PEM water electrolysis hydrogen production device

Abstract

The PEM water electrolysis hydrogen production device comprises an upper end plate, a blind end plate, a bottom frame and a disc spring, the upper end plate comprises an upper end plate shell, upper pin holes are vertically formed in the left side and the right side of the upper end plate shell in a penetrating mode, the blind end plate comprises a blind end plate shell, and lower pin holes are vertically formed in the left side and the right side of the blind end plate shell in a penetrating mode. A limiting pin is arranged between the upper pin hole and the lower pin hole, the disc spring is connected to the outer side of the limiting pin in a sleeving mode, the upper end plate and the blind end plate are elastically connected through the disc spring, the bottom frame comprises a bottom frame shell, the blind end plate is installed at the upper end of the bottom frame shell, and the upper end plate shell, the blind end plate shell and the bottom frame shell are all made of glass fiber materials. The upper end plate shell, the blind end plate shell and the bottom frame shell are all filled with foam. According to the utility model, the upper end structural member and the blind end structural member are integrally designed by adopting a composite material, and a single composite material part can meet the integration of mechanical connection, structural design of a flow channel opening, insulation and heat dissipation functions.

Description

Technical Field

[0001] This utility model relates to the field of fuel cell technology, and in particular to a PEM water electrolysis hydrogen production device. Background Technology

[0002] Existing PEM (Polymer Electrolysis) water electrolysis hydrogen production systems basically include components such as a core, upper structure, blind-end structure, screw, and disc spring. The upper structure includes an upper end plate, upper current collector, and upper insulation plate. The blind-end structure includes a base frame, blind-end plate, blind-end current collector, and blind-end insulation plate. Existing technology has the following drawbacks:

[0003] The end plates and base frame are heavy, making them difficult to transport and flip.

[0004] The structure has many components, the assembly process is relatively complex, and the long assembly tolerance chain leads to low assembly accuracy.

[0005] The structural components are made of carbon steel and stainless steel, which cannot meet the corrosion protection requirements under severe corrosive conditions such as operation at sea;

[0006] The sealing structure of electrolyzed water products uses polytetrafluoroethylene or fluororubber. When there are many product sections, the creep of the material has a very large impact on the product pressing force, sometimes exceeding 70%, which is detrimental to the product's mechanical stability and long-term sealing requirements. Summary of the Invention

[0007] The purpose of this invention is to provide a PEM electrolysis water hydrogen production device.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] A PEM (Polymer Electrolysis) water electrolysis hydrogen production device, characterized in that it includes an upper end plate, a blind end plate, a base frame, and disc springs. The upper end plate includes an upper end plate shell, with upper pin holes extending vertically through its left and right sides. The blind end plate includes a blind end plate shell, with lower pin holes extending vertically through its left and right sides. A limiting pin is provided between the upper and lower pin holes. The disc springs are sleeved on the outside of the limiting pins. The upper end plate and the blind end plate are elastically connected by the disc springs. The base frame includes a base frame shell, with the blind end plate mounted on the upper end of the base frame shell. The upper end plate shell, the blind end plate shell, and the base frame shell are all made of fiberglass, and the interiors of the upper end plate shell, the blind end plate shell, and the base frame shell are all filled with foam.

[0010] Furthermore, the left and right end plates of the upper end plate shell are provided with mounting holes in the horizontal direction, and the mounting holes are provided with embedded metal parts.

[0011] Furthermore, the limiting pin includes a positioning post and an insulating block, the insulating block being integrally formed with the bottom end of the positioning post, and the disc spring being stacked on the insulating block.

[0012] Furthermore, a positioning sleeve is provided on the outer side of the positioning post, and the inner side of the disc spring is fitted with the outer side of the positioning sleeve.

[0013] Furthermore, the lower end of the chassis is provided with two forklift slots along the front-rear direction.

[0014] This utility model adopts a composite material to integrate the upper structural component and the blind end structural component. A single composite material part can meet the integration of mechanical connection, flow channel structure design, insulation and heat dissipation functions. While ensuring mechanical properties such as rigidity and strength, it achieves the effect of cost reduction and weight reduction.

[0015] This invention comprehensively considers the influence of temperature, internal air pressure and material creep on the pressing force, and adopts a variable stiffness disc spring combination. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the upper end plate of this utility model;

[0017] Figure 2 This is a sectional view of the upper end plate of this utility model;

[0018] Figure 3 This is a cross-sectional view of the blind end plate of this utility model;

[0019] Figure 4 This is a structural diagram of the base frame of this utility model;

[0020] Figure 5 This is a sectional view of the base frame of this utility model;

[0021] Figure 6 This is a structural diagram of the disc spring and limiting pin of this utility model;

[0022] Figure 7 This is a cross-sectional view of the disc spring and limiting pin of this utility model.

[0023] Figure label:

[0024] 1. Upper end plate, 101. Upper end plate housing, 102. Upper pin hole, 103. Mounting hole,

[0025] 2. Blind end plate, 201. Blind end plate housing, 202. Lower pin hole,

[0026] 3. Underframe, 301. Underframe housing, 302. Forklift slot,

[0027] 4 disc springs

[0028] 5 Limit pin, 501 Positioning post, 502 Insulating block, 503 Positioning sleeve. Detailed Implementation

[0029] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] This utility model discloses a PEM electrolysis water hydrogen production device, including an upper end plate 1, a blind end plate 2, a base frame 3 and a disc spring 4. The upper end plate 1 includes an upper end plate shell 101, the blind end plate 2 includes a blind end plate shell 201, and the base frame 3 includes a base frame shell 301. The blind end plate 2 is installed on the upper end of the base frame shell 301.

