High-pressure high-purity hydrogen hydrogenation integrated machine

Abstract

The application discloses a high-pressure high-purity hydrogen production and hydrogenation integrated machine, which is applied to the technical field of hydrogen production and hydrogenation and comprises a base, an electrolytic tank, two groups of hydrogen storage tanks and a water circulation mechanism, the electrolytic tank is provided with a water inlet one, a hydrogen outlet one, an oxygen outlet and a hydrogen outlet two, the water circulation mechanism comprises a three-way pipe one, two groups of filters one, two groups of pure water tanks, a flow divider one, a water storage tank, a flow divider two, two raw water tanks, a support frame two and two groups of filters two, the three-way pipe one comprises three openings one, the three openings one are respectively connected with the water inlet one and pipelines of the two groups of filters one, an electromagnetic valve one is arranged on the pipeline connected with the two groups of filters one, the two groups of filters one are respectively connected with water outlets one pipelines of the two groups of pure water tanks, and a vacuum pump one is arranged on the pipeline connected with the water outlets one, and the application can construct an efficient, closed-loop and intelligent water resource management system.

Description

Technical Field

[0001] This invention relates to the field of hydrogen production and hydrogen refining technology, specifically to an integrated high-pressure, high-purity hydrogen production and hydrogen refining machine. Background Technology

[0002] With the rapid development of the hydrogen energy industry, the integrated hydrogen production and refueling machine, as a key piece of equipment for realizing distributed hydrogen supply, has attracted much attention because it can integrate hydrogen production and refueling functions into a single system.

[0003] However, traditional equipment has significant shortcomings in water resource management. Most adopt a one-way consumption model, failing to effectively recycle the water used for electrolysis. This results in high consumption of high-purity water, high operating costs, and limited applicability in water-scarce areas. Although some designs attempt to recover condensate, they generally lack systematic multi-stage purification and intelligent monitoring, making it difficult to guarantee stable recycled water quality. This could even contaminate the electrolyzer catalyst, affecting hydrogen production efficiency and equipment lifespan. Furthermore, the electrolysis byproduct oxygen is usually directly discharged, failing to utilize its potential energy; the pumps transporting the electrolysis water rely entirely on external power, increasing system energy consumption.

[0004] Therefore, it is necessary to provide a high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine, which can construct an efficient, closed-loop, and intelligent water resource management system. While ensuring the ultra-high purity of the water used for electrolysis, it maximizes the utilization of water resources and process by-products, thereby significantly improving the energy efficiency, self-sufficiency, and environmental adaptability of the equipment, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine, including a base, an electrolytic cell, two sets of hydrogen storage tanks and a water circulation mechanism, wherein the electrolytic cell is located above the base, and the two sets of hydrogen storage tanks and the water circulation mechanism are both arranged above the base;

[0007] The electrolytic cell is equipped with a water inlet, a hydrogen outlet, an oxygen outlet, and a hydrogen outlet.

[0008] The water circulation mechanism includes a three-way pipe, two sets of filters, two sets of pure water tanks, a distributor, a water storage tank, a distributor, two raw water tanks, a support frame, and two sets of filters. The three-way pipe includes three ports, which are respectively connected to the inlet and the two sets of filters. A solenoid valve is installed on the pipeline connecting the three-way pipe to the two sets of filters.

[0009] The two sets of filters are respectively connected to the outlet pipes of the two sets of pure water tanks, and a vacuum pump is installed on the pipes connecting the filters to the outlets.

[0010] The bottom of the pure water tank is provided with one water outlet, two water outlets and two sets of spare interfaces, and the top of the pure water tank is provided with a water inlet, an air inlet and an exhaust outlet. The pure water tank, the raw water tank and the hydrogen storage tank have the same structure.

[0011] The oxygen outlet of the electrolytic cell is connected to a three-way pipe, which includes three ports. The three ports are respectively connected to the oxygen outlet and the air inlet pipes of the two sets of pure water tanks. A condenser is installed on the pipe connected to the oxygen outlet, and a solenoid valve is installed on the pipe connected to the air inlet of the two sets of pure water tanks.

