic cell of this utility model.

[0023] Figure 2 This is a schematic diagram of a single electrolysis chamber of this utility model on a support.

[0024] Figure 3 This is a front view schematic diagram of the complete structure of this utility model.

[0025] Figure 4 This is a schematic diagram showing the distribution of lifting holes in adjacent chamber groups of this utility model.

[0026] Figure 5 This is a diagram showing the process of lifting a single chamber of this utility model.

[0027] Figure 6 This is a schematic diagram of a single-piece electrolysis chamber.

[0028] In the diagram: 1. Electrolytic cell; 11. Fixed end plate; 12. Moving end plate; 13. Pull rod; 14. Limiting rod; 15. Locking hole; 2. Electrolytic chamber; 21. Bolt groove; 22. Double-hole lifting lug; 221. Mounting hole; 222. Lifting hole; 3. Bracket; 31. Support panel; 32. Lifting mechanism; 33. Straight wheel; 4. Track; 41. Cylinder. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 An easily disassembled electrolytic cell structure is disclosed for use in the transportation and disassembly process of electrolytic cell 1. The electrolytic cell 1 has a fixed end plate 11 and a movable end plate 12 at both ends. The electrolytic cell 1 includes horizontally arranged electrolytic chambers 2, which are circular in this invention. The electrolytic cell 1 also includes a pull rod 13 that penetrates the fixed end plate 11 and the movable end plate 12 to limit the electrolytic chamber 2 between the two end plates. The pull rod 13 is evenly distributed along the circumference. The pull rods 13, which pass through the bolt grooves 21 and mounting holes 221, are equipped with insulating sleeves to prevent the bolts from conducting electricity. The pull rods 13 passing through the mounting holes 221 are also known as locking rods. Their length and number vary depending on the application requirements. These locking rods are only used as auxiliary tools during installation or maintenance; after installation or maintenance is completed, all locking rods are removed. The electrolytic cell 1 is held in a compressed state between the fixed end plate 11 and the movable end plate 12 by the pull rods 13. The pull rod 13 and the end plate are existing technologies, and their specific distribution and installation will not be described in detail here. The electrolytic cell 1 also includes a limiting rod 14 that passes through the fixed end plate 11, the movable end plate 12 and all the electrolytic cells 2. The bottom of the electrolytic cell 1 is provided with a liftable bracket 3. The lower edges of both sides of the electrolytic cells 2 are provided with downward-opening bolt grooves 21. In actual use, the area of ​​the bolt grooves 21 cannot exceed the sealing surface of the cell to avoid affecting the sealing performance of the electrolytic cells 2. The limiting rod 14 passes through the bolt grooves 21 of all the electrolytic cells 2 and is fixed at both ends to the outer surface of the movable end plate 12 and the fixed end plate 11 by fastening bolts. Therefore, when the electrolytic cells 2 are lifted, the target cell rises vertically along the limiting rod 14, and its bolt grooves 21 slide on the limiting rod 14. This avoids the problem in the prior art that the electrolytic cells 2 are easily disintegrated due to loss of restraint, making it impossible to perform local operations. This realizes the partial disassembly of the electrolytic cells 2 inside the electrolytic cell 1.

[0031] Please see Figures 1-4The upper end of the electrolysis chamber 2 is provided with a double-hole lifting lug 22. Only the lifting lugs of the first and last two electrolysis chambers 2 of each chamber group are shown in the figure. The pull rod 13 must be staggered from the double-hole lifting lug 22 while the entire electrolysis cell 1 is sealed. The double-hole lifting lug 22 includes an installation hole 221 and a lifting hole 222. The installation hole 221 is used to pass the pull rod 13 through. One of the two holes is the lifting hole 222, and the other hole is used as a temporary installation hole 221 during installation and disassembly. The pull rod 13 is passed through the installation hole 221 and fastened at both ends. The pull rod 13 has a variety of lengths that can be selected for installation and disassembly according to actual use requirements. During installation, the electrolysis chamber 2 is connected in series between the fixed end plate 11 and the movable end plate 12 through the pull rod 13 in the installation hole 221. All electrolysis chambers 2 are evenly divided into at least two chamber groups. In this embodiment, there are a total of 300 electrolysis chambers 2, with each chamber group consisting of 20-30 chambers, distributing the total weight to be lifted during replacement. The lifting holes 222 of the electrolysis chambers 2 within the same chamber group are arranged coaxially, and the axial positions of the lifting holes 222 between adjacent chamber groups are staggered. This solves the problem of arbitrary lifting lug layout and difficulty in accurately hooking lifting equipment in dense spaces in the prior art. This design allows the hooks of the lifting equipment to be lowered vertically without interference in the staggered space when disassembling any group, accurately engaging with the coaxially arranged lifting lug holes, realizing the rapid and stable lifting and replacement of groups, and greatly improving the accuracy and efficiency of on-site maintenance operations.

