Square modular alkaline electrolytic cell without sealing structure

Abstract

The invention discloses a square modular alkaline electrolytic bath without a sealing structure. The square modular alkaline electrolytic bath comprises a frame and electrolysis units, a plurality of mounting cavities are formed in the frame, and the electrolysis units are mounted in the mounting cavities; the electrolysis unit comprises an anode plate, an anode electrode, a diaphragm, a cathode electrode and a cathode plate; electrolysis cavities are formed in the surfaces of the anode plate and the cathode plate; the anode electrode and the cathode electrode are respectively arranged in the electrolysis cavities of the anode plate and the cathode plate; the diaphragm is arranged between the anode electrode and the cathode electrode; the sides, provided with the electrolysis cavities, of the anode plate and the cathode plate are buckled with each other, and the anode plate and the cathode plate are fused into a whole by utilizing a hot press molding process; a liquid inlet and a liquid outlet which are communicated with the electrolysis cavity are formed in the surfaces of the anode plate and the cathode plate. The electrolytic tank is good in sealing performance and convenient to assemble.

Description

Technical Field

[0001] The invention relates to the technical field of electrolytic cells, and more particularly to a square modular alkaline electrolytic cell without a sealing structure. Background Art

[0002] Today's global energy landscape is undergoing profound changes. Environmental and sustainability issues caused by traditional fossil energy have prompted the development and utilization of clean energy to become a research focus in countries around the world. Water electrolysis hydrogen production technology has broad prospects in many fields and has attracted much attention because it can produce high-purity hydrogen. As a key equipment, the technical level of alkaline electrolyzers greatly affects the efficiency and economy of the hydrogen production industry.

[0003] However, the existing alkaline electrolyzer technology has many limitations, which are mainly reflected in the following aspects:

[0004] 1. Traditional alkaline electrolyzers are usually fastened with bolts and sealed with sealing rings. This structure not only makes the electrolyzer bulky and heavy, but also makes the seals prone to aging and leakage due to long-term use, which seriously affects the reliability and safety of the equipment. In addition, the complex sealing structure increases the manpower, material and time costs of production and manufacturing, restricting the improvement of production efficiency.

[0005] 2. The assembly process of traditional alkaline electrolyzers is cumbersome, the connection method of components is poor, the sealing performance is poor, and it is easy to cause gas leakage, electrolyte leakage and other problems. These defects not only increase the probability of assembly errors and rework rate, but also bring great inconvenience to the maintenance and repair of equipment, increase maintenance costs and downtime, and reduce equipment availability.

[0006] Therefore, it is an urgent problem for those skilled in the art to develop a square modular alkaline electrolytic cell with good sealing performance and convenient assembly without sealing structure. Summary of the invention

[0007] In view of this, the present invention provides a square modular alkaline electrolytic cell with good sealing performance and convenient assembly without sealing structure.

[0008] In order to achieve the above object, the present invention adopts the following technical solution:

[0009] A square modular alkaline electrolyzer without a sealing structure, comprising:

[0010] frame,

[0011] An electrolysis unit, wherein a plurality of mounting cavities are arranged on the frame, and the electrolysis unit is installed in the mounting cavities; the electrolysis unit comprises: an anode plate, an anode electrode, a diaphragm, a cathode electrode and a cathode plate; electrolysis cavities are provided on the surfaces of the anode plate and the cathode plate; the anode electrode and the cathode electrode are respectively arranged in the electrolysis cavities of the anode plate and the cathode plate; the diaphragm is placed between the anode electrode and the cathode electrode; the anode plate and the cathode plate are provided with one side of the electrolysis cavity, which are interlocked with each other, and the anode plate and the cathode plate are fused into one by a hot pressing process; the surfaces of the anode plate and the cathode plate are provided with a liquid inlet and a liquid outlet connected to the electrolysis cavity.

[0012] The beneficial effect of adopting the above technical solution is that, through the snap-fitting of the anode plate and the cathode plate and the hot pressing process, there is no need for traditional sealing rings, which fundamentally solves the problems of seal aging and leakage, and ensures the sealing and reliability of the electrolytic cell under long-term operation; the modular design allows the electrolytic unit to be quickly installed and replaced, reducing the difficulty of assembly and maintenance costs.