[0012] According to the above technical solution, the top of the base is fixedly connected to a housing, a control cabinet, and a support frame. The control cabinet is located on the side of the housing, the support frame is located inside the housing, the electrolytic cell is fixed on the top of the support frame, and a water circulation monitoring system is installed inside the control cabinet. The water circulation monitoring system is connected to the water circulation mechanism via a signal.

[0013] According to the above technical solution, the first diverter includes a main channel and several diverting channels. The first diverting channel of the first diverter is connected to the inlet pipe of the pure water tank, and the water storage tank is connected to the main channel of the first diverter.

[0014] According to the above technical solution, the second diverter includes a main channel second and several diverting channels second. The outlet second of the pure water tank is connected to the diverting channel second of the second diverter. A vacuum pump second is installed on the connecting pipeline between the outlet second and the second diverter.

[0015] According to the above technical solution, the support frame 2 is fixed on the top of the base, and the two sets of filters 2 are fixed on the support frame 2. Each set of filters 2 consists of two filters connected in series. The filters 2 are respectively connected to the inlet pipes of the raw water and the raw water tank. A solenoid valve 4 is installed on the inlet pipe connecting the filters 2 and the raw water tank. The outlet pipe of the raw water tank is connected to a filter section. The filter section includes two sets of filters 3 and 4. The filters 3 and 4 have the same structure, each including a top connection port and two bottom connection ports. The raw water tank is connected to the top connection port of the filters 3. A vacuum pump 3 and a solenoid valve 5 are installed on the connection pipe. The top connection port of the filters 4 is connected to one of the bottom connection ports of the filters 3. One of the bottom connection ports of the filters 4 is connected to the water storage tank. The other bottom connection port of the filters 3 and the other bottom connection port of the filters 4 are connected to the exhaust port of the raw water tank through a T-connector.

[0016] According to the above technical solution, the exhaust port of the pure water tank is connected to an venting pipe, and a solenoid valve is installed on the venting pipe.

[0017] According to the above technical solution, the hydrogen outlet of the electrolyzer is connected to the inlet of the two sets of hydrogen storage tanks through a three-way pipe. The connection method is the same as the connection method between the pure water tank and the oxygen outlet of the electrolyzer. Solenoid valve six and a pressure pump are installed on the connection pipe between the hydrogen outlet and the hydrogen storage tank. The exhaust pipe of the hydrogen storage tank is connected to a hydrogen filling head. An air filter and a solenoid valve seven are installed on the connection pipe between the hydrogen storage tank and the hydrogen filling head.

[0018] According to the above technical solution, the outlet 2 of the hydrogen storage tank and the outlet 2 of the pure water tank are connected in the same way, both being connected to the diversion channel 2 of the diverter 2 through a pipeline, and a vacuum pump 2 is installed on the connecting pipeline.

[0019] According to the above technical solution, water level sensors are installed in the pure water tank, the water storage tank, and the raw water tank.

[0020] Water quality sensors are installed on the pipeline connecting filter 2 to the raw water tank, the pipeline connecting filter 4 to the water storage tank, and the pipeline connecting tee pipe 1 to inlet 1. The water circulation monitoring system sets different water quality thresholds for filters at different locations, and then compares and analyzes the actual monitoring data with the water quality thresholds to determine the water quality after filtration.

[0021] Compared with existing technologies, the beneficial effects achieved by this invention are as follows: This invention, through the setting of a water circulation mechanism, enables a multi-stage water treatment process, consisting of raw water pretreatment, secondary fine filtration, and tertiary final filtration. This minimizes water consumption while ensuring the highest water quality, and significantly improves the adaptability of the equipment in water-scarce or mobile environments. Simultaneously, it utilizes the electrolysis byproduct—oxygen—and its pressure changes within the pure water tank as one of the main driving forces for transporting pure water. Working in conjunction with a vacuum pump, it solves the problem of traditional systems relying entirely on electricity for water transport, resulting in high energy consumption. This transforms waste oxygen pressure into a valuable resource, thereby reducing the overall energy consumption of the system. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a partial structural schematic diagram of the present invention;

