Remote operation and maintenance platform and operation and maintenance method for thousand-square-level alkaline water electrolysis hydrogen production system

Abstract

The remote operation and maintenance platform comprises an equipment layer, a cloud platform, a platform layer and an application layer, the equipment layer comprises thousand-square-level hydrogen production equipment, and a sensor for monitoring equipment operation and a PLC for controlling equipment operation are installed in the thousand-square-level hydrogen production equipment; the cloud platform is provided with a public cloud or a private cloud, the platform layer is provided with a private cloud server or a local server, the application layer is provided with a local display terminal and a mobile display terminal, both the cloud platform and the platform layer are deployed with Web configuration software, and the equipment layer, the cloud platform and the platform layer are communicated through a wireless internet of things. The cloud platform is communicated with the local display terminal and the mobile display terminal through the wireless Internet of Things, the platform layer is communicated with the local display terminal through a wired private network, the PLC collects data signals transmitted by the sensor and transmits the data signals to the cloud platform and the platform layer, and the platform layer restores the field of the thousand-party-level hydrogen production and water electrolysis hydrogen production system in a mirroring mode.

Description

Technical Field

[0001] The present invention belongs to the technical field of oilfield refining and chemical alkaline water electrolysis hydrogen production, and relates to a remote operation and maintenance platform and an operation and maintenance method for a thousand-cubic-meter-level alkaline water electrolysis hydrogen production system. Background Art

[0002] There is a high demand for hydrogen in oilfield refining applications, but the current sources of hydrogen for the oilfield refining industry are mainly "blue hydrogen" produced from natural gas and "gray hydrogen" from petrochemicals. Alkaline water electrolysis to produce hydrogen is less used in the oil and gas field. my country's oil and gas resource-rich areas are located in northwestern regions such as Xinjiang, Qinghai, and Inner Mongolia. The region also has rich wind and solar resources, but new energy sources such as wind and light cannot be stored for a long time and consumed on-site. Therefore, it has brought new development directions for the electrolysis of water in oil fields to produce "green hydrogen". Wind and solar power generation can be used for alkaline water electrolysis to produce "green hydrogen". After compression by a compressor, the hydrogen is transported to the refinery through a hydrogen pipeline to participate in the refining reaction.

[0003] Hydrogen production equipment is an industrial equipment for producing hydrogen as a new energy source. During the production process, key production indicators such as oxygen content in hydrogen, hydrogen dew point, system pressure, operating voltage, and operating current are not only related to the safe production and operation of hydrogen production equipment, but also to the stable operation of the refining and chemical links. Whether the hydrogen production equipment can operate stably is crucial to the subsequent refining and chemical processing. At present, the operation and maintenance of a single thousand-cubic-meter equipment is mainly manual operation and on-site inspection, which is time-consuming and labor-intensive, and has low operation and maintenance efficiency. Summary of the Invention

[0004] One purpose of the present invention is to provide a remote operation and maintenance platform for a thousand-cubic-meter alkaline water electrolysis hydrogen production system, which solves the problem that the oilfield refining industry is unable to remotely image and restore and monitor the operating status of the thousand-cubic-meter alkaline water electrolysis hydrogen production equipment, thereby realizing remote control and real-time grasp of equipment fault information.

[0005] Another object of the present invention is to provide an operation and maintenance method for a remote operation and maintenance platform for a thousand-cubic-meter alkaline water electrolysis hydrogen production system.

[0006] The first technical solution adopted in the present invention is a remote operation and maintenance platform for a thousand-cubic-meter alkaline water electrolysis hydrogen production system, which includes a device layer, a cloud platform, a platform layer and an application layer. The device layer is provided with a thousand-cubic-meter hydrogen production equipment, and the thousand-cubic-meter hydrogen production equipment is installed with valves for controlling the operation of the equipment, sensors for monitoring the operating status of the equipment and multi-function power meters, as well as a PLC controller for controlling the operation of the equipment. The cloud platform is provided with a public cloud or a private cloud, the platform layer is provided with a private cloud server or a local server, the application layer is provided with a local display terminal and a mobile display terminal, and both the cloud platform and the platform layer are deployed with Web configuration software. The device layer, cloud platform and platform layer are connected through a wireless Internet of Things network, and the cloud platform is also connected to the local display terminal and the mobile display terminal respectively through a wireless Internet of Things network, and the platform layer is connected to the local display terminal through a wired dedicated network.

[0007] The thousand-cubic-meter hydrogen production equipment includes a hydrogen production control system, high and low voltage distribution skids, a rectifier system, an electrolyzer, a gas-liquid separation device, a purification device and auxiliary equipment. The PLC controller is set in the hydrogen production control system and is connected to an edge layer data gateway. The PLC controller is connected to the high and low voltage distribution skids, the rectifier system, the electrolyzer, the gas-liquid separation device, the purification device and auxiliary equipment through signal lines respectively. The edge layer data gateway is connected to the cloud platform and the platform layer through a wireless Internet of Things network.

[0008] The high and low voltage distribution skid is equipped with voltage transformers, current transformers and multi-function power meters connected to the PLC controller, and the purification device is equipped with a hydrogen flow meter connected to the PLC controller.

