electrolytic cell

Abstract

The application discloses an electrolytic cell, and relates to the technical field of electrolytic cells, wherein the electrolytic cell comprises a plurality of polar plates, sealing gaskets and limiting rings which are stacked along a first direction, the polar plates extend along a second direction, the first direction is perpendicular to the second direction, the polar plate comprises a polar frame, the central axis of the polar frame extends along the first direction, the polar frame has a first annular region, the first annular region is provided with a plurality of spaced sealing ring grooves, the sealing ring grooves are arranged around the central axis of the polar frame, the sealing gaskets are clamped between two adjacent polar frames, the limiting rings are protruded from at least one of the sealing gaskets and the polar frame along the first direction, the other one of the sealing gaskets and the polar frame is provided with a limiting ring groove in correspondence, and the limiting ring is inserted into the limiting ring groove; wherein the polar frame is limited and matched in the radial direction by the limiting ring and the sealing gasket on the inner and outer circumferential sides of the first annular region. The technical scheme provided by the application aims to reduce the failure risk of the sealing gasket, thereby improving the sealing performance of the electrolytic cell.

Description

Technical Field

[0001] This application relates to the field of electrolytic cell technology, and in particular to an electrolytic cell. Background Technology

[0002] Electrolytic cells typically contain multiple electrodes arranged in sequence, with sealing gaskets sandwiched between the electrode frames of adjacent plates to ensure system sealing. In related technologies, the electrode frames form a dense water line by setting multiple sealing ring grooves near the outer periphery. When the sealing gaskets are squeezed by the electrode frames, they are easily squeezed outward due to pressure. This phenomenon may cause the sealing gaskets to be sheared or even torn by the dense water line, resulting in loss of sealing effect. Utility Model Content

[0003] The main objective of this application is to propose an electrolytic cell designed to reduce the risk of gasket failure, thereby improving the sealing performance of the electrolytic cell.

[0004] To achieve the above objectives, the electrolytic cell proposed in this application includes:

[0005] Multiple electrode plates are stacked along a first direction and extend along a second direction, the first direction and the second direction being perpendicular. Each electrode plate includes an electrode frame, the central axis of which extends along the first direction. The electrode frame has a first annular region, and the first annular region is provided with multiple spaced sealing ring grooves, the sealing ring grooves being arranged around the central axis of the electrode frame.

[0006] A sealing gasket, sandwiched between two adjacent pole frames; and

[0007] A limiting ring is provided, which protrudes along the first direction from at least one of the sealing gasket and the pole frame, and the other of the sealing gasket and the pole frame is provided with a limiting ring groove, and the limiting ring is inserted into the limiting ring groove.

[0008] In the first annular region, the pole frame is engaged in a limiting fit in the second direction by the limiting ring and the sealing gasket on both the inner and outer circumferential sides.

[0009] In one embodiment, the limiting ring is fixed to the sealing gasket, and the limiting ring groove is disposed in the pole frame.

[0010] In one embodiment, the limiting rings are distributed on both opposite sides of the sealing gasket, and the two adjacent pole frames are provided with limiting ring grooves. The limiting rings and the limiting ring grooves into which they are inserted are engaged in a limiting fit in the second direction.

[0011] In one embodiment, the limiting ring includes a first limiting ring located on the inner circumferential side of the first annular region and a second limiting ring located on the outer circumferential side of the first annular region. The first limiting ring is fixed on both opposite sides of the sealing gasket. The inner circumferential side of the second limiting ring is connected to the outer circumferential side of the sealing gasket, and both opposite sides of the second limiting ring protrude relative to the sealing gasket.

[0012] In one embodiment, on one side of the sealing gasket, the protrusion height of the limiting ring is less than the depth of the corresponding limiting ring groove.

[0013] In one embodiment, the protrusion height of the limiting ring relative to the sealing gasket is 1 mm to 3 mm.

[0014] In one embodiment, the limiting ring is fixed on one side of the sealing gasket. In two adjacent pole frames, one is provided with the limiting ring groove, and the other is provided with an avoidance ring groove opposite to the limiting ring groove. The height of the limiting ring protruding relative to the sealing gasket is greater than the depth of the corresponding limiting ring groove. The limiting ring abuts against the sealing gasket, and the sealing gasket abuts against the groove wall of the avoidance ring groove.

[0015] In one embodiment, the sealing gasket is provided with a connecting ring groove, at least a portion of the limiting ring is inserted into the connecting ring groove, and is upper-positioned in the connecting ring groove in the second direction.

[0016] In one embodiment, the limiting ring and the sealing gasket are integrally formed; or, the limiting ring is connected to the sealing gasket by bonding or welding.

[0017] In one embodiment, the limiting ring is fixed to the pole frame, and the limiting ring groove is disposed in the sealing gasket.

