A sealing gasket correcting device and correcting method for a hydrogen production electrolyzer

Abstract

The application discloses a sealing gasket correcting device and method for a hydrogen production electrolytic cell. The sealing gasket correcting device is used for correcting a sealing gasket in a deformed state to a standard state. The sealing gasket has a plurality of through holes. The correcting device comprises a ring seat, a cylinder, a plurality of positioning columns and a pressing ring. The ring seat has a first side surface and a second side surface arranged oppositely. The cylinder is fixed to one side of the first side surface away from the second side surface. The axial direction of the cylinder coincides with the axial direction of the ring seat. The plurality of positioning columns are arranged on the one side of the first side surface away from the second side surface and are distributed around the axial direction of the ring seat and the outer periphery of the cylinder. The positioning columns extend along the axial direction of the ring seat. The pressing ring is sleeved on the outer periphery of the cylinder and has a freedom degree of sliding along the axial direction of the ring seat. The pressing ring is provided with a plurality of positioning holes. The plurality of positioning columns pass through the plurality of positioning holes one by one in a one-to-one correspondence. The application can correct the sealing gasket in the deformed state to the standard state, so that the sealing gasket can be reused.

Description

Technical Field

[0001] This application relates to the field of gasket correction technology, and in particular to a gasket correction device and correction method for hydrogen electrolyzers. Background Technology

[0002] Alkaline water electrolysis for hydrogen production is a widely used technology. The alkaline water electrolysis hydrogen production electrolyzer is a pressure filter structure, which is composed of dozens to hundreds of electrolysis chambers connected in series or parallel and stacked tightly. Each electrolysis chamber is equipped with a sealing gasket material to seal the electrolyzer inside and out. Therefore, an electrolyzer often has dozens to hundreds of sealing gaskets.

[0003] Traditional alkaline electrolytic cell sealing gaskets are generally circular flat gaskets. Their inner and outer diameters are designed to correspond to the corresponding electrode frame during installation. The electrode frame is a main component of the electrolytic cell, and it has channels for the flow of the electrolytic reaction medium. The sealing gasket also has corresponding channels to match and align with the electrode frame during assembly.

[0004] The sealing gasket is generally made of modified fluoroplastic filled with hot-pressed material to achieve the sealing purpose for operation of the electrolytic cell. Due to the special nature of the sealing material, the inner diameter of the sealing gasket is generally smaller than the outer diameter during manufacturing to compensate for dimensional deformation after manufacturing. In addition, sealing gaskets manufactured in summer are generally not used in winter, and sealing gaskets manufactured in winter are not used in summer. The seasonal changes in temperature and the temperature difference between north and south inevitably cause the sealing gasket to undergo significant thermal expansion and contraction deformation. This deformation is irregular. After deformation, the sealing gasket is generally elliptical in shape and has misaligned holes, making it impossible to install and use. The larger the electrolytic cell product, the more severe the thermal expansion and contraction deformation of the sealing gasket, and it is also unusable and is often scrapped. Summary of the Invention

[0005] The main purpose of this application is to provide a gasket correction device and correction method for hydrogen production electrolyzers, which aims to solve the problem that the gasket cannot be used after it is deformed.

[0006] To achieve the above objectives, this application provides a gasket straightening device for a hydrogen electrolyzer, used to straighten a deformed gasket to a standard state. The gasket has multiple through holes. The straightening device includes a ring seat, a cylinder, multiple positioning pins, and a pressure ring. The ring seat has a first side and a second side opposite to each other. The cylinder is fixed to the side of the first side away from the second side, and the axial direction of the cylinder coincides with the axial direction of the ring seat. The outer diameter of the cylinder is the same as the inner diameter of the gasket in the standard state. Multiple positioning pins are all disposed on the side of the first side away from the second side and are distributed around the outer periphery of the cylinder around the axial direction of the ring seat. The positioning pins extend along the axial direction of the ring seat, wherein each positioning pin corresponds to one of the multiple through holes on the gasket in the standard state. The pressure ring is sleeved on the outer periphery of the cylinder and has the freedom to slide along the axial direction of the ring seat. The pressure ring has multiple positioning holes, wherein each positioning pin passes through one of the multiple positioning holes.

[0007] Optionally, the outer diameter of the ring seat and the outer diameter of the pressure ring are both greater than or equal to the outer diameter of the sealing gasket in the standard state.