[0009] The rectifier system includes a rectifier cabinet, in which a rectifier transformer, a current sensor, a voltage sensor, a temperature sensor, a pressure sensor and a temperature control switch are installed. The rectifier transformer is connected to a gas relay, an oil level thermostat, a pressure relief valve, an on-load voltage regulator and an on-load voltage regulator. The current sensor, temperature sensor, voltage sensor, temperature control switch, gas relay, oil level thermostat, pressure relief valve, on-load voltage regulator and on-load voltage regulator are respectively connected to the PLC controller through signal lines.

[0010] The gas-liquid separation device is equipped with 4 liquid level sensors, 2 pressure sensors, 3 temperature sensors, 2 gas concentration sensors, 22 pneumatic ball valves and 4 pneumatic diaphragm valves connected to the PLC controller. Among them, 2 liquid level sensors are used to monitor the liquid level of the oxygen separation tank in the gas-liquid separation device, and the other 2 liquid level sensors are used to monitor the liquid level of the hydrogen separation tank in the gas-liquid separation device. The 2 pressure sensors are used to monitor the pressure in the oxygen separation tank and the hydrogen separation tank respectively. The 3 temperature sensors are used to monitor the temperature of hydrogen-alkali, oxygen-alkali and cooling water in the gas-liquid separation device respectively. The 2 gas concentration sensors are used to monitor the gas concentrations of oxygen in hydrogen and hydrogen in oxygen in the gas-liquid separation device respectively. The opening and closing actions of the 22 pneumatic ball valves are controlled by the PLC controller. The normal operation of the pneumatic ball valves ensures the normal operation of the gas-liquid separation device. Two of the 4 pneumatic diaphragm valves are used to control the oxygen output of the gas-liquid separation device, and the other two are used to control the hydrogen output of the gas-liquid separation device.

[0011] The purification unit is equipped with 8 temperature sensors, 2 pressure sensors, 2 gas concentration sensors, 19 pneumatic ball valves and 2 pneumatic diaphragm valves connected to the PLC controller. The 8 temperature sensors are used to monitor the upper and lower temperatures of the deoxygenation tower, the upper and lower temperatures of drying tower A, the upper and lower temperatures of drying tower B, and the upper and lower temperatures of drying tower C in the purification unit. The 2 pressure sensors are used to monitor the system pressure of the purification unit. The 2 gas concentration sensors are used to monitor the gas concentration of oxygen in hydrogen and the hydrogen dew point of the hydrogen product of the purification unit. The opening and closing actions of the 19 pneumatic ball valves are controlled by the PLC controller. The normal operation of the pneumatic ball valves ensures the normal operation of the purification unit. The 2 pneumatic diaphragm valves are used to adjust the output of the hydrogen product of the purification unit to ensure that the purification unit operates normally under the set pressure.

[0012] Auxiliary equipment includes a pure water device, a cooling unit and a peripheral equipment monitoring unit. The pure water device is equipped with a conductivity sensor and a liquid level sensor respectively connected to the PLC controller. The cooling unit is equipped with a water temperature sensor and a water flow sensor respectively connected to the PLC controller. The peripheral equipment monitoring unit is connected to the PLC controller through a signal line, and the captured video data is transmitted to the PLC controller and then sent to the edge layer data gateway.

[0013] The platform layer includes a device access module, a system management module, a data storage module, a remote control module, a chart monitoring module and a device alarm module. The device access module is used to monitor, configure and maintain the edge layer data gateway. The system management module is used to organize personnel management, role and authority management, and log management. The remote control module is used to enable operators to remotely control the thousand-cubic-meter hydrogen production equipment. The data storage module is used to store the signals collected by the edge layer data gateway and the operator's operating instructions. The chart monitoring module is used to perform data analysis and chart presentation on the signals collected by the edge layer data gateway, and to mirror and restore the site of the thousand-cubic-meter hydrogen production electrolysis water system. The device alarm module is used to determine whether the signal collected by the edge layer data gateway has reached the threshold, and then to issue an alarm and accurately locate the signal.

[0014] The second technical solution adopted by the present invention is a remote operation and maintenance method for a thousand-cubic-meter alkaline water electrolysis hydrogen production system, which includes installing valves for controlling the operation of the equipment, sensors for monitoring the operation of the equipment, and multi-functional power meters in the thousand-cubic-meter hydrogen production equipment, and collecting data signals transmitted by the sensors and the multi-functional power meters through a PLC controller. The PLC controller sends the collected data signals to the edge layer data gateway through the PN protocol, and the edge layer data gateway sends the collected data signals to the cloud platform and the platform layer through the wireless Internet of Things network. The cloud platform sends the received data signals to the local display terminal and the mobile display terminal through the network, and the platform layer stores and analyzes the collected data signals, mirrors and restores the site of the thousand-cubic-meter hydrogen production electrolysis water system, and then transmits them to the local display terminal and the mobile display terminal for intuitive display. The operator realizes remote control of the thousand-cubic-meter hydrogen production equipment through the platform layer.

