Square electrolytic bath for producing hydrogen by electrolyzing water

Abstract

The invention discloses a square electrolytic bath for producing hydrogen by electrolyzing water, which belongs to the technical field of electrolytic baths and comprises an electrolytic bath support frame, a first cross beam and a second cross beam are respectively bolted on two sides of the electrolytic bath support frame, an anode limiting frame is bolted on the surface of the first cross beam, and a cathode limiting frame is bolted on the surface of the second cross beam. A pressing structure is arranged on the cathode limiting frame, a gas-liquid header pipe and a liquid inlet header pipe are arranged on the outer side wall of the electrolytic cell supporting frame, an electrolytic cell assembly is arranged in an inner cavity of the electrolytic cell supporting frame, and the electrolytic cell assembly is connected with the gas-liquid header pipe and the liquid inlet header pipe through a gas-liquid hose and a liquid inlet hose. The electrolytic bath supporting frame is formed by welding the mounting bottom plate, the header pipe mounting plate, the mounting frame, the longitudinal beam and the tensioning device used for tensioning the electrolytic bath, so that convenience is provided for the mounting work of the electrolytic bath, accessories in the electrolytic bath can be disassembled and assembled, the overall repair work is avoided, and convenience is provided for the transportation work of the electrolytic bath.

Description

Technical Field

[0001] The present invention relates to the technical field of electrolytic cells, and particularly to a square electrolytic cell for hydrogen production by electrolyzing water. Background Art

[0002] Hydrogen production by electrolyzing water is a relatively convenient method for producing hydrogen. When direct current is passed through an electrolytic cell filled with electrolyte solution, water molecules undergo electrochemical reactions on the electrodes and decompose into hydrogen and oxygen. When electrolyzing water, since the ionization degree of pure water is very small and its conductivity is low, which belongs to a typical weak electrolyte, it is necessary to add the aforementioned electrolyte to increase the conductivity of the solution so that water can be smoothly electrolyzed into hydrogen and oxygen.

[0003] Existing electrolytic cells are usually assembled from integral parts, resulting in a relatively large overall size of the electrolytic cell. During installation, large hoisting equipment is required for installation work. At the same time, when electrolytic cell accessories are damaged, they cannot be disassembled and need to be returned to the factory for overall repair, which brings inconvenience to the repair work of the electrolytic cell.

[0004] According to an electrolytic cell for alkaline water electrolysis hydrogen production provided by the publication number: CN220335314U, which includes end pressing plates, bipolar plates, and nickel meshes. A plurality of bipolar plates are symmetrically installed inside the end pressing plates. Nickel meshes are symmetrically installed on both sides of the bipolar plates. A PPS diaphragm is installed on one side of the nickel mesh. A flow distribution baffle is installed on the bottom inner wall of the bipolar plate. A sealing gasket is installed on one side of the bipolar plate. In the present invention, the flow mode of the alkali solution flowing from both side end pressing plates to the inner middle bipolar plates at the same time reduces the flow distance of the alkali solution, enables the alkali solution to be evenly distributed into the grooves on both sides of the bipolar plates, avoids problems such as excessive pressure drop due to too long a tank body, can ensure that the alkali solution is evenly distributed into the electrolysis compartments, so that the temperature difference in the electrolysis compartments is not so large, the electrolytic cell can operate stably, and the electrolysis temperature is carried out at an appropriate temperature, and the diaphragm will not be damaged due to too high a temperature, resulting in the risk of hydrogen-oxygen intermixing in the electrolysis compartments.

[0005] According to the above-described electrolytic cell, it is usually assembled integrally, resulting in a relatively large overall size of the electrolytic cell. During installation, large hoisting equipment is required for installation work. At the same time, when electrolytic cell accessories are damaged, they cannot be disassembled and need to be returned to the factory for overall repair, which brings inconvenience to the repair work of the electrolytic cell. Therefore, we need to propose a square electrolytic cell for hydrogen production by electrolyzing water. Summary of the Invention