[0008] Optionally, the outer diameter of the pressure ring is the same as the outer diameter of the ring seat.

[0009] Optionally, the correction device may further include a plurality of hooks, which are arranged around the inner circumference of the cylinder.

[0010] Optionally, the correction device further includes a plurality of handles, which are arranged around the pressure ring on the side opposite to the ring seat.

[0011] Optionally, the positioning post is divided into a first positioning post and a second positioning post. The first positioning post is flat and the second positioning post is cylindrical. The shape of the positioning post corresponds to and matches the shape of the positioning hole and the shape of the through hole on the sealing gasket in the standard state.

[0012] Optionally, the correction device further includes a plurality of threaded rods, each of which is fixed to one end of the positioning post away from the ring seat and extends axially along the ring seat; wherein each of the threaded rods is threaded with a nut.

[0013] Optionally, the cylinder is divided into a first section and a second section in its axial direction. The first section is connected to the ring seat, and the second section is connected to the first section. The end of the second section connected to the first section is the first end, and the end of the second section away from the first section is the second end. In the axial direction of the cylinder, the outer diameter of the second section gradually narrows from the first end to the second end.

[0014] Furthermore, to achieve the above objectives, this application also provides a method for correcting the sealing gasket of a hydrogen electrolyzer, applied to the aforementioned sealing gasket correction device. The method includes separating the pressure ring from the cylinder; placing the deformed sealing gasket on the outer periphery of the cylinder and passing each positioning post through the corresponding through hole; fitting the pressure ring onto the outer periphery of the cylinder and passing each positioning post through the corresponding positioning hole; heating the sealing gasket correction device for a hydrogen electrolyzer with the sealing gasket fitted; cooling the heating process of the sealing gasket correction device for a hydrogen electrolyzer; and sequentially separating the pressure ring, the sealing gasket, and the cylinder from the cooled sealing gasket correction device for a hydrogen electrolyzer.

[0015] Optionally, heating the gasket straightening device fitted with the gasket includes heating the gasket straightening device for the hydrogen electrolyzer fitted with the gasket in a constant temperature furnace for a preset time.

[0016] This application discloses a gasket straightening device for a hydrogen electrolyzer. In use, the ring seat can be laid flat so that its axis is close to the direction of gravity, with the cylinder above it. First, the pressure ring is removed from the ring seat. Then, at least one deformed gasket is placed over the cylinder, with the positioning pin passing through the corresponding through-hole on the gasket. Next, the pressure ring is fitted around the outer circumference of the cylinder, with the positioning pin passing through the corresponding positioning hole on the pressure ring. Under its own weight, the pressure ring approaches the ring seat, thus initially flattening the gasket. The straightening device is then placed in a constant-temperature furnace for heat treatment. After the constant-temperature heating is complete, the gasket and straightening device are cooled to room temperature with the furnace. The straightening device is then removed, and the pressure ring is taken off, allowing the gasket to be removed. At this point, the gasket has been straightened to a standard state, enabling reuse of the gasket and effectively reducing economic losses. Attached Figure Description

[0017] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed herein.

[0019] Figure 1This is a schematic diagram of the overall structure of a sealing gasket correction device for a hydrogen electrolyzer provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 A structural schematic diagram from another perspective of the embodiment;

[0021] Figure 3 This is a schematic diagram of the ring seat structure in an embodiment of this application;

[0022] Figure 4 for Figure 3 A structural schematic diagram from another perspective of the embodiment;

[0023] Figure 5 This is a schematic diagram of the pressure ring structure in an embodiment of this application;

[0024] Figure 6 This is a schematic diagram of the structure of a sealing gasket correction device for a hydrogen electrolyzer provided in this application embodiment during use;

[0025] Figure 7 for Figure 6 A structural schematic diagram from another perspective of the embodiment;

[0026] Figure 8 This is a flowchart illustrating a method for correcting a sealing gasket in a hydrogen electrolyzer, as provided in an embodiment of this application.

[0027] In the diagram: 1. Sealing gasket; 2. Ring seat; 3. Cylinder body; 4. Positioning pin; 5. Pressure ring; 51. Positioning hole; 6. Hook; 7. Handle; 8. Threaded rod.

[0028] 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

[0029] The technical solutions of the embodiments of the present invention 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 the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] Furthermore, if the embodiments of this invention 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 meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A or 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 by this invention.

