Supporting net with fish scale plate net structure and water electrolysis hydrogen production device comprising supporting net

Abstract

The utility model discloses a support net with a fish scale plate net structure and a water electrolysis hydrogen production device comprising the same, a support net body is a fish scale plate net (1), the fish scale plate net (1) comprises a plurality of fish scale net hole rows arranged in a stepped manner, and each fish scale net hole row comprises a plurality of fish scale net holes (2). The structure of the supporting net of the electrolytic cell is changed, the contact sites of the fish scale plate net and the electrodes can be increased, an electrolysis cell flow field is formed, the supporting structure and the electrodes are multiple in contact, the conductivity is good, and the transverse shunting capacity is high. Furthermore, a flow guide opening (3) is formed in the fish scale plate net, so that the flowability of the electrolyte in the small electrolysis chamber is improved, bubble gathering is reduced, discharge of electrolysis bubbles is promoted, the uniformity of a flow field of the small electrolysis chamber is improved, and the energy efficiency of the electrolysis cell is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hydrogen production equipment of electrolytic water, specifically relates to a kind of support net for hydrogen production of electrolytic water and the hydrogen production device of electrolytic water comprising it. BACKGROUND

[0002] Hydrogen energy is an important component of future national energy structure, and electrolytic water hydrogen production is a key technology for the development of hydrogen energy industry. With the development of electrolytic cell towards high power and high current density, the diameter of electrolytic cell continuously expands, and the gas production per unit area of electrolytic cell continuously increases. The uniform supply of electrolyte on the surface of electrode and the smooth discharge of electrolytic product gas become a problem, which exacerbates the concentration polarization and activation polarization in the electrolytic cell, resulting in increased electrolysis energy consumption.

[0003] To promote the uniform distribution of electrolyte in the electrolytic cell, a convex is often used as the conductive and shunt structure of the electrolytic cell. However, this support structure has few electrode contacts, poor conductivity, and poor horizontal shunt capability. Therefore, there is an urgent need for a support structure with many electrode contacts, good conductivity, strong horizontal shunt capability, and low vortex speed in the backflow area to improve the uniformity of the electrolytic cell flow field, thereby improving the electrolysis efficiency of the electrolytic cell and reducing the electrolysis energy consumption.

[0004] To solve the above problems, the utility model is proposed. UTILITY MODEL CONTENT

[0005] To solve the above problems, the utility model changes the structure of the electrolytic cell support net, and uses a fish scale plate net to increase the contact points with the electrode and form an electrolytic cell flow field. This support structure has many electrode contacts, good conductivity, and strong horizontal shunt capability. Further, the utility model provides a flow guide opening on the upstream surface of the fish scale net hole enclosure surface facing the electrolyte flow direction in the fish scale plate net, which increases the flowability of the electrolyte in the electrolytic cell, reduces bubble aggregation, promotes the discharge of electrolytic bubbles, improves the uniformity of the electrolytic cell flow field, and further improves the energy efficiency of the electrolytic cell.

[0006] The utility model provides a novel support net with fish scale plate net structure in the first aspect, and the support net body is fish scale plate net 1, the fish scale plate net 1 includes multiple rows of fish scale net hole rows that can promote the diffusion of electrolyte in electrolytic cell and are arranged in a stepped manner, and each fish scale net hole row includes multiple fish scale net holes 2.

[0007] Preferably, the upstream surface of each fish scale net hole 2 facing the electrolyte flow direction in the enclosure surface is provided with one or more flow guide openings 3 to guide fluid to the backflow surface.

[0008] Preferably, the upstream surface of each fish scale net hole 2 facing the electrolyte flow direction in the enclosure surface is provided with one or more flow guide openings 3 to guide fluid to the backflow surface.

[0009] Preferably, the fish scale meshes 2 in two adjacent rows of the fish scale mesh rows are staggered.

[0010] Preferably, the fish scale plate net 1 is made by a stamping process.

[0011] The utility model discloses a second aspect provides a kind of electrolytic water hydrogen production device comprising the novel support net with the fish scale plate net structure described in the utility model first aspect.

[0012] Compared with prior art, the utility model has the following beneficial effects:

[0013] 1, the support net of the utility model has fish scale plate net structure, fish scale plate net can increase and form electrolytic cell flow field with the contact site of electrode, fish scale plate net is used as the conductive and shunt structure of electrolytic cell, and this kind of support structure is more with electrode contact point, and electric conductivity is good, and transverse shunt capacity is strong.

