Environment-friendly and energy-saving hydrogen production electrolytic cell

Abstract

The utility model discloses an environment-friendly energy-saving hydrogen production electrolytic bath, which relates to the technical field of water electrolysis hydrogen production and comprises an anode end plate and a cathode end plate, a plurality of electrolysis units are mounted between the anode end plate and the cathode end plate in a matched manner, and an electrolysis cavity is arranged in each electrolysis unit. And a liquid outlet ring pipe and a liquid inlet ring pipe are respectively arranged above and below the electrolysis unit. When the hydrogen production device is used, electrolyte enters the liquid inlet cavity through the liquid inlet and then enters the electrolysis cavity through the liquid inlet through pipe, the liquid inlet ring pipe and the liquid inlet channel, so that the flowing paths of alkali liquor are the same, the electrolyte flow distribution of each electrolysis unit is the same, the waste of electric energy is reduced, the energy loss is reduced, and the hydrogen production efficiency is improved; the energy is saved. According to the utility model, electrolyte enters the electrolysis cavity after passing through the liquid inlet cavity, so that short circuit of electric ions is avoided, the safety is high, and the practicability is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by electrolyzing water, in particular to an environmentally friendly and energy-saving hydrogen production electrolytic cell. Background Technique

[0002] The key core equipment for hydrogen production by electrolyzing water is the electrolytic cell. The electrolytic cell is composed of multiple electrolytic chambers stacked together, and its basic components include: electrode plates, diffusion layers, catalysts, and diaphragms. Each electrolytic chamber includes an anode plate, a cathode plate, and a diaphragm. The diaphragm is arranged between the anode plate and the cathode plate, dividing the anode plate side and the cathode plate side into an anode chamber and a cathode chamber. The anode chamber and the cathode chamber are filled with electrolyte. After the electrolytic cell is powered on, a chemical reaction occurs between the anode plate, the cathode plate, and the electrolyte to produce hydrogen.

[0003] Currently, in alkaline electrolytes, the alkali solution channels are distributed in a U shape. Each electrolysis unit corresponds to a U-shaped channel and is connected in parallel. In the above structure, the lengths of the paths through which the electrolyte flows are different and the resistances are different, resulting in inconsistent alkali solution flow rates in the electrolytic chambers of the electrolytic cell. Generally, the flow rate is large at the central position and small on both sides, and even a dead zone with no flow rate is formed at the outermost side, causing the distribution of the alkali solution flow rate on the electrode plates to be very uneven, thereby resulting in low hydrogen production efficiency of the electrolytic cell, large energy loss, and high energy consumption.

[0004] Therefore, in combination with the structural design of the existing electrolytic cell, the applicant has researched and designed an electrolytic cell for producing hydrogen by controlling the flow rate of the electrolyte Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the above-mentioned technical defects and provide an environmentally friendly and energy-saving hydrogen production electrolytic cell. The purpose is to make the paths and resistances of the alkali solution flowing through each electrolysis unit the same by connecting the liquid inlet ring pipe to each electrolysis unit, so as to achieve the technical effect that the alkali solution flow rate in each electrolytic chamber is the same, and objectively solve the technical problems of low hydrogen production efficiency and high energy consumption caused by different electrolyte flow rates.

[0006] To solve the above technical problem, the technical solution provided by the utility model is: an environmentally friendly and energy-saving hydrogen production electrolytic cell, including an anode end plate and a cathode end plate. A number of electrolysis units are cooperatively installed between the anode end plate and the cathode end plate. An electrolysis cavity is arranged inside the electrolysis unit. A liquid outlet ring pipe and a liquid inlet ring pipe are respectively arranged above and below the electrolysis unit;

[0007] A liquid outlet channel communicating with the electrolysis cavity is arranged at the upper end of the electrolysis unit, and a liquid inlet channel communicating with the electrolysis cavity is arranged at the lower end of the electrolysis unit. The liquid outlet channel is communicated with the liquid outlet ring pipe, and the liquid inlet channel is communicated with the liquid inlet ring pipe;

[0008] A liquid outlet ball is arranged at the center of the liquid outlet ring pipe. A liquid outlet cavity is arranged inside the liquid outlet ball. A liquid outlet is arranged at the upper end thereof and is communicated with the liquid outlet cavity. The liquid outlet cavity is communicated with the liquid outlet ring pipe through a liquid outlet through pipe;

[0009] A liquid inlet ball is arranged at the center of the liquid inlet ring pipe. A liquid inlet cavity is arranged inside the liquid inlet ball. A liquid inlet is arranged at the lower end thereof and is communicated with the liquid inlet cavity. The liquid inlet cavity is communicated with the liquid inlet ring pipe through a liquid inlet through pipe.

