Square electrolytic bath impact vibration protection assembly

Abstract

An impact vibration protection assembly of a square electrolytic bath belongs to the technical field of square electrolytic bath protection assemblies and comprises four L-shaped structural profiles and two end plates, one end plate is arranged on one side of a cuboid electrolytic bath pole frame, the other end plate is arranged on the other side opposite to the side of the cuboid electrolytic bath pole frame, and 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; the L-shaped structural section bar is connected with the end plate through the L-shaped angle bead; according to the invention, a reinforcing structure is added for the local stress concentration position of the square electrolytic cell, and the purpose of enhancing the sealing reliability and the structural reliability of the electrolytic cell is achieved through additional materials and structures fixed on the end plates or integrated with the end plates.

Description

Technical Field

[0001] The invention belongs to the technical field of protection components for square electrolytic cells, and particularly relates to an impact and vibration protection component for a square electrolytic cell. Background Art

[0002] Electrolytic cells include ALK alkaline water electrolysis and PEM water electrolysis, both of which are series structures composed of a plate-and-frame filter press structure. The electrolytic cell is the core device for hydrogen-electricity conversion and the place where the electrochemical reaction for electrolytic production of green hydrogen occurs. In various application scenarios, such as hoisting, transportation, vehicle-mounted mobility, loading and unloading, installation, etc., the electrolytic cell usually encounters impact and vibration. The bipolar plates, diaphragms, electrodes, and sealing components that make up the electrolytic cell may be thrown out of the plate-and-frame structure of the electrolytic cell during the impact and vibration of the system, resulting in problems such as seal failure, structural deformation, and material damage. With the increasingly widespread application of electrolytic cells, there is an urgent need for the design of structures and functional components that can improve the impact and vibration tolerance of electrolytic cells.

[0003] Among them, the square electrolytic cell has higher material utilization rate and lower cost. However, due to the stress concentration at the four corners of the square structure when subjected to the internal pressure and assembly force of the cell, the stress and deformation at the corners are more obvious. The problems brought about by this are not only the need for protection against bumps and vibrations during transportation, installation, and hoisting, but also the problem that the stress deformation at the corners will cause the seal to twist and fail, resulting in the seal failure of the electrolytic cell. The seal failure caused by the stress concentration at the corners is the core problem that needs to be solved for square high-voltage electrolytic cells. Summary of the Invention

[0004] In order to solve the above existing problems, the present invention proposes: an impact and vibration protection component for a square electrolytic cell, including four L-shaped structural profiles and two end plates. One end plate is provided on one side of the rectangular electrolytic cell electrode frame, and the other end plate is provided on the other side opposite to one side of the rectangular electrolytic cell electrode frame. The end plate is 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.

[0005] Further, the L-shaped structural profile is connected to the end plate through an L-shaped corner guard.

[0006] Further, L-shaped structural profile through holes are provided at the corner joints of the L-shaped structural profile, end plate threaded holes are provided at the corner joints of the end plate, and corner guard through holes are provided at the corner joints of the L-shaped corner guard. Bolts sequentially pass through the corner guard through holes, L-shaped structural profile through holes and are threadedly connected to the end plate threaded holes.

[0007] Further, a bolt fixing component is fixedly provided on the end plate.

[0008] Further, the fastening screw sequentially passes through the bolt fixing components facing each other on the two end plates and is fixedly connected by tightening the bolts.

[0009] Further, a lifting ring is arranged on the end face of the end plate.

[0010] Further, an insulating coating is coated on the surfaces of the L-shaped structural profiles, end plates, L-shaped corner guards, and bolts.

[0011] The beneficial effects of the present invention are as follows: For the local stress concentration positions of the square electrolytic cell, the present invention adds a reinforcing structure, and through additional materials and structures fixed to or integrated with the end plates, the purpose of enhancing the sealing reliability and structural reliability of the electrolytic cell is achieved. Description of the Drawings

[0012] Figure 1 It is a schematic structural diagram of the impact and vibration protection component of the square electrolytic cell of the present invention.

[0013] Among them, the reference numerals are:

[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 guard, 41. Corner guard through hole, 5. Fastening screw, 51. Bolt fixing component. Detailed Embodiments

[0015] To make the technical means and achieved purposes adopted by the present invention easy to understand, the present invention will be further described below in conjunction with the detailed embodiments. An impact and vibration protection component for a square electrolytic cell, as Figure 1 shown, includes four L-shaped structural profiles 2 and two end plates 3. One end plate 3 is arranged on one side of the cuboid electrolytic cell electrode frame 1, and another end plate 3 is arranged on the other side opposite to one side of the cuboid electrolytic cell electrode frame 1. The end plate 3 is rectangular in shape, and 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.

[0016] Among them, the L-shaped structural profile 2 is connected to the end plate 3 through an L-shaped corner guard 4.

[0017] Among them, an L-shaped structural profile through hole 21 is arranged at the corner connection of the L-shaped structural profile 2, an end plate threaded hole 32 is arranged at the corner connection of the end plate 3, a corner guard through hole 41 is arranged at the corner connection of the L-shaped corner guard 4, and the bolt 33 sequentially passes through the corner guard through hole 41 and the L-shaped structural profile through hole 21 and is threadedly connected to the end plate threaded hole 32.