[0032] Please see Figure 3 Both the movable end plate 12 and the fixed end plate 11 are provided with locking holes 15 distributed along the center of the circle and corresponding in position. The number of locking holes 15 is determined according to the actual situation such as the size and number of electrolytic chambers 2. The pull rod 13 is set inside the locking hole 15. The two ends of the pull rod 13 are fixed to the outer surface of the movable end plate 12 and the fixed end plate 11 by fastening bolts to ensure that the electrolytic chamber 2 between the two end plates is limited.

[0033] Please see Figure 3The lower part of the electrolytic cell 1 is provided with a track 4, and a cylinder 41 is provided at one end of the track 4. The support 3 slides on the track 4 by being pushed by the cylinder 41. A straight wheel 33 is installed at the bottom of the support 3. When a leak occurs in an electrolytic cell 2, the cylinder 41 can be controlled using existing technology to push the support 3 to the bottom of the cell group where the corresponding electrolytic cell 2 is located. The support 3 includes a support panel 31 that fits with the lower surface of the electrolytic cell 2. The support panel 31 can support a cell group consisting of multiple electrolytic cells 2 at the same time. The support 3 also includes a drive to lift the support panel 31 as a whole. The lifting mechanism 32; In this embodiment, the lifting mechanism 32 is an existing lifting technology, specifically a scissor lift platform, hydraulic cylinder or electric push rod. During maintenance, it is only necessary to move the bracket 3 to below the faulty group, and operate the lifting mechanism 32 to lift the group as a whole, so as to separate it from the main body of the electrolytic cell 1. This greatly simplifies the operation object and process. Compared with the existing technology, which requires the electrolytic cell 1 to be transported back to the assembly workshop for overall disassembly before the faulty electrolytic chamber 2 can be replaced, this utility model minimizes the maintenance workload and risk.

[0034] In summary, this easily disassembled electrolytic cell structure systematically solves the problem of existing technologies requiring the entire electrolytic cell 1 to be returned to the factory for maintenance through three core innovations. First, by creating a downward-opening bolt groove 21 at the bottom of the electrolysis chamber 2, the limiting rod 14 passing through it does not need to be pulled out during disassembly. It serves as a lifting guide and continuously prevents the other chambers from falling apart, overcoming the bottleneck of "disassembly leading to disintegration" and enabling safe on-site replacement of individual chambers. Second, by configuring a movable and lifting bracket 3, the electrolytic cell 1 is logically grouped. During maintenance, only the faulty chamber group needs to be moved and lifted, completely changing the cumbersome mode of traditional overall hoisting and disassembly, greatly reducing the workload and cost of maintenance. Finally, by adopting double-hole lifting lugs 22 and using a precise layout of coaxiality within the same group and staggered between groups, an interference-free operating space is created for the lifting equipment, ensuring the accuracy and efficiency of hoisting operations during maintenance.

[0035] The use of this utility model mainly includes two stages: installation and disassembly / replacement. During installation, firstly, through the mounting holes 221, one electrolytic chamber 2 is strung onto the pull rod 13. The upper part of the electrolytic chamber is hung on the pull rod 13, and the bottom bracket 3 is used to position and move it in sequence. Then, the chamber is moved to the fixed end plate 11 of the electrolytic cell 1, and the lifting holes 222 of each group of chambers are staggered. Then, the pull rods 13 distributed in a circular array are used to move the moving end plate 12. The moving end plate 12 is used to push all the electrolytic chambers 2 towards the fixed end plate 11. Finally, the electrolytic chambers 2 are tightly clamped between the fixed end plate 11 and the moving end plate 12, and finally tightened with fastening bolts to complete the assembly.