[0013] Preferably, the anode electrode and the cathode electrode are both provided with tabs, and the anode plate and the cathode plate are provided with mounting grooves at positions corresponding to the tabs, and the tabs are placed in the mounting grooves. The presence of the tabs ensures a reliable connection between the electrode and an external power source, and fixing the tabs through the mounting grooves further enhances the stability of the connection, thereby avoiding interruption of power transmission or reduction in efficiency due to poor contact.

[0014] Preferably, a nipple is provided on the side wall of the electrolysis chamber opposite to the anode electrode or cathode electrode. The presence of the nipple increases the contact area between the electrolyte and the electrode, optimizes the distribution and flow characteristics of the electrolyte, enables the electrolyte to cover the electrode surface more evenly, and improves the uniformity of the electrolysis reaction. By promoting the exchange of substances and charge transfer between the electrolyte and the electrode, the nipple can effectively improve the electrolysis efficiency, reduce the energy loss during the electrolysis process, and increase the generation rate of hydrogen and oxygen.

[0015] Preferably, positioning holes and positioning posts are respectively provided on the sides of the anode plate and the cathode plate that are buckled together, and when the anode plate and the cathode plate are buckled together, the positioning posts are plugged into the positioning holes. The cooperation between the positioning holes and the positioning posts ensures the precise alignment of the anode plate and the cathode plate during assembly, avoids problems such as poor sealing and electrolyte leakage caused by assembly errors, and improves assembly accuracy and quality. The precise positioning structure enables the anode plate and the cathode plate to be tightly combined during the hot pressing process, enhances the structural stability of the entire electrolytic unit, and ensures that the plates will not loosen or deform during operation of the electrolytic cell.

[0016] Preferably, the plurality of installation cavities are distributed in an array, and an opening for installing the electrolytic unit is provided at the end of the installation cavity, and a handle is provided on one side of the electrolytic unit located at the opening end of the installation cavity. The provision of the handle facilitates the installation and removal of the electrolytic unit.

[0017] Preferably, the electrolytic cell is also provided with a liquid inlet pipe, the liquid inlet pipe includes a main liquid inlet pipe and a branch liquid inlet pipe, and a flow valve for detecting the flow of the branch liquid inlet pipe and a rotary switch for controlling the flow of the branch liquid inlet pipe are provided at the connection between the branch liquid inlet pipe and the main liquid inlet pipe; a plurality of the liquid inlets are connected to the branch liquid inlet pipe. The flow valve and the rotary switch provided on the branch liquid inlet pipe can accurately control the electrolyte flow of each electrolytic unit, and monitor the flow change in real time, so as to ensure the stability and reliability of the electrolyte supply and further optimize the electrolysis process. The liquid inlet pipe design can flexibly adjust the flow distribution according to the number and arrangement of different electrolytic units, adapt to a variety of operating conditions, and enhance the adaptability and flexibility of the electrolytic cell system.

[0018] Preferably, the liquid outlet is connected to a gas-liquid separator, which is connected to a liquid outlet pipe and an exhaust pipe. The gas-liquid separator can effectively separate the gas and liquid produced by the electrolytic reaction, avoid pipeline blockage or equipment damage caused by mixed discharge of gas and liquid, and improve the operating efficiency and safety of the electrolytic cell.

[0019] Preferably, the side walls of the anode plate and the cathode plate are both provided with a slide groove, and the inner wall of the installation cavity is provided with a slide rail at a position corresponding to the slide groove; the slide rail is also provided with a movable buckle, and a slot corresponding to the movable buckle is provided in the slide groove. The cooperation between the slide groove and the slide rail provides a path for rapid installation and replacement of the electrolytic unit, and the operator can easily push the electrolytic unit into or out of the installation cavity without complicated tools or operations, thereby improving maintenance efficiency.

[0020] Preferably, a power supply socket is provided at a position on the frame corresponding to the pole ear, and the power supply socket comprises: a fixed frame, a spring and a terminal; the fixed frame is embedded in the frame, the spring and the terminal are located in the fixed frame, one end of the spring is connected to the fixed frame, and the other end is connected to the terminal, the pole ear is plugged between the two terminals, and the terminal is connected to the wire. The power supply socket adopts a spring plug-in design, which can effectively solve the problems of poor contact and looseness that are prone to occur in the traditional connection method during long-term use, ensure the stable power supply of the electrolytic unit, and improve the reliability of the electrical connection.