[0033] The sealing gaskets used in alkaline water electrolysis hydrogen production electrolyzers are circular ring-shaped sheets, made of fluoroplastic material filled and modified by hot pressing, and then machined with multiple holes of varying sizes. Due to the characteristics of their material, structural dimensions, and manufacturing process, the sealing gaskets are prone to natural thermal deformation after production, resulting in problems such as overall ellipticity, increased inner diameter, decreased outer diameter, and misaligned holes. This makes them unsuitable for normal installation and use. The larger the electrolyzer product, the larger the sealing gasket size, and the more prone and greater the deformation. Typically, the dimensional deformation or hole misalignment can reach 10mm. The degree of deformation varies from batch to batch and is irregular. After deformation, the sealing gasket has high stress. Even if it is forcibly tensioned within the material's elastic range for installation and use, it will rebound. During installation, it is impossible to ensure that the inner and outer diameters, hole positions, and other characteristics are aligned with the characteristics of the matching electrode frame parts, which seriously affects the installation, use, and manufacturing quality of the electrolyzer. Generally, sealing gaskets with small deformation are used as qualified products, while sealing gaskets with large deformation are scrapped.

[0034] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] Figure 1 This is a schematic diagram of the overall structure of a sealing gasket correction device for a hydrogen electrolyzer provided in an embodiment of this application; Figure 2 for Figure 1 A structural schematic diagram from another perspective of the embodiment; Figure 3This is a schematic diagram of the ring seat structure in an embodiment of this application; Figure 4 for Figure 3 A structural schematic diagram from another perspective of the embodiment;

[0036] Figure 5 This is a schematic diagram of the pressure ring structure in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of a sealing gasket correction device for a hydrogen electrolyzer provided in this application embodiment during use; Figure 7 for Figure 6 A structural schematic diagram from another perspective of the embodiment; Figure 8 This is a flowchart illustrating a method for correcting a sealing gasket in a hydrogen electrolyzer, as provided in an embodiment of this application.

[0037] refer to Figures 1 to 7 This application provides a gasket straightening device for a hydrogen electrolyzer, used to straighten a deformed gasket 1 to a standard state. The gasket 1 has multiple through holes. The straightening device may include a ring seat 2, a cylinder 3, multiple positioning pins 4, and a pressure ring 5. The ring seat 2 has a first side and a second side arranged opposite to each other. The cylinder 3 is fixed to the side of the first side away from the second side, and the axial direction of the cylinder 3 coincides with the axial direction of the ring seat 2. The outer diameter of the cylinder 3 is the same as the inner diameter of the gasket 1 in the standard state. Multiple positioning pins 4 are all arranged on the side of the first side away from the second side and are distributed around the outer periphery of the cylinder 3 around the axial direction of the ring seat 2. The positioning pins 4 extend along the axial direction of the ring seat 2, and each of the multiple positioning pins 4 corresponds to a multiple through hole on the gasket 1 in the standard state. The pressure ring 5 is sleeved on the outer periphery of the cylinder 3 and has the freedom to slide along the axial direction of the ring seat 2. The pressure ring 5 is provided with multiple positioning holes 51, and each of the multiple positioning pins 4 passes through a multiple positioning hole 51.

[0038] This application provides a gasket straightening device for a hydrogen electrolyzer. In use, the ring seat 2 can be laid flat so that its axis is close to the direction of gravity. The cylinder 3 is positioned above the ring seat 2. First, the pressure ring 5 is removed from the ring seat 2. Then, at least one deformed gasket 1 is placed over the cylinder 3, with the positioning pin 4 passing through the corresponding through hole on the gasket 1. Next, the pressure ring 5 is fitted onto the outer circumference of the cylinder 3, with the positioning pin 4 passing through the corresponding positioning hole 51 on the pressure ring 5. Under its own weight, the pressure ring 5 approaches the ring seat 2, thus initially flattening the gasket 1. The straightening device is then placed in a constant-temperature furnace for heat treatment. After the constant-temperature heating is complete, the gasket 1 and the straightening device are cooled to room temperature with the furnace. The straightening device is then removed, and the pressure ring 5 is removed, allowing the gasket 1 to be removed. At this point, the gasket 1 has been straightened to a standard state, enabling the gasket 1 to be reused, effectively reducing economic losses.