[0018] In one embodiment, in two adjacent pole frames, one is provided with the limiting ring, and the other is provided with an avoidance ring groove opposite to the limiting ring groove. The height of the limiting ring protruding relative to the pole frame is greater than the depth of the corresponding limiting ring groove. The limiting ring abuts against the bottom wall of the limiting ring groove, and the sealing gasket abuts against the wall of the avoidance ring groove.

[0019] In one embodiment, the limiting ring and the pole frame are integrally formed.

[0020] In one embodiment, the height of the limiting ring protruding relative to the pole frame is 3mm to 6mm.

[0021] In one embodiment, the circumference of the limiting ring is 3 mm to 8 mm.

[0022] In one embodiment, the limiting ring is configured to be made of a rigid material.

[0023] In one embodiment, the inner and outer peripheral edges of the first annular region are provided with a first annular surface, the two limiting rings are respectively located on opposite sides of the two first annular surfaces, the sealing ring groove is located between the two first annular surfaces, and a second annular surface is also provided between each pair of sealing ring grooves;

[0024] The two adjacent pole frames are a first pole frame and a second pole frame, respectively. On the adjacent sides of the first pole frame and the second pole frame, the second annular surface of the first pole frame is flush with the first annular surface, and the second annular surface of the second pole frame is lower than the first annular surface.

[0025] In one embodiment, the pole frame is provided with a plurality of second annular surfaces. For the second pole frame, in the direction from one of the first annular surfaces to the other, the height of each second annular surface first decreases and then increases.

[0026] In the technical solution of this application, limiting rings are provided on both the inner and outer circumferential sides of the first annular region, and the pole frame forms a limiting fit with the sealing gasket in the radial direction through the limiting rings. Through this design, the second annular region of the sealing gasket is effectively constrained in both the radial and inner directions, thereby significantly suppressing its radial extrusion tendency during axial compression, especially preventing excessive extension of the sealing gasket outwards. Furthermore, since the second annular region is constrained on both the inner and outer sides, its thickness distribution under compression is more uniform and stable, allowing the thickness of the second annular region to remain within a relatively stable range, preventing excessive thinning. Simultaneously, it prevents the edge or root of the sealing gasket from embedding into the sharp edge groove of the dense water line due to excessive deformation, thus greatly reducing the risk of the sealing gasket being sheared and torn by the dense water line. Therefore, the technical solution of this application can reduce the failure risk of the sealing gasket, thereby improving the sealing performance of the electrolytic cell. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 This is a partial structural schematic diagram of an embodiment of the electrolytic cell provided in this application;

[0029] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along BB;

[0031] Figure 4 for Figure 3 A magnified view of the left side of the structure;

[0032] Figure 5 for Figure 4 A magnified view of the area within the rectangular frame;

[0033] Figure 6 for Figure 1 Exploded view of the structure;

[0034] Figure 7 for Figure 6 A magnified view of a section at point C;

[0035] Figure 8 The electrolytic cell provided in this application is Figure 4 A cross-sectional structural diagram of another embodiment at the rectangular frame;

[0036] Figure 9 for Figure 8 A schematic diagram of the structure of the sealing gasket in the diagram;

[0037] Figure 10 for Figure 9 A magnified view of a section at point D;

[0038] Figure 11 The electrolytic cell provided in this application is Figure 4 A cross-sectional structural diagram of another embodiment at the rectangular frame;

[0039] Figure 12 for Figure 11 A schematic diagram of the structure of the electrode plate corresponding to the second electrode frame in the diagram;

[0040] Figure 13 for Figure 12 A magnified view of a section at point E in the middle.

[0041] Explanation of icon numbers:

[0042] 100. Electrode plate; 110. Electrode frame; 111. First electrode frame; 112. Second electrode frame;

[0043] 120. First annular region; 121. Sealing annular groove; 122. Dense-textured water line; 123. First annular surface; 124. Second annular surface; 130. Clearance annular groove;

[0044] 200. Sealing gasket; 210. Connecting annular groove; 220. Second annular region;

[0045] 300, Limiting ring; 310, First limiting ring; 320, Second limiting ring; 400, Limiting ring groove.

[0046] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0049] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0050] This application proposes an electrolytic cell.

[0051] Please see Figures 1 to 5 In one embodiment of this application, the electrolytic cell includes:

[0052] Multiple electrode plates 100 are stacked along a first direction and extend along a second direction. The first direction and the second direction are perpendicular. Each electrode plate 100 includes an electrode frame 110. The central axis of the electrode frame 110 extends along the first direction. The electrode frame 110 has a first annular region 120. The first annular region 120 is provided with multiple spaced sealing annular grooves 121. The sealing annular grooves 121 are arranged around the central axis of the electrode frame 110.

