Hydrogen production system

Abstract

The invention relates to the technical field of hydrogen production equipment, and provides a hydrogen production system which comprises an automatic water supplementing subsystem, an electrolysis subsystem, a gas separation subsystem and a hydrogen filtering subsystem which are sequentially connected, the electrolysis subsystem comprises a hydrogen production shell, and a dryer, a water storage container and a hydrogen production reactor are sequentially arranged in the hydrogen production shell from top to bottom; a hydrogen output pipeline is arranged in the hydrogen production shell, and the water storage container is communicated with the automatic water replenishing subsystem; the gas separation subsystem comprises an oxygen separator, a hydrogen storage tank and a separation structure, one end of the separation structure is communicated with the hydrogen output pipeline, the other end of the separation structure is respectively communicated with the oxygen separator and the hydrogen storage tank, and the hydrogen storage tank is provided with an air pressure regulating valve and a hydrogen calibration device. The problems that hydrogen production and hydrogen storage are separated, and potential safety hazards exist during hydrogen storage are solved, and the hydrogen storage device has the advantages of being simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production equipment, and in particular to a hydrogen production system. Background Art

[0002] As a clean and pollution-free new energy, hydrogen is highly favored by people. Some small hydrogen generators on the market cannot meet the huge demand for hydrogen energy. Therefore, more and more large-scale hydrogen production enterprises have emerged, and the technology of hydrogen production system is the top priority of such enterprises. At present, hydrogen production and hydrogen storage devices are more often separated, which invisibly increases the manufacturing cost; at the same time, the traditional high-pressure cylinder hydrogen storage, the hydrogen storage pressure can reach 15MPa, and there is a safety hazard of explosion. Summary of the invention

[0003] Based on this, in order to solve the problem that hydrogen production and hydrogen storage are separated and there are potential safety hazards during hydrogen storage, the present invention provides a hydrogen production system, and its specific technical solution is as follows:

[0004] A hydrogen production system, comprising an automatic water replenishment subsystem, an electrolysis subsystem, a gas separation subsystem and a hydrogen filtration subsystem connected in sequence, wherein the electrolysis subsystem comprises a hydrogen production shell, wherein a dryer, a water storage container and a hydrogen production reactor are arranged in sequence from top to bottom inside the hydrogen production shell, wherein a hydrogen output pipeline is provided in the hydrogen production shell, wherein the water storage container is connected to the automatic water replenishment subsystem; wherein the gas separation subsystem comprises an oxygen separator, a hydrogen storage tank and a separation structure, wherein one end of the separation structure is connected to the hydrogen output pipeline, and the other end of the separation structure is connected to the oxygen separator and the hydrogen storage tank respectively, wherein a pressure regulating valve and a hydrogen calibration device are installed on the hydrogen storage tank

[0005] The above hydrogen production system is provided with a dryer to dry and filter the wet hydrogen generated inside the hydrogen production shell, thereby ensuring the purity of the hydrogen, which is conducive to the output of dry and pure hydrogen; by providing a separation structure, the hydrogen and oxygen formed by electrolysis in the hydrogen production shell are separated, which is convenient for the subsequent collection and storage of hydrogen and oxygen, and also solves the problem of increasing manufacturing costs by separating hydrogen production and hydrogen storage; by providing a pressure regulating valve, the hydrogen pressure in the hydrogen storage tank can be adjusted, and the pressure regulation can be achieved without complex control circuits or control programs, which solves the problem of explosion safety hazards during hydrogen storage; by providing a hydrogen calibration device, it is convenient to compare the purity of the collected hydrogen. If it does not meet the requirements, the system is readjusted until the purity of the hydrogen meets the requirements.

[0006] Furthermore, the automatic water replenishment subsystem includes a water replenishment pipe, a water storage tank and a monitoring box, the water storage tank is connected to the side wall of the monitoring box, the water storage tank is provided with a water inlet and a water outlet, one end of the water replenishment pipe is connected to the water outlet, the other end of the water replenishment pipe extends into the hydrogen production shell and is connected to the water storage container, the monitoring box is provided with a water pressure monitoring gauge, and a filter is provided in the water storage tank.