[0036] When an area inspection of the electrolysis chamber 2 is required, the disassembly process is as follows: First, the movable support 3 is moved directly below the target chamber group via the track 4 and cylinder 41. Then, the pull rods 13 distributed in a circumferential array on the electrolysis cell 1 are removed to release the axial clamping force, but the limiting rods 14 are still inserted in all the bolt slots 21. Then, the lifting mechanism 32 is activated to drive the support panel 31 to lift the chamber group as a whole. At this time, the target chamber group rises vertically along the limiting rods 14 with its group, and its bolt slots 21 slide on the limiting rods 14 until it is separated from the adjacent chamber group, forming an operating space. Since the lifting holes 222 of the adjacent chamber groups are staggered, the lifting equipment can hook the lifting hole 222 of the target electrolysis chamber group without obstruction and lift it away. After the intact electrolysis chamber group is lifted into the empty space, the above steps are reversed: the support 3 is lowered to reset the chamber group, and finally the fastening bolts of the pull rods 13 are retightened to complete the replacement.

[0037] When it is necessary to disassemble and repair the electrolysis chamber 2 piece by piece, the disassembly process is as follows: First, use the tie rod 13 to fix the electrolysis chamber 2 that needs to be repaired in sections, leaving the chamber that needs to be repaired free. The tie rod 13 does not need to be completely disassembled without affecting the lifting of the target chamber, but the locking nut at one end needs to be removed to ensure that the target chamber is in an active state. After determining the position of the target chamber, the chamber that needs to be repaired can be lifted out for repair directly using a crane.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A disassembleable electrolytic cell structure, used in the transportation and disassembly process of an electrolytic cell (1), wherein a fixed end plate (11) and a movable end plate (12) are respectively provided at both ends of the electrolytic cell (1); the electrolytic cell (1) includes horizontally arranged electrolytic chambers (2), and a pull rod (13) passing through the fixed end plate (11) and the movable end plate (12); the electrolytic cell (1) is held in a pressed state between the fixed end plate (11) and the movable end plate (12) by the pull rod (13); characterized in that: The electrolytic cell (1) also includes a limiting rod (14) that passes through the fixed end plate (11), the movable end plate (12) and all the electrolytic chambers (2); the bottom of the electrolytic cell (1) is provided with a liftable bracket (3); the lower edges of both sides of the electrolytic chamber (2) are provided with downward-opening bolt grooves (21), and the limiting rod (14) passes through the bolt grooves (21) of all the electrolytic chambers (2).

2. The easily disassembled electrolytic cell structure according to claim 1, characterized in that: The electrolysis chamber (2) is a circular electrolysis chamber (2).

3. The easily disassembled electrolytic cell structure according to claim 1, characterized in that: The upper end of the electrolysis chamber (2) is provided with a double-hole lifting lug (22), which includes a mounting hole (221) and a lifting hole (222). The mounting hole (221) is used to pass through the pull rod (13).

4. The easily disassembled electrolytic cell structure according to claim 3, characterized in that: All the electrolytic cells (2) are evenly divided into at least two cell groups, and the lifting holes (222) of the electrolytic cells (2) located in the same cell group are arranged coaxially; the axial positions of the lifting holes (222) between two adjacent cell groups are staggered.

5. The easily disassembled electrolytic cell structure according to claim 1, characterized in that: Both the movable end plate (12) and the fixed end plate (11) are provided with locking holes (15) distributed along the center of the circle and corresponding in position. The pull rod (13) is disposed inside the locking hole (15). The two ends of the pull rod (13) are fixed to the outer surface of the movable end plate (12) and the fixed end plate (11) by fastening bolts.

6. The easily disassembled electrolytic cell structure according to claim 1, characterized in that: The lower part of the electrolytic cell (1) is provided with a track (4), and a cylinder (41) is provided at one end of the track (4). The support (3) slides on the track (4) by being pushed by the cylinder (41).

7. The easily disassembled electrolytic cell structure according to claim 6, characterized in that: The bracket (3) includes a support panel (31) that fits with the lower surface of the electrolysis chamber (2). The support panel (31) can simultaneously support a chamber group consisting of multiple electrolysis chambers (2). The bracket (3) also includes a lifting mechanism (32) that drives the support panel (31) to rise and fall as a whole.

8. The easily disassembled electrolytic cell structure according to claim 7, characterized in that: The lifting mechanism (32) is a scissor lift platform, a hydraulic cylinder, or an electric push rod.

9. The easily disassembled electrolytic cell structure according to claim 1, characterized in that: The bracket (3) is equipped with a straight wheel (33) at its bottom.

10. A disassembled electrolytic cell structure according to any one of claims 1-9, characterized in that: The two ends of the limiting rod (14) are fixed to the outer surfaces of the movable end plate (12) and the fixed end plate (11) by fastening bolts.

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