[0053] Sealing gasket 200, sandwiched between two adjacent pole frames 110; and

[0054] A limiting ring 300 is provided in one of the sealing gasket 200 and the pole frame 110 along the first direction. The other of the sealing gasket 200 and the pole frame 110 is provided with a limiting ring groove 400, and the limiting ring 300 is inserted into the limiting ring groove 400.

[0055] In the first annular region 120, the pole frame 110 is radially positioned by the limiting ring 300 and the sealing gasket 200 on both the inner and outer circumferential sides.

[0056] It is understood that the sealing gasket 200 has an annular structure adapted to the pole frame 110. During assembly, it is coaxially arranged with the pole frame 110, and the central axis basically coincides to ensure uniform force on the sealing interface. That is, the pole frame 110, the first annular region 120, the sealing ring groove 121, and the sealing gasket 200 all surround the central axis extending along the first direction to form a circumferentially closed annular structure. It should be noted that the pole plate 100 can be a circular pole plate, and correspondingly, the related annular structures such as the pole frame 110, the first annular region 120, the sealing ring groove 121, and the sealing gasket 200 are in a matching annular shape. Of course, the pole plate 100 can also be a polygonal pole plate, such as a square pole plate, a pentagonal pole plate, a hexagonal pole plate, etc., and correspondingly, the above-mentioned related annular structures are in a matching polygonal pole plate.

[0057] It is understood that the second direction is perpendicular to the first direction, which is also perpendicular to the surface of the electrode 100. It should be noted that this application does not limit the two directions to be absolutely perpendicular; the first and second directions can also be approximately perpendicular. Taking the electrode 100 as a circular electrode as an example, the second direction is the radial direction of the electrode 100.

[0058] The end face of the pole frame 110 is provided with multiple sealing annular grooves 121 arranged radially from the inside to the outside, thereby forming a dense water line 122. The dense water line 122 cooperates with the sealing gasket 200 to achieve multiple seals. The first annular region 120 is also the region where the dense water line 122 is located. This region is usually close to the outer periphery of the pole frame 110. The part of the sealing gasket 200 opposite to this region is also close to its outer periphery. For ease of description, this part of the sealing gasket 200 is referred to as the second annular region 220.

[0059] In the technical solution of this application, limiting rings 300 are provided on both the inner and outer circumferential sides of the first annular region 120, and the pole frame 110 forms a limiting fit with the sealing gasket 200 in the radial direction through the limiting rings 300. Through this design, the second annular region 220 of the sealing gasket 200 is effectively constrained in both the radial and inner directions, thereby significantly suppressing the radial extrusion tendency generated during axial compression, especially avoiding excessive extension of the sealing gasket 200 to the periphery. Furthermore, since the second annular region 220 is limited on both the inner and outer sides, its thickness distribution under compression is more uniform and stable, so that the thickness of the second annular region 220 can be maintained within a relatively stable range, without excessive thinning. At the same time, it can prevent the edge or root of the sealing gasket 200 from being embedded in the sharp edge groove of the dense water line 122 due to excessive deformation, which can greatly reduce the risk of the sealing gasket 200 being sheared and torn by the dense water line 122. Therefore, the technical solution of this application can reduce the failure risk of the sealing gasket 200, thereby improving the sealing performance of the electrolytic cell.

[0060] The limiting ring 300 protrudes from the first of the sealing gasket 200 and the pole frame 110, while the second of the sealing gasket 200 and the pole frame 110 is provided with a limiting ring groove 400. There are various ways to cooperate between the limiting ring 300 and the first one, such as a fixed connection or a limiting connection at least in the radial direction. There are also various ways to fix the connection, such as integrally forming with the first one or fixing it by means of bonding, welding, fusion, etc.

[0061] Between the limiting ring 300 and the second element, the opening of the limiting ring groove 400 on the second element is opened along the first direction. The limiting ring groove 400 will have two side walls that are radially opposite to each other. After the limiting ring 300 is inserted into the limiting ring groove 400, these two side walls can provide radial limiting for the limiting ring 300. The shapes of the limiting ring 300 and the limiting ring groove 400 can be matched to achieve a suitable insertion, thereby ensuring the radial limiting effect. The cross-sectional shape of the limiting ring groove 400 can be rectangular or trapezoidal, or have rectangular and trapezoidal groove segments distributed sequentially along the depth direction. Of course, the shapes of the two can also be different, leaving appropriate deformation space, so that reliable radial limiting fit can be achieved through appropriate deformation after assembly.

[0062] In this way, the limiting ring 300 can be fixed at least radially to both the sealing gasket 200 and the pole frame 110, thereby ensuring that the relative position of the second annular region 220 of the sealing gasket 200 and the pole frame 110 remains approximately unchanged. This ensures that the second annular region 220 of the sealing gasket 200 can cooperate with the fine-textured water line 122 of the first annular region 120 of the pole frame 110 to achieve a reliable sealing effect.

