Sealing structure of water electrolysis hydrogen production equipment

Abstract

The utility model relates to the technical field of electrolytic baths, and particularly discloses a sealing structure of water electrolysis hydrogen production equipment, which comprises a plurality of bipolar plates and a plurality of diaphragms, the diaphragms and the bipolar plates are arranged in a staggered manner, and sealing gaskets are arranged between the diaphragms and the adjacent bipolar plates in an abutting manner. A first caulking groove and a second caulking groove are formed in the two end faces of the bipolar plate respectively, a first sealing ring is embedded in the first caulking groove, a second sealing ring is embedded in the second caulking groove, and the first sealing ring and the second sealing ring abut against the adjacent sealing gaskets respectively. The sealing ring is additionally arranged between the sealing gasket and the bipolar plate, so that the sealing performance between the bipolar plate and the sealing gasket can be effectively enhanced, and electrolyte leakage is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrolytic cell technical field especially relates to water electrolysis hydrogen production equipment sealing structure. BACKGROUND

[0002] The diaphragm of bipolar electrolytic cell is arranged between two bipolar plates, in order to ensure the sealing, the sealing gasket is arranged between the diaphragm and the bipolar plate, the modified polytetrafluoroethylene plane water line sealing is usually adopted, but the structure is usually affected by thermal expansion and cold shrinkage when the electrolytic cell fluctuates and starts, and the phenomenon of sealing leakage can be generated. SUMMARY

[0003] In order to solve the problems mentioned in the background art, the purpose of the utility model is to provide water electrolysis hydrogen production equipment sealing structure.

[0004] In order to realize the above-mentioned target, the technical scheme of the utility model is as follows:

[0005] Water electrolysis hydrogen production equipment sealing structure, including a plurality of bipolar plates and a plurality of diaphragms, a plurality of The diaphragm and a plurality of The bipolar plate are staggered, the sealing gasket is arranged between the diaphragm and the adjacent bipolar plate, the first embedding groove and the second embedding groove are respectively arranged on the two end surfaces of the bipolar plate, the first sealing ring is embedded in the first embedding groove, the second sealing ring is embedded in the second embedding groove, and the first sealing ring and the second sealing ring are respectively arranged on the adjacent sealing gasket.

[0006] Further, the first embedding groove and the second embedding groove are O-shaped grooves, and the first sealing ring and the second sealing ring are O-shaped sealing rings.

[0007] Further, the inner diameter of the first embedding groove is greater than the outer diameter of the second embedding groove.

[0008] The utility model has the advantages that: the composite sealing structure is adopted, the sealing ring is additionally arranged between the sealing gasket and the bipolar plate, the sealing performance between the bipolar plate and the sealing gasket can be effectively enhanced, and the electrolyte leakage is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is the structural schematic diagram of the utility model embodiment;

[0010] Figure 2 It is Figure 1 It is the schematic diagram of A.

[0011] The drawing number explanation is as follows: 1, bipolar plate, 11, first embedding groove, 12, second embedding groove, 2, diaphragm, 3, sealing gasket, 4, first sealing ring, 5, second sealing ring. DETAILED DESCRIPTION

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0013] like Figures 1-2 As shown, the sealing structure of the water electrolysis hydrogen production equipment includes several bipolar plates 1 and several diaphragms 2. The diaphragms 2 and the bipolar plates 1 are arranged alternately. A sealing gasket 3 is provided between the diaphragm 2 and the adjacent bipolar plate 1. The sealing gasket 3 is a modified polytetrafluoroethylene gasket with an inner diameter of 300 mm and an outer diameter of 500 mm. A first groove 11 and a second groove 12 are respectively opened on the two end faces of the bipolar plate 1. The first groove 11 and the second groove 12 are both O-shaped grooves. The outer diameter of the first groove 11 is 413 mm and the inner diameter is 405 mm. The outer diameter of the second groove 12 is 395 mm and the inner diameter is 387 mm. The depth of the first groove 11 and the second groove 12 is 3 mm. An O-shaped first sealing ring 4 is embedded in the first groove 11, and an O-shaped second sealing ring 5 is embedded in the second groove 12. The first sealing ring 4 and the second sealing ring 5 are respectively abutted against the adjacent sealing gasket 3.

[0014] The composite sealing structure is adopted, and a sealing ring is added between the sealing gasket 3 and the bipolar plate 1, which can effectively enhance the sealing performance between the bipolar plate 1 and the sealing gasket 3 and prevent electrolyte leakage. The first and second grooves 12 are staggered to ensure the strength of the bipolar plate 1.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for a water electrolysis hydrogen production device, comprising a plurality of bipolar plates (1) and a plurality of diaphragms (2), wherein the plurality of diaphragms (2) are alternately arranged with respect to the plurality of bipolar plates (1), and a sealing gasket (3) is provided between the diaphragm (2) and the adjacent bipolar plate (1), characterized in that, The bipolar plate (1) has a first groove (11) and a second groove (12) respectively on its two end faces. The first groove (11) is fitted with a first sealing ring (4), and the second groove (12) is fitted with a second sealing ring (5). The first sealing ring (4) and the second sealing ring (5) are respectively abutted against the adjacent sealing gasket (3).

2. The sealing structure of the water electrolysis hydrogen production equipment according to claim 1, characterized in that, The first groove (11) and the second groove (12) are both O-rings, and the first sealing ring (4) and the second sealing ring (5) are both O-rings.

3. The sealing structure of the water electrolysis hydrogen production equipment according to claim 2, characterized in that, The inner diameter of the first groove (11) is larger than the outer diameter of the second groove (12).

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