Intelligent hydrogen production system and method

Abstract

The invention discloses an intelligent hydrogen production system and method.The intelligent hydrogen production system comprises a water supply device, a hydrogen production device, a purification device, a hydrogen conveying device, a pressure relief device, a system monitoring unit and a system control unit.The liquid level of a water tank is detected through a first liquid level meter, and the temperature of pure water of the water tank is detected through a first temperature sensor; the conductivity of water treated by the water machine is detected through the first conductivity meter so as to judge the purity degree of the water, the conductivity of electrolyzed water entering the electrolytic bath is detected through the second conductivity meter, the temperature of the electrolyzed water in the electrolytic bath is detected through the second temperature sensor, and it is guaranteed that the water quality and the water temperature in the electrolytic bath meet the electrolysis requirement. The liquid level of separated water in the water-vapor separator is detected through the second liquid level meter, the dew-point temperature of hydrogen is detected through the dew-point meter, and the actual output flow of hydrogen flowing through the hydrogen outlet is detected through the flow meter. The water temperature, the water level, the hydrogen flow, the conductivity and the like can be monitored, safe and efficient operation of equipment is ensured, and potential safety hazards are prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen production by electrolysis, and in particular to an intelligent hydrogen production system and method. Background Art

[0002] With the rapid development of the hydrogen energy industry, hydrogen production equipment is increasingly used in industries such as industry and energy. At present, most hydrogen production equipment uses proton exchange membrane technology to produce high-purity hydrogen through water electrolysis. Users are increasingly concerned about the intelligence, safety and remote control capabilities of hydrogen production equipment. However, during operation, traditional hydrogen production equipment often lacks real-time monitoring and alarm functions for operating status, and is prone to equipment failure or safety accidents due to abnormal water temperature, abnormal hydrogen output pressure, and substandard water quality. Summary of the invention The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an intelligent hydrogen production system and method, which can monitor water temperature, water level, hydrogen flow rate and conductivity, ensure the safe and efficient operation of the equipment, and prevent safety hazards.

[0003] According to a first aspect of an embodiment of the present invention, an intelligent hydrogen production system comprises: a water supply device, a hydrogen production device, a purification device, a hydrogen transmission device, a pressure relief device, a system monitoring unit, and a system control unit, wherein the system monitoring unit is interconnected with the system control unit; The water supply device comprises a water machine, a water inlet valve, a water tank and a circulating water pump connected in sequence, the water machine is provided with a first conductivity meter, the water tank is provided with a first liquid level meter, a first temperature sensor, a heating rod and a first drain valve, the system monitoring unit is respectively connected to the first conductivity meter, the first liquid level meter and the first temperature sensor, the system control unit is respectively connected to the water inlet valve, the first drain valve and the heating rod, the system monitoring unit is configured to collect the liquid level of the water tank detected by the first liquid level meter, the pure water temperature of the water tank detected by the first temperature sensor, and the conductivity of the water treated by the water machine detected by the first conductivity meter, and the system control unit is configured to control the opening and closing of the water inlet valve and the first drain valve according to the liquid level of the water tank, and control the start and stop of the heating rod according to the pure water temperature of the water tank; The hydrogen production device comprises an electrolyzer, wherein the electrolyzer has an electrolyzer inlet, an electrolyzer hydrogen water outlet, an electrolyzer oxygen water outlet, a second conductivity meter and a second temperature sensor, wherein the electrolyzer water inlet is connected to the circulating water pump, and the electrolyzer oxygen water outlet is connected to the water tank, and the system monitoring unit is respectively connected to the second conductivity meter and the second temperature sensor, and the system monitoring unit is configured to collect the conductivity of the electrolyzer water entering the electrolyzer detected by the second conductivity meter, and the temperature of the electrolyzer water in the electrolyzer detected by the second temperature sensor; The purification device comprises a water vapor separator and a purifier, wherein the water vapor separator is provided with an air inlet, an air outlet, a second liquid level gauge, and a water outlet, wherein the air inlet is connected to the hydrogen-water outlet of the electrolyzer, the water outlet is provided with a second drain valve, the inlet end of the purifier is connected to the air outlet, the system monitoring unit is connected to the second liquid level gauge, the system control unit is connected to the second drain valve, the system monitoring unit is configured to collect the liquid level of precipitated water in the water vapor separator detected by the second liquid level gauge, and the system control unit is configured to control the opening and closing of the second drain valve according to the liquid level of the precipitated water; The hydrogen delivery device comprises a back pressure valve, a flow meter and a hydrogen outlet connected in sequence, the inlet end of the back pressure valve is connected to the outlet end of the purifier, the downstream side of the back pressure valve is connected to a dew point meter, the system monitoring unit is connected to the flow meter and the dew point meter respectively, the system control unit is connected to the back pressure valve, the system monitoring unit is configured to collect the dew point temperature of hydrogen detected by the dew point meter, the actual output flow rate of hydrogen flowing through the hydrogen outlet detected by the flow meter, and the system control unit is configured to adjust the opening of the back pressure valve according to a preset pressure value; The pressure relief device includes a pressure transmitter and a pressure relief valve, wherein the inlet ends of the pressure transmitter and the pressure relief valve are respectively connected to the outlet end of the purifier, the system monitoring unit is connected to the pressure transmitter, and the system control unit is connected to the pressure relief valve. The system monitoring unit is configured to collect the pressure value of the outflowing hydrogen gas flow from the purifier detected by the pressure transmitter, and the system control unit is configured to compare the pressure value of the outflowing hydrogen gas flow with a reference pressure value and control the opening and closing of the pressure relief valve according to the comparison result.

