Assembly device for preventing impact vibration of square electrolytic cell

Abstract

An assembly device for preventing impact vibration of a square electrolytic cell belongs to the technical field of square electrolytic cell protection assemblies and comprises four L-shaped structural profiles and two end plates, one end plate is fastened on one side of a cuboid electrolytic cell pole frame, and the other end plate is fastened on the other side opposite to the side of the cuboid electrolytic cell pole frame. The end plates are rectangular, each corner of one end plate is connected with the corresponding corner of the other end plate through an L-shaped structural profile, and the inner walls of the L-shaped structural profiles are arranged on the cuboid electrolytic cell electrode frame in a fastened mode. The L-shaped structural section bar is connected with the end plate through the L-shaped angle bead; according to the utility model, aiming at the local stress concentration position of the square electrolytic cell, a reinforcing structure is added, and the aim of enhancing the sealing reliability and the structural reliability of the electrolytic cell is fulfilled through additional materials and structures which are fixed on the end plates or are integrated with the end plates.

Description

Technical Field

[0001] This utility model belongs to the technical field of protective components for square electrolytic cells, specifically relating to a component device for protecting square electrolytic cells from impact vibration. Background Technology

[0002] Electrolyzers, including ALK alkaline water electrolysis and PEM water electrolysis, are series structures composed of plate and frame filter presses. The electrolyzer is the core device for hydrogen electroconversion, the site of the electrochemical reaction for producing green hydrogen. Electrolyzers are frequently subjected to impact and vibration in various applications, such as hoisting, transportation, vehicle-mounted transport, loading and unloading, and installation. The bipolar plates, diaphragms, electrodes, and sealing components that make up the electrolyzer may be thrown out of the plate and frame structure during these impacts and vibrations, causing seal failure, structural deformation, and material damage. With the increasingly widespread application of electrolyzers, there is an urgent need for the design of structural and functional components that can improve the impact and vibration resistance of electrolyzers.

[0003] Square electrolytic cells offer higher material utilization and lower costs. However, the corners of the square structure experience significant stress concentration due to internal pressure and assembly forces, leading to noticeable stress and deformation. This results in problems not only requiring protection against impacts and vibrations during transportation, installation, and hoisting, but also the stress deformation at the corners can cause seal failure due to twisting of the seals. Stress concentration at the corners causing seal failure is the core issue that needs to be addressed in square high-pressure electrolytic cells. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a component device for protecting a square electrolytic cell from impact vibration, comprising four L-shaped structural profiles and two end plates. One end plate is fastened to one side of the cuboid electrolytic cell electrode frame, and another end plate is fastened to the opposite side of the cuboid electrolytic cell electrode frame. The end plates are rectangular in shape, and each corner of one end plate is connected to the corresponding corner of the other end plate through an L-shaped structural profile. The inner wall of the L-shaped structural profile is fastened to the cuboid electrolytic cell electrode frame.

[0005] Furthermore, the L-shaped structural profile is connected to the end plate via L-shaped corner protectors.

[0006] Furthermore, the corner joints of the L-shaped structural profile are provided with L-shaped structural profile through holes, the corner joints of the end plate are provided with end plate threaded holes, and the corner joints of the L-shaped corner protectors are provided with corner protector through holes. Bolts are threaded through the corner protector through holes, the L-shaped structural profile through holes, and the end plate threaded holes in sequence.

[0007] Furthermore, a bolt fixing assembly is fixedly installed on the end plate.

[0008] Furthermore, the fastening screws pass through the opposing bolt fixing assemblies on the two end plates in sequence, and the connection is fixed by tightening the bolts.

[0009] Furthermore, a lifting ring is provided on the end face of the end plate.

[0010] Furthermore, the L-shaped structural profile, end plate, L-shaped corner protector, and bolt surfaces are covered with an insulating coating.

[0011] The beneficial effects of this utility model are as follows: This utility model adds a reinforcing structure to the local stress concentration location of the square electrolytic cell. By using additional materials and structures fixed to or integrated with the end plate, the sealing reliability and structural reliability of the electrolytic cell are enhanced. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the component device for protecting a square electrolytic cell from impact vibration according to this utility model.