[0018] Among them, a bolt fixing component 51 is fixedly arranged on the end plate 3.

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

[0020] Among them, a hoisting ring 31 is arranged on the end face of the end plate 3.

[0021] Among them, an insulating coating is coated on the surfaces of the L-shaped structural profile 2, the end plate 3, the L-shaped corner guard 4, and the bolt 33.

[0022] The L-shaped structural profile 2 is used as a structural support and penetrates through the electrolytic cell through the L-shaped corner guards 4 fixedly installed on both side end plates 3 of the electrolytic cell.

[0023] The material of the L-shaped structural profile 2 is aluminum, stainless steel, carbon steel, carbon fiber, glass fiber composite material. Usually, a profile with a high strength three-point bending strength ≥ 450 MPa and high toughness is selected.

[0024] The L-shaped corner guard 4 can be an integral structure of the end plate 3 or be fixed on the end plate 3 through the threaded holes and bolts on the end plate 3.

[0025] The L-shaped structural profiles at the four corners of the electrolytic cell provide reliable protection against the acceleration of the electrolytic cell in all directions. The outer structure of the electrolytic cell electrode frame 1 is in close contact with the L-shaped structural profile 2. Through the hole structure on the L-shaped corner guard 4, the outer surface of the L-shaped structural profile 2 is fixed and tightened with bolts, realizing the close contact between the L-shaped structural profile 2 and the outer frame 1 of the electrolytic cell.

[0026] There is an assembly gap in the structure between the through holes on the end plate 3 and the L-shaped corner guard 4. Through the threaded holes on the L-shaped corner guard 4 and the matching bolts, it is tightened to prevent the displacement of the profile.

[0027] Reliable insulation is required between the end plate 3 and the L-shaped structural profile 2. The L-shaped structural profile 2 is coated with an insulating layer, and PO, PI, PBI, PP, polysulfone, polyester, PEN, perfluoroplastic film, etc. can be used as the insulating coating material for the L-shaped structural profile 2.

[0028] The end plate 3 has an insulating coating on its surface. The material of the coating is PP, PE, PTFE, PFA, FEP, PEEK, PEKK, PPS or other composite polymer insulating materials added with organic and inorganic additives, 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 shape of the outer wall of the electrolytic cell in contact therewith has a mutually matching R-angle design. The range of the local R-angle is 1 mm < R < 100 mm. Through the close cooperation of the inner and outer layer R-angles, the stress concentration at the stress points is dispersed, preventing the bipolar plate and the membrane electrode in the electrolytic cell from being damaged at the stress concentration points when subjected to external 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 an insulating tape with an 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 and closely matched.

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

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

[0033] On the upper surface of the electrolytic cell end plate 3, there are hoisting counterbores for installing a hoisting ring 31. With the L-shaped structural profile 2 of the present invention, the electrolytic cell can be hoisted unilaterally or simultaneously on both sides.

[0034] The electrolytic cell is tightened by a fastening screw 5 through the bolt holes on the two end plates to clamp, thereby realizing the purpose of clamping the intermediate electrolytic cell bipolar plate frame 1 and preventing its relative position from slipping.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its concept of the present invention, making equivalent substitutions or changes, should be covered by the protection scope of the present invention.

Claims

1. An impact and vibration protection component for a square electrolytic cell, characterized in that, It includes four L-shaped structural profiles (2) and two end plates (3). One end plate (3) is arranged on one side of the rectangular electrolytic cell electrode frame (1), and the other end plate (3) is arranged on the other side opposite to one side of the rectangular electrolytic cell electrode 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 an L-shaped structural profile (2).

2. The shock and vibration protection assembly of the square electrolytic cell according to claim 1, characterized in that, The L-shaped structural profile (2) is connected to the end plate (3) through an L-shaped corner protector (4).

3. The impact and vibration protection assembly of the square electrolytic cell according to claim 2, characterized in that, An L-shaped structural profile through hole (21) is arranged at the corner connection of the L-shaped structural profile (2), an end plate threaded hole (32) is arranged at the corner connection of the end plate (3), a corner protector through hole (41) is arranged at the corner connection of the L-shaped corner protector (4), and a bolt (33) sequentially passes through the corner protector through hole (41), the L-shaped structural profile through hole (21) and is threadedly connected to the end plate threaded hole (32).

4. The shock and vibration protection assembly for the square electrolytic cell according to claim 1, characterized in that A bolt fixing assembly (51) is fixedly arranged on the end plate (3).

5. The shock and vibration protection assembly for the square electrolytic cell according to claim 4, characterized in that, A fastening screw rod (5) sequentially passes through the bolt fixing assemblies (51) opposite to each other on the two end plates (3) and is fixedly connected by tightening the bolt.

6. The shock and vibration protection assembly for the square electrolytic cell according to claim 1, characterized in that, A lifting ring (31) is arranged on the end face of the end plate (3).

7. The impact and vibration protection assembly of the square electrolytic cell according to claim 3, characterized in that The surfaces of the L-shaped structural profile (2), the end plate (3), the L-shaped corner protector (4), and the bolt (33) are coated with an insulating layer, and the surfaces are coated with an insulating coating layer.

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