[0004] The intelligent hydrogen production system according to the embodiment of the present invention has at least the following beneficial effects: During the operation of the system, the present invention detects the liquid level of the water tank through the first liquid level meter to control the opening and closing of the water inlet valve and the first drain valve, so that the liquid level of the water tank is maintained in the first preset liquid level range, detects the pure water temperature of the water tank through the first temperature sensor to control the start and stop of the heating rod, so that the pure water temperature of the water tank is maintained in the first preset temperature range, detects the conductivity of the water treated by the water machine through the first conductivity meter to determine the purity of the water, detects the conductivity of the electrolyzed water entering the electrolytic cell through the second conductivity meter, and detects the temperature of the electrolyzed water in the electrolytic cell through the second temperature sensor to ensure that the water quality and temperature in the electrolytic cell are within the electrolysis requirements, and detects the liquid level of the precipitated water in the water vapor separator through the second liquid level meter to control the second drain valve. Open and close to maintain the normal operation of the water vapor separator, detect the dew point temperature of hydrogen through a dew point meter to determine the dryness of the hydrogen, detect the actual output flow of hydrogen flowing through the hydrogen outlet through a flow meter to ensure that the flow is within the set range, ensure the stable operation of the system and subsequent process requirements, and maintain the hydrogen pressure in the hydrogen transmission device stable by adjusting the opening of the back pressure valve to ensure that the pressure of the hydrogen output by the device is within a stable range; detect the pressure value of the outflowing hydrogen flow from the purifier through a pressure transmitter to control the opening and closing of the pressure relief valve to eliminate the safety hazards caused by the high pressure of the hydrogen flow. The present invention can realize the monitoring of water temperature, water level, hydrogen flow and conductivity, ensure the safe and efficient operation of the equipment, and prevent safety hazards.

[0005] According to some embodiments of the present invention, the pressure relief device also includes a water seal, an inlet end of the water seal is connected to the outlet end of the pressure relief valve, the water seal is provided with a third liquid level gauge and a third drain valve, the system monitoring unit is connected to the third liquid level gauge, the system control unit is connected to the third drain valve, the system monitoring unit is configured to collect the liquid level of the water seal detected by the third liquid level gauge, and the system control unit is configured to control the opening and closing of the third drain valve according to the liquid level of the water seal.

[0006] According to some embodiments of the present invention, the pressure relief device further includes a flame arrester connected to an outlet end of the water seal.

[0007] According to some embodiments of the present invention, the intelligent hydrogen production system further includes a wastewater pipeline, and the wastewater pipeline is respectively connected to the first drain valve, the second drain valve, and the third drain valve.

[0008] According to some embodiments of the present invention, the pressure relief device further comprises a one-way valve, wherein the one-way valve is disposed between the pressure relief valve and the purifier, and a flow direction of the one-way valve is from the purifier to the pressure relief valve.

[0009] According to some embodiments of the present invention, the hydrogen production device also includes a flow switch, which is installed at the electrolyzed water inlet and connected to the system control unit. The system control unit is configured to adjust the opening of the flow switch according to a preset hydrogen transmission requirement.