[0021] It can be seen from the above technical solutions that, compared with the prior art, the present invention discloses a square modular alkaline electrolytic cell without a sealing structure, which has the following beneficial effects:

[0022] (1) The anode plate and cathode plate are fastened together and an integrated seal is achieved through a hot pressing process, which completely solves the leakage problem caused by aging and wear of traditional sealing rings, ensures the sealing and reliability of the electrolytic cell under long-term operation, and improves the safety of the equipment;

[0023] (2) The modular design makes the installation and replacement of the electrolytic unit extremely convenient. Through the slide groove, slide rail, movable buckle and other structures, the electrolytic unit can be quickly plugged in and out without complicated tools or operations. At the same time, the independent electrolytic unit design facilitates local maintenance and troubleshooting, reduces equipment downtime and reduces maintenance costs. 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 drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0025] Figure 1 A schematic structural diagram of an electrolytic cell provided by the present invention from one perspective;

[0026] Figure 2 A schematic structural diagram of the electrolytic cell provided by the present invention from another perspective;

[0027] Figure 3 A side view of an electrolytic cell provided by the present invention;

[0028] Figure 4 A front view of the electrolytic cell provided by the present invention;

[0029] Figure 5 A rear view of the electrolytic cell provided by the present invention;

[0030] Figure 6 An exploded view of the structure of the electrolysis unit provided by the present invention;

[0031] Figure 7 A schematic diagram of the structure of one end of the electrolysis unit provided by the present invention;

[0032] Figure 8 A schematic diagram of the structure of the other end of the electrolysis unit provided by the present invention;

[0033] Fig. 9 A schematic diagram of the structure of the installation cavity provided by the present invention;

[0034] Fig.10 A schematic diagram of the structure of the connection position between the installation cavity and the electrolysis unit provided by the present invention;

[0035] Fig.11 A schematic diagram of the structure of the power supply socket provided by the present invention;

[0036] Fig.12 A top view of the power socket provided by the present invention;

[0037] Fig.13 The present invention provides Fig.14 Sectional view at AA in the middle;

[0038] Fig.14 Several array arrangements of electrolytic units in the electrolytic cell provided by the present invention.

[0039] Among them, in the figure,

[0040] 1-Framework;

[0041] 11-slide rail; 12-movable buckle;

[0042] 13- Power supply socket;

[0043] 131-fixed frame; 132-spring; 133-connecting post;

[0044] 14-knob;

[0045] 2-Electrolysis unit;

[0046] 21-anode plate; 22-anode electrode; 23-diaphragm; 24-cathode electrode; 25-cathode plate; 26-electrolysis chamber; 27-liquid inlet; 28-liquid outlet; 29-ear; 210-mounting groove; 211-nipple; 212-positioning hole; 213-positioning column; 214-liquid inlet;

[0047] 3-handle; 4-main liquid inlet pipe; 5-branch liquid inlet pipe; 6-flow valve;

[0048] 7-rotary switch; 8-gas-liquid separator; 9-liquid outlet pipe; 10-exhaust pipe; 011-conducting wire; 012-fusion layer. DETAILED DESCRIPTION

[0049] 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 described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] The embodiment of the present invention discloses a square modular alkaline electrolytic cell without a sealing structure, comprising:

[0051] Frame 1,

[0052] The electrolytic unit 2, the frame 1 is provided with a plurality of installation cavities, and the electrolytic unit 2 is installed in the installation cavity; the electrolytic unit 2 comprises: an anode plate 21, an anode electrode 22, a diaphragm 23, a cathode electrode 24 and a cathode plate 25; an electrolytic cavity 26 is provided on the surface of the anode plate 21 and the cathode plate 25; the anode electrode 22 and the cathode electrode 24 are respectively provided in the electrolytic cavity 26 of the anode plate 21 and the cathode plate 25; the diaphragm 23 is placed between the anode electrode 22 and the cathode electrode 24; the anode plate 21 and the cathode plate 25 are provided with one side of the electrolytic cavity 26, and the anode plate 21 and the cathode plate 25 are fused into one by a hot pressing process; the surface of the anode plate 21 and the cathode plate 25 are provided with a liquid inlet 27 and a liquid outlet 28 connected to the electrolytic cavity 26. After the anode plate 21 and the cathode plate 25 are processed by the hot pressing process, a fusion layer 012 is formed at the connection.