[0063] Optionally, limiting rings 300 are distributed on both opposite sides of the sealing gasket 200, and the limiting rings 300 and their inserted limiting ring grooves 400 are radially limited. It can be understood that the opposite sides of the sealing gasket 200 are distributed along the first direction. By providing limiting rings 300 on both opposite sides of the sealing gasket 200, a reliable limiting fit can be achieved between the sealing gasket 200 and the adjacent two pole frames 110, which helps to reduce the failure risk of the sealing gasket 200.

[0064] Furthermore, on one side of the sealing gasket 200, the protrusion height of the retaining ring 300 is less than the depth of the corresponding retaining ring groove 400. It can be understood that the retaining ring groove 400 corresponding to the retaining ring 300 is also the retaining ring groove 400 into which it is inserted. Since the protrusion height of the retaining ring 300 on this side is smaller than the depth of the retaining ring groove 400, in the initial state of assembly, the retaining ring 300 on this side will not abut against the bottom wall of the retaining ring groove 400, thus reserving space for the compression deformation of the elastic gasket. After being compressed during assembly, the retaining ring 300 will be closer to the bottom wall of the retaining ring groove 400. In subsequent operation, after the elastic gasket is inevitably thinned to a certain extent, the retaining ring 300 can abut against the bottom wall of the retaining ring groove 400, thereby providing support and ensuring that the elastic gasket is not over-compressed, which helps reduce the risk of failure of the sealing gasket 200. The limiting rings 300 on both sides can be set opposite to each other in the first direction or staggered.

[0065] Optionally, a protruding limiting ring 300 is distributed on one side of the sealing gasket 200, and the pole frame 110 on the other side of the sealing gasket 200 is provided with a relief ring groove 130 opposite to the limiting ring groove 400. The protrusion height of the limiting ring 300 is greater than the depth of the corresponding limiting ring groove 400. The limiting ring 300 abuts against the sealing gasket 200, and the sealing gasket 200 abuts against the groove wall of the relief ring groove 130. Specifically, after the limiting ring 300 is inserted into the corresponding limiting ring groove 400, when a preload is applied during assembly, the limiting ring 300 can apply a resisting force to the sealing gasket 200 in the first direction, thereby squeezing the sealing gasket 200 at the corresponding position into the clearance ring groove 130, and causing the sealing gasket 200 to abut against the groove wall of the clearance ring groove 130. Thus, the sealing gasket 200 can be limited and engaged with the pole frame 110 on one side through the limiting ring 300, and on the other side, it can achieve a radial limited engagement with the pole frame 110 by being squeezed into the clearance ring groove 130. The cross-sectional shape of the clearance ring groove 130 can be rectangular or trapezoidal, etc. The difference between the protrusion height of the limiting ring 300 and the depth of the corresponding limiting ring groove 400 should be less than the depth of the corresponding clearance ring groove 130. The specific values ​​of these three parameters can be selected according to the actual application and are not limited here.

[0066] It should be noted that the above description only refers to the sealing gasket 200 and limits the distribution position of the limiting ring 300, but does not limit whether the limiting ring 300 and the sealing gasket 200 are fixedly connected, nor does it limit the forming position of the limiting ring groove 400. The limiting ring groove 400 can be formed on the sealing gasket 200 or on the pole frame 110. In fact, between the sealing gasket 200 and one of the adjacent pole frames 110, there can be both the limiting ring groove 400 formed on the pole frame 110 and the limiting ring groove 400 formed on the sealing gasket 200.

[0067] When the ring width of the limiting ring 300 is 3mm to 8mm, it can provide sufficient contact area and radial support stiffness while ensuring structural strength, thereby achieving a stable and reliable radial limiting effect. Specifically, the ring width of the limiting ring 300 can be 3mm, 4mm, 5mm, 6mm, 7mm, or 8mm. In other embodiments, it can also be 2mm, 2.5mm, 9mm, or 10mm.

[0068] When the limiting ring 300 is made of a rigid material, its structural rigidity is high, which can more effectively resist radial deformation, thereby providing a more reliable radial limiting effect. The material of the limiting ring 300 can be metal or engineering plastic, such as stainless steel, aluminum alloy, or high-strength plastics such as polyetheretherketone (PEEK) and polyoxymethylene (POM), which can be selected according to the working environment, corrosion resistance requirements, and assembly requirements of the electrolytic cell. In other embodiments, the limiting ring 300 can also be made of a non-rigid material.

