Hydrogen production electrolytic cell polar plate, hydrogen production electrolytic cell and hydrogen production system

Abstract

The utility model discloses a hydrogen production electrolytic bath pole plate, a hydrogen production electrolytic bath and a hydrogen production system.The hydrogen production electrolytic bath pole plate comprises a pole plate body and annular sealing washers, and annular sealing grooves of symmetrical structures are formed in the two end faces of the pole plate body; the number of the annular sealing gaskets is two, the annular sealing gaskets are installed in the annular sealing grooves in the two end faces of the polar plate body respectively, and the thickness of the annular sealing gaskets is larger than the depth of the sealing grooves. Compared with the prior art, the polar plate of the hydrogen production electrolytic tank has the following technical advantages: 1) a convex part in a polar plate with a concave-convex structure in the prior art is removed, and a flat plate design mode is adopted, so that the weight of the polar plate is greatly reduced; 2) the mode of installing the annular sealing gasket on the flat plate type polar plate can reduce processing procedures and save manufacturing cost, and 3) the risk of extrusion damage to a system diaphragm is reduced, and the stability and efficiency of system operation are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydrogen production, and in particular relates to a hydrogen production electrolyzer plate, a hydrogen production electrolyzer and a hydrogen production system. Background Art

[0002] The alkaline water electrolysis hydrogen production electrolyzer is a filter press structure with a cylindrical shape. It is mainly composed of end pressure plates on both sides, plate assemblies, sealing gaskets, diaphragms and other components tightened and fastened by multiple large tie rod threads. The sealing gaskets and diaphragms are sandwiched between two adjacent plate assemblies to form an electrolysis chamber. The entire electrolysis cell consists of hundreds of electrolysis chambers.

[0003] The plate structure of alkaline water hydrogen production electrolyzers generally adopts a uniformly concave and convex plate structure. The plate manufacturing process is complex and the manufacturing cost is high. Secondly, during assembly, the electrolyzer needs to be assembled vertically and then turned over to a horizontal position. Due to its heavy weight, assembly is difficult. If there is an error in the assembly, the distance between the plates will increase, resulting in increased resistance. Alternatively, during the electrolyzer compression process, the protrusions on the plates will cause damage to the diaphragm, which will affect the stability and efficiency of the equipment operation.

[0004] Therefore, how to reduce the weight of the plate, reduce the processing steps, save manufacturing costs, and improve the stability and efficiency of equipment operation are technical problems that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a hydrogen production electrolyzer plate, which can reduce the weight of the plate, reduce the processing steps, save manufacturing costs, and improve the stability and efficiency of equipment operation.

[0006] Another object of the present invention is to provide a hydrogen production electrolyzer.

[0007] Yet another object of the present invention is to provide a hydrogen production system.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] A hydrogen production electrolyzer plate comprises a plate body and an annular sealing gasket, wherein both end surfaces of the plate body are provided with annular sealing grooves of symmetrical structure;

[0010] There are two annular sealing gaskets, which are respectively installed in annular sealing grooves located on both end surfaces of the electrode body, and the thickness of the annular sealing gaskets is greater than the depth of the sealing grooves.

[0011] Optionally, a first medium inlet and a first medium outlet are provided on the electrode plate body, and there are two annular sealing grooves on any end surface of the electrode plate body, and the two annular sealing grooves are respectively provided on both sides of the first medium inlet and the first medium outlet.

[0012] Optionally, the first medium inlet includes a first positive medium inlet and a first negative medium inlet, the first positive medium inlet is connected to the positive electrode area of ​​the first electrolysis chamber through a first positive medium flow channel, one side of the first negative medium inlet is connected to the negative electrode area of ​​the first electrolysis chamber, and the other side is connected to the negative electrode area of ​​the second electrolysis chamber through the first negative medium flow channel, and the first electrolysis chamber and the second electrolysis chamber are arranged adjacent to each other.

[0013] Optionally, the first medium outlet includes a first positive electrode oxygen outlet and a first negative electrode hydrogen outlet, the first positive electrode oxygen outlet is connected to the positive electrode region of the first electrolysis chamber through a first positive electrode oxygen flow channel, one side of the first negative electrode hydrogen outlet is connected to the negative electrode region of the first electrolysis chamber, and the other side is connected to the negative electrode region of the second electrolysis chamber through a first negative electrode hydrogen flow channel.

[0014] Optionally, a medium flow channel is provided on the annular sealing gasket, and the medium flow channel is provided on the end surface of the annular sealing gasket.