[0015] Sensors and multi-function power meters for monitoring equipment operation are installed in the thousand-cubic-meter hydrogen production equipment, including multi-function power meters connected to the PLC controller installed in the high and low voltage distribution skids, and hydrogen flow meters connected to the PLC controller installed in the purification unit. The multi-function power meter is used to read i The power consumption signal W at the moment i The hydrogen flow meter is used to monitor the hydrogen production Q signal, and then calculate the energy consumption W of the hydrogen production system through the platform layer. 能耗 , W 能耗 = (W2-W1) / Q, W2-W1 is the electricity consumption between the first moment and the second moment, and Q is the total hydrogen production between the first moment and the second moment.

[0016] The beneficial effect of the present invention is that by installing sensors for monitoring equipment operation in the thousand-cubic-meter hydrogen production equipment and utilizing cloud-edge collaborative technology, the hydrogen production control system can collect the equipment operation data of a single thousand-cubic-meter alkaline water electrolysis hydrogen production system in real time, and can realize parallel transmission of data communication of more than 10,000 points in the thousand-cubic-meter electrolysis water hydrogen production system, and can store data in seconds, ensuring safe and effective data transmission, and using cloud-based Web configuration technology to realize mirror restoration of the on-site hydrogen production process flow of the thousand-cubic-meter alkaline water electrolysis hydrogen production system, and display the hydrogen production status and equipment operation status through the application layer display terminal, and can remotely grasp the hydrogen production status and equipment operation status in real time, realize remote control and real-time grasp of equipment fault information, and through monitoring the equipment operation status, can extend the equipment life, reduce the equipment operating cost, realize cloud platform operation and maintenance of the thousand-cubic-meter alkaline water electrolysis hydrogen production equipment, improve the operation and maintenance efficiency of the thousand-cubic-meter hydrogen production equipment, and reduce the operation and maintenance human resource cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system of the present invention; Figure 2 This is a schematic diagram of the structure of the equipment layer in the remote operation and maintenance platform of the thousand-cubic-meter alkaline water electrolysis hydrogen production system of the present invention; Figure 3 It is a structural diagram of the platform layer in the remote operation and maintenance platform of the thousand-cubic-meter alkaline water electrolysis hydrogen production system of the present invention.

[0018] In the figure, 1. Equipment layer, 2. Cloud platform, 3. Platform layer, 4. Local display terminal, 5. Mobile display terminal, 6. Wireless Internet of Things network, 7. Data gateway, 8. Hydrogen production control system, 9. High and low voltage distribution skids, 10. Rectification system, 11. Electrolyzer, 12. Gas-liquid separation device, 13. Purification device, 14. Auxiliary equipment, 15. Equipment access module, 16. System management module, 17. Data storage module, 18. Remote control module, 19. Chart monitoring module, 20. Equipment alarm module. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 A remote operation and maintenance platform for a thousand-cubic-meter alkaline water electrolysis hydrogen production system, referring to Figure 1, including device layer 1, cloud platform 2, platform layer 3 and application layer. Device layer 1 is equipped with thousand-cubic-meter hydrogen production equipment. The thousand-cubic-meter hydrogen production equipment is equipped with valves for controlling equipment operation, sensors and multi-function power meters for monitoring equipment operation status, and PLC controllers for controlling equipment operation. Cloud platform 2 is equipped with a public cloud or a private cloud. Platform layer 3 is equipped with a private cloud server or a local server. The application layer is equipped with a local display terminal 4 and a mobile display terminal 5. Both cloud platform 2 and platform layer 3 are deployed with Web configuration software. Device layer 1, cloud platform 2 and platform layer 3 are connected through a wireless Internet of Things network 6. Cloud platform 2 is also connected to the local display terminal 4 and the mobile display terminal 5 through the wireless Internet of Things network 6 respectively. Platform layer 3 is connected to the local display terminal 4 through a wired dedicated network.

[0021] Reference Figure 2 The thousand-cubic-meter hydrogen production equipment includes a hydrogen production control system 8, a high- and low-voltage distribution skid 9, a rectifier system 10, an electrolyzer 11, a gas-liquid separation device 12, a purification device 13 and auxiliary equipment 14. The PLC controller is set in the hydrogen production control system 8 and is connected to the edge layer data gateway 7. The hydrogen production control system 8 is provided with a PLC controller and an edge layer data gateway 7 that are interconnected. The PLC controller is connected to the high- and low-voltage distribution skid 9, the rectifier system 10, the electrolyzer 11, the gas-liquid separation device 12, the purification device 13 and the auxiliary equipment 14 respectively through signal lines. The edge layer data gateway 7 is connected to the cloud platform 2 and the platform layer 3 through a wireless Internet of Things network 6.

[0022] Reference Figure 3 The platform layer 3 includes a device access module 15, a system management module 16, a data storage module 17, a remote control module 18, a chart monitoring module 19 and a device alarm module 20. The device access module 15 is used to monitor, configure and maintain the edge layer data gateway 7. The system management module 16 is used to organize personnel management, role and authority management, and log management. The remote control module 18 is used to enable operators to remotely control the thousand-cubic-meter hydrogen production equipment. The data storage module 17 is used to store the signals collected by the edge layer data gateway 7 and the operating instructions of the operator. The chart monitoring module 19 is used to perform data analysis and chart presentation on the signals collected by the edge layer data gateway 7, and to mirror and restore the site of the thousand-cubic-meter hydrogen production electrolysis water system. The device alarm module 20 is used to determine whether the signal collected by the edge layer data gateway 7 has reached the threshold, and then to issue an alarm and accurately locate the signal.