[0010] According to some embodiments of the present invention, the system monitoring unit is provided with a display screen, and the system control unit includes a manual operation console.

[0011] According to some embodiments of the present invention, the intelligent hydrogen production system also includes a wireless transmission unit and a remote control terminal. The remote control terminal is connected to the system control unit via the wireless transmission unit. The remote control terminal includes a data display module, a remote control operation panel and a remote alarm module.

[0012] According to some embodiments of the present invention, the intelligent hydrogen production system further includes an alarm unit, which is connected to the system control unit. The system control unit is configured to perform a rated difference analysis between the data collected by the system monitoring unit and the original reference value of the system to control the alarm unit.

[0013] According to a second aspect of an embodiment of the present invention, an intelligent hydrogen production method is applicable to the intelligent hydrogen production system, and the intelligent hydrogen production method includes: Detecting the conductivity of the water treated by the water machine to determine whether the purity of the water is within a preset purity range, and delivering the water treated by the water machine to a water tank; Controlling the opening and closing of the water inlet valve and the first drain valve, and controlling the start and stop of the heating rod, so that the liquid level of the water tank is maintained within a first preset liquid level range, and the pure water temperature is maintained within a first preset temperature range; According to the preset hydrogen delivery requirement, the pure water in the water tank is transported to the electrolyzer according to the preset water volume for electrolysis hydrogen production, and the conductivity and temperature of the electrolyzed water in the electrolyzer are detected to ensure that the water quality and water temperature in the electrolyzer are within the electrolysis requirements; The hydrogen-water mixed gas and the oxygen-water mixed gas generated after electrolysis are transported to the water vapor separator and the water tank respectively; The hydrogen-water mixed gas is separated into gas and liquid by the water vapor separator, and the separated hydrogen is further purified by the purifier, and the opening and closing of the second drain valve is controlled so that the liquid level of the precipitated water in the water vapor separator is maintained within a second preset liquid level range; Controlling the back pressure valve to keep the hydrogen purified by the purifier at a preset pressure value for output, and detecting the dew point temperature of the hydrogen output and the actual output flow rate of the hydrogen; By controlling the opening and closing of the pressure relief valve, the pressure value of the hydrogen gas flow out of the purifier is maintained within a preset pressure range.

[0014] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 It is a structural schematic diagram of the intelligent hydrogen production system of the present invention; Figure 2 A system monitoring control diagram of the intelligent hydrogen production system of the present invention; Figure 3 It is a schematic diagram of the structure of the purifier of the present invention; Figure 4 A schematic diagram of monitoring, control, alarm and remote control components of the intelligent hydrogen production system of the present invention; Figure 5 is a flow chart of the steps of the intelligent hydrogen production method of the present invention; Figure Number: 100, water supply device; 110, water machine; 111, first conductivity meter; 112, water inlet valve; 120, water tank; 121, first temperature sensor; 122, heating rod; 123, exhaust port; 1231, drain pipe; 124, first liquid level meter; 125, first drain valve; 126, oxygen water inlet; 130, circulating water pump; 140, filter; 200, hydrogen production device; 210, electrolytic cell; 211, electrolytic water inlet; 212, electrolytic cell hydrogen water outlet; 213, electrolytic cell oxygen water outlet; 214, second temperature sensor; 220, flow switch; 230, second conductivity meter; 300, purification device; 310, water vapor separator; 311, air inlet; 312, air outlet; 313, second liquid level gauge; 314, water outlet; 315, second drain valve; 320, purifier; 321, tower A; 322, tower B; 400, hydrogen delivery device; 410, back pressure valve; 420, dew point meter; 430, flow meter; 440, hydrogen output port; 500, pressure relief device; 510, water seal; 511, third liquid level gauge; 512, third drain valve; 520, one-way valve 530, pressure transmitter; 540, pressure relief valve; 550, flame arrester; 10. System monitoring unit; 11. Display screen; 20. System control unit; 21. Manual operation console; 30. Alarm unit; 40. Wireless transmission unit; 50. Remote control terminal; 51. Data display module; 52. Remote control operation panel; 53. Remote alarm module. DETAILED DESCRIPTION

[0016] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0019] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0020] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0021] With the rapid development of the hydrogen energy industry, hydrogen production equipment is increasingly used in industries such as industry and energy. At present, most hydrogen production equipment uses proton exchange membrane technology to produce high-purity hydrogen through water electrolysis. Users are increasingly concerned about the intelligence, safety and remote control capabilities of hydrogen production equipment. However, during operation, traditional hydrogen production equipment often lacks real-time monitoring and alarm functions for the operating status, and is prone to equipment failure or safety accidents due to abnormal water temperature, abnormal hydrogen output pressure, and substandard water quality. At the same time, with the rapid popularization of the Industrial Internet of Things, how to achieve remote control of hydrogen production equipment has also become an important issue that needs to be solved urgently.