[0015] Optionally, the medium flow channel includes a second positive medium flow channel and a second negative medium flow channel, the second positive medium flow channel is connected to the first positive medium inlet, and the second negative medium flow channel is connected to the first negative medium inlet.

[0016] Optionally, the medium flow channel further includes a second positive electrode oxygen flow channel and a second negative electrode hydrogen flow channel, the second positive electrode oxygen flow channel is connected to the first positive electrode oxygen outlet, and the second negative electrode hydrogen flow channel is connected to the first negative electrode hydrogen outlet.

[0017] Optionally, the thickness of the annular sealing gasket is between 3 mm and 6 mm.

[0018] A hydrogen production electrolyzer comprises the hydrogen production electrolyzer plate as described above, and further comprises an electrode, a gasket and a diaphragm. The hydrogen production electrolyzer plate, the electrode, the gasket and the diaphragm are tightened and fastened by a plurality of tie rod threads.

[0019] A hydrogen production system includes the hydrogen production electrolyzer as described above.

[0020] Compared with the prior art, the hydrogen production electrolyzer plate disclosed in the embodiment of the present invention has the following technical advantages:

[0021] 1) The convex part of the plate with a concave-convex structure in the prior art is removed and a flat plate design is adopted, which greatly reduces the weight of the plate;

[0022] 2) Installing the annular sealing gasket on the flat plate can reduce processing steps and save manufacturing costs;

[0023] 3) Reduce the risk of extrusion damage to the system diaphragm and improve the stability and efficiency of system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0025] Figure 1 It is an isometric view of an assembly of a hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0026] Figure 2 This is a front view of an assembly of a hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0027] Figure 3 This is a left side cross-sectional view of an assembly of a hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0028] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 This is a rear view of the assembly of the hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0030] Figure 6 This is an isometric view of the positive end of a plate of a hydrogen production electrolyzer provided by an embodiment of the present invention;

[0031] Figure 7 This is an isometric view of the negative end of the electrode plate of the hydrogen production electrolyzer provided by an embodiment of the present utility model;

[0032] Figure 8 It is a left side cross-sectional view of the electrode plate of the hydrogen production electrolyzer provided by an embodiment of the present utility model.

[0033] Figure 9 for Figure 8 Enlarged view of point B in the middle;

[0034] Figure 10This is an isometric view of the annular sealing gasket plate side of the hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0035] Figure 11 This is an isometric view of the sealing groove side of the annular sealing gasket of the hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0036] Figure 12 This is a left side sectional view of an annular sealing gasket of a hydrogen production electrolyzer plate provided by an embodiment of the present utility model;

[0037] Figure 13 for Figure 12 Enlarged view of point C in the middle.

[0038] Description of reference numerals:

[0039] 100, electrode plate body; 101, annular sealing groove; 102, first medium inlet; 1021, first positive medium inlet; 1022, first negative medium inlet; 103, first medium outlet; 1031, first positive oxygen outlet; 1032, first negative hydrogen outlet; 104, first positive medium flow channel; 105, first positive oxygen flow channel; 106, first negative hydrogen flow channel; 107, first negative medium flow channel; 200, annular sealing gasket; 201, medium flow channel; 2011, second positive medium flow channel; 2012, second negative medium flow channel; 2013, second positive oxygen flow channel; 2014, second negative hydrogen flow channel. DETAILED DESCRIPTION

[0040] In view of this, the core of the present invention is to provide a hydrogen production electrolyzer plate, which can reduce the weight of the plate, reduce processing steps, save manufacturing costs, and improve the stability and efficiency of equipment operation.

[0041] Another core of the present invention is to provide a hydrogen production electrolyzer.

[0042] Another core of the present invention is to provide a hydrogen production system.

[0043] 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 embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Please refer to Figures 1-13 .

[0044] Please refer to Figures 1-4The hydrogen production electrolyzer electrode plate disclosed in the embodiment of the present utility model includes an electrode plate body 100 and an annular sealing gasket 200, wherein both end surfaces of the electrode plate body 100 are provided with annular sealing grooves 101 of symmetrical structure, and there are two annular sealing gaskets 200, which are respectively installed in the annular sealing grooves 101 located on the two end surfaces of the electrode plate body 100, and the thickness of the annular sealing gaskets 200 is greater than the depth of the annular sealing grooves.

[0045] Compared with the prior art, the hydrogen production electrolyzer plate disclosed in the embodiment of the present invention has the following technical advantages:

[0046] 1) The convex part of the plate with a concave-convex structure in the prior art is removed and a flat plate design is adopted, which greatly reduces the weight of the plate;

[0047] 2) The method of installing the annular sealing gasket 200 on the flat plate can reduce the processing steps and save manufacturing costs;

[0048] 3) Reduce the risk of extrusion damage to the system diaphragm and improve the stability and efficiency of system operation.