[0010] Furthermore, the electrolysis units are arranged in an annular array, and both the positive electrode end plate and the negative electrode end plate are annular.

[0011] Furthermore, the liquid outlet ring pipe is annular, and its lower end is communicated with the liquid outlet channel. The liquid inlet ring pipe is annular, and its upper end is communicated with the liquid inlet channel.

[0012] The advantages of the present utility model compared with the prior art are as follows: When the present utility model is in use, the electrolytic solution enters the liquid inlet cavity through the liquid inlet, then enters the electrolysis cavity through the liquid inlet through pipe, the liquid inlet ring pipe, and the liquid inlet channel, so that the flow path of each alkali solution is the same, and the flow rate distribution of the electrolytic solution of each electrolysis unit is also the same, reducing the waste of electric energy, reducing the energy loss, improving the hydrogen production efficiency, and being energy-saving and environment-friendly. The electrolytic solution of the present utility model enters the electrolysis cavity after passing through the liquid inlet cavity, avoiding the short circuit of electric ions, having high safety and strong practicability. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of an environment-friendly and energy-saving hydrogen production electrolytic cell of the present utility model.

[0014] Figure 2 is a cross-sectional view of an environment-friendly and energy-saving hydrogen production electrolytic cell of the present utility model.

[0015] Figure 3 is a schematic structural diagram of a liquid outlet ring pipe in an environment-friendly and energy-saving hydrogen production electrolytic cell of the present utility model.

[0016] Figure 4 is a schematic structural diagram of a liquid inlet ring pipe in an environment-friendly and energy-saving hydrogen production electrolytic cell of the present utility model.

[0017] As shown in the figure: 1. Positive electrode end plate, 2. Negative electrode end plate, 3. Electrolysis unit, 301. Electrolysis cavity, 302. Liquid outlet channel, 303. Liquid inlet channel, 4. Liquid outlet ring pipe, 401. Liquid outlet ball, 4011. Liquid outlet cavity, 5. Liquid inlet ring pipe, 501. Liquid inlet ball, 5011. Liquid inlet cavity, 6. Liquid outlet, 7. Liquid inlet, 8. Liquid outlet through pipe, 9. Liquid inlet through pipe. Detailed Embodiment

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] In the description of the embodiments of the present utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0020] In addition, if terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0021] In the description of the embodiments of the present utility model, "a plurality" represents at least two.

[0022] In the description of the embodiments of the present utility model, it should also be noted that unless otherwise clearly specified and limited, if terms such as "set", "installed", "connected", "connected" are understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0023] Embodiment 1:

[0024] Combined with the attached Figures 1 to 4 , an environmentally friendly and energy-saving hydrogen production electrolytic cell, including an anode end plate 1 and a cathode end plate 2. A number of electrolysis units 3 are cooperatively installed between the anode end plate 1 and the cathode end plate 2. An electrolysis cavity 301 is arranged inside the electrolysis unit 3. A liquid outlet ring pipe 4 and a liquid inlet ring pipe 5 are respectively arranged above and below the electrolysis unit 3;

[0025] The electrolysis unit 3 has a liquid outlet channel 302 at its upper end connected to the electrolysis chamber 301, and a liquid inlet channel 303 at its lower end connected to the electrolysis chamber 301. The liquid outlet channel 302 is connected to the liquid outlet ring pipe 4, and the liquid inlet channel 303 is connected to the liquid inlet ring pipe 5.

[0026] The center of the liquid outlet ring tube 4 is provided with a liquid outlet ball 401, a liquid outlet cavity 4011 is provided in the liquid outlet ball 401, and a liquid outlet port 6 connected to the liquid outlet cavity 4011 is provided at the upper end thereof, and the liquid outlet cavity 4011 is connected to the liquid outlet ring tube 4 through a liquid outlet pipe 8;

[0027] A liquid inlet ball 501 is arranged at the center of the liquid inlet ring tube 5. A liquid inlet cavity 5011 is arranged inside the liquid inlet ball 501. A liquid inlet port 7 communicating with the liquid inlet cavity 5011 is arranged at the lower end thereof. The liquid inlet cavity 5011 is communicated with the liquid inlet ring tube 5 through a liquid inlet pipe 9.

[0028] A preferred implementation manner of this embodiment is that the electrolytic units 3 are arranged in a ring array, and the anode end plate 1 and the cathode end plate 2 are both in a ring shape.

