An assembly positioning structure for an alkaline electrolyzer

Abstract

The utility model belongs to the alkaline electrolytic cell technical field, concretely relates to a kind of assembly positioning structure of alkaline electrolytic cell, including support platform and three locating rods, support platform is used to place end pressing plate, three locating rods are detachably connected with end pressing plate, three locating rods are equidistantly arranged on end pressing plate and all are perpendicular to end pressing plate, and three locating rods all include several rod bodies arranged along its axial direction, the diameter of two rod bodies adjacent in axial direction is same and is detachably connected, the space for stacking bipolar plate is formed in the area between three locating rods on end pressing plate, and the edge of bipolar plate is circumferentially spaced apart three locating grooves, and single locating groove is used to cooperate with the side surface of the rod body in single locating rod.The utility model can guarantee the alignment of flow channel hole during stacking process and the perpendicularity of stacking, improve the assembly efficiency and quality of alkaline electrolytic cell, reduce the secondary adjustment of stacking perpendicularity, reduce labor cost and assembly cost, and reduce the difficulty of locating rod removal.

Description

Technical Field

[0001] This utility model belongs to the field of alkaline electrolytic cell technology, and specifically relates to an assembly and positioning structure for an alkaline electrolytic cell. Background Technology

[0002] Alkaline electrolyzers are typically pressure-filter type structures, with a cylindrical main body composed of hundreds of identical or similar bipolar plates and other components, fastened together by end plates and tie rods. Current technology for assembling alkaline electrolyzers generally involves pre-drilling positioning holes in the bipolar plates. The stacked bipolar plates are positioned in sections by the interplay of these holes and positioning rods, and by manually adjusting the height of the positioning rods. However, this method is susceptible to human subjectivity; as the stacking height increases, radial misalignment gradually occurs, leading to a decrease in the verticality of the stacked bipolar plates. This affects the alignment of the flow channel holes, making subsequent adjustments difficult and costly, thus impacting the assembly efficiency and quality of the alkaline electrolyzer. Using a laser positioning device for verticality control is relatively expensive. Furthermore, given the large size of current alkaline electrolyzers, with bipolar plates stacked to several meters in height during assembly, using positioning rods longer than the final stacked height presents the problem of difficulty in removing the positioning rods after assembly. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an assembly positioning structure for alkaline electrolyzers that ensures the alignment of flow channel holes and the verticality of stacking during the stacking process, improves the assembly efficiency and quality of alkaline electrolyzers, reduces the need for secondary adjustments to stacking verticality, reduces labor and assembly costs, and reduces the difficulty of removing positioning rods.

[0004] This utility model includes a support platform and three positioning rods. The support platform is used to place an end pressure plate, and the three positioning rods are detachably connected to the end pressure plate. The three positioning rods are circumferentially equidistantly arranged on the end pressure plate and are all perpendicular to the end pressure plate. Each of the three positioning rods includes several rods arranged along its own axial direction. Two axially adjacent rods have the same diameter and are detachably connected. The area on the end pressure plate between the three positioning rods forms a space for stacking bipolar plates, and the edge of the bipolar plate is circumferentially spaced with three positioning grooves. Each positioning groove is used to cooperate with the side of a rod in a single positioning rod.

[0005] Furthermore, the end pressure plate is provided with several connecting holes circumferentially, and the bottom of the lowest rod of the single positioning rod is provided with a mating section extending axially. A limiting step is formed between the mating section and the lower end of the positioning rod. The mating section passes through the corresponding connecting hole, and the limiting step is used to limit the penetration depth of the mating section.

[0006] Furthermore, the bottom of the mating section is axially extended with a threaded section, and a nut is connected to the threaded section. The mating section is fixed relative to the connecting hole by the nut and the limiting step.

[0007] Furthermore, a washer is provided between the nut and the end pressure plate.

[0008] Furthermore, a reinforcing block is integrally provided on the side of the rod body with a mating section at the bottom. The bottom of the reinforcing block is flush with the limiting step, and the reinforcing block is located in the area where the rod body does not mate with the positioning groove.

[0009] Furthermore, in two axially adjacent rods, one end of one rod is axially provided with a threaded hole, and the other end of the rod is axially extended with a threaded section two. The two axially adjacent rods are detachably connected to the threaded hole through the threaded section two.