[0025] Figure 3 This is the invention Figure 2 Enlarged structural diagram of region A in the middle;

[0026] Figure 4 This is a partial rear view schematic diagram of the structure of the present invention;

[0027] Figure 5 This is a rear-view or top-view schematic diagram of part of the structure of the present invention;

[0028] Figure 6 This is a schematic diagram of the overall structure and pipeline connections of the present invention;

[0029] Figure 7 This is a schematic diagram of the pipeline connection in the active water replenishment state of the overall structure of the present invention;

[0030] Figure 8 This is a schematic diagram of the pipeline connection in the forced water replenishment state of the overall structure of the present invention;

[0031] Figure 9 This is a schematic diagram of the overall structure of the electrolytic water filtration cycle of the present invention;

[0032] In the diagram: 1. Base; 2. Housing; 3. Control cabinet; 4. Support frame one; 5. Electrolytic cell; 501. Water inlet one; 502. Hydrogen outlet one; 503. Oxygen outlet; 504. Hydrogen outlet two; 6. Filter one; 7. Solenoid valve one; 8. Vacuum pump one; 9. Pure water tank; 901. Water outlet one; 902. Water outlet two; 903. Water inlet; 904. Air inlet; 905. Exhaust outlet; 10. Diverter one; 11. Water storage tank; 12. Condenser; 13. Solenoid valve II; 14. Diverter II; 15. Vacuum pump II; 16. Solenoid valve III; 17. Raw water tank; 18. Support frame II; 19. Filter II; 20. Solenoid valve IV; 21. Filter III; 22. Filter IV; 23. Vacuum pump III; 24. Solenoid valve V; 25. Hydrogen storage tank; 26. Solenoid valve VI; 27. Booster pump; 28. Air filter; 29. ​​Solenoid valve VII. Detailed Implementation

[0033] The technical solutions of 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, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figure 1-9The present invention provides a technical solution: a high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine, including a base 1, an electrolysis cell 5, two sets of hydrogen storage tanks 25 and a water circulation mechanism. The electrolysis cell 5 is located above the base 1, and the two sets of hydrogen storage tanks 25 and the water circulation mechanism are all located above the base 1. The electrolysis cell 5 is used to produce hydrogen by electrolyzing water, the water circulation mechanism is used to circulate the electrolysis water used for hydrogen production and hydrogen refueling in the integrated machine, and the hydrogen storage tanks 25 are used to temporarily store hydrogen.

[0035] Specifically, such as Figures 1-2 As shown, the top of the base 1 is fixedly connected to the housing 2, the control cabinet 3 and the support frame 4. The control cabinet 3 is located on the side of the housing 2, the support frame 4 is located inside the housing 2, the electrolytic cell 5 is fixed on the top of the support frame 4, and the control cabinet 3 is equipped with a water circulation monitoring system. The water circulation monitoring system is connected to the water circulation mechanism and is used to control the circulation of water for electrolysis.

[0036] Specifically, such as Figures 2-6 As shown, the electrolytic cell 5 is equipped with a water inlet 501, a hydrogen outlet 502, an oxygen outlet 503, and a hydrogen outlet 504.

[0037] The water circulation mechanism includes a three-way pipe, two sets of filters 6, two sets of pure water tanks 9, a distributor 10, a water storage tank 11, a distributor 2 14, two raw water tanks 17, a support frame 2 18, and two sets of filters 2 19. The three-way pipe includes three ports 1, which are respectively connected to the inlet 501 and the two sets of filters 6. A solenoid valve 7 is installed on the pipeline connecting the three-way pipe to the two sets of filters 6.

[0038] The bottom of the pure water tank 9 is equipped with a water outlet 901, a water outlet 902 and two sets of spare interfaces. The top of the pure water tank 9 is equipped with a water inlet 903, an air inlet 904 and an exhaust outlet 905. The pure water tank 9, the raw water tank 17 and the hydrogen storage tank 25 have the same structure.

