Correction device and correction method for sealing gasket for hydrogen production electrolytic cell

Abstract

The invention discloses a sealing gasket correction device and correction method for a hydrogen production electrolytic bath, the sealing gasket correction device is used for correcting a sealing gasket in a deformed state into a standard state, the sealing gasket is provided with a plurality of through holes, the correction device comprises a ring seat, a cylinder, a plurality of positioning columns and a pressing ring, and the ring seat is provided with a first side face and a second side face which are oppositely arranged; the cylinder is fixed to the side, away from the second side face, of the first side face, and the axial direction of the cylinder coincides with the axial direction of the ring base. The multiple positioning columns are arranged on the side, away from the second side face, of the first side face and distributed on the periphery of the barrel in the axial direction of the ring base in a surrounding mode, and the positioning columns extend in the axial direction of the ring base. The pressing ring is arranged on the periphery of the cylinder in a sleeving mode and has the freedom degree of sliding in the axial direction of the ring base, a plurality of positioning holes are formed in the pressing ring, and the positioning columns penetrate through the positioning holes in a one-to-one correspondence mode. The sealing gasket in a deformed state can be corrected to be in a standard state, so that the sealing gasket can be reused.

Description

Technical Field

[0001] The present application relates to the technical field of sealing gasket correction, and in particular to a sealing gasket correction device and correction method for a hydrogen production electrolyzer. Background Art

[0002] Alkaline water electrolysis hydrogen production technology is a widely used technology. The alkaline water electrolysis hydrogen production electrolytic cell is a filter press structure, which is composed of dozens to hundreds of electrolysis chambers connected in series or in parallel and stacked and fastened. Each electrolysis chamber is provided with a sealing gasket material for sealing the electrolytic cell inside and outside, so an electrolytic cell is often provided with dozens to hundreds of sealing gaskets.

[0003] The appearance of traditional alkaline electrolytic cell sealing gaskets is generally a circular flat gasket. The inner and outer diameter dimensions are generally designed and installed to correspond to the corresponding plate frame. The plate frame is the main component of the electrolytic cell. The plate frame is provided with channels for the flow of electrolytic reaction media. The corresponding position of the sealing gasket is also provided with channels to match and align with the plate frame for assembly.

[0004] The material of the sealing gasket is generally filled with modified fluoroplastics and is hot-pressed to achieve the purpose of sealing during the working condition of the electrolytic cell. Due to the special nature of the sealing material, the inner diameter of the sealing gasket is generally smaller and the outer diameter is larger during production to compensate for the dimensional deformation of the sealing gasket after manufacturing. In general, sealing gaskets manufactured in summer should be avoided from winter, and sealing gaskets manufactured in winter should be avoided from summer. The climate changes between hot and cold seasons and the temperature difference between the north and the south inevitably cause the sealing gasket products to have large thermal expansion and contraction deformation. The deformation is irregular. After deformation, the sealing gasket is generally elliptical as a whole and the holes are misaligned, making it impossible to install and use. The larger the electrolytic cell product, the more serious the thermal expansion and contraction deformation of the sealing gasket, and it cannot be used for other purposes and is often scrapped. Summary of the invention

[0005] The main purpose of the present application is to provide a sealing gasket correction device and correction method for a hydrogen production electrolyzer, aiming to solve the problem that the sealing gasket cannot be used after being deformed.

[0006] To achieve the above-mentioned purpose, the present application provides a sealing gasket correction device for a hydrogen production electrolyzer, which is used to correct a sealing gasket in a deformed state to a standard state, wherein the sealing gasket has a plurality of through holes, and the correction device comprises a ring seat, a cylinder, a plurality of positioning posts and a pressure ring, wherein the ring seat has a first side surface and a second side surface which are arranged opposite to each other; the cylinder is fixed to a side of the first side surface which is away from the second side surface, the axial direction of the cylinder coincides with the axial direction of the ring seat, and the outer diameter of the cylinder is the same as the inner diameter of the sealing gasket in a standard state; a plurality of positioning posts are all arranged on a side of the first side surface which is away from the second side surface and are distributed around the axial direction of the ring seat on the outer periphery of the cylinder, and the positioning posts extend along the axial direction of the ring seat, wherein the plurality of positioning posts correspond one-to-one to the plurality of through holes on the sealing gasket in a 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, and the pressure ring is provided with a plurality of positioning holes, wherein the plurality of positioning posts pass through the plurality of positioning holes in a one-to-one correspondence.

