Sealing assembly of electrolytic water hydrogen production tank

Abstract

The invention relates to the technical field of electrolytic bath sealing, and discloses a sealing assembly of a water electrolysis hydrogen production tank, the sealing assembly comprises a hollow sealing piece, and an assembling groove is formed in the inner side wall of the sealing piece in the circumferential direction; the diaphragm is arranged on the inner ring of the sealing piece, a clamping strip is arranged on the outer edge of the diaphragm in the circumferential direction, and the diaphragm seals the inner ring of the sealing piece by clamping the clamping strip into the assembling groove. According to the invention, gas and electrolyte can be ensured not to leak under the severe conditions of high pressure, high temperature, acid-base corrosion and the like in the electrolytic cell, and the smooth hydrogen production process and the long-term stable operation of the system are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic cell sealing, and in particular to a sealing component of a water electrolysis hydrogen production cell. Background Art

[0002] Hydrogen energy has attracted widespread attention as a clean and efficient energy source. Hydrogen energy preparation is an important part of this field, among which water electrolysis has gradually become the mainstream hydrogen production method. In water electrolysis hydrogen production equipment, the electrolyzer is one of the core equipment, and its sealing performance directly affects the hydrogen production efficiency and system safety.

[0003] Therefore, there is an urgent need for a sealing component for a water electrolysis hydrogen production cell. Summary of the invention

[0004] The object of the present invention is to provide a sealing assembly for a water electrolysis hydrogen production tank, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a sealing component for a water electrolysis hydrogen production tank, comprising:

[0006] A sealing member, wherein the sealing member is hollow and an inner wall of the sealing member is circumferentially provided with an assembly groove;

[0007] A diaphragm, wherein the diaphragm is arranged on the inner ring of the sealing member, and a clamping strip is arranged on the circumference of the outer edge of the diaphragm, and the clamping strip is clamped into the assembly groove so that the diaphragm can seal the inner ring of the sealing member;

[0008] The plate frame has a sealing groove formed therein, and the sealing member is arranged in the sealing groove.

[0009] Optionally, the assembly groove includes a first groove circumferentially opened on the inner wall of the seal and a second groove connected to the bottom surface of the first groove, the first groove is used to accommodate the outer edge of the diaphragm, and the second groove is used to accommodate the clamping strip, and the cross-sectional size of the clamping strip is larger than the width of the first groove.

[0010] Optionally, the clamping strip is interference fit with the second groove.

[0011] Optionally, the pole plate frame includes a pair of half frames, and half slots are symmetrically provided on both end surfaces of the half frames, and the two half slots on opposite end surfaces of the two half frames form the sealing slot.

[0012] Optionally, the sealing member is interference fit with the sealing groove.

[0013] Optionally, a plurality of first sealing ribs are circumferentially arranged on the surface of the sealing member.

[0014] Optionally, the sealing component is provided with a liquid flow hole and a liquid flow drainage channel connected to the liquid flow hole.

[0015] Optionally, a second sealing rib is circumferentially arranged on the outer edge of the liquid flow hole and the liquid flow guide channel.

[0016] Optionally, the sealing component is provided with an air flow hole and an air flow channel connected to the air flow hole.

[0017] Optionally, a third sealing rib is circumferentially arranged on the outer edge of the air flow hole and the air hole drainage channel.

[0018] The present invention discloses the following technical effects:

[0019] By setting the diaphragm on the inner ring of the seal and limiting the position of the diaphragm by the assembly groove and the clamping strip, a sealing component with high sealing degree is formed, which not only reduces the difficulty of assembling and sealing the electrolyzer, but also simplifies the production process of the sealing component and reduces the hidden danger of poor sealing effect of the sealing component. By opening a sealing groove in the plate frame, the stability of the seal assembly compression can be effectively improved, thereby improving the sealing effect and extending the sealing life, ensuring that the gas and electrolyte do not leak under harsh conditions such as high pressure, high temperature, acid and alkaline corrosion inside the electrolyzer, thereby ensuring the smooth progress of the hydrogen production process and the long-term stable operation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of AA in the middle;

[0023] Figure 3 for Figure 1 Schematic diagram of the middle BB;

[0024] Figure 4 is a schematic cross-sectional view of a seal of the present invention;

[0025] Figure 5 It is a schematic cross-sectional view of the electrode frame of the present invention.

[0026] In the figure: 1, sealing member; 2, assembly groove; 21, first groove; 22, second groove; 3, diaphragm; 4, clamping strip; 5, plate frame; 51, half frame; 6, sealing groove; 61, half tank; 7, first sealing rib; 8, liquid flow hole; 9, liquid flow drainage channel; 10, second sealing rib; 11, air flow hole; 12, air hole drainage channel; 13, third sealing rib. DETAILED DESCRIPTION

[0027] 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.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figure 1-Figure 5 The present invention provides a sealing component for a water electrolysis hydrogen production tank, comprising:

[0030] The sealing member 1 is hollow and has an assembly groove 2 circumferentially formed on the inner wall of the sealing member 1;

[0031] The diaphragm 3 is arranged on the inner ring of the sealing member 1. A clamping strip 4 is arranged on the circumference of the outer edge of the diaphragm 3. The clamping strip 4 is clamped into the assembly groove 2 so that the diaphragm 3 can seal the inner ring of the sealing member 1.

[0032] The plate frame 5 has a sealing groove 6 formed therein, and the sealing member 1 is arranged in the sealing groove 6 .

