Electrolytic bath pole plate sealing structure

Abstract

The utility model relates to the technical field of electrolytic bath polar plate sealing, and particularly discloses an electrolytic bath polar plate sealing structure which comprises a polar plate I, a polar plate II, and a plurality of liquid inlet holes, air outlet holes, water inlet holes and hole side sealing flange groups which are respectively arranged on the polar plate I and the polar plate II, the first polar plate and the second polar plate are each provided with a hole side sealing flange set, each sealing flange set is provided with an outer sealing flange set, and each hole side sealing flange set is located between the corresponding inner sealing flange set and the corresponding outer sealing flange set. The outer sealing flange set, the hole side sealing flange set and the inner sealing flange set are all composed of a plurality of annular flanges which are arranged in a stepped mode. The polar plate prevents air leakage of the air outlet through the inner sealing flange group; liquid leakage of the liquid inlet hole and the water inlet hole is prevented through the hole side sealing flange group; air leakage and liquid leakage are prevented through the outer sealing flange group; according to the sealing structure, the electrolytic cell polar plate is subjected to multiple sealing through the stepped sealing flange groups, so that the sealing performance of the electrolytic cell polar plate is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic cell pole plate sealing, in particular to an electrolytic cell pole plate sealing structure. Background Art

[0002] The electrolyzer is the core of the water electrolysis hydrogen production equipment. It is generally composed of several to hundreds of electrolytic chambers connected in series. Each electrolytic chamber is composed of components such as plates, electrodes, diaphragms and sealing gaskets. Among them, the plates are the supporting components of the electrolyzer, which play the role of supporting electrodes and diaphragms and conducting electricity. The sealing structure on some existing plates needs to be further optimized.

[0003] A Chinese patent document CN204898091 U discloses a water electrolyzer sealing structure, including a plurality of stacked frames and plates, the plates are clamped between the frames, cavities are arranged along the edges of the plates, the plates extend into the cavities, and the cavities are formed by stacking annular grooves on the frames. The utility model has a simple structure and low production cost, but the sealing structure disclosed in the utility model is relatively simple and single, and it discloses that welding and sealing are performed at the stacking of the plate frames when necessary, which makes it inconvenient to disassemble and repair the equipment later, so its sealing structure needs to be improved.

[0004] Therefore, we provide an electrolytic cell plate sealing structure that does not require welding processing and is convenient for subsequent equipment disassembly and assembly and other operations; the electrolytic cell plate is multiple-sealed through a stepped layout of sealing flange groups, which effectively improves the sealing performance of the electrolytic cell plate. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, the utility model provides an electrolytic cell plate sealing structure, which does not require welding processing and is convenient for subsequent equipment disassembly and assembly and other operations; the electrolytic cell plate is multiple-sealed by a stepped layout of sealing flange groups, which effectively improves the sealing performance of the electrolytic cell plate.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] An electrolytic cell plate sealing structure comprises a first plate and a second plate, and a plurality of liquid inlet holes, gas outlet holes, and water inlet holes respectively arranged on the first plate and the second plate, wherein the first plate and the second plate are both provided with a hole side sealing flange group, an inner sealing flange group, and an outer sealing flange group, wherein the hole side sealing flange group is located between the inner sealing flange group and the outer sealing flange group;

[0008] The outer sealing flange group, the hole side sealing flange group, and the inner sealing flange group are all composed of multiple annular flanges arranged in a stepped manner; the inner sealing flange group is used to prevent air leakage from the air outlet of the pole plate 1; the hole side sealing flange group is used to prevent liquid leakage from the liquid inlet and the water inlet; and the outer sealing flange group is used to prevent air and liquid leakage from the pole plate 1.

[0009] First, matching sealing gaskets are placed on the outer sealing flange group, the hole side sealing flange group and the inner sealing flange group on one electrode plate, and then another electrode plate is stacked, so that the outer sealing flange group, the hole side sealing flange group and the inner sealing flange group on the two electrodes cooperate with each other, wherein the two first annular flanges of the outer sealing flange group conflict with each other and form a gap (this gap can be filled with sealant later according to usage requirements), the second annular flange and the third annular flange are close to each other to compress the sealing gasket, and form a first ring-shaped sealing cavity and a second ring-shaped sealing cavity, and the stepped layout of the sealing flange mechanism achieves multiple sealing effects, thereby effectively preventing gas leakage and liquid leakage in the electrolytic cell; as mentioned above, the hole side sealing flange group and the inner sealing flange group both adopt the same sealing structure and operation method as the outer sealing flange group, and the three achieve a good sealing effect on the electrode plates through the stepped layout of multiple sealing flanges, which effectively reduces the phenomenon of gas leakage and liquid leakage in the electrode plate of the electrolytic cell.