[0069] In one implementation, please refer to Figure 6 , Figure 7 , Figure 9 and Figure 10 The limiting ring 300 is fixed to the sealing gasket 200, and the limiting ring groove 400 is provided on the pole frame 110. That is, the limiting ring 300 is pre-integrated with the sealing gasket 200 to form an integrated component. When assembling the electrolytic cell, the sealing gasket 200 and the limiting ring 300 can be installed together, thereby simplifying the assembly process and improving the overall assembly efficiency. In other embodiments, the limiting ring 300 can also be used as an independent component and placed separately in the corresponding position of the sealing gasket 200 or the pole frame 110 during the assembly process.

[0070] In this case, the retaining ring 300 and the sealing gasket 200 can be integrally molded. Specifically, when the retaining ring 300 is made of a rigid material, and the sealing gasket 200 is made of an elastic material, the two can be processed by insert molding, that is, the retaining ring 300 serves as an insert for the sealing gasket 200. It should be noted that the melting temperature of the retaining ring 300 should be lower than the processing temperature of the sealing gasket 200 to ensure that the integral part can be stably molded. When the retaining ring 300 is made of plastic, the two can also be integrally molded by a two-color injection molding process. In addition, when the sealing gasket 200 is made of rubber, the two can also be integrally molded by a vulcanization process.

[0071] Alternatively, the retaining ring 300 can be connected to the sealing gasket 200 by bonding or welding. That is, after the retaining ring 300 and the sealing gasket 200 are separately formed, they are stably connected by bonding or welding to form an integrated component. Specifically, the retaining ring 300 can be fixed to the surface of the sealing gasket 200 using adhesives; or the sealing gasket 200 can be partially melted and bonded to the retaining ring 300 using welding techniques such as hot melt welding or ultrasonic welding.

[0072] When the retaining ring 300 and the sealing gasket 200 are molded separately, please refer to Figure 5 and Figure 8 Alternatively, a connecting ring groove 210 can be provided in the sealing gasket 200, and a limiting ring 300 can be inserted into the connecting ring groove 210 and fitted with the connecting ring groove 210 in the second direction. The limiting ring 300 can be interference-fitted with the connecting ring groove 210, allowing the limiting ring 300 and the sealing gasket 200 to form an integrated assembly, facilitating their joint installation. Alternatively, the limiting ring 300 can first be fitted with the connecting ring groove 210 with an adaptation fit or clearance fit to achieve pre-positioning, and then the connection between the limiting ring 300 and the sealing gasket 200 can be achieved through bonding or welding, thereby increasing the connection area and improving the connection stability. All limiting rings 300 can be fitted with the sealing gasket 200 in this way, or only some of the limiting rings 300 can be fitted with the sealing gasket 200 in this way. Furthermore, the cross-sectional shape of the connecting ring groove 210 can be rectangular or trapezoidal, etc.

[0073] In one implementation, please refer to Figure 4 and Figure 5 The sealing gasket 200 has limiting rings 300 distributed on both opposite sides, and each of the adjacent pole frames 110 is provided with a limiting ring groove 400. The limiting rings 300 and their inserted limiting ring grooves 400 are in a limiting engagement in the second direction. Thus, on both opposite sides of the sealing gasket 200, the limiting rings 300 can be inserted into the corresponding limiting ring grooves 400, and are in a limiting engagement with the pole frames 110 on both sides in the radial direction.

[0074] Further, please refer to Figure 4 and Figure 5 The limiting ring 300 includes a first limiting ring 310 located on the inner circumference of the first annular region 120 and a second limiting ring 320 located on the outer circumference of the first annular region 120. A first limiting ring 310 is fixedly provided on each of the opposite sides of the sealing gasket 200. The inner circumference of the second limiting ring 320 is connected to the outer circumference of the sealing gasket 200, and both opposite sides of the second limiting ring 320 protrude relative to the sealing gasket 200. It can be understood that the opposite sides of the second limiting ring 320 are also distributed along the first direction. The protruding portions on both sides of the second limiting ring 320 can respectively engage with the limiting ring grooves 400 of the two pole frames 110. Simultaneously, the inner circumference of the second limiting ring 320 can also limit the sealing gasket 200, effectively restricting the sealing gasket 200 from being extruded outwards. In other embodiments, a second limiting ring 320 may be fixed on each of the opposite sides of the sealing gasket 200, and the two sides may be respectively limited and engaged with the pole frame 110 by different second limiting rings 320.