[0033] By arranging the diaphragm 3 in the inner ring of the seal 1 and limiting the position of the diaphragm 3 by the assembly groove 2 and the clamping strip 4, a sealing component with high sealing degree is formed, which not only reduces the difficulty of assembling and sealing the electrolytic cell, but also simplifies the production process of the sealing component, thereby reducing the hidden danger of poor sealing effect of the sealing component;

[0034] By providing the sealing groove 6 in the pole plate frame 5, the stability of the assembly compression of the sealing member 1 can be effectively improved, thereby improving the sealing effect and extending the sealing life.

[0035] Furthermore, the sealing member 1 is made of acid- and alkali-resistant rubber material, including elastic materials such as EPDM rubber and fluororubber, and is vulcanized.

[0036] Furthermore, the membrane 3 is rolled to wrap the clamping strip 4, and the membrane 3 is clamped by utilizing the elasticity of rubber.

[0037] Furthermore, the diaphragm 3 is made of materials such as polyphenylene sulfide and perfluorosulfonic acid, and ions can separate gases at the same time to avoid potential safety hazards caused by gas mixing.

[0038] Furthermore, the clamping strip 4 is made of materials such as polytetrafluoroethylene and polyphenylene sulfide.

[0039] Further optimizing the scheme, the assembly groove 2 includes a first groove 21 circumferentially opened on the inner side wall of the seal 1 and a second groove 22 connected to the bottom surface of the first groove 21, the first groove 21 is used to accommodate the outer edge of the diaphragm 3, and the second groove 22 is used to accommodate the clamping strip 4, and the cross-sectional size of the clamping strip 4 is greater than the width of the first groove 21. The clamping strip 4 and the second groove 22 are interference fit to ensure that the clamping strip 4 clamps the diaphragm 3.

[0040] In a further optimized solution, the plate frame 5 includes a pair of half frames 51, and half slots 61 are symmetrically opened on both end surfaces of the half frames 51, and the two half slots 61 on the opposite end surfaces of the two half frames 51 form a sealing groove 6. The seal 1 is interference fit with the sealing groove 6, and the seal 1 elastically deforms to produce a seal to prevent gas and liquid leakage, and half slots 61 are symmetrically opened on both end surfaces of the half frames 51, and multiple layers of seals 1 can be provided through multiple plate frames 5.

[0041] According to a further optimized solution, a plurality of first sealing ribs 7 are circumferentially arranged on the surface of the sealing member 1 .

[0042] The first sealing rib 7 is used to increase the sealing contact stress while reducing the required compression force.

[0043] Further optimization scheme, the sealing member 1 is provided with a liquid flow hole 8 and a liquid flow drainage channel 9 connected to the liquid flow hole 8. A second sealing rib 10 is circumferentially arranged on the outer edge of the liquid flow hole 8 and the liquid flow drainage channel 9. The sealing member 1 is provided with an air flow hole 11 and an air hole drainage channel 12 connected to the air flow hole 11. A third sealing rib 13 is circumferentially arranged on the outer edge of the air flow hole 11 and the air hole drainage channel 12.

[0044] The second sealing rib 10 and the third sealing rib 13 can prevent gas and electrolyte leakage.

[0045] The sealing member 1 is preferably round or square.

[0046] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0047] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A sealing assembly for a water electrolysis hydrogen production tank, characterized in that: include: A sealing member (1), wherein the sealing member (1) is hollow and an inner wall of the sealing member (1) is provided with a mounting groove (2) in the circumferential direction; A diaphragm (3), the diaphragm (3) being arranged on the inner ring of the sealing member (1), and a clamping strip (4) being arranged on the circumference of the outer edge of the diaphragm (3), and the diaphragm (3) can seal the inner ring of the sealing member (1) by clamping the clamping strip (4) into the assembly groove (2); A polar plate frame (5), wherein a sealing groove (6) is provided in the polar plate frame (5), and the sealing member (1) is arranged in the sealing groove (6).

2. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: The assembly groove (2) comprises a first groove (21) circumferentially opened on the inner wall of the sealing member (1) and a second groove (22) connected to the bottom surface of the first groove (21), the first groove (21) being used to accommodate the outer edge of the diaphragm (3), and the second groove (22) being used to accommodate the clamping strip (4), the cross-sectional dimension of the clamping strip (4) being greater than the width of the first groove (21).

3. The sealing assembly of a water electrolysis hydrogen production tank according to claim 2, characterized in that: The clamping strip (4) and the second groove (22) are interference fit.

4. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: The pole plate frame (5) comprises a pair of half-frames (51), and half-slots (61) are symmetrically provided on both end surfaces of the half-frames (51). The two half-slots (61) on the opposite end surfaces of the two half-frames (51) form the sealing groove (6).

5. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: The sealing element (1) and the sealing groove (6) are interference fit.

6. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: A plurality of first sealing ribs (7) are arranged circumferentially on the surface of the sealing element (1).

7. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: The sealing element (1) is provided with a liquid flow hole (8) and a liquid flow drainage channel (9) connected to the liquid flow hole (8).

8. The sealing assembly of a water electrolysis hydrogen production tank according to claim 7, characterized in that: A second sealing rib (10) is circumferentially arranged on the outer edges of the liquid flow hole (8) and the liquid flow guide channel (9).

9. The sealing assembly of a water electrolysis hydrogen production tank according to claim 1, characterized in that: The sealing member (1) is provided with an air flow hole (11) and an air flow channel (12) connected to the air flow hole (11).

10. The sealing assembly of a water electrolysis hydrogen production tank according to claim 9, characterized in that: A third sealing rib (13) is circumferentially arranged on the outer edges of the air hole (11) and the air hole drainage channel (12).

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