[0014] 2, the support net of the utility model is provided with flow guide hole in the flow surface of each fish scale mesh enclosure surface that faces electrolyte flow direction, and the vortex low speed area of backflow surface of fish scale mesh can be reduced by setting flow guide hole, avoid the area flow velocity low, reduce the aggregation of bubble, promote bubble discharge, more conducive to electrolyte supplement and bubble discharge, improve the uniformity of electrolytic cell flow field, and then improve electrolytic tank energy efficiency, greatly improve the electrolytic efficiency of electrode. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the support net structure schematic view of the utility model;

[0016] Figure 2 It is the electrolyte flow direction schematic view of the utility model;

[0017] Figure 3 It is the fish scale opening structure schematic view of the utility model;

[0018] Figure 4 It is the electrolyte velocity flow line nephogram of fish scale structure when not opening of the utility model;

[0019] Figure 5 It is the electrolyte velocity flow line nephogram of fish scale structure after opening of the utility model;

[0020] The name of reference signs in brief description of drawings: 1, fish scale plate net; 2, fish scale mesh; 3, flow guide hole; DETAILED DESCRIPTION

[0021] The utility model is further described in detail in connection with examples.

[0022] Those skilled in the art will understand that the following examples are only used to illustrate the present application, and should not be regarded as limiting the scope of the present application. If the specific technology or condition is not specified in the examples, it is carried out according to the technology or condition described in the literature in the art or according to the product manual. If the manufacturer of the material or equipment is not specified, it is a conventional product that can be obtained by purchase.

[0023] Those skilled in the art will understand that the singular forms "a," "an," and "the" include plural referents unless expressly stated otherwise. It should further be understood that the word "comprising" as used in the specification herein is used to mean the presence of steps, integers, operations, elements, and / or components, but not to the exclusion of one or more other steps, integers, operations, elements, components, and / or groups thereof that are present or added.

[0024] In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more. The orientation or positional relationship indicated by the terms "inner", "upper", "lower", and the like is based on the orientation or positional relationship shown in the drawings, and is only for the purpose of facilitating the description of the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "provided with" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application should be understood according to the specific circumstances.

[0026] Those skilled in the art will understand that, unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as generally understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless otherwise defined.

[0027] Examples

[0028] As Figures 1-3The embodiment is a support net with fish scale net structure for a hydrogen production device by electrolysis of water, which comprises a fish scale net 1, the fish scale net 1 comprises a plurality of rows of fish scale mesh rows which can promote diffusion of electrolyte in an electrolysis cell and are arranged in a stepped manner, and each row of the fish scale mesh rows comprises a plurality of fish scale meshes 2. The fish scale net can increase the contact sites with the electrode, form an electrolysis cell flow field with good conductivity and strong transverse shunt capacity.

[0029] The fish scale mesh 2 is provided with a flow guide opening 3 on the flow surface facing the flow direction of the electrolyte. In the embodiment, the size of the flow guide opening 3 can be adjusted according to the thickness of the fish scale net 1 and the size of the fish scale mesh 2, and a plurality of flow guide openings 3 can be arranged on the flow surface of the enclosed surface of each fish scale mesh 2. The electrolyte can enter the back flow surface of the fish scale mesh through the flow guide opening 3.

[0030] The fish scale meshes 2 in the two adjacent rows of fish scale mesh rows are staggered. Here, the staggered arrangement means that the fish scale mesh 2 in the next row of fish scale mesh rows is located between two adjacent fish scale meshes 2 in the previous row of fish scale mesh rows.

[0031] The fish scale net 1 is made by a stamping process.

[0032] From Figure 4 The electrolyte velocity streamline cloud diagram of the fish scale structure without opening (without flow guide opening 3) can be obtained, the back flow surface of the fish scale mesh forms obvious vortex and the flow velocity here is close to 0, which greatly affects the uniformity of the flow field and greatly reduces the electrolysis efficiency of the electrode. From Figure 5 The electrolyte velocity streamline cloud diagram of the fish scale structure with opening (with flow guide opening 3) can be obtained, by arranging the flow guide opening 3, the back flow surface of the fish scale mesh can reduce the vortex low speed area, the electrolyte is supplemented, the back flow surface flow velocity is increased, the flow field flow velocity in the cell tends to be uniform, and the gas bubble aggregation is also reduced, the overall uniformity of the electrolysis cell flow field is improved, the ohmic resistance is reduced, so that the energy consumption of the electrolysis cell is reduced.

Claims

1. A support net having a fish scale net structure, characterized by, The support net body is a fish scale plate net (1), which comprises a plurality of rows of fish scale mesh rows arranged in a stepped manner, and each row of the fish scale mesh rows comprises a plurality of fish scale meshes (2); Each of the fish scale meshes (2) is provided with one or more flow guide openings (3) on the flow-approaching surface of the enclosed surface thereof facing the flow direction of the electrolyte.

2. The support net having a fish scale net structure according to claim 1, characterized by, Each of the fish scale meshes (2) is provided with one or more flow guide openings (3) on the flow-approaching surface of the enclosed surface thereof facing the flow direction of the electrolyte.

3. The support net having a fish scale net structure according to claim 1, wherein, The fish scale meshes (2) in the fish scale mesh rows in two adjacent rows are arranged in a staggered manner.

4. The support net having a fish scale net structure according to claim 1, wherein, The fish scale plate net (1) is made by a stamping process.

5. A hydrogen production apparatus for electrolysis of water, characterized by, A battery comprising the support net with the fish scale plate net structure according to any one of claims 1-4.

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