Water electrolysis hydrogen production system
By introducing a stirring component and a liquid delivery pump into the water electrolysis hydrogen production system, the uniformity and continuous supply of electrolyte are ensured. Combined with a drying box and a hydrogen collection tower, the problems of uneven electrolyte and low hydrogen purity are solved, achieving efficient and safe hydrogen production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-13
- Publication Date
- 2026-04-07
AI Technical Summary
Existing water electrolysis hydrogen production systems lack effective stirring components, resulting in uneven electrolyte distribution, unstable electrolyte supply, low hydrogen purity, and potential safety hazards.
A system comprising a mixing tank, a hydrolysate tank, an electrolytic cell, a drying chamber, and a hydrogen collection tower was designed. The system ensures the uniformity of the electrolyte through a stirring assembly, guarantees a continuous supply of electrolyte through a delivery pump, improves the purity of hydrogen through the drying chamber and the hydrogen collection tower, and ensures safety through a gas check valve.
It improves the uniformity of the electrolyte and the stability of the electrolysis reaction, enhances the purity and safety of hydrogen, and reduces energy consumption and operating costs.
Smart Images
Figure CN224092018U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hydrogen production technology, specifically to an electrolysis water hydrogen production system. Background Technology
[0002] An electrolytic water hydrogen production system is a device that uses the principle of electrolysis to decompose water into hydrogen and oxygen. Its basic principle is that under the action of direct current, water molecules are decomposed into hydrogen ions and hydroxide ions in an electrolytic cell. Hydrogen ions are reduced to hydrogen gas at the cathode, and hydroxide ions are oxidized to oxygen gas at the anode. With the advancement of technology, the electrolytic water hydrogen production system has broad application prospects in renewable energy coupling, chemical industry, transportation and other fields.
[0003] However, existing water electrolysis hydrogen production systems have certain shortcomings in use. They lack effective stirring components or mixing tanks, leading to uneven electrolyte distribution during electrolysis. This unevenness affects the efficiency and stability of the electrolysis reaction, thus reducing hydrogen production efficiency. Furthermore, the existing systems suffer from inadequate pipeline design, resulting in electrolyte supply interruptions or unstable flow rates, affecting the continuous progress of the electrolysis reaction. Finally, the hydrogen produced by existing systems has low purity and high impurity content, which can easily cause safety hazards during storage and use. Utility Model Content
[0004] To address the problems in the existing technology, this utility model provides a water electrolysis hydrogen production system.
[0005] The technical solution adopted by this utility model to solve its technical problem is: an electrolytic water hydrogen production system, including a mixing tank, a hydrolysate tank, an electrolytic cell, a drying oven, and a hydrogen collection tower. The mixing tank is a tank connector with a top cover. A stirring assembly is installed on the top cover of the mixing tank. The mixing tank is used to mix water and electrolyte to form an electrolyte suitable for electrolysis. The stirring assembly, driven by a stirring motor, uses a stirring rod and stirring blades to fully mix the water and electrolyte, ensuring the uniformity of the electrolyte. The stirring assembly effectively improves the uniformity of the electrolyte and avoids a decrease in electrolysis efficiency caused by uneven electrolyte distribution. A delivery pump is installed between the mixing tank and the hydrolysate tank. The pump's suction end is connected to a suction pipe, which communicates with the bottom of the mixing tank. The pump's outlet end is connected to a delivery pipe, one end of which communicates with the top of the hydrolysate tank. The delivery pump transports the electrolyte from the mixing tank to the hydrolysate tank through the suction and delivery pipes. This process replenishes the electrolyte and ensures its circulation within the system. The delivery pump ensures a continuous supply of electrolyte to the hydrolysate tank, guaranteeing the continuity of the electrolysis process. Furthermore, the pipeline delivery of the electrolyte prevents contact with the external environment, reducing the introduction of impurities. The bottom of the hydrolysate tank is connected to a drain pipe, and a supply pipe is connected to the drain pipe. The supply pipe is connected to the electrolytic cell. The hydrolysate tank stores the electrolyte and transports it to the electrolytic cell via the drain and supply pipes. The design of the hydrolysate tank provides a stable electrolyte storage and distribution link for the water electrolysis hydrogen production system. The drain and supply pipes at its bottom ensure that the electrolyte flows smoothly to the electrolytic cell, meeting the requirements of the electrolysis process. The hydrogen outlet of the electrolytic cell is connected to a hydrogen delivery pipe, which is connected to one side of the bottom of the drying box. The electrolytic cell is the core component of the water electrolysis hydrogen production system, decomposing water into hydrogen and oxygen through an electrolytic reaction. The hydrogen outlet is used to transport the generated hydrogen to the drying box. A hydrogen delivery pipe is connected to the side of the drying box near the top. The drying box effectively removes moisture from the hydrogen, improving its purity and quality. The dried hydrogen is more suitable for subsequent storage and use. One end of the hydrogen delivery pipe is connected to a hydrogen collection tower, which collects the dried hydrogen. A mixing tank and stirring assembly ensure the homogeneity of the electrolyte, while a delivery pump and pipeline guarantee a continuous supply of electrolyte. The drying chamber and hydrogen collection tower further improve the purity and quality of the hydrogen. A gas check valve is installed on the hydrogen delivery pipe. The design of the hydrogen delivery pipe and the gas check valve further ensures stable hydrogen delivery and system safety, and the gas check valve prevents hydrogen backflow.