[0010] Furthermore, the rod is equipped with a lifting ring.

[0011] Furthermore, the lifting ring is radially hinged to the upper side of the rod via a pin.

[0012] Furthermore, the bipolar plate has three protrusions spaced circumferentially along its edge, and the three positioning grooves are correspondingly disposed on the three protrusions.

[0013] Furthermore, the shape of the positioning groove matches the shape of the side of the rod.

[0014] The beneficial effects of this invention are as follows: By using three positioning rods and three positioning slots on the edge of the bipolar plate, the radial and circumferential directions of the bipolar plate can be limited on its outer side. The number of positioning rods can be increased to accommodate the stacking height of the bipolar plates, avoiding positioning deviations caused by manually moving the positioning rods to adjust the stacking height. Since the rods have the same diameter, the radial distance between the side of the positioning rod and the bipolar plate remains consistent even with an increased number of rods. This effectively ensures the alignment of the flow channel holes and the verticality of the stack during stacking, improving the assembly efficiency and quality of the alkaline electrolytic cell, reducing the need for secondary adjustments to the stacking verticality, and lowering labor costs. Furthermore, it eliminates the need for laser positioning equipment, resulting in a simpler overall structure and reduced assembly costs. After assembly, the three positioning rods can be removed one by one from the outer side of the stacked bipolar plates without pulling them out along the stacking height, reducing the difficulty of removal and improving operational efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first usage state of the assembly and positioning structure of the alkaline electrolytic cell of this utility model.

[0016] Figure 2This is a schematic diagram of the second usage state of the assembly and positioning structure of the alkaline electrolytic cell of this utility model.

[0017] Figure 3 This is a schematic diagram of the third usage state of the assembly and positioning structure of the alkaline electrolytic cell of this utility model.

[0018] Figure 4 This is a schematic diagram of the structure of the lowest rod in a single positioning rod of this utility model.

[0019] Figure 5 This utility model Figure 4 A cross-sectional view of the area where the reinforcing block is located in the rod.

[0020] Figure 6 This utility model Figure 4 A schematic diagram of the connection between the rod and the connecting hole.

[0021] Figure 7 This is a schematic diagram of the structure of other rods in a single positioning rod of this utility model.

[0022] Figure 8 This is a schematic diagram showing the connection between two axially adjacent rods of this utility model.

[0023] Figure 9 This is a schematic diagram of the positioning groove of this utility model.

[0024] Figure 10 This is a schematic diagram showing the fit between the positioning groove and the rod body of this utility model.

[0025] In the diagram: 1. Support platform; 2. Positioning rod; 21. Rod body; 211. Mating section; 212. Threaded section one; 213. Nut; 214. Reinforcing block; 215. Lifting ring; 216. Threaded hole; 217. Threaded section two; 218. Pad; 3. Bipolar plate; 31. Positioning groove; 4. End pressure plate; 41. Connecting hole. Detailed Implementation

[0026] like Figures 1-10 As shown, this utility model provides an assembly and positioning structure for an alkaline electrolytic cell, including a support platform 1 and three positioning rods 2. The support platform 1 is used to place the end pressure plate 4 in the alkaline electrolytic cell. The three positioning rods 2 are detachably connected to the end pressure plate 4. After connection, the three positioning rods 2 are equidistantly spaced circumferentially on the end pressure plate 4 and perpendicular to it. The angle between the center point of two adjacent positioning rods 2 and the center point of the end pressure plate 4 is 120°. Each of the three positioning rods 2 includes several rod bodies 21 arranged along its own axial direction. Two axially adjacent rod bodies 21 have the same diameter and are detachably connected. The number of rod bodies 21 can be increased axially according to the stacking height of the bipolar plates 3, i.e., as shown in the figure. Figures 1-3As shown, the area on the end plate 4 between the three positioning rods 2 forms a space for stacking bipolar plates 3, and three positioning grooves 31 are circumferentially spaced along the edge of the bipolar plate 3. Each positioning groove 31 is used to engage with the side of the rod 21 in a single positioning rod 2 to circumferentially position the bipolar plate 3.

