CN216998609U - Electrode unit of guide wedge-shaped structure and electrolysis unit comprising same - Google Patents

Abstract

The utility model provides an electrode unit with a guide wedge-shaped structure and an electrolysis unit comprising the electrode unit, wherein the electrode unit with the guide wedge-shaped structure comprises: an electrode frame and an electrode plate; an electrode plate is arranged in the electrode frame, and the electrode plate and the electrode frame form a liquid storage cavity; the electrode frame is provided with a liquid inlet flow passage and a gas-liquid outlet flow passage which are communicated with the liquid storage cavity; a plurality of wedge-shaped units which are arranged in a concave-convex mode are arranged on the surface, located in the liquid storage cavity, of the electrode plate at intervals; the wedge-shaped units are uniformly distributed, and each wedge-shaped unit is arranged at an acute angle with the flowing direction of the liquid flowing through the electrode plate. According to the electrode unit with the guide wedge-shaped structure, due to the fact that the wedge-shaped structure units are arranged in the concave-convex mode, the staying time of bubbles in the chamber can be shortened, the mass transfer process of hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.

Description

Electrode unit of guide wedge-shaped structure and electrolysis unit comprising same

Technical Field

The utility model belongs to the technical field of hydrogen production by electrolyzing water, and particularly relates to an electrode unit with a guide wedge-shaped structure and an electrolysis unit comprising the electrode unit.

Background

The hydrogen energy is a novel clean energy, only water is generated in the utilization process of the hydrogen energy, and pollutants and carbon dioxide emission are avoided. Therefore, the development of hydrogen energy technology is imperative at present under the great development of clean energy and the large historical background of 'carbon peak reaching' and 'carbon neutralization'. Currently, hydrogen production by electrolysis of water is the most common and only commercially viable method of hydrogen production on a large scale. The structure of the electrolytic cell determines the flow distribution of the electrolyte, and has important influence on the efficiency of the hydrogen production process by electrolysis. The main electrode plate surface inside the electrolysis unit (cell) of the filter-press type electrolysis cell which is commercially used at present mostly adopts a structure (a convex structure) with alternate concave and convex, as shown in figure 1. The structure is designed initially, on one hand, the polar plates on two sides can form multi-point contact in a top-to-top mode; on the other hand, the disturbance degree of the flow is increased, the concentration difference of electrolyte at each position in the flow channel is reduced, and the electrolyte is distributed more uniformly. However, in practical application, the electrode plate with the mastoid structure has the following disadvantages:

1. when the alkali liquor flows in the small chamber, the concave-convex structure can generate flow vertical to the electrode plate, but the transverse flow is lacked, so that the alkali liquor is unevenly distributed in the radial direction of the electrode plate, and the uneven distribution of the alkali liquor is more serious along with the increase of the size of the electrolytic cell, thereby greatly hindering the development of large-scale equipment of the electrolytic cell;

2. The concave-convex structure on the surface of the polar plate enables the polar plates on the two sides to be in top-to-top contact, namely the polar plates are not completely in contact, along with the electrolysis, a large amount of bubbles generated by the small chamber move to the position near the concave-convex top point, so that the contact resistance of the polar plates can be increased, and the electrolysis energy consumption is increased;

3. when bubbles in the electrolysis unit pass through the concave-convex structure, the bubbles are possibly clamped in the concave part, so that the retention time of the bubbles is increased, and the electrolysis energy consumption is increased.

In summary, a new electrode plate structure is needed to overcome the defects of the existing electrode plate.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide an electrode unit with a guiding wedge-shaped structure, when the electrode unit is used for hydrogen production by water electrolysis, due to the arrangement of a plurality of wedge-shaped structure units arranged in a concave-convex manner, a lateral distribution effect is exerted on flowing alkali liquor, uniform distribution of alkali liquor on a polar plate is promoted, fluid disturbance in two directions, namely vertical and lateral directions, can be generated, a turbulence degree of flow is greatly increased, bubble transportation can be accelerated, residence time of bubbles in a chamber is reduced, a mass transfer process of hydrogen production reaction is enhanced, and hydrogen production efficiency of a system is improved.

Another object of the utility model is to propose an electrolysis cell.

