Modular water electrolysis hydrogen generation plant

Abstract

The application discloses a kind of modular water electrolysis hydrogen production equipment, including multiple water electrolysis hydrogen production modules, first end plate device and second end plate device, water electrolysis hydrogen production module, first end plate device and second end plate device can be detachably connected between, each water electrolysis hydrogen production module includes hydrogen production module body and module base, the side of hydrogen production module body is provided with three male joint devices, the other side of hydrogen production module body is provided with three female joint devices, three male joint devices and three female joint devices are respectively corresponding with water supply channel, hydrogen channel and oxygen channel in hydrogen production module body one to one, male joint device includes conical sealing ring and spring, female joint device includes hollow conical washer.The equipment of the application is not limited by processing capacity and is easy to install, and has good sealing effect.

Description

Technical Field

[0001] This invention relates to a water electrolysis hydrogen production device, and more particularly to a modular water electrolysis hydrogen production device, belonging to the field of hydrogen energy technology. Background Technology

[0002] Hydrogen energy, as a green and clean energy source, produces only water upon combustion without any polluting gases, making it one of the most valued green energy sources. Currently, there are multiple methods for hydrogen production, but water electrolysis is the most environmentally friendly method, as other methods generate pollutants to varying degrees. Existing water electrolysis hydrogen production equipment mainly consists of an anode plate, a cathode plate, and a proton exchange membrane. To increase the production power, multiple anode plates, cathode plates, and proton exchange membranes are alternately stacked and then fixedly connected by multiple long screws to form a complete water electrolysis hydrogen production system. Because the electrode plates are connected entirely by the locking force of the long screws, and ensuring a tight seal between the plates requires high precision in the long screws, the longer the screws, the more difficult it is to manufacture, significantly limiting the maximum power of a single water electrolysis hydrogen production unit. Furthermore, the installation of existing hydrogen production equipment is quite difficult. The connection holes of the electrode plates must be perfectly aligned before long bolts can be inserted. Due to the large number of electrode plates, aligning the mounting holes is challenging, and improper operation can damage or bend the long bolts, affecting the performance of the final water electrolysis hydrogen production equipment. Moreover, since all electrode plates are secured with long bolts, it is difficult to ensure consistent pressure between them. This means that leakage can easily occur between certain electrode plates, and because individual adjustments are not possible, the leakage problem is difficult to eliminate, requiring complete disassembly and replacement of the gaskets between the corresponding electrode plates. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a modular water electrolysis hydrogen production equipment, the power of which is not limited by processing capacity and is easy to install.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A modular water electrolysis hydrogen production device, characterized in that it comprises multiple water electrolysis hydrogen production modules, a first end plate device, and a second end plate device. The water electrolysis hydrogen production modules, the first end plate device, and the second end plate device are detachably connected. Each water electrolysis hydrogen production module includes a hydrogen production module body and a module base. Three male connectors are provided on one side of the hydrogen production module body, and three female connectors are provided on the other side of the hydrogen production module body. The three male connectors and three female connectors correspond one-to-one with the water supply channel, hydrogen channel, and oxygen channel within the hydrogen production module body. The male connectors include a conical sealing ring and a spring. A circular groove matching the conical sealing ring is formed on the hydrogen production module body, and the conical sealing ring is slidably disposed within the circular groove. The hydrogen module body has an outlet pipe protruding from the bottom of the circular groove in the middle. A conical sealing ring is sleeved on the outside of the outlet pipe. A spring is sleeved on the outside of the outlet pipe and located between the bottom of the circular groove and the conical sealing ring. The female connector device includes a hollow conical washer. The hydrogen production module body has a conical groove that matches the hollow conical washer. The hollow conical washer is fixed in the conical groove. The first end plate device includes a first end plate and an end plate base. Three male connector devices are provided on one side of the first end plate, and three threaded connectors are provided on the other side of the first end plate. The second end plate device includes a second baffle and an end plate base. Three female connector devices are provided on one side of the second end plate, and three threaded connectors are provided on the other side of the second end plate.

[0005] Furthermore, the outer side of the conical sealing ring is provided with a convex ring structure that protrudes from the side of the conical sealing ring, and the top of the circular groove is provided with an inwardly contracting retaining ring structure that confines the convex ring structure of the conical sealing ring within the circular groove.