[0022] Furthermore, the present invention proposes an intelligent hydrogen production system that can monitor water temperature, water level, hydrogen flow rate, conductivity, etc., and promptly alarm abnormal situations to ensure safe and efficient operation of the equipment and prevent safety hazards.

[0023] like Figure 1As shown, the intelligent hydrogen production system of the embodiment of the present invention includes a water supply device 100, a hydrogen production device 200, a purification device 300, a hydrogen transmission device 400, a pressure relief device 500, a system monitoring unit 10 and a system control unit 20.

[0024] Among them, the water supply device 100 of the embodiment of the present invention includes a water machine 110, a water inlet valve 112, a water tank 120 and a circulating water pump 130 connected in sequence. The water machine 110 is provided with a first conductivity meter 111, and the water tank 120 is provided with a first liquid level meter 124, a first temperature sensor 121, a heating rod 122 and a first drain valve 125. The first drain valve 125 is used to discharge waste water. During operation, the water machine 110 provides pure water to the water tank 120, and the heating rod 122 heats the water in the water tank 120, and then transports it out through the circulating water pump 130.

[0025] The first liquid level meter 124 is used to detect the liquid level of the water tank 120, the first temperature sensor 121 is used to detect the pure water temperature of the water tank 120, and the first conductivity meter 111 is used to detect the conductivity of the water treated by the water machine 110, so as to judge the purity of the water. The water tank 120 of the embodiment of the present invention is provided with a minimum liquid level threshold and a maximum liquid level threshold. When the liquid level in the water tank 120 is less than the minimum liquid level threshold, the water inlet valve 112 is opened, and when the liquid level in the water tank 120 is greater than the maximum liquid level threshold, the first drain valve 125 is opened.

[0026] The water tank 120 of the embodiment of the present invention is further provided with an exhaust port 123 and an oxygen water inlet 126 . The oxygen water inlet 126 is used for returning water, and the exhaust port 123 is used for exhausting air.

[0027] like Figure 2 As shown, the system monitoring unit 10 is respectively connected to the first conductivity meter 111, the first liquid level meter 124, and the first temperature sensor 121, and the system control unit 20 is respectively connected to the water inlet valve 112, the first drain valve 125, and the heating rod 122. During operation, the liquid level of the fluid in the water tank 120 is monitored by the first liquid level meter 124, and the obtained liquid level data is transmitted to the system control unit 20 via the system monitoring unit 10. After the aforementioned liquid level data is processed by the system control unit 20, the water inlet and drain signals are transmitted to the water inlet valve 112 and the first drain valve 125 to control the opening and closing of the water inlet valve 112 and the first drain valve 125, so as to control the liquid level in the water tank 120 to be maintained within a certain safety range. The pure water temperature in the water tank 120 is monitored in real time by the first temperature sensor 121, and the obtained real-time temperature data is transmitted to the system control unit 20 via the system detection unit 10 to control the start and stop of the heating rod 122 to adjust the pure water temperature.

[0028] like Figure 1As shown, the hydrogen production device 200 includes an electrolyzer 210, which has an electrolytic water inlet 211, an electrolytic water outlet 212, an electrolytic water outlet 213, a second conductivity meter 230 and a second temperature sensor 214. The electrolytic water inlet 211 is connected to the circulating water pump 130, and the electrolytic water outlet 213 is connected to the oxygen water inlet 126.

[0029] like Figure 2 As shown, the system monitoring unit 10 of the embodiment of the present invention is respectively connected to the second conductivity meter 230 and the second temperature sensor 214. The second conductivity meter 230 is used to detect the conductivity of the electrolyzed water entering the electrolytic cell 210, and the second temperature sensor 214 is used to detect the temperature of the electrolyzed water in the electrolytic cell 210 to ensure that the water quality and temperature in the electrolytic cell 210 are within the electrolysis requirements.