In order to achieve the above object, a first aspect of the present invention provides an electrode unit of a guiding wedge structure, including: an electrode frame and an electrode plate;

an electrode plate is arranged in the electrode frame, and the electrode plate and the electrode frame form a liquid storage cavity; the electrode frame is provided with a liquid inlet channel and a gas-liquid outlet channel which are communicated with the liquid storage cavity;

a plurality of wedge-shaped units which are arranged in a concave-convex mode are arranged on the surface, located in the liquid storage cavity, of the electrode plate at intervals; the wedge-shaped units are uniformly distributed, and each wedge-shaped unit is arranged at an acute angle with the flowing direction of the liquid flowing through the electrode plate.

When the electrode unit with the guide wedge-shaped structure is used for hydrogen production by water electrolysis, due to the arrangement of the wedge-shaped structure units arranged in a concave-convex mode, the transverse distribution effect on the flowing alkali liquor is achieved, the uniform distribution of the alkali liquor on the polar plate is promoted, meanwhile, fluid disturbance in the vertical direction and the transverse direction can be generated, the turbulence degree of flowing is greatly increased, the bubble transportation can be accelerated, the retention time of bubbles in a cavity is shortened, the mass transfer process of hydrogen production reaction is strengthened, and the hydrogen production efficiency of the system is improved.

In addition, the electrode unit of the guide wedge structure proposed by the above embodiment of the present invention may also have the following additional technical features:

In one embodiment of the present invention, the electrode frame is ring-shaped; the electrode plate is embedded in the inner circumference of the electrode frame, and the electrode plate and the electrode frame are welded into a whole.

In one embodiment of the utility model, a plurality of convex wedge-shaped units are arranged in a row at certain intervals, and a plurality of concave wedge-shaped units are arranged in a row at certain intervals; the convex wedge-shaped units arranged in rows and the concave wedge-shaped units arranged in rows are mutually parallel and arranged at intervals; the convex wedge-shaped units and the concave wedge-shaped units in two adjacent rows are arranged at intervals.

In one embodiment of the present invention, the wedge units are formed on the electrode plate by cold rolling and deep drawing.

In one embodiment of the utility model each wedge-shaped element is arranged at an angle of 30-45 to the flow direction of the liquid entering the electrode plate from the liquid inlet flow channel.

In one embodiment of the utility model, the wedge-shaped units are composed of two first members and second members which form an acute angle or a right angle with each other; the first member or the second member is disposed at an angle of 30-45 degrees with respect to the direction of flow of the liquid entering the electrode plate from the liquid inlet channel.

In one embodiment of the utility model, in the plurality of raised wedge-shaped units, the first member and the second member are raised in the shape of a cuboid or a cube.

In one embodiment of the utility model, in the plurality of recessed wedge-shaped units, the first member and the second member are grooves in the shape of a cuboid or a cube.

In an embodiment of the present invention, the liquid inlet channel and the gas-liquid outlet channel are disposed opposite to each other, and both the liquid inlet channel and the gas-liquid outlet channel are disposed along a depth direction of the liquid storage chamber.

In one embodiment of the utility model, the liquid inlet flow channel is positioned on the side of the electrode frame, which faces away from the wedge-shaped unit openings, and the gas-liquid outlet flow channel is positioned on the side of the electrode frame, which faces the wedge-shaped unit openings.

In order to achieve the above object, a second aspect of the present invention provides an electrolysis unit, which comprises the electrode unit and the electrode of the guiding wedge structure; the electrode covers the electrode plate of the electrode unit of the guide wedge-shaped structure from one side of the liquid storage cavity, and the electrode is tightly attached to the plurality of the protruding wedge-shaped units.

The electrolysis unit provided by the embodiment of the utility model has the advantages that the electrode unit with the guide wedge-shaped structure has the advantages that the electrode is tightly attached to the plurality of the raised wedge-shaped units, so that the electrode unit with the guide wedge-shaped structure can be in close contact with the surface of the electrode, and the increase of contact resistance caused by the passing of bubbles is avoided.

In one embodiment of the utility model, the electrode is a nickel mesh.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an electrode plate of a conventional electrolytic cell having a convex structure.

Figure 2 is a simplified perspective view of an angle of an electrode unit of a guide wedge structure according to one embodiment of the present invention (recessed wedge elements not shown).