[0006] Furthermore, the conical sealing ring has a through hole that matches the outlet pipe. The conical sealing ring is sleeved on the outside of the outlet pipe through the through hole and can slide freely along the axial direction of the outlet pipe. Several O-rings are provided between the inner wall of the through hole of the conical sealing ring and the outlet pipe.

[0007] Furthermore, the bottom of the through hole of the conical sealing ring has a spring groove that matches the spring. The spring is sleeved on the outside of the outlet pipe, and one end of the spring is embedded in the spring groove of the conical sealing ring, while the other end of the spring abuts against the bottom of the circular groove.

[0008] Furthermore, the inner wall of the hollow conical gasket is provided with a number of claw-shaped sealing ring structures and a number of raised rib sealing ring structures from the inside to the outside. The cross-section of the claw-shaped sealing ring structure is a V-shaped claw. One end of the V-shaped claw is connected to the inner wall of the hollow conical gasket, and the other end of the V-shaped claw is suspended and bent towards the axis of the hollow conical gasket. The raised rib sealing ring structure is a semi-circular protrusion.

[0009] Furthermore, an annular leak-proof groove is provided on the side of the hydrogen production module body outside the circular groove. An irregular leak-proof sealing ring and an expanding absorbent yarn are provided in the annular leak-proof groove. The outer diameter of the irregular leak-proof sealing ring matches the inner diameter of the annular leak-proof groove, and the inner diameter of the irregular leak-proof sealing ring is larger than the inner diameter of the annular leak-proof groove. The expanding absorbent yarn is coiled and filled in the annular leak-proof groove inside the irregular leak-proof sealing ring.

[0010] Furthermore, the bottom outer side of the irregular leak-proof sealing ring is provided with a protrusion and a protruding structure of the irregular leak-proof sealing ring, and the inner wall of the annular leak-proof groove is provided with a recessed structure that matches the protruding structure. The irregular leak-proof sealing ring is engaged in the recessed structure of the annular leak-proof groove through the protruding structure.

[0011] Furthermore, the top of the irregular leak-proof sealing ring protrudes outward from the annular leak-proof groove and extends in an arc shape toward the axis of the irregular leak-proof sealing ring, and several V-shaped annular grooves are opened on the inner wall of the irregular leak-proof sealing ring.

[0012] Furthermore, connecting plates are provided on both sides of the module base, and a connecting plate is provided on one side of the end plate base. The connecting plates have screw holes. The connecting plates of adjacent water electrolysis hydrogen production modules, the first end plate device and the second end plate device are locked and fixed together by bolts. The upper end of the hydrogen production module body is provided on both sides, and a ear plate is provided on one side of the first end plate and the second end plate. The ear plates have screw holes. The ear plates of adjacent water electrolysis hydrogen production modules, the first end plate device and the second end plate device are locked and fixed together by bolts.

[0013] Furthermore, the hydrogen production module body is provided with a cathode electrode plate, a composite membrane plate, and an anode electrode plate from left to right. The composite membrane plate includes a first gas dispersion layer, a cathode catalytic layer, a proton exchange membrane, an anode catalytic layer, and a second gas dispersion layer from left to right. A hydrogen pipeline and an oxygen pipeline are provided at the upper end of the hydrogen production module body, and an electrolyte pipeline is provided at the lower end of the hydrogen production module body. The two ends of the hydrogen pipeline, oxygen pipeline, and electrolyte pipeline are respectively connected to male and female connectors on both sides of the hydrogen production module body. The lower end of the cavity between the cathode electrode plate and the composite membrane plate is connected to the electrolyte pipeline, the upper end of the cavity between the cathode electrode plate and the composite membrane plate is connected to the hydrogen pipeline, the lower end of the cavity between the anode electrode plate and the composite membrane plate is connected to the electrolyte pipeline, and the upper end of the cavity between the anode electrode plate and the composite membrane plate is connected to the oxygen pipeline.