[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 a 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 further comprises a plurality of hooks, which are arranged around the inner circumference of the cylinder.

[0010] Optionally, the correction device further comprises a plurality of handles, which are arranged around a side of the pressure ring facing away from the ring seat.

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

[0012] Optionally, the correction device further comprises a plurality of threaded rods, which are respectively fixed to one end of the positioning column away from the ring seat and extend axially along the ring seat; wherein each of the threaded rods is threadedly connected 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; wherein, 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 shrinks from the first end to the second end.

[0014] In addition, to achieve the above-mentioned purpose, an embodiment of the present application also provides a method for correcting a sealing gasket for a hydrogen-producing electrolyzer, which is applied to the above-mentioned sealing gasket correction device, and the method for correcting a sealing gasket for a hydrogen-producing electrolyzer includes separating a pressure ring from a cylinder; sleeveing ​​a deformed sealing gasket on the outer periphery of the cylinder, and passing each positioning column through the corresponding through hole; sleeveing ​​the pressure ring on the outer periphery of the cylinder, and passing each positioning column through the corresponding positioning hole; heating the sealing gasket correction device for a hydrogen-producing electrolyzer on which the sealing gasket is sleeved; cooling the sealing gasket correction device for a hydrogen-producing electrolyzer after heating is completed; and successively separating the pressure ring and the sealing gasket from the cylinder in the cooled sealing gasket correction device for a hydrogen-producing electrolyzer.

[0015] Optionally, the heating of the sealing gasket correction device on which the sealing gasket is mounted includes using a constant temperature furnace to heat the sealing gasket correction device for the hydrogen production electrolyzer on which the sealing gasket is mounted for a preset time period.

[0016] The present application proposes a sealing gasket correction device for a hydrogen production electrolyzer. When in use, the ring seat can be placed flat so that the axial direction of the ring seat is close to the direction of gravity. At this time, the cylinder is located above the ring seat. The pressure ring is first removed from the ring seat, and then at least one sealing gasket in a deformed state is sleeved on the outside of the cylinder so that the positioning column passes through the corresponding through hole on the sealing gasket. Then, the pressure ring is sleeved on the outer periphery of the cylinder, and the positioning column passes through the corresponding positioning hole on the pressure ring. The pressure ring approaches the ring seat under the action of its own gravity, thereby initially flattening the sealing gasket. Then, the correction device is placed in a constant temperature furnace for heat treatment. After the constant temperature heating is completed, the sealing gasket and the correction device are cooled to room temperature with the constant temperature furnace. The correction device is taken out and the pressure ring is removed, and the sealing gasket can be removed. At this time, the sealing gasket has been corrected to a standard state, so that the sealing gasket can be reused, effectively reducing economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly explain the prior art and the present invention, the drawings required for describing the prior art and the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other drawings can be derived from the provided drawings without creative work.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them. They are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportion or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

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

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

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

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

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

[0024] Figure 6 A schematic diagram of the structure of a sealing gasket correction device for a hydrogen production electrolyzer provided in an embodiment of the present application when in use;

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

[0026] Figure 8 A flow chart of a method for correcting a sealing gasket for a hydrogen production electrolyzer provided in an embodiment of the present application.

[0027] In the figure: 1, sealing gasket; 2, ring seat; 3, cylinder; 4, positioning column; 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 embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