[0013] The attached figures are labeled as follows:

[0014] 1. Electrolytic cell electrode frame; 2. L-shaped structural profile; 21. L-shaped structural profile through hole; 3. End plate; 31. Lifting ring; 32. End plate threaded hole; 33. Bolt; 4. L-shaped corner protector; 41. Corner protector through hole; 5. Fastening screw; 51. Bolt fixing assembly. Detailed Implementation

[0015] To make the technical means and objectives of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments, such as a component device for protecting a square electrolytic cell from impact vibration. Figure 1 As shown, it includes four L-shaped structural profiles 2 and two end plates 3. One end plate 3 is fastened to one side of the cuboid electrolytic cell electrode frame 1, and another end plate 3 is fastened to the other side opposite to one side of the cuboid electrolytic cell electrode frame 1. The end plates 3 are rectangular in shape. Each corner of one end plate 3 is connected to the corresponding corner of the other end plate 3 through an L-shaped structural profile 2. The inner wall of the L-shaped structural profile 2 is fastened to the cuboid electrolytic cell electrode frame 1.

[0016] The L-shaped structural profile 2 is connected to the end plate 3 via L-shaped corner protectors 4.

[0017] The L-shaped structural profile 2 has an L-shaped structural profile through hole 21 at its corner connection, the end plate 3 has an end plate threaded hole 32 at its corner connection, and the L-shaped corner protector 4 has a corner protector through hole 41 at its corner connection. The bolt 33 passes through the corner protector through hole 41, the L-shaped structural profile through hole 21, and the end plate threaded hole 32 in sequence for threaded connection.

[0018] The end plate 3 is fixedly provided with a bolt fixing assembly 51.

[0019] Among them, the fastening screw 5 passes through the opposite bolt fixing assembly 51 on the two end plates 3 in sequence, and is fixedly connected by tightening the bolts.

[0020] A lifting ring 31 is provided on the end face of the end plate 3.

[0021] The L-shaped structural profile 2, end plate 3, L-shaped corner protector 4, and bolt 33 are covered with an insulating coating.

[0022] An L-shaped structural profile 2 is used as a structural support, and L-shaped corner protectors 4 are installed and fixed on the end plates 3 on both sides of the electrolytic cell, penetrating the electrolytic cell.

[0023] The L-shaped structural profile 2 is made of aluminum, stainless steel, carbon steel, carbon fiber, and glass fiber composite materials. It typically selects profiles with high strength, three-point bending strength ≥450MPa, and high toughness.

[0024] The L-shaped corner protector 4 can be an integral part of the end plate 3, or it can be fixed to the end plate 3 through threaded holes and bolts.

[0025] The L-shaped structural profiles at the four corners of the electrolytic cell provide reliable protection against acceleration in all directions. The outer structure of the electrolytic cell electrode frame 1 and the L-shaped structural profile 2 are in close contact. Through the holes in the L-shaped corner protectors 4, bolts are used to fix and tighten the outer surface of the L-shaped structural profile 2, thus achieving close contact between the L-shaped structural profile 2 and the outer frame 1 of the electrolytic cell.

[0026] There is an assembly gap between the through hole on the end plate 3 and the L-shaped corner protector 4. The L-shaped corner protector 4 is tightened by the threaded hole and the matching bolts to prevent the profile from shifting.

[0027] Reliable insulation is required between end plate 3 and L-shaped structural profile 2. The L-shaped structural profile 2 is covered with an insulating layer, which can be made of PO, PI, PBI, PP, polysulfone, polyester, PEN, perfluoroplastic film, etc.

[0028] The surface of end plate 3 has an insulating coating. The coating material is PP, PE, PTFE, PFA, FEP, PEEK, PEKK, PPS or other composite polymer insulating materials with added organic and inorganic additives, such as PVDF, modified polyvinylidene fluoride, ABS, silicon dioxide, silicon, titanium oxide, nickel oxide, nickel, tantalum, cerium oxide, etc.

