Accurate regulation and control and safety interlocking device and method for offshore hydrogen production equipment
By introducing intelligent control and optimization systems and safety interlock devices into offshore hydrogen production equipment, the problems of inaccurate parameter control and insufficient safety assurance of hydrogen production equipment under the volatility of renewable energy have been solved, realizing an efficient and stable hydrogen production process and safety interlocks, and improving equipment life and economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-23
- Publication Date
- 2026-04-10
AI Technical Summary
Existing offshore hydrogen production equipment suffers from insufficient safety assurance in the face of the volatility of renewable energy and inaccurate parameter control, making it difficult to achieve an efficient and stable hydrogen production process. Furthermore, it lacks timely safety interlock protection mechanisms, which can easily lead to safety accidents.
It employs an electrolyzer monitoring module, a pressure monitoring module, a liquid level monitoring module, and a power monitoring module, combined with the intelligent regulation and optimization system of the central control module, to monitor and dynamically adjust hydrogen production parameters in real time. It is equipped with pressure interlock, liquid level interlock, and power interlock systems to achieve precise regulation and safety interlock.
By precisely controlling and optimizing the hydrogen production process, we can improve hydrogen production efficiency, reduce equipment wear, extend equipment life, reduce operational risks, enhance safety and economic benefits, and prevent safety accidents.
Smart Images
Figure CN121826801A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of safety monitoring of offshore hydrogen production equipment, and specifically relates to a precise regulation and control and safety interlocking device and method for offshore hydrogen production equipment. BACKGROUND
[0002] With the increasing demand for clean energy worldwide, offshore hydrogen production has attracted widespread attention as a promising method of hydrogen production. Offshore hydrogen production usually uses abundant renewable energy (such as wind power and photovoltaic power) on the sea to provide power for water electrolysis hydrogen production equipment, achieving green hydrogen production. However, the offshore hydrogen production environment is complex and faces many challenges, among which the precise regulation and control of hydrogen production equipment and safety protection are key issues.
[0003] In existing offshore hydrogen production technology, the control of pressure, liquid level and other important parameters of hydrogen production equipment is often not precise. On the one hand, due to the volatility of offshore renewable energy, such as unstable output power of wind power and photovoltaic power, it will cause fluctuations in current density, instantaneous power and other parameters in the process of water electrolysis hydrogen production, thereby affecting the pressure and liquid level of the hydrogen production equipment. Traditional regulation and control systems are difficult to quickly and accurately respond to these changes, and are prone to situations such as excessively high or low pressure, abnormal liquid level, etc., affecting hydrogen production efficiency and equipment life.
[0004] On the other hand, existing safety protection measures have deficiencies, only when the pressure or liquid level is abnormal, corresponding measures are taken, and even lack of timely and effective safety interlocking protection mechanism, which may lead to safety accidents, such as explosion caused by excessive pressure, explosion caused by mixing of hydrogen and oxygen due to low liquid level, etc. For other key parameters affecting the hydrogen production process, such as electrolyte concentration and electrolyte circulation flow rate, there is a lack of comprehensive regulation and optimization means, making it difficult to improve hydrogen production efficiency while ensuring safety.
[0005] Therefore, it is of great practical significance to develop a system that can precisely regulate and control multiple related parameters of offshore hydrogen production equipment and has perfect safety interlocking protection function. SUMMARY
[0006] The technical problem solved by the present application is to provide a precise regulation and control and safety interlocking device and method for offshore hydrogen production equipment, which can maximize hydrogen production efficiency while ensuring safety, and break through the limitations of existing hydrogen production safety system monitoring parameters and the imperfection of safety interlocking protection function.