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

[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A or scheme B or schemes that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The sealing gasket used in the electrolyzer for hydrogen production by alkaline water electrolysis is in the shape of a circular ring sheet. It is filled with fluoroplastic material, modified by hot pressing and then processed with multiple holes of different sizes. Due to its material, structural size, manufacturing process and other characteristics, there are generally problems such as overall ellipse, enlarged inner diameter, reduced outer diameter, and uneven hole positions due to natural cold and hot deformation after the sealing gasket is produced and manufactured, which makes it impossible to install and use normally. The larger the electrolyzer product, the larger the size of the sealing gasket, the easier it is to deform and the greater the degree of deformation. Usually, the dimensional deformation or hole position misalignment can reach 10mm, and the degree of deformation in batches is different and irregular. After deformation, the sealing gasket has a large stress, and the material is forced to be tensioned within the elastic range and rebounds after installation and use. During installation, it is impossible to ensure that the inner and outer diameters, hole positions and other characteristics are aligned with the matching plate frame parts. Features, seriously affecting the installation and use of the electrolyzer and the manufacturing quality; generally, sealing gaskets with smaller deformation are used as qualified products, and sealing gaskets with larger deformation are scrapped.

[0034] The present application is described in detail below with reference to the accompanying drawings and embodiments.

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

[0036] Figure 5 This is a schematic diagram of the structure of the pressure ring of an embodiment of the present application; Figure 6 A schematic diagram of the structure of a sealing gasket correction device for a hydrogen production electrolyzer provided in an embodiment of the present application when in use; Figure 7 for Figure 6 A structural schematic diagram of another perspective of the embodiment; Figure 8 A flow chart of a method for correcting a sealing gasket for a hydrogen production electrolyzer provided in an embodiment of the present application.

[0037] refer to Figure 1 to Figure 7 The embodiment of the present application provides a gasket correction device for a hydrogen production electrolyzer, which is used to correct a gasket 1 in a deformed state to a standard state. The gasket 1 has a plurality of through holes. The correction device may include a ring seat 2, a cylinder 3, a plurality of positioning posts 4 and a pressure ring 5. The ring seat 2 has a first side surface and a second side surface that are arranged opposite to each other. The cylinder 3 is fixed to a side of the first side surface that is away from the second side surface. 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 a standard state. The plurality of positioning posts 4 are all arranged on a side of the first side surface that is away from the second side surface and are distributed around the axial direction of the ring seat 2 on the outer periphery. The positioning posts 4 extend along the axial direction of the ring seat 2, wherein the plurality of positioning posts 4 correspond one-to-one to the plurality of through holes on the gasket 1 in a 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 the plurality of positioning posts 4 pass through the plurality of positioning holes 51 in a one-to-one correspondence.

[0038] The embodiment of the present application proposes a sealing gasket correction device for a hydrogen production electrolyzer. When in use, the ring seat 2 can be placed flat so that the axial direction of the ring seat 2 is close to the gravity direction. At this time, the cylinder 3 is located above the ring seat 2. The pressure ring 5 is first removed from the ring seat 2, and then at least one sealing gasket 1 in a deformed state is sleeved on the outside of the cylinder 3, so that the positioning column 4 passes through the corresponding through hole on the sealing gasket 1, and then the pressure ring 5 is sleeved on the outer periphery of the cylinder 3, and the positioning column 4 passes through the corresponding positioning hole 51 on the pressure ring 5. The pressure ring 5 approaches the ring seat 2 under the action of its own gravity, thereby preliminarily flattening the sealing gasket 1; then the correction device is placed in a constant temperature furnace for heat treatment. After the constant temperature heating is completed, the sealing gasket 1 and the correction device are cooled to room temperature with the constant temperature furnace. The correction device is taken out and the pressure ring 5 is removed, and the sealing gasket 1 can be removed. At this time, the sealing gasket 1 has been corrected to a standard state, so that the sealing gasket 1 can be reused, effectively reducing economic losses.

[0039] The constant temperature furnace is heated to a certain temperature to eliminate the stress in the deformed sealing gasket 1 and allow the sealing gasket 1 to freely extend on the correction device to the state before deformation. As the constant temperature furnace is cooled, the sealing gasket 1 can be guaranteed to be fixed after heating and extension, thereby ensuring that the treated sealing gasket 1 can be restored to a standard state, thereby achieving the purpose of correcting the sealing gasket 1 for reuse.