[0023] Example 2 A remote operation and maintenance platform for a thousand-cubic-meter-scale alkaline water electrolysis hydrogen production system includes a device layer 1, a cloud platform 2, a platform layer 3, and an application layer. The device layer 1 is provided with a thousand-cubic-meter-scale hydrogen production device, the cloud platform 2 is provided with a public cloud or a private cloud, the platform layer 3 is provided with a private cloud server or a local server, the application layer is provided with a local display terminal 4 and a mobile display terminal 5, both the cloud platform 2 and the platform layer 3 are deployed with Web configuration software, and the Web configuration software used in this embodiment is the giant control GRM WebGui configuration software. The device layer 1, the cloud platform 2, and the platform layer 3 are connected via a wireless Internet of Things network 6, the cloud platform 2 is also connected to the local display terminal 4 and the mobile display terminal 5 respectively via the wireless Internet of Things network 6, and the platform layer 3 is connected to the local display terminal 4 via a wired dedicated network. The thousand-cubic-meter-level hydrogen production equipment includes a hydrogen production control system 8, a high- and low-voltage distribution skid 9, a rectifier system 10, an electrolyzer 11, a gas-liquid separation device 12, a purification device 13 and auxiliary equipment 14. The hydrogen production control system 8 is provided with a PLC controller and an edge layer data gateway 7 that are interconnected. The PLC controller is connected to the high- and low-voltage distribution skid 9, the rectifier system 10, the electrolyzer 11, the gas-liquid separation device 12, the purification device 13 and the auxiliary equipment 14 respectively through signal lines. The edge layer data gateway 7 is connected to the cloud platform 2 and the platform layer 3 through a wireless Internet of Things network 6.

[0024] The high and low voltage distribution skid 9 is equipped with a voltage transformer JDZ9-35 / 0.1 / 0.1 / 0.22, a current transformer LZZBJ9-35-200-400 / 5A and a multi-function power meter connected to the PLC controller. The purification unit 13 is equipped with a hydrogen flow meter MFC608S connected to the PLC controller. The voltage transformer JDZ9-35 / 0.1 / 0.1 / 0.22 is used to collect the high and low voltage signals of the high and low voltage distribution skid. The current transformer The LZZBJ9-35-200-400 / 5A device is used to collect high-voltage and low-voltage current signals from the high- and low-voltage distribution skids. The multi-function power meter is used to read the power consumption signal. These signal data are transmitted to the PLC controller, which then sends them to the cloud platform 2 and platform layer 3. Through the cloud-edge-end collaboration, users can analyze the overall power consumption of the hydrogen production system. At the same time, the cloud platform combines the hydrogen production Q signal collected by the hydrogen flow meter MFC608S to calculate the energy consumption of the hydrogen production system. 能耗 = (W2-W1) / Q, W2-W1 is the power consumption between the first moment and the second moment, Q is the total hydrogen production between the first moment and the second moment, W 能耗 The DC power consumed to generate each standard cubic meter of hydrogen is measured in kWh / Nm³. Energy consumption analysis is performed on the cloud platform to generate data charts, allowing users to more intuitively analyze whether the performance of the thousand-cubic-meter electrolyzer has declined.

[0025] The rectifier system 10 is a 24-pulse rectifier system, including a rectifier cabinet, in which a rectifier transformer, a thyristor rectifier power supply, a current sensor KDA-22kA, a temperature sensor CYYZ08, a voltage sensor 2022-003-V2.0, a pressure sensor CWDZ19 and a temperature control switch KSD301 are installed. The rectifier transformer is connected to a gas relay QJ4-80ATH, an oil level thermostat BWY-804, a pressure relief valve YSF-55 / 80KKJ, an on-load tap regulator and an on-load tap regulator. The current sensor, current sensor, temperature sensor, pressure sensor, temperature control switch, gas relay, oil level thermostat, pressure relief valve, on-load tap regulator and on-load tap regulator are respectively connected to the PLC controller through signal lines.

[0026] Using cloud-edge-end collaboration, the PLC controller remotely reads and stores the heavy gas signal collected by the QJ4-80ATH gas relay of the 24-pulse rectifier system's rectifier transformer. When the gas generated by the rectifier transformer is too high during faulty operation, the gas relay triggers an alarm. The controller also remotely reads and stores the over-oil temperature signal collected by the BWY-804 oil level thermostat. When the rectifier transformer temperature exceeds the set value, the oil level thermostat triggers an alarm. The controller also reads and stores the pressure relief signal collected by the YSF-55 / 80KKJ pressure relief valve. When the oil pressure of the rectifier transformer is too high during operation, the valve triggers an actuation signal. The controller also reads and stores the rectifier transformer gear position signal collected by the on-load tap changer and the heavy gas signal of the on-load tap changer. When the gas alarm signal of the on-load tap changer exceeds the set value, an alarm signal is generated.