[0007] Technical solution: A precise regulation and control and safety interlocking device for offshore hydrogen production equipment, comprising: The electrolytic cell monitoring module comprises a temperature sensor, a flow meter, a liquid level sensor, a conductivity meter and a miniature camera arranged in the electrolytic cell, and is used for acquiring and sending hydrogen production working temperature, electrolyte circulation flow rate, electrolyte liquid level height, electrolyte conductivity and diaphragm corrosion degree data. The pressure monitoring module comprises a pressure sensor arranged in the hydrogen production pipeline, and is used for acquiring and sending hydrogen production working pressure data. The liquid level monitoring module comprises a liquid level sensor arranged in the hydrogen liquid separator and the oxygen liquid separator, and is used for acquiring and sending hydrogen liquid separator liquid level height and oxygen liquid separator liquid level height data. The power supply monitoring module comprises a current sensor and a smart meter arranged on the power supply, and is used for acquiring and sending power supply instantaneous power, voltage fluctuation frequency and working current density data. The central control module comprises an intelligent control and optimization system and a safety interlocking system, wherein the intelligent control and optimization system is electrically connected with each monitoring module and the safety interlocking system, is used for receiving data from each monitoring module and analyzing whether to control the parameters of the hydrogen production equipment, and simultaneously judging whether to start the safety interlocking system; the safety interlocking system comprises a pressure interlocking system, a liquid level interlocking system and a power supply interlocking system.
[0008] A precise control and safety interlocking method of offshore hydrogen production equipment comprises the following steps: S1. Real-time monitoring and acquiring data of each monitoring module, wherein the data comprises control data and monitoring data, and judging whether the monitoring data is within the safety threshold, if yes, turning to S2, otherwise, turning to S4; S2. Judging whether the control data is abnormal, if yes, turning to S3, otherwise, returning to S1; S3. Dynamically adjusting each control data, improving hydrogen production efficiency while ensuring the stability of the hydrogen production process; S4. Starting the safety interlocking system: when the hydrogen production working pressure is higher than the safety upper limit, starting the pressure interlocking system; when the instantaneous power is higher than the safety upper limit, starting the power supply interlocking system; when the hydrogen liquid separator liquid level height or the oxygen liquid separator liquid level height is higher than the safety upper limit or lower than the safety lower limit, starting the liquid level interlocking system.
[0009] Preferably, in S1, the control data comprises hydrogen production working temperature, electrolyte circulation flow rate, electrolyte conductivity, electrolyte liquid level height, diaphragm corrosion degree, power supply voltage fluctuation frequency and working current density; the monitoring data comprises hydrogen production working pressure, hydrogen liquid separator liquid level height, oxygen liquid separator liquid level height and power supply instantaneous power.
[0010] Preferably, the S3 dynamically adjusts each control data, including: when the hydrogen production working temperature is not within the threshold range, displaying temperature abnormality, and taking corresponding temperature raising or lowering measures; when the electrolyte conductivity is lower than the threshold range, displaying electrolyte concentration being too low, and taking electrolyte supplement measures; when the electrolyte liquid level height is lower than the threshold range, displaying electrolyte concentration being too high, and taking water supplement measures; when the membrane corrosion degree picture is abnormal, displaying membrane alarm, and taking measures of notifying staff to maintain and replace the membrane.
[0011] Preferably, the S3 dynamically adjusts each control data, including: when the hydrogen production working temperature is not within the threshold range, displaying temperature abnormality, and taking corresponding temperature raising or lowering measures; when the electrolyte conductivity is lower than the threshold range, displaying electrolyte concentration being too low, and taking electrolyte supplement measures; when the electrolyte liquid level height is lower than the threshold range, displaying electrolyte concentration being too high, and taking water supplement measures; when the membrane corrosion degree picture is abnormal, displaying membrane alarm, and taking measures of notifying staff to maintain and replace the membrane.
[0012] Preferably, the S3 dynamically adjusts each control data according to the following formula: minHTO(C,F,T,I) s.t. P(C,F,T,I)≤Pmax; wherein HTO(C,F,T,I) is a function of electrolyte concentration C, electrolyte circulation flow rate F, hydrogen production working temperature T, and working current density I, representing the volume content of hydrogen in oxygen, and the electrolyte concentration C is determined by the electrolyte conductivity σ; P(C,F,T,I) is a function of these parameters, representing the hydrogen production working pressure; and Pmax is the maximum allowable value of the hydrogen production working pressure.
[0013] Further, the formula is specifically: min(k1C+k2F+k3T+k4I) s.t. m1C+m2F+m3T+m4I+b≤Pmax; wherein k1, k2, k3, and k4 are experimentally determined coefficients, and m1, m2, m3, m4, and b are experimentally determined coefficients.