[0040] It should be noted that a sealing gasket 1 in a standard state refers to a sealing gasket 1 that can meet the requirements of normal installation and use; a sealing gasket 1 in a deformed state refers to a sealing gasket 1 that cannot be installed or is difficult to install due to misaligned size and hole positions caused by natural deformation due to thermal expansion and contraction; correcting a sealing gasket 1 refers to restoring the inner diameter, outer diameter, and position and size of the through hole of the sealing gasket 1 to a standard state, so that the inner and outer diameters, hole positions and other features of the sealing gasket 1 are aligned with the features of the plate frame parts in the matching hydrogen production electrolyzer, so as to complete the installation and use of the sealing gasket in the electrolyzer.

[0041] The positioning column 4 corresponds one-to-one to the through hole on the sealing gasket 1 in the standard state, which means that when the sealing gasket 1 is in the standard state, the size of the positioning column 4 is consistent with the size of the corresponding through hole, that is, when the positioning column 4 passes through the corresponding through hole, the positioning column 4 fits with the side wall of the corresponding through hole; the through hole on the sealing gasket 1 in the deformed state should also have a positioning column 4 corresponding to it. When the sealing gasket 1 in the deformed state is installed on the correction device, the positioning column 4 can be passed through the corresponding through hole. At this time, due to the deformation of the through hole, the positioning column 4 does not necessarily fit with the side wall of the through hole. After the correction is completed, the sealing gasket 1 is in the standard state, and the side wall of the through hole fits with the positioning column 4.

[0042] Among them, the outer diameter of the cylinder 3 is the same as the inner diameter of the sealing gasket 1 in the standard state, and the positioning column 4 corresponds to the through hole on the sealing gasket 1 in the standard state one by one; and in the sealing gasket 1 used in the hydrogen production electrolyzer, the outer diameter of the sealing gasket 1 in the deformed state is smaller and the inner diameter is larger than that of the sealing gasket 1 in the standard state. In this way, when the heat treatment of the sealing gasket 1 in the deformed state is completed, the stress in the sealing gasket 1 is eliminated and the sealing gasket 1 is allowed to freely extend to the state before deformation on the correction device, the inner periphery of the sealing gasket 1 fits with the cylinder 3 and is restored to the standard state, and the through hole of the sealing gasket 1 fits with the positioning column 4 and is restored to the standard state, so the outer periphery of the sealing gasket 1 naturally extends outward and recovers to the standard state, completing the correction of the sealing gasket 1.

[0043] In addition, if Figure 6 and Figure 7 As shown, when a plurality of sealing gaskets 1 are corrected at the same time, they can be stacked and arranged 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 in a flat ring shape, and the two opposite sides in its axial direction are the first side surface and the second side surface.

[0045] It should be noted that due to its material properties, 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 based on the actual environmental conditions and the degree of deformation of the sealing gasket 1 to ensure that the sealing gasket 1 in a deformed state will not be damaged when placed on the correction device.

[0046] For example, if it is in a winter environment, the sealing gasket 1 is relatively hard, and the deformation degree of the deformed sealing gasket 1 is large, making it difficult for the positioning column 4 to pass through the corresponding through hole, then at this time, hard means should not be used to deform the sealing gasket 1 and pass the positioning column 4 through the corresponding through hole, which may easily cause damage to the sealing gasket 1; at this time, the deformed sealing gasket 1 can be subjected to a hot water bath or other means to soften it appropriately, and then the positioning column 4 can be passed through the corresponding through hole to fix the deformed sealing gasket 1.

[0047] Furthermore, when the sealing gasket 1 is relatively hard and the deformation degree of the sealing gasket 1 in the deformed state is small, the positioning column 4 can pass through the corresponding through hole, but the pressure ring 5 cannot flatten the sealing gasket 1, the above solution can also be used to soften the sealing gasket 1 appropriately before operating.

[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 a 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, when the sealing gasket 1 in a deformed state is installed on the correction device, the positive projection of the sealing gasket 1 at the first side surface is located within the edge of the first side surface; in this way, 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 the sealing gasket 1 from undergoing other unconstrained changes during the heat treatment process, and ensuring that the sealing gasket 1 is always flat.

[0050] refer to Figure 7 In the 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 sleeved on the cylinder 3, the overall structure of the pressure ring 5 and the ring seat 2 is more beautiful and neat; further, 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 a standard state, so the ring seat 2 and the pressure ring 5 are not only convenient for preliminary flattening of the sealing gasket 1 in a deformed state, but also effectively reduce the volume of the ring seat 2 and the pressure ring 5, and reduce 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] In this way, the correction device can be lifted by the hook 6, which is convenient for the transportation of the correction device; 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 is bent back toward the side of the ring seat 2 to form the above-mentioned hook 6; of course, this is only a preferred shape of the hook 6, which is easy to install and use, and does not limit the specific shape of the hook 6.

[0054] Specifically, a plurality of hooks 6 are axially arranged around the ring seat 2 on the inner circumference of the cylinder 3, and the plurality of hooks 6 are evenly spaced apart, so that when the correction device is lifted for transportation by the plurality of hooks 6, the correction device can be kept stable and shaking can be reduced; and one end of the strip steel bar away from the ring seat 2 is bent back toward the side of the ring seat 2 to form the hook 6, so that when the correction device is lifted, the pressure ring 5 is located above the ring seat 2 and is supported by the ring seat 2, and 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 correction device is easily shaken by lifting it through the hooks 6, and during the shaking process, the pressure ring 5 and the ring seat 2 may separate, resulting in a dangerous situation. Of course, the more hooks 6 there are, the more stable the lifting correction device is, but the cost will increase and the lifting operation will be complicated. Figure 4 As shown, in the embodiment of the present application, there are four hooks 6. Lifting the correction device with four hooks 6 is more stable, and the cost of the hooks 6 is lower, and the lifting operation is also simpler.

[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 a side of the pressure ring 5 facing away from the ring seat 2 .

[0057] Specifically, in the embodiment of the present application, there are two handles 7, and the two handles 7 are arranged opposite to each other in a first direction, and the first direction is perpendicular to the axial direction of the ring seat 2, so that it is convenient for the operator to grasp a handle 7 with both hands to 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 the two handles 7 to drive the pressure ring 5, so that the pressure ring 5 is sleeved on the cylinder 3 along the axial direction of the ring seat 2, so that the installation of the pressure ring 5 can be completed.

[0058] In addition, the number of handles 7 is not limited, and the pressing ring 5 can be pulled by the handles 7 .

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

[0060] like Figure 5 As shown, the first projection does not intersect with the first area, so when the positioning column 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 column 4 is divided into a first positioning column and a second positioning column, the first positioning column is a flat column, and the second positioning column is a cylindrical column; the shape of the positioning column 4 corresponds to 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 if Figure 3 As shown, the positioning column 4 has various shapes, such as Figure 3 The flat column and cylindrical shape in the figure do not limit the shape of the positioning column 4, but are only an embodiment. The shape of the positioning column 4 corresponds to the shape of the through hole on the sealing gasket 1 in the standard state, which means that when the positioning column 4 passes through the corresponding through hole on the sealing gasket 1 in the standard state, the positioning column 4 fits the side wall of the through hole, and the positioning column 4 does not affect the axial movement of the sealing gasket 1 on the ring seat 2. The shape of the positioning column 4 can be determined according to the shape of the through hole on the sealing gasket 1 in the standard state used in the actual hydrogen production electrolyzer.

[0063] In addition, the shape of the positioning column 4 corresponds to the shape of the positioning hole 51, which means that when the positioning column 4 passes through the corresponding positioning hole 51 on the pressure ring 5, the positioning column 4 fits against the side wall of the positioning hole 51, and the positioning column 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 column 4 away from the ring seat 2 and extend along the axial direction of the ring seat 2; wherein each threaded rod 8 is threadedly connected with a nut.

[0065] Specifically, Figure 3As shown, a threaded rod 8 is fixed to one end of the partial positioning column 4 away from the ring seat 2; the threaded rod 8, when the sealing gasket 1 is processed too much at one time or the deformation degree of the sealing gasket 1 is large, the pressure ring 5 presses the sealing gasket 1 by its own gravity, and then the nut can be screwed on the threaded rod 8 and slightly tightened, so that the pressure ring 5 can flatten multiple sealing gaskets 1, and multiple sealing gaskets 1 are stacked more compactly.

[0066] In addition, it has been introduced in the above content that the positioning column 4 can be a flat column or a cylindrical shape, etc. Therefore, in the embodiment of the present application, the threaded rod 8 is arranged on the cylindrical positioning column 4, which is more beautiful and neat; of course, the threaded rod 8 can also be arranged on the flat positioning column 4 to ensure that the nut can limit the pressure ring 5.

[0067] refer to Figure 3 In the exemplary embodiment, the cylinder 3 is divided into a first section and a second section in its 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 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, Figure 3 As shown, in the axial direction of the cylinder 3, when the outer diameter of the second section gradually shrinks from the first end to the second end, the sealing gasket 1 in a deformed state is sleeved on the outer periphery of the cylinder 3, and the operation is easier to complete, that is, the end of the cylinder 3 away from the ring seat 2 is easier to pass through the inner periphery of the sealing gasket 1, which effectively improves work efficiency.

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

[0070] refer to Figure 8 On the basis of the above-mentioned embodiment, the embodiment of the present application further provides a method for correcting a sealing gasket for a hydrogen production electrolyzer, which is applied to the above-mentioned device for correcting a sealing gasket for a hydrogen production electrolyzer. The method for correcting a sealing gasket for a hydrogen production electrolyzer may include the following steps:

[0071] S100, separating the pressing ring 5 from the cylinder 3;

[0072] S200, sleeve the sealing gasket 1 in a deformed state onto the outer periphery of the cylinder 3, and pass each positioning column 4 through the corresponding through hole;

[0073] S300, sleeve the pressure ring 5 onto the outer circumference of the cylinder 3, and insert each positioning column 4 through the corresponding positioning hole 51;

[0074] S400, heating the sealing gasket correction device for the hydrogen production electrolyzer on which the sealing gasket 1 is sleeved;

[0075] S500, cooling the hydrogen production electrolytic cell after heating with a sealing gasket correction device;

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

[0077] Among them, in step S100 and step S600, if the above-mentioned solution of adding threaded rod 8 and nut is adopted, before separating the pressure ring 5, the nut should be unscrewed first, and then the pressure ring 5 is moved axially along the ring seat 2 to make the pressure ring 5 away from the ring seat 2, and then 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 circumference of the cylinder 3 in the axial direction of the ring seat 2 .

[0079] In step S300, if the above-mentioned solution of adding threaded rod 8 and nut is adopted, then after the pressure ring 5 is sleeved on the outside of the cylinder 3 and the pressure ring 5 presses the sealing gasket 1 by its own gravity, 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] A constant temperature furnace is used to heat the sealing gasket correction device for the hydrogen production electrolyzer provided with the sealing gasket 1 for a preset time.

[0082] Specifically, the constant temperature furnace can be a hot air furnace or other types of heating furnaces. The size of the furnace cavity needs to meet the horizontal placement of the correction device, that is, the axial direction of the ring seat 2 is close to the gravity direction. The temperature of the constant temperature furnace can be set and work stably at a certain temperature. In this way, the constant temperature furnace is heated to a certain temperature to eliminate the stress in the sealing gasket 1 in a deformed state and allow the sealing gasket 1 material to freely extend on the sealing gasket correction device for the hydrogen production electrolyzer to the state before deformation.

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

[0084] According to the material properties of the sealing gasket 1 used in the hydrogen production electrolyzer, the constant temperature furnace is started after the heating temperature parameters are set, and the constant temperature furnace is continuously heated for a preset time after the set parameters are reached.

[0085] In step S500, after the constant temperature heating is completed, the sealing gasket 1 and the sealing gasket correction device for the hydrogen production electrolyzer are cooled to room temperature along with the constant temperature furnace. As the constant temperature furnace cools down, the sealing gasket 1 can be guaranteed to be shaped after being heated, stretched and recovered, thereby ensuring that the treated sealing gasket 1 can be restored to a standard state, achieving the purpose of correcting the sealing gasket 1 for reuse.

[0086] It should be understood that before setting the heating temperature and the preset time, the sealing gasket 1 in the deformed state should be inspected and classified, and the deformation state and deformation parameters of each sealing gasket 1 should be accurately recorded through inspection and measurement, and the smaller deformation and the larger deformation should be distinguished. In the subsequent heat treatment, the heat treatment parameters are determined according to the actual deformation state of the product.

[0087] Specifically, in one embodiment, the hole deformation of the sealing gasket 1 in a deformed state is about 6.8 mm, and 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 hours, 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 use standards, thereby realizing the reuse of the sealing gasket 1.

[0088] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A sealing gasket correction device for a hydrogen production electrolyzer, characterized in that: Used to correct a sealing gasket (1) in a deformed state to a standard state, the sealing gasket (1) having a plurality of through holes, the correction device comprising: A ring seat (2) having a first side surface and a second side surface which are arranged opposite to each other; A cylinder (3) is fixed to a side of the first side facing away from the second side, the axial direction of the cylinder (3) coincides with the axial direction of the ring seat (2), and the outer diameter of the cylinder (3) is the same as the inner diameter of the sealing gasket (1) in a standard state; A plurality of positioning posts (4), all of which are arranged on a side of the first side facing away from the second side and are distributed around the axial direction of the ring seat (2) on the outer periphery of the cylinder (3), and the positioning posts (4) extend along the axial direction of the ring seat (2), wherein the plurality of positioning posts (4) correspond one-to-one to the plurality of through holes on the sealing gasket (1) in a standard state; A pressure ring (5) is sleeved on the outer circumference of the cylinder (3) and has the freedom to slide axially along the ring seat (2). A plurality of positioning holes (51) are provided on the pressure ring (5), wherein the plurality of positioning columns (4) pass through the plurality of positioning holes (51) in a one-to-one correspondence.

2. The sealing pad correction device according to 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 a standard state.

3. The sealing gasket correction device for a hydrogen production electrolytic cell according to 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 production electrolytic cell according to claim 1, characterized in that: The correction device also includes: A plurality of hooks (6) are arranged around the inner circumference of the cylinder (3).

5. The sealing gasket correction device for a hydrogen production electrolytic cell according to claim 1, characterized in that: The correction device also includes: A plurality of handles (7) are arranged around a side of the pressure ring (5) facing away from the ring seat (2).

6. The sealing gasket correction device for a hydrogen production electrolytic cell according to claim 5, characterized in that: The positioning column (4) is divided into a first positioning column and a second positioning column, the first positioning column is in the shape of a flat column, and the second positioning column is in the shape of a cylinder; The shape of the positioning column (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 a standard state.

7. The sealing gasket correction device for a hydrogen production electrolytic cell according to claim 1, characterized in that: The correction device also includes: A plurality of threaded rods (8), each fixed to an end of the positioning column (4) away from the ring seat (2) and extending along the axial direction of the ring seat (2); Wherein, each of the threaded rods (8) is threadedly connected with a nut.

8. The sealing gasket correction device for a hydrogen production electrolytic cell according to claim 1, characterized in that: The cylinder (3) is divided into a first section and a second section in its 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 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.

9. A method for correcting a sealing gasket for a hydrogen production electrolyzer, characterized in that: The sealing gasket correction device for a hydrogen production electrolyzer according to any one of claims 1 to 8, wherein the sealing gasket correction method for a hydrogen production electrolyzer comprises: Separating the pressure ring (5) from the cylinder (3); The sealing gasket (1) in a deformed state is sleeved on the outer circumference of the cylinder (3), and each positioning column (4) is passed through the corresponding through hole; The pressure ring (5) is sleeved on the outer circumference of the cylinder (3), and each positioning column (4) is passed through the corresponding positioning hole (51); A sealing gasket correction device is used to heat the hydrogen production electrolytic cell on which the sealing gasket (1) is sleeved; Cooling the hydrogen production electrolytic cell after heating using a sealing gasket correction device; The pressure ring (5), the sealing gasket (1) and the cylinder (3) in the sealing gasket correction device for the hydrogen production electrolytic cell after being cooled are separated in sequence.

10. The method for correcting a sealing gasket for a hydrogen production electrolytic cell according to claim 9, characterized in that: The step of heating the sealing gasket correction device sleeved with the sealing gasket (1) comprises: The sealing gasket correction device for the hydrogen production electrolyzer on which the sealing gasket (1) is sleeved is heated for a preset period of time using a constant temperature furnace.

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