Figure 3 is a perspective view of another angle of the electrode elements of the guide wedge structure of one embodiment of the present invention (recessed wedge elements not shown).

FIG. 4 is a top view of an electrode unit of a guide wedge structure according to one embodiment of the present invention (recessed wedge units not shown).

Fig. 5 is an enlarged schematic view of B in fig. 4.

FIG. 6 is a schematic sectional view of the structure A-A in FIG. 4.

Fig. 7 is a schematic sectional structure view of C-C in fig. 4.

Fig. 8 is a schematic sectional view of the structure of fig. 4 taken along line D-D.

FIG. 9 is a schematic side view of an electrolytic cell according to an embodiment of the present invention.

Reference numerals are as follows:

1-an electrode frame; 2-an electrode plate; 3-a liquid inlet flow channel; 4-gas-liquid outlet flow channel; 5-an electrode; 6-a wedge-shaped unit; 601-a first member; 602-a second member; and 7-a liquid storage cavity.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The electrode unit and the electrolytic unit of the guide wedge structure according to the embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 2 to 8, the electrode unit of the guide wedge structure according to the embodiment of the present invention includes: an electrode frame 1 and an electrode plate 2; an electrode plate 2 is arranged in the electrode frame 1, and the electrode plate and the electrode frame form a liquid storage cavity 7; a liquid inlet flow passage 3 and a gas-liquid outlet flow passage 4 which are communicated with the liquid storage cavity 7 are arranged on the electrode frame 1; a plurality of wedge-shaped units 6 which are arranged in a concave-convex manner are arranged on the surface of the electrode plate 2 in the liquid storage cavity 7 at intervals; the wedge-shaped units 6 are uniformly distributed, and each wedge-shaped unit 6 is arranged at an acute angle with the flowing direction of the liquid flowing through the electrode plate 2.

It can be understood that when the hydrogen is produced by electrolyzing water, the alkali liquor enters from the liquid inlet flow channel and uniformly flows through the gaps of the wedge-shaped units when flowing through the electrode plate, the wedge-shaped units are arranged in a concave-convex mode, so that the alkali liquor can be distributed along the direction parallel to the surface of the electrode plate, and the alkali liquor can disturb the fluid along the direction vertical to the surface of the electrode plate when flowing through the electrode plate due to the fact that the wedge-shaped units are provided with protrusions and recesses.

To sum up, when the guiding wedge-shaped structural electrode unit of the embodiment of the utility model is used for hydrogen production by water electrolysis, the arrangement of the plurality of concave-convex wedge-shaped structural units plays a role in transversely distributing alkali liquor flowing into the liquid inlet flow channel and passing through the electrode plate, promotes the uniform distribution of the alkali liquor on the electrode plate, can generate fluid disturbance in vertical and transverse directions, greatly increases the turbulence degree of flow, can accelerate bubble transportation, reduces the retention time of bubbles in a cavity, strengthens the mass transfer process of hydrogen production reaction, and improves the hydrogen production efficiency of the system.

Optionally, the electrode frame 1 is annular; the electrode plate 2 is embedded in the inner circumference of the electrode frame 1, and both are welded integrally.

Optionally, as shown in fig. 2-4 and 6-8, a plurality of convex wedge units 6 are arranged in a row at certain intervals, and a plurality of concave wedge units 6 are arranged in a row at certain intervals; the convex wedge-shaped units 6 arranged in rows and the concave wedge-shaped units 6 arranged in rows are parallel to each other and are arranged at intervals. The convex wedge-shaped units and the concave wedge-shaped units in two adjacent rows are arranged at intervals. It should be noted that "convex" and "concave" are opposite, and both refer to the electrode plate surface, the former is distributed toward the side close to the liquid storage cavity, and the latter is distributed toward the side far from the liquid storage cavity. The convex wedge-shaped units can be arranged in a plurality of rows, the concave wedge-shaped units can also be arranged in a plurality of rows, the rows arranged in the convex wedge-shaped units and the concave wedge-shaped units are based on the size of the electrode plate, the larger the size of the electrode plate is, the more the rows are, and the less the rows are. However, it is necessary to ensure that both sides of each row of the convex wedge-shaped units are adjacent to one row of the concave wedge-shaped units, and each convex wedge-shaped unit is arranged at an interval with the adjacent concave wedge-shaped units. The distance between two adjacent rows of wedge-shaped units and the distance between two adjacent wedge-shaped units in the same row can be equal or different, but preferably, the distance between two adjacent rows of wedge-shaped units is larger than the distance between two adjacent wedge-shaped units in the same row. The distance between two convex wedge-shaped units belonging to the same row is equal to the distance between two concave wedge-shaped units belonging to the same row.