[0031] like Figure 1 and Figure 2 As shown, the upper plate 1 is made of a composite material of glass fiber-PMI75 foam-embedded metal parts, molded by compression molding, with a surface flatness of less than 0.5mm. The glass fiber is a single layer of 0.2mm glass fiber cloth, the resin is epoxy resin, the laying angle is (45 / -45 / 90 / 0 / 90)sym, the thickness of the glass fiber layer is 2mm, and the interior is filled with PMI-75 foam with a foam thickness of 66mm.

[0032] like Figure 2 As shown, the left and right end plates of the upper end plate 1 are provided with mounting holes 103 along the horizontal direction. The mounting holes 103 are provided with embedded metal parts. The embedded metal parts are made of TA2 and have a thickness of 8mm. The pole ears on both sides of the upper end plate 1 each have 10 φ10mm wiring holes, and the sides are rounded.

[0033] like Figure 3 As shown, the blind end plate 2 is made of a composite material of glass fiber-PMI75 foam-embedded metal parts, and is formed by molding process. The outer shell 201 of the blind end plate is made of a single layer of 0.2mm glass fiber cloth, the resin is epoxy resin, the laying angle is (45 / -45 / 90 / 0 / 90)sym, the thickness of the glass fiber layer is 2mm, the interior is filled with PMI-75 foam, the foam thickness is 46mm, and the flatness of the appearance surface is less than 0.5mm.

[0034] like Figure 4 and Figure 5 As shown, the base frame 3 is made of a composite material of fiberglass-PMI75 foam-embedded metal parts, and is formed by molding process. The outer fiberglass is a single layer of 0.2mm fiberglass cloth, the resin is epoxy resin, the laying angle is (45 / -45 / 90 / 0 / 90)sym, the thickness of the fiberglass layer is 2mm, and the interior is filled with PMI-75 foam. The upper surface is used for the assembly of the blind end plate of the product. The flatness of the appearance surface is less than 0.5mm. The lower end of the base frame 3 has two forklift slots 302 along the front and rear directions.

[0035] The upper end plate housing 101 has upper pin holes 102 extending vertically through the left and right sides, and the blind end plate housing 201 has lower pin holes 202 extending vertically through the left and right sides. A limiting pin 5 is provided between the upper pin hole 102 and the lower pin hole 202.

[0036] like Figure 6 and Figure 7 As shown, the disc spring 4 is sleeved on the outside of the limiting pin 5. The upper end plate 1 and the blind end plate 2 are elastically connected by the disc spring 4. The limiting pin 5 includes a positioning post 501 and an insulating block 502. The insulating block 502 is integrally formed with the bottom end of the positioning post 501. The disc spring 4 is stacked on the insulating block 502. The insulating block 502 is 30mm thick, which can block the temperature of the upper end plate 1 and reduce the thermal expansion load and creep generated by the disc spring 4 at high temperature.

[0037] The disc spring string adopts a 4-string 15 combination structure. Under operating conditions, the disc spring combination consisting of disc spring 4 and limit pin 5 is located at the inflection point of the stiffness curve. When the product undergoes creep, disc spring 4 relaxes relative to its initial position and has a smaller stiffness to compensate for more permanent core deformation. When bearing thermal expansion load and internal air pressure load, disc spring 4 continues to be compressed relative to its initial position and has a larger stiffness, which can compensate for air pressure load and utilize thermal expansion load, so that its airtightness is not affected too much.

[0038] like Figure 6 As shown, the inner diameter of the disc spring string is made of a positioning sleeve 503 with a thickness of 4mm. The assembly gap between the positioning sleeve 503 and the disc spring 4 is 0.5mm. The positioning sleeve 503 is used in conjunction with the insulating block 502 to insulate the upper end plate 1 and the blind end plate 2.

[0039] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A PEM electrolytic water hydrogen generator, characterized by, The utility model relates to a kind of spring-loaded blind end plate, including upper end plate (1), blind end plate (2), chassis (3) and disc spring (4), the upper end plate (1) includes upper end plate shell (101), the left and right sides of the upper end plate shell (101) are vertically provided with upper pin hole (102), the blind end plate (2) includes blind end plate shell (201), the left and right sides of the blind end plate shell (201) are vertically provided with lower pin hole (202), limiting pin (5) is arranged between the upper pin hole (102) and lower pin hole (202), disc spring (4) is sleeved on the outside of limiting pin (5), the upper end plate (1) and blind end plate (2) are elastically connected by disc spring (4), the chassis (3) includes chassis shell (301), the blind end plate (2) is installed on the upper end of chassis shell (301), the upper end plate shell (101), blind end plate shell (201) and chassis shell (301) are all glass fiber material, the inside of the upper end plate shell (101), blind end plate shell (201) and chassis shell (301) is filled with foam.

2. The PEM electrolytic water-splitting hydrogen generator of claim 1, wherein, The left and right ends of the upper end plate shell (101) are provided with mounting holes (103) along the horizontal direction, and a pre-embedded metal part is arranged in the mounting hole (103).

3. The PEM electrolytic water-splitting hydrogen generator of claim 1, wherein, The limiting pin (5) includes a positioning column (501) and an insulating block (502), the insulating block (502) is integrally formed with the bottom end of the positioning column (501), and the disc spring (4) is stacked on the insulating block (502).

4. The PEM electrolytic water-splitting hydrogen generator of claim 3, wherein, The outer side of the positioning column (501) is provided with a positioning sleeve (503), and the inner side of the disc spring (4) is matched with the outer side of the positioning sleeve (503).

5. The PEM electrolytic water-splitting hydrogen generator of claim 1, wherein, The lower end of the chassis (3) is provided with a forklift groove (302) in the front-rear direction.

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