[0053] The anode plate 21 and the cathode plate 25 are made of high-performance engineering plastics (such as PVC, PP, etc.), which have excellent thermoplasticity, high temperature resistance and corrosion resistance and are suitable for the operating environment of the electrolytic cell.

[0054] The anode electrode 22 and the cathode electrode 24 are made of special materials (such as new metal alloys or high-performance carbon materials) and are surface treated (such as plasma spraying, deposition and other processes) to enhance the catalytic performance and durability of the electrodes and ensure that no material falls off during long-term operation.

[0055] Membrane selection: Use high-performance composite ion exchange membranes with good ion conductivity and chemical stability, which can effectively isolate hydrogen and oxygen and prevent gas mixing.

[0056] In order to further optimize the above technical solution, the anode electrode 22 and the cathode electrode 24 are both provided with pole ears 29 , and the anode plate 21 and the cathode plate 25 are provided with mounting grooves 210 at positions corresponding to the pole ears 29 , and the pole ears 29 are placed in the mounting grooves 210 .

[0057] In order to further optimize the above technical solution, a nipple 211 is provided on the side wall of the electrolysis chamber 26 opposite to the anode electrode 22 or the cathode electrode 24 .

[0058] In order to further optimize the above technical solution, positioning holes 212 and positioning posts 213 are respectively provided on the sides of the anode plate 21 and the cathode plate 25 that are buckled together. When the anode plate 21 and the cathode plate 25 are buckled together, the positioning posts 213 are plugged into the positioning holes 212. A liquid inlet hole 214 is also provided on the inner wall of the electrolytic chamber 26, which is connected to the liquid inlet port 27 through the liquid inlet hole 214.

[0059] In order to further optimize the above technical solution, multiple installation cavities are distributed in an array, and an opening for installing the electrolytic unit 2 is provided at the end of the installation cavity, and a handle 3 is provided on one side of the electrolytic unit 2 located at the opening end of the installation cavity. The array-distributed installation cavity can flexibly combine the number and arrangement of the electrolytic units 2 according to actual needs, such as 1×1, 1×2, 1×n, 2×2, n×n and other forms, to meet the needs of different sites and production scales, and enhance the scalability of the equipment. The opening design at the end of the installation cavity makes the installation and replacement of the electrolytic unit more convenient. The operator can directly insert or remove the electrolytic unit from the opening without disassembling other components, thereby improving maintenance efficiency. By rationally arranging the electrolytic units 2, the overall performance of the electrolytic cell can be optimized, the electrolyte distribution between the electrolytic units 2 can be more uniform, and the operating efficiency and stability of the entire system can be improved.

[0060] In order to further optimize the above technical solution, the electrolytic cell is also provided with a liquid inlet pipe, which includes a main liquid inlet pipe 4 and a branch liquid inlet pipe 5. A flow valve 6 for detecting the flow of the branch liquid inlet pipe 5 and a rotary switch 7 for controlling the flow of the branch liquid inlet pipe 5 are provided at the connection between the branch liquid inlet pipe 5 and the main liquid inlet pipe 4; multiple liquid inlets 27 are all connected to the branch liquid inlet pipe 5.

[0061] In order to further optimize the above technical solution, the rotary switch 7 can accurately control the flow rate of the electrolyte, avoid the reduction of electrolysis efficiency or equipment damage caused by excessive or insufficient flow rate, and improve the operation stability and safety of the electrolytic cell. The rotary switch 7 adjusts the flow rate by rotating, so that the operator can conveniently adjust the flow rate manually without complex control equipment or tools, reducing the difficulty and cost of operation and improving the ease of use of the equipment. The rotary switch 7 is an existing switch, as long as it can achieve the switch of opening and closing size adjustment by rotation.

[0062] In order to further optimize the above technical solution, a gas-liquid separator 8 is connected to the liquid outlet 28 , and the gas-liquid separator 8 is connected to a liquid outlet pipe 9 and an exhaust pipe 10 .

[0063] In order to further optimize the above technical solution, the side walls of the anode plate 21 and the cathode plate 25 are provided with a slide groove 214, and the inner wall of the installation cavity is provided with a slide rail 11 at a position corresponding to the slide groove 214; the slide rail 11 is also provided with a movable buckle 12, and a slot corresponding to the movable buckle 12 is provided in the slide groove 214. A knob is provided at the position where the slide rail 11 is provided on the frame 1, and the lifting and lowering of the movable buckle 12 is controlled by turning the knob 14. When the electrolysis unit 2 needs to be locked, the movable buckle 12 is extended and the movable buckle 12 is engaged in the slot of the cathode plate 25 or the anode plate 21. When the electrolysis unit 2 needs to be taken out, the knob 14 is rotated to control the retraction of the movable buckle 12.