[0027] The DC current signal collected by the current sensor KDA-22kA in the rectifier cabinet, the voltage signal collected by the voltage sensor 2022-003-V2.0 (the current signal and voltage signal collected here are the working current and voltage of the 1,000-cubic-meter electrolyzer), the cooling water temperature signal of the rectifier cabinet collected by the temperature sensor CYYZ08, the cooling water pressure signal of the rectifier cabinet collected by the CWDZ19 pressure sensor, and the switch signal collected by the temperature control switch KSD301 are remotely read and stored. By collecting the relevant signals of the 24-pulse rectifier system in the cloud and performing the 2D and 3D configuration process on the Web and mirroring it, the working status of the 24-pulse rectifier system and the 1,000-cubic-meter electrolyzer can be understood in real time, which is convenient for users to operate and maintain the 1,000-cubic-meter hydrogen production equipment.

[0028] The electrolytic cell is the core component involved in the thousand-cubic-meter water electrolysis reaction. The relevant signals during the electrolysis reaction are collected by the gas-liquid separation device 12 and the purification device 13 and summarized into the PLC controller.

[0029] The gas-liquid separation device is an important component involved in the thousand-cubic-meter water electrolysis hydrogen production. It mainly separates, washes and cools the hydrogen and oxygen produced by electrolysis. The gas-liquid separation device is equipped with 4 liquid level sensors, 2 pressure sensors, 3 temperature sensors, 2 gas concentration sensors, 22 pneumatic ball valves and 4 pneumatic diaphragm valves connected to the PLC controller. Among the 4 liquid level sensors, 2 liquid level sensors are used to monitor the liquid level of the oxygen separation tank of the gas-liquid separation device, and the other 2 are used to monitor the liquid level of the hydrogen separation tank of the gas-liquid separation device. The 2 pressure sensors are used to monitor the pressure of the oxygen separation tank and the hydrogen separation tank of the gas-liquid separation device respectively. This pressure represents the working pressure of the gas-liquid separation device. The 3 temperature sensors are used to monitor the temperature of the hydrogen-alkali, oxygen-alkali and cooling water of the gas-liquid separation device respectively. The 2 gas concentration sensors are used to monitor the gas concentration of oxygen in hydrogen and hydrogen in oxygen in the gas-liquid separation device respectively. The opening and closing actions of the 22 pneumatic ball valves are controlled by the PLC controller. The normal operation of the pneumatic ball valves ensures the normal operation of the gas-liquid separation device. Two of the four pneumatic diaphragm valves control the oxygen output of the gas-liquid separator, while the other two control the hydrogen output. The proper operation of these four pneumatic diaphragm valves ensures system pressure stability and liquid level balance, ensuring the proper functioning of the gas-liquid separator. These signal data are first collected via a multi-core cable into the instrument junction box of the gas-liquid separator and then transmitted to the PLC controller. During the operation of the gas-liquid separation device, when the liquid level of the hydrogen separation tank and the liquid level of the oxygen separation tank exceed the alarm value and interlock value set in the PLC controller, when the working pressure of the gas-liquid separation device exceeds the alarm value and interlock value set in the PLC controller, when the gas concentration of oxygen in hydrogen and hydrogen in oxygen in the gas-liquid separation device exceeds the alarm value and interlock value set in the PLC controller, and when the hydrogen-alkali, oxygen-alkali, and cooling water temperatures during the operation of the gas-liquid separation device exceed the alarm value and interlock value set in the PLC controller, an alarm and shutdown signal will be issued and remotely recorded and stored by the operation and maintenance platform.

[0030] The purification unit primarily dries and further purifies the hydrogen produced by the gas-liquid separation unit to meet product hydrogen requirements. The unit is equipped with eight temperature sensors, two pressure sensors, two gas concentration sensors, 19 pneumatic ball valves, and two pneumatic diaphragm valves, all connected to a PLC controller. The eight temperature sensors monitor the upper and lower temperatures of the deoxygenation tower, drying tower A, drying tower B, and drying tower C. The two pressure sensors monitor the system pressure. The two gas concentration sensors monitor the oxygen content and dew point of the hydrogen product, respectively. The opening and closing of the 19 pneumatic ball valves are controlled by the PLC controller. The proper operation of the pneumatic ball valves ensures the normal operation of the purification unit. The two pneumatic diaphragm valves regulate the output of the purification unit's product hydrogen and ensure proper operation at the specified pressure. These signal data are first collected into the instrument junction box of the gas-liquid separation device through a multi-core cable, and then transmitted to the PLC controller.

[0031] During the operation of the purification unit, when the operating temperatures of the deoxygenation tower, drying tower A, drying tower B, and drying tower C exceed the alarm values and interlock values set in the PLC controller, and when the oxygen gas concentration in hydrogen and the hydrogen dew point monitored by the dew point meter exceed the alarm values and interlock values set in the PLC controller, alarm signals and shutdown signals will be triggered and remotely recorded and stored by the operation and maintenance platform.