[0007] Furthermore, a hydrogen production tank is installed in the hydrogen production shell, and a supporting foot is fixed to the bottom of the hydrogen production tank, and the supporting foot is detachably installed at the bottom of the hydrogen production shell. A hydrogen production cavity is formed in the hydrogen production tank, and the hydrogen output pipeline is arranged on the hydrogen production tank and connected with the hydrogen production cavity. A connecting pipe extending from the water storage container is also arranged on the outer wall of the hydrogen production tank, and the connecting pipe is connected with the water replenishment pipe. An air pressure monitoring gauge is also arranged on the outer wall of the hydrogen production tank.

[0008] Furthermore, a partition plate is provided in the hydrogen production tank, and the partition plate divides the hydrogen production chamber into a hydrogen storage chamber and a hydrogen production chamber from top to bottom. A one-way flow device is provided on the partition plate. The dryer, the water storage container and the hydrogen production reactor are arranged in the hydrogen production chamber from top to bottom in sequence. A transparent plate is also provided between the water storage container and the hydrogen production reactor, and a pressure sensing switch is installed on the water storage container.

[0009] Furthermore, the dryer is a gas-water separation device containing a molecular sieve or an inorganic desiccant; the one-way flow device is provided with a first one-way valve and a first pressure gauge; the hydrogen output pipeline is provided with a second pressure gauge, a hydrogen flow rate meter and a second one-way valve in sequence along the direction of hydrogen flow.

[0010] Further, the air pressure regulating valve includes a valve body and a sliding assembly, the valve body is provided with a cavity along its axial direction, the sliding assembly is arranged in the cavity, the sliding assembly includes a first slide plate and a telescopic part, the first slide plate is located on the cross-section of the cavity, and the circumferential edge of the first slide plate is in contact with the inner wall of the valve body, and the valve body is provided with a fixed sealing plate on the cross-section of the cavity.

[0011] Furthermore, a through hole is provided on the sealing plate, the telescopic member is connected to the first slide plate through the through hole, and can control the axial movement of the first slide plate along the valve body. The first slide plate is provided with a sealing ring that can contact the sealing plate at a position radially outward corresponding to the through hole, and a vent hole is provided on the outside of the sealing ring.

[0012] Furthermore, the hydrogen filtering subsystem includes a hydrogen purifier, on which a hydrogen purity collector is provided, and the hydrogen purifier includes a common purifier and a standby purifier, the outlet of the common purifier is respectively connected to a standard hydrogen outlet and a waste gas outlet, and the outlet of the standby purifier is respectively connected to a standard hydrogen outlet and a waste gas outlet.

[0013] Furthermore, the hydrogen production system also includes a hydrogen production method, specifically, providing a closed reaction environment in the hydrogen production reactor, decomposing water input into the reaction environment to produce hydrogen under the action of a proton exchange membrane, and outputting hydrogen and oxygen at different positions in the reaction environment.

[0014] Furthermore, the hydrogen production reactor contains a catalytic reaction system, which includes an anode catalytic reaction body and a cathode catalytic reaction body symmetrically distributed with respect to the proton exchange membrane, the anode catalytic reaction body inputs water and discharges oxygen, and the cathode catalytic reaction body outputs hydrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention can be further understood from the following description in conjunction with the accompanying drawings. The components in the figures are not necessarily drawn to scale, but the emphasis is placed on illustrating the principles of the embodiments. In different views, the same reference numerals designate corresponding parts.

[0016] Figure 1 It is one of the structural schematic diagrams of the hydrogen production system according to one embodiment of the present invention;

[0017] Figure 2 This is the second structural schematic diagram of the hydrogen production system according to one embodiment of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a hydrogen production tank in a hydrogen production system according to an embodiment of the present invention;

[0019] Figure 4 is a schematic cross-sectional structure diagram of a hydrogen production tank in a hydrogen production system according to an embodiment of the present invention;

[0020] Figure 5 It is a schematic cross-sectional structure diagram of a gas pressure regulating valve in a hydrogen production system according to an embodiment of the present invention.