[0006] Preferably, the outer wall of the mixing tank is provided with a water inlet and a liquid inlet, both of which are connected to the interior of the mixing tank.
[0007] Preferably, the stirring assembly includes a stirring motor and a stirring rod. The stirring motor is vertically mounted at the top center of the top cover of the mixing tank, and the stirring rod is rotatably fitted at the bottom center of the top cover of the mixing tank, with the stirring rod located inside the mixing tank. A drive shaft connects the stirring rod and the stirring motor, and several stirring blades are provided on the stirring rod. The stirring assembly drives the stirring rod and stirring blades through the stirring motor to fully mix water and electrolyte, forming a uniform electrolyte solution, providing a suitable medium for the subsequent electrolysis process. The presence of the stirring assembly greatly improves the uniformity of the electrolyte solution.
[0008] Preferably, the top of the hydrolysate tank is provided with a cleaning port. The design of the cleaning port facilitates the cleaning and maintenance of the inside of the hydrolysate tank and can effectively prevent the accumulation of impurities in the electrolyte. The end of the drain pipe away from the hydrolysate tank is provided with a drain outlet, and the drain outlet is provided with a removable sealing cap.
[0009] Preferably, the drying chamber has a box structure with openings at both ends. A top plate is horizontally installed on the top of the drying chamber, and a bottom plate is horizontally installed on the bottom of the drying chamber. Several fastening screws are connected between the top plate and the bottom plate, and nuts are threaded onto both ends of the fastening screws. Several layers of drying filter are horizontally installed inside the drying chamber. Through multiple layers of drying filter, the drying chamber can effectively remove moisture from hydrogen. The detachable structure of the drying chamber facilitates the maintenance and cleaning of the system.
[0010] Preferably, a hydrogen output pipe is connected to the bottom of the hydrogen collection tower, and a pressurizing pump is connected to the end of the hydrogen output pipe away from the hydrogen collection tower. The hydrogen collection tower can stably collect the dried hydrogen and deliver it to the pressurizing pump through the hydrogen output pipe. The function of the pressurizing pump is to pressurize the hydrogen to a higher pressure.
[0011] The beneficial effects of this utility model are:
[0012] (1) The water electrolysis hydrogen production system described in this utility model achieves efficient mixing, transportation and electrolysis reaction of electrolyte by rationally designing the structure and function of each component. The mixing tank and stirring assembly ensure the uniformity of electrolyte, the liquid delivery pump and pipeline ensure the continuous supply of electrolyte, and the drying box and hydrogen collection tower further improve the purity and quality of hydrogen. These designs work together to significantly improve the hydrogen production efficiency.
[0013] (2) The electrolysis hydrogen production system of the present invention has a stirring component that can mix the electrolyte, thereby reducing the non-uniformity of the electrolyte and reducing the energy consumption during the electrolysis process. The multi-layer drying filter of the drying box improves the drying efficiency of hydrogen and reduces the energy demand for subsequent processing, thereby making the system significantly reduce energy consumption when producing the same volume of hydrogen.