[0014] Compared with the prior art, the present invention has the following advantages and effects: 1. The modular water electrolysis hydrogen production equipment of the present invention, through modular design, allows for the selection and connection of an appropriate number of water electrolysis hydrogen production modules according to power requirements during equipment installation. The entire equipment is not limited by the processing precision of parts and can be assembled into hydrogen production equipment with higher power requirements. 2. The water electrolysis hydrogen production modules of the present invention are detachably fixed by bolts, and the two modules are quickly connected by a male and female connector device. Through the special structural design, the male and female connector does not require any other operation. After the two modules are installed, the male and female connector can automatically complete the docking and sealing. The self-sealing is achieved by high pressure spring and conical sealing ring. With waterproof design, the final sealing effect is good. 3. Any two modules of this invention can be disassembled separately. In the event of a leakage fault, only the faulty part needs to be disassembled for troubleshooting. Compared with the prior art, this invention is easy to install and quick to disassemble and troubleshoot. 4. The present invention provides a leak-proof groove on the outside of the male connector, and uses a special-shaped leak-proof sealing ring for sealing and leak prevention. When the male and female connector leaks water vapor mixture into the leak-proof groove, the expanding water-absorbing yarn inside absorbs water and expands to fill the leak-proof groove, and pushes the special-shaped leak-proof sealing ring outward to increase the pressure between the special-shaped leak-proof sealing ring and the module body, thereby increasing its leak-proof sealing effect and preventing leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a modular water electrolysis hydrogen production device according to the present invention.

[0016] Figure 2 This is a schematic diagram of the water electrolysis hydrogen production module of the present invention.

[0017] Figure 3 This is a left view of the water electrolysis hydrogen production module of the present invention.

[0018] Figure 4 This is a schematic diagram of the male connector device and the female connector device of the present invention.

[0019] Figure 5 This is a cross-sectional schematic diagram of the hollow conical washer of the present invention.

[0020] Figure 6 This is a schematic diagram of the annular anti-leakage groove of the present invention.

[0021] Figure 7 This is an internal structural diagram of the hydrogen production module body of the present invention.

[0022] Figure 8 This is a partial schematic diagram of the composite membrane plate of the present invention. Detailed Implementation

[0023] To illustrate in detail the technical solutions adopted by the present invention to achieve the intended technical objectives, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Furthermore, the technical means or technical features in the embodiments of the present invention can be replaced without creative effort. The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0024] like Figure 1 As shown, this invention provides a modular water electrolysis hydrogen production device, comprising multiple water electrolysis hydrogen production modules 1, a first end plate device 2, and a second end plate device 3. The water electrolysis hydrogen production modules 1, the first end plate device 2, and the second end plate device 3 are detachably connected. The multiple water electrolysis hydrogen production modules 1 are independently connected to each other. An appropriate number of water electrolysis hydrogen production modules 1 can be selected and installed according to the power requirements of the design. After installation, the first end plate device 2 and the second end plate device 3 are installed at both ends, and then external pipelines are connected to complete the installation of the entire hydrogen production device. Compared to the existing technology that uses long screw connections, this invention is not limited by the precision of the processed parts, and theoretically can achieve the stacking of hydrogen production devices with infinite power. Moreover, the independent connection between the water electrolysis hydrogen production modules makes installation faster and more convenient than with long screws, and there is no need to worry about damage or bending of long screws during operation. It requires low operational skills and has low assembly risks.

[0025] like Figure 2 and Figure 3 As shown, each water electrolysis hydrogen production module 1 includes a hydrogen production module body 4 and a module base 5, with the hydrogen production module body 4 fixed on the upper side of the module base 5. Three male connector devices 6 are provided on one side of the hydrogen production module body 4, and three female connector devices 7 are provided on the other side of the hydrogen production module body 4. The three male connector devices 6 and the three female connector devices 7 correspond one-to-one with the water supply channel, hydrogen channel and oxygen channel inside the hydrogen production module body 4, respectively.