[0021] Description of reference numerals:

[0022] 1. Automatic water replenishment subsystem; 11. Water replenishment pipeline; 12. Water storage tank; 13. Monitoring box; 14. Water pressure monitoring meter; 2. Electrolysis subsystem; 21. Hydrogen production shell; 22. Heat dissipation structure; 23. Hydrogen production tank; 231. Partition plate; 232. Hydrogen storage chamber; 233. Hydrogen production chamber; 2331. Dryer; 2332. Water storage container; 2333. Hydrogen production reactor; 2334. Transparent plate; 2335. Pressure sensing switch; 234. One-way flow device; 2341. First one-way valve; 2342. First pressure gauge; 24. Support foot ; 25. Hydrogen output pipeline; 26. Connecting pipeline; 27. Air pressure monitoring meter; 3. Gas separation subsystem; 31. Oxygen separator; 32. Hydrogen storage tank; 33. Air pressure regulating valve; 331. Valve body; 3311. Cavity; 3312. Sealing plate; 3313. Through hole; 332. First slide plate; 3321. Sealing ring; 3322. Vent; 333. Telescopic part; 3331. Connecting rod; 3332. Elastic part; 334. Limiting part; 3341. Second slide plate; 3342. Nut; 4. Hydrogen filtration subsystem. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with its embodiments. It should be understood that the specific implementation methods described herein are only used to explain the present invention and do not limit the protection scope of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] The “first” and “second” mentioned in the present invention do not represent specific quantities and orders, but are merely used to distinguish names.

[0027] like Figure 1-Figure 5As shown, a hydrogen production system in one embodiment of the present invention includes an automatic water replenishment subsystem 1, an electrolysis subsystem 2, a gas separation subsystem 3 and a hydrogen filtration subsystem 4 connected in sequence, the electrolysis subsystem 2 includes a hydrogen production shell 21, and a dryer 2331, a water storage container 2332 and a hydrogen production reactor 2333 are arranged in the hydrogen production shell 21 from top to bottom. A hydrogen output pipeline 25 is opened in the hydrogen production shell 21, and the water storage container 2332 is connected to the automatic water replenishment subsystem 1; the gas separation subsystem 3 includes an oxygen separator 31, a hydrogen storage tank 32 and a separation structure, one end of the separation structure is connected to the hydrogen output pipeline 25, and the other end of the separation structure is connected to the oxygen separator 31 and the hydrogen storage tank 32 respectively, and the hydrogen storage tank 32 is installed with a pressure regulating valve 33 and a hydrogen calibration device.

[0028] The above-mentioned hydrogen production system is provided with a dryer 2331 to dry and filter the wet hydrogen generated inside the hydrogen production shell 21, thereby ensuring the purity of the hydrogen, which is conducive to the output of dry and pure hydrogen; by providing a separation structure, the hydrogen and oxygen formed by electrolysis in the hydrogen production shell 21 are separated, which is convenient for the subsequent collection and storage of hydrogen and oxygen, and also solves the problem of increasing manufacturing costs by separating hydrogen production and hydrogen storage; by providing an air pressure regulating valve 33, the air pressure of the hydrogen in the hydrogen storage tank 32 can be adjusted, and the air pressure regulation can be achieved without the need for complex control circuits or control programs, thereby solving the problem of explosion safety hazards during hydrogen storage; by providing a hydrogen calibration device, it is convenient to compare the purity of the collected hydrogen. If it does not meet the requirements, the system is readjusted until the purity of the hydrogen meets the requirements.

[0029] The separation structure is an existing technology. Specifically, physical methods can be used to separate hydrogen and oxygen, mainly by using the physical property differences in boiling point, solubility, etc. For example, the separation of hydrogen and oxygen can be achieved by controlling the changes in temperature and pressure, using pressure swing adsorption technology, and using the differences in the adsorption and desorption characteristics of different gases under different pressures; chemical methods can be used to separate the other gas by designing chemical reactions so that one of hydrogen or oxygen participates in the reaction. For example, through the action of a catalyst, a small amount of oxygen in hydrogen can react with hydrogen to generate water, thereby achieving the purpose of deoxygenation.