[0010] Furthermore, the outer sealing flange group includes a first annular flange, a second annular flange, and a third annular flange which are sequentially distributed in a stepped manner.

[0011] Furthermore, the first annular flange, the second annular flange and the third annular flange are evenly spaced from the outside to the inside on the first pole plate, the horizontal height of the first annular flange is higher than the height of the second annular flange, and the horizontal height of the second annular flange is higher than the height of the third annular flange.

[0012] Furthermore, when two of the electrode plates are stacked, adjacent first annular flanges collide with each other to form a gap. If necessary, the gap can be filled with sealant, and a sealing gasket is provided between adjacent second annular flanges and third annular flanges.

[0013] Furthermore, a first sealing cavity is formed between the sealing gasket and the first annular flange and the second annular flange, and a second sealing cavity is formed between the sealing gasket and the second annular flange and the third annular flange.

[0014] Furthermore, the liquid inlet and air outlet on the first electrode plate are circular in design, the liquid inlet and air outlet on the second electrode plate are waist-shaped in design, and the diameter of the diaphragm on the second electrode plate is greater than the diameter of the diaphragm on the first electrode plate.

[0015] Furthermore, the liquid inlet hole includes cathode liquid inlet hole 1 and cathode liquid inlet hole 2, and anode liquid inlet hole 1 and anode liquid inlet hole 2, the gas outlet hole includes hydrogen gas outlet hole and oxygen gas outlet hole, and the water inlet hole includes cooling water inlet hole and cooling water outlet hole.

[0016] The beneficial effects of the utility model are:

[0017] (1) The inner sealing flange group is provided to effectively prevent air leakage from the gas outlet of the plate; the hole side sealing flange group is provided to effectively prevent liquid leakage from the liquid inlet and water inlet of the plate; the outer sealing flange group is provided to perform secondary protective sealing on the gas outlet, liquid inlet and water inlet, effectively preventing gas and liquid leakage from occurring in the plate.

[0018] (2) By arranging the first annular flange, the second annular flange, and the third annular flange in a stepped layout, the first annular flanges of the two stacked plates contact each other and form a gap (this gap can be filled with sealant according to the use requirements to seal and protect the electrolytic cell), the second annular flange and the third annular flange are close to each other to compress the sealing gasket, and form a first ring-shaped sealing cavity and a second ring-shaped sealing cavity. The sealing flanges in the stepped layout achieve multiple sealing effects, thereby effectively preventing gas and liquid leakage from the electrolytic cell plates.

[0019] (3) By setting the air inlet, liquid inlet and water inlet holes on the electrode plate to be waist-shaped, compared with the traditional circular hole design, when the aperture flow rate of the waist-shaped hole design is the same as that of the circular hole, the electrode plate with the waist-shaped hole layout can be arranged with a larger diaphragm, thereby improving the reaction efficiency of the electrolytic cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0022] Figure 2 It is a front view of the first embodiment of the utility model;

[0023] Figure 3 This is a cross-sectional view of the first embodiment of the utility model;

[0024] Figure 4 For the utility model Figure 3 Enlarged view of point C in the middle;

[0025] Figure 5 This is a schematic diagram of the sealing line structure of the utility model;

[0026] Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present utility model;

[0027] Figure 7 The second front view is an embodiment of the present utility model;

[0028] Figure 8 It is a schematic diagram comparing the overall structures of the first embodiment and the second embodiment of the present utility model.

[0029] Description of main component symbols:

[0030] In the figure: 1, pole plate one; 2, cathode liquid inlet hole one; 201, cathode liquid inlet hole two; 3, hydrogen outlet hole; 4, oxygen outlet hole; 5, cooling water inlet hole; 501, cooling water outlet hole; 6, anode liquid inlet hole one; 601, anode liquid inlet hole two; 7, outer sealing flange group; 701, first annular flange; 7011, gap; 702, second annular flange; 7021, first sealed cavity; 703, third annular flange; 7031, second sealed cavity; 8, hole side sealing flange group; 9, inner sealing flange group; 10, pole plate two; 11, sealing gasket; 12, diaphragm. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects of the utility model are clearly and completely described below in combination with the accompanying drawings and preferred embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present application, it should be understood that the orientation or position relationship indicated by "inside" or "outside" etc. is based on the orientation or position described in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, a specific orientation structure and operation, and therefore cannot be understood as a limitation on the present application.