[0006] The purpose of the present invention is to provide a square electrolytic cell for hydrogen production by electrolyzing water. Through the settings of the electrolytic cell support frame, anode limiting frame, cathode limiting frame, and electrolytic cell assembly, the integrated setting of the electrolytic cell is avoided, and the parts inside the electrolytic cell are modularly set, enabling the installation and disassembly of the fittings inside the electrolytic cell. Thus, it is not necessary to cooperate with large hoisting equipment for installation work during installation, which provides convenience for the installation work of the electrolytic cell, allows the fittings inside the electrolytic cell to be disassembled and assembled, avoids the overall repair work, and provides convenience for the micro-operation of the electrolytic cell, so as to solve the problems raised in the above background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A square electrolytic cell for hydrogen production by electrolyzing water, including an electrolytic cell support frame. On both sides of the electrolytic cell support frame, a first cross beam and a second cross beam are respectively bolted. On the surface of the first cross beam, an anode limiting frame is bolted. On the surface of the second cross beam, a cathode limiting frame is bolted. A pressing structure for pressing the electrolytic cell is arranged on the cathode limiting frame. On the outer side walls of the electrolytic cell support frame, a gas-liquid main pipe and a liquid inlet main pipe are respectively arranged. Inside the cavity of the electrolytic cell support frame, an electrolytic cell assembly is arranged. The electrolytic cell assembly is respectively connected to the gas-liquid main pipe and the liquid inlet main pipe through gas-liquid hoses and liquid inlet hoses. There are two groups of the electrolytic cell assemblies, and the two groups of electrolytic cell assemblies are symmetrically distributed inside the cavity of the electrolytic cell support frame. The electrolytic cell support frame is welded by an installation base plate, a main pipe installation plate, an installation frame, longitudinal beams, and a tensioning device for tensioning the electrolytic cell.

[0008] Preferably, on both sides at the bottom ends of the first cross beam and the second cross beam, reinforcing columns are bolted, and the other ends of the reinforcing columns are bolted to the inner side walls of the installation frame.

[0009] Preferably, the electrolytic cell assembly is assembled by an anode side pressing plate, an anode end electrolytic cell, a bipolar electrolytic cell, a cathode end electrolytic cell, and a cathode side pressing plate.

[0010] Preferably, the pressing structure is composed of a tensioning screw, a large nut, a pressing sleeve, a positioning ring, a disc spring, and a fixing ring, and the pressing sleeve is welded on the cathode limiting frame.

[0011] Preferably, the gas-liquid main pipe is installed on the outer side wall of the electrolytic cell support frame through a first U-shaped pipe, and the liquid inlet main pipe is installed on the outer side wall of the electrolytic cell support frame through a second U-shaped pipe. Insulating pads are arranged between the first U-shaped pipe and the second U-shaped pipe and the electrolytic cell support frame.

[0012] Preferably, connection ports are arranged on the surface of the gas-liquid main pipe, the inner cavity of the connection ports is communicated with one end of the liquid inlet hose, and several groups of connection ports are arranged.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The present invention provides a square electrolytic cell for hydrogen production by electrolyzing water. Through the settings of the electrolytic cell support frame, anode limiting frame, cathode limiting frame, and electrolytic cell components, the integrated setting of the electrolytic cell is avoided, and the parts inside the electrolytic cell are modularly arranged, enabling the installation and disassembly of the fittings inside the electrolytic cell. Thus, it is not necessary to cooperate with large hoisting equipment for installation work, which provides convenience for the installation of the electrolytic cell. The fittings inside the electrolytic cell can be disassembled and assembled, avoiding overall repair work and providing convenience for the transportation of the electrolytic cell.

[0015] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification or will be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0017] Figure 2 is a schematic structural diagram of the electrolytic cell support frame of the present invention;

[0018] Figure 3 is a schematic structural diagram of the pressing structure of the present invention.