[0014] Preferably, in the S4, when the hydrogen production working pressure is higher than the upper safety limit, the intelligent control and optimization system starts the pressure interlock system and the pressure controller, and automatically stops hydrogen production to prevent explosion caused by high pressure; at the same time, the related valves are cut off to prevent high-pressure gas leakage.
[0015] Preferably, in S4, when the hydrogen liquid separator liquid level height or the oxygen liquid separator liquid level height is lower than the safe lower limit, the intelligent control and optimization system triggers a liquid level lower limit alarm and starts a liquid level interlocking system to stop supplying liquid to the corresponding separator to prevent hydrogen and oxygen mixing due to the excessively low liquid level; when the hydrogen liquid separator liquid level height or the oxygen liquid separator liquid height is higher than the safe upper limit, the intelligent control and optimization system triggers a liquid level upper limit alarm and starts a liquid level interlocking system to stop draining liquid from the corresponding separator to prevent liquid overflow.
[0016] Preferably, in S4, when the instantaneous power is higher than the safe upper limit, the intelligent control and optimization system triggers an instantaneous power upper limit alarm, forcibly shuts down the hydrogen production equipment and performs power-off to prevent the electrolytic cell from being damaged by current and the diaphragm from being punctured.
[0017] Beneficial effects: The present application has the following beneficial effects: The present application uses an intelligent control and optimization system to monitor key control data (such as temperature, conductivity, flow rate, current density, etc.) in real time during hydrogen production, and dynamically adjusts hydrogen production parameters according to these data, thereby optimizing hydrogen production efficiency and maintaining its stability.
[0018] The present application is equipped with a perfect safety interlocking system, including pressure interlocking, liquid level interlocking and power supply interlocking, which can quickly cut off the relevant process when the pressure or liquid level is abnormal, and forcibly shut down and power off in time when the instantaneous power of the power supply is abnormal, thereby effectively preventing safety accidents such as explosion caused by excessive pressure and explosion caused by mixing of hydrogen and oxygen due to excessively low liquid level.
[0019] The present application uses advanced algorithms to process and analyze pressure and liquid level data, predicts potential safety risks in advance, and takes corresponding preventive measures. At the same time, according to the operation formula of the intelligent control and optimization system, the relevant parameters are dynamically adjusted to maximize the reduction of hydrogen content in oxygen, improve the purity of hydrogen production, ensure the safety of hydrogen production, and realize precise control and optimization of hydrogen production work.
[0020] The intelligent control and optimization system in the present application can dynamically adjust the circulation flow rate of electrolyte to adapt to the wind power fluctuation or photovoltaic fluctuation of the power supply, thereby reducing the influence of the instability of the renewable energy coupled power supply on the efficiency and safety of the hydrogen production equipment.
[0021] The present application reduces the wear and damage of equipment caused by parameter fluctuation by precisely controlling and optimizing the hydrogen production process, thereby prolonging the service life of the equipment and improving the reliability of the system; by improving the hydrogen production efficiency and safety, reducing the downtime and maintenance cost caused by safety accidents, and reducing the operating risk, the overall economic benefit is improved. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1is a frame schematic diagram of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application; Figure 2 is a flow step diagram of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application; Figure 3 is a flow step diagram of the pressure interlocking system of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application; Figure 4 is a flow step diagram of the liquid level interlocking system of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application; Figure 5 is a flow step diagram of the power supply interlocking system of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application; Figure 6 is a flow step diagram of the intelligent regulation and optimization system of the precise regulation and safety interlocking system of the offshore hydrogen production equipment described in the present application. DETAILED DESCRIPTION
[0023] The present application will be further described below in conjunction with the drawings and specific embodiments. Embodiment 1
[0024] As shown in the drawings, Figure 1 a precise regulation and safety interlocking device for offshore hydrogen production equipment, comprising: an electrolytic cell monitoring module, including a temperature sensor, a flow meter, a liquid level sensor, an electrical conductivity meter and a miniature camera arranged in the electrolytic cell, for obtaining and sending hydrogen production working temperature, electrolyte circulation flow rate, electrolyte liquid level height, electrolyte electrical conductivity and diaphragm corrosion degree data.
