Gas monitoring method for hydrogen production equipment

Abstract

The invention relates to the technical field of gas monitoring, in particular to a gas monitoring method for hydrogen production equipment, which comprises the following steps: acquiring gas information data of a key position of the hydrogen production equipment, acquiring working environment information data of the hydrogen production equipment, and correcting the gas information data based on the working environment information data, according to the method, the safety, the reliability and the operation efficiency of the hydrogen production equipment are remarkably improved by comprehensively considering working environment factors, comprehensively monitoring the gas concentration of a key position and setting a grading early warning mechanism, meanwhile, the maintenance cost is reduced, and the safety, the reliability and the operation efficiency of the hydrogen production equipment are improved. The method has important practical application value.

Description

Technical Field

[0001] This invention relates to the field of gas monitoring technology, and more specifically, to a gas monitoring method for hydrogen production equipment. Background Technology

[0002] With the transformation of the global energy structure and the increasing demand for clean energy, hydrogen energy, as a highly efficient and clean secondary energy source, has received widespread attention for its development and utilization. As a crucial upstream link in the hydrogen energy industry chain, the safe operation and efficiency improvement of hydrogen production equipment are vital to the development of the entire hydrogen energy industry. However, the hydrogen production process involves multiple gases in the reaction, such as hydrogen, oxygen, nitrogen, and potentially generated carbon monoxide, carbon dioxide, and methane. Changes in the concentration of these gases directly affect the safety, stability, and production efficiency of the hydrogen production equipment. In actual operation, due to the complex and variable working environment of hydrogen production equipment, changes in factors such as temperature and humidity can significantly affect the measurement accuracy of gas sensors, potentially leading to misjudgments of the equipment's status. Furthermore, abnormal gas concentrations at critical locations, such as hydrogen leaks, excessive oxygen, or accumulation of harmful gases, not only threaten production safety but may also trigger serious accidents such as explosions and poisoning. Therefore, accurately monitoring and providing early warning of gas conditions in hydrogen production equipment has become an important issue in ensuring the safe and efficient operation of the hydrogen production process. Traditional gas monitoring methods often rely on gas detection at a single or a few fixed points, which makes it difficult to fully reflect the gas distribution inside and around the equipment. Furthermore, they often ignore the impact of working environment factors on the detection results, leading to biased monitoring results and failing to detect potential safety hazards in a timely and effective manner. Summary of the Invention

[0003] In view of this, the present invention addresses the shortcomings of the prior art by proposing a gas monitoring method for hydrogen production equipment, aiming to solve at least one of the problems mentioned in the background art.

[0004] This invention provides a gas monitoring method for hydrogen production equipment, comprising the following steps:

[0005] S1. Obtain gas information data from key locations in the hydrogen production equipment;

[0006] S2. Obtain the operating environment information data of the hydrogen production equipment;

[0007] S3. Correct the gas information data based on the working environment information data, and perform detection and early warning on the hydrogen production equipment according to the corrected gas information data.

[0008] In some embodiments, the key locations in step S1 include: the raw material gas inlet, the reactor outlet, the hydrogen purification system inlet and outlet, the gas storage tank inlet and outlet, and the equipment sealing parts.

[0009] In some embodiments, the gas information data includes: oxygen concentration data, hydrogen concentration data, nitrogen concentration data, carbon monoxide concentration data, carbon dioxide concentration data, and methane concentration data.

[0010] In some embodiments, the working environment information data in step S2 includes: temperature information data and humidity information data.

[0011] In some embodiments, step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, includes:

[0012] Determine a first adjustment factor between the temperature information data and the gas information data;

[0013] A second adjustment factor is determined between the humidity information data and the gas information data.

[0014] In some embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0015] The safe temperature information data range of the hydrogen production equipment is determined. When the temperature information data of the hydrogen production equipment exceeds the safe temperature information data range, the gas information data is corrected by the first adjustment coefficient.

[0016] In some embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0017] The safe humidity information data range of the hydrogen production equipment is determined. When the humidity information data of the hydrogen production equipment exceeds the safe humidity information data range, the gas information data is corrected by the second adjustment coefficient.

[0018] In some embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0019] When the corrected hydrogen concentration data is lower than the preset first hydrogen concentration threshold or the oxygen concentration data is greater than the preset first oxygen concentration threshold, a first-level warning signal is issued.