[0030] like Figure 1 As shown, in the embodiment of the present invention, a filter 140 and a flow switch 220 are arranged between the circulating water pump 130 and the electrolytic water inlet 211. The circulating water pump 130 delivers the pure water heated in the water tank 120 to the filter 140 for further filtration, and the water filtered by the filter 140 enters the hydrogen production device 200 to start electrolytic hydrogen production. The flow switch 220 adjusts the water inlet opening according to the hydrogen transmission requirements to allow the pure water provided by the water supply device 100 to enter the electrolytic cell 210 through the electrolytic water inlet 211 for electrolysis.

[0031] like Figure 2 As shown, the flow switch 220 of the embodiment of the present invention is connected to the system control unit 20, and the system control unit 20 is configured to adjust the opening of the flow switch 220 according to the preset hydrogen transmission requirement.

[0032] After electrolysis, water produces hydrogen water and oxygen water. The oxygen water is connected to the oxygen water inlet 126 through the oxygen water outlet 213, and the water is transported back to the water tank 120 for recycling, while the oxygen is discharged through the exhaust port 123 set on the water tank 120 through the exhaust pipe 1231; the hydrogen water enters the purification device 300 through the hydrogen water outlet 212 for purification and separation.

[0033] like Figure 1 As shown, the purification device 300 of the embodiment of the present invention includes a water vapor separator 310 and a purifier 320 connected in sequence, the water vapor separator 310 is provided with an air inlet 311, an air outlet 312, a second liquid level gauge 313, and a water outlet 314, the air inlet 311 is connected to the hydrogen water outlet 212 of the electrolyzer, the water outlet 314 is provided with a second drain valve 315, the second drain valve 315 is used to discharge waste water, and the inlet end of the purifier 320 is connected to the air outlet 312.

[0034] like Figure 1As shown, the hydrogen-water mixed gas produced by the hydrogen production device 200 enters the water vapor separator 310 through the gas inlet 311, and the gas-liquid separation is achieved through the water vapor separation component in the water vapor separator 310. The separated gas is transmitted to the purifier 320 through the gas outlet 312 for further purification treatment, and the separated water is stored at the bottom of the water vapor separator 310 due to gravity, and forms a certain water level through time accumulation.

[0035] like Figure 2 As shown, the system monitoring unit 10 is connected to the second liquid level meter 313, and the system control unit 20 is connected to the second drain valve 315. The second liquid level meter 313 is used to detect the liquid level of the precipitated water in the water vapor separator 120. The obtained liquid level data is transmitted to the system control unit 20 via the system monitoring unit 10. After the aforementioned liquid level data is processed by the system control unit 20, the drainage signal is transmitted to the second drain valve 315 to control the opening and closing of the second drain valve 315, and then the precipitated water is discharged from the water outlet 314 through the second drain valve 315 to the outside.

[0036] The water vapor separator 310 of the embodiment of the present invention is provided with a maximum liquid level threshold. When the liquid level in the water vapor separator 310 is greater than the maximum liquid level threshold, the second drain valve 315 is opened.

[0037] like Figure 3 As shown, the purifier 320 of the embodiment of the present invention is provided with a double-tower dehydration tank, one is a tower A 321, and the other is a tower B 322, and the double-tower dehydration tank is in a series state.

[0038] The hydrogen transport device 400 of the embodiment of the present invention is connected to the purifier 320 of the purification device 300 to output the hydrogen generated by the hydrogen system.

[0039] like Figure 1 As shown, the hydrogen transmission device 400 includes a back pressure valve 410, a flow meter 430 and a hydrogen outlet 440 connected in sequence, the inlet end of the back pressure valve 410 is connected to the outlet end of the purifier 320, and the downstream side of the back pressure valve 410 is connected to a dew point meter 420, the system control unit 20 is connected to the back pressure valve 410, the back pressure valve 410 is used to maintain the hydrogen pressure in the hydrogen transmission device 400 stable, and automatically adjusts to open and close according to the set pressure value during the operation of the system to ensure that the pressure of the hydrogen output by the device is within a stable range, the system monitoring unit 10 is respectively connected to the flow meter 430 and the dew point meter 420, the dew point meter 420 is used to detect the water content of hydrogen, and by measuring the dew point temperature, the dryness of the hydrogen can be determined to ensure that the hydrogen is dried to the required standard before use to avoid the influence of moisture on subsequent equipment or processes, and the flow meter 430 is used to monitor the actual flow of hydrogen through the pipeline in real time to ensure that the flow is within the set range to ensure the stable operation of the system and the subsequent process requirements.