[0025] a pressure monitoring module, including a pressure sensor arranged in the hydrogen production pipeline, for obtaining and sending hydrogen production working pressure data.
[0026] a liquid level monitoring module, including a liquid level sensor arranged in the hydrogen liquid separator and the oxygen liquid separator, for obtaining and sending hydrogen liquid separator liquid level height and oxygen liquid separator liquid level height data.
[0027] a power supply monitoring module, including a current sensor and a smart meter arranged on the power supply, for obtaining and sending power supply instantaneous power, voltage fluctuation frequency and working current density data.
[0028] a central control module, including an intelligent regulation and optimization system, a safety interlocking system.
[0029] The intelligent control and optimization system is electrically connected with each monitoring module and the safety interlocking system, is used for receiving data from each monitoring module and analyzing and judging whether to control parameters of the hydrogen production equipment, and simultaneously judging whether to start the safety interlocking system. Specifically, potential safety risks can be predicted in advance, relevant parameters in the hydrogen production process are dynamically adjusted, and corresponding preventive measures are taken, so that the hydrogen production efficiency is optimized, stability is maintained, safety is ensured, and the action of the safety interlocking system is controlled.
[0030] The safety interlocking system includes a pressure interlocking system, a liquid level interlocking system and a power supply interlocking system. According to the analysis and judgment of the monitoring data by the intelligent control and optimization system, the safety interlocking system can quickly cut off the related process when the pressure or liquid level is abnormal, and can force shutdown and power off in time when the instantaneous power of the power supply is abnormal, so as to prevent safety accidents.
[0031] As shown in Figure 2 , the precise control and safety interlocking method of the offshore hydrogen production equipment using the above device includes the following steps: S1. Real-time monitoring and obtaining data of each monitoring module, the data including control data and monitoring data, and judging whether the monitoring data is within the safety threshold, yes to S2, otherwise to S4; S2. Judging whether the control data is abnormal, yes to S3, otherwise returning to S1; S3. Dynamically adjusting each control data to improve the hydrogen production efficiency while ensuring the stability of the hydrogen production process; S4. Starting the safety interlocking system: when the hydrogen production working pressure is higher than the safety upper limit, starting the pressure interlocking system; when the instantaneous power is higher than the safety upper limit, starting the power supply interlocking system; when the hydrogen liquid separator liquid level height or the oxygen liquid separator liquid level height is higher than the safety upper limit or lower than the safety lower limit, starting the liquid level interlocking system.
[0032] Among them, in the S1, the control data includes hydrogen production working temperature, electrolyte circulation flow rate, electrolyte conductivity, electrolyte liquid level height, diaphragm corrosion degree, power supply voltage fluctuation frequency and working current density; the monitoring data includes hydrogen production working pressure, hydrogen liquid separator liquid level height, oxygen liquid separator liquid level height and power supply instantaneous power.
[0033] Referring to Figure 1 and Figure 2 , the S3 dynamically adjusts each control data, including: When the hydrogen production working temperature is not within the threshold range, a temperature anomaly is displayed, and corresponding temperature raising or lowering measures are taken; when the electrolyte conductivity is lower than the threshold range, it is displayed that the electrolyte concentration is too low, and electrolyte supplementing measures are taken; when the electrolyte liquid level height is lower than the threshold range, it is displayed that the electrolyte concentration is too high, and water supplementing measures are taken; when the diaphragm corrosion degree picture is abnormal, a diaphragm alarm is displayed, and the staff is notified to maintain and replace the diaphragm.