Alternatively, the wedge units 6 are formed on the electrode plate 2 by cold rolling and deep drawing. It will be appreciated that the opposite sides of the electrode plate are respectively processed by cold rolling and deep drawing, and when the concave wedge-shaped elements are formed on one side of the drawing, the convex wedge-shaped elements are formed on the other side, and vice versa, so that a plurality of concave and convex wedge-shaped elements are formed on the surface of the electrode plate, as shown in fig. 6-8. Preferably, the electrode plate can be made of steel plate.

Alternatively, as shown in fig. 2-4, each wedge-shaped element 6 is arranged at an angle of 30-45 deg., preferably 45 deg., to the flow direction of the liquid entering the electrode plate 2 from the liquid inlet flow channel 3, as shown in fig. 5. Further, as shown in fig. 5, the plurality of wedge units 6 are each composed of two first members 601 and second members 602 which are at an acute angle or a right angle to each other; the first member 601 or the second member 602 is disposed at an angle of 30-45 deg., preferably 45 deg., to the flow direction of the liquid entering the electrode plate 2 from the liquid inlet channel 3. Preferably, in the wedge-shaped unit 6 with a plurality of protrusions, the first member 601 and the second member 602 are protrusions with a rectangular parallelepiped shape or a square cube shape, and preferably rectangular cube-shaped protrusions. In the plurality of recessed wedge-shaped cells 6, the first member 601 and the second member 602 are rectangular parallelepiped or square-shaped grooves, preferably rectangular parallelepiped-shaped grooves. It is understood that the first member 601 and the second member 602 have a rectangular or square shape, and the surface thereof is smooth, which can reduce the fluid resistance. However, the first member 601 and the second member 602 may have non-smooth surfaces, so that the wedge-shaped units can also function as turbulence in the lateral and vertical directions, but the effect of reducing the fluid resistance is weaker.

Optionally, the liquid inlet channel 3 and the gas-liquid outlet channel 4 are both arranged on the surface of the electrode frame 1 away from the electrode plate and located on one side in the liquid storage cavity 7, and they are arranged oppositely; the liquid inlet channel 3 and the gas-liquid outlet channel 4 are both arranged along the depth direction of the liquid storage cavity 7.

The electrode plate 2 may be disposed coaxially with the electrode frame 1, or the electrode plate and the electrode frame may have a slight angle as necessary. When an included angle exists, the electrode plate inclines from one side of the liquid inlet flow passage 3 to one side of the gas-liquid outlet flow passage, so that the resistance of fluid flowing through the electrode plate is not increased, and the effect of uniform distribution of liquid is not damaged.

Preferably, the liquid inlet channel 3 is located on the side of the electrode frame 1 facing away from the wedge-shaped unit openings, and the gas-liquid outlet channel 4 is located on the side of the electrode frame 1 facing the wedge-shaped unit openings (i.e. the side where the first member 601 and the second member 602 form an acute angle or a right angle with each other). Thus, when the liquid flowing in from the liquid inlet flow passage 3 flows through the electrode plate, the liquid needs to go through a distribution process of a path from narrow to wide every time the liquid passes through the concave wedge-shaped units or the convex wedge-shaped units in a row, and the uniformity of liquid distribution can be improved.