[0029] A preferred implementation of this embodiment is that the liquid outlet ring tube 4 is annular, and its lower end is connected to the liquid outlet channel 302 , and the liquid inlet ring tube 5 is annular, and its upper end is connected to the liquid inlet channel 303 .

[0030] A preferred implementation of this embodiment is that the liquid outlet pipes 8 are arranged in a plurality of annular arrays, and the inner diameter thereof is the same as that of the liquid outlet annular pipe 4 .

[0031] A preferred implementation of this embodiment is that the liquid inlet through pipes 9 are arranged in a plurality of annular arrays, and the inner diameter thereof is the same as that of the liquid inlet annular pipe 5 .

[0032] A preferred implementation manner of this embodiment is that the liquid outlet ball 401 and the liquid inlet ball 501 are both spherical in shape.

[0033] During the specific implementation of the utility model, the electrolyte first enters the liquid inlet cavity in the liquid inlet ball through the liquid inlet hole, and then enters the liquid inlet annular tube after passing through the liquid inlet tube. The upper end of the liquid inlet annular tube is divided into multiple strands and respectively passes through the liquid inlet channel corresponding to each electrolysis unit and then enters the electrolysis cavity of each electrolysis unit. The electrolyte in the electrolysis cavity is collected into the liquid outlet annular tube after passing through the liquid outlet channel, and then further collected into the liquid outlet cavity in the liquid outlet ball after passing through the liquid outlet tube, and finally flows out of the electrolytic cell through the liquid outlet. The total length of the entire electrolyte flow path is the same for each electrolysis unit, and the resistance encountered by the electrolyte flowing through each electrolysis unit is the same, and thus the electrolyte flow distribution of each electrolysis unit is also the same. The problem of very uneven distribution of the alkali liquid flow rate on the electrode plate is avoided, the waste of electric energy is reduced, the energy loss is reduced, and the hydrogen production efficiency is improved.

[0034] The above describes the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the creation of the present utility model, design similar structural modes and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. An environmentally friendly and energy-saving hydrogen production electrolyzer, characterized in that: It includes an anode end plate and a cathode end plate, wherein a plurality of electrolysis units are installed between the anode end plate and the cathode end plate, wherein an electrolysis chamber is arranged inside the electrolysis unit, and a liquid outlet ring pipe and a liquid inlet ring pipe are arranged above and below the electrolysis unit respectively; The upper end of the electrolysis unit is provided with a liquid outlet channel connected to the electrolysis chamber, and the lower end thereof is provided with a liquid inlet channel connected to the electrolysis chamber, the liquid outlet channel is connected to the liquid outlet ring pipe, and the liquid inlet channel is connected to the liquid inlet ring pipe; A liquid outlet ball is arranged at the center of the liquid outlet ring tube, a liquid outlet cavity is arranged in the liquid outlet ball, a liquid outlet communicating with the liquid outlet cavity is arranged at the upper end of the liquid outlet ball, and the liquid outlet cavity is communicated with the liquid outlet ring tube through a liquid outlet through-tube; A liquid inlet ball is arranged at the center of the liquid inlet ring tube, a liquid inlet cavity is arranged in the liquid inlet ball, a liquid inlet port connected with the liquid inlet cavity is arranged at the lower end of the liquid inlet ball, and the liquid inlet cavity is connected with the liquid inlet ring tube through a liquid inlet through-tube.

2. The environmentally friendly and energy-saving hydrogen production electrolyzer according to claim 1 is characterized in that: The electrolytic units are arranged in a ring array, and the anode end plate and the cathode end plate are both in a ring shape.

3. The environmentally friendly and energy-saving hydrogen production electrolyzer according to claim 1 is characterized in that: The liquid outlet annular tube is annular in shape, and its lower end is communicated with the liquid outlet channel; the liquid inlet annular tube is annular in shape, and its upper end is communicated with the liquid inlet channel.

4. The environmentally friendly and energy-saving hydrogen production electrolyzer according to claim 1 is characterized in that: The liquid outlet through pipes are arranged in a plurality of annular arrays, and have the same inner diameter as the liquid outlet annular pipe.

5. The environmentally friendly and energy-saving hydrogen production electrolyzer according to claim 1, characterized in that: The liquid inlet through pipes are arranged in a plurality of annular arrays, and have the same inner diameter as the liquid inlet annular pipe.

6. The environmentally friendly and energy-saving hydrogen production electrolyzer according to claim 1, characterized in that: The liquid outlet ball and the liquid inlet ball are both spherical in shape.

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