[0039] In this process, heating the gasket 1 to a certain temperature in a constant temperature furnace eliminates the stress in the deformed gasket 1 and allows the gasket 1 to freely extend to its pre-deformation state on the straightening device. As the constant temperature furnace cools down, it ensures that the gasket 1 can be restored to its original shape after heating and extension, thereby ensuring that the processed gasket 1 can be restored to its standard state and achieving the purpose of straightening the gasket 1 for reuse.

[0040] It should be noted that a standard gasket 1 refers to a gasket 1 that can meet normal installation and use; a deformed gasket 1 refers to a gasket 1 whose size and hole position are inconsistent due to natural deformation caused by thermal expansion and contraction, making it impossible or difficult to install; a corrected gasket 1 refers to restoring the inner diameter, outer diameter, and position and size of the through hole of the gasket 1 to the standard state, so that the inner and outer diameters, hole positions, and other characteristics of the gasket 1 are aligned with the characteristics of the electrode frame parts in the matching hydrogen electrolyzer, so as to complete the installation and use of the gasket in the electrolyzer.

[0041] The positioning post 4 corresponds one-to-one with the through hole on the sealing gasket 1 in the standard state. This means that when the sealing gasket 1 is in the standard state, the size of the positioning post 4 is consistent with the size of the corresponding through hole. That is, when the positioning post 4 passes through the corresponding through hole, the positioning post 4 fits against the side wall of the corresponding through hole. The through hole on the sealing gasket 1 in the deformed state should also have a corresponding positioning post 4. When the sealing gasket 1 in the deformed state is installed on the straightening device, the positioning post 4 is simply passed through the corresponding through hole. At this time, because the through hole is deformed, the positioning post 4 may not necessarily fit against the side wall of the through hole. After the straightening is completed, the sealing gasket 1 is in the standard state, and the side wall of the through hole fits against the positioning post 4.

[0042] In this process, the outer diameter of the cylinder 3 is the same as the inner diameter of the sealing gasket 1 in its standard state, and the positioning post 4 corresponds one-to-one with the through hole on the sealing gasket 1 in its standard state. In the sealing gasket 1 used in the hydrogen electrolysis cell, the outer diameter of the deformed sealing gasket 1 is smaller and the inner diameter is larger than that of the sealing gasket 1 in its standard state. Thus, after the heat treatment of the deformed sealing gasket 1 is completed, the stress in the sealing gasket 1 is eliminated, and the sealing gasket 1 is allowed to freely extend to its pre-deformation state on the straightening device. The inner circumference of the sealing gasket 1 adheres to the cylinder 3 and returns to its standard state, and the through hole of the sealing gasket 1 adheres to the positioning post 4 and returns to its standard state. In this way, the outer circumference of the sealing gasket 1 naturally extends outward and returns to its standard state, thus completing the straightening of the sealing gasket 1.

[0043] In addition, such as Figure 6 and Figure 7 As shown, when multiple sealing gaskets 1 are being corrected simultaneously, they can be stacked between the ring seat 2 and the pressure ring 5 in the axial direction of the ring seat 2.

[0044] like Figure 3 As shown, the ring seat 2 can be a flat ring, with the two opposite sides on its own axis being the first side and the second side.

[0045] It should be noted that due to the material characteristics of the sealing gasket 1, the sealing gasket 1 is generally relatively soft when the temperature is high in summer and relatively hard when the temperature is low in winter. Appropriate placement measures should be determined according to the actual environmental conditions and the degree of deformation of the sealing gasket 1 to ensure that the sealing gasket 1 will not be damaged when it is placed on the correction device in a deformed state.

[0046] For example, in winter, the sealing gasket 1 is relatively hard, and the deformation of the sealing gasket 1 is large, making it difficult for the positioning post 4 to pass through the corresponding through hole. In this case, it is not advisable to use force to deform the sealing gasket 1 and force the positioning post 4 through the corresponding through hole, as this may easily damage the sealing gasket 1. Instead, the deformed sealing gasket 1 can be softened appropriately by taking a hot water bath or other methods, and then the positioning post 4 can be passed through the corresponding through hole to fix the deformed sealing gasket 1.

[0047] Furthermore, if the sealing gasket 1 is relatively hard and the deformation of the sealing gasket 1 in a deformed state is small, the positioning post 4 can pass through the corresponding through hole, but the pressure ring 5 cannot flatten the sealing gasket 1. The above solution can be used to soften the sealing gasket 1 appropriately before proceeding with the operation.