[0026] like Figure 4As shown, the male connector device 6 includes a conical sealing ring 8 and a spring 9. The hydrogen production module body 4 has a circular groove 10 that matches the conical sealing ring 8. The outer surface of the conical sealing ring 8 is slidably disposed within the circular groove 10 and can slide freely along the axial direction of the circular groove 10. The hydrogen production module body 4 has an outlet pipe 11 protruding from the bottom surface of the circular groove 10 in the middle of the circular groove 10. One end of the outlet pipe 11 is fixed to the bottom surface of the circular groove 10 and connected to a hydrogen pipe, oxygen pipe, or electrolyte pipe inside the hydrogen production module body 4. The conical sealing ring 8 is sleeved on the outside of the outlet pipe 11, and the spring 9 is sleeved on the outside of the outlet pipe 11 and located between the bottom surface of the circular groove 10 and the conical sealing ring 8. The spring 9 provides an outward elastic force to the conical sealing ring 8. Therefore, when two hydrogen production module bodies 4 are installed and connected, the conical sealing ring 8 of the male connector device 6 can be pressed into the female connector device 7 with a certain elastic force, thereby achieving automatic docking and sealing of the male and female connector devices during the installation of the two hydrogen production module bodies 4. The female connector device 7 includes a hollow conical washer 12. The hydrogen production module body 4 has a conical groove that matches the hollow conical washer 12. The hollow conical washer 12 is fixed in the conical groove by screws or glue. A through hole is provided in the center of the hollow conical washer 12, communicating with a hydrogen pipeline, oxygen pipeline, or electrolyte pipeline inside the hydrogen production module body 4. The first end plate device 2 includes a first end plate and an end plate base. Three male connector devices 6 are provided on one side of the first end plate, and three threaded connectors 13 are provided on the other side. The second end plate device 3 includes a second baffle and an end plate base. Three female connector devices 7 are provided on one side of the second end plate, and three threaded connectors 13 are provided on the other side. The threaded connectors 13 can be quickly connected to external connecting pipes and can also be replaced with flange connectors or other types of connectors as needed.

[0027] The outer side of the conical sealing ring 8 is provided with a raised ring structure 14 protruding from the side of the conical sealing ring 8, and the top of the circular groove 10 is provided with an inwardly contracting retaining ring structure 15, which restricts the raised ring structure 14 of the conical sealing ring 8 within the circular groove 10. Through the cooperation between the outer raised ring structure 14 of the conical sealing ring 8 and the retaining ring structure 15 at the top of the circular groove 10, the entire conical sealing ring 8 is restricted within the circular groove 10, thus limiting the lateral sliding distance of the conical sealing ring 8.

[0028] The conical sealing ring 8 has a through hole that matches the outlet pipe 11. The conical sealing ring 8 is fitted onto the outside of the outlet pipe 11 through the through hole and can slide freely along the axial direction of the outlet pipe 11. Several O-rings 16 are provided between the inner wall of the through hole of the conical sealing ring 8 and the outlet pipe 11. The sealing performance of the contact gap between the conical sealing ring 8 and the outlet pipe 11 is ensured by the several O-rings 16.

[0029] The bottom of the through hole of the conical sealing ring 8 has a spring groove 17 that matches the spring. The spring 9 is sleeved on the outside of the outlet pipe 11, with one end of the spring 9 embedded in the spring groove 17 of the conical sealing ring 8, and the other end of the spring 9 abutting against the bottom of the circular groove 10. Through the recessed structure of the spring groove 17, the spring 9 is partially embedded into the conical sealing ring 8, making the overall structure more compact and reasonable. It can also reduce the depth of the circular groove 10 to a certain extent, reducing the waste of side space of the hydrogen production module body 4.

[0030] like Figure 5 As shown, the inner wall of the hollow conical gasket 12 is provided with several claw-shaped sealing ring structures 18 and several raised rib sealing ring structures 19 arranged sequentially from the inside to the outside. The cross-section of the claw-shaped sealing ring structure 18 is a V-shaped claw, one end of which is connected to the inner wall of the hollow conical gasket 12, and the other end of which is suspended and bent towards the axis of the hollow conical gasket 12. The raised rib sealing ring 19 has a semi-circular raised cross-section. When the male connector device 6 is pressed into the female connector device 7, the outer surface of the conical sealing ring 8 is tightly pressed against the inner wall of the hollow conical gasket 12, and the raised rib sealing ring 19 forms a good sealing performance to the outside of the conical sealing ring 8. The V-shaped claws of the claw-type sealing ring structure 18 are bent, and because the V-shaped claws bend towards the axis of the hollow conical washer 12, after installation, the V-shaped claws form a one-way structure, which can effectively prevent the leakage of internal water vapor mixture. Moreover, even if leakage occurs, the leaked water vapor mixture will be stored between the two V-shaped claws. Since the innermost side of the hollow conical washer 12 is closest to the pipe, the pressure is the greatest, and the possibility of leakage is also the greatest. The multi-stage V-shaped claw structure stores the leaked water vapor mixture in stages. The leaked water vapor mixture stored between the two stages of V-shaped claws will also generate corresponding pressure. In this way, the pressure between the multi-stage V-shaped claws will decrease from the inside to the outside, thereby greatly reducing the possibility of leakage of the outermost V-shaped claw and achieving a good leak-proof effect.