[0020] When the corrected hydrogen concentration data is lower than the preset second hydrogen concentration threshold or the oxygen concentration data is greater than the preset second oxygen concentration threshold, a level two warning signal is issued.

[0021] In some embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0022] When the corrected methane concentration data exceeds 20% of the lower explosive limit, a Level 1 warning signal will be issued;

[0023] A level-two warning signal is issued when the corrected methane concentration data exceeds 40% of the lower explosive limit.

[0024] In some embodiments, the first hydrogen concentration threshold is greater than the second hydrogen concentration threshold, and the first oxygen concentration threshold is greater than the second oxygen concentration threshold.

[0025] Compared with existing technologies, the advantages of this invention are as follows: By monitoring gas information data at key locations such as the raw material gas inlet, reactor outlet, hydrogen purification system inlet and outlet, gas storage tank inlet and outlet, and equipment sealing parts, comprehensive control of the gas status of each key link in the hydrogen production equipment is ensured, avoiding the omission of potential safety hazards. Simultaneous monitoring of the concentration data of multiple gases such as oxygen, hydrogen, nitrogen, carbon monoxide, carbon dioxide, and methane provides a more comprehensive reflection of the internal gas environment of the equipment, enabling timely detection of anomalies. Based on the corrected gas concentration data, different levels of early warning signals (Level 1 and Level 2 early warning) can be set, allowing for appropriate measures to be taken according to the severity of the gas concentration, improving the accuracy and timeliness of early warnings. By acquiring temperature and humidity information data of the working environment and correcting the gas information data, the influence of environmental factors on the measurement accuracy of gas sensors can be effectively eliminated, improving the accuracy of monitoring data. When the temperature or humidity exceeds the safe range, the gas data is corrected by adjusting the coefficient, ensuring accurate judgment of equipment status even in extreme environments, avoiding false alarms or missed alarms. By monitoring the concentrations of hydrogen and oxygen in real time and issuing early warnings when concentrations are abnormal, dangerous situations such as hydrogen leaks and excessive oxygen can be effectively prevented, reducing the risk of explosions or poisoning. Monitoring and early warning of methane concentrations can promptly detect methane accumulation and take measures to prevent methane concentrations from reaching the lower explosive limit, further improving equipment safety.

[0026] The above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure.

[0027] Other features and aspects of this disclosure will become clearer from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A flowchart of a gas monitoring method for a hydrogen production device provided in an embodiment of the present invention. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] See Figure 1 As shown, a gas monitoring method for a hydrogen production device according to an embodiment of this application includes the following steps:

[0035] S1. Obtain gas information data from key locations in the hydrogen production equipment;

[0036] S2. Obtain the operating environment information data of the hydrogen production equipment;

[0037] S3. Correct the gas information data based on the working environment information data, and perform detection and early warning on the hydrogen production equipment according to the corrected gas information data.

[0038] In some specific embodiments, the key locations in step S1 include: the raw material gas inlet, the reactor outlet, the hydrogen purification system inlet and outlet, the gas storage tank inlet and outlet, and the equipment sealing parts.

[0039] In some specific embodiments, the gas information data includes: oxygen concentration data, hydrogen concentration data, nitrogen concentration data, carbon monoxide concentration data, carbon dioxide concentration data, and methane concentration data.

[0040] In some specific embodiments, the working environment information data in step S2 includes: temperature information data and humidity information data.

[0041] It should be understood that in hydrogen production equipment, the feed gas inlet, reactor outlet, hydrogen purification system inlet and outlet, gas storage tank inlet and outlet, and equipment sealing points are critical nodes for gas flow and reaction. The gas concentration at these locations directly reflects the operating status and safety of the equipment. By placing gas sensors at these critical locations, changes in gas composition can be monitored in real time, thereby determining whether the equipment is operating normally or whether there are potential safety hazards.

[0042] Monitoring gas information at these critical locations allows for a comprehensive understanding of the gas conditions at each key stage of the hydrogen production equipment, preventing the omission of important information. For example, monitoring the feed gas inlet can detect quality problems; monitoring the reactor outlet can determine whether the reaction is complete; monitoring the inlet and outlet of the hydrogen purification system can ensure hydrogen purity; monitoring the inlet and outlet of the gas storage tank can prevent hydrogen leakage; and monitoring equipment seals can detect gas leaks caused by seal failure.