[0048] refer to Figure 7 In an exemplary embodiment, the outer diameter of the ring seat 2 and the outer diameter of the pressure ring 5 are both greater than or equal to the outer diameter of the sealing gasket 1 in the standard state.

[0049] Specifically, if the outer diameter of the ring seat 2 and the outer diameter of the pressure ring 5 are both greater than or equal to the outer diameter of the sealing gasket 1 in the standard state, then when the sealing gasket 1 in the deformed state is installed on the straightening device, the orthographic projection of the sealing gasket 1 on the first side is located within the edge of the first side. Thus, when the pressure ring 5 approaches the ring seat 2 along the axial direction of the ring seat 2, the pressure ring 5 and the ring seat 2 can completely cover and squeeze the sealing gasket 1 in the deformed state, thereby facilitating the initial flattening of the sealing gasket 1, preventing other unrestrained changes in the sealing gasket 1 during the heat treatment process, and ensuring that the sealing gasket 1 is always flat.

[0050] refer to Figure 7 In an exemplary embodiment, the outer diameter of the pressure ring 5 is the same as the outer diameter of the ring seat 2.

[0051] Specifically, when the pressure ring 5 is fitted onto the cylinder 3, the overall structure of the pressure ring 5 and the ring seat 2 is more aesthetically pleasing and neat. Furthermore, the outer diameters of the pressure ring 5 and the ring seat 2 are the same as the outer diameter of the sealing gasket 1 in the standard state. Thus, the ring seat 2 and the pressure ring 5 not only facilitate the initial flattening of the sealing gasket 1 in the deformed state, but also effectively reduce the volume of the ring seat 2 and the pressure ring 5, thereby reducing the space occupied by the correction device.

[0052] refer to Figure 3 , Figure 4 and Figure 7 In an exemplary embodiment, the correction device may further include a plurality of hooks 6, which are arranged around the inner circumference of the cylinder 3.

[0053] Thus, the orthodontic device can be lifted using hook 6, facilitating its transport; among other things, such as Figure 7 As shown, the hook 6 can be a strip of steel bar with one end bent back. The strip of steel bar extends along the axial direction of the ring seat 2, and the end of the strip of steel bar away from the ring seat 2 bends back towards the ring seat 2 to form the hook 6 described above. Of course, this is only a preferred shape of the hook 6, which is simple to install and use, and is not a limitation on the specific shape of the hook 6.

[0054] Specifically, multiple hooks 6 are arranged around the inner circumference of the cylinder 3 along the axis of the ring seat 2, and the multiple hooks 6 are evenly spaced. In this way, when the straightening device is lifted and transported by multiple hooks 6, the straightening device can be kept stable and shaking can be reduced. Moreover, the end of the strip steel bar away from the ring seat 2 is bent back towards the side of the ring seat 2 to form a hook 6. In this way, when the straightening device is lifted, the pressure ring 5 is located above the ring seat 2 and is supported by the ring seat 2, so it will not separate from the cylinder 3 and fall off.

[0055] Furthermore, the number of hooks 6 should be at least three. When the number of hooks 6 is less than three, the straightening device is prone to swaying when lifted by hooks 6, and during the swaying process, the pressure ring 5 and the ring seat 2 may separate, leading to a dangerous situation. Of course, the more hooks 6 there are, the more stable the lifting and straightening device will be, but this will increase the cost and complicate the lifting operation. Figure 4 As shown in the embodiment of this application, there are four hooks 6. Lifting the correction device with four hooks 6 is more stable, and the cost of hooks 6 is low, and the lifting operation is also relatively simple.

[0056] refer to Figure 1 and Figure 5 In an exemplary embodiment, the correction device may further include a plurality of handles 7, which are arranged around the pressure ring 5 on the side opposite to the ring seat 2.

[0057] Specifically, in this embodiment, there are two handles 7, and the two handles 7 are arranged opposite each other in a first direction, which is perpendicular to the axial direction of the ring seat 2. This makes it easy for the operator to grasp one handle 7 with each hand and pull the pressure ring 5, so that the pressure ring 5 moves away from the ring seat 2 along the axial direction of the ring seat 2 and is finally removed from the outer periphery of the cylinder 3. Similarly, the operator can grasp both handles 7 to drive the pressure ring 5, so that the pressure ring 5 is fitted onto the cylinder 3 along the axial direction of the ring seat 2, thus completing the installation of the pressure ring 5.