[0032] The operation and maintenance platform displays important data collected in real time during the operation of the thousand-cubic-meter hydrogen production equipment in graphs, tables, and curves, such as the electrolysis current and voltage of the electrolytic cell by the rectifier power supply, the oxygen concentration in hydrogen of the gas-liquid separation device, the hydrogen concentration in oxygen, the working pressure of the gas-liquid separation device, the alkali liquid temperature collected by the gas-liquid separation device, the cooling water temperature, and the temperature parameters of the deoxidation tower and the drying tower collected by the purification device, so that users can observe the operating data of the thousand-cubic-meter hydrogen production system more clearly.

[0033] The auxiliary equipment 14 includes a pure water device, a cooling unit and a peripheral equipment monitoring unit. The pure water device is used to provide raw water for the thousand-cubic-meter hydrogen production system, and the cooling unit is used to provide cooling water for the thousand-cubic-meter hydrogen production system. The pure water device is equipped with a conductivity sensor and a liquid level sensor respectively connected to the PLC controller. The conductivity sensor is used to monitor the raw water quality signal, and the liquid level sensor is used to monitor the raw water tank liquid level signal; the cooling unit is equipped with a water temperature sensor and a water flow sensor respectively connected to the PLC controller, and the water temperature sensor is used to monitor the cooling water temperature signal, and the water flow sensor is used to monitor the cooling water flow; the peripheral equipment monitoring unit is connected to the PLC controller through a signal line, and transmits the captured video data to the PLC controller, and then sends the data signal received by the PLC controller to the edge layer data gateway 7 through the PN protocol. The edge layer data gateway 7 sends the collected data to the cloud platform 2 and the platform layer 3 through the wireless Internet of Things network.

[0034] The operating status of auxiliary equipment is remotely monitored using cloud-edge-end collaboration. The internal signals of the pure water device are mainly the conductivity signal of the conductivity sensor TDS01 that produces pure water, and the pure water tank level signal LIS01 monitored by the liquid level sensor. When the TDS01 conductivity signal is greater than the set value, an alarm signal is triggered and remotely recorded and stored. When the pure water tank level signal LIS01 exceeds the set value, an alarm signal is triggered and remotely recorded and stored. At the same time, the on-site peripheral equipment monitoring unit of the thousand-cubic-meter hydrogen production equipment can also transmit video signals to the cloud platform through cloud-edge collaboration, conducting real-time video monitoring of the hydrogen production site and realizing remote operation and maintenance of the thousand-cubic-meter hydrogen production equipment.

[0035] The platform layer 3 includes a device access module 15, a system management module 16, a data storage module 17, a remote control module 18, a chart monitoring module 19 and a device alarm module 20. The device access module 15 is used to monitor, configure and maintain the edge layer data gateway 7. The system management module 16 is used to organize personnel management, role and authority management, and log management. Through the above functions, department management, role management, workgroup management and user management can be realized. It can also be realized that a user can exist in multiple positions and play different roles in different jobs. Different roles and corresponding permissions can be assigned to different users. It can record the user's operation status and query the system's login log and operation log; the remote control module 18 is used to realize the operator's remote control of the thousand-cubic-meter hydrogen production equipment, including the thousand-cubic-meter hydrogen production equipment. The start and stop control of switches and valves, as well as the setting of basic equipment parameter functions; the data storage module 17 is used to store the signals collected by the edge layer data gateway 7 and the operating instructions of the operator, which facilitates the management of the equipment; the chart monitoring module is an important component of the human-computer interaction at the platform layer. The chart monitoring module is used to perform data analysis and chart presentation on the signals received by the storage edge layer data gateway 7, including the use of Web configuration software to configure the process flow of equipment operation, mirroring and restoring the site of the thousand-cubic-meter hydrogen electrolysis water hydrogen production system, and generating it at the platform layer. It can support the display of data parameters in different dimensions, including process flow charts, curve charts, bar charts, scatter plots, and projection charts to more intuitively display the operating status of the equipment; the equipment alarm module 20 is used to determine whether the data signal received by the storage edge layer data gateway 7 has reached the threshold, and then issue an alarm and accurately locate the position. By monitoring the equipment alarm, the fault diagnosis function can be realized, the efficiency of fault detection and fault handling can be improved, and the impact of the fault on the equipment and safe production can be minimized.

[0036] Qianfangji remote operation and maintenance platform uses Web configuration software to realize the mirror restoration of the hydrogen production process gas-liquid separation process, purification process and auxiliary equipment process. It uses the configuration software in the cloud platform to send control commands to the hydrogen production equipment. The use of multi-packet data concurrency technology enables the cloud platform to receive the operating data of the hydrogen production equipment.

[0037] The above operation and maintenance platform can realize data collection and storage of equipment in the thousand-cubic-meter hydrogen production system, fault alarm during equipment operation, remote collection of data from peripheral equipment monitoring units, and image restoration of hydrogen gas-liquid separation process and purification process flow of on-site equipment and other auxiliary equipment process flow. In addition, it can conduct online analysis and supervision of various types of data, and present them in the form of charts or curve visualization. Ultimately, it can realize real-time monitoring of production data of the thousand-cubic-meter alkaline water hydrogen production equipment, remote control, abnormal alarm, active fault issuance, and information and intelligent management of equipment operation and maintenance, and management process. At the same time, information technology is used to improve the management capabilities of equipment in terms of refinement, informationization, and intelligence. It can improve personnel work efficiency, increase equipment normal operation time, extend equipment life, improve system production efficiency, and reduce equipment operating costs.