[0030] like Figure 1 and Figure 2As shown, in one embodiment, the automatic water replenishment subsystem 1 includes a water replenishment pipe 11, a water storage tank 12 and a monitoring box 13. The water storage tank 12 is connected to the side wall of the monitoring box 13. The water storage tank 12 is provided with a water inlet and a water outlet. One end of the water replenishment pipe 11 is connected to the water outlet. The other end of the water replenishment pipe 11 extends into the hydrogen production shell 21 and is connected to the water storage container 2332. A water pressure monitoring meter 14 is provided on the monitoring box 13, and a filter is provided in the water storage tank 12. In this way, by providing the automatic water replenishment subsystem 1, it is convenient to provide a pure water source for the electrolysis subsystem 2; by providing the water pressure monitoring meter 14, the water pressure and flow rate can be monitored in real time to ensure that the water supply pressure is kept in the best state, which helps to reduce the waste of water resources, improve the utilization rate of water resources, and avoid the risk of pipeline leakage or even rupture caused by excessive water pressure. Once excessive pressure is found, the operator can take timely measures to adjust it to avoid pipeline rupture and water leakage.

[0031] like Figure 1-Figure 3 As shown, in one embodiment, a hydrogen production tank 23 is installed in the hydrogen production shell 21, and a support foot 24 is fixed at the bottom of the hydrogen production tank 23. The support foot 24 is detachably installed at the bottom of the hydrogen production shell 21. A hydrogen production cavity is formed in the hydrogen production tank 23. A hydrogen output pipeline 25 is arranged on the hydrogen production tank 23 and communicated with the hydrogen production cavity. A connecting pipeline 26 extending from a water storage container 2332 is also arranged on the outer wall of the hydrogen production tank 23. The connecting pipeline 26 is connected to the water supply pipeline 11. A pressure monitoring meter 27 is also arranged on the outer wall of the hydrogen production tank 23. In this way, by providing the support foot 24, the disassembly and assembly of the hydrogen production tank 23 is facilitated; by providing the pressure monitoring meter 27, the pressure condition in the hydrogen production tank 23 is directly displayed, which helps the operator to timely understand the pressure state in the hydrogen production tank 23, and by judging whether the pressure exceeds the standard, prevent safety accidents that may be caused by excessive pressure.

[0032] like Figure 1 and Figure 2 As shown, further, a heat dissipation structure 22 is provided on the top of the hydrogen production shell 21, so as to facilitate cooling the inside of the hydrogen production shell 21, ensure the stable operation inside the hydrogen production tank 23 and extend the service life of the entire hydrogen production system.

[0033] like Figure 3 and Figure 4As shown, in one embodiment, a partition plate 231 is installed in the hydrogen production tank 23, and the partition plate 231 divides the hydrogen production chamber into a hydrogen storage chamber 232 and a hydrogen production chamber 233 from top to bottom. A one-way flow device 234 is opened on the partition plate 231, and a dryer 2331, a water storage container 2332 and a hydrogen production reactor 2333 are arranged in the hydrogen production chamber 233 from top to bottom. A transparent plate 2334 is also arranged between the water storage container 2332 and the hydrogen production reactor 2333, and a pressure sensing switch 2335 is installed on the water storage container 2332. In this way, by providing a one-way flow device 234, the hydrogen produced in the hydrogen production chamber 233 can flow into the hydrogen storage chamber 232 in one direction, and the hydrogen in the hydrogen storage chamber 232 cannot flow back into the hydrogen production chamber 233, which is beneficial to the output of hydrogen; by providing a pressure sensing switch 2335, the pressure sensing switch 2335 senses the hydrogen pressure in the hydrogen production chamber 233. When the hydrogen pressure is less than a certain pressure value, the pressure sensing switch 2335 automatically opens the water in the water storage container 2332, and the outflowing water reacts on the hydrogen production reactor 2333 to produce hydrogen, so that the hydrogen pressure in the hydrogen production chamber 233 gradually increases. When it increases to a certain pressure value, the hydrogen enters the hydrogen storage chamber 232 through the one-way flow device 234.

[0034] In one embodiment, the dryer 2331 is a gas-water separation device containing a molecular sieve or an inorganic desiccant; the one-way flow device 234 is provided with a first one-way valve 2341 and a first pressure gauge 2342; the hydrogen output pipeline is provided with a second pressure gauge, a hydrogen flow meter and a second one-way valve in sequence along the direction of hydrogen flow. The size and flow rate of hydrogen output can be clearly observed.