[0031] like Figure 6 As shown, an annular leak-proof groove 20 is provided on the side of the hydrogen production module body 4 outside the circular groove 10. An irregular leak-proof sealing ring 21 and an expanding absorbent yarn 22 are provided in the annular leak-proof groove 20. The outer diameter of the irregular leak-proof sealing ring 21 matches the inner diameter of the annular leak-proof groove 20, and the inner diameter of the irregular leak-proof sealing ring 21 is larger than the inner diameter of the annular leak-proof groove 20. After the irregular leak-proof sealing ring 21 is installed in the annular leak-proof groove 20, there is still a gap between the inner side of the irregular leak-proof sealing ring 21 and the inner wall of the annular leak-proof groove 20. The expanding absorbent yarn 22 is coiled and filled in the annular leak-proof groove 20 inside the irregular leak-proof sealing ring 21 to fill this gap.

[0032] The bottom outer side of the irregular leak-proof sealing ring 21 is provided with a protrusion and a protruding structure 23. The inner wall of the annular leak-proof groove 20 is provided with a recessed structure that matches the protruding structure 23. The irregular leak-proof sealing ring 21 is installed and fixed by the protruding structure 23 being engaged in the recessed structure of the annular leak-proof groove 20.

[0033] The top of the irregularly shaped leak-proof sealing ring 21 protrudes outward from the annular leak-proof groove 20 and extends in an arc shape towards the axis of the irregularly shaped leak-proof sealing ring. Thus, the top 24 of the extension protrudes from the inner wall of the irregularly shaped leak-proof sealing ring 21 and is suspended outside the annular leak-proof groove 20. When the two hydrogen production module bodies 4 are installed and fitted together, the top 24 of the extension is pressed downward, thereby forming a good seal. Several V-shaped annular grooves 25 are formed on the inner wall of the irregularly shaped leak-proof sealing ring 21. The V-shaped annular grooves 25 can increase the compression and extension performance of the entire irregularly shaped leak-proof sealing ring 21. When a gas-liquid mixture leaks into the annular leak-proof groove 20, the absorbent yarn 22 inside absorbs water and expands, thereby filling the annular leak-proof groove 20 and generating an outward expansion force, increasing the internal pressure of the annular leak-proof groove 20, which can effectively suppress the leakage of the gas-liquid mixture into the annular leak-proof groove 20. Furthermore, the expanding absorbent yarn 22 will push the top 24 of the extension of the irregular leak-proof sealing ring 21 outward, increasing the pressure between the top 24 of the extension and the side of the hydrogen production module body 4, resulting in a stronger sealing effect.

[0034] like Figure 2 and Figure 3 As shown, connecting plates 26 are provided on both sides of the module base 5, and a connecting plate 26 is provided on one side of the end plate base. The connecting plates 26 have screw holes. The connecting plates 26 of adjacent water electrolysis hydrogen production modules 1, the first end plate device 2, and the second end plate device 3 are fixed together by bolts. Ear plates 27 are provided on both sides of the upper end of the hydrogen production module body 4, and ear plates 27 are provided on one side of the first and second end plates. The ear plates 27 have screw holes. The ear plates 27 of adjacent water electrolysis hydrogen production modules 1, the first end plate device 2, and the second end plate device 3 are fixed together by bolts. Thus, when installing two adjacent water electrolysis hydrogen production modules 1, simply place the two water electrolysis modules 1 neatly and fit them together, then pass three bolts through the screw holes of the connecting plates 26 on both sides of the module base 5 and the screw holes of the ear plates 27 on the upper end of the hydrogen production module body 4, and lock them together with nuts.