[0039] Two sets of filters 6 are connected to the outlets 901 of the two sets of pure water tanks 9 respectively. A vacuum pump 8 is installed on the pipeline connecting the filters 6 and the outlets 901. The filters 6 are used to filter the high-purity water entering the electrolytic cell 5 from the pure water tank 9. The vacuum pump 8 is used to pump the high-purity water in the pure water tank 9 into the electrolytic cell 5 for electrolysis.

[0040] The distributor 10 includes a main channel 1 and several branch channels 1. The branch channels 1 of the distributor 10 are connected to the inlet 903 of the pure water tank 9. The water storage tank 11 is connected to the main channel 1 of the distributor 10. The water storage tank 11 is used to store a large amount of electrolysis water. The distributor 10 is used to divert the water discharged from the water storage tank 11 into the pure water tank 9.

[0041] Diverter 2 14 includes a main channel 2 and several diverter channels 2. The outlet 2 902 of the pure water tank 9 is connected to the diverter channel 2 pipeline of the diverter 2 14. A vacuum pump 2 15 is installed on the connecting pipeline between the outlet 2 902 and the diverter 2 14. The vacuum pump 2 15 is used to discharge the condensate at the bottom of the pure water tank 9 into the water storage tank 11 through the diverter 2 14 for water circulation again.

[0042] Support frame 2 18 is fixed to the top of base 1. Two sets of filters 2 19 are fixed on support frame 2 18. Each set of filters 2 19 consists of two filters connected in series. Filters 2 19 are connected to the inlet 903 pipes of raw water and raw water tank 17, respectively. A solenoid valve 4 20 is installed on the pipe connecting filter 2 19 to the inlet 903 of raw water tank 17. The outlet 2 902 pipe of raw water tank 17 is connected to a filtration unit, which includes two sets of filters 3 21 and filters 4 22. Filters 3 21 and filters 4 22 have the same structure. Each includes one top connection port and two bottom connection ports. The raw water tank 17 is connected to the top connection port of filter 3 21 via a pipeline. A vacuum pump 3 23 and a solenoid valve 5 24 are installed on the connection pipeline. The top connection port of filter 4 22 is connected to one of the bottom connection ports of filter 3 21 via a pipeline. One of the bottom connection ports of filter 4 22 is connected to the water storage tank 11 via a pipeline. The other bottom connection port of filter 3 21 and the other bottom connection port of filter 4 22 are connected to the exhaust port 905 of the raw water tank 17 via a T-connector.

[0043] Supplementary explanation based on the above structure: such as Figure 6 As shown, when solenoid valve 24 and solenoid valve 20 are closed at the same time, the water volume inside the raw water tank 17 can be kept stable. The water after secondary filtration inside the water storage tank 11 can be distributed to the pure water tank 9 for temporary storage via the distributor 10. After passing through the three-stage filtration of the filter 6, it enters the electrolyzer 5 for water electrolysis to produce hydrogen. This process is in normal operation.

[0044] like Figure 7 As shown, solenoid valve 5 24 is closed and solenoid valve 4 20 is open. The raw water is initially filtered by filter 2 19 and temporarily stored in the raw water tank 17. When the water volume in the raw water tank 17 reaches its maximum, it can overflow from the top of the raw water tank 17 and enter the filtration section from the exhaust port 905 of the raw water tank 17. Filter 3 21 and filter 4 22 perform secondary filtration on the water in the raw water tank 17, and then enter the water storage tank 11 for temporary storage. This process is an active water replenishment state.

[0045] like Figure 8As shown, when solenoid valve 24 is open and solenoid valve 20 is closed, vacuum pump 23 is started at the same time, which can pump the raw water that has been initially filtered in raw water tank 17 into the filtration section. After secondary filtration by filter 21 and filter 22, the water enters the water storage tank 11 for temporary storage until the water storage tank 11 is full. This process is a forced water replenishment state.