[0035] like Figure 5 As shown, in one embodiment, the air pressure regulating valve 33 includes a valve body 331 and a sliding assembly, a cavity 3311 is provided in the valve body 331 along its axial direction, the sliding assembly is arranged in the cavity 3311, the sliding assembly includes a first slide plate 332 and a telescopic member 333, the first slide plate 332 is located on the cross section of the cavity 3311, and the circumferential edge of the first slide plate 332 is in contact with the inner wall of the valve body 331, and the valve body 331 is provided with a fixed sealing plate 3312 on the cross section of the cavity 3311.

[0036] like Figure 5 As shown, in one embodiment, a through hole 3313 is provided on the sealing plate 3312, and the telescopic member 333 passes through the through hole 3313 to be connected with the first slide plate 332, and can control the axial movement of the first slide plate 332 along the valve body 331, and the first slide plate 332 is provided with a sealing ring 3321 that can contact the sealing plate 3312 at a position radially outward corresponding to the through hole 3313, and a vent hole 3322 is provided on the outer side of the sealing ring 3321.

[0037] like Figure 5As shown, further, the telescopic member 333 includes a connecting rod 3331, an elastic member 3332 and a limiting member 334, one end of the connecting rod 3331 passes through the through hole 3313 and is connected to the first slide plate 332, one end of the elastic member 3332 is connected to the sealing plate 3312, and the other end of the elastic member 3332 is connected to the limiting member 334, and the limiting member 334 is movably arranged at the other end of the connecting rod 3331 and is used to adjust the compression degree of the elastic member 3332. The two ends of the elastic member 3332 are respectively fixed on the sealing plate 3312 and the stopper 334, and the two ends of the connecting rod 3331 are respectively connected to the first slide plate 332 and the stopper 334. When the first slide plate 332 slides away from the sealing plate 3312, the stopper 334 is driven by the connecting rod 3331 to compress the elastic member 3332; when the elastic member 3332 is restored to stretch, it pushes the stopper 334, and the stopper 334 moves to drive the first slide plate 332 to slide close to the sealing plate 3312. In the initial state, the elastic force of the elastic member 3332 can be adjusted by adjusting the position of the stopper 334 on the connecting rod 3331, so that the elastic force of the elastic member 3332 is compressed to meet the design requirements.

[0038] Preferably, the elastic member 3332 is a spring.

[0039] like Figure 5 As shown, further, the limit member 334 includes a second slide plate 3341 and a nut 3342, the elastic member 3332 is connected to the second slide plate 3341, the second slide plate 3341 is threadedly connected to the connecting rod 3331, and its position on the connecting rod 3331 is limited by the nut 3342 to achieve the adjustment of the initial compression elastic force of the elastic member 3332, thereby controlling the pressure difference threshold for opening the air pressure regulating valve 33. The second slide plate 3341 and the first slide plate 332 can be arranged in the same manner in the cavity 3311 of the valve body 331. At the same time, the gas in the cavity 3311 on the side of the second slide plate 3341 enters between the sealing plate 3312 and the second slide plate 3341 through the vent hole 3322 on the second slide plate 3341, and enters the cavity 3311 on the side of the first slide plate 332 through the through hole 3313 of the sealing plate 3312 and the vent hole 3322 of the first slide plate 332 in turn, so as to adjust the air pressure of the cavity 3311 on the side of the first slide plate 332. The second slide plate 3341 is threadedly connected to the connecting rod 3331, and the elastic member 3332 is fixed on one side of the second slide plate 3341. A nut 3342 is arranged on the other side of the second slide plate 3341, and the positioning adjustment of the second slide plate 3341 is achieved by screwing the nut 3342.

[0040] Specifically, the second slide plate 3341 is located on the cross section of the cavity 3311 , and the circumferential edge of the second slide plate 3341 contacts the inner wall of the valve body 331 . The second slide plate 3341 is also provided with a vent hole 3322 .