When in use, the electrode unit with the guide wedge-shaped structure of the embodiment of the utility model and the nickel mesh electrode 5 covered on the liquid storage cavity side (the nickel mesh electrode 5 is covered on the electrode plate 2) are fastened to form a corresponding electrolysis chamber (electrolysis unit), as shown in fig. 4. The raw material alkali liquor flows in through the alkali liquor inlet flow passage 3, an electrolytic reaction is carried out in the electrolytic unit to generate hydrogen or oxygen, and then the mixture of the alkali liquor and the gas flows out from the gas-liquid outlet flow passage 4 to enter the next working section. In the whole working process, the wedge-shaped structural units which are arranged in a concave-convex mode play a role in transversely distributing flowing alkali liquor, and the alkali liquor is promoted to be uniformly distributed on the electrode plate; meanwhile, the wedge-shaped structural units arranged in a concave-convex mode can generate fluid disturbance in the vertical direction and the transverse direction, the turbulence degree of flowing is greatly increased, bubble transportation can be accelerated, the retention time of bubbles in the cavity is shortened, the mass transfer process of hydrogen production reaction is enhanced, and the hydrogen production efficiency of the system is improved.

The electrode unit with the guide wedge-shaped structure can be used in the field of hydrogen production through water electrolysis, such as an electrolysis unit and an electrolytic hydrogen production system.

As shown in fig. 9, an electrolysis cell comprising the electrode unit of the guide wedge structure of the above embodiment and an electrode 5; the electrode 5 covers the electrode plate 2 of the electrode unit with the guide wedge-shaped structure from one side of the liquid storage cavity, and the electrode 5 is tightly attached to the plurality of the protruding wedge-shaped units 6. Among them, the electrode 5 may be a metal mesh, preferably a nickel mesh.

A preferred embodiment of the present invention is described below with reference to fig. 2-9.

As shown in fig. 2 to 8, an electrode unit of a guide wedge structure includes an annular steel electrode frame 1, and an electrode plate 2 is welded in the inner circumference of the electrode frame 1. The electrode plate 2 and the electrode frame 1 are both arranged parallel to the horizontal plane, and the upper surface of the electrode plate 2 and the side wall of the electrode frame 1 form a liquid storage cavity 7. The electrode plate 2 is a steel plate, a plurality of concave-convex arranged wedge-shaped units 6 are uniformly distributed on the upper surface of the electrode plate 2, specifically, from the side close to the liquid inlet flow channel 3, the surface of the electrode plate 2 is sequentially provided with a first row of concave wedge-shaped units 6, a first row of convex wedge-shaped units 6, a second row of concave wedge-shaped units 6 and a second row of convex wedge-shaped units 6 … …, and thus the concave wedge-shaped units 6 and the convex wedge-shaped units 6 arranged in rows are arranged at intervals and in parallel until the side close to the gas-liquid outlet flow channel 4; each row of concave wedge-shaped units 6 is composed of a plurality of concave wedge-shaped units 6 arranged at certain intervals, each row of convex wedge-shaped units 6 is composed of a plurality of convex wedge-shaped units 6 arranged at certain intervals, the interval between every two adjacent rows of wedge-shaped units 6 is larger than the interval between every two adjacent wedge-shaped units 6 in the same row, and every two adjacent rows of convex wedge-shaped units 6 and every two concave wedge-shaped units 6 are arranged at intervals. As shown in FIGS. 2-5, each wedge-shaped unit 6 is formed by two smooth surfaced cuboids forming an angle of 90 degrees with each other (i.e. both the first 601 and the second 602 member are smooth surfaced cuboids), and the wedge-shaped unit 6 forms an angle of 45 degrees with the flow direction of the body of lye. The wedge-shaped units 6 are formed on the surface of the electrode plate 2 by adopting a cold rolling deep drawing mode. Two opposite sides of the top of the electrode frame 1 are respectively provided with a liquid inlet flow passage 3 and a gas-liquid outlet flow passage 4, the liquid inlet flow passage 3 and the gas-liquid outlet flow passage 4 are both in a cylinder and cuboid combined figure, and one side close to the liquid storage cavity 7 is cuboid. The depths of the cuboid parts of the liquid inlet flow channel 3 and the gas liquid outlet flow channel 4 extend from the top of the electrode frame 1 to the upper surface of the electrode plate 2, the depths of the cylindrical parts extend from the top of the electrode frame 1 to the bottom of the electrode frame, and the lengths of the liquid inlet flow channel 3 and the gas liquid outlet flow channel 4 extend from the middle part of the electrode frame 1 to the liquid storage cavity 7 and are communicated with the liquid storage cavity 7. The liquid inlet channel 3 is positioned on the side of the electrode frame 1, which faces away from the wedge-shaped unit openings, and the gas-liquid outlet channel 4 is positioned on the side of the electrode frame 1, which faces the wedge-shaped unit openings (i.e. the side of the first member 601 and the second member 602 which form an acute angle or a right angle with each other).