[0075] In this configuration, on one side of the sealing gasket 200, the protrusion height of the retaining ring 300 is less than the depth of the corresponding retaining ring groove 400. Thus, in the initial assembly state, there is a gap between the retaining ring 300 and the retaining ring groove 400 on that side, preventing rigid jamming during initial assembly and allowing space for the compression deformation of the elastic gasket. Specifically, the retaining ring grooves 400 on both pole frames 110 may have the same depth, but the protrusion heights of the retaining rings 300 on both sides may be different; alternatively, the retaining rings 300 on both sides may have the same protrusion height, but the retaining ring grooves 400 on the two pole frames 110 may have different depths; furthermore, the retaining ring grooves 400 on the two pole frames 110 may have different depths, and the protrusion heights of the retaining rings 300 on both sides may also be different. The protrusion height of the limiting ring 300 on the same side of the elastic gasket can be the same or different, and the depth of the limiting ring groove 400 on the same pole frame 110 can also be the same or different; in addition, on the same side, the numerical difference between the protrusion height of the limiting ring 300 and the corresponding depth of the limiting ring groove 400 can be the same or different.

[0076] When the protrusion height of the limiting ring 300 relative to the sealing gasket 200 is 1mm to 3mm, it can provide good radial limiting and axial support effects. This protrusion height can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc. In other embodiments, the protrusion height can be less than 1mm, for example, configured as 0.5mm or 0.8mm; or it can be greater than 3mm, for example, configured as 3.2mm or 3.5mm.

[0077] In one implementation, please refer to Figures 8 to 10The limiting ring 300 is fixed to the sealing gasket 200, and the limiting ring groove 400 is provided on the pole frame 110. The limiting ring 300 is fixed on one side of the sealing gasket 200. In two adjacent pole frames 110, one is provided with the limiting ring groove 400, and the other is provided with the clearance ring groove 130 opposite to the limiting ring groove 400. The height of the limiting ring 300 protruding relative to the sealing gasket 200 is greater than the depth of the corresponding limiting ring groove 400. The limiting ring 300 abuts against the sealing gasket 200, and the sealing gasket 200 abuts against the groove wall of the clearance ring groove 130. Specifically, after the limiting ring 300 is inserted into the corresponding limiting ring groove 400, when a pre-tightening force is applied during assembly, the limiting ring 300 can apply a resisting force to the sealing gasket 200 in the first direction, thereby squeezing the sealing gasket 200 at the corresponding position into the relief ring groove 130, and causing the sealing gasket 200 and the groove wall of the relief ring groove 130 to abut against each other. Thus, the sealing gasket 200 can be limited and engaged on one side by the limiting ring 300 and the side wall of the limiting ring groove 400 on the pole frame 110, and on the other side, it can be squeezed into the relief ring groove 130, thereby being limited in the radial direction by the side wall of the relief ring groove 130.

[0078] In one implementation, please refer to Figures 11 to 13 The limiting ring 300 is fixed to the pole frame 110, and the limiting ring groove 400 is provided on the sealing gasket 200. The material of the limiting ring 300 can be the same as or different from that of the pole frame 110. The limiting ring 300 can be integrally formed with the pole frame 110, or it can be formed separately and then fixed to the pole frame 110 by welding, bonding or other methods.

[0079] In one implementation, please refer to Figure 11 In two adjacent pole frames 110, one is provided with a limiting ring 300, and the other is provided with a clearance ring groove 130 opposite to the limiting ring groove 400. The height of the limiting ring 300 protruding from the pole frame 110 is greater than the depth of the corresponding limiting ring groove 400. The limiting ring 300 abuts against the bottom wall of the limiting ring groove 400, and the sealing gasket 200 abuts against the groove wall of the clearance ring groove 130. Specifically, after the limiting ring 300 is inserted into the corresponding limiting ring groove 400, when a pre-tightening force is applied during assembly, the limiting ring 300 can apply a resisting force to the sealing gasket 200 in the first direction, thereby squeezing the sealing gasket 200 at the corresponding position into the clearance ring groove 130, and making the sealing gasket 200 and the groove wall of the clearance ring groove 130 abut against each other. Thus, in two adjacent pole frames 110, one pole frame 110 can be radially upper limit matched by the limiting ring 300 and the side wall of the limiting ring groove 400 on the sealing gasket 200, and the other pole frame 110 can be radially upper limit matched by the side wall of the clearance ring groove 130 and the squeezed sealing gasket 200.

[0080] When the protrusion height of the limiting ring 300 relative to the pole frame 110 is 3mm to 6mm, it can have a good radial limiting effect and axial support effect. The protrusion height can be 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, etc. In other embodiments, the protrusion height can also be less than 3mm, for example, configured as 2mm or 2.5mm; or it can be greater than 6mm, for example, configured as 7mm or 8mm.