[0033] Embodiment 1:

[0034] Reference Figures 1 to 5 and Figure 8 , is an electrolytic cell plate sealing structure disclosed in the utility model, comprising a plate 1 and a plate 2 10, and a plurality of liquid inlet holes, gas outlet holes, and water inlet holes respectively arranged on the plate 1 and the plate 2 10, and a hole side sealing flange group 8, an inner sealing flange group 9, and an outer sealing flange group 7 are arranged on the plate 1 and the plate 2 10, and the hole side sealing flange group 8 is located between the inner sealing flange group 9 and the outer sealing flange group 7;

[0035] The outer sealing flange group 7, the hole side sealing flange group 8, and the inner sealing flange group 9 are all composed of multiple annular flanges arranged in a stepped manner; the inner sealing flange group 9 prevents the gas outlet of the pole plate 1 from leaking; the hole side sealing flange group 8 prevents the liquid inlet and water inlet from leaking; and the outer sealing flange group 7 prevents the gas and liquid leakage of the pole plate 1.

[0036] First, matching sealing gaskets 11 are placed on the outer sealing flange group 7, the hole side sealing flange group 8 and the inner sealing flange group 9 on one electrode plate 1, and then another electrode plate 1 is stacked, so that the outer sealing flange group 7, the hole side sealing flange group 8 and the inner sealing flange group 9 on the two electrodes cooperate with each other, wherein the two first annular flanges 701 of the outer sealing flange group 7 collide with each other and form a gap 7011 (this gap 7011 can be filled with sealant later according to the use requirements), and the second annular flange 702 and the third annular flange 703 The sealing gasket 11 is pressed close to each other to form a first ring-shaped sealing cavity 7021 and a second ring-shaped sealing cavity 7031. The stepped sealing flange mechanism achieves multiple sealing effects, thereby effectively preventing gas leakage and liquid leakage in the electrolytic cell. Similarly, the hole side sealing flange group 8 and the inner sealing flange group 9 both adopt the same sealing structure and operation method as the outer sealing flange group 7. The three have a good sealing effect on the electrode plate 1 through the multiple sealing flanges in the stepped layout, which effectively reduces the gas leakage and liquid leakage of the electrode plate 1 in the electrolytic cell.

[0037] See also Figures 3 to 5 The outer sealing flange group 7 includes a first annular flange 701, a second annular flange 702, and a third annular flange 703 which are arranged in a stepped manner. The first annular flange 701, the second annular flange 702, and the third annular flange 703 are evenly spaced from the outside to the inside on the pole plate 1. The horizontal height of the first annular flange 701 is higher than the height of the second annular flange 702, and the horizontal height of the second annular flange 702 is higher than the height of the third annular flange 703.

[0038] See also Figures 2 to 5 The two plates are stacked one by one, and the adjacent first annular flanges 701 collide to form a gap 7011. If necessary, the gap 7011 can be filled with sealant. A sealing gasket 11 is arranged between the adjacent second annular flange 702 and the third annular flange 703. A first sealing cavity 7021 is formed between the sealing gasket 11 and the first annular flange 701 and the second annular flange 702. A second sealing cavity 7031 is formed between the sealing gasket 11 and the second annular flange 702 and the third annular flange 703.

[0039] See also Figure 1The liquid inlet and gas outlet on the electrode plate 1 are circular in design. The liquid inlet includes cathode liquid inlet hole 1 2 and cathode liquid inlet hole 201, as well as anode liquid inlet hole 1 6 and anode liquid inlet hole 2 601. The gas outlet includes hydrogen gas outlet 3 and oxygen gas outlet 4. The water inlet includes cooling water inlet 5 and cooling water outlet 501.

[0040] Embodiment 2:

[0041] See also Figures 6 to 8 The liquid inlet and the gas outlet on the second plate 10 are designed in a waist shape, and the diameter of the diaphragm 12 on the second plate 10 is larger than the diameter of the diaphragm 12 on the first plate 1.

[0042] The difference between the second embodiment and the first embodiment is that the liquid inlet and the air outlet on the electrode plate 10 are designed in a waist shape, the diameter of the diaphragm 12 on the electrode plate 10 is larger than the diameter of the diaphragm 12 on the electrode plate 1, and the aperture flow rate of the waist-shaped liquid inlet and air outlet is the same as the aperture flow rate of the circular-shaped liquid inlet and air outlet in the first embodiment. Compared with the electrode plate 1, the electrode plate 10 of the second embodiment can be installed with a diaphragm 12 with a larger area, thereby improving the reaction efficiency of the electrolytic cell.