[0035] like Figure 7 and Figure 8As shown, the hydrogen production module body 4 is provided with a cathode electrode plate 28, a composite membrane plate 29 and an anode electrode plate 30 arranged from left to right. Both the cathode electrode plate 28 and the anode electrode plate 30 have a flow guiding groove structure on one side. The composite template 29 includes, from left to right, a first gas dispersion layer 31, a cathode catalytic layer 32, a proton exchange membrane 33, an anode catalytic layer 34, and a second gas dispersion layer 35. The upper end of the hydrogen production module body 4 is provided with a hydrogen pipeline and an oxygen pipeline, and the lower end of the hydrogen production module body 4 is provided with an electrolyte pipeline. The two ends of the hydrogen pipeline, oxygen pipeline, and electrolyte pipeline are respectively connected to male connector devices 6 and female connector devices 7 on both sides of the hydrogen production module body 4. The lower end of the cavity between the cathode electrode plate 28 and the composite membrane plate 29 is connected to the electrolyte pipeline, and the upper end of the cavity between the cathode electrode plate 28 and the composite membrane plate 29 is connected to the hydrogen pipeline. The lower end of the cavity between the anode electrode plate 30 and the composite membrane plate 29 is connected to the electrolyte pipeline, and the upper end of the cavity between the anode electrode plate 30 and the composite membrane plate 29 is connected to the oxygen pipeline.

[0036] The modular water electrolysis hydrogen production equipment of this invention, through its modular design, allows for the selection and assembly of an appropriate number of water electrolysis hydrogen production modules based on power requirements during installation. The entire equipment is not limited by the precision of component manufacturing, enabling the assembly of hydrogen production equipment with high power requirements. The water electrolysis hydrogen production modules of this invention are detachably fixed with bolts, and two modules can be quickly connected via a male-female connector device. Through a special structural design, the male-female connector requires no further operation; after the two modules are installed, the connector automatically achieves a connection and seal. Self-sealing is achieved through a high-pressure spring and a conical sealing ring, and the waterproof design ensures excellent sealing performance. Any two modules of this invention can be disassembled individually. In the event of a leakage fault, only the faulty part needs to be disassembled for troubleshooting. Compared to existing technologies, this invention is convenient to install and allows for quick and rapid troubleshooting. This invention features a leak-proof groove on the outer side of the male connector, which is sealed with a shaped leak-proof sealing ring. When a leak occurs between the male and female connectors, and a mixture of water vapor enters the leak-proof groove, the absorbent yarn inside absorbs water and expands, filling the leak-proof groove and pushing the shaped leak-proof sealing ring outward to increase the pressure between the shaped leak-proof sealing ring and the module body, thereby enhancing the leak-proof sealing effect and preventing leakage.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments without departing from the scope of the present invention, based on the technical essence of the present invention and within the spirit and principles of the present invention, shall still fall within the protection scope of the present invention.

Claims

1. A modular water electrolysis hydrogen generation plant, characterized by: It comprises multiple water electrolysis hydrogen production modules, a first end plate device, and a second end plate device. The water electrolysis hydrogen production modules, the first end plate device, and the second end plate device are detachably connected. Each water electrolysis hydrogen production module includes a module body and a module base. Three male connectors are located on one side of the module body, and three female connectors are located on the other side. The three male and three female connectors correspond one-to-one with the water supply channel, hydrogen channel, and oxygen channel within the module body, respectively. The male connector includes a conical sealing ring and a spring. A circular groove matching the conical sealing ring is formed on the module body, and the conical sealing ring slides within the circular groove. An outlet pipe protruding from the bottom of a circular groove is provided in the middle of the groove. A conical sealing ring is sleeved on the outside of the outlet pipe. A spring is sleeved on the outside of the outlet pipe and located between the bottom of the circular groove and the conical sealing ring. The female connector device includes a hollow conical washer. A conical groove matching the hollow conical washer is opened on the hydrogen production module body. The hollow conical washer is fixed in the conical groove. The first end plate device includes a first end plate and an end plate base. Three male connector devices are provided on one side of the first end plate, and three threaded connectors are provided on the other side of the first end plate. The second end plate device includes a second end plate and an end plate base. Three female connector devices are provided on one side of the second end plate, and three threaded connectors are provided on the other side of the second end plate. The side of the hydrogen production module body has an annular leak-proof groove outside the circular groove. A shaped leak-proof sealing ring and an expanding absorbent yarn are installed inside the annular leak-proof groove. The outer diameter of the shaped leak-proof sealing ring matches the inner diameter of the annular leak-proof groove, while the inner diameter of the shaped leak-proof sealing ring is larger than the inner diameter of the annular leak-proof groove. The expanding absorbent yarn is coiled and filled inside the annular leak-proof groove on the inner side of the shaped leak-proof sealing ring. A raised structure protruding from the bottom outer side of the shaped leak-proof sealing ring is provided. A corresponding recessed structure matching the raised structure is provided on the inner wall of the annular leak-proof groove. The shaped leak-proof sealing ring is secured within the recessed structure of the annular leak-proof groove by the raised structure. The top of the shaped leak-proof sealing ring protrudes outward from the annular leak-proof groove and extends in an arc towards the axis of the shaped leak-proof sealing ring. Several V-shaped grooves are formed on the inner wall of the shaped leak-proof sealing ring.