[0046] like Figure 9 As shown, when solenoid valve 5 24 and solenoid valve 4 20 are opened simultaneously, vacuum pump 3 23 is also started, which pumps the pre-filtered raw water in raw water tank 17 into the filtration section. After secondary filtration by filter 3 21 and filter 4 22, the water enters the water storage tank 11 for temporary storage, and then fills the water storage tank 11. After the water storage tank 11 is filled, the water that has been filtered twice in the filtration section can overflow and return to the raw water tank 17 under pressure until the raw water tank 17 is full. Then, solenoid valve 5 24 and solenoid valve 4 20 are closed, and vacuum pump 3 23 stops running. This process is the electrolytic water filtration cycle.

[0047] It should be noted that, since there are two sets of raw water tanks 17, in actual use, the solenoid valves 24 and 20 connected to the two sets of raw water tanks 17 can be controlled to be in the same or different opening states, so that the two sets of raw water tanks 17 are in a state of one in use and one in standby, thereby ensuring the stability of the water level inside the water storage tank 11, and thus ensuring that the electrolyzer 5 can stably perform water electrolysis to produce hydrogen.

[0048] Specifically, such as Figure 2 , Figures 4-6 As shown, the exhaust port 905 of the pure water tank 9 is connected to an venting pipe, and a solenoid valve 16 is installed on the venting pipe. When the solenoid valve 16 is opened, it is used to discharge the oxygen inside the pure water tank 9 and reduce the pressure inside the pure water tank 9.

[0049] The oxygen outlet 503 of the electrolytic cell 5 is connected to a three-way pipe, which has three ports. These ports are connected to the oxygen outlet 503 and the air inlets 904 of the two sets of pure water tanks 9, respectively. A condenser 12 is installed on the pipe connecting the three-way pipe to the oxygen outlet 503. A solenoid valve 13 is installed on the pipe connecting the three-way pipe to the air inlets 904 of the two sets of pure water tanks 9. The two sets of solenoid valves 13 open alternately, thereby controlling the oxygen generated in the electrolytic cell 5 to alternately enter the pure water tanks 9, increasing the internal pressure of the pure water tanks 9. The vacuum pump 8, with the assistance of air pressure, pumps the water in the pure water tanks 9 into the filter 6 for three-stage filtration before entering the electrolytic cell 5. The gas in the pure water tanks 9 is then discharged through the exhaust port 905, stabilizing the internal pressure of the pure water tanks 9 again.

[0050] Specifically, such as Figures 2-6As shown, the hydrogen outlet 502 of the electrolyzer 5 is connected to the inlet 904 of the two sets of hydrogen storage tanks 25 via a three-way pipe. The connection method is the same as the connection method between the pure water tank 9 and the oxygen outlet 503 of the electrolyzer 5. Solenoid valve 6 26 and pressurizing pump 27 are installed on the connecting pipe between hydrogen outlet 502 and hydrogen storage tank 25. The exhaust port 905 of hydrogen storage tank 25 is connected to a hydrogen filling head. An air filter 28 and solenoid valve 7 29 are installed on the connecting pipe between hydrogen storage tank 25 and hydrogen filling head. Solenoid valve 6 26 is used to open alternately. When solenoid valve 6 26 is opened, the pressurizing pump 27 of the same group is started, thereby alternately pressurizing and storing hydrogen. When solenoid valve 7 29 is opened, the air filter 28 can filter out water vapor and oxygen in the hydrogen before hydrogen is added through the hydrogen filling head.

[0051] The outlet 902 of the hydrogen storage tank 25 is connected to the outlet 902 of the pure water tank 9 in the same way. Both are connected to the diversion channel 2 of the diverter 14 through pipelines. A vacuum pump 15 is installed on the connecting pipeline. The vacuum pump 15 is used to pump the water condensed by the high humidity hydrogen stored in the hydrogen storage tank 25 into the diverter 14 and then into the water storage tank 11 for water circulation.

[0052] Specifically, water level sensors (not shown in the figure) are installed in the pure water tank 9, the water storage tank 11, and the raw water tank 17. The water level sensors are used to detect the water level and prevent damage to the electrolysis cell 5 due to insufficient water for electrolysis.

[0053] Specifically, the water circulation monitoring system is equipped with water quality sensors on the pipeline connecting filter 2 19 to raw water tank 17, filter 4 22 to water storage tank 11, and tee pipe 1 to inlet 1 501. The water circulation monitoring system sets different water quality thresholds according to the filters at different locations, and then compares and analyzes the actual monitoring data with the water quality thresholds to determine the water quality after filtration.