[0081] In one implementation, please refer to Figure 5 , Figure 8 and Figure 11 The inner and outer peripheral edges of the first annular region 120 are each provided with a first annular surface 123. Two limiting rings 300 are respectively located on opposite sides of the two first annular surfaces 123. A sealing ring groove 121 is located between the two first annular surfaces 123, and a second annular surface 124 is also provided between each pair of sealing ring grooves 121. The two adjacent pole frames 110 are respectively a first pole frame 111 and a second pole frame 112. On the adjacent sides of the first pole frame 111 and the second pole frame 112, the second annular surface 124 of the first pole frame 111 is flush with the first annular surface 123, and the second annular surface 124 of the second pole frame 112 is lower than the first annular surface 123. It can be understood that the dense water line 122 will extend from one of the first annular surfaces 123 through each sealing ring groove 121 and each second annular surface 124 to the other first annular surface 123, thereby forming an overall wavy path. On the first pole frame 111 side, since the second annular surface 124 is flush with the first annular surface 123, both the second annular surface 124 and the first annular surface 123 in this area can effectively contact the sealing gasket 200, providing continuous and uniform support. On the second pole frame 112 side, since the second annular surface 124 is lower than the first annular surface 123, this area forms a recessed structure. The second annular surface 124 and the sealing ring groove 121 are recessed relative to the first annular surface 123, forming a mating gap with the sealing gasket 200, thereby providing buffer space for the compression deformation of the sealing gasket 200. This structural design makes the contact pressure distribution of the sealing gasket 200 more uniform during the compression process, avoiding local stress concentration. Especially under high preload or uneven load conditions, it effectively reduces the risk of plastic deformation, cracking, or rebound failure of the sealing gasket 200 due to excessive compression or stress concentration, significantly improving sealing reliability and service life.

[0082] The concave structure of the dense water line 122 allows the sealing pressure to transition smoothly from the edge to the center, avoiding the common problem of "edge crushing and center misfitting" in traditional planar seals. This significantly improves the pressure uniformity of the sealing interface. At the same time, the concave structure of the dense water line 122 provides the sealing gasket 200 with greater compression freedom. Even if the sealing gasket 200 undergoes slight creep during long-term operation, it still retains a rebound margin. When the system pressure changes periodically or undergoes thermal cycling, the sealing gasket 200 can elastically recover and re-fit the sealing surface, maintaining the integrity of the seal, reducing the accumulation of permanent deformation, and thus significantly extending its service life.

[0083] Furthermore, the highly variable textured waterline 122 forms a "flexible support platform" that can better adapt to the thickness tolerance of the sealing gasket 200, the flatness deviation of the pole frame 110, or minor misalignments during the stacking assembly process. Even if there are local unevenness or preload fluctuations, the textured waterline 122 can still gradually adjust the stress state through differential contact, preventing local overload and improving the assembly robustness of the system.

[0084] In addition, the wavy, densely textured waterline 122 itself extends the leakage path, and the concave downward structure of the densely textured waterline 122 further increases the length of the tortuous path that the fluid needs to travel along the sealing interface, thereby improving the sealing effect of the sealing gasket 200.

[0085] In one implementation, please refer to Figure 5 , Figure 8 and Figure 11 The pole frame 110 is provided with multiple second annular surfaces 124. For the second pole frame 112, in the direction from one first annular surface 123 to another, the height of each second annular surface 124 first decreases and then increases. As a result, the outline of the grooved water line 122 on the second pole frame 112 will be roughly a U-shaped structure with high ends and low middle. Thus, in the grooved water line 122 of the second pole frame 112, the second annular surfaces 124 on both sides are higher, which can assist the first annular surfaces 123 in providing initial support for the sealing gasket 200; in the direction near the central region, the second annular surfaces 124 gradually decrease, forming a larger compression space. This makes the second pole frame 112 form a multi-level stepped concave structure of grooved water line 122, which is more conducive to its cooperation with the sealing gasket 200, thereby ensuring the sealing reliability of the sealing gasket 200.

[0086] Specifically, for each individual second toroidal surface 124, the height can be uniform or exhibit the same gradual change as the dense waterline 122. When the number of second toroidal surfaces 124 is odd, there will be a central second toroidal surface 124 with the lowest height, and the height of the second toroidal surfaces 124 gradually increases in the direction away from this second toroidal surface 124. When the number of second toroidal surfaces 124 is even, there will be two central second toroidal surfaces 124, and the heights of these two second toroidal surfaces 124 can be the same or different.

[0087] The above description is merely an exemplary embodiment of this application and does not limit the scope of protection of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. An electrolytic cell, characterized in that, include: Multiple electrode plates (100) are stacked along a first direction and extend along a second direction, the first direction and the second direction being perpendicular. Each electrode plate (100) includes an electrode frame (110), the central axis of which extends along the first direction. The electrode frame (110) has a first annular region (120), the first annular region (120) being provided with multiple spaced sealing annular grooves (121), the sealing annular grooves (121) being arranged around the central axis of the electrode frame (110). A sealing gasket (200) is sandwiched between two adjacent pole frames (110); and A limiting ring (300) is provided, which protrudes along the first direction from at least one of the sealing gasket (200) and the pole frame (110), and the other of the sealing gasket (200) and the pole frame (110) is provided with a limiting ring groove (400), and the limiting ring (300) is inserted into the limiting ring groove (400); In the first annular region (120), the pole frame (110) is engaged in the second direction by the limiting ring (300) and the sealing gasket (200) on both the inner and outer peripheral sides.