[0043] The working principle and use process of the utility model are as follows: first, matching sealing gaskets 11 are placed on the outer sealing flange group 7, the hole side sealing flange group 8 and the inner sealing flange group 9 on one electrode plate 1, and then another electrode plate 1 is stacked, so that the outer sealing flange group 7, the hole side sealing flange group 8 and the inner sealing flange group 9 on the two electrodes cooperate with each other, wherein the two first annular flanges 701 of the outer sealing flange group 7 collide with each other and form a gap 7011 (this gap 7011 can be filled with sealant later according to the use requirements), and the second annular flange 702 and the first annular flange 703 are respectively placed on the outer sealing flange group 7, and the second annular flange 704 and the second annular flange 705 are respectively placed on the outer sealing flange group 7, and the second annular flange 706 and the second annular flange 707 are respectively placed on the outer sealing flange group 7, and the second annular flange 707 and the second annular flange 708 are respectively placed on the outer sealing flange group 7, and the second annular flange 709 and the second annular flange 701 are respectively placed on the outer sealing flange group 7, and the second annular flange 701 and the second annular flange 702 are respectively placed on the outer sealing flange group 7, and the second annular flange 703 and the second annular flange 704 are respectively placed on the outer sealing flange group 7, and the second annular flange 705 and the second annular flange 706 are respectively placed on the outer sealing flange group 7, and the second annular flange 706 and the second annular flange 707 are respectively placed on the outer sealing flange group 7, and the second annular flange 708 and the second annular flange 709 are respectively placed on the outer sealing flange group 7, and the second annular flange 709 The three annular flanges 703 are close to each other to compress the sealing gasket 11, and form a first ring-shaped sealing cavity 7021 and a second ring-shaped sealing cavity 7031. The stepped layout of the sealing flange mechanism achieves multiple sealing effects, thereby effectively preventing gas leakage and liquid leakage in the electrolytic cell. Similarly, the hole side sealing flange group 8 and the inner sealing flange group 9 both adopt the same sealing structure and operation method as the outer sealing flange group 7. The three have a good sealing effect on the electrode plate 1 through the multiple sealing flanges in the stepped layout, which effectively reduces the gas leakage and liquid leakage of the electrode plate 1 in the electrolytic cell.

[0044] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electrolytic cell plate sealing structure, comprising a first plate (1) and a second plate (10), and a plurality of liquid inlet holes, gas outlet holes, and water inlet holes respectively arranged on the first plate (1) and the second plate (10), characterized in that: The electrode plate 1 (1) and the electrode plate 2 (10) are both provided with a hole side sealing flange group (8), an inner sealing flange group (9) and an outer sealing flange group (7), and the hole side sealing flange group (8) is located between the inner sealing flange group (9) and the outer sealing flange group (7); The outer sealing flange group (7), the hole side sealing flange group (8), and the inner sealing flange group (9) are all composed of a plurality of annular flanges arranged in a stepped manner; the inner sealing flange group (9) prevents the gas outlet of the pole plate 1 (1) from leaking; the hole side sealing flange group (8) prevents the liquid inlet and the water inlet from leaking; and the outer sealing flange group (7) prevents the gas and liquid leakage of the pole plate 1 (1).

2. The electrolytic cell plate sealing structure according to claim 1, characterized in that: The outer sealing flange group (7) comprises a first annular flange (701), a second annular flange (702), and a third annular flange (703) which are sequentially distributed in a stepped manner.

3. The electrolytic cell plate sealing structure according to claim 2, characterized in that: The first annular flange (701), the second annular flange (702), and the third annular flange (703) are evenly spaced from the outside to the inside on the pole plate (1); the horizontal height of the first annular flange (701) is higher than the height of the second annular flange (702), and the horizontal height of the second annular flange (702) is higher than the height of the third annular flange (703).

4. The electrolytic cell plate sealing structure according to claim 2, characterized in that: Two of the pole plates (1) are stacked, and adjacent first annular flanges (701) collide to form a gap (7011), and a sealing gasket (11) is provided between adjacent second annular flanges (702) and third annular flanges (703).

5. The electrolytic cell plate sealing structure according to claim 4, characterized in that: A first sealing cavity (7021) is formed between the sealing gasket (11) and the first annular flange (701) and the second annular flange (702), and a second sealing cavity (7031) is formed between the sealing gasket (11) and the second annular flange (702) and the third annular flange (703).

6. The electrolytic cell plate sealing structure according to claim 1, characterized in that: The liquid inlet and the gas outlet on the first electrode (1) are designed to be circular, the liquid inlet and the gas outlet on the second electrode (10) are designed to be waist-shaped, and the diameter of the diaphragm (12) on the second electrode (10) is greater than the diameter of the diaphragm (12) on the first electrode (1).

7. The electrolytic cell plate sealing structure according to claim 1, characterized in that: The liquid inlet hole comprises cathode liquid inlet hole 1 (2) and cathode liquid inlet hole 2 (201), and anode liquid inlet hole 1 (6) and anode liquid inlet hole 2 (601); the gas outlet hole comprises hydrogen gas outlet hole (3) and oxygen gas outlet hole (4); and the water inlet hole comprises cooling water inlet hole (5) and cooling water outlet hole (501).

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