[0058] In addition, there is no limit to the number of handles 7, so that the pressure ring 5 can be pulled by the handles 7.

[0059] refer to Figure 1 and Figure 5 In an exemplary embodiment, the orthographic projection of the handle 7 on the side of the pressure ring 5 away from the ring seat 2 is the first projection, and the area where the positioning hole 51 is located is the first area. The first projection is separate from the first area.

[0060] like Figure 5 As shown, the first projection does not intersect with the first area, so when the positioning post 4 passes through the corresponding positioning hole 51 on the pressure ring 5, it will not collide with the handle 7, ensuring that the correction device can be used normally.

[0061] refer to Figure 3 , Figure 5 as well as Figure 6 The positioning post 4 is divided into a first positioning post and a second positioning post. The first positioning post is flat and the second positioning post is cylindrical. The shape of the positioning post 4 corresponds to and matches the shape of the positioning hole 51 and the shape of the through hole on the sealing gasket 1 in the standard state.

[0062] It should be understood that, such as Figure 3 As shown, the positioning post 4 has various shapes, such as Figure 3 The flat or cylindrical shape of the positioning post 4 is not a limitation on its shape, but merely an embodiment. The shape of the positioning post 4 corresponds to the shape of the through hole on the sealing gasket 1 in its standard state. This means that when the positioning post 4 passes through the corresponding through hole on the sealing gasket 1 in its standard state, the positioning post 4 fits against the sidewall of the through hole, and the positioning post 4 does not affect the axial movement of the sealing gasket 1 on the ring seat 2. The shape of the positioning post 4 can be determined based on the shape of the through hole on the sealing gasket 1 in its standard state, which is used in an actual hydrogen electrolyzer.

[0063] In addition, the shape of the positioning post 4 corresponds to the shape of the positioning hole 51. This means that when the positioning post 4 passes through the corresponding positioning hole 51 on the pressure ring 5, the positioning post 4 fits against the side wall of the positioning hole 51, and the positioning post 4 does not affect the axial movement of the pressure ring 5 on the ring seat 2.

[0064] refer to Figure 1 and Figure 3 In an exemplary embodiment, the correction device may further include a plurality of threaded rods 8, which are respectively fixed to one end of a positioning post 4 away from the ring seat 2 and extend along the axial direction of the ring seat 2; wherein each threaded rod 8 is threaded with a nut.

[0065] Specifically, such as Figure 3As shown, a threaded rod 8 is fixed to one end of the positioning post 4 away from the ring seat 2; when too many sealing gaskets 1 are processed at once or the deformation of the sealing gaskets 1 is large, after the pressure ring 5 presses the sealing gaskets 1 with its own weight, a nut can be screwed on the threaded rod 8 and the nut can be slightly tightened so that the pressure ring 5 can flatten multiple sealing gaskets 1, and the multiple sealing gaskets 1 are stacked more compactly.

[0066] In addition, as mentioned above, the positioning post 4 can be flat or cylindrical, etc. Therefore, in this embodiment, the threaded rod 8 is set on the cylindrical positioning post 4, which is more aesthetically pleasing and neat. Of course, the threaded rod 8 can also be set on the flat positioning post 4, as long as the nut can limit the pressure ring 5.

[0067] refer to Figure 3 In an exemplary embodiment, the cylinder 3 is divided into a first section and a second section in its own axial direction. The first section is connected to the ring seat 2, and the second section is connected to the first section. The end of the second section connected to the first section is the first end, and the end of the second section away from the first section is the second end. In the axial direction of the cylinder 3, the outer diameter of the second section gradually shrinks from the first end to the second end.

[0068] Specifically, such as Figure 3 As shown, when the outer diameter of the second section gradually shrinks from the first end to the second end along the axial direction of the cylinder 3, the sealing gasket 1, which is in a deformed state, is fitted onto the outer circumference of the cylinder 3, making the operation easier to complete. That is, the end of the cylinder 3 away from the ring seat 2 can more easily pass through the inner circumference of the sealing gasket 1, effectively improving work efficiency.

[0069] Furthermore, the end of each positioning post 4 away from the ring seat 2 can also be set in the same way as the cylinder 3, so that the outer diameter of each positioning post 4 gradually shrinks in the direction away from the ring seat 2 in the axial direction of the cylinder 3. In this way, each positioning post 4 can more easily pass through the corresponding through hole on the sealing gasket 1, and the operation of installing the deformed sealing gasket 1 on the correction device is faster.