[0034] For example: The normal working temperature range is 60-80℃ (the specific range needs to be determined according to the equipment design), and if the hydrogen production working temperature collected by the temperature sensor in the electrolytic cell is lower than 60℃ or higher than 80℃, relevant measures are taken to raise or lower the temperature; The normal conductivity range is 10-30mS / cm (the specific range needs to be determined according to the type of electrolyte), and if the conductivity collected by the conductivity meter is lower than 10mS / cm, the electrolyte is immediately supplemented, and if the electrolyte liquid level height collected by the liquid level sensor in the electrolytic cell is lower than 30% of the full liquid level or the conductivity collected by the conductivity meter is higher than 30mS / cm, water is immediately supplemented; Based on the image analysis transmitted by the miniature camera or regular inspection (such as once a month), the diaphragm corrosion condition is judged, and when the corrosion area exceeds 10% of the total area, an alarm is given and the staff is reminded to replace the diaphragm.
[0035] Referring to Figure 2 , the dynamic adjustment of each control data in S3 further includes adjusting the electrolyte circulation flow rate to adapt to the wind power fluctuation or photovoltaic fluctuation of the power supply, specifically: when the ratio Q of the actual power to the rated power changes, the ratio V of the actual circulation amount of the electrolyte to the rated circulation amount is adjusted according to the ratio Q, Q=αV, and α is approximately 1.
[0036] For example, when Q is 90%-100%, V is adjusted to 100%; when Q is 70%-80%, V is adjusted to 78%; when Q is 60%, V is adjusted to 61%; and when Q is 50% or less, V is adjusted to 50%.
[0037] Referring to Figure 6 , in S3, each control data is dynamically adjusted according to the following formula: minHTO(C,F,T,I) s.t. P(C,F,T,I)≤Pmax; where HTO(C,F,T,I) is a function of electrolyte concentration C, electrolyte circulation flow rate F, hydrogen production working temperature T, and working current density I, representing the volume content of hydrogen in oxygen, electrolyte concentration C is determined by electrolyte conductivity σ; P(C,F,T,I) is a function of these parameters, representing the hydrogen production working pressure; Pmax is the maximum allowable value of the hydrogen production working pressure. Pmax is less than the upper limit of the pressure preset by the pressure interlock system.
[0038] HTO = k1C + k2F + k3T + k4I; k1, k2, k3, k4 are experimentally determined coefficients.
[0039] Similarly, it is assumed that the hydrogen production working pressure also has a certain relationship with these parameters, for example: P = m1C + m2F + m3T + m4I + b where m1, m2, m3, m4, and b are experimentally determined coefficients.
[0040] Therefore, the formula can be transformed into: min(k1C + k2F + k3T + k4I) s.t. m1C + m2F + m3T + m4I + b ≤ Pmax.
[0041] Referring to Figure 3 , in S4, when the hydrogen production working pressure is higher than the upper limit of safety, the intelligent control and optimization system starts the pressure interlock system, starts the pressure controller, and automatically stops hydrogen production to prevent explosion caused by excessive pressure; at the same time, relevant valves are cut off to prevent high-pressure gas leakage.
[0042] For example, the normal working pressure range is 0.5 MPa to 3 MPa (the specific range needs to be determined according to equipment design), and the working pressure collected by the pressure sensor is 3.5 MPa. At this time, the intelligent control and optimization system triggers the pressure upper limit alarm and starts the pressure interlock system.
[0043] Referring to Figure 4 , when the liquid level height of the hydrogen liquid separator or the liquid level height of the oxygen liquid separator is lower than the lower limit of safety, the intelligent control and optimization system triggers the liquid level lower limit alarm and starts the liquid level interlock system to stop supplying liquid to the corresponding separator to prevent hydrogen and oxygen mixing due to excessively low liquid level; when the liquid level height of the hydrogen liquid separator or the liquid level height of the oxygen liquid separator is higher than the upper limit of safety, the intelligent control and optimization system triggers the liquid level upper limit alarm and starts the liquid level interlock system to stop discharging liquid from the corresponding separator to prevent liquid overflow.
[0044] For example, the normal liquid level range is from 20% to 80% of the full liquid level (according to the design of the separator), and the liquid level collected by the liquid level sensor is 15% of the full liquid level, at which time the intelligent control and optimization system determines to trigger the lower limit of the liquid level alarm and start the liquid level interlocking system. The liquid level collected by the liquid level sensor is 85% of the full liquid level, at which time the intelligent control and optimization system triggers the upper limit of the liquid level alarm and starts the liquid level interlocking system.