[0040] The pressure relief device 500 of the embodiment of the present invention is connected to the purifier 320 to eliminate the potential safety hazard caused by the high pressure of the hydrogen gas flow and has the function of pressure relief protection.

[0041] like Figure 1 As shown, the pressure relief device 500 includes a pressure transmitter 530 and a pressure relief valve 540. The inlet end of the pressure transmitter 530 is connected to the outlet end of the purifier 320 through a pipeline and a connecting vessel. The system monitoring unit 10 is connected to the pressure transmitter 530. The pressure transmitter 530 can detect the pressure value of the hydrogen flow flowing out of the purifier 320.

[0042] like Figure 2 As shown, the system control unit 20 is connected to the pressure relief valve 540, and the system control unit 20 is configured to compare the pressure value of the outflowing hydrogen flow with the reference pressure value and control the opening and closing of the pressure relief valve 540 according to the comparison result to achieve pressure relief.

[0043] Furthermore, if Figure 1 As shown, the pressure relief device 500 of the embodiment of the present invention also includes a water seal 510, which can store hydrogen. The inlet end of the water seal 510 is connected to the outlet end of the pressure relief valve 540, and the outlet end of the water seal 510 is connected to the outside. The water seal 510 is provided with a third liquid level gauge 511 and a third drain valve 512, the system monitoring unit 10 is connected to the third liquid level gauge 511, and the system control unit 20 is connected to the third drain valve 512.

[0044] The third liquid level meter 511 is used to monitor the liquid level of water in the water seal 510. The obtained liquid level data is transmitted to the system control unit 20 via the system monitoring unit 10. After the aforementioned liquid level data is processed by the system control unit 20, the drainage signal is transmitted to the third drain valve 512 to control the opening and closing of the third drain valve 512 to discharge excess water in the water seal to the outside.

[0045] The water level of the water seal 510 needs to be kept stable to ensure that the water level is not too low or overflowing during normal operation; when the water level is too low, gas may escape and the water seal function may be lost; and when the water level is too high, the system resistance will increase or liquid may overflow.

[0046] In addition, the pressure relief device 500 further includes a flame arrester 550 , which is connected to the outlet end of the water seal 510 to achieve a fire arresting effect.

[0047] The pressure relief device 500 of the embodiment of the present invention further includes a one-way valve 520, which is disposed between the pressure transmitter 530 and the pressure relief valve 540. The flow direction of the one-way valve 520 is from the purifier 320 to the pressure relief valve 540. The one-way valve 520 allows hydrogen to flow in a certain direction to avoid cross-flow.

[0048] The intelligent hydrogen production system of the embodiment of the present invention further includes a wastewater pipeline, which is respectively connected to the first drain valve 125, the second drain valve 315, and the third drain valve 512 to achieve unified recovery of wastewater.

[0049] like Figure 4 As shown, the system monitoring unit 10 of the embodiment of the present invention is provided with a display screen 11 for real-time display of component parameters in system operation, and the system control unit 20 includes a manual operation console 21 for manual control.

[0050] like Figure 2 and Figure 4 As shown, the intelligent hydrogen production system of the embodiment of the present invention also includes a wireless transmission unit 40 and a remote control terminal 50. The remote control terminal 50 is connected to the system control unit 20 via the wireless transmission unit 40. The remote control terminal 50 includes a data display module 51, a remote control operation panel 52 and a remote alarm module 53 to realize remote control and monitoring alarm.

[0051] Furthermore, Figure 2 As shown, the intelligent hydrogen production system of the embodiment of the present invention also includes an alarm unit 30, which is connected to the system control unit 20. The system control unit 20 is configured to perform rated difference analysis on the data collected by the system monitoring unit 10 and the original reference value of the system to control the alarm unit 30.

[0052] It can be understood that the system monitoring unit 10 collects and organizes the monitored pure water conductivity of the water machine 110, the water temperature of the water tank 120, the liquid level of the water tank 120, the pure water conductivity of the electrolyzer 210, the operating temperature of the electrolyzer 210, the liquid level of the water vapor separator 310, the liquid level of the water seal 510, the output hydrogen pressure, the output hydrogen humidity and the output hydrogen flow data, and then transmits the information fed back by each monitoring component to the system control unit 20 for rated difference analysis with the original reference value of the system, controls the relevant components to perform relevant operations, and ensures the normal operation of the system.