[0049] The embodiment of the present invention does not limit the specific structure of the electrode body 100. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0050] Please refer to Figure 2 The plate body 100 disclosed in the embodiment of the present invention is provided with a first medium inlet 102 and a first medium outlet 103. Two annular sealing grooves 101 are provided on either end surface of the plate body 100, and the two annular sealing grooves 101 are provided on either side of the first medium inlet 102 and the first medium outlet 103. In other words, one annular sealing groove 101 is provided near the center of the plate body 100, and the other annular sealing groove 101 is provided near the edge of the plate body 100, with the first medium inlet 102 and the first medium outlet 103 sandwiched between the two annular sealing grooves 101.

[0051] The embodiment of the present invention does not limit the specific configuration of the first medium inlet 102. As long as the structure meets the use requirements of the present invention, it falls within the protection scope of the present invention.

[0052] As an example, please refer to Figure 6-Figure 9The first medium inlet 102 disclosed in the embodiment of the present invention includes a first positive medium inlet 1021 and a first negative medium inlet 1022. The first positive medium inlet 1021 is connected to the positive electrode area of ​​the first electrolytic chamber through the first positive medium flow channel 104. One side of the first negative medium inlet 1022 is connected to the negative electrode area of ​​the first electrolytic chamber, and the other side is connected to the negative electrode area of ​​the second electrolytic chamber through the first negative medium flow channel 107. The first electrolytic chamber and the second electrolytic chamber are arranged adjacent to each other.

[0053] The embodiment of the present invention does not limit the specific configuration of the first medium outlet 103. As long as the structure meets the use requirements of the present invention, it falls within the protection scope of the present invention.

[0054] As an example, please refer to Figure 6-Figure 9 The first medium outlet 103 disclosed in the embodiment of the present invention includes a first positive electrode oxygen outlet 1031 and a first negative electrode hydrogen outlet 1032. The first positive electrode oxygen outlet 1031 is connected to the positive electrode area of ​​the first electrolysis chamber through the first positive electrode oxygen flow channel 105. One side of the first negative electrode hydrogen outlet 1032 is connected to the negative electrode area of ​​the first electrolysis chamber, and the other side is connected to the negative electrode area of ​​the second electrolysis chamber through the first negative electrode hydrogen flow channel 106.

[0055] The embodiment of the present invention does not limit the specific structure of the annular sealing gasket 200. As long as the structure meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0056] As one embodiment, the annular sealing gasket 200 disclosed in the embodiment of the present invention is provided with a medium flow channel 201 , wherein the medium flow channel 201 is provided on the end surface of the annular sealing gasket 200 .

[0057] As a further embodiment, the medium flow channel 201 disclosed in the embodiment of the present invention includes a second positive medium flow channel 2011 and a second negative medium flow channel 2012 , the second positive medium flow channel 2011 is connected to the first positive medium inlet 1021 , and the second negative medium flow channel 2012 is connected to the first negative medium inlet 1022 .

[0058] As a further example, please refer to Figure 10-13 The medium flow channel 201 disclosed in the embodiment of the present invention also includes a second positive electrode oxygen flow channel 2013 and a second negative electrode hydrogen flow channel 2014. The second positive electrode oxygen flow channel 2013 is connected to the first positive electrode oxygen outlet 1031, and the second negative electrode hydrogen flow channel 2014 is connected to the first negative electrode hydrogen outlet 1032.

[0059] The alkaline solution enters the first positive electrode medium flow channel 104 and the second positive electrode medium flow channel 2011 in sequence from the first positive electrode medium inlet 1021 of the electrode plate body 100. The oxygen generated after the reaction flows out from the first positive electrode oxygen outlet 1031, the first positive electrode oxygen flow channel 105, and the second positive electrode hydrogen flow channel 2014 in sequence. At the same time, the alkaline solution enters the first negative electrode medium flow channel 107 and the second negative electrode medium flow channel 2012 in sequence from the first negative electrode medium inlet 1022 of the electrode plate body 100. The hydrogen generated after the reaction flows out from the first negative electrode hydrogen outlet 1032, the first negative electrode hydrogen flow channel 106, and the second negative electrode hydrogen flow channel 2014 in sequence.

[0060] The embodiment of the present invention does not limit the specific thickness of the annular sealing gasket 200. As long as the height meets the use requirements of the present invention, it is within the protection scope of the present invention.