[0041] The air pressure regulating valve 33 is provided with a fixed sealing plate 3312 in the cross section of the cavity 3311 of the valve body 331, the partition has a through hole 3313, the first slide plate 332 is located on one side of the partition, and the telescopic member 333 is located on the other side of the partition and is connected to the first slide plate 332 through the through hole 3313. When the air pressure regulating valve 33 is in a closed state, under the action of the telescopic member 333, the first slide plate 332 is close to the sealing plate 3312, and a seal is achieved with the through hole 3313 of the sealing plate 3312 through the sealing ring 3321, and the telescopic member 333 is in a compressed state. When the air pressure in the cavity 3311 on the sealing plate 3312 where the first slide plate 332 is located decreases, the air pressure in the cavity 3311 on the other side of the partition where the telescopic member 333 is located is greater than the side where the first slide plate 332 is located, thereby driving the first slide plate 332 to slide away from the sealing plate 3312, and the elastic member 3332 continues to be compressed, and the air pressure regulating valve 33 opens, and the gas enters between the first slide plate 332 and the sealing plate 3312 through the through hole 3313 of the sealing plate 3312 from the side of the telescopic member 333, and then enters the cavity 3311 on the side of the first slide plate 332 through the vent hole 3322 on the first slide plate 332, thereby gradually increasing the pressure in the cavity 3311 where the first slide plate 332 is located. After the air pressure tends to stabilize, the pressure acting on the first partition disappears, and the elastic member 3332 stretches the first slide plate 332 to slide close to the sealing plate 3312, and returns to the initial closed state, thereby achieving the function of automatically stabilizing the air pressure in the cavity 3311 where the first slide plate 332 is located.

[0042] like Figure 1 and Figure 2 As shown, in one embodiment, the hydrogen filtering subsystem 4 includes a hydrogen purifier, a hydrogen purity collector is provided on the hydrogen purifier, and the hydrogen purifier includes a common purifier and a standby purifier, the outlet of the common purifier is respectively connected to the standard hydrogen outlet and the waste gas outlet, and the outlet of the standby purifier is respectively connected to the standard hydrogen outlet and the waste gas outlet. The purity of the prepared hydrogen is compared, and if it does not meet the requirements, it is discharged through the waste gas outlet, and the system is re-deployed until the purity of the hydrogen meets the requirements, thereby improving the purity of the hydrogen prepared by the system.

[0043] In one embodiment, the hydrogen production system also includes a hydrogen production method, specifically, a closed reaction environment is provided in the hydrogen production reactor 2333, and under the action of the proton exchange membrane, the water input into the reaction environment is decomposed to produce hydrogen, and hydrogen and oxygen are output at different positions of the reaction environment. At the same time, hydrogen and oxygen are output at different positions of the reaction environment to prevent the reverse reaction of hydrogen and oxygen, thereby improving the efficiency of hydrogen production. The closed reaction environment ensures that air or oxygen is not mixed into the hydrogen production process, and a stable hydrogen production environment is obtained at the same time. The water in the reaction environment is reacted by the charge provided by the proton exchange membrane to form hydrogen and oxygen. Specifically, the water obtains the charge reaction to form hydrogen and oxygen, which is a prior art and will not be repeated here. In order to improve the efficiency of hydrogen production, hydrogen and oxygen are outputted in different positions, and the generated oxygen is continuously discharged during the hydrogen production process. At this time, additional vacuum equipment or equipment for storing inert gas can be added to assist in the discharge of oxygen to improve the efficiency and concentration of hydrogen production.

[0044] In one embodiment, the hydrogen production reactor 2333 contains a catalytic reaction system, which includes an anode catalytic reaction body and a cathode catalytic reaction body symmetrically distributed with the proton exchange membrane as the reference, water is input to the anode catalytic reaction body and oxygen is discharged, while the cathode catalytic reaction body outputs hydrogen. Under the action of the catalytic reaction system, pure water is more likely to react, which is conducive to obtaining faster and purer hydrogen production.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A hydrogen production system, comprising an automatic water replenishment subsystem, an electrolysis subsystem, a gas separation subsystem and a hydrogen filtration subsystem connected in sequence, characterized in that: The electrolysis subsystem includes a hydrogen production shell, in which a dryer, a water storage container and a hydrogen production reactor are arranged from top to bottom in sequence, a hydrogen output pipeline is opened in the hydrogen production shell, and the water storage container is connected to the automatic water replenishment subsystem; the gas separation subsystem includes an oxygen separator, a hydrogen storage tank and a separation structure, one end of the separation structure is connected to the hydrogen output pipeline, and the other end of the separation structure is connected to the oxygen separator and the hydrogen storage tank respectively, and the hydrogen storage tank is installed with a gas pressure regulating valve and a hydrogen calibration device.