[0027] Based on the above configuration, this invention uses three positioning rods 2 and three positioning slots 31 on the edge of the bipolar plate 3 to limit the radial and circumferential positioning of the bipolar plate 3 on its outer side. By increasing the number of rods 21 in the positioning rods 2 to adapt to the stacking height of the bipolar plates 3, it avoids positioning deviations caused by manually moving the positioning rods 2 to adapt to the stacking height of the bipolar plates 3. Since the diameter of the rods 21 is the same, the radial distance between the side of the positioning rod 2 and the bipolar plate 3 remains consistent even after the number of rods 21 is increased. This effectively ensures the alignment of the flow channel holes and the verticality of the stack during the stacking process, improves the assembly efficiency and quality of the alkaline electrolytic cell, reduces the need for secondary adjustments to the stacking verticality, and lowers labor costs. Furthermore, it eliminates the need for equipment such as laser positioning devices, making the overall structure simpler and reducing assembly costs. After assembly, the three positioning rods 2 can be removed one by one from the outer side of the stacked bipolar plates 3 without pulling them out along the stacking height direction, reducing the difficulty of removing the positioning rods 2 and improving operational efficiency.

[0028] The end pressure plate 4 has several connecting holes 41 circumferentially arranged. The bottom of the lowest rod 21 of each positioning rod 2 has an axially extending mating section 211. The diameter of the mating section 211 is smaller than the diameter of the positioning rod 2, creating a limiting step between the mating section 211 and the lower end of the positioning rod 2. The mating section 211 passes through the corresponding connecting hole 41. The limiting step is located above the end pressure plate 4 to limit the insertion depth of the mating section 211 and form an axial support area for the rod 21, ensuring the axial perpendicularity of the rod 21.

[0029] In one embodiment of this utility model, the mating section 211 is inserted into the connecting hole 41. In a preferred embodiment of this utility model, the bottom of the mating section 211 is axially extended with a threaded section 212, and a nut 213 is connected to the threaded section 212. The mating section 211 is fixed relative to the connecting hole 41 by the nut 213 and the limiting step. Specifically, the nut 213 is located below the end pressure plate 4. By tightening the nut 213, the nut 213 and the positioning step clamp the end pressure plate 4, thereby fixing the mating section 211 to the connecting hole 41. In this preferred embodiment, the stability of the rod 21 and the connecting hole 41 can be effectively ensured, thereby ensuring the axial perpendicularity of the positioning rod 2 during the assembly and positioning process.

[0030] A washer 218 is also provided between the nut 213 and the end pressure plate 4. On the one hand, it can prevent loosening, and on the other hand, it can disperse the pressure applied when the nut 213 is tightened, reducing damage to the end pressure plate 4.

[0031] The rod 21, with a mating section 211 at the bottom, also has an integrally formed reinforcing block 214 on its side. The bottom of the reinforcing block 214 is flush with the limiting step. The reinforcing block 214 and the positioning step together form the axial support area of ​​the rod 21, increasing the resistance to axial displacement at the lower end of the rod 21. Figures 1-3 As shown, the reinforcing block 214 is located in the area where the rod 21 does not mate with the positioning groove 31, and will not affect the radial and circumferential limiting of the bipolar plate 3.

[0032] In two axially adjacent rods 21, one rod 21 has an axially threaded hole 216 at one end, and the other rod 21 has an axially extending threaded section 217 at one end. The two axially adjacent rods 21 are detachably connected to the threaded hole 216 via the threaded section 217. This connection method is secure and reliable, easy to assemble and disassemble, and effectively ensures the axial perpendicularity of the rods 21 after connection. The structure of the lowest rod 21 in a single positioning rod 2 is as follows: Figure 4 As shown, one end of the rod 21 is provided with a mating section 211 and a threaded section 212, and the other end is provided with a threaded hole 216. The structure of the other rods 21 in a single positioning rod 2 is as follows: Figure 7 As shown, one end of the other rod 21 is provided with a threaded section 217, and the other end is provided with a threaded hole 216.

[0033] The rod 21 is provided with a lifting ring 215 to facilitate the hoisting of the rod 21. The lifting ring 215 is radially hinged to the upper side of the rod 21 via a pin. Based on this configuration, the lifting ring 215 can be rotated to a vertical position during hoisting to facilitate the vertical hoisting of the rod 21 and alignment with the already installed rod 21.