[0014] (3) The water electrolysis hydrogen production system described in this utility model effectively removes moisture and impurities from hydrogen through the multi-layer drying filter layer of the drying box and the pressurization process of the pressurization pump after the hydrogen collection tower. The purity and quality of hydrogen are significantly improved, and the high-purity hydrogen is more suitable for subsequent storage and use, reducing safety hazards caused by impurities. Attached Figure Description
[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0016] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the water electrolysis hydrogen production system provided by this utility model.
[0017] Figure 2 This is a schematic diagram of the stirring assembly structure of this utility model.
[0018] Figure 3 for Figure 1 Enlarged view of details in area A.
[0019] Figure 4 This is a cross-sectional view of the drying oven of this utility model.
[0020] In the diagram: 1. Mixing tank; 101. Water inlet; 102. Liquid inlet; 2. Stirring assembly; 201. Stirring motor; 202. Stirring rod; 203. Stirring blades; 3. Liquid delivery pump; 301. Liquid extraction pipe; 302. Liquid delivery pipe; 4. Hydrolysate tank; 401. Cleaning port; 402. Liquid drain pipe; 403. Liquid supply pipe; 404. Liquid outlet; 5. Electrolytic cell; 501. Hydrogen delivery pipe; 6. Drying oven; 601. Top plate; 602. Bottom plate; 603. Drying filter layer; 604. Fastening screw; 605. Hydrogen delivery pipe; 606. Gas check valve; 7. Hydrogen collection tower; 701. Hydrogen output pipe; 8. Pressure pump. Detailed Implementation
[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0022] like Figures 1-4As shown, the electrolytic water hydrogen production system of this utility model includes a mixing tank 1, a hydrolysate tank 4, an electrolytic cell 5, a drying oven 6, and a hydrogen collection tower 7. The mixing tank 1 is a tank with a lid. A stirring assembly 2 is installed on the lid of the mixing tank 1. The mixing tank 1 is used to mix water and electrolyte to form an electrolyte suitable for electrolysis. The stirring assembly 2 is driven by a stirring motor 201 to drive a stirring rod 202 and stirring blades 203, ensuring thorough mixing of water and electrolyte and guaranteeing the uniformity of the electrolyte. The stirring assembly 2 effectively improves the uniformity of the electrolyte, avoiding the decrease in electrolysis efficiency caused by uneven electrolyte distribution. A uniform electrolyte helps improve the current efficiency of the electrolytic cell 5, reduces energy consumption, and extends the service life of the electrolytic cell 5. A delivery pump 3 is installed between the mixing tank 1 and the hydrolysate tank 4. The pump 3 has a suction pipe 301 connected to its suction end, which is connected to the bottom of the mixing tank 1. The pump 3 also has a delivery pipe 302 connected to its outlet end, which is connected to the top of the hydrolysate tank 4. The pump 3 delivers the electrolyte from the mixing tank 1 to the hydrolysate tank 4 through the suction pipe 301 and the delivery pipe 302. This process replenishes the electrolyte and ensures its circulation within the system. The delivery pump 3 ensures a continuous supply of electrolyte to the hydrolysate tank 4, guaranteeing the continuity of the electrolysis process. In actual operation, a stable supply of electrolyte is crucial for maintaining the normal operation of electrolytic cell 5. An interruption or instability in the electrolyte supply will lead to insufficient electrolyte in the cell, affecting the electrolytic reaction and potentially damaging the cell. The electrolyte delivery pump 3 ensures that the electrolyte is delivered to the electrolyte tank 4 at a constant flow rate, reducing electrolyte loss and waste during transport. Furthermore, transporting the electrolyte through pipelines avoids contact with the external environment, reducing the introduction of impurities and improving electrolyte purity. This design not only improves the overall efficiency of the system but also enhances its reliability and stability, reduces downtime caused by electrolyte supply issues, and lowers operating costs. The bottom of the hydrolysate tank 4 is connected to a drain pipe 402, and a supply pipe 403 is connected to the drain pipe 402. The supply pipe 403 is connected to the electrolytic cell 5. The hydrolysate tank 4 is used to store the electrolyte and transport the electrolyte to the electrolytic cell 5 through the drain pipe 402 and the supply pipe 403. The design of the hydrolysate tank 4 provides a stable