[0043] Monitoring the concentration of multiple gases can provide a more comprehensive reflection of the gas environment inside the equipment, avoiding the limitations of monitoring a single gas. For example, abnormal hydrogen concentration may indicate a leak, abnormal oxygen concentration may indicate equipment corrosion or explosion risk, and abnormal carbon monoxide and carbon dioxide concentration may indicate incomplete reactions.

[0044] High temperatures can cause gas expansion, affecting concentration measurements; low temperatures can cause gas condensation, affecting sensor performance; high humidity can cause sensor moisture absorption, affecting measurement accuracy; and low humidity can cause sensor drying, affecting sensitivity. By acquiring temperature and humidity information of the working environment, these environmental factors can be corrected, thereby improving the accuracy of gas concentration data. By correcting for the effects of temperature and humidity on gas concentration, the measurement accuracy of gas sensors can be significantly improved, avoiding misjudgments caused by environmental factors. This method can still accurately monitor gas concentration under different temperature and humidity conditions, improving the adaptability and reliability of the method.

[0045] In some specific embodiments, step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, includes:

[0046] Determine a first adjustment factor between the temperature information data and the gas information data;

[0047] A second adjustment factor is determined between the humidity information data and the gas information data.

[0048] In some specific embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0049] The safe temperature information data range of the hydrogen production equipment is determined. When the temperature information data of the hydrogen production equipment exceeds the safe temperature information data range, the gas information data is corrected by the first adjustment coefficient.

[0050] In some specific embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0051] The safe humidity information data range of the hydrogen production equipment is determined. When the humidity information data of the hydrogen production equipment exceeds the safe humidity information data range, the gas information data is corrected by the second adjustment coefficient.

[0052] In some specific embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0053] When the corrected hydrogen concentration data is lower than the preset first hydrogen concentration threshold or the oxygen concentration data is greater than the preset first oxygen concentration threshold, a first-level warning signal is issued.

[0054] When the corrected hydrogen concentration data is lower than the preset second hydrogen concentration threshold or the oxygen concentration data is greater than the preset second oxygen concentration threshold, a level two warning signal is issued.

[0055] In some specific embodiments, step S3, which involves correcting the gas information data based on the working environment information data and detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes:

[0056] When the corrected methane concentration data exceeds 20% of the lower explosive limit, a Level 1 warning signal will be issued;

[0057] A level-two warning signal is issued when the corrected methane concentration data exceeds 40% of the lower explosive limit.

[0058] In some specific embodiments, the first hydrogen concentration threshold is greater than the second hydrogen concentration threshold, and the first oxygen concentration threshold is greater than the second oxygen concentration threshold.

[0059] It should be understood that gas concentration measurements are significantly affected by temperature, particularly regarding the first adjustment factor. For example, high temperatures can cause gas expansion, potentially leading to lower concentration readings from the sensor; conversely, low temperatures can cause gas condensation, resulting in higher readings. A model establishing the relationship between temperature and gas concentration is developed through experiments or theoretical calculations to determine the temperature correction factor. This eliminates the influence of temperature on gas concentration measurements, ensuring accurate reflection of the internal gas conditions even under extreme temperatures.

[0060] Regarding the second adjustment factor, humidity variations affect the performance of the gas sensor. High humidity may cause gas condensation or sensor moisture absorption, leading to measurement deviations; low humidity may cause the sensor to dry out, reducing sensitivity. Through experiments or theoretical calculations, a model relating humidity and gas concentration is established to determine the humidity correction factor. This eliminates the influence of humidity on gas concentration measurement, ensuring accurate monitoring of gas concentration even in high or low humidity environments.

[0061] Hydrogen production equipment typically has a defined safe temperature range. When the equipment temperature exceeds this range, it indicates a potential malfunction (such as overheating or overcooling). In this case, a first adjustment factor is used to correct the gas concentration data, ensuring accurate assessment of the equipment status even under extreme temperatures. This avoids misjudgments of gas concentration due to temperature anomalies and improves the reliability of the monitoring system.

[0062] Hydrogen production equipment also has a specified safe humidity range. When the equipment humidity exceeds this range, it indicates that the environment may be abnormal (such as humid or dry). In this case, a second adjustment factor is used to correct the gas concentration data to ensure accurate judgment of the equipment status even under extreme humidity conditions, avoid misjudgment of gas concentration due to abnormal humidity, and improve the adaptability of the monitoring system.