[0070] refer to Figure 8 Based on the above embodiments, this application also provides a method for correcting the sealing gasket of a hydrogen production electrolyzer, applied to the above-mentioned device for correcting the sealing gasket of a hydrogen production electrolyzer. The method for correcting the sealing gasket of a hydrogen production electrolyzer may include the following steps:

[0071] S100, Separate the pressure ring 5 from the cylinder 3;

[0072] S200. The sealing gasket 1 in the deformed state is fitted onto the outer periphery of the cylinder 3, and each positioning post 4 is passed through the corresponding through hole;

[0073] S300. Fit the pressure ring 5 onto the outer periphery of the cylinder 3, and pass each positioning pin 4 through the corresponding positioning hole 51.

[0074] S400. The hydrogen electrolyzer with the sealing gasket 1 is heated by the sealing gasket correction device.

[0075] S500: Cool the hydrogen electrolyzer after heating using a sealing gasket correction device;

[0076] S600, sequentially separate the pressure ring 5 and sealing gasket 1 from the cylinder 3 in the sealing gasket correction device of the cooled hydrogen electrolyzer.

[0077] In steps S100 and S600, if the above-mentioned scheme of adding threaded rod 8 and nut is adopted, the nut should be unscrewed before separating the pressure ring 5, and then the pressure ring 5 should be moved along the axial direction of the ring seat 2 to move the pressure ring 5 away from the ring seat 2, so that the pressure ring 5 can be removed.

[0078] In step S200, if there are multiple sealing gaskets 1, they can be stacked and sleeved on the outer periphery of the cylinder 3 in the axial direction of the ring seat 2.

[0079] In step S300, if the above-mentioned scheme of adding threaded rod 8 and nut is adopted, after the pressure ring 5 is sleeved on the outside of the cylinder 3 and the pressure ring 5 presses the sealing gasket 1 with its own weight, the nut should be screwed on and slightly tightened so that the pressure ring 5 can flatten the sealing gasket 1 and the sealing gasket 1 is stacked more compactly.

[0080] In an exemplary embodiment, step S400 specifically includes the following steps:

[0081] The hydrogen electrolyzer with sealing gasket 1 is heated for a preset time using a constant temperature furnace.

[0082] Specifically, the constant temperature furnace can be a hot blast furnace or other types of heating furnace. The size of the furnace cavity needs to allow the straightening device to be placed horizontally, that is, the axis of the ring seat 2 is close to the direction of gravity. The temperature of the constant temperature furnace can be set and operates stably at a certain temperature. In this way, heating the constant temperature furnace to a certain temperature will eliminate the stress in the deformed sealing gasket 1 and allow the material of the sealing gasket 1 to freely extend to the pre-deformation state on the sealing gasket straightening device for the hydrogen electrolysis cell.

[0083] The heating temperature of the constant temperature furnace is 50℃~150℃, specifically 50℃, 70℃, 90℃, 110℃, 130℃ and 150℃, etc.; the preset duration is 10h~24h, specifically 13h, 16h, 19h, 21h and 24h, etc.

[0084] Based on the material characteristics of the sealing gasket 1 used in the hydrogen electrolyzer, after setting the heating temperature parameters, start the constant temperature furnace and continue heating for the preset time after the constant temperature furnace reaches the set parameters.

[0085] In step S500, after the constant temperature heating is completed, the sealing gasket 1 and the sealing gasket straightening device for the hydrogen electrolysis cell are cooled to room temperature along with the constant temperature furnace. As the constant temperature furnace cools down, it can ensure that the sealing gasket 1 is shaped after heating and stretching, thereby ensuring that the processed sealing gasket 1 can be restored to the standard state, achieving the purpose of straightening the sealing gasket 1 for reuse.

[0086] It should be understood that before setting the heating temperature and preset time, the gaskets 1 in the deformed state should be inspected, classified and assessed. The deformation state and deformation parameters of each gasket 1 should be accurately recorded through inspection and measurement. Those with small deformation and those with large deformation should be distinguished so that the heat treatment parameters can be determined according to the actual deformation state of the product during subsequent heat treatment.