electrolyte storage and distribution link for the water electrolysis hydrogen production system. The drain pipe 402 and the supply pipe 403 at the bottom ensure that the electrolyte can flow smoothly to the electrolytic cell 5 to meet the needs of the electrolysis process.In actual operation, the storage and distribution of electrolyte are crucial to the stability and efficiency of the entire system. The presence of the electrolyte tank 4 buffers the electrolyte supply between the mixing tank 1 and the electrolytic cell 5, preventing supply interruptions or excessive overflows caused by a mismatch between the electrolyte preparation rate of the mixing tank 1 and the electrolysis rate of the electrolytic cell 5. The hydrogen outlet of the electrolytic cell 5 is connected to a hydrogen delivery pipe 501, which is connected and runs through the bottom side of the drying chamber 6. The electrolytic cell 5 is the core component of the water electrolysis hydrogen production system, which decomposes water into hydrogen and oxygen through an electrolysis reaction. The hydrogen outlet is used to transport the generated hydrogen to the drying chamber 6. A hydrogen delivery pipe 605 is connected to the side of the drying chamber 6 near the top. The drying chamber 6 can effectively remove moisture from the hydrogen, improving the purity and quality of the hydrogen. The dried hydrogen is more suitable for subsequent storage and use. One end of the hydrogen delivery pipe 605 is connected to the hydrogen collection tower 7, which collects the dried hydrogen. The mixing tank 1 and the stirring assembly 2 ensure the uniformity of the electrolyte, while the delivery pump 3 and pipelines ensure a continuous supply of electrolyte. The drying chamber 6 and the hydrogen collection tower 7 further improve the purity and quality of the hydrogen. These designs work together to significantly improve hydrogen production efficiency. A gas check valve 606 is installed on the hydrogen delivery pipe 605. The design of the hydrogen delivery pipe 605 and the gas check valve 606 further ensures stable hydrogen delivery and system safety. The gas check valve 606 prevents hydrogen backflow, avoiding equipment damage or safety accidents caused by backflow.
[0023] In one optional embodiment of this example, the outer wall of the mixing tank 1 is provided with a water inlet 101 and a liquid inlet 102. Both the water inlet 101 and the liquid inlet 102 are connected to the inside of the mixing tank 1. Water is added through the water inlet 101 and electrolyte is added through the liquid inlet 102.
[0024] In one optional embodiment of this example, the stirring assembly 2 includes a stirring motor 201 and a stirring rod 202. The stirring motor 201 is vertically mounted at the top center of the upper cover of the mixing tank 1. The stirring rod 202 is rotatably fitted at the bottom center of the upper cover of the mixing tank 1 and is located inside the mixing tank 1. A drive shaft connects the stirring rod 202 and the stirring motor 201. Several stirring blades 203 are provided on the stirring rod 202. The stirring assembly 2 drives the stirring rod 202 and the stirring blades 203 through the stirring motor 201 to fully mix water and electrolyte, forming a uniform electrolyte solution. This provides a suitable medium for the subsequent electrolysis process. The presence of the stirring assembly 2 greatly improves the uniformity of the electrolyte solution. During the electrolysis process, the uniform distribution of the electrolyte is crucial for electrolysis efficiency. Uneven electrolyte distribution leads to uneven current density distribution in electrolyzer 5, reducing electrolysis efficiency, increasing energy consumption, and potentially causing localized overheating or corrosion. Stirring component 2 uses mechanical stirring to evenly disperse the electrolyte in the water, ensuring consistent conductivity of the electrolyte. This not only improves the current efficiency of electrolyzer 5 but also reduces energy consumption increases caused by excessively high or low electrolyte concentrations. Furthermore, a uniform electrolyte extends the service life of electrolyzer 5, as uneven electrolyte distribution can lead to localized corrosion or scaling within the electrolyzer 5, affecting its long-term stability. Through the optimized design of stirring component 2, mixing tank 1 can efficiently prepare the electrolyte, providing high-quality raw materials for the entire water electrolysis hydrogen production system, thereby significantly improving the overall performance and economy of the system.