[0038] Example 3 A remote operation and maintenance method for a thousand-cubic-meter-scale alkaline water electrolysis hydrogen production system includes installing valves for controlling equipment operation, sensors for monitoring equipment operation, and multifunctional power meters in the thousand-cubic-meter-scale hydrogen production equipment, collecting data signals transmitted by the sensors and the multifunctional power meters through a PLC controller, the PLC controller sending the collected data signals to an edge layer data gateway 7 through a PN protocol, the edge layer data gateway 7 sending the collected data signals to a cloud platform 2 and a platform layer 3 through a wireless Internet of Things network 6, the cloud platform 2 sending the received data signals to a local display terminal 4 and a mobile display terminal 5 through the network, the platform layer 3 storing and analyzing the collected data signals, mirroring and restoring the site of the thousand-cubic-meter-scale hydrogen production system by electrolysis of water, and then transmitting the data signals to the local display terminal 4 and the mobile display terminal 5 for intuitive display, so that the operator can remotely control the thousand-cubic-meter-scale hydrogen production equipment through the platform layer 3.

[0039] Sensors and multi-function power meters for monitoring equipment operation are installed in the thousand-cubic-meter hydrogen production equipment, including multi-function power meters connected to the PLC controller installed in the high and low voltage distribution skids, and hydrogen flow meters connected to the PLC controller installed in the purification unit. The multi-function power meter is used to read i The power consumption signal W at the moment i The hydrogen flow meter is used to monitor the hydrogen production Q signal, and then calculate the energy consumption W of the hydrogen production system through the platform layer. 能耗 , W 能耗 = (W2-W1) / Q, W2-W1 is the power consumption between the first moment and the second moment, Q is the total hydrogen production between the first moment and the second moment, and the energy consumption of the hydrogen production system W 能耗 It can intuitively analyze whether the performance of the electrolyzer in the thousand-cubic-meter hydrogen production equipment has declined.

Claims

1. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system is characterized by: The invention comprises a device layer (1), a cloud platform (2), a platform layer (3) and an application layer. The device layer (1) is provided with a thousand-cubic-meter hydrogen production device. The thousand-cubic-meter hydrogen production device is installed with valves for controlling the operation of the device, sensors for monitoring the operation status of the device and multi-function power meters, as well as a PLC controller for controlling the operation of the device. The cloud platform (2) is provided with a public cloud or a private cloud. The platform layer (3) is provided with a private cloud server or a local server. The application layer is provided with a local display terminal (4) and a mobile display terminal (5). Both the cloud platform (2) and the platform layer (3) are deployed with Web configuration software. The device layer (1), the cloud platform (2) and the platform layer (3) are connected via a wireless Internet of Things network (6). The cloud platform (2) is also connected to the local display terminal (4) and the mobile display terminal (5) via a wireless Internet of Things network (6). The platform layer (3) is connected to the local display terminal (4) via a wired dedicated network.

2. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 1 is characterized in that: The thousand-cubic-meter hydrogen production equipment includes a hydrogen production control system (8), a high- and low-voltage distribution skid (9), a rectifier system (10), an electrolyzer (11), a gas-liquid separation device (12), a purification device (13) and auxiliary equipment (14). A PLC controller is arranged in the hydrogen production control system (8) and is connected to an edge layer data gateway (7). The PLC controller is connected to the high- and low-voltage distribution skid (9), the rectifier system (10), the electrolyzer (11), the gas-liquid separation device (12), the purification device (13) and the auxiliary equipment (14) through signal lines, respectively. The edge layer data gateway (7) is connected to the cloud platform (2) and the platform layer (3) through a wireless Internet of Things network (6).

3. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: A voltage transformer, a current transformer and a multifunctional power meter connected to a PLC controller are installed in the high and low voltage distribution skid (9), and a hydrogen flow meter connected to the PLC controller is installed in the purification device (13).

4. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: The rectifier system (10) includes a rectifier cabinet, in which a rectifier transformer, a current sensor, a voltage sensor, a temperature sensor, a pressure sensor and a temperature control switch are installed. The rectifier transformer is connected to a gas relay, an oil level temperature controller, a pressure relief valve, an on-load voltage regulator and an on-load voltage regulator. The current sensor, the temperature sensor, the voltage sensor, the temperature control switch, the gas relay, the oil level temperature controller, the pressure relief valve, the on-load voltage regulator and the on-load voltage regulator are respectively connected to a PLC controller via a signal line.

5. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: The gas-liquid separation device (12) is equipped with 4 liquid level sensors, 2 pressure sensors, 3 temperature sensors, 2 gas concentration sensors, 22 pneumatic ball valves and 4 pneumatic film valves connected to the PLC controller, wherein 2 liquid level sensors are used to monitor the liquid level of the oxygen separation tank in the gas-liquid separation device (12), and the other 2 liquid level sensors are used to monitor the liquid level of the hydrogen separation tank in the gas-liquid separation device (12). The 2 pressure sensors are used to monitor the pressure in the oxygen separation tank and the hydrogen separation tank respectively. The 3 temperature sensors are used to monitor the temperature of hydrogen alkali, oxygen alkali and cooling water in the gas-liquid separation device (12). The 2 gas concentration sensors are used to monitor the gas concentration of oxygen in hydrogen and hydrogen in oxygen in the gas-liquid separation device (12). The opening and closing actions of the 22 pneumatic ball valves are controlled by the PLC controller. The normal operation of the pneumatic ball valves ensures the normal operation of the gas-liquid separation device. Two of the four pneumatic diaphragm valves are used to control the output of oxygen from the gas-liquid separation device (12), and the other two are used to control the output of hydrogen from the gas-liquid separation device (12).

6. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: The purification device (13) is equipped with 8 temperature sensors, 2 pressure sensors, 2 gas concentration sensors, 19 pneumatic ball valves and 2 pneumatic membrane valves connected to the PLC controller. The 8 temperature sensors are respectively used to monitor the upper temperature and lower temperature of the deoxidation tower, the upper temperature and lower temperature of the drying tower A, the upper temperature and lower temperature of the drying tower B, and the upper temperature and lower temperature of the drying tower C in the purification device (13). The 2 pressure sensors are used to monitor the system pressure of the purification device (13). The 2 gas concentration sensors are respectively used to monitor the gas concentration of oxygen in hydrogen and the hydrogen dew point of the hydrogen product of the purification device (13). The opening and closing actions of the 19 pneumatic ball valves are controlled by the PLC controller. The normal operation of the pneumatic ball valves ensures the normal operation of the purification device. The 2 pneumatic membrane valves are used to adjust the output of the hydrogen product of the purification device (13) to ensure that the purification device (13) works normally under the set pressure.

7. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: The auxiliary equipment (14) includes a pure water device, a cooling unit, and a peripheral equipment monitoring unit. The pure water device is equipped with a conductivity sensor and a liquid level sensor respectively connected to the PLC controller. The cooling unit is equipped with a water temperature sensor and a water flow sensor respectively connected to the PLC controller. The peripheral equipment monitoring unit is connected to the PLC controller via a signal line, and the captured video data is transmitted to the PLC controller and then sent to the edge layer data gateway (7).

8. The remote operation and maintenance platform for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 2 is characterized in that: The platform layer (3) includes a device access module (15), a system management module (16), a data storage module (17), a remote control module (18), a chart monitoring module (19) and a device alarm module (20), wherein the device access module (15) is used to monitor, configure and maintain the edge layer data gateway (7), the system management module (16) is used to organize personnel management, role and authority management, and log management, the remote control module (18) is used to enable operators to remotely control the thousand-cubic-meter hydrogen production equipment, the data storage module (17) is used to store the signals collected by the edge layer data gateway (7) and the operating instructions of the operators, the chart monitoring module (19) is used to perform data analysis and chart presentation on the signals collected by the edge layer data gateway (7), and to restore the scene of the thousand-cubic-meter hydrogen production electrolysis water hydrogen production system by mirroring, and the device alarm module (20) is used to determine whether the signals collected by the edge layer data gateway (7) have reached a threshold, and then to issue an alarm and accurately locate.

9. A remote operation and maintenance method for a thousand-cubic-meter alkaline water electrolysis hydrogen production system, characterized in that: The method includes installing valves for controlling the operation of the equipment, sensors for monitoring the operation of the equipment and multifunctional power meters in the thousand-cubic-meter hydrogen production equipment, collecting data signals transmitted by the sensors and the multifunctional power meters through a PLC controller, sending the collected data signals to an edge layer data gateway (7) through a PN protocol, sending the collected data signals to a cloud platform (2) and a platform layer (3) through a wireless Internet of Things network (6), sending the received data signals to a local display terminal (4) and a mobile display terminal (5) through a network for display, storing and analyzing the collected data signals, mirroring and restoring the scene of the thousand-cubic-meter hydrogen production system by electrolysis of water, and then transmitting the data signals to a local display terminal (4) and a mobile display terminal (5) for intuitive display, and enabling operators to remotely control the thousand-cubic-meter hydrogen production equipment through the platform layer (3).

10. The remote operation and maintenance method for the thousand-cubic-meter alkaline water electrolysis hydrogen production system according to claim 9, characterized in that: Sensors and multifunctional power meters for monitoring equipment operation are installed in the thousand-cubic-meter hydrogen production equipment, including a multifunctional power meter connected to a PLC controller installed in a high and low voltage distribution skid (9), a hydrogen flow meter connected to a PLC controller installed in a purification device (13), and a multifunctional power meter for reading i The power consumption signal W at the moment i The hydrogen flow meter is used to monitor the hydrogen production Q signal, and then calculate the energy consumption W of the hydrogen production system through the platform layer (3) 能耗 , W 能耗 = (W2-W1) / Q, W2-W1 is the electricity consumption between the first moment and the second moment, and Q is the total hydrogen production between the first moment and the second moment.

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