2. The modular water electrolysis hydrogen generation plant of claim 1, wherein: The outer side of the conical sealing ring is provided with a convex ring structure that protrudes from the side of the conical sealing ring, and the top of the circular groove is provided with a retaining ring structure that contracts inward and restricts the convex ring structure of the conical sealing ring within the circular groove.

3. The modular water electrolysis hydrogen generation plant of claim 2, wherein: The conical sealing ring has a through hole that matches the outlet pipe. The conical sealing ring is sleeved on the outside of the outlet pipe through the through hole and can slide freely along the axial direction of the outlet pipe. Several O-rings are provided between the inner wall of the through hole of the conical sealing ring and the outlet pipe.

4. The modular water electrolysis hydrogen generation plant of claim 3, wherein: The conical sealing ring has a spring groove at the bottom of its through hole that matches the spring. The spring is sleeved on the outside of the outlet pipe, with one end of the spring embedded in the spring groove of the conical sealing ring and the other end of the spring abutting against the bottom of the circular groove.

5. The modular water electrolysis hydrogen generation plant of claim 1, wherein: The hollow conical gasket has several claw-shaped sealing ring structures and several raised rib sealing ring structures arranged sequentially from the inside to the outside. The cross-section of the claw-shaped sealing ring structure is a V-shaped claw. One end of the V-shaped claw is connected to the inner wall of the hollow conical gasket, and the other end of the V-shaped claw is suspended and bent towards the axis of the hollow conical gasket. The raised rib sealing ring structure is a semi-circular protrusion.

6. The modular water electrolysis hydrogen generation plant of claim 1, wherein: Both sides of the module base are provided with connecting plates, and one side of the end plate base is provided with a connecting plate. The connecting plates have screw holes. The connecting plates of adjacent water electrolysis hydrogen production modules, the first end plate device and the second end plate device are locked and fixed together by bolts. Both sides of the upper end of the hydrogen production module body are provided with ear plates, and one side of the first end plate and the second end plate is provided with ear plates. The ear plates have screw holes. The ear plates of adjacent water electrolysis hydrogen production modules, the first end plate device and the second end plate device are locked and fixed together by bolts.

7. The modular water electrolysis hydrogen generation plant of claim 1, wherein: The hydrogen production module body is provided with a cathode electrode plate, a composite membrane plate and an anode electrode plate arranged from left to right. The composite membrane plate includes a first gas dispersion layer, a cathode catalytic layer, a proton exchange membrane, an anode catalytic layer and a second gas dispersion layer arranged from left to right. A hydrogen pipeline and an oxygen pipeline are provided at the upper end of the hydrogen production module body, and an electrolyte pipeline is provided at the lower end of the hydrogen production module body. The two ends of the hydrogen pipeline, oxygen pipeline and electrolyte pipeline are connected to male and female connectors on both sides of the hydrogen production module body, respectively. The lower end of the cavity between the cathode electrode plate and the composite membrane plate is connected to the electrolyte pipeline, the upper end of the cavity between the cathode electrode plate and the composite membrane plate is connected to the hydrogen pipeline, the lower end of the cavity between the anode electrode plate and the composite membrane plate is connected to the electrolyte pipeline, and the upper end of the cavity between the anode electrode plate and the composite membrane plate is connected to the oxygen pipeline.

Images