[0025] In one optional embodiment of this example, a cleaning port 401 is provided on the top of the hydrolysate tank 4. The design of the cleaning port 401 facilitates the cleaning and maintenance of the inside of the hydrolysate tank 4 and can effectively prevent the accumulation of impurities in the electrolyte. The accumulation of impurities not only affects the purity of the electrolyte, but may also lead to a decrease in the conductivity of the electrolyte in the electrolytic cell 5, thereby reducing the electrolysis efficiency and increasing energy consumption. By regularly cleaning the hydrolysate tank 4, the quality of the electrolyte and the long-term stable operation of the system can be ensured. This design not only improves the reliability of the system, but also reduces equipment failures and maintenance costs caused by the accumulation of impurities, and extends the service life of the system. A drain port 404 is provided at the end of the drain pipe 402 away from the hydrolysate tank 4, and a removable sealing cover is provided inside the drain port 404. After the system is used, the electrolyte in the hydrolysate tank 4 can be discharged by removing the sealing cover of the drain port 404.
[0026] In one optional embodiment of this example, the drying chamber 6 is a box structure with openings at both ends. A top plate 601 is horizontally arranged on the top of the drying chamber 6, and a bottom plate 602 is horizontally arranged on the bottom of the drying chamber 6. Several fastening screws 604 are connected between the top plate 601 and the bottom plate 602, and nuts are threaded onto both ends of the fastening screws 604. Several layers of drying filter layers 603 are horizontally arranged inside the drying chamber 6. Through the multiple layers of drying filter layers 603, the drying chamber 6 can effectively remove moisture from hydrogen, improve the purity and quality of hydrogen, and make the dried hydrogen more suitable for subsequent storage and use, because the presence of moisture will not only reduce the calorific value of hydrogen, but may also cause corrosion of storage equipment. The detachable structure of the drying chamber 6 facilitates the maintenance and cleaning of the system, reduces downtime caused by equipment failure, and improves the stability and reliability of the system.
[0027] In an optional embodiment of this invention, a hydrogen collection tower 7 is connected to a hydrogen output pipe 701 at its bottom. A pressure pump 8 is connected to the end of the hydrogen output pipe 701 furthest from the hydrogen collection tower 7. The hydrogen collection tower 7 can stably collect dried hydrogen and deliver it to the pressure pump 8 through the hydrogen output pipe 701. The pressure pump 8 pressurizes the hydrogen to a higher pressure, thereby increasing the hydrogen storage density and transportation efficiency. In practical applications, the storage and transportation costs of hydrogen are one of the important factors restricting its widespread application. Pressurizing hydrogen to a higher pressure through the pressure pump 8 can significantly reduce the storage space requirement and lower transportation costs. Furthermore, pressurized hydrogen is more suitable for applications such as fuel cells, as these applications typically require hydrogen at higher pressures. The design of the hydrogen collection tower 7 can also buffer the hydrogen collection and transportation process, ensuring that hydrogen can be stably delivered to the pressure pump 8, avoiding equipment damage or hydrogen leakage due to pressure fluctuations. This design not only improves the overall efficiency of the system but also enhances the system's economy and safety, reducing operating costs and risks.
[0028] In use, firstly, water is added to the mixing tank 1 through the water inlet 101, and electrolyte is added through the liquid inlet 102. The stirring assembly 2 is then started, and the stirring motor 201 drives the stirring rod 202 and stirring blades 203 to rotate, ensuring thorough mixing of the water and electrolyte to form a uniform electrolyte solution. The stirring process ensures complete dissolution and uniform distribution of the electrolyte, providing a suitable electrolyte solution for subsequent electrolysis reactions. The liquid delivery pump 3 is then started, and the liquid extraction pipe 301 draws the mixed electrolyte from the bottom of the mixing tank 1. Through the liquid delivery pipe 302, the electrolyte is transported to the top of the electrolyte tank 4. The electrolyte tank 4 stores the electrolyte, ensuring a stable supply in the system. The cleaning port 401 of the electrolyte tank 4 can be used for periodic cleaning of impurities to maintain the purity of the electrolyte. Then, the drain pipe 402 at the bottom of the electrolyte tank 4 discharges the electrolyte, which is then transported to the electrolytic cell 5 through the liquid supply pipe 403. The electrolytic cell 5 is used for the electrolysis of water. The core component of the hydrogen production system is the electrolyte, which decomposes water into hydrogen and oxygen through an electrolytic reaction in the electrolytic cell 5. The hydrogen produced is delivered to the drying chamber 6 via the hydrogen outlet of the electrolytic cell 5 through the hydrogen delivery pipe 501. Oxygen is usually discharged from the system through another pipe or collected and processed as needed. The multi-layer drying filter layer 603 in the drying chamber 6 dries the hydrogen to remove moisture, ensuring the purity and quality of the hydrogen. Finally, the hydrogen processed by the drying chamber 6 is delivered to the hydrogen collection tower 7 through the hydrogen delivery pipe 605. The gas one-way valve 606 installed on the hydrogen delivery pipe 605 ensures unidirectional flow of hydrogen, prevents hydrogen backflow, and ensures the safety and stability of the system. The hydrogen collection tower 7 is used to collect the dried hydrogen and deliver it to the pressurization pump 8 through the hydrogen output pipe 701. The pressurization pump 8 pressurizes the hydrogen to a high-pressure state suitable for storage and transportation, improving the storage density and transportation efficiency of the hydrogen.