[0054] It should be noted that water quality is considered qualified when the actual tested water quality data is below the water quality threshold. The monitored data includes, but is not limited to, total organic carbon and impurities in the water. The specific threshold is set according to actual needs. Unused interfaces on pure water tank 9, raw water tank 17 and hydrogen storage tank 25 are sealed and used as spare interfaces. Filter 1 6, Filter 2 19, Filter 3 21 and Filter 4 22 are selected according to actual needs.

[0055] Working method of high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine:

[0056] Step 1: Raw water supply and intelligent water replenishment;

[0057] Specifically, proactive hydration: such as Figure 7As shown, when water needs to be replenished from the outside, solenoid valve 20 is opened. After the raw water is initially filtered by filter 19, it enters the raw water tank 17 for temporary storage. At this time, the water circulation monitoring system obtains the water quality after the first-stage filtration. If the monitored water quality data does not exceed the water quality threshold, the initial filtration is qualified and can meet the requirements of the second-stage filtration. The system continues to maintain the current state until the liquid level in the raw water tank 17 reaches the highest level. The water in the raw water tank 17 will overflow from the top and enter the fine filtration section composed of filter 21 and filter 22 for active second-stage filtration, and then flow into the water storage tank 11.

[0058] Forced hydration: such as Figure 8 As shown, when the water level in the storage tank 11 is insufficient but there is water in the raw water tank 17, the system can start internal forced water replenishment. At this time, the solenoid valve 20 is closed, the solenoid valve 24 is opened and the vacuum pump 23 is started, pumping the water in the raw water tank 17 into the filtration section, where it undergoes passive secondary filtration and is then injected into the storage tank 11 until it is full.

[0059] Circulation balance: By coordinating the valve status of the two sets of raw water tanks 17, the water circulation mechanism can be kept in a one-in-use and one-in-standby mode to achieve uninterrupted and stable water replenishment.

[0060] Step Two: Pure Water Preparation and Powered Oxygen Delivery;

[0061] Specifically, the water in the storage tank 11 is distributed to each pure water tank 9 by the distributor 10, and ultrapure water is supplied to the electrolysis cell 5. The oxygen generated by electrolysis is cooled by the condenser 12 and then controlled by the solenoid valve 13 to alternately enter the air inlet 904 of one pure water tank 9 to apply pressure to its interior. At the same time, the vacuum pump 8 is started and the solenoid valve 7 is opened. The pure water in the pure water tank 9 is forced into the filter 6 for final three-stage filtration under the pressure of the vacuum pump 8 and the oxygen.

[0062] A water quality sensor installed after filter 6 monitors the purity of the incoming water in real time. If the monitored water quality data does not exceed the water quality threshold, the purity is considered up to standard, and ultrapure water is delivered to the inlet 501 of the electrolyzer 5, thereby actively protecting the electrolyzer from water contamination. If the water quality is not up to standard, the solenoid valve 7 on the pipeline connecting another set of backup pure water tanks 9 and the electrolyzer 5 is opened, and at the same time, the solenoid valve 16 on the pipeline connecting the exhaust port 905 of the pure water tank 9 is opened. At this time, the internal pressure of the pure water tank 9 decreases, and the water that does not meet the standard after being filtered by filter 6 in the currently operating pure water tank 9 is drawn into the other set of backup pure water tanks 9 by the pressure difference. At the same time, it is filtered again by filter 6 on the same pipeline. Then, the original vacuum pump 8 is stopped, and the vacuum pump 8 connected to the pure water tank 9 is started, and the above operation is repeated. If the water quality is still not up to standard at this time, the water circulation monitoring system will issue an alarm and automatically cut off the water supply, and the electrolyzer 5 will stop operating to protect the electrolyzer 5.