[0087] Specifically, in one embodiment, the hole deformation of the sealing gasket 1 in the deformed state is about 6.8 mm, the initial ambient temperature is 13°C, the heating temperature of the constant temperature furnace can be set to 70°C, the heating time can be set to 20 h, the cooling method is furnace cooling, the furnace opening ambient temperature is 15°C, and the hole deformation of the sealing gasket 1 after correction is 0 mm, which meets the usage standard and realizes the reuse of the sealing gasket 1.

[0088] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A sealing gasket correction device for a hydrogen electrolyzer, characterized in that, For correcting a deformed gasket (1) to a standard state, the gasket (1) having multiple through holes, the correction device includes: The ring seat (2) has a first side and a second side that are arranged opposite to each other; The cylinder (3) is fixed to the side of the first side away from the second side. The axial direction of the cylinder (3) coincides with the axial direction of the ring seat (2). The outer diameter of the cylinder (3) is the same as the inner diameter of the sealing gasket (1) in the standard state. Multiple positioning posts (4) are all disposed on the side of the first side away from the second side and are distributed around the outer periphery of the cylinder (3) around the axial direction of the ring seat (2). The positioning posts (4) extend along the axial direction of the ring seat (2). The multiple positioning posts (4) correspond one-to-one with the multiple through holes on the sealing gasket (1) in the standard state. The pressure ring (5) is sleeved on the outer periphery of the cylinder (3) and has the freedom to slide along the axial direction of the ring seat (2). The pressure ring (5) is provided with a plurality of positioning holes (51), wherein a plurality of positioning pins (4) pass through a plurality of positioning holes (51) in a corresponding manner.

2. The sealing gasket correction device as described in claim 1, characterized in that, The outer diameter of the ring seat (2) and the outer diameter of the pressure ring (5) are both greater than or equal to the outer diameter of the sealing gasket (1) in the standard state.

3. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 2, characterized in that, The outer diameter of the pressure ring (5) is the same as the outer diameter of the ring seat (2).

4. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 1, characterized in that, The corrective device also includes: Multiple hooks (6) are arranged around the inner circumference of the cylinder (3).

5. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 1, characterized in that, The corrective device also includes: Multiple handles (7) are arranged around the pressure ring (5) on the side opposite to the ring seat (2).

6. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 5, characterized in that, The positioning post (4) is divided into a first positioning post and a second positioning post. The first positioning post is flat and the second positioning post is cylindrical. The shape of the positioning post (4) corresponds to and matches the shape of the positioning hole (51) and the shape of the through hole on the sealing gasket (1) in the standard state.

7. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 1, characterized in that, The corrective device also includes: Multiple threaded rods (8) are respectively fixed to one end of the positioning post (4) away from the ring seat (2) and extend along the axial direction of the ring seat (2); Each of the threaded rods (8) is threaded with a nut.

8. The sealing gasket correction device for a hydrogen electrolyzer as described in claim 1, characterized in that, The cylinder (3) is divided into a first section and a second section along its own axial direction. The first section is connected to the ring seat (2), and the second section is connected to the first section. Wherein, the end of the second segment that connects to the first segment is the first end, and the end of the second segment that is away from the first segment is the second end; In the axial direction of the cylinder (3), the outer diameter of the second section gradually narrows from the first end to the second end.

9. A method for correcting the sealing gasket of a hydrogen electrolyzer, characterized in that, The gasket straightening device for a hydrogen electrolyzer according to any one of claims 1 to 8, wherein the gasket straightening method for a hydrogen electrolyzer comprises: Separate the pressure ring (5) from the cylinder (3); The sealing gasket (1) in a deformed state is fitted onto the outer periphery of the cylinder (3), and each positioning post (4) is passed through the corresponding through hole; The pressure ring (5) is sleeved on the outer periphery of the cylinder (3), and each of the positioning pins (4) is passed through the corresponding positioning hole (51); The sealing gasket correction device for the hydrogen electrolyzer with the sealing gasket (1) is heated; The hydrogen electrolyzer after heating is completed is cooled using a sealing gasket correction device; Separate the pressure ring (5), the sealing gasket (1), and the cylinder (3) from the cooling hydrogen electrolyzer using the sealing gasket correction device.

10. The method for correcting the sealing gasket of a hydrogen electrolyzer as described in claim 9, characterized in that, The heating of the sealing gasket correction device on which the sealing gasket (1) is fitted includes: The hydrogen electrolyzer with the sealing gasket (1) fitted with a constant temperature furnace is heated for a preset time using the sealing gasket correction device.

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