[0061] As a preferred embodiment, the thickness of the annular sealing gasket 200 disclosed in the embodiment of the present utility model is between 3 mm and 6 mm.

[0062] An embodiment of the present utility model further discloses a hydrogen-producing electrolyzer, comprising the hydrogen-producing electrolyzer plate disclosed in any one of the above embodiments, and further comprising an electrode, a gasket and a diaphragm, wherein the hydrogen-producing electrolyzer plate, the electrode, the gasket and the diaphragm are tightened and fastened by a plurality of tie rod threads.

[0063] Since the hydrogen-producing electrolyzer adopts the hydrogen-producing electrolyzer plate disclosed in the above embodiment, the hydrogen-producing electrolyzer has the technical advantages of the hydrogen-producing electrolyzer plate disclosed in the embodiment of the present utility model, and the embodiment of the present utility model will not describe them one by one.

[0064] An embodiment of the present utility model further discloses a hydrogen production system, comprising the hydrogen production electrolyzer disclosed in any one of the above embodiments.

[0065] Since the hydrogen production system adopts the hydrogen production electrolyzer disclosed in the above embodiment, the hydrogen production system has the technical advantages of the hydrogen production electrolyzer disclosed in the embodiment of the present utility model, and the embodiment of the present utility model will not be described in detail.

[0066] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen production electrolyzer plate, characterized in that: It includes a plate body and an annular sealing gasket, and both end surfaces of the plate body are provided with annular sealing grooves with symmetrical structures; There are two annular sealing gaskets, which are respectively installed in annular sealing grooves located on both end surfaces of the electrode body, and the thickness of the annular sealing gaskets is greater than the depth of the sealing grooves.

2. The hydrogen production electrolyzer plate according to claim 1, characterized in that: The plate body is provided with a first medium inlet and a first medium outlet. There are two annular sealing grooves on any end surface of the plate body, and the two annular sealing grooves are respectively provided on both sides of the first medium inlet and the first medium outlet.

3. The hydrogen production electrolyzer plate according to claim 2, characterized in that: The first medium inlet includes a first positive medium inlet and a first negative medium inlet. The first positive medium inlet is connected to the positive electrode area of ​​the first electrolysis chamber through a first positive medium flow channel. One side of the first negative medium inlet is connected to the negative electrode area of ​​the first electrolysis chamber, and the other side is connected to the negative electrode area of ​​the second electrolysis chamber through the first negative medium flow channel. The first electrolysis chamber and the second electrolysis chamber are arranged adjacent to each other.

4. The hydrogen production electrolyzer plate according to claim 3, characterized in that: The first medium outlet includes a first positive electrode oxygen outlet and a first negative electrode hydrogen outlet, the first positive electrode oxygen outlet is connected to the positive electrode area of ​​the first electrolysis chamber through a first positive electrode oxygen flow channel, one side of the first negative electrode hydrogen outlet is connected to the negative electrode area of ​​the first electrolysis chamber, and the other side is connected to the negative electrode area of ​​the second electrolysis chamber through a first negative electrode hydrogen flow channel.

5. The hydrogen production electrolyzer plate according to claim 4, characterized in that: The annular sealing gasket is provided with a medium flow channel, and the medium flow channel is provided on the end surface of the annular sealing gasket.

6. The hydrogen production electrolyzer electrode plate according to claim 5, characterized in that: The medium flow channel includes a second positive medium flow channel and a second negative medium flow channel, the second positive medium flow channel is connected to the first positive medium inlet, and the second negative medium flow channel is connected to the first negative medium inlet.

7. The hydrogen production electrolyzer plate according to claim 5, characterized in that: The medium flow channel further includes a second positive electrode oxygen flow channel and a second negative electrode hydrogen flow channel, wherein the second positive electrode oxygen flow channel is connected to the first positive electrode oxygen outlet, and the second negative electrode hydrogen flow channel is connected to the first negative electrode hydrogen outlet.

8. The hydrogen production electrolyzer electrode plate according to claim 1, characterized in that: The thickness of the annular sealing gasket is between 3mm and 6mm.

9. A hydrogen production electrolyzer, characterized in that: The hydrogen production electrolyzer plate comprises the hydrogen production electrolyzer plate according to any one of claims 1 to 8, and further comprises an electrode, a gasket and a diaphragm, wherein the hydrogen production electrolyzer plate, the electrode, the gasket and the diaphragm are tightened and fastened by a plurality of tie rod threads.

10. A hydrogen production system, characterized in that: Comprising the hydrogen production electrolyzer as claimed in claim 9.

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