[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A water electrolysis hydrogen production system, comprising a mixing tank (1), a hydrolysate tank (4), an electrolyzer (5), a drying oven (6), and a hydrogen collection tower (7), characterized in that: The mixing tank (1) is a tank with a top cover. A stirring assembly (2) is installed on the top cover of the mixing tank (1). A delivery pump (3) is provided between the mixing tank (1) and the hydrolysate tank (4). The pumping end of the delivery pump (3) is connected to a suction pipe (301). The suction pipe (301) is connected to the bottom of the mixing tank (1). The outlet end of the delivery pump (3) is connected to a delivery pipe (302). One end of the delivery pipe (302) is connected to the top of the hydrolysate tank (4). A drain pipe (40) is connected to the bottom of the hydrolysate tank (4). 2) A liquid supply pipe (403) is connected to the drain pipe (402). The liquid supply pipe (403) is connected to the electrolytic cell (5). The hydrogen outlet of the electrolytic cell (5) is connected to a hydrogen delivery pipe (501). The hydrogen delivery pipe (501) is connected to one side of the bottom of the drying box (6). The side of the drying box (6) near the top is connected to a hydrogen conveying pipe (605). One end of the hydrogen conveying pipe (605) is connected to the hydrogen collection tower (7). A gas check valve (606) is installed on the hydrogen conveying pipe (605).
2. The water electrolysis hydrogen production system according to claim 1, characterized in that: The outer wall of the mixing tank (1) is provided with a water inlet (101) and a liquid inlet (102), and both the water inlet (101) and the liquid inlet (102) are connected to the inside of the mixing tank (1).
3. The water electrolysis hydrogen production system according to claim 1, characterized in that: The stirring assembly (2) includes a stirring motor (201) and a stirring rod (202). The stirring motor (201) is vertically installed at the top center of the top cover of the mixing tank (1). The stirring rod (202) is rotatably fitted at the bottom center of the top cover of the mixing tank (1). The stirring rod (202) is located inside the mixing tank (1). A drive shaft is connected between the stirring rod (202) and the stirring motor (201). Several stirring blades (203) are provided on the stirring rod (202).
4. The water electrolysis hydrogen production system according to claim 1, characterized in that: The top of the hydrolysate tank (4) is provided with a cleaning port (401), and the end of the drain pipe (402) away from the hydrolysate tank (4) is provided with a drain port (404), and the drain port (404) is provided with a removable sealing cover.
5. The water electrolysis hydrogen production system according to claim 1, characterized in that: The drying box (6) is a box structure with openings at both ends. The top of the drying box (6) is horizontally provided with a top plate (601) and the bottom of the drying box (6) is horizontally provided with a bottom plate (602). Several fastening screws (604) are connected between the top plate (601) and the bottom plate (602), and nuts are threaded on both ends of the fastening screws (604). Several layers of drying filter (603) are horizontally provided inside the drying box (6).
6. The water electrolysis hydrogen production system according to claim 1, characterized in that: The bottom of the hydrogen collection tower (7) is connected to a hydrogen output pipe (701), and the end of the hydrogen output pipe (701) away from the hydrogen collection tower (7) is connected to a pressure pump (8).