[0019] In the figure: 1, the first cross beam; 2, the second cross beam; 3, the anode limiting frame; 4, the cathode limiting frame; 5, the pressing structure; 51, the tension screw; 52, the large nut; 53, the pressing sleeve; 54, the positioning ring; 55, the disc spring; 56, the fixing ring; 6, the gas-liquid main pipe; 7, the liquid inlet main pipe; 8, the gas-liquid hose; 9, the liquid inlet hose; 10, the mounting base plate; 11, the main pipe mounting plate; 12, the mounting frame; 13, the longitudinal beam; 14, the tension device; 15, the strengthening column; 16, the anode side pressing plate; 17, the anode end electrolytic cell; 18, the bipolar electrolytic cell; 19, the cathode end electrolytic cell; 20, the cathode side pressing plate; 21, the first U-shaped pipe; 22, the second U-shaped pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 - 3, the present invention provides a square electrolyzer for hydrogen production by electrolyzing water, which includes an electrolyzer support frame. On both sides of the electrolyzer support frame, a first cross beam 1 and a second cross beam 2 are respectively bolted. On the surface of the first cross beam 1, an anode limiting frame 3 is bolted. On the surface of the second cross beam 2, a cathode limiting frame 4 is bolted. A pressing structure 5 for pressing the electrolyzer is arranged on the cathode limiting frame 4. On the outer side walls of the electrolyzer support frame, a gas-liquid main pipe 6 and a liquid inlet main pipe 7 are respectively arranged. Inside the cavity of the electrolyzer support frame, an electrolyzer assembly is arranged. The electrolyzer assembly is respectively connected to the gas-liquid main pipe 6 and the liquid inlet main pipe 7 through a gas-liquid hose 8 and a liquid inlet hose 9. There are two groups of electrolyzer assemblies, and the two groups of electrolyzer assemblies are symmetrically distributed in the cavity of the electrolyzer support frame. The electrolyzer support frame is welded by an installation base plate 10, a main pipe installation plate 11, an installation frame 12, a longitudinal beam 13, and a tensioning device 14 for tensioning the electrolyzer.

[0022] Through the settings of the electrolyzer support frame, the anode limiting frame 3, the cathode limiting frame 4, and the electrolyzer assembly, the integrated setting of the electrolyzer is avoided, and the parts inside the electrolyzer are modularly set, so that the accessories inside the electrolyzer can be installed and disassembled. Thus, it is not necessary to cooperate with large lifting equipment for installation work during installation, which provides convenience for the installation work of the electrolyzer. The accessories inside the electrolyzer can be disassembled and assembled, avoiding the overall repair work and providing convenience for the micro-operation of the electrolyzer.

[0023] On both sides of the bottom ends of the first cross beam 1 and the second cross beam 2, strengthening columns 15 are respectively bolted. The other ends of the strengthening columns 15 are bolted to the inner side walls of the installation frame 12. Through the setting of the strengthening columns 15, support is provided between the first cross beam 1 and the second cross beam 2 and the installation frame 12, improving the stability of the first cross beam 1 and the second cross beam 2 on the installation frame 12.

[0024] The electrolyzer assembly is assembled by an anode side pressing plate 16, an anode end electrolyzer 17, a bipolar electrolyzer 18, a cathode end electrolyzer 19, and a cathode side pressing plate 20. Through the cooperation of the anode side pressing plate 16, the anode end electrolyzer 17, the bipolar electrolyzer 18, the cathode end electrolyzer 19, and the cathode side pressing plate 20, the accessories inside the electrolyzer are modularly set.

[0025] The pressing structure 5 is composed of a tensioning screw 51, a large nut 52, a pressing sleeve 53, a positioning ring 54, a disc spring 55, and a fixing ring 56. The pressing sleeve 53 is welded on the cathode limiting frame 4. After installation, the large nut 52 is loosened, and the tensioning screw 51 is adjusted to move forward. At this time, due to deformation, the disc spring 55 pushes the fixing ring 56 to press the cathode limiting frame 4 to achieve the purpose of pressing the entire electrolyzer.

[0026] The gas-liquid main pipe 6 is installed on the outer side wall of the electrolytic cell support frame through the first U-shaped pipe 21, and the liquid inlet main pipe 7 is installed on the outer side wall of the electrolytic cell support frame through the second U-shaped pipe 22. Insulating pads are provided between the first U-shaped pipe 21 and the second U-shaped pipe 22 and the electrolytic cell support frame. The gas-liquid main pipe 6 and the liquid inlet main pipe 7 are installed on the electrolytic cell support frame through the first U-shaped pipe 21 and the second U-shaped pipe 22. Through the setting of the insulating pads, the current is prevented from being transmitted to the electrolytic cell support frame, ensuring that the entire electrolytic cell support frame is not charged.

[0027] Connection ports are provided on the surface of the gas-liquid main pipe 6. There are several groups of connection ports. The inner cavity of the connection ports is communicated with one end of the liquid inlet hose 9. Through the setting of the connection ports, the connection range between the liquid inlet hose 9 and the gas-liquid main pipe 6 that can be connected is increased.