[0029] The L-shaped structural profile 2 closely adheres to the inner wall of the electrolytic cell, and the R-angle design of the shape of the outer wall of the electrolytic cell in contact with it is mutually coordinated. The range of the local R-angle is 1 mm < R < 100 mm. Through the close coordination of the inner and outer layer R-angles, it is used to disperse the stress concentration at the stress points, preventing the bipolar plate and membrane electrode in the electrolytic cell from being damaged in structure at the stress concentration point when subjected to external force impact and vibration.

[0030] The surface of the L-shaped structural profile 2 is coated with insulating polymers such as PP, PE, PTFE, PFA, FEP, FKM, PEEK, PPS or composite polymer insulating materials added with organic or inorganic additives. Or an insulating gasket is laid between the L-shaped corner guard 4 and the outer wall of the electrolytic cell. Or the outer surface of the L-shaped structural profile is directly coated with insulating tapes with adhesive backing, such as insulating tapes of PI, PAI, polyester, PVC, PES, etc. When the electrolytic cell uses a polymer plastic outer frame, the insulating layer or insulating gasket can be not used, and the L-shaped structural profile and the outer wall of the electrolytic cell can be directly closely coordinated.

[0031] The above insulating structure and material design make the present utility model not only applicable to the electrolytic cell design using insulating materials for the electrode frame, but also enable the present utility model to be applied to the electrolytic cell design with a metal electrode frame.

[0032] The anti-loosening nut abuts against the contact end on the side wall of the L-shaped corner guard 4 and has an insulating layer, achieving reliable insulation between the L-shaped structural profile 2, the end plate 3 and the electrolytic cell electrode frame 1.

[0033] On the upper surface of the electrolytic cell end plate 3, there are hoisting counterbores, and a hoisting ring 31 can be installed. With the L-shaped structural profile 2 of the present utility model, the one-side hoisting or the two-side simultaneous hoisting method can be adopted.

[0034] The electrolytic cell tightens the bolt holes on the two end plates through the fastening screw 5 and clamps them, thereby achieving the purpose of clamping the middle electrolytic cell electrode frame 1 and preventing its relative position from slipping.

[0035] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent replacements or changes, and should be covered within the protection scope of the present utility model.

Claims

1. A component device for protecting a square electrolytic cell from impact vibration, characterized in that, It includes four L-shaped structural profiles (2) and two end plates (3). One end plate (3) is fastened to one side of the cuboid electrolytic cell pole frame (1), and another end plate (3) is fastened to the other side opposite to one side of the cuboid electrolytic cell pole frame (1). The end plate (3) is rectangular in shape. Each corner of one end plate (3) is connected to the corresponding corner of the other end plate (3) through one L-shaped structural profile (2). The inner wall of the L-shaped structural profile (2) is fastened to the cuboid electrolytic cell pole frame (1).

2. The component device for protecting a square electrolytic cell from impact vibration as described in claim 1, characterized in that, The L-shaped structural profile (2) is connected to the end plate (3) through L-shaped corner protectors (4).

3. The component device for protecting a square electrolytic cell from impact vibration as described in claim 2, characterized in that, The L-shaped structural profile (2) has an L-shaped structural profile through hole (21) at the corner connection, the end plate (3) has an end plate thread hole (32) at the corner connection, and the L-shaped corner protector (4) has a corner protector through hole (41) at the corner connection. The bolt (33) passes through the corner protector through hole (41), the L-shaped structural profile through hole (21) and the end plate thread hole (32) in sequence for threaded connection.

4. The component device for protecting a square electrolytic cell from impact vibration as described in claim 1, characterized in that, A bolt fixing assembly (51) is fixedly installed on the end plate (3).

5. The component device for protecting a square electrolytic cell from impact vibration as described in claim 4, characterized in that, The fastening screw (5) passes through the opposing bolt fixing components (51) on the two end plates (3) in sequence, and is fixedly connected by tightening the bolts.

6. The component device for protecting a square electrolytic cell from impact vibration as described in claim 1, characterized in that, A lifting ring (31) is provided on the end face of the end plate (3).

7. The component device for protecting a square electrolytic cell from impact vibration as described in claim 3, characterized in that, The L-shaped structural profile (2), end plate (3), L-shaped corner protector (4), and bolt (33) are covered with an insulating layer, and the surface is covered with an insulating plating layer.

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