[0053] like Figure 5 As shown, the present invention also proposes an intelligent hydrogen production method, the specific steps of which include: Step S100: Detect the conductivity of the water treated by the water machine 110 to determine whether the purity of the water is within a preset purity range, and transport the water treated by the water machine 110 to the water tank 120; here, the pure water entering the water tank 120 is controlled by the water inlet valve 112.

[0054] Step S200: Control the opening and closing of the water inlet valve 112 and the first drain valve 125, and control the start and stop of the heating rod 122, so that the liquid level of the water tank 120 is maintained within a first preset liquid level range, and the pure water temperature is maintained within a first preset temperature range; Step S300: transporting the pure water in the water tank 120 to the electrolyzer 210 according to the preset hydrogen delivery requirement to produce hydrogen by electrolysis, detecting the conductivity and temperature of the electrolyzed water in the electrolyzer 210 to ensure that the water quality and temperature in the electrolyzer 210 are within the electrolysis requirements; In this step, the amount of pure water delivered to the electrolytic cell 210 is controlled by the flow switch 220 .

[0055] Step S400: The hydrogen-water mixed gas and the oxygen-water mixed gas generated after electrolysis are respectively transported to the water vapor separator 310 and the water tank 120; Step S500: The hydrogen-water mixed gas is separated into gas and liquid by the water vapor separator 310, and the separated hydrogen is further purified by the purifier 320, and the opening and closing of the second drain valve 315 is controlled so that the liquid level of the precipitated water in the water vapor separator 120 is maintained within the second preset liquid level range; Step S600: Control the back pressure valve 410 to keep the hydrogen purified by the purifier 320 at a preset pressure value for output, and detect the dew point temperature of the hydrogen output and the actual output flow rate of the hydrogen; Step S700: By controlling the opening and closing of the pressure relief valve 540, the pressure value of the hydrogen gas flow out of the purifier 320 is maintained within a preset pressure range.

[0056] In step S700, the liquid level of water in the water seal 510 is kept stable by controlling the opening and closing of the third drain valve 512.

[0057] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An intelligent hydrogen production system, characterized in that: include: Water supply device, hydrogen production device, purification device, hydrogen transmission device, pressure relief device, system monitoring unit, system control unit; The water supply device comprises a water machine, a water inlet valve, a water tank and a circulating water pump connected in sequence, the water machine is provided with a first conductivity meter, the water tank is provided with a first liquid level meter, a first temperature sensor, a heating rod and a first drain valve, the system monitoring unit is configured to collect the liquid level of the water tank detected by the first liquid level meter, the pure water temperature of the water tank detected by the first temperature sensor, and the conductivity of the water treated by the water machine detected by the first conductivity meter, and the system control unit is configured to control the opening and closing of the water inlet valve and the first drain valve according to the liquid level of the water tank, and control the start and stop of the heating rod according to the pure water temperature of the water tank; The hydrogen production device comprises an electrolyzer, the electrolyzer having an electrolyzer water inlet, an electrolyzer hydrogen water outlet, an electrolyzer oxygen water outlet, a second conductivity meter and a second temperature sensor, the electrolyzer water inlet is connected to the circulating water pump, the electrolyzer oxygen water outlet is connected to the water tank, and the system monitoring unit is configured to collect the conductivity of the electrolyzer water entering the electrolyzer detected by the second conductivity meter, and the temperature of the electrolyzer water in the electrolyzer detected by the second temperature sensor; The purification device comprises a water vapor separator and a purifier, wherein the water vapor separator is provided with an air inlet, an air outlet, a second liquid level gauge, and a water outlet, wherein the air inlet is connected to the hydrogen-water outlet of the electrolyzer, the water outlet is provided with a second drain valve, the inlet end of the purifier is connected to the air outlet, the system monitoring unit is configured to collect the liquid level of the precipitated water in the water vapor separator detected by the second liquid level gauge, and the system control unit is configured to control the opening and closing of the second drain valve according to the liquid level of the precipitated water; The hydrogen delivery device comprises a back pressure valve, a flow meter and a hydrogen outlet connected in sequence, the inlet end of the back pressure valve is connected to the outlet end of the purifier, the downstream side of the back pressure valve is connected to a dew point meter, the system monitoring unit is configured to collect the dew point temperature of hydrogen detected by the dew point meter, the actual output flow rate of hydrogen flowing through the hydrogen outlet detected by the flow meter, and the system control unit is configured to adjust the opening of the back pressure valve according to a preset pressure value; The pressure relief device includes a pressure transmitter and a pressure relief valve, wherein the inlet ends of the pressure transmitter and the pressure relief valve are respectively connected to the outlet end of the purifier, the system monitoring unit is configured to collect the pressure value of the outflowing hydrogen gas flow from the purifier detected by the pressure transmitter, and the system control unit is configured to compare the pressure value of the outflowing hydrogen gas flow with a reference pressure value and control the opening and closing of the pressure relief valve according to the comparison result.