[0064] In order to further optimize the above technical solution, a power supply socket 13 is provided at a position on the frame 1 corresponding to the pole ear 29, and the power supply socket 13 includes: a fixed frame 131, a spring 132 and a terminal 133; the fixed frame 131 is embedded in the frame 1, the spring 132 and the terminal 133 are located in the fixed frame 131, one end of the spring 132 is connected to the fixed frame 131, and the other end is connected to the terminal 133, the pole ear 29 is inserted between the two terminals 133, and the terminal 133 is connected to the wire 011.

[0065] 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.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A square modular alkaline electrolyzer without a sealing structure, characterized in that: include: frame, An electrolysis unit, wherein the frame is provided with a plurality of mounting cavities, and the electrolysis unit is mounted in the mounting cavities; The electrolysis unit comprises: an anode plate, an anode electrode, a diaphragm, a cathode electrode and a cathode plate; the surfaces of the anode plate and the cathode plate are both provided with an electrolysis cavity; the anode electrode and the cathode electrode are respectively arranged in the electrolysis cavities of the anode plate and the cathode plate; the diaphragm is placed between the anode electrode and the cathode electrode; the anode plate and the cathode plate are provided with one side of the electrolysis cavity and are interlocked with each other, and the anode plate and the cathode plate are fused into one by a hot pressing forming process; the surfaces of the anode plate and the cathode plate are both provided with a liquid inlet and a liquid outlet connected to the electrolysis cavity.

2. The square modular alkaline electrolyzer without sealing structure according to claim 1, characterized in that: The anode electrode and the cathode electrode are both provided with pole ears, and the anode plate and the cathode plate are provided with mounting grooves at positions corresponding to the pole ears, and the pole ears are placed in the mounting grooves.

3. The square modular alkaline electrolyzer without sealing structure according to claim 1, characterized in that: A nipple is arranged on the side wall of the electrolysis chamber opposite to the anode electrode or the cathode electrode.

4. The square modular alkaline electrolyzer without sealing structure according to claim 1, characterized in that: Positioning holes and positioning posts are respectively provided on the sides of the anode plate and the cathode plate that are buckled together. When the anode plate and the cathode plate are buckled together, the positioning posts are plugged into the positioning holes.

5. A square modular alkaline electrolyzer without a sealing structure according to any one of claims 1 to 4, characterized in that: The plurality of installation cavities are distributed in an array, and an opening for installing an electrolytic unit is provided at the end of the installation cavity, and a handle is provided on one side of the electrolytic unit located at the opening end of the installation cavity.

6. The square modular alkaline electrolyzer without sealing structure according to claim 1, characterized in that: The electrolytic cell is also provided with a liquid inlet pipe, which includes a main liquid inlet pipe and a branch liquid inlet pipe. A flow valve for detecting the flow of the branch liquid inlet pipe and a rotary switch for controlling the flow of the branch liquid inlet pipe are provided at the connection between the branch liquid inlet pipe and the main liquid inlet pipe; multiple liquid inlets are connected to the branch liquid inlet pipe.

7. The square modular alkaline electrolyzer without sealing structure according to claim 1, characterized in that: The liquid outlet is connected with a gas-liquid separator, and the gas-liquid separator is connected with a liquid outlet pipe and an exhaust pipe.

8. The square modular alkaline electrolyzer without sealing structure according to claim 2, characterized in that: The side walls of the anode plate and the cathode plate are both provided with sliding grooves, and the inner wall of the installation cavity is provided with sliding rails at positions corresponding to the sliding grooves; the sliding rails are also provided with movable buckles, and the sliding grooves are provided with slots corresponding to the movable buckles.

9. The square modular alkaline electrolyzer without sealing structure according to claim 8, characterized in that: A power supply socket is arranged at a position on the frame corresponding to the pole ear, and the power supply socket comprises: a fixed frame, a spring and a terminal; the fixed frame is embedded in the frame, the spring and the terminal are located in the fixed frame, one end of the spring is connected to the fixed frame, and the other end is connected to the terminal, the pole ear is inserted between the two terminals, and the terminal is connected to the wire.

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