[0063] A Level 1 warning signal is issued when the corrected hydrogen concentration falls below the first threshold (higher concentration) or the oxygen concentration rises above the first threshold (lower concentration). This indicates a potential minor malfunction in the equipment, requiring attention but not yet reaching a dangerous level. Issuing a warning in the early stages of a problem reminds operators to promptly check the equipment and prevent a minor issue from escalating into a major malfunction.

[0064] A Level 2 warning signal is issued when the corrected hydrogen concentration falls below the second threshold (lower concentration) or the oxygen concentration rises above the second threshold (higher concentration). This indicates a serious equipment malfunction that could lead to hazards such as explosion or poisoning. A higher-level warning is issued in severe cases to prompt operators to take immediate emergency measures to prevent accidents.

[0065] A Level 1 warning signal is issued when the corrected methane concentration reaches 20% of the lower explosive limit. This indicates that the methane concentration is approaching a dangerous level and requires close monitoring. Early warning of rising methane concentrations is crucial to prevent it from reaching the explosive limit and to reduce the risk of explosion.

[0066] A Level 2 warning signal is issued when the corrected methane concentration reaches 40% of the lower explosive limit. This indicates that the methane concentration is extremely high and there is a high probability of an explosion. An emergency warning is issued when the methane concentration approaches the explosive limit, prompting operators to take immediate measures to prevent an explosion.

[0067] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A gas monitoring method for a hydrogen production device, characterized in that, Includes the following steps: S1. Obtain gas information data from key locations in the hydrogen production equipment; S2. Obtain the operating environment information data of the hydrogen production equipment; S3. Correct the gas information data based on the working environment information data, and perform detection and early warning on the hydrogen production equipment according to the corrected gas information data.

2. The gas monitoring method for a hydrogen production device according to claim 1, characterized in that, The key locations in step S1 include: the raw material gas inlet, the reactor outlet, the hydrogen purification system inlet and outlet, the gas storage tank inlet and outlet, and the equipment sealing parts.

3. The gas monitoring method for a hydrogen production device according to claim 2, characterized in that, The gas information data includes: oxygen concentration data, hydrogen concentration data, nitrogen concentration data, carbon monoxide concentration data, carbon dioxide concentration data, and methane concentration data.

4. A gas monitoring method for a hydrogen production device according to claim 3, characterized in that, The working environment information data in step S2 includes: temperature information data and humidity information data.

5. A gas monitoring method for a hydrogen production device according to claim 4, characterized in that, Step S3, which involves correcting the gas information data based on the working environment information data and then performing detection and early warning for the hydrogen production equipment based on the corrected gas information data, includes: Determine a first adjustment factor between the temperature information data and the gas information data; A second adjustment factor is determined between the humidity information data and the gas information data.

6. A gas monitoring method for a hydrogen production device according to claim 5, characterized in that, Step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes: The safe temperature information data range of the hydrogen production equipment is determined. When the temperature information data of the hydrogen production equipment exceeds the safe temperature information data range, the gas information data is corrected by the first adjustment coefficient.

7. A gas monitoring method for a hydrogen production device according to claim 6, characterized in that, Step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes: The safe humidity information data range of the hydrogen production equipment is determined. When the humidity information data of the hydrogen production equipment exceeds the safe humidity information data range, the gas information data is corrected by the second adjustment coefficient.

8. A gas monitoring method for a hydrogen production device according to claim 7, characterized in that, Step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes: When the corrected hydrogen concentration data is lower than the preset first hydrogen concentration threshold or the oxygen concentration data is greater than the preset first oxygen concentration threshold, a first-level warning signal is issued. When the corrected hydrogen concentration data is lower than the preset second hydrogen concentration threshold or the oxygen concentration data is greater than the preset second oxygen concentration threshold, a level two warning signal is issued.

9. A gas monitoring method for a hydrogen production device according to claim 8, characterized in that, Step S3, which involves correcting the gas information data based on the working environment information data and then detecting and issuing an early warning for the hydrogen production equipment based on the corrected gas information data, further includes: When the corrected methane concentration data exceeds 20% of the lower explosive limit, a Level 1 warning signal will be issued; A level-two warning signal is issued when the corrected methane concentration data exceeds 40% of the lower explosive limit.

10. A gas monitoring method for a hydrogen production device according to claim 9, characterized in that, The first hydrogen concentration threshold is greater than the second hydrogen concentration threshold, and the first oxygen concentration threshold is greater than the second oxygen concentration threshold.

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