[0045] Referring to Figure 5 In S4, when the instantaneous power is higher than the upper limit of safety, the intelligent control and optimization system triggers the upper limit of the instantaneous power alarm, forcibly shuts down the hydrogen production equipment and performs power-off, preventing the electrolytic cell from being damaged by current and the diaphragm from being punctured.
[0046] For example, the normal instantaneous power range is not more than 120% of the rated power (determined according to the specifications of the power supply), and the instantaneous power collected by the current sensor and the intelligent meter is 115%, at which time the intelligent control and optimization system triggers the upper limit of the instantaneous power alarm.
[0047] In summary, the present application realizes real-time monitoring of key control data (such as temperature, conductivity, flow rate, current density, etc.) in the hydrogen production process through the intelligent control and optimization system, and dynamically adjusts the hydrogen production parameters according to these data, thereby optimizing the hydrogen production efficiency and maintaining its stability.
[0048] The present application is equipped with a perfect safety interlocking system, including pressure interlocking, liquid level interlocking and power supply interlocking, which ensures that the relevant process can be quickly cut off when the pressure or liquid level is abnormal, and the machine is forcibly shut down and powered off in time when the instantaneous power of the power supply is abnormal, thereby effectively preventing safety accidents such as explosion caused by excessive pressure and explosion caused by mixing of hydrogen and oxygen due to low liquid level.
[0049] The present application uses advanced algorithms to process and analyze pressure and liquid level data, predicts potential safety risks in advance, and takes corresponding preventive measures. At the same time, according to the operation formula of the intelligent control and optimization system, the relevant parameters are dynamically adjusted to maximize the reduction of oxygen hydrogen content, improve the purity of hydrogen production, ensure the safety of hydrogen production, and realize the precise control and optimization of hydrogen production work.
[0050] The intelligent control and optimization system in the present application can dynamically adjust the circulation flow rate of the electrolyte to adapt to the wind power fluctuation or photovoltaic fluctuation of the power supply, thereby reducing the influence of the instability of the renewable energy coupled power supply on the efficiency and safety of the hydrogen production equipment.
[0051] The present application reduces the wear and damage of the equipment caused by parameter fluctuation through precise control and optimization of the hydrogen production process, thereby prolonging the service life of the equipment and improving the reliability of the system; by improving the hydrogen production efficiency and safety, reducing the downtime and maintenance cost caused by safety accidents, reducing the operating risk, and improving the overall economic benefit.
Claims
1. A precise control and safety interlock device for a marine hydrogen production facility, characterized in that, include: The electrolyzer monitoring module includes a temperature sensor, flow meter, liquid level sensor, conductivity meter and miniature camera installed in the electrolyzer, used to acquire and send data on hydrogen production operating temperature, electrolyte circulation flow rate, electrolyte liquid level height, electrolyte conductivity and membrane corrosion degree; The pressure monitoring module includes a pressure sensor installed inside the hydrogen production pipeline, used to acquire and transmit hydrogen production working pressure data; The liquid level monitoring module includes liquid level sensors installed in the hydrogen liquid separator and the oxygen liquid separator, which are used to acquire and send liquid level height data of the hydrogen liquid separator and the oxygen liquid separator; The power monitoring module includes a current sensor and a smart meter installed on the power supply, used to acquire and send data on the power supply's instantaneous power, voltage fluctuation frequency, and operating current density. The central control module includes an intelligent regulation and optimization system and a safety interlock system. The intelligent regulation and optimization system is electrically connected to each monitoring module and the safety interlock system, respectively. It is used to receive data from each monitoring module and analyze and determine whether to adjust the parameters of the hydrogen production equipment, and at the same time determine whether to activate the safety interlock system. The safety interlock system includes a pressure interlock system, a liquid level interlock system, and a power supply interlock system.