[0028] During specific use: During installation, first install the electrolytic cell support frame, and then install the first cross beam 1 and the second cross beam 2 on the electrolytic cell support frame through relevant standard parts. After installation, install the reinforcing column 15 to improve the overall rigidity of the entire electrolytic cell support frame. The anode limiting frame 3 is fixed on the first cross beam 1 with standard parts and then the electrolytic cell assembly is installed with a hoisting device. Use a steel chain to tighten relevant parts through the tensioning device 14, and then install the cathode limiting frame 4. In the initial state of the pressing structure 5, the disc spring 55 is in a flattened state. When the above parts are installed, loosen the large nut 52 and adjust the tensioning screw 51 to move forward. At this time, the disc spring 55 deforms to push the fixing ring 56 to press the cathode limiting frame 4 to achieve the purpose of pressing the entire electrolytic cell. Then use the first U-shaped pipe 21 and the second U-shaped pipe 22 to install the liquid inlet main pipe 7 and the gas-liquid main pipe 6, and insulating pads need to be placed at the corresponding positions to ensure that the entire electrolytic cell support frame is not charged. Finally, install the gas-liquid hose 8 and the liquid inlet hose 9 to complete the installation of the entire square electrolytic cell, thus avoiding the need to cooperate with large hoisting equipment for installation work during installation, providing convenience for the installation work of the electrolytic cell, enabling the disassembly and assembly of the accessories inside the electrolytic cell, avoiding overall repair work, and providing convenience for the transportation work of the electrolytic cell.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A square electrolyzer for hydrogen production by electrolyzing water, comprising an electrolyzer support frame, characterized in that: On both sides of the electrolytic cell support frame, a first cross beam (1) and a second cross beam (2) are respectively bolted. On the surface of the first cross beam (1), an anode limiting frame (3) is bolted. On the surface of the second cross beam (2), a cathode limiting frame (4) is bolted. A pressing structure (5) for pressing the electrolytic cell is arranged on the cathode limiting frame (4). On the outer side walls of the electrolytic cell support frame, a gas-liquid main pipe (6) and a liquid inlet main pipe (7) are respectively arranged. An electrolytic cell assembly is arranged in the inner cavity of the electrolytic cell support frame. The electrolytic cell assembly is respectively connected to the gas-liquid main pipe (6) and the liquid inlet main pipe (7) through a gas-liquid hose (8) and a liquid inlet hose (9). There are two groups of the electrolytic cell assemblies, and the two groups of the electrolytic cell assemblies are symmetrically distributed in the inner cavity of the electrolytic cell support frame. The electrolytic cell support frame is welded by an installation bottom plate (10), a main pipe installation plate (11), an installation frame (12), a longitudinal beam (13), and a tensioning device (14) for tensioning the electrolytic cell.

2. The square electrolyzer for hydrogen production by electrolyzing water according to claim 1, wherein: On both sides of the bottom ends of the first cross beam (1) and the second cross beam (2), reinforcing columns (15) are respectively bolted, and the other ends of the reinforcing columns (15) are bolted to the inner side walls of the installation frame (12).

3. The square electrolytic cell for hydrogen production by electrolyzing water according to claim 1, characterized in that: The electrolytic cell assembly is assembled by an anode side pressing plate (16), an anode end electrolytic cell (17), a bipolar electrolytic cell (18), a cathode end electrolytic cell (19), and a cathode side pressing plate (20).

4. The square electrolytic cell for hydrogen production by electrolyzing water according to claim 1, wherein: The pressing structure (5) is composed of a tensioning screw (51), a large nut (52), a pressing sleeve (53), a positioning ring (54), a disc spring (55), and a fixing ring (56), and the pressing sleeve (53) is welded on the cathode limiting frame (4).

5. A square electrolyzer for hydrogen production by electrolyzing water according to claim 1, characterized in that: The gas-liquid main pipe (6) is installed on the outer side wall of the electrolytic cell support frame through a first U-shaped pipe (21), and the liquid inlet main pipe (7) is installed on the outer side wall of the electrolytic cell support frame through a second U-shaped pipe (22). Insulating pads are arranged between the first U-shaped pipe (21) and the second U-shaped pipe (22) and the electrolytic cell support frame.

6. The square electrolytic cell for hydrogen production by electrolyzing water according to claim 1, characterized in that: A connection port is arranged on the surface of the gas-liquid main pipe (6), and the inner cavity of the connection port is communicated with one end of the liquid inlet hose (9), and there are several groups of the connection ports.

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