2. The electrolytic cell as described in claim 1, characterized in that, The limiting ring (300) is fixed to the sealing gasket (200), and the limiting ring groove (400) is provided on the pole frame (110).

3. The electrolytic cell as described in claim 2, characterized in that, The sealing gasket (200) has the limiting rings (300) distributed on both opposite sides, and the two adjacent pole frames (110) are provided with the limiting ring grooves (400). The limiting rings (300) and the limiting ring grooves (400) into which they are inserted are engaged in a limiting fit in the second direction.

4. The electrolytic cell as described in claim 3, characterized in that, The limiting ring (300) includes a first limiting ring (310) located on the inner circumferential side of the first annular region (120) and a second limiting ring (320) located on the outer circumferential side of the first annular region (120). A first limiting ring (310) is fixedly provided on both opposite sides of the sealing gasket (200). The inner circumferential side of the second limiting ring (320) is connected to the outer circumferential side of the sealing gasket (200), and both opposite sides of the second limiting ring (320) protrude relative to the sealing gasket (200). And / or, on one side of the sealing gasket (200), the protrusion height of the retaining ring (300) is less than the depth of the corresponding retaining ring groove (400); And / or, the protrusion height of the limiting ring (300) relative to the sealing gasket (200) is 1 mm to 3 mm.

5. The electrolytic cell as described in claim 2, characterized in that, The limiting ring (300) is fixed on one side of the sealing gasket (200). In the two adjacent pole frames (110), one is provided with the limiting ring groove (400), and the other is provided with the clearance ring groove (130) opposite to the limiting ring groove (400). The height of the limiting ring (300) protruding from the sealing gasket (200) is greater than the depth of the corresponding limiting ring groove (400). The limiting ring (300) abuts against the sealing gasket (200), and the sealing gasket (200) abuts against the groove wall of the clearance ring groove (130).

6. The electrolytic cell as described in claim 2, characterized in that, The sealing gasket (200) is provided with a connecting ring groove (210), at least a portion of the limiting ring (300) is inserted into the connecting ring groove (210), and is upper limit fitted to the connecting ring groove (210) in the second direction.

7. The electrolytic cell as described in claim 2, characterized in that, The limiting ring (300) and the sealing gasket (200) are integrally formed; or, the limiting ring (300) is connected to the sealing gasket (200) by bonding or welding.

8. The electrolytic cell as described in claim 1, characterized in that, The limiting ring (300) is fixed to the pole frame (110), and the limiting ring groove (400) is provided on the sealing gasket (200).

9. The electrolytic cell as described in claim 8, characterized in that, In two adjacent pole frames (110), one is provided with the limiting ring (300), and the other is provided with a clearance ring groove (130) opposite to the limiting ring groove (400). The height of the limiting ring (300) protruding relative to the pole frame (110) is greater than the depth of the corresponding limiting ring groove (400). The limiting ring (300) abuts against the bottom wall of the limiting ring groove (400), and the sealing gasket (200) abuts against the wall of the clearance ring groove (130). And / or, the limiting ring (300) is integrally formed with the pole frame (110); And / or, the height of the limiting ring (300) protruding relative to the pole frame (110) is 3mm to 6mm.

10. The electrolytic cell as described in claim 1, characterized in that, The circumference of the limiting ring (300) is 3mm to 8mm. And / or, the limiting ring (300) is configured to be made of a rigid material.

11. The electrolytic cell according to any one of claims 1 to 10, characterized in that, The inner and outer peripheral edges of the first annular region (120) are provided with a first annular surface (123), the two limiting rings (300) are respectively located on opposite sides of the two first annular surfaces (123), the sealing ring groove (121) is located between the two first annular surfaces (123), and a second annular surface (124) is also provided between each pair of sealing ring grooves (121); The two adjacent pole frames (110) are respectively the first pole frame (111) and the second pole frame (112). On the adjacent sides of the first pole frame (111) and the second pole frame (112), the second toroidal surface (124) of the first pole frame (111) is flush with the first toroidal surface (123), and the second toroidal surface (124) of the second pole frame (112) is lower than the first toroidal surface (123).

12. The electrolytic cell as described in claim 11, characterized in that, The pole frame (110) is provided with a plurality of second annular surfaces (124). For the second pole frame (112), in the direction from one of the first annular surfaces (123) to the other first annular surface (123), the height of each second annular surface (124) decreases first and then increases.

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