2. A method for precise control and safety interlocking of a marine hydrogen production equipment using the apparatus described in claim 1, characterized in that, The steps include the following: S1. Monitor and acquire data from each monitoring module in real time, including control data and monitoring data, and determine whether the monitoring data is within the safety threshold. If yes, proceed to S2; otherwise, proceed to S4. S2. Determine if the control data is abnormal. If yes, proceed to S3; otherwise, return to S1. S3. Dynamically adjust various control data to improve hydrogen production efficiency while ensuring the stability of the hydrogen production process; S4. Activate the safety interlock system: When the hydrogen production working pressure is higher than the safety upper limit, activate the pressure interlock system; when the instantaneous power is higher than the safety upper limit, activate the power interlock system; when the liquid level of the hydrogen liquid separator or the liquid level of the oxygen liquid separator is higher than the safety upper limit or lower than the safety lower limit, activate the liquid level interlock system.
3. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, In S1, the control data includes hydrogen production operating temperature, electrolyte circulation flow rate, electrolyte conductivity, electrolyte level, diaphragm corrosion degree, power supply voltage fluctuation frequency, and operating current density; the monitoring data includes hydrogen production operating pressure, hydrogen-liquid separator level, oxygen-liquid separator level, and instantaneous power supply.
4. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, The S3 dynamic adjustment of various control data includes: when the hydrogen production operating temperature is not within the threshold range, an abnormal temperature is displayed, and corresponding heating or cooling measures are taken; when the electrolyte conductivity is lower than the threshold range, an electrolyte concentration is displayed as too low, and electrolyte replenishment measures are taken; when the electrolyte level is lower than the threshold range, an electrolyte concentration is displayed as too high, and water replenishment measures are taken; when the diaphragm corrosion level display is abnormal, a diaphragm alarm is displayed, and measures are taken to notify staff to perform diaphragm maintenance and replacement.
5. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, The dynamic adjustment of various control data in S3 also includes adjusting the electrolyte circulation flow rate to adapt to the wind power or photovoltaic fluctuations of the power supply. Specifically, when the ratio Q of the actual power to the rated power changes, the ratio V of the actual circulation volume of the electrolyte to the rated circulation volume is adjusted according to the ratio Q, where Q = αV, and α is approximately taken as 1.
6. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, In step S3, the control data are dynamically adjusted according to the following formula: minHTO(C,F,T,I)st P(C,F,T,I)≤Pmax; Where HTO(C,F,T,I) is a function of electrolyte concentration C, electrolyte circulation rate F, hydrogen production operating temperature T, and operating current density I, representing the hydrogen volume content in oxygen, and the electrolyte concentration C is determined by the electrolyte conductivity σ; P(C,F,T,I) is a function of these parameters, representing the hydrogen production operating pressure; Pmax is the maximum allowable value of the hydrogen production operating pressure.
7. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 6, characterized in that, The formula is as follows: min(k1C+k2F+k3T+k4I)st m1C+m2F+m3T+m4I+b≤Pmax; Where k1, k2, k3, k4 are experimentally determined coefficients, and m1, m2, m3, m4 and b are experimentally determined coefficients.
8. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, In step S4, when the hydrogen production working pressure exceeds the safety limit, the intelligent control and optimization system activates the pressure interlock system, starts the pressure controller, and automatically stops hydrogen production to prevent excessive pressure from causing an explosion; at the same time, it shuts off the relevant valves to prevent high-pressure gas leakage.
9. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, In step S4, when the liquid level of the hydrogen liquid separator or the liquid level of the oxygen liquid separator is lower than the safety lower limit, the intelligent control and optimization system triggers a liquid level lower limit alarm and activates the liquid level interlock system to stop supplying liquid to the corresponding separator, preventing hydrogen and oxygen from mixing due to excessively low liquid levels. When the liquid level of the hydrogen liquid separator or the liquid level of the oxygen liquid separator is higher than the safety upper limit, the intelligent control and optimization system triggers a liquid level upper limit alarm and activates the liquid level interlock system to stop draining liquid from the corresponding separator, preventing liquid overflow.
10. The method for precise control and safety interlocking of offshore hydrogen production equipment according to claim 2, characterized in that, In S4, when the instantaneous power exceeds the safety limit, the intelligent control and optimization system triggers an instantaneous power limit alarm, forcibly shuts down the hydrogen production equipment and cuts off the power to prevent the electrolyzer from being damaged by the current and the diaphragm from being punctured.