[0063] Step 3: Electrolytic hydrogen production and product processing;

[0064] Specifically, high-purity water enters the electrolytic cell 5 through inlet 501. Then, under the action of direct current in the electrolytic cell 5, the high-purity water is decomposed, producing hydrogen at the cathode and oxygen at the anode. The hydrogen is discharged from the hydrogen outlet 502 and enters the storage and filling stage, while the oxygen is discharged from the oxygen outlet 503. The oxygen is then used for pure water transportation according to the path in step two, realizing the reuse of the process by-products.

[0065] Step 4: Condensate recovery and closed-loop circulation;

[0066] Specifically, the wet hydrogen discharged from the hydrogen outlet 502 of the electrolyzer 5 and the liquid water that is released from the high-pressure hydrogen storage tank 25 due to pressure changes will accumulate in the hydrogen storage tank 25. When the water level reaches a certain value, the vacuum pump 15 will start. Through the distributor 14, this condensate will be effectively recovered and pumped back to the water storage tank 11 to re-enter the water production cycle, realizing the closed-loop recovery of water resources and improving the adaptability of the all-in-one machine in mobile or water-scarce scenarios.

[0067] Step 5: Hydrogen storage and refueling;

[0068] Specifically, the dried high-purity hydrogen is compressed and stored in two sets of alternating hydrogen storage tanks 25 by the pressure pump 27, and then the hydrogen is injected into the external system through a filling head equipped with an air filter 28.

[0069] Through the above methods, multi-stage filtration, oxygen-powered water supply, comprehensive condensate recovery, and intelligent water quality monitoring can be achieved, constructing an efficient, reliable, and intelligent closed loop for water resource management. This minimizes the consumption of external pure water and greatly enhances the operational safety and service life of the electrolyzer 5 through a real-time water quality assurance mechanism.

[0070] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0071] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-pressure, high-purity hydrogen production and refueling integrated machine, comprising a base (1), an electrolyzer (5), two sets of hydrogen storage tanks (25), and a water circulation mechanism, characterized in that, The electrolytic cell (5) is located above the base (1), and the two sets of hydrogen storage tanks (25) and water circulation mechanism are all located above the base (1); The electrolytic cell (5) is provided with a water inlet (501), a hydrogen outlet (502), an oxygen outlet (503), and a hydrogen outlet (504). The water circulation mechanism includes a three-way pipe, two sets of filters (6), two sets of pure water tanks (9), a distributor (10), a water storage tank (11), a distributor (14), two raw water tanks (17), a support frame (18), and two sets of filters (19). The three-way pipe includes three ports, which are respectively connected to the inlet (501) and the two sets of filters (6). A solenoid valve (7) is installed on the pipeline connecting the three-way pipe and the two sets of filters (6). The bottom of the pure water tank (9) is provided with a water outlet one (901), a water outlet two (902) and two sets of spare interfaces. The top of the pure water tank (9) is provided with a water inlet (903), an air inlet (904) and an exhaust outlet (905). The pure water tank (9), the raw water tank (17) and the hydrogen storage tank (25) have the same structure. The two sets of filters (6) are respectively connected to the outlet (901) pipes of the two sets of pure water tanks (9), and a vacuum pump (8) is installed on the pipes connecting the filters (6) and the outlet (901). The first diverter (10) includes a main channel and several diverting channels. The first diverting channel of the first diverter (10) is connected to the inlet (903) pipe of the pure water tank (9). The water storage tank (11) is connected to the main channel of the first diverter (10). The second diverter (14) includes a main channel and several diverting channels. The outlet (902) of the pure water tank (9) is connected to the diverting channel of the second diverter (14) via a pipeline. A vacuum pump (15) is installed on the connecting pipeline between the outlet (902) and the second diverter (14). Two filters (19) are connected in series in each group. Each filter (19) is connected to the inlet (903) pipe of the raw water tank (17) and the outlet (902) pipe of the raw water tank (17). The filter section includes two filters (21) and two filters (22). The filters (21) and four filters (22) have the same structure, each including a top connection port and two bottom connection ports. The raw water tank (17) is connected to the top connection port of the filters (21). The top connection port of the filters (22) is connected to one bottom connection port of the filters (21). One bottom connection port of the filters (22) is connected to the water storage tank (11). The other bottom connection port of the filters (21) and the other bottom connection port of the filters (22) are connected to the exhaust port (905) of the raw water tank (17) through a three-way pipe. The oxygen outlet (503) of the electrolytic cell (5) is connected to a three-way pipe, which includes three ports. The three ports are respectively connected to the oxygen outlet (503) and the air inlets (904) of the two sets of pure water tanks (9). A condenser (12) is installed on the pipe connecting the three-way pipe to the oxygen outlet (503). A solenoid valve (13) is installed on the pipe connecting the three-way pipe to the air inlets (904) of the two sets of pure water tanks (9). The second solenoid valve (13) opens alternately, controlling the oxygen generated in the electrolytic cell (5) to alternately enter the pure water tank (9), increasing the pressure inside the pure water tank (9). With the assistance of air pressure, the first vacuum pump (8) pumps the water in the pure water tank (9) into the first filter (6), and after three-stage filtration, it enters the electrolytic cell (5). The gas in the pure water tank (9) is then discharged from the exhaust port (905), stabilizing the pressure inside the pure water tank (9) again.

2. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 1, characterized in that, The top of the base (1) is fixedly connected to the housing (2), the control cabinet (3) and the support frame (4). The control cabinet (3) is located on the side of the housing (2), the support frame (4) is located inside the housing (2), the electrolytic cell (5) is fixed on the top of the support frame (4), and a water circulation monitoring system is installed inside the control cabinet (3). The water circulation monitoring system is connected to the water circulation mechanism.

3. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 2, characterized in that, The second support frame (18) is fixed on the top of the base (1), and the two sets of filters (19) are fixed on the second support frame (18). The filter (19) is connected to the inlet (903) of the raw water tank (17) by a solenoid valve (20). The raw water tank (17) is connected to the filter (3) by a vacuum pump (23) and a solenoid valve (24) by a solenoid valve (5).

4. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 3, characterized in that, The vent (905) of the pure water tank (9) is connected to a drain pipe, and a solenoid valve (16) is installed on the drain pipe.

5. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 4, characterized in that, The hydrogen outlet 1 (502) of the electrolytic cell (5) is connected to the inlet (904) of the two sets of hydrogen storage tanks (25) through a three-way pipe. The connection method is the same as the connection method between the pure water tank (9) and the oxygen outlet (503) of the electrolytic cell (5). The connection pipe between the hydrogen outlet 1 (502) and the hydrogen storage tank (25) is equipped with a solenoid valve 6 (26) and a pressurizing pump (27). The exhaust port (905) of the hydrogen storage tank (25) is connected to a hydrogen filling head. The connection pipe between the hydrogen storage tank (25) and the hydrogen filling head is equipped with an air filter (28) and a solenoid valve 7 (29).

6. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 5, characterized in that, The outlet 2 (902) of the hydrogen storage tank (25) is connected in the same way as the outlet 2 (902) of the pure water tank (9), and both are connected to the diversion channel 2 of the diverter 2 (14) through a pipeline. A vacuum pump 2 (15) is installed on the connecting pipeline.

7. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 6, characterized in that, Water level sensors are installed in the pure water tank (9), the water storage tank (11), and the raw water tank (17); Water quality sensors are installed on the pipeline connecting filter 2 (19) to the raw water tank (17), the pipeline connecting filter 4 (22) to the water storage tank (11), and the pipeline connecting tee pipe 1 to inlet 1 (501). The water circulation monitoring system sets different water quality thresholds according to the filters at different locations, and then compares and analyzes the actual monitoring data and the water quality thresholds to determine the water quality after filtration.

8. The high-pressure, high-purity hydrogen production and refueling integrated machine according to claim 7, characterized in that, The working method of the high-pressure, high-purity hydrogen production and hydrogen refueling integrated machine: Step 1: Raw water supply and intelligent water replenishment; Step Two: Pure Water Preparation and Powered Oxygen Delivery; Step 3: Electrolytic hydrogen production and product processing; Step 4: Condensate recovery and closed-loop circulation; Step 5: Hydrogen storage and refueling.

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