When in use, as shown in fig. 9, the electrode unit of the guiding wedge structure of the present embodiment and the nickel mesh electrode 5 covered on the liquid storage cavity side (the nickel mesh electrode 5 is covered on the electrode plate 2) are fastened to form a corresponding electrolysis chamber (electrolysis unit). The raw material alkali liquor flows in through the alkali liquor inlet flow passage, the electrolysis reaction is carried out in the electrolysis unit to generate hydrogen or oxygen, and then the mixture of the alkali liquor and the gas flows out from the gas-liquid outlet flow passage 4 and enters the next working section. Because the plate electrode level sets up, and wedge unit top is horizontal structure, and nickel screen material electrode hugs closely with a plurality of bellied wedge units of plate electrode, realizes the in close contact of nickel screen material electrode and plate electrode 2 "face and face", has avoided the increase of the contact resistance that the bubble leads to when passing through.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" and the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. An electrode unit for guiding a wedge-shaped structure, comprising: an electrode frame and an electrode plate;

An electrode plate is arranged in the electrode frame, and the electrode plate and the electrode frame form a liquid storage cavity; the electrode frame is provided with a liquid inlet flow passage and a gas-liquid outlet flow passage which are communicated with the liquid storage cavity;

a plurality of wedge-shaped units which are arranged in a concave-convex mode are arranged on the surface, located in the liquid storage cavity, of the electrode plate at intervals; the wedge-shaped units are uniformly distributed, and each wedge-shaped unit is arranged at an acute angle with the flowing direction of the liquid flowing through the electrode plate.

2. The guide wedge structure electrode unit of claim 1, wherein the electrode frame is ring-shaped; the electrode plate is embedded in the inner circumference of the electrode frame, and the electrode plate and the electrode frame are welded into a whole.

3. The electrode unit of a guided wedge structure of claim 1, wherein a plurality of raised wedge units are spaced in a row, and a plurality of recessed wedge units are spaced in a row; the convex wedge-shaped units arranged in rows and the concave wedge-shaped units arranged in rows are mutually parallel and arranged at intervals; the convex wedge-shaped units and the concave wedge-shaped units in two adjacent rows are arranged at intervals;

and/or a plurality of wedge-shaped units are formed on the electrode plate by means of cold rolling and deep drawing.

4. A guide wedge structure electrode unit as claimed in claim 1, wherein each wedge unit is disposed at an angle of 30-45 ° to the direction of flow of liquid entering the electrode plate from the liquid inlet channel.

5. The electrode unit of a guided wedge structure of claim 1, wherein the plurality of wedge units are each composed of two first and second members at an acute or right angle to each other; the first member or the second member is disposed at an angle of 30-45 degrees with respect to the direction of flow of the liquid entering the electrode plate from the liquid inlet channel.

6. The electrode unit of the guide wedge structure of claim 5, wherein in the plurality of raised wedge units, the first member and the second member are raised in a rectangular or square shape;

and/or in the plurality of concave wedge-shaped units, the first member and the second member are grooves in a rectangular or square shape.

7. The guide wedge structure electrode unit of claim 5, wherein the liquid inlet channel and the gas-liquid outlet channel are arranged oppositely, and the liquid inlet channel and the gas-liquid outlet channel are arranged along the depth direction of the liquid storage cavity.

8. The electrode unit of the guide wedge structure as set forth in claim 1, wherein said liquid inlet channel is located on a side of the electrode frame facing away from the plurality of wedge unit openings, and said gas-liquid outlet channel is located on a side of the electrode frame facing the plurality of wedge unit openings.

9. An electrolysis cell comprising an electrode unit and an electrode of a guided wedge structure according to any one of claims 1 to 8; the electrode covers the electrode plate of the electrode unit of the guide wedge-shaped structure from one side of the liquid storage cavity, and the electrode is tightly attached to the plurality of the protruding wedge-shaped units.

10. The electrolysis cell of claim 9, wherein the electrode is a nickel mesh.

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