2. The hydrogen production system according to claim 1, characterized in that: The automatic water replenishment subsystem includes a water replenishment pipeline, a water storage tank and a monitoring box. The water storage tank is connected to the side wall of the monitoring box. A water inlet and a water outlet are provided on the water storage tank. One end of the water replenishment pipeline is connected to the water outlet, and the other end of the water replenishment pipeline extends into the hydrogen production shell and is connected to the water storage container. A water pressure monitoring gauge is provided on the monitoring box, and a filter is provided in the water storage tank.

3. The hydrogen production system according to claim 2, characterized in that: A hydrogen production tank is installed in the hydrogen production shell, and a supporting foot is fixed to the bottom of the hydrogen production tank, and the supporting foot is detachably installed at the bottom of the hydrogen production shell. A hydrogen production cavity is formed in the hydrogen production tank, and the hydrogen output pipeline is arranged on the hydrogen production tank and communicated with the hydrogen production cavity. A connecting pipe extending from the water storage container is also arranged on the outer wall of the hydrogen production tank, and the connecting pipe is connected with the water replenishment pipe. An air pressure monitoring gauge is also arranged on the outer wall of the hydrogen production tank.

4. The hydrogen production system according to claim 3, characterized in that: A partition plate is provided inside the hydrogen production tank, and the partition plate divides the hydrogen production chamber into a hydrogen storage chamber and a hydrogen production chamber from top to bottom. A one-way flow device is provided on the partition plate. The dryer, the water storage container and the hydrogen production reactor are arranged in the hydrogen production chamber from top to bottom in sequence. A transparent plate is also provided between the water storage container and the hydrogen production reactor, and a pressure sensing switch is installed on the water storage container.

5. The hydrogen production system according to claim 4, characterized in that: The dryer is a gas-water separation device containing a molecular sieve or an inorganic desiccant; the one-way flow device is provided with a first one-way valve and a first pressure gauge; the hydrogen output pipeline is provided with a second pressure gauge, a hydrogen flow rate meter and a second one-way valve in sequence along the direction of hydrogen flow.

6. The hydrogen production system according to claim 1, characterized in that: The air pressure regulating valve includes a valve body and a sliding assembly, wherein a cavity is provided in the valve body along its axial direction, the sliding assembly is arranged in the cavity, the sliding assembly includes a first slide plate and a telescopic member, the first slide plate is located on the cross section of the cavity, and the circumferential edge of the first slide plate is in contact with the inner wall of the valve body, and the valve body is provided with a fixed sealing plate on the cross section of the cavity.

7. The hydrogen production system according to claim 6, characterized in that: The sealing plate is provided with a through hole, the telescopic member is connected to the first slide plate through the through hole, and can control the first slide plate to move axially along the valve body. The first slide plate is provided with a sealing ring that can contact the sealing plate at a position radially outward corresponding to the through hole, and a vent hole is provided on the outside of the sealing ring.

8. The hydrogen production system according to claim 1, characterized in that: The hydrogen filtering subsystem includes a hydrogen purifier, on which a hydrogen purity collector is provided. The hydrogen purifier includes a common purifier and a standby purifier. The outlet of the common purifier is respectively connected to a standard hydrogen outlet and a waste gas outlet, and the outlet of the standby purifier is respectively connected to a standard hydrogen outlet and a waste gas outlet.

9. The hydrogen production system according to claim 1, characterized in that: It also includes a hydrogen production method, specifically, providing a closed reaction environment in a hydrogen production reactor, decomposing water input into the reaction environment to produce hydrogen under the action of a proton exchange membrane, and outputting hydrogen and oxygen at different positions in the reaction environment.

10. The hydrogen production system according to claim 9, characterized in that: The hydrogen production reactor contains a catalytic reaction system, which includes an anode catalytic reaction body and a cathode catalytic reaction body symmetrically distributed with respect to the proton exchange membrane. Water is input to the anode catalytic reaction body and oxygen is discharged, while hydrogen is output from the cathode catalytic reaction body.

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