2. The intelligent hydrogen production system according to claim 1, characterized in that: The pressure relief device also includes a water seal, an inlet end of the water seal is connected to the outlet end of the pressure relief valve, the water seal is provided with a third liquid level gauge and a third drain valve, the system monitoring unit is configured to collect the liquid level of the water seal detected by the third liquid level gauge, and the system control unit is configured to control the opening and closing of the third drain valve according to the liquid level of the water seal.

3. The intelligent hydrogen production system according to claim 2, characterized in that: The pressure relief device further comprises a flame arrester, and the flame arrester is connected to the outlet end of the water seal.

4. The intelligent hydrogen production system according to claim 1, characterized in that: The intelligent hydrogen production system also includes a wastewater pipeline, which is connected to the first drain valve, the second drain valve, and the third drain valve respectively.

5. The intelligent hydrogen production system according to claim 1, characterized in that: The pressure relief device further comprises a one-way valve, which is arranged between the pressure relief valve and the purifier, and the flow direction of the one-way valve is from the purifier to the pressure relief valve.

6. The intelligent hydrogen production system according to claim 1, characterized in that: The hydrogen production device further includes a flow switch, which is installed at the electrolyzed water inlet, and the system control unit is configured to adjust the opening of the flow switch according to a preset hydrogen transmission requirement.

7. The intelligent hydrogen production system according to claim 1, characterized in that: The system monitoring unit is provided with a display screen, and the system control unit includes a manual operation console.

8. The intelligent hydrogen production system according to claim 1, characterized in that: The intelligent hydrogen production system further includes a wireless transmission unit and a remote control terminal. The remote control terminal is connected to the system control unit via the wireless transmission unit. The remote control terminal includes a data display module, a remote control operation panel and a remote alarm module.

9. The intelligent hydrogen production system according to claim 1, characterized in that: The intelligent hydrogen production system further includes an alarm unit, which is connected to the system control unit. The system control unit is configured to perform a rated difference analysis between the data collected by the system monitoring unit and the original reference value of the system to control the alarm unit.

10. An intelligent hydrogen production method, characterized in that: Applicable to the intelligent hydrogen production system according to any one of claims 1 to 9, the intelligent hydrogen production method comprising: Detecting the conductivity of the water treated by the water machine to determine whether the purity of the water is within a preset purity range, and delivering the water treated by the water machine to a water tank; Controlling the opening and closing of the water inlet valve and the first drain valve, and controlling the start and stop of the heating rod, so that the liquid level of the water tank is maintained within a first preset liquid level range, and the pure water temperature is maintained within a first preset temperature range; According to the preset hydrogen delivery requirement, the pure water in the water tank is transported to the electrolyzer according to the preset water volume for electrolysis hydrogen production, and the conductivity and temperature of the electrolyzed water in the electrolyzer are detected to ensure that the water quality and water temperature in the electrolyzer are within the electrolysis requirements; The hydrogen-water mixed gas and the oxygen-water mixed gas generated after electrolysis are transported to the water vapor separator and the water tank respectively; The hydrogen-water mixed gas is separated into gas and liquid by the water vapor separator, and the separated hydrogen is further purified by the purifier, and the opening and closing of the second drain valve is controlled so that the liquid level of the precipitated water in the water vapor separator is maintained within a second preset liquid level range; Controlling the back pressure valve to keep the hydrogen purified by the purifier at a preset pressure value for output, and detecting the dew point temperature of the hydrogen output and the actual output flow rate of the hydrogen; By controlling the opening and closing of the pressure relief valve, the pressure value of the hydrogen gas flow out of the purifier is maintained within a preset pressure range.

Images