[0034] The bipolar plate 3 has three protrusions spaced apart circumferentially along its edge, and the three positioning grooves 31 are correspondingly disposed on the three protrusions. Based on this arrangement, the positioning grooves 31 do not need to occupy the original size space of the bipolar plate 3, thus avoiding any impact on the strength or other properties of the bipolar plate 3 body.

[0035] The shape of the positioning groove 31 matches the shape of the side of the rod 21. For example, if the rod 21 is cylindrical, the positioning groove 31 is arc-shaped to better fit the side of the rod 21.

[0036] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of protection of this application is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of one or more embodiments of this application as described above, which are not provided in detail for the sake of brevity.

[0037] One or more embodiments in this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this application should be included within the protection scope of this application.

Claims

1. An assembly and positioning structure for an alkaline electrolytic cell, characterized in that, The device includes a support platform (1) and three positioning rods (2). The support platform (1) is used to place the end pressure plate (4). The three positioning rods (2) are detachably connected to the end pressure plate (4). The three positioning rods (2) are circumferentially equidistant on the end pressure plate (4) and are perpendicular to the end pressure plate (4). Each of the three positioning rods (2) includes several rods (21) arranged along its own axis. Two axially adjacent rods (21) have the same diameter and are detachably connected. The area on the end pressure plate (4) between the three positioning rods (2) forms a space for stacking bipolar plates (3). The edge of the bipolar plate (3) is circumferentially spaced with three positioning grooves (31). Each positioning groove (31) is used to cooperate with the side of the rod (21) in a single positioning rod (2).

2. The assembly and positioning structure of the alkaline electrolytic cell as described in claim 1, characterized in that, The end plate (4) is provided with several connecting holes (41) in the circumferential direction. The bottom of the rod body (21) at the bottom of the single positioning rod (2) is provided with a mating section (211). A limiting step is formed between the mating section (211) and the lower end of the positioning rod (2). The mating section (211) passes through the corresponding connecting hole (41). The limiting step is used to limit the penetration depth of the mating section (211).

3. The assembly and positioning structure of the alkaline electrolytic cell as described in claim 2, characterized in that, The bottom of the mating section (211) is axially extended with a threaded section (212), and a nut (213) is connected to the threaded section (212). The mating section (211) is fixed relative to the connecting hole (41) by the nut (213) and the limiting step.

4. The assembly and positioning structure of the alkaline electrolytic cell as described in claim 3, characterized in that, A washer (218) is also provided between the nut (213) and the end pressure plate (4).

5. The assembly and positioning structure of the alkaline electrolytic cell as described in any one of claims 2-4, characterized in that, The rod (21) with a mating section (211) at the bottom is also integrally provided with a reinforcing block (214) on the side. The bottom of the reinforcing block (214) is flush with the limiting step, and the reinforcing block (214) is located in the area where the rod (21) does not mate with the positioning groove (31).

6. The assembly and positioning structure of the alkaline electrolytic cell as described in any one of claims 1-4, characterized in that, In two axially adjacent rods (21), one end of the rod (21) is provided with a threaded hole (216), and the other end of the rod (21) is provided with a threaded section two (217) extending axially. The two axially adjacent rods (21) are detachably connected to the threaded hole (216) through the threaded section two (217).

7. The assembly and positioning structure of the alkaline electrolytic cell as described in any one of claims 1-4, characterized in that, A lifting ring (215) is provided on the rod (21).

8. The assembly and positioning structure of the alkaline electrolytic cell as described in claim 7, characterized in that, The lifting ring (215) is radially hinged to the upper side of the rod (21) via a pin.

9. The assembly and positioning structure of the alkaline electrolytic cell as described in any one of claims 1-4 and 8, characterized in that, The edge of the bipolar plate (3) is provided with three protrusions spaced apart, and the three positioning grooves (31) are respectively provided on the three protrusions.

10. The assembly and positioning structure of the alkaline electrolytic cell as described in claim 9, characterized in that, The shape of the positioning